Search results

Title: "I Kinda Just Messed with It": Investigating Students' Resources for Learning Digital Composing Technologies Outside of Class.
Creator: Keaton, Megan K., Neal, Michael R., McDowell, Stephen D., Yancey, Kathleen Blake, Fleckenstein, Kristie S., Florida State University, College of Arts and Sciences, Department of...
Show moreKeaton, Megan K., Neal, Michael R., McDowell, Stephen D., Yancey, Kathleen Blake, Fleckenstein, Kristie S., Florida State University, College of Arts and Sciences, Department of English
Show less
Abstract/Description: This dissertation investigates the resources that students use to learn new digital technologies to complete course assignments. This work is particularly important in a time when teachers are assigning more multimodal projects. If students are using and learning digital technologies to complete our assignments, we might argue that we should teach our students how to use the specific technologies they would use for the assignment. Yet, teaching students specific technologies is complicated...
Show moreThis dissertation investigates the resources that students use to learn new digital technologies to complete course assignments. This work is particularly important in a time when teachers are assigning more multimodal projects. If students are using and learning digital technologies to complete our assignments, we might argue that we should teach our students how to use the specific technologies they would use for the assignment. Yet, teaching students specific technologies is complicated for several reasons, including limited time and resources, numerous and quickly obsolete software, different levels of expertise for students and teachers, and more. Because of these complications, students may benefit from spending less time with instruction in specific technologies and more time considering practices for learning new digital technologies. This dissertation works to discover practices that teachers can use in the classroom to help their students learn how to learn new digital technologies in order to compose multimodal texts. To do this, I investigate how students are already learning technologies outside of the classroom and use this investigation to identify possible pedagogical directions. To gain a broader understanding of the resources students are using, I surveyed five sections of an upper-level composition course in which students completed at least one digital assignment. Then, to gain a more nuanced and richer description of resource use, I interviewed three of these students. To analyze the data, I used a framework adapted from Jeanette R. Hill and Michael J. Hannafin's components for Resource-Based Learning (RBL). RBL is a pedagogical approach that aims to teach students how to learn and to produce students who are self-directed problem-solvers, able to work both collaboratively and individually. Though RBL is a pedagogical approach, I used its values and parameters as a lens for understanding students' use of resources. RBL (as the name suggests) puts emphasis on the resources students use to facilitate their learning. Given the wide variety of resources and the ways in which they can be used in the classroom, few scholars articulate precisely what RBL may look like more generally. Hill and Hannafin (2010), however, list four components among which RBL can vary: resources, tools, contexts, and scaffolds. In this study, resource is an umbrella term for the tools, contexts, and humans students may use to support their learning. Tools are the non-human objects that students use to learn new technologies. Humans are the people from whom students seek help. Contexts are the rhetorical situations (specifically the audiences and purposes for composing) surrounding the technological learning, the students' past technological experiences, and the physical locations in which students work. An important element of this study is to identify not only what resources students use, but also how they use their resources; scaffolds are how the resources are used. The scaffolds in this study are as follows: conceptual scaffolds – resources help students decide the order in which to complete tasks, understand the affordances and constraints of the technology, and learn the genre conventions of a given text; metacognitive scaffolds – resources help students tap into their prior knowledge; procedural scaffolds – resources provide students with step-by-step instructions for completing tasks or with definitions of vocabulary; and strategic scaffolds – resources encourage students to experiment in order to learn and solve problems they encounter while learning the technology. In addition to addressing what and how students use resources to learn to perform tasks with the technology, I also examined how students used resources to learn the specialized vocabulary of the technology and the technology's affordances and constraints. The study resulted in eight findings about the ways in which students are using resources. These findings were then used to identify three areas for possible strategies teachers might consider to help students use resources to learn new technologies: 1. Helping students effectively choose technologies, which includes assisting them in (a) using resources to identify technology options and learn about the affordances and constraints of the options and (b) using the affordances and constraints, their composing situations, and the available resources to choose the technology that best meets their needs. 2. Helping students effectively use templates, which includes aiding them in (a) using templates to learn about the genres in which they are composing, (b) selecting effective templates, and (c) altering the templates based on their rhetorical situations and preferences. 3. Helping students learn the technology's specialized vocabulary, which includes assisting them in (a) identifying familiar visual and linguistic vocabulary, (b) making educated guesses about unfamiliar vocabulary, and (c) using resources to learn unfamiliar vocabulary.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Keaton_fsu_0071E_13707
Format: Thesis

Title: "Music's Most Powerful Ally": The National Federation of Music Clubs as an Institutional Leader in the Development of American Music Culture, 1898-1919.
Creator: Hedrick, Ashley Geer, Bearor, Karen A. (Karen Anne), Broyles, Michael, Eyerly, Sarah, Florida State University, College of Music
Abstract/Description: This dissertation explores the founding of the National Federation of Music Clubs (NFMC) in 1898 and focuses upon the organization's activities from its beginning to 1920. It highlights how the original members were able to build a strong and influential institution that continues to support American music and musicians today. The creation of the NFMC is a result of two developments that occurred simultaneously during the nineteenth-century in the United States: 1) the proliferation of...
Show moreThis dissertation explores the founding of the National Federation of Music Clubs (NFMC) in 1898 and focuses upon the organization's activities from its beginning to 1920. It highlights how the original members were able to build a strong and influential institution that continues to support American music and musicians today. The creation of the NFMC is a result of two developments that occurred simultaneously during the nineteenth-century in the United States: 1) the proliferation of voluntary associations and organized reform movements and 2) the emergence of high art music culture across the nation. This project applies gender theory to examine the development of the notion of the domestic sphere as the appropriate domain for the female sex in the nineteenth century, and how women reacted to dominant ideologies through voluntary organizations that broadened their world. It also utilizes recent scholarship in women's history, social history, early American history, and institutional studies to present a survey of the types of organizations that formed and how they changed in response to the social and historical context. Even though the NFMC was originally a women's institution run by and for women, its larger goal was to disseminate art music culture through local club activities across the nation to all citizens. The growth of women's music clubs was part of the post-civil war boom of women's culture clubs. The concept of music as art developed and spread steadily during the nineteenth century, and at first the music clubs specifically cultivated art music based on western European traditions, which was associated with high class refinement. European ideals were perpetuated by an influx of European touring virtuosos and groups during the first half of the nineteenth century. In her article titled "Art Music from 1800 to 1860," Katherine K. Preston explains that the polished concerts performed by touring musicians not only circulated art music among Americans, but they also introduced higher performance standards, which resulted in increasingly higher expectations for refined performances from American audiences starting in the 1820s and 1830s and surging after 1840. These performances were supported and promoted by patrons and institutions, which ultimately led to the growth of art music appreciation as a movement throughout the nation. Michael Broyles clarifies that even though European style was dominant during the nineteenth century, American musical culture was uniquely formed by "historical events that have no European counterpart." He states that institutions controlled the character of the music in the United States. The support and dissemination of American art music happened through a combination of civic, philanthropic, private, and entrepreneurial activities, which included: the spread of art music through touring virtuosos and ensembles on a much larger scale than the first half of the nineteenth century, women's music clubs, orchestras, monster concerts and festivals, an increase in the number of American-born composers during the late nineteenth century, and a growing sense of patriotism at the turn of the century. During the late nineteenth and into the early twentieth centuries, women's music clubs became one of the most effective cultivators of classical music in the United States through their strong infrastructure and collaboration with prominent musicians, critics, and pedagogues. This project highlights the integral role of the NFMC's activities in many of the significant developments in the history of American music at this time. No other institution has been as ubiquitous or influential as the NFMC in the musical growth of the United States. This dissertation is the first detailed exploration of the history of this powerful institution.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Hedrick_fsu_0071E_13773
Format: Thesis

Title: "What's Love Got to Do with It?": The Master-Slave Relationship in Black Women's Neo-Slave Narratives.
Creator: Price, Jodi L., Montgomery, Maxine Lavon, Jones, Maxine Deloris, Moore, Dennis D., Ward, Candace, Florida State University, College of Arts and Sciences, Department of English
Abstract/Description: A growing impulse in American black female fiction is the reclamation of black female sexuality due to slavery's proliferation of sexual stereotypes about black women. Because of slave law's silencing of rape culture, issues of consent, will, and agency become problematized in a larger dilemma surrounding black humanity and the repression of black female sexuality. Since the enslaved female was always assumed to be willing, because she is legally unable to give consent or resist, locating...
Show moreA growing impulse in American black female fiction is the reclamation of black female sexuality due to slavery's proliferation of sexual stereotypes about black women. Because of slave law's silencing of rape culture, issues of consent, will, and agency become problematized in a larger dilemma surrounding black humanity and the repression of black female sexuality. Since the enslaved female was always assumed to be willing, because she is legally unable to give consent or resist, locating black female desire within the confines of slavery becomes largely impossible. Yet, contemporary re-imaginings of desire in this context becomes an important point of departure for re-membering contemporary black female subjectivity. "What's Love Got to Do With It?" is an alternative look at master-slave relationships, particularly those between white men and black women, featured in contemporary slave narratives by black women writers. Although black feminist critics have long considered love an unavailable, if not, unthinkable construct within the context of interracial relationships during slavery, this project locates this unexpected emotion within four neo-slave narratives. Finding moments of love and desire from, both, slaveholders and slaves, this study nuances monolithic historical players we are usually quick to adjudicate. Drawing on black feminist criticism, history, and critical race theory, this study outlines the importance of exhuming these historic relationships from silence, acknowledging the legacies they left for heterosexual love and race relations, and exploring what lessons we can take away from them today. Recognizing the ongoing tension between remembering and forgetting and the inherent value in both, this study bridges the gap by delineating the importance of perspective and the stories we choose to tell. Rather than being forever haunted by traumatic memories of the past and proliferating stories of violence and abuse, Barbara Chase-Riboud, Octavia Butler, Gayle Jones, and Gloria Naylor's novels reveal that there are ways to negotiate the past, use what you need, and come to a more holistic place where love is available.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Price_fsu_0071E_13737
Format: Thesis

Title: The 1-Type of Algebraic K-Theory as a Multifunctor.
Creator: Valdes, Yaineli, Aldrovandi, Ettore, Rawling, John Piers, Agashe, Amod S., Aluffi, Paolo, Petersen, Kathleen L., Hoeij, Mark van, Florida State University, College of Arts and...
Show moreValdes, Yaineli, Aldrovandi, Ettore, Rawling, John Piers, Agashe, Amod S., Aluffi, Paolo, Petersen, Kathleen L., Hoeij, Mark van, Florida State University, College of Arts and Sciences, Department of Mathematics
Show less
Abstract/Description: It is known that the category of Waldhausen categories is a closed symmetric multicategory and algebraic K-theory is a multifunctor from the category of Waldhuasen categories to the category of spectra. By assigning to any Waldhausen category the fundamental groupoid of the 1-type of its K-theory spectrum, we get a functor from the category of Waldhausen categories to the category of Picard groupoids, since stable 1-types are classified by Picard groupoids. We prove that this functor is a...
Show moreIt is known that the category of Waldhausen categories is a closed symmetric multicategory and algebraic K-theory is a multifunctor from the category of Waldhuasen categories to the category of spectra. By assigning to any Waldhausen category the fundamental groupoid of the 1-type of its K-theory spectrum, we get a functor from the category of Waldhausen categories to the category of Picard groupoids, since stable 1-types are classified by Picard groupoids. We prove that this functor is a multifunctor to a corresponding multicategory of Picard groupoids.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Valdes_fsu_0071E_14374
Format: Thesis

Title: A Climatology of U.S. Tropical Cyclone Rainfall, Its Use in a Statistical Forecasting Technique and an Analysis of Global Forecast System Tropical Cyclone Rainfall Forecast Environments.
Creator: Hall, Tristan J., Florida State University, College of Arts and Sciences, Department of Earth, Ocean, and Atmospheric Science
Abstract/Description: While advances in tropical cyclone (TC) track forecasting have been substantial over the past few decades, and modest advances in intensity forecasting have occurred more recently, the quality of TC rainfall forecasts has not undergone the same rigorous verification. This is despite the 27% of total TC-related deaths being due to rainfall-induced flooding and that rainfall-related deaths occur more frequently than those due to any another weather-related hazard. A continual effort is needed...
Show moreWhile advances in tropical cyclone (TC) track forecasting have been substantial over the past few decades, and modest advances in intensity forecasting have occurred more recently, the quality of TC rainfall forecasts has not undergone the same rigorous verification. This is despite the 27% of total TC-related deaths being due to rainfall-induced flooding and that rainfall-related deaths occur more frequently than those due to any another weather-related hazard. A continual effort is needed to understand and better-forecast TC rainfall. This dissertation research seeks to contribute to this endeavor. A climatological dataset is created using 6-h Stage IV rainfall accumulations combined with Best Track 6-h locations for all TCs within 300 km of the U.S. Gulf and Atlantic coastlines during years 2004 - 2013. Stage IV data are used due to their higher spatiotemporal resolution, their extension to high latitudes, and because they have been found to be the superior option when compared to other TC rainfall data sources. The 6-h Stage IV rainfall accumulations are composited by shear magnitude and storm intensity in earth-, motion-, and shear-relative reference frames. Additionally, a full composite comprised of all storms is created. This compositing is done for TCs impacting the U.S. Gulf and Atlantic coastlines. Seven geographical regions are created within this domain to further composite the rainfall. The geographical regions are determined based on 2004 - 2013 Best Track (HURDAT2) landfall locations. Results show that some Stage IV rain rate characteristics, especially those in specific regions, are different when compared to prior findings based on satellite-derived rain rates. Results from the Stage IV-derived climatological datasets then are used together with track forecasts from the Global Forecast System (GFS) during years 2014 - 2016 to create 72-h TC rainfall forecasts. Separate forecasts are created for each 6-h TC position forecast based on shear magnitude, storm intensity, and the all-storms composites in earth-, motion-, and shear-relative reference frames. This yielded 1,290 verifiable forecasts during the 3-yr period. These statistical rainfall forecasts along with forecasts from the GFS and an R-CLIPER created from Stage IV data are verified using the Fractions Skill Score (FSS) metric. Results show that the statistical method based on shear magnitude in a shear-relative reference frame that used regional rainfall composites is the best performing of the methods. Additionally, FSSs from the statistical model are shown to be larger than those from R-CLIPER. The preliminary results from the statistical model show that this method is a viable candidate to supplement R-CLIPER as a statistical baseline TC rainfall forecast method. GFS analysis and forecast environmental parameters are composited based on the skill (FSS) of each forecast. Three categories are created: Top (FSS > 0.6), Bottom (FSS < 0.3), and Middle (0.3 < FSS < 0.6). This methodology is based on the desire to provide "guidance on guidance," i.e., suggesting to a forecaster whether the TC's environment is conducive to a skillful or not-skillful GFS rainfall forecast, and to help determine possible factors to increase the FSS of the statistical model. Results show that some aspects of the mean sea level pressure, 1000 - 500 hPa thickness anomalies, eddy flux convergence, and upper-level winds and divergence differ between skillful and non-skillful TC rainfall forecasts.
Show less
Date Issued: 2019
Identifier: 2019_Fall_HALL_fsu_0071E_15343
Format: Thesis

Title: An Absolute Angular Momentum Based Analytical Model for Tropical Cyclone Radial Wind Profiles.
Creator: Yan, Ruikai, Cai, Ming, Niu, Xufeng, Chagnon, Jeffrey M., Speer, Kevin G. (Kevin George), Florida State University, College of Arts and Sciences, Department of Earth, Ocean, and...
Show moreYan, Ruikai, Cai, Ming, Niu, Xufeng, Chagnon, Jeffrey M., Speer, Kevin G. (Kevin George), Florida State University, College of Arts and Sciences, Department of Earth, Ocean, and Atmospheric Science
Show less
Abstract/Description: The ability to construct radial wind profiles of tropical cyclones (TC) from limited observations is crucial to the initialization of TC simulations and predictions. A minimum requirement for constructing a reasonable radial wind profile is a high skill in estimating one of the four TC characteristic parameters, namely maximum wind speed (Vmax), radius of maximum wind speed (rmax), 17 ms−1 wind speed (V17), and radius of 17 ms−1 wind (r17) from the other three. In this study, we put froth an...
Show moreThe ability to construct radial wind profiles of tropical cyclones (TC) from limited observations is crucial to the initialization of TC simulations and predictions. A minimum requirement for constructing a reasonable radial wind profile is a high skill in estimating one of the four TC characteristic parameters, namely maximum wind speed (Vmax), radius of maximum wind speed (rmax), 17 ms−1 wind speed (V17), and radius of 17 ms−1 wind (r17) from the other three. In this study, we put froth an absolute angular momentum (AAM) based analytical model for inferring the radial profile beyond the rmax from observations of these four parameters. An observed AAM loss L is defined as the ratio of the observed AAM at r17 to that at rmax. We parameterize the observed AAM loss L as an analytical function of these four parameters and environmental factors. The combination of analytical expressions of the AAM loss L and the AAM at r17 and rmax, gives us the analytical model. This observation-physics model allows us to construct radial profiles of TCs under four different configurations from observations of these four parameters. Specifically, we can use Vmax and rmax as inputs for solving (a) the tangential velocity profile of a TC from rmax to r17 or (b) the TC's radius for a given tangential velocity from Vmax to V17. Alternatively, we can use V17 and r17 as inputs for solving (c) the tangential velocity profile of a TC from r17 to rmax or (d) the TC's radius for a given tangential velocity from V17 to Vmax. This enables us to acquire radial wind profiles when one of the four parameters is not available in observations. The degree of consistency of (a) versus (c) and (b) versus (d) is an indicator of the robustness of the model. We evaluate the skill of our model using 4491 records of 197 named TCs derived from the Extended Best Track Dataset for the period of 1998-2016, and find that the mean errors in estimating Vmax, rmax, V17, and r17 are, respectively, 5.95 m/s, 25.37 km, 3.33 m/s, and 57.67 km. The proposed model has several advantages over widely recognized existing TC wind profile models. Most empirical models, for example, are designed to construct radial wind profiles in only one of the four configurations. While other physics-based models have mean errors in Vmax, rmax, and r17 that are larger by several factors. Furthermore, our model can yield physically realistic radial wind profiles and solutions of TC characteristic parameters (meaning that for radial wind profiles, wind velocity decreases monotonically from rmax to r17, and for solutions, Vmax > V17 > 0 and r17 > rmax > 0) for all 4491 TC records, regardless of which of the four configurations is chosen. For more than 10% of the TC records, however, other physics-based models have radial wind profiles that are discrete or increases from the inside to outside, and have solutions that either do not exist or are not physical under certain configurations.
Show less
Date Issued: 2019
Identifier: 2019_Summer_Yan_fsu_0071E_15321
Format: Thesis

Title: Actinide Fluorides.
Creator: Chemey, Alexander Theodore, Albrecht-Schmitt, Thomas E., Tabor, Samuel L., Latturner, Susan, Hanson, Kenneth G., Florida State University, College of Arts and Sciences,...
Show moreChemey, Alexander Theodore, Albrecht-Schmitt, Thomas E., Tabor, Samuel L., Latturner, Susan, Hanson, Kenneth G., Florida State University, College of Arts and Sciences, Department of Chemistry and Biochemistry
Show less
Abstract/Description: The periodic table of the elements, derived from numerous attempts in the 1800s to systematically examine the chemistry found in nature, has seen a stark evolution over the last century. The elements of the actinide series are the frontier of a radical discontinuity in periodicity, driven by a relativistic reorganization of the frontier orbitals. Characterization of the chemistry of these elements with simple model species enables detailed coordination between structural chemistry and...
Show moreThe periodic table of the elements, derived from numerous attempts in the 1800s to systematically examine the chemistry found in nature, has seen a stark evolution over the last century. The elements of the actinide series are the frontier of a radical discontinuity in periodicity, driven by a relativistic reorganization of the frontier orbitals. Characterization of the chemistry of these elements with simple model species enables detailed coordination between structural chemistry and theoretical characterization. Such examinations advance understanding of these relativistic shifts. With the ever-growing influence of these effects, periodic trends on the table the elements break down, and synthetic elements beyond uranium offer new opportunities to probe these divergent and nonlinear chemistries. The introductory chapter addresses the history of the synthesis and the initial chemical characterization of the transuranium elements, with a brief basic introduction given to discuss the reaction physics which will follow. These elements share a single common feature in that they all have large Z values, and thus have electronic structures that are significantly altered by both scalar relativistic effects and spin-orbit coupling. These effects scale nonlinearly with increasing Z and create unexpected deviations both across series and down groups of elements. The magnitude of these effects is large enough that orbital energies rearrange and mix in ways that complicate incomplete depictions that are based solely on electron repulsion. The second chapter discusses calculations with nuclear reaction codes to examine a potential production rate improvement that may be derived by super-heavy synthesis with reactions run in inverse kinematics. This result is particularly important for continuing the evolution of the periodic table, as increased production rates enable new spectroscopic analyses of electronic and nuclear structure that can, in future years, potentially rewrite our understanding of relativity at the most extreme scale heretofore produced. The third chapter discusses new structural, spectroscopic, and theoretical features of uranium fluorides that are relevant for fundamental uranium(IV) chemistry and actinide fluoride reactors. The simple system of tetraammonium octafluorouranate is employed to derive fundamental understanding of the uranium-fluorine interaction. The structure is composed of isolated molecules, enabling a clear look at the U4+ (f 2) species in the most ionic bonding environment possible, without the possibility of direct interactions or strong interactions through ligands between uranium centers. Characterization of single-crystals by x-ray diffraction, absorption spectroscopy, and magnetic analysis up to 45 T is interwoven with extensive theoretical treatment by CASSCF. The influence of different active spaces and representations of the structure is examined in the context of the experimental evidence. The Interacting Quantum Atoms method is used to examine the nature of the U-F bond, concluding that there is a non-negligible degree of covalent character (9% of the total bond energy) even with the most ionic simple anion of fluoride. Two new sodium uranium(IV) pentafluorides were synthesized from uranium dioxide, HF, and NaF under mild hydrothermal conditions. Although β-NaUF5·H2O crystallizes in the (lower) monoclinic crystal class, it possesses greater crystal lattice energy than the previously-known orthorhombic α-NaUF5·H2O. Trigonal β-NaUF5 possess significantly different bonding between [UF9]5- moieties than the α-phase, with higher symmetry and greater lattice energy than its orthorhombic structural isomer, which is most directly comparable in structure to Na3,4M2+/3+U6F30. Single-crystal absorption spectra of these compounds are reported and correlated. Simulated powder x-ray diffraction data are also reported and compared to address a (mis)identification of the NaUF5 series that dates back to the Manhattan Project. The final textual chapter extends the methods discussed in previous chapters to the actinide series, with new lithium plutonium fluorides analyzed and placed into the broader context of actinide fluorides, including a new evaluation of an analogous zirconium structure. The structure of Li4ZrF8 was refined from single crystal X-ray diffraction data. Alkali zirconium fluorides are important in nuclear-relevant technologies, and zirconium is commonly employed as an analogue for tetravalent f-block elements. This result is largely consistent with prior reports, but with significant improvements in precision. The similar reaction of 242PuO2 with HF and LiF under hydrothermal conditions results in the formation of Li4PuF8 and LiPuF5. These compounds were structurally characterized using single crystal X–ray diffraction and UV–vis–NIR absorption spectroscopy. The structure of Li4PuF8 consists of [PuF8]4‒ anions that adopt a non-bridged bicapped trigonal prismatic geometry with approximate C2v symmetry. In contrast, LiPuF5 forms a dense three–dimensional network constructed from [PuF9]5‒ units that are bridged by fluoride anions. The Pu4+ cations are found within tricapped trigonal prisms. Extensive theoretical analysis of electronic and bonding interactions is included with comparison between results derived from CASSCF at different levels of theory, QTAIM, IQA, NLMO, and WBO analyses. Covalent interactions in these compounds are examined and intra–molecular trends in covalent and electrostatic interactions are discussed.
Show less
Date Issued: 2019
Identifier: 2019_Fall_Chemey_fsu_0071E_15478
Format: Thesis

Title: Active Control of High-Speed Free Jets Using High-Frequency Excitation.
Creator: Upadhyay, Puja, Alvi, Farrukh S., Hussaini, M. Yousuff, Kumar, Rajan, Clark, Jonathan E., Gustavsson, Jonas, Florida State University, College of Engineering, Department of...
Show moreUpadhyay, Puja, Alvi, Farrukh S., Hussaini, M. Yousuff, Kumar, Rajan, Clark, Jonathan E., Gustavsson, Jonas, Florida State University, College of Engineering, Department of Mechanical Engineering
Show less
Abstract/Description: Control of aerodynamic noise generated by high-performance jet engines continues to remain a serious problem for the aviation community. Intense low frequency noise produced by large-scale coherent structures is known to dominate acoustic radiation in the aft angles. A tremendous amount of research effort has been dedicated towards the investigation of many passive and active flow control strategies to attenuate jet noise, while keeping performance penalties to a minimum. Unsteady excitation,...
Show moreControl of aerodynamic noise generated by high-performance jet engines continues to remain a serious problem for the aviation community. Intense low frequency noise produced by large-scale coherent structures is known to dominate acoustic radiation in the aft angles. A tremendous amount of research effort has been dedicated towards the investigation of many passive and active flow control strategies to attenuate jet noise, while keeping performance penalties to a minimum. Unsteady excitation, an active control technique, seeks to modify acoustic sources in the jet by leveraging the naturally-occurring flow instabilities in the shear layer. While excitation at a lower range of frequencies that scale with the dynamics of large-scale structures, has been attempted by a number of studies, effects at higher excitation frequencies remain severely unexplored. One of the major limitations stems from the lack of appropriate flow control devices that have sufficient dynamic response and/or control authority to be useful in turbulent flows, especially at higher speeds. To this end, the current study seeks to fulfill two main objectives. First, the design and characterization of two high-frequency fluidic actuators ($25$ and $60$ kHz) are undertaken, where the target frequencies are guided by the dynamics of high-speed free jets. Second, the influence of high-frequency forcing on the aeroacoustics of high-speed jets is explored in some detail by implementing the nominally 25 kHz actuator on a Mach 0.9 ($Re_D = 5\times10^5$) free jet flow field. Subsequently, these findings are directly compared to the results of steady microjet injection experiments performed in the same rig and to prior jet noise control studies, where available. Finally, limited acoustic measurements were also performed by implementing the nominally 25 kHz actuators on jets at higher Mach numbers, including shock containing jets, and elevated temperatures. Using lumped element modeling as an initial guide, the current work expands on the previous development of low-frequency (2-8 kHz) Resonance Enhanced Micro-actuators (REM) to design actuators that are capable of producing high amplitude pulses at much higher frequencies. Extensive benchtop characterization, using acoustic measurements as well as optical diagnostics using a high resolution micro-schlieren setup, is employed to characterize the flow properties and dynamic response of these actuators. The actuators produced high-amplitude output a range of frequencies, $20.3-27.8$ kHz and $54.8-78.2$ kHz, respectively. In addition to providing information on the actuator flow physics and performances at various operating conditions, the benchtop study serves to develop relatively easy-to-integrate, high-frequency actuators for active control of high-speed jets for noise reduction. Following actuator characterization studies, the nominally 25 kHz ($St_{DF} \approx 2.2$) actuators are implemented on a Mach 0.9 free jet flow field. Eight actuators are azimuthally distributed at the nozzle exit to excite the initial shear layer at frequencies that are approximately an order of magnitude higher compared to the \textit{jet preferred frequency}, $St_P \approx 0.2-0.3$. The influence of control on the mean and turbulent characteristics of the jet, especially the developing shear layer, is examined in great detail using planar and stereoscopic Particle Image Velocimetry (PIV). Examination of cross-stream velocity profiles revealed that actuation leads to strong, spatially coherent streamwise vortex pairs which in turn significantly modify the mean flow field, resulting in a prominently undulated shear layer. These vortices grow as they convect downstream, enhancing local entrainment and significantly thickening the initial shear layer. Azimuthal inhomogeneity introduced in the jet shear layer is also evident in the simultaneous redistribution and reduction of peak turbulent fluctuations in the cross-plane near the nozzle exit. Further downstream, control results in a global suppression of turbulence intensities for all axial locations, also evidenced by a longer potential core and overall reduced jet spreading. The resulting impact on the noise signature is estimated via far-field acoustic measurements. Noise reduction was observed at low to moderate frequencies for all observation angles. Direct comparison of these results with that of steady microjet injection revealed some notable differences in the initial development of streamwise vorticity and the redistribution of peak turbulence in the azimuthal direction. However, despite significant differences in the near nozzle aerodynamics, the downstream evolution of the jet appeared to approach near similar conditions with both high-frequency and steady microjet injection. Moreover, the impact on far-field noise was also comparable between the two injection methods as well as with others reported in the literature. Finally, for jets at higher Mach numbers and elevated temperatures, the effect of control was observed to vary with jet conditions. While the impact of the two control mechanisms were fairly comparable on non-shock containing jets, high-frequency forcing was observed to produce significantly larger reductions in screech and broadband shock-associated noise (BBSN) at select under-expanded jet conditions. The observed variations in control effects at different jet conditions call for further investigation.
Show less
Date Issued: 2017
Identifier: FSU_FALL2017_Upadhyay_fsu_0071E_14154
Format: Thesis

Title: Active Control of Salient Flow Features in the Wake of a Ground Vehicle.
Creator: McNally, Jonathan William, Alvi, Farrukh S., Jung, Sungmoon, Kumar, Rajan, Taira, Kunihiko, Hahn, Seung Yong, Florida State University, College of Engineering, Department of...
Show moreMcNally, Jonathan William, Alvi, Farrukh S., Jung, Sungmoon, Kumar, Rajan, Taira, Kunihiko, Hahn, Seung Yong, Florida State University, College of Engineering, Department of Mechanical Engineering
Show less
Abstract/Description: Aerodynamics of road vehicles have continued to be a topic of interest due the relationship between fuel efficiency and the environmental impact of passenger vehicles. With the streamlining of ground vehicles combined with years of geometric and shape optimization, other techniques are required to continue to improve upon fuel consumption. One such technique leverages aerodynamics to minimize drag through the implementation of flow control techniques. The current study focuses on the...
Show moreAerodynamics of road vehicles have continued to be a topic of interest due the relationship between fuel efficiency and the environmental impact of passenger vehicles. With the streamlining of ground vehicles combined with years of geometric and shape optimization, other techniques are required to continue to improve upon fuel consumption. One such technique leverages aerodynamics to minimize drag through the implementation of flow control techniques. The current study focuses on the application of active flow control in ground vehicle applications, employing linear arrays of discrete microjets on the rear of a 25 Ahmed model. The locations of the arrays are selected to test the effectiveness of microjet control at directly manipulating the various features found in typical flow fields generated by ground vehicles. Parametric sweeps are conducted to investigate the flow response as a function of jet velocity, momentum, and vehicle scaling. The effect and effciency of the control are quantified through aerodynamic force measurements, while local modifications are investigated via particle image velocimetry and static pressure measurements on the rear surfaces of the model. Microjets proved most effective when utilized for separation control producing a maximum change to the coefficients of drag and lift of -14.0% and -42% of the baseline values, respectively. Control techniques targeting other flow structures such as the C-pillar vortices and trailing wake proved less effective, producing a maximum reduction in drag and lift of -1.2% and -7%. The change in the surface pressure distribution reveals the impact of each flow control strategy on a targeted flow structure, and highlights the complex interaction between the salient flow features found in the wake of the Ahmed model. Areas of pressure recovery on the surface of the model observed for each control technique support the observed changes to the aerodynamic forces. The time averaged, volumetric wake is also reconstructed to characterize the baseline flow field and highlight the effect of control on the three dimensional structure of the near wake region. The results show that separation control has a measurable effect on the flow field including modifications of the locations, size, magnitude, and trajectory of the various structures which comprise the near wake. The observations give insight into desirable modifications and flow topology which lead to an optimal drag configuration for a particular vehicle geometry.
Show less
Date Issued: 2018
Identifier: 2018_Su_McNally_fsu_0071E_14507
Format: Thesis

Title: Active Control of Wingtip Vortices Using Piezoelectric Actuated Winglets.
Creator: Guha, Tufan Kumar, Kumar, Rajan (Professor of Mechanical Engineering), Liang, Zhiyong Richard, Oates, William, Alvi, Farrukh S., Florida State University, FAMU-FSU College of...
Show moreGuha, Tufan Kumar, Kumar, Rajan (Professor of Mechanical Engineering), Liang, Zhiyong Richard, Oates, William, Alvi, Farrukh S., Florida State University, FAMU-FSU College of Engineering, Department of Mechanical Engineering
Show less
Abstract/Description: Wingtip vortices develop at the tips of aircraft wings due to a pressure imbalance during the process of generating lift. These vortices significantly increase the total aerodynamic drag of an aircraft at high-lift flight conditions such as during take-off and landing. The long trailing vortices contain strong circulation and may induce rolling moments and lift losses on a trailing aircraft, making them a major cause for wake turbulence. A mandatory spacing between aircraft is administered by...
Show moreWingtip vortices develop at the tips of aircraft wings due to a pressure imbalance during the process of generating lift. These vortices significantly increase the total aerodynamic drag of an aircraft at high-lift flight conditions such as during take-off and landing. The long trailing vortices contain strong circulation and may induce rolling moments and lift losses on a trailing aircraft, making them a major cause for wake turbulence. A mandatory spacing between aircraft is administered by civil aviation agencies to reduce the probability of hazardous wake encounters. These measures, while necessary, restrict the capacity of major airports and lead to higher wait times between take-off and landing of two aircraft. This poses a major challenge in the face of continuously increasing air traffic volume. Wingtip vortices are also known as a potent source of aerodynamic vibrations and noise. These negative effects have made the study of wingtip vortex attenuation a critical area of research. The problem of induced drag has been addressed with the development of wingtip device, like winglets. Tip devices diffuse the vortex at its very onset leading to lower induced drag. The problem of wake turbulence has been addressed in studies on vortex interactions and co-operative instabilities. These instabilities accelerate the process of vortex breakdown, leading to a lower lifetime in the wake. A few studies have tried to develop active mechanisms that can artificially excite these instabilities. The aim of the present study is to develop a device that can be used for both reducing induced drag and exciting wake instabilities. To accomplish this objective, an active winglet actuator has been developed with the help of piezoelectric Macro-Fiber Composite (MFC). The winglet is capable of oscillating about the main wing-section at desired frequency and amplitude. A passive winglet is a well-established drag reducing device. An oscillating winglet can introduce perturbations that can potentially lead to instabilities and accelerate the process of vortex breakdown. A half-body model of a generic aircraft configuration was fabricated to characterize and evaluate the performance of actuated winglets. Two winglet models having mean dihedral orientations of 0° and 75° were studied. The freestream velocity for these experiments was 20 m/s. The angle of incidence of the wing-section was varied between 0° and 8°. The Reynolds number based on the mid-chord length of the wing-section is 140000. The first part of the study consisted of a detailed structural characterization of the winglets at various input excitation and pressure loading conditions. The second part consisted of low speed wind tunnel tests to investigate the effects of actuation on the development of wingtip vortices at different angles of incidence. Measurements included static surface pressure distributions and Stereoscopic (ensemble and phase-locked) Particle Image Velocimetry (SPIV) at various downstream planes. Modal analysis of the fluctuations existing in the baseline vortex and those introduced by actuation is conducted with the help of Proper Orthogonal Decomposition (POD) technique. The winglet oscillations show bi-modal behavior for both structural and actuation modes of resonance. The oscillatory amplitude at these actuation modes increases linearly with the magnitude of excitation. During wind tunnel tests, fluid structure interactions lead to structural vibrations of the wing. The effect of these vibrations on the winglet oscillations decreases with the increase in the strength of actuation. At high input excitation, the actuated winglet is capable of generating controlled oscillations suitable for perturbing the vortex. The vortex associated with a winglet is stretched along its axis with multiple vorticity peaks. The center of the vortex core is seen at the root of the winglet while the highest vorticity levels are observed at the tip. The vortex core rotates and becomes more circular in shape while diffusing downstream. The shape, position, and strength of the vorticity peaks are found to vary periodically with winglet oscillation. Actuation is even capable of disintegrating the single vortex core into two vortices. The most energetic POD fluctuation modes, at the center of the baseline vortex core, correspond to vortex wandering at the initial downstream planes. At the farthest planes, the most energetic modes can be associated with core deformation. High energy fluctuations in the actuated vortex correspond to spatial oscillations and distortions produced by the winglet motion.
Show less
Date Issued: 2017
Identifier: FSU_SUMMER2017_Guha_fsu_0071E_14000
Format: Thesis

Title: Active Flow Control and Global Stability Analysis of Separated Flow over a NACA 0012 Airfoil.
Creator: Munday, Phillip M. (Phillip Michael), Taira, Kunihiko, Hussaini, M. Yousuff, Alvi, Farrukh S., Cattafesta, Louis N., Lin, Shangchao, Florida State University, College of...
Show moreMunday, Phillip M. (Phillip Michael), Taira, Kunihiko, Hussaini, M. Yousuff, Alvi, Farrukh S., Cattafesta, Louis N., Lin, Shangchao, Florida State University, College of Engineering, Department of Mechanical Engineering
Show less
Abstract/Description: The objective of this computational study is to examine and quantify the influence of fundamental flow control inputs in suppressing flow separation over a canonical airfoil. Most flow control studies to this date have relied on the development of actuator technology, and described the control input based on specific actuators. Taking advantage of a computational framework, we generalize the inputs to fundamental perturbations without restricting inputs to a particular actuator. Utilizing...
Show moreThe objective of this computational study is to examine and quantify the influence of fundamental flow control inputs in suppressing flow separation over a canonical airfoil. Most flow control studies to this date have relied on the development of actuator technology, and described the control input based on specific actuators. Taking advantage of a computational framework, we generalize the inputs to fundamental perturbations without restricting inputs to a particular actuator. Utilizing this viewpoint, generalized control inputs aim to aid in the quantification and support the design of separation control techniques. This study in particular independently introduces wall-normal momentum and angular momentum to the separated flow using swirling jets through model boundary conditions. The response of the flow field and the surface vorticity fluxes to various combinations of actuation inputs are examined in detail. By closely studying different variables, the influence of the wall-normal and angular momentum injections on separated flow is identified. As an example, open-loop control of fully separated, incompressible flow over a NACA 0012 airfoil at α = 6° and $9° with Re = 23,000 is examined with large-eddy simulations. For the shallow angle of attack α = 6°, the small recirculation region is primarily affected by wall-normal momentum injection. For a larger separation region at α = 9°, it is observed that the addition of angular momentum input to wall-normal momentum injection enhances the suppression of flow separation. Reducing the size of the separated flow region significantly impacts the forces, and in particular reduces drag and increases lift on the airfoil. It was found that the influence of flow control on the small recirculation region (α = 6°) can be sufficiently quantified with the traditional coefficient of momentum. At α = 9°, the effects of wall-normal and angular momentum inputs are captured by modifying the standard definition of the coefficient of momentum, which successfully characterizes suppression of separation and lift enhancement. The effect of angular momentum is incorporated into the modified coefficient of momentum by introducing a characteristic swirling jet velocity based on the non-dimensional swirl number. With the modified coefficient of momentum, this single value is able to categorize controlled flows into separated, transitional, and attached flows. With inadequate control input (separated flow regime), lift decreased compared to the baseline flow. Increasing the modified coefficient of momentum, flow transitions from separated to attached and accordingly results in improved aerodynamic forces. Modifying the spanwise spacing, it is shown that the minimum modified coefficient of momentum input required to begin transitioning the flow is dependent on actuator spacing. The growth (or decay) of perturbations can facilitate or inhibit the influence of flow control inputs. Biglobal stability analysis is considered to further analyze the behavior of control inputs on separated flow over a symmetric airfoil. Assuming a spanwise periodic waveform for the perturbations, the eigenvalues and eigenvectors about a base flow are solved to understand the influence of spanwise variation on the development of the flow. Two algorithms are developed and validated to solve for the eigenvalues of the flow: an algebraic eigenvalue solver (matrix based) and a time-stepping algorithm. The matrix based approach is formulated without ever storing the matrices, creating a computationally memory efficient algorithm. Based on the matrix based solver, eigenvalues and eigenvectors are identified for flow over a NACA 0015 airfoil at Re = 200, $600, and $1,000. All three cases contain similar modes, although the growth rate of the leading eigenvalue is decreased with increasing Reynolds number. Three distinct types of modes are found, wake mode, steady mode, and modes of the continuous branch. While this method is limited in the range of Reynolds numbers, these results are used to validate the time-stepper approach. Increasing the Reynolds number to Re = 23,000 over a NACA 0012 airfoil, the time-stepper method is implemented due to rising computational cost of the matrix-based method. Stability analysis about the time-averaged flow is performed for spanwise wavenumbers of β = 1$, $10π, and $20π, which the latter two wavenumbers are representative of the spanwise spacing between the actuators. The largest spanwise wavelength (β = 1$) contained unstable modes that ranged from low to high frequency, and a particular unstable low-frequency mode corresponding to a frequency observed in the lift forces of the baseline large-eddy simulation. For the larger spanwise wavenumbers, β = 10π ($L_z/c = 0.2$) and $20π ($L_z/c = 0.1$), low-frequency modes were damped and only modes with $f > 5$ were unstable. These results help us gain further insight into the influence of the flow control inputs. Flow control is not implemented in a manner to directly excite specific modes, but does dictate the spanwise wavelengths that can be generated. Comparing the unstable eigenmodes at these two spacings, the larger spanwise spacing ($\beta = 10\pi$) had a greater growth rate for the majority of the unstable modes. The smaller spanwise spacing ($\beta = 20\pi$) has only a single unstable mode with a growth rate an order of magnitude smaller than $\beta = 10\pi$. With the aid of the increased growth rate, perturbations to the flow with a wider spacing become more effective by interacting with natural modes of the flow. Taking advantage of these natural modes allows for decreased input for the wider spanwise spacing. In conclusion, it was shown that the influence of wall-normal and angular momentum inputs on fully separated flow can adequately be described by the modified coefficient of momentum. Through further analysis and the development of a biglobal stability solver, spanwise spacing effects observed in the flow control study can be explained. The findings from this study should aid in the development of more intelligently designed flow control strategies and provide guidance in the selection of flow control actuators.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Munday_fsu_0071E_13086
Format: Thesis

Title: Active Thermal Management and Fault-Tolerant Control for Switching Power Converters with Sequence-Based Control.
Creator: Ozkan, Gokhan, Pamidi, Sastry V., Ordóñez, Juan Carlos, Edrington, Christopher S., Foo, Simon Y., Anubi, Olugbenga Moses, Florida State University, FAMU-FSU College of...
Show moreOzkan, Gokhan, Pamidi, Sastry V., Ordóñez, Juan Carlos, Edrington, Christopher S., Foo, Simon Y., Anubi, Olugbenga Moses, Florida State University, FAMU-FSU College of Engineering, Department of Electrical and Computer Engineering
Show less
Abstract/Description: With the developments in semiconductor technology, power electronic devices have had a crucial role in power systems. They are employed in a different variety of applications, including but not limited to energy conversation and grid connection for renewable energy sources, motor drive systems in electric vehicles and industrial systems, and AC/DC power conversion in the ship power system (SPS). Especially, medium-voltage DC (MVDC) distribution systems are highly interested in future ship...
Show moreWith the developments in semiconductor technology, power electronic devices have had a crucial role in power systems. They are employed in a different variety of applications, including but not limited to energy conversation and grid connection for renewable energy sources, motor drive systems in electric vehicles and industrial systems, and AC/DC power conversion in the ship power system (SPS). Especially, medium-voltage DC (MVDC) distribution systems are highly interested in future ship power systems, therefore, power converter devices and their control systems will be commonly used in the ship. The increasingly using of power electronics in power systems leads to new challenges including but not limited to reducing Total Harmonic Distortion (THD) and system cost, improving reliability and lowering the system complexity. In addition, some of the applications may have limited weight and space capacity such as wind turbines and SPS. Thus, the weight and size of the power converter and its cooling system should be taken into account. To minimize the size of the power converters, high-frequency switching is used to reduce the required passive filters. However, this causes additional thermal stress on semiconductor switches due to increasing of the switching losses which also have a negative impact on the cost of energy. Power converters and their control algorithm must provide highly efficient power conversion to reduce the cost of wasted power and energy dissipation to minimize the necessary cooling system. In addition to this, the aging and losses of switching devices in the power converter are mainly related to its junction temperature. One of the main approaches to improve the lifetime of semiconductors is the ability to control the junction temperature of the semiconductor module by controlling the switching losses during the switching state while providing power quality in the required limits and maintaining voltage stability, referred to as active thermal control. Sequence-based control is chosen in this study for its ability to deal with the system nonlinearities, control multiple constraints simultaneously with guaranteeing the system requirements and ensure the stability. The method is developed and the simulation is performed using MATLAB/Simulink software to validate the performance of the algorithm and tune the control parameters. The simulation results show that the proposed method can control the switching losses by influencing the switching sequence for a two-level three-phase active front end rectifier. For the validation, the influence of the proposed method on a two-level three-phase active rectifier is demonstrated experimentally by using Control Hardware-in-the-Loop (CHIL) setup. These will be tested utilizing the Texas Instrument (TI) C2000 XL LaunchPad controller and Opal-RT real-time simulator to perform CHIL experiments.
Show less
Date Issued: 2019
Identifier: 2019_Fall_Ozkan_fsu_0071E_15544
Format: Thesis

Title: Acute Triggered Migraine: Evaluating the Trinity Complicit in Neurological Disorders.
Creator: Abad, Nastaren, Grant, Samuel C., Levenson, Cathy W., Harrington, Michael G., Li, Yan, Guan, Jingjiao, Florida State University, FAMU-FSU College of Engineering, Department of...
Show moreAbad, Nastaren, Grant, Samuel C., Levenson, Cathy W., Harrington, Michael G., Li, Yan, Guan, Jingjiao, Florida State University, FAMU-FSU College of Engineering, Department of Chemical and Biomedical Engineering
Show less
Abstract/Description: Migraine is a disabling, multifactorial recurrent neurological disorder. Affecting approximately 38 million people in the United States alone, migraine is recognized by the World Health Organization as the 7th most disabling condition, due to the sufferer’s inability to perform everyday activities. The characterization, classification and diagnosis of migraine is complex due to the tremendous cohort of variable clinical triggers and symptoms reported. Collectively, the symptoms accompanying...
Show moreMigraine is a disabling, multifactorial recurrent neurological disorder. Affecting approximately 38 million people in the United States alone, migraine is recognized by the World Health Organization as the 7th most disabling condition, due to the sufferer’s inability to perform everyday activities. The characterization, classification and diagnosis of migraine is complex due to the tremendous cohort of variable clinical triggers and symptoms reported. Collectively, the symptoms accompanying migraine implicate multiple neural networks and processes functioning abnormally. A mechanistic search for a common denominator based on the symptoms in human migraine potentially involves the recruitment of the thalamic region (fatigue, depression, irritability and food cravings), brainstem (muscle tenderness and neck stiffness), cortex (photo- and phono-sensitivity) and limbic response (depression and anhedonia). The prevailing consensus in the migraine community appears to indicate a combination of neuronal and vascular involvement with the trigeminal vascular system (TGVS) complicit in the progression of migraine. Broadly, various triggers initiate migraine to differing degrees and treatment methodologies target a variety of pathways with varied results; the fundamental mechanism driving change is unclear. In the absence of an identifiable locus for anatomical, biochemical or pathological change in common clinical migraine, a fundamental question remains unanswered: What endogenous media and pathways link the stimulus to perception of migraine and potentially pain? To address this question and evaluate sodium as a likely mediator of migraine, this dissertation characterizes the acute onset of a chemically consistent nitroglycerin, triggered migraine in rodents using high field magnetic resonance techniques. For this neurovascularly coupled system, three fundamental mechanisms complicit in neuronal disorders were targeted: ionic fluxes using sodium magnetic resonance imaging, metabolic changes by utilizing proton spectroscopy and hemodynamic alterations by employing perfusion techniques to image blood flow. Though not mutually exclusive events, dynamic increases in sodium and metabolic activity (including both apparent concentration increases and compartmental redistribution) are localized to specific neuroanatomical structures and pre-exist perfusion changes, implicating sodium fluxes as a potential mediator of central sensitization and migraine propagation.
Show less
Date Issued: 2019
Identifier: 2019_Fall_Abad_fsu_0071E_15528
Format: Thesis

Title: Adapt and Prevail: New Applications of Rhythmic and Metric Analysis in Contemporary Metal Music.
Creator: Garza, Jose Manuel, Clendinning, Jane Piper, Parks, John Will, Kraus, Joseph Charles, Richards, Mark C., Florida State University, College of Music
Abstract/Description: Much recent scholarship on metal music has treated the repertoire through historical and ethnomusicological lenses. While the theoretical literature has engaged certain significant artists– particularly Meshuggah and Dream Theater—several important bands and aspects of the music have been overlooked. Especially significant is the relative lack of writing focusing on rhythmic and metric elements of this music which shape a large part of these genres’ distinctive sounds. My goals for this...
Show moreMuch recent scholarship on metal music has treated the repertoire through historical and ethnomusicological lenses. While the theoretical literature has engaged certain significant artists– particularly Meshuggah and Dream Theater—several important bands and aspects of the music have been overlooked. Especially significant is the relative lack of writing focusing on rhythmic and metric elements of this music which shape a large part of these genres’ distinctive sounds. My goals for this dissertation are twofold. First, this document serves as a style study with regard to rhythm, meter, hypermeter, and phrase rhythm as heard in contemporary metal music (i.e., metal music from around the mid-1990s to the present). Second, I demonstrate how the ways in which contemporary metal artists manipulate rhythm, meter, hypermeter, and phrase rhythm introduce new concepts or extensions of existing modes of analyses. I problematize two metric devices, namely asymmetric meter and metric modulation, as they apply to popular music, demonstrating applications of my conceptual framework to the contemporary metal repertoire. In my analyses, I adapt existing methodologies by Lerdahl and Jackendoff (1983), Temperley (2001), Pearsall (1997), Rothstein (1989), and Krebs (1999), specifically Lerdahl and Jackendoff’s and Temperley’s preference-rule systems, Pearsall’s durational set notation, Rothstein’s descriptions of manipulations of hypermeter and phrase rhythm, and Krebs’s two types of metrical dissonance. Although the sources on which I base aspects of this study deal largely with a different repertoire than mine, the similarities between common-practice Western art music and popular music (including contemporary metal) warrant a similar approach. Where the repertoires diverge—particularly with regard to harmonic syntax and the nuances of metrical dissonance—I suggest alternative methods that address the idiosyncrasies of contemporary metal music. Despite the limited body of works I use for this dissertation, I maintain that the analytical models I propose here are applicable to a wider range of popular music. Therefore, with this document, I contribute to the broader cause of rhythm and meter studies in popular music scholarship.
Show less
Date Issued: 2017
Identifier: FSU_FALL2017_Garza_fsu_0071E_14184
Format: Thesis

Title: Adding Community to Care, Custody, and Control: Organizational, Staff, and Inmate Perceptions of Jail-Based Reentry Programming.
Creator: Singer, Alexa J., Gertz, Marc G., Gussak, David, Hay, Carter H., Blomberg, Thomas G., Florida State University, College of Criminology and Criminal Justice
Abstract/Description: There is a great deal of research about prisons, but there is a gap in research about jails in the correctional literature. This is particularly true for research about jail inmate reentry. Much of what is known is descriptive in nature, and there is a lack of focus on jail inmate reentry both in research and in practice, likely due to the many barriers associated with implementing jail-based reentry programming. Jails are organizations and as such can be studied using organizational theories...
Show moreThere is a great deal of research about prisons, but there is a gap in research about jails in the correctional literature. This is particularly true for research about jail inmate reentry. Much of what is known is descriptive in nature, and there is a lack of focus on jail inmate reentry both in research and in practice, likely due to the many barriers associated with implementing jail-based reentry programming. Jails are organizations and as such can be studied using organizational theories, specifically functional systems analysis. This dissertation takes a functional systems analysis approach to provide an in-depth look at a large Central Florida Jail to understand its formally stated goals, how these goals work in practice, how they have changed over time, and whether this jail is achieving organizational efficiency and accomplishing its goals. This study examines three parts of this organization: (1) the organization as a whole, (2) the staff, and (3) the inmates. To do so, it makes use of three data sources and methods: (1) a content analysis of annual reports and strategic plans, (2) coding of in-depth qualitative interviews with jail staff, and (3) and quantitative analyses (OLS) of surveys of jail inmates. The annual reports and interviews of jail staff determine how the focus on reentry has changed over time at the organizational level and the inmate surveys examine the influence of reentry programming participation on inmate perceptions of post-release success, perceived importance of various reentry-related issues for staying out of jail, and inmate self-perceptions. The findings suggest that there has been an increased focus on reentry over the last two decades in this jail, as the jail has shifted its focus from being primarily interested in safety-related goals to being interested in rehabilitating inmates and helping them to successfully return to society. Despite this shift, results also show that the programs offered to inmates do not increase inmates' perceived preparedness, perceived importance of reentry, or self-perceptions.
Show less
Date Issued: 2019
Identifier: 2019_Summer_Singer_fsu_0071E_15358
Format: Thesis

Title: Advice and Discontent: Staging Identity through Legal Representation on the British Stage, 1660-1800.
Creator: Cerniglia, Sarah Morrow, Burke, Helen M., Upchurch, Charles, Daileader, Celia R., Ward, Candace, Florida State University, College of Arts and Sciences, Department of English
Abstract/Description: One of the key issues that arises when discussing the long eighteenth century is that of identity: self/individual, and group/national. Whereas recent critical work in both literary studies and historiography has concerned itself with the circumstances surrounding the long eighteenth century's fundamental shifts in conceptions of identity, much of this work overlooks the potential for identity to be relational, rather than either exterior or interior to an individual/group. This dissertation...
Show moreOne of the key issues that arises when discussing the long eighteenth century is that of identity: self/individual, and group/national. Whereas recent critical work in both literary studies and historiography has concerned itself with the circumstances surrounding the long eighteenth century's fundamental shifts in conceptions of identity, much of this work overlooks the potential for identity to be relational, rather than either exterior or interior to an individual/group. This dissertation explores the relational nature of identity formation in the long eighteenth century by examining a literary genre and a character that depend upon relational interactions in order to sustain themselves: stage comedies and lawyers. Representative dramatic comedies by writers such as George Farquhar, Richard Cumberland, Thomas Lewis O'Beirne, William Wycherly, Christopher Bullock, Henry Fielding, John O'Keeffe, Colley Cibber, George Colman and David Garrick, and Samuel Foote, offer opportunities to study staged representations of lawyers whose clients' issues essentially become those of identity formation. This dissertation argues that, for many characters struggling to establish an identity that can participate in a national British identity, the key to such participation lies in access to real property; when access to real property is denied them, they must turn to someone who is himself struggling to establish an identity. At this point, lawyers in eighteenth-century British comedies become much more than stock characters or mere comic relief. Instead, the lawyer—often ostracized and derided himself—becomes a mediator not just of individual identity, but of "Britishness." Careful attention to lawyers' success representing different types of clients struggling to establish identities through access to real property highlights both the power of relational identity formation and the key roles that arguably minor characters have in arbitrating issues of national significance.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Cerniglia_fsu_0071E_13700
Format: Thesis

Title: Aeroacoustic Characteristics of Supersonic Impinging Jets.
Creator: Worden, Theodore James, Alvi, Farrukh S., Shih, Chiang, Liang, Zhiyong Richard, Collins, Emmanuel G., Gustavsson, Jonas, Kumar, Rajan (Professor of Mechanical Engineering),...
Show moreWorden, Theodore James, Alvi, Farrukh S., Shih, Chiang, Liang, Zhiyong Richard, Collins, Emmanuel G., Gustavsson, Jonas, Kumar, Rajan (Professor of Mechanical Engineering), Michalis, Krista, Florida State University, College of Engineering, Department of Mechanical Engineering
Show less
Abstract/Description: High-speed impinging jets are often generated by the propulsive systems of aerospace launch vehicles and tactical aircraft. In many instances, the presence of these impinging jets creates a hazard for flight operations personnel due to the extremely high noise levels and unsteady loads produced by fluid-surface interaction. In order to effectively combat these issues, a fundamental understanding of the flow physics and dominant acoustic behavior is essential. There are inherent challenges in...
Show moreHigh-speed impinging jets are often generated by the propulsive systems of aerospace launch vehicles and tactical aircraft. In many instances, the presence of these impinging jets creates a hazard for flight operations personnel due to the extremely high noise levels and unsteady loads produced by fluid-surface interaction. In order to effectively combat these issues, a fundamental understanding of the flow physics and dominant acoustic behavior is essential. There are inherent challenges in performing such investigations, especially with the need to simulate the flowfield under realistic operational conditions (temperature, Mach number, etc.) and in configurations that are relevant to full-scale application. A state-of-the-art high-temperature flow facility at Florida State University has provided a unique opportunity to experimentally investigate the high-speed impinging jet flowfield at application-relevant conditions. Accordingly, this manuscript reports the findings of several experimental studies on high-temperature supersonic impinging jets in multiple configurations. The overall objective of these studies is to characterize the complex relationship between the hydrodynamic and acoustic fields. A fundamental parametric investigation has been performed to document the flowfield and acoustic characteristics of an ideally-expanded supersonic air jet impinging onto a semi-infinite flat plate at ambient and heated jet conditions. The experimental program has been designed to span a widely-applicable geometric parameter space, and as such, an extensive database of the flow and acoustic fields has been developed for impingement distances in the range 1d to 12d, impingement angles in the range 45 degrees to 90 degrees, and jet stagnation temperatures from 289K to 811K (TTR=1.0 to 2.8). Measurements include point-wise mean and unsteady pressure on the impingement surface, time-resolved shadowgraphy of the flowfield, and fully three-dimensional near field acoustics. Aside from detailed documentation of the flow and acoustic fields, this work aims to develop a physical understanding of the noise sources generated by impingement. Correlation techniques are employed to localize and quantify the spatial extent of broadband noise sources in the near-impingement region and to characterize their frequency content. Additionally, discrete impingement tones are documented for normal and oblique incidence angles, and an empirical model of the tone frequencies has been developed using velocity data extracted from time-resolved shadowgraphy together with a simple modification to the conventional feedback formula to account for non-normal incidence. Two application-based studies have also been undertaken. In simulating a vertical take-off and landing aircraft in hover, the first study of a normally-impinging jet outfitted with lift-plate characterizes the flow-acoustic interaction between the high-temperature jet and the underside of an aircraft and documents the effectiveness of an active flow control technique known as `steady microjet injection' to mitigate high noise levels and unsteady phenomena. The second study is a detailed investigation of the jet blast deflector/carrier deck configuration aimed at gaining a better understanding of the noise field generated by a jet operating on a flight deck. The acoustic directionality and spectral characteristics are documented for a model-scale carrier deck with particular focus on locations that are pertinent to flight operations personnel.
Show less
Date Issued: 2017
Identifier: FSU_SUMMER2017_Worden_fsu_0071E_13997
Format: Thesis

Title: An Aeroacoustic Characterization of a Multi-Element High-Lift Airfoil.
Creator: Pascioni, Kyle A., Cattafesta, Louis N., Sussman, Mark, Alvi, Farrukh S., Xu, Cheryl, Choudhari, Meelan, Florida State University, College of Engineering, Department of...
Show morePascioni, Kyle A., Cattafesta, Louis N., Sussman, Mark, Alvi, Farrukh S., Xu, Cheryl, Choudhari, Meelan, Florida State University, College of Engineering, Department of Mechanical Engineering
Show less
Abstract/Description: The leading edge slat of a high-lift system is known to be a large contributor to the overall radiated acoustic field from an aircraft during the approach phase of the flight path. This is due to the unsteady flow field generated in the slat-cove and near the leading edge of the main element. In an effort to understand the characteristics of the flow-induced source mechanisms, a suite of experimental measurements has been performed on a two-dimensional multi-element airfoil, namely, the MD...
Show moreThe leading edge slat of a high-lift system is known to be a large contributor to the overall radiated acoustic field from an aircraft during the approach phase of the flight path. This is due to the unsteady flow field generated in the slat-cove and near the leading edge of the main element. In an effort to understand the characteristics of the flow-induced source mechanisms, a suite of experimental measurements has been performed on a two-dimensional multi-element airfoil, namely, the MD-30P30N. Particle image velocimetry provide mean flow field and turbulence statistics to illustrate the differences associated with a change in angle of attack. Phase-averaged quantities prove shear layer instabilities to be linked to narrowband peaks found in the acoustic spectrum. Unsteady surface pressure are also acquired, displaying strong narrowband peaks and large spanwise coherence at low angles of attack, whereas the spectrum becomes predominately broadband at high angles. Nonlinear frequency interaction is found to occur at low angles of attack, while being negligible at high angles. To localize and quantify the noise sources, phased microphone array measurements are per- formed on the two dimensional high-lift configuration. A Kevlar wall test section is utilized to allow the mean aerodynamic flow field to approach distributions similar to a free-air configuration, while still capable of measuring the far field acoustic signature. However, the inclusion of elastic porous sidewalls alters both aerodynamic and acoustic characteristics. Such effects are considered and accounted for. Integrated spectra from Delay and Sum and DAMAS beamforming effectively suppress background facility noise and additional noise generated at the tunnel wall/airfoil junction. Finally, temporally-resolved estimates of a low-dimensional representation of the velocity vector fields are obtained through the use of proper orthogonal decomposition and spectral linear stochastic estimation. An estimate of the pressure field is then extracted by Poissons equation. From this, Curles analogy projects the time-resolved pressure forces on the airfoil surface to further establish the connection between the dominating unsteady flow structures and the propagated noise.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Pascioni_fsu_0071E_13776
Format: Thesis

Title: Affective Labor Power in Sport Management: A Political Economic Analysis of Internships in the Sports Industry.
Creator: Hawzen, Matthew G., Newman, Joshua I., Giardina, Michael D., Xue, Hanhan, Florida State University, College of Education, Department of Sport Management
Abstract/Description: Internships are an integral part of the job-training regimen for college students in the United States today. The prevalence of internships in higher education and the U.S. economy is often justified by the compelling idea that internships provide mutual value to universities, students, and employers (Becker, 1962; Coco, 2000). The internship system, however, has become the subject of litigation in court, politicized as a regime of wage theft, and critiqued for its contribution to the...
Show moreInternships are an integral part of the job-training regimen for college students in the United States today. The prevalence of internships in higher education and the U.S. economy is often justified by the compelling idea that internships provide mutual value to universities, students, and employers (Becker, 1962; Coco, 2000). The internship system, however, has become the subject of litigation in court, politicized as a regime of wage theft, and critiqued for its contribution to the widening gulf between rich and poor in the United States (Perlin, 2011b). It is within this context that internships have become a core component of the academic field of sport management. Sport management has used internships as a preparatory practice since its inception in the late 1960s. Founded on the idea of training a managerial class of workers for the sports industry, sport management has grown from one program in 1966 to over 400 today. Sport management scholars argue that such growth comes from 1) the burgeoning sports industry’s demand for a trained workforce and 2) from the more and more students who want to enroll in the degree programs (Chelladurai, 2017; Masteralexis, Barr, & Hums, 2011). Despite the effective demand amongst students and the labor demand from the industry, scholars are describing the labor market as over-saturated and highly competitive (DeLuca & Braunstein-Minkove, 2016). The major consequences are an uncertain job market and suboptimal labor conditions for interns and graduates. This dissertation examines the political economy of internships within and between sport management and the sports industry and explores in this context the labor power, or productive subjectivities, of sport management majors going through the internship process. I performed in-depth semi-structured to unstructured interviews with 33 sport management majors who were at three different points in the internship process (before, during, and after). The interviews were conducted to understand the production of motivations and capacities to work in sport (or the demand for sport management); the experience of being entangled in labor market competition; the expectations for, and experiences of, interning; and the formative, and ongoing, role that sport (fandom and athletic participation) plays in the lives and labor of interns jockeying for positions in the sports industry. In my analysis, I discuss the ways in which my respondents became subjects of social reproduction between sport and capitalism and subjected to affective conditions of exploitation. I provide a critique of dominant internship orthodoxy, the function of internships in the sports industry, and the active role sport management plays in reproducing conditions of exploitation. And I illustrate how the contradictions of internships under capital give rise to passion, love, hope, and optimism as irrational yet core characteristics of the sport management workforce. After having fleshed out myriad issues with internships, I conclude with a discussion about what we can do about internships in sport management to improve the labor conditions for future interns.
Show less
Date Issued: 2018
Identifier: 2018_Su_Hawzen_fsu_0071E_14636
Format: Thesis

Title: Affine Dimension of Smooth Curves and Surfaces.
Creator: Williams, Ethan Randy, Oberlin, Richard, Ormsbee, Michael J., Reznikov, Alexander, Bauer, Martin, Florida State University, College of Arts and Sciences, Department of Mathematics
Abstract/Description: Our aim is to study the affine dimension of some smooth manifolds. In Chapter 1, we review the notions of Minkowski and Hausdorff dimension, and compare them with the lesser studied affine dimension. In Chapter 2, we focus on understanding the affine dimension of curves. In Section 2.1, we review the existing results for the affine dimension of a strictly convex curve in the plane, and in Section 2.2, we classify the smooth curves in ℝn based on affine dimension. In Chapter 3, we classify the...
Show moreOur aim is to study the affine dimension of some smooth manifolds. In Chapter 1, we review the notions of Minkowski and Hausdorff dimension, and compare them with the lesser studied affine dimension. In Chapter 2, we focus on understanding the affine dimension of curves. In Section 2.1, we review the existing results for the affine dimension of a strictly convex curve in the plane, and in Section 2.2, we classify the smooth curves in ℝn based on affine dimension. In Chapter 3, we classify the smooth hypersurfaces in ℝ3 with non-negative Gaussian curvature based on affine dimension, and in Chapter 4 we provide a lower and upper bound for the affine dimension of smooth, convex hypersurfaces in ℝn.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Williams_fsu_0071E_14512
Format: Thesis

Title: Affirmative Assertions of Black Life: Making Places of Respite in Florida A&M University's Marching 100.
Creator: Allen, Douglas L. (Douglas Loyd), Lawhon, Mary, McCreary, Tyler, Nair-Collins, Michael, Bledsoe, Adam, Doel, Ronald Edmund, Pierce, Joseph, Florida State University, College of...
Show moreAllen, Douglas L. (Douglas Loyd), Lawhon, Mary, McCreary, Tyler, Nair-Collins, Michael, Bledsoe, Adam, Doel, Ronald Edmund, Pierce, Joseph, Florida State University, College of Social Sciences and Public Policy, Department of Geography
Show less
Abstract/Description: In this dissertation, I study black geographic visions, experiences, and practices of the Marching 100 (M100) band at Florida A&M University (FAMU) and show how the black place-making practices of the Marching 100 (re)produces the black geographies of FAMU, Tallahassee, and M100 rehearsal spaces. This dissertation both draws from and makes conceptual and empirical contributions to the sub-discipline of black geographies. I show throughout this dissertation the usefulness of taking a place...
Show moreIn this dissertation, I study black geographic visions, experiences, and practices of the Marching 100 (M100) band at Florida A&M University (FAMU) and show how the black place-making practices of the Marching 100 (re)produces the black geographies of FAMU, Tallahassee, and M100 rehearsal spaces. This dissertation both draws from and makes conceptual and empirical contributions to the sub-discipline of black geographies. I show throughout this dissertation the usefulness of taking a place-making approach in studying black geographies and focus on how black place-making can be deployed as part of an affirmative celebration of black life. Conceptually, I draw on black feminist scholars to offer scholars interested in affirmative black geographies places of respite as an analytic and ontological object that is produced by (and productive of) visions and practices of black life. These places, I argue, provide relief from the burdens of oppressive articulations of society and space, and their existence amounts to a critique of these oppressive articulations. These places also offer opportunities to resist and heal harms of oppression. I also analyze the use of celebration as an affirmative, transgressive claiming of place within the city. Such celebrations, I argue, are transgressive place-making practices that can transform places and extend, temporarily, the sense of belonging places of respite provide. I also show, however, the precarity of black place-making claims. Together these chapters show the socio-spatial power of black joy/celebration and highlight the importance of black life in the production of black geographies.
Show less
Date Issued: 2019
Identifier: 2019_Spring_Allen_fsu_0071E_15108
Format: Thesis

Title: After Essentialism: Possibilities in Phenomenology of Religion.
Creator: Lupo, Joshua S., Kavka, Martin, Williamson, George S., Kalbian, Aline H., Kelsay, John, Florida State University, College of Arts and Sciences, Department of Religion
Abstract/Description: Scholars of religion and the humanities more often than not claim to engage in critical inquiry. Too often, however, these claims are not adequately justified. To resolve this problem, this dissertation turns to the philosophical movement known as phenomenology. Inaugurated by Edmund Husserl and developed by Martin Heidegger, this philosophical movement, at its best, has focused on how our consciousness of the world is structured by our intentional relation with it. At its worst, this...
Show moreScholars of religion and the humanities more often than not claim to engage in critical inquiry. Too often, however, these claims are not adequately justified. To resolve this problem, this dissertation turns to the philosophical movement known as phenomenology. Inaugurated by Edmund Husserl and developed by Martin Heidegger, this philosophical movement, at its best, has focused on how our consciousness of the world is structured by our intentional relation with it. At its worst, this tradition of philosophy has supported essentialism, that is, the belief that we can bracket our social, political, and historical contexts and in doing so attain unchanging knowledge of our world. The phenomenological method has a complex history within the study of religion. Phenomenologists of religion believed that they could discern a common essence behind different religious traditions. The phenomenological approach is no longer popular among scholars in the study of religion. Russell McCutcheon, for example, claims that the phenomenological approach has allowed scholars to implicitly protect religious traditions, and indeed the very category of religion, from criticism. For McCutcheon, when scholars essentialize religion, they place it outside the social and political realm, and make it immune from critique. On McCutcheon’s account, however, it is not simply phenomenology of religion, but the phenomenological method itself, that is to blame for this lack of critical rigor. To examine the plausibility of this claim, the first three chapters of this dissertation examine the work of three of the most widely cited phenomenologists of religion—Rudolf Otto, Gerardus van der Leeuw, and Mircea Eliade—and show how their work does and does not share in the same philosophical assumptions as Husserl and Heidegger. I contend that much of their work does suffer from the problem of essentialism that McCutcheon identifies. I also contend that some of the blame for this should be pinned on Husserl, for whom essential knowledge remained an important aspiration. This, however, does not mean that all phenomenology should be abandoned. In the fourth chapter, I argue that existential phenomenology not only allows for critical analysis, but also offers a more plausible grounding for critique. McCutcheon’s method seeks to fix our knowledge of the world by arguing that our claims about it, including our claims about religion, are constituted by power relations. But if this were the case, scholarship itself would simply be an expression of power, and for that reason its critiques could never be evaluated using criteria established by reason. Through an examination of Heidegger’s early lectures and Being and Time, I provide a justification for a critical approach to examining religious traditions. What makes Heidegger’s account useful, I contend, is his analysis of the formation of a subject who can take up and critique the norms that govern his or her life, not by placing him- or herself outside of his or her tradition, but by taking up a place within it. This grounding makes possible a non-essentialist approach to critique. It takes the content of our lives to be made up of the historically, socially, and politically contingent norms that govern us. But it also offers an account of how we can take up and critique those norms. In the final chapter of the dissertation, I cash out this approach’s usefulness by turning to recent debates surrounding natural law. As opposed to some approaches to natural law reasoning which claim that there are essential moral and ethical goods that make up the natural law and transcend our contexts, Jean Porter and Vincent Lloyd argue for a tradition-based approach to natural law that takes the content of the natural law to be dependent upon the social and historical contexts in which proponents of natural law locate themselves. I argue that John Finnis and Germain Grisez, along with two critics of Finnis and Grisez, Lisa Cahill and Cristina Traina, desire to fix the content of the natural law in an essentialist manner, and that Porter and Lloyd offer a more compelling account of natural law reasoning that is amenable to Heidegger’s existential phenomenology. This chapter thus shows how the previously proposed phenomenological account of selfhood can be used to critique a religious tradition without fixing that tradition as either a manifestation of a sacred reality or of power. The dissertation ends with a reflection on the role of irony in the study of religion, arguing that irony should be used by scholars to challenge the status quo, but should not be used cynically to suggest that there is no way to move beyond it.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Lupo_fsu_0071E_14397
Format: Thesis

Title: Against Reason a Defense of Moderate Normative Skepticism.
Creator: Vadakin, Aron, Mele, Alfred R., Kavka, Martin, Rawling, Piers, Clarke, Randolph K., Florida State University, College of Arts and Sciences, Department of Philosophy
Abstract/Description: This dissertation both surveys contemporary work in metanormativity and argues for a position that I call moderate normative skepticism. I begin by evaluating efforts to characterize the normative domain and conclude that while some normative concepts and properties are amenable to naturalistic programs of reduction and analysis, other normative concepts and properties are not. I proceed to clarify accounts of reasons, reasoning, and rationality; this establishes argumentative room to...
Show moreThis dissertation both surveys contemporary work in metanormativity and argues for a position that I call moderate normative skepticism. I begin by evaluating efforts to characterize the normative domain and conclude that while some normative concepts and properties are amenable to naturalistic programs of reduction and analysis, other normative concepts and properties are not. I proceed to clarify accounts of reasons, reasoning, and rationality; this establishes argumentative room to maneuver for my moderate normative skepticism. Next, I evaluate moral error theories, which I count as close cousins of my own thesis, and I note how these error theories have more profound implications than their authors realize. I claim that, understood properly, these error theories extend to the domain of normative reasons in general. I accept and defend the extension of error theory as a viable position. In the final chapter of my dissertation, I defend my position against charges of self-defeat and attempt to anticipate and defuse potential criticisms.
Show less
Date Issued: 2017
Identifier: FSU_FALL2017_Vadakin_fsu_0071E_14258
Format: Thesis

Title: An Agential Exploration of Tragedy and Irony in Post-1945 Orchestral Works.
Creator: Lee, Richard C., Kraus, Joseph Charles, Gontarski, S. E., Buchler, Michael Howard, Jones, Evan Allan, Florida State University, College of Music
Abstract/Description: This analytic dissertation explores tragic and ironic narratives in post-1945 orchestral works through the lens of musical agency and critical theory. For the purposes of this study, I define musical narrative as any sequencing of musical events mediated by agency in which a musical story emerges that underscores the sequence of musical events. My definition and overall methodology for musical narrative follows the work of Lawrence Kramer, Michael Klein, and Byron Almén as I explore tragedy...
Show moreThis analytic dissertation explores tragic and ironic narratives in post-1945 orchestral works through the lens of musical agency and critical theory. For the purposes of this study, I define musical narrative as any sequencing of musical events mediated by agency in which a musical story emerges that underscores the sequence of musical events. My definition and overall methodology for musical narrative follows the work of Lawrence Kramer, Michael Klein, and Byron Almén as I explore tragedy and irony in three large-scale compositions composed after World War II. From Kramer, I break down the narrative process into three components: (1) narrativity, what generates a narrative account; (2) narratography, the discoursing of a narrative; and (3) narrative, the musical story that accompanies the discourse. From Klein (and others), I borrow concepts from intertextuality, critical theory, literary theory, and philosophy to inform these musical stories. Finally, from Almén, I take the tragic narrative archetype as an organizational analytical tool in my analyses. The primary narrativity in each analysis is a form of musical agency, and each analysis questions the role of agency in the interpretation of tragic musical stories in these post-1945 works. For the purposes of this study, musical agency is defined as a perceived entity's ability to interact with its environment, often emerging as personification of musical events. Scholars differ on how agencies interact: whether they have volition and intention, whether they arise as a singular subjectivity, what kind of space they inhabit, etc. While some depict musical agency as a messy endeavor, others aim to provide a structure for its interpretation. As an organizing principle, I use Seth Monahan's four agential classes to focus my discussion. Each chapter generally addresses one of the following: (1) the individuated element (notes, harmonies, themes), (2) the work-persona (the personification of the whole piece), (3) the fictional composer (the being postulated by the analyst as the controlling author of a work), and (4) the analyst. Hence, after an introduction, each of the succeeding chapters of this dissertation focuses on one agential class as a guiding narrativity. I bring narrative and agency together by borrowing ideas from literary theory, psychoanalysis, and philosophy. In chapter two I explore the agential class of the work-persona in Krzysztof Penderecki's Third Symphony, in which the work-persona laments and dies twice, yielding a scenario described by Slavoj Žižek as the "two deaths." In that reading one death is real and the other is symbolic, and the ordering of the deaths in Penderecki's symphony leads the analyst to read the scenario tragically. The two deaths generate the interpretation of death as a master signifier, borrowing from the work of Jacques Lacan. The master signifier then guides the analytical decisions that are made. In my analysis of Thomas Adès's Asyla in chapter three, fictional composer agencies are locked in a power struggle, leading to a reading that evokes Michel Foucault's conceptualizations of power and panopticism. Investigating the individuated element agency in chapter four, I posit that George Rochberg's conservative employment of serial technique in his Symphony No. 2 leads to a reading of belatedness that supplements its commentary on the tragedy of the Second World War. My final chapter serves as an analysis of the analyst, the highest ranking of Monahan's agential classes. Here I describe the three analyses of the preceding chapters as three component parts that contribute to an analyst's machine, following the philosophy of Gilles Deleuze. The analyst's machine serves as a departure point for an exploration of analytical subjectivity. I begin that inquiry by positioning the analyst in a virtual space (as opposed to an actual space). I next parallel Lacan's formulation of the identity with the analytical process, tracing how analysts build their identity through a combination of received components, resulting in a fractured subjectivity. Finally, I bring back the idea of fiction (from the fictional composer agency) to establish a fictional analyst who is a Deleuzian assemblage of refrains and avatars that carries out an analysis. The goal of this dissertation is to uncover narrative approaches to post-1945 music by combining familiar analytical tools with interdisciplinary methodologies. Focusing on a certain agential class as a narrativity, the individual analyses of tragic works by Penderecki, Adès, and Rochberg lead to a reconsideration of the analyst in the concluding chapter—and that chapter serves as a starting point for future analytical and theoretical endeavors.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Lee_fsu_0071E_13774
Format: Thesis

Title: Aging in Activity Spaces: Understanding the Automobility of Aging Populations.
Creator: Wood, Brittany S. (Brittany Suzanne), Horner, Matthew I. (Matthew Ian), Brown, Jeffrey R., Uejio, Christopher K., Folch, David C., Florida State University, College of Social...
Show moreWood, Brittany S. (Brittany Suzanne), Horner, Matthew I. (Matthew Ian), Brown, Jeffrey R., Uejio, Christopher K., Folch, David C., Florida State University, College of Social Sciences and Public Policy, Department of Geography
Show less
Abstract/Description: The proportion of individuals aged 65 and over is growing at an astronomical rate in the United States, and some estimate that this demographic age group will double by the year 2025. Aging adults are primarily dependent on the personal automobile as their main source of transportation. Older adults and adults nearing retirement age also tend to reside in suburban neighborhoods and rely heavily on personal vehicles. Since most of the United States is characterized by automobile dependent...
Show moreThe proportion of individuals aged 65 and over is growing at an astronomical rate in the United States, and some estimate that this demographic age group will double by the year 2025. Aging adults are primarily dependent on the personal automobile as their main source of transportation. Older adults and adults nearing retirement age also tend to reside in suburban neighborhoods and rely heavily on personal vehicles. Since most of the United States is characterized by automobile dependent suburbanization, where the majority of development is suburban low-density sprawl, this may become problematic for aging populations who may be uncomfortable driving longer distances and making more trips. These trends invite the question of whether the deck is stacked against individuals approaching retirement age (50-64) and aging populations (65 and up). This study examines aging populations’ mobility and determines whether they have different travel patterns than their younger cohorts. Additionally, this investigation explores whether or not travel patterns across age groups result in differential access to particular goods and services, as well as differences in travel environment characteristics in a metropolitan area. This research proposes an approach based on Time Geographic Density Estimation (TGDE) to identify activity spaces across different age cohorts in order to identify differences in the mobility and travel behavior of aging adults. TGDE is an established technique in the literature, which blends the notion of activity spaces with the computation of probabilistic potential path trees along a transportation system. In this way it establishes an ‘extent’ or overall mapping of the activity space of an individual, but is able to further refine that extent to identify the most likely places they are able to visit within that geography. Data on origin and destination trips and travel times are taken from the National Household Travel Survey (NHTS) Florida add-on for the study area of Orlando Metropolitan Statistical Area (MSA). Transportation is an important consideration in planning for aging populations, and analyzing differences in how older adults travel compared to their younger counterparts can offer insight into the diverse needs of this group.
Show less
Date Issued: 2017
Identifier: FSU_SUMMER2017_Wood_fsu_0071E_13926
Format: Thesis

Title: The Aging Inmate Crisis: Institutional Adjustment and Post-Prison Outcome Differences between Older and Younger Prisoners.
Creator: Scaggs, Samuel J. A., Bales, William D., Radey, Melissa, Mears, Daniel P., Blomberg, Thomas G., Florida State University, College of Criminology and Criminal Justice, College of...
Show moreScaggs, Samuel J. A., Bales, William D., Radey, Melissa, Mears, Daniel P., Blomberg, Thomas G., Florida State University, College of Criminology and Criminal Justice, College of Criminology and Criminal Justice
Show less
Abstract/Description: In the past two decades, the older prisoner population in the U.S. has experienced unprecedented growth (Carson & Sabol, 2016; Scaggs & Bales, 2016). In fact, older prisoners represent the fastest growing inmate population (Carson & Sabol, 2016). This growth has become an important policy concern for government officials and correctional administrators because these prisoners are substantially more expensive to incarcerate and less likely to reoffend compared to younger prisoners (Chettiar et...
Show moreIn the past two decades, the older prisoner population in the U.S. has experienced unprecedented growth (Carson & Sabol, 2016; Scaggs & Bales, 2016). In fact, older prisoners represent the fastest growing inmate population (Carson & Sabol, 2016). This growth has become an important policy concern for government officials and correctional administrators because these prisoners are substantially more expensive to incarcerate and less likely to reoffend compared to younger prisoners (Chettiar et al., 2012). Older prisoners are more fiscally demanding to correctional systems due to healthcare and special housing considerations (Chettiar et al., 2012; Nowotny et al., 2015; Lemieux, Dyeson, & Castiglione, 2002; Linder & Meyers, 2007; Reimer, 2008). Older prisoners also represent a diverse population comprised of different criminal history profiles. While many prisoners are first time servers in old age, others are chronic offenders who have been in and out of prison multiple times (Beckett, Peternelj-Taylor, & Johnson, 2003). However, there is a void in prior literature regarding differences in the in-prison adaptation and post-prison reentry experiences among these inmates based on being a first time server and alternative definitions of what constitutes being an 'older prisoner. The current study seeks to fill two gaps in the prior literature on older prisoners. First, it will assess how older inmates differ from younger inmates in terms of in-prison adjustment and post-prison outcomes. Previous research studies find that older prisoners are less likely to engage in most types of prison misconduct (Blowers & Blevins, 2015) and to reoffend after prison release relative to their younger counterparts (Durose et al., 2014). What is less documented in prior studies is whether the employment prospects for older ex-convicts differ from those among younger prisoners and the extent to which finding work may, in turn, affect recidivism. Second, this study highlights the heterogeneity that exists among older versus younger inmates in their prison adaptation and reentry outcomes based on age and criminal history. A large percentage of older prisoners have never been previously incarcerated in prison. The Florida Department of Corrections 2013-2014 Annual Report shows that 46.2 percent of prisoners age 50 or older were committed to prison for the first time (Florida Department of Corrections, 2014). Prior research suggests that first time older prisoners may have an especially adverse response, and ultimately adjustment, to their commitment to prison which is manifested through institutional rule violations in the presence of family conflict, suicidal thoughts, depression, and fear of death (Aday, 1994; Leigey, 2015). This study uses data from a release cohort of former prisoners in Florida from 2004 to 2011 to examine differences between younger versus older prisoners. The data include institutional measures, pre-prison employment and criminal histories, and post-prison employment and recidivism information to examine differences in prison adjustment and post-release outcomes among different age groups and being a first time server among older versus younger inmates. By examining the effects of alternative age definitions on three primary outcomes—(1) prison misconduct, (2) post-prison employment, and (3) recidivism—this study contributes to prior literatures on gerontology, prison management, age stratification of post-prison employment opportunities, and recidivism. This study's focus on using old age as a key variable for explaining in-prison and reentry process outcomes is pertinent to a broader study of gerontology because it addresses important issues faced by a special subset of older adults within society. This study also contributes to the current literature on crime over the life course by assessing if and when older inmates are likely to find short-term employment and recidivate.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Scaggs_fsu_0071E_13795
Format: Thesis

Title: Aid and College Success: The Effect of a Grant-Filled Financial Aid Package on the Academic Performance and Persistence of Traditionally Underrepresented Students in an Academic Support Program.
Creator: Starke, Tadarrayl M., Jones, Maxine Deloris, Jones, Tamara Bertrand, Hu, Shouping, Park, Toby J., Florida State University, College of Education, Department of Educational...
Show moreStarke, Tadarrayl M., Jones, Maxine Deloris, Jones, Tamara Bertrand, Hu, Shouping, Park, Toby J., Florida State University, College of Education, Department of Educational Leadership and Policy Studies
Show less
Abstract/Description: First-generation college students face unique challenges in higher education compared to students whose parents are college graduates. These students tend to come from lower socioeconomic backgrounds and face difficulty enrolling and persisting in higher education (Horn, 1998; Ishitani, 2003; Latino et al., 2018; Nunez & Cuccaro-Alamin, 1998; Warburton, Bugarin, & Nunez, 2001). They rely more on financial aid and employment to pay for college (Choy, 2001; Pratt, Harwood, Cavazos, & Ditzfeld,...
Show moreFirst-generation college students face unique challenges in higher education compared to students whose parents are college graduates. These students tend to come from lower socioeconomic backgrounds and face difficulty enrolling and persisting in higher education (Horn, 1998; Ishitani, 2003; Latino et al., 2018; Nunez & Cuccaro-Alamin, 1998; Warburton, Bugarin, & Nunez, 2001). They rely more on financial aid and employment to pay for college (Choy, 2001; Pratt, Harwood, Cavazos, & Ditzfeld, 2017), and are highly susceptible to attrition as a result of lacking the financial means to pay for college (Eitel & Martin, 2009). Postsecondary transition and academic support programs were designed to address factors affecting first-generation college student success, postsecondary transition and academic support programs (Almaraz et al., 2010; Kezar, 2000; Tate et al., 2015; Thayer, 2000; Walpole et al., 2008). Effective programs target students with the greatest financial need, assist students with navigating college, and adapt programming to student characteristics (Perna, 2015). Participants of these programs tend to have greater levels of student success compared to first-generation college students who do not participate (Ackermann, 1991; Almaraz et al., 2010; Carey, 2008; Garcia, 1991; McGlynn, 2009). At Florida State University (FSU), the Center for Academic Retention and Enhancement (CARE) is a comprehensive transition and academic support program designed to increase access and student success for first-generation college students. In 2015, FSU developed the CARE Grant to provide a minimum of 75% of the cost of attendance to CARE students in an effort to reduce the level of unmet financial need and increase student success. The purpose of the study was to explore the effects of awarding the grant-filled financial aid package on the persistence and academic achievement of first-generation college students enrolled in an academic support program. CARE provided a unique context to explore the effects of financial aid on academic performance and retention of students in an academic support program. This study is grounded in research relating to retention, first-generation college students, factors relating to their postsecondary persistence and academic success, transitional and academic support programs, financial aid and college costs, and relevant theories relating to the impact of financial aid and college costs on student retention. The research framework is influenced by Reason (2009), who developed a conceptual framework that included organizational context as an element contributing to retention. In the conceptual framework of this study, student demographics and pre-college characteristics contribute to a student’s persistence at FSU through the context of CARE participation. Financial aid and college costs variables are additional influences to a student’s persistence through to graduation. Through linear and binary logistic regression, the study analyzed the effects of multiple background, academic, and financial variables on FSU GPA, Overall GPA, and first-to-second year retention. The sample consisted of 1,425 students enrolled in CARE between summer 2013-2016 who reenrolled and received financial aid for the subsequent first term. The control group was students who enrolled in CARE in 2013 and 2014 who did not receive the CARE Grant. The study collected data on student GPAs and first-year retention to analyze the effects of the awarding the CARE Grant using data collection procedures native to FSU. The study’s findings suggested the grant had no statistically significant effect on academic performance and retention when controlling for other variables. Only high school GPA was statistically significant and positive for both FSU GPA and Overall GPA. High school GPA and Black/African American classification were statistically significant and positively related to retention. The findings are significant in advancing knowledge of first-generation student success, financial aid, and postsecondary academic support programming. Recommendations for future research include examining graduation rates for the population studied, adding additional variables to better explore what elements contribute to academic performance and retention for CARE students, and using mixed methods research to capture additional qualitative factors influencing academic performance and retention.
Show less
Date Issued: 2019
Identifier: 2019_Spring_Starke_fsu_0071E_15069
Format: Thesis

Title: Ain't No Sunshine: The Political Economy of Florida's Fight for Solar.
Creator: Huebner, Alex, Kazmer, Michelle M., Opel, Andy, Graves, Brian, Florida State University, College of Communication and Information, School of Communication
Abstract/Description: This dissertation interrogates how Florida’s major electric utility companies actively suppressed the nascent solar energy industry in their effort to consolidate solar energy production into their hands during the 2015-2016 election cycle. Along with this, newspaper coverage of this issue was analyzed to determine how the fight was presented to the public and whether prevailing commercial pressures that influence the news production process affected the coverage of this issue. Finally,...
Show moreThis dissertation interrogates how Florida’s major electric utility companies actively suppressed the nascent solar energy industry in their effort to consolidate solar energy production into their hands during the 2015-2016 election cycle. Along with this, newspaper coverage of this issue was analyzed to determine how the fight was presented to the public and whether prevailing commercial pressures that influence the news production process affected the coverage of this issue. Finally, audience commentary about this issue was explored to determine how Facebook users made sense of this issue and whether the commentary reflected the prominent themes that were also present in the news coverage. Results highlight the economic and political ties between the utility companies and their support network as well as the solar supporters and their affiliated network that squared off in this fight. Additionally, findings reveal that commercial pressures to the news production process resulted in news coverage that portrayed this issue this to the public from a small handful of viewpoints, limiting the range of perspectives from which this issue may legitimately be discussed. Furthermore, results indicate that Facebook users who commented on this issue largely reflected the same perspectives and concerns that were present in the news coverage. Final conclusions and recommendations for changes to the news production process are provided.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Huebner_fsu_0071E_14429
Format: Thesis

Title: Algorithmic Lung Nodule Analysis in Chest Tomography Images: Lung Nodule Malignancy Likelihood Prediction and a Statistical Extension of the Level Set Image Segmentation Method.
Creator: Hancock, Matthew C. (Matthew Charles), Magnan, Jeronimo Francisco, Duke, D. W., Hurdal, Monica K., Mio, Washington, Florida State University, College of Arts and Sciences,...
Show moreHancock, Matthew C. (Matthew Charles), Magnan, Jeronimo Francisco, Duke, D. W., Hurdal, Monica K., Mio, Washington, Florida State University, College of Arts and Sciences, Department of Mathematics
Show less
Abstract/Description: Lung cancer has the highest mortality rate of all cancers in both men and women in the United States. The algorithmic detection, characterization, and diagnosis of abnormalities found in chest CT scan images can aid radiologists by providing additional medically-relevant information to consider in their assessment of medical images. Such algorithms, if robustly validated in clinical settings, carry the potential to improve the health of the general population. In this thesis, we first give an...
Show moreLung cancer has the highest mortality rate of all cancers in both men and women in the United States. The algorithmic detection, characterization, and diagnosis of abnormalities found in chest CT scan images can aid radiologists by providing additional medically-relevant information to consider in their assessment of medical images. Such algorithms, if robustly validated in clinical settings, carry the potential to improve the health of the general population. In this thesis, we first give an analysis of publicly available chest CT scan annotation data, in which we determine upper bounds on expected classification accuracy when certain radiological features are used as inputs to statistical learning algorithms for the purpose of inferring the likelihood of a lung nodule as being either malignant or benign. Second, a statistical extension of the level set method for image segmentation is introduced and applied to both synthetically-generated and real three-dimensional image volumes of lung nodules in chest CT scans, obtaining results comparable to the current state-of-the-art on the latter.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Hancock_fsu_0071E_14427
Format: Thesis

Title: Algorithms for Solving Linear Differential Equations with Rational Function Coefficients.
Creator: Imamoglu, Erdal, van Hoeij, Mark, van Engelen, Robert, Agashe, Amod S. (Amod Sadanand), Aldrovandi, Ettore, Aluffi, Paolo, Florida State University, College of Arts and Sciences...
Show moreImamoglu, Erdal, van Hoeij, Mark, van Engelen, Robert, Agashe, Amod S. (Amod Sadanand), Aldrovandi, Ettore, Aluffi, Paolo, Florida State University, College of Arts and Sciences, Department of Mathematics
Show less
Abstract/Description: This thesis introduces two new algorithms to find hypergeometric solutions of second order regular singular differential operators with rational function or polynomial coefficients. Algorithm 3.2.1 searches for solutions of type: exp(∫ r dx) ⋅ ₂F₁ (a₁,a₂;b₁;f) and Algorithm 5.2.1 searches for solutions of type exp(∫ r dx) (r₀ ⋅ ₂F₁(a₁,a₂;b₁;f) + r₁ ⋅ ₂F´₁ (a₁,a₂;b₁;f)) where f, r, r₀, r₁ ∈ ℚ̅(̅x̅)̅ and a₁,a₂,b₁ ∈ ℚ and denotes the Gauss hypergeometric function. The algorithms use modular...
Show moreThis thesis introduces two new algorithms to find hypergeometric solutions of second order regular singular differential operators with rational function or polynomial coefficients. Algorithm 3.2.1 searches for solutions of type: exp(∫ r dx) ⋅ ₂F₁ (a₁,a₂;b₁;f) and Algorithm 5.2.1 searches for solutions of type exp(∫ r dx) (r₀ ⋅ ₂F₁(a₁,a₂;b₁;f) + r₁ ⋅ ₂F´₁ (a₁,a₂;b₁;f)) where f, r, r₀, r₁ ∈ ℚ̅(̅x̅)̅ and a₁,a₂,b₁ ∈ ℚ and denotes the Gauss hypergeometric function. The algorithms use modular reduction, Hensel lifting, rational function reconstruction, and rational number reconstruction to do so. Numerous examples from different branches of science (mostly from combinatorics and physics) showed that the algorithms presented in this thesis are very effective. Presently, Algorithm 5.2.1 is the most general algorithm in the literature to find hypergeometric solutions of such operators. This thesis also introduces a fast algorithm (Algorithm 4.2.3) to find integral bases for arbitrary order regular singular differential operators with rational function or polynomial coefficients. A normalized (Algorithm 4.3.1) integral basis for a differential operator provides us transformations that convert the differential operator to its standard forms (Algorithm 5.1.1) which are easier to solve.
Show less
Date Issued: 2017
Identifier: FSU_SUMMER2017_Imamoglu_fsu_0071E_13942
Format: Thesis

Title: Altered Nucleosome Positions at Transcription Start Sites in Maize Haplotypes and Mutants of Putative Chromatin Remodelers.
Creator: Stroud, Linda Kozma, McGinnis, Karen M., Hurt, Myra M., Bass, Hank W., Chadwick, Brian P., Dennis, Jonathan Hancock, Florida State University, College of Arts and Sciences,...
Show moreStroud, Linda Kozma, McGinnis, Karen M., Hurt, Myra M., Bass, Hank W., Chadwick, Brian P., Dennis, Jonathan Hancock, Florida State University, College of Arts and Sciences, Department of Biological Science
Show less
Abstract/Description: Chromatin remodelers alter DNA-histone interactions in eukaryotic organisms, and have been well characterized in yeast and Arabidopsis. While there are maize proteins with similar domains as known remodelers, the ability of the maize proteins to alter nucleosome position has not been reported. Mutant alleles of genes encoding several maize proteins (RMR1, CHR101, CHR106, CHR127, CHR156, CHB102, and CHR120) with similar functional domains to known chromatin remodelers were identified. Altered...
Show moreChromatin remodelers alter DNA-histone interactions in eukaryotic organisms, and have been well characterized in yeast and Arabidopsis. While there are maize proteins with similar domains as known remodelers, the ability of the maize proteins to alter nucleosome position has not been reported. Mutant alleles of genes encoding several maize proteins (RMR1, CHR101, CHR106, CHR127, CHR156, CHB102, and CHR120) with similar functional domains to known chromatin remodelers were identified. Altered expression of Chr101, Chr106, Chr127, Chr156, Chb102, and Chr120 was demonstrated in plants homozygous for the mutant alleles. These mutant genotypes were subjected to nucleosome position analysis to determine if misregulation of putative maize chromatin proteins would lead to altered DNA-histone interactions. Nucleosome position changes were observed in plants homozygous for chr101, chr106, chr127, chr156, chb102, and chr120 mutant alleles, suggesting that CHR101, CHR106, CHR127, CHR156, CHB102, and CHR120 may affect chromatin structure. The role of RNA polymerases in altering DNA-histone interactions was also tested. Changes in nucleosome position were demonstrated in homozygous mop2-1 individuals. These changes were demonstrated at the b1 tandem repeats and at newly identified loci. While the α-amanitin-inhibited RNA polymerase II demonstrated reduced expression of an RNA polymerase II transcribed gene, no changes in nucleosome position were detected in the α-amanitin-treated plants. Additionally, differential DNA-histone interactions and altered expression of putative chromatin remodelers in different maize haplotypes suggest a role for differentially expressed chromatin proteins in haplotype-specific variation.
Show less
Date Issued: 2017
Identifier: FSU_SUMMER2017_Stroud_fsu_0071E_13987
Format: Thesis

Title: Ambitious Instruction in Undergraduate Biology Laboratories.
Creator: Strimaitis, Anna Margaret, Southerland, Sherry A., Underwood, Nora, Andrews-Larson, Christine J., Winn, Alice A., Florida State University, College of Education, School of...
Show moreStrimaitis, Anna Margaret, Southerland, Sherry A., Underwood, Nora, Andrews-Larson, Christine J., Winn, Alice A., Florida State University, College of Education, School of Teacher Education
Show less
Abstract/Description: National recommendations for undergraduate biology education call for orchestrating opportunities for students to "figure out" scientific explanations in the classroom setting by engaging in similar disciplinary practices and discourses as scientists. One approach to realize this vision, ambitious science teaching, describes four essential practices, each of which emphasizes classroom talk as an essential feature of student understanding. However, a critical element of reform is the...
Show moreNational recommendations for undergraduate biology education call for orchestrating opportunities for students to "figure out" scientific explanations in the classroom setting by engaging in similar disciplinary practices and discourses as scientists. One approach to realize this vision, ambitious science teaching, describes four essential practices, each of which emphasizes classroom talk as an essential feature of student understanding. However, a critical element of reform is the instructor, who translates and enacts recommended practices in the classroom. This dissertation examines three specific aspects of ambitious science teaching in the context of an undergraduate biology laboratory course: how teaching assistants (TAs) take up the ambitious science teaching practice of eliciting and responding to student ideas, how TAs use positioning acts to support or constrain students' opportunities to engage in rigorous scientific discourse, and how engaging students in ambitious science teaching practices is mutually supportive for both the TAs develop as a professional scientist and the students' development of proficiency in science. The first study described how thirteen undergraduate biology TAs enacted one ambitious practice, eliciting and responding to students' initial and unfolding ideas, in a general biology laboratory course for nonscience majors before and after one semester of targeted professional development. Each participant was videotaped teaching the same lesson at the beginning of his or her first and second semesters as a TA. These videos were transcribed and coded for ambitious and conservative discursive moves. The findings describe four common profiles for how TAs changed in their practice of eliciting and responding to student ideas after one semester, with one profile eliciting more rigorous student discourse, one profile eliciting less rigorous student discourse, and two profiles fall in the middle of the spectrum. Implications for TA professional development are discussed. The next study was based on the premise that classrooms are complex systems, with a variety of factors influencing the teaching and learning that takes place within the system, including how teachers enact instructional practices. Teachers may translate and enact the same instructional practice differently, which could have important consequences for student learning opportunities. This study examined TA views about the role of the TA and the role of the students in classroom conversations and how these views supported or constrained opportunities for students to engage in scientific discourse. Using qualitative case study methodology, I examined how five TAs enacted whole class conversations in four different lab investigations over two different semesters. Using positioning acts as an analytical lens, the data were analyzed to develop themes describing how the role of the TA and the students was signaled in these five classrooms. The findings illustrated how TAs who positioned students as critical contributors to scientific conversations created opportunities for students to engage in scientific discourse while TAs who self-positioned as the authority on biology knowledge limited opportunities for students to engage in scientific discourse. Implications for classroom practice are discussed. The final study is based on the premise that, due to the calls for reforming undergraduate biology education, biology TAs are increasingly responsible for enacting student-centered instruction. However, TAs must balance coursework, research and teaching responsibilities, and teaching responsibilities are seldom considered opportunities to develop biology expertise needed as a professional scientist. However, some evidence suggests that using ambitious science teaching practices that engage students in the practices and discourses of science actually supports the TA in developing scientific expertise. This research investigated this link by examining how TAs organize biological knowledge before and after teaching a general biology lab curriculum that supported ambitious pedagogy. It also examined the relationship between knowledge organization and instructional practices. To capture changes in TA's knowledge organization, they completed a card-sorting task at the start and end of the semester. To capture instructional practices, TAs were videotaped teaching the same lab at the beginning of two consecutive semesters. The conversations in these teaching episodes were transcribed and TA talk was coded for ambitious discourse moves. TA knowledge organization was significantly more sophisticated after one semester of teaching experience. The sophistication of TA's knowledge organization was also positively related to their use of ambitious discourse moves to elicit and respond to student contributions. This relationship suggests a mutually supportive connection between ambitious teaching practice and disciplinary expertise. Implications for TA professional development are discussed.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Strimaitis_fsu_0071E_13831
Format: Thesis

Title: Amelioration of Anxiety Sensitivity Cognitive Concerns: Exposure to Dissociative Symptoms.
Creator: Norr, Aaron Martin, Schmidt, Norman B., Winegardner, Mark, Li, Wen (Professor of Psychology), Cougle, Jesse R. (Jesse Ray), McNulty, James, Florida State University, College of...
Show moreNorr, Aaron Martin, Schmidt, Norman B., Winegardner, Mark, Li, Wen (Professor of Psychology), Cougle, Jesse R. (Jesse Ray), McNulty, James, Florida State University, College of Arts and Sciences, Department of Psychology
Show less
Abstract/Description: Anxiety sensitivity (AS) has become one of the most well researched risk factors for the development of psychopathology. Research has found that the AS subfactor of cognitive concerns may play an important role in PTSD, depression, and suicide. AS reduction protocols commonly use interoceptive exposure (IE), or exposure to bodily sensations, to reduce AS. However, current IE paradigms (e.g., CO2 inhalation, straw breathing, hyperventilation) primarily induce physical anxiety symptoms (e.g.,...
Show moreAnxiety sensitivity (AS) has become one of the most well researched risk factors for the development of psychopathology. Research has found that the AS subfactor of cognitive concerns may play an important role in PTSD, depression, and suicide. AS reduction protocols commonly use interoceptive exposure (IE), or exposure to bodily sensations, to reduce AS. However, current IE paradigms (e.g., CO2 inhalation, straw breathing, hyperventilation) primarily induce physical anxiety symptoms (e.g., racing heart, dizziness), and thus might not be optimal for the reduction of AS cognitive concerns. Previous work has shown that fear reactivity during the induction of dissociative symptoms is uniquely associated with AS cognitive concerns, and therefore it is possible that repeated exposure to dissociative symptoms will result in habituation and decreased AS cognitive concerns. The current study investigated whether repeated exposure to the induction of dissociative symptoms would reduce AS cognitive concerns, and thus be viable as an IE component of treatments directly targeting AS cognitive concerns. Participants (N = 50) who scored at or above 1 SD above the mean on the ASI-3 cognitive subscale were randomly assigned to repeated exposure to dissociative symptoms through audio-visual stimulation or to a control condition (repeatedly listening to classical music). Results revealed that the classical music control condition resulted in significant decreases in AS cognitive concerns as compared the active dissociation exposure treatment. Unfortunately, these results do not support the viability of this exposure paradigm in the current format as a treatment for elevated AS cognitive concerns. Future directions include increasing the potency of the symptoms induced, increasing the number of exposures, and providing a stronger conceptual framework for the participants prior to undergoing the exposures.
Show less
Date Issued: 2016
Identifier: FSU_SUMMER2017_Norr_fsu_0071E_13096
Format: Thesis

Title: Americans at the Leipzig Conservatory (1843–1918) and Their Impact on American Musical Culture.
Creator: Pepple, Joanna, Seaton, Douglass, Williamson, George S., Eyerly, Sarah, Quinn, Iain, Von Glahn, Denise, Florida State University, College of Music
Abstract/Description: In 1842 Felix Mendelssohn gained approval from the Prussian King Friedrich Wilhelm IV to apply the late Supreme Court Justice’s Heinrich Blümner’s 20,000-Thaler gift to the founding of Germany’s first music education institution dedicated to the higher-level training of musicians. The establishment of the Leipzig Conservatory in 1843 was a milestone in Germany’s history, as this was Germany’s first national conservatory of music, with the goal to train and educate “complete” musicians in both...
Show moreIn 1842 Felix Mendelssohn gained approval from the Prussian King Friedrich Wilhelm IV to apply the late Supreme Court Justice’s Heinrich Blümner’s 20,000-Thaler gift to the founding of Germany’s first music education institution dedicated to the higher-level training of musicians. The establishment of the Leipzig Conservatory in 1843 was a milestone in Germany’s history, as this was Germany’s first national conservatory of music, with the goal to train and educate “complete” musicians in both applied and theoretical studies. Due to its highly-esteemed faculty, the Leipzig Conservatory immediately drew attention from music students not only nationally but also internationally. The Leipzig Conservatory was known for its “conservative” leanings as well as the strong foundation students received in harmony, counterpoint, and voice-leading. The pedagogy of the Leipzig Conservatory not only had a great impact in Germany and the surrounding European countries, but its influence reached across the Atlantic to American musical life. Nineteenth-century Americans held German musical training in high regard. Between 1846 and 1918 over 1,500 Americans traveled across the Atlantic to study with the renowned faculty at the Leipzig Conservatory. Receiving a comprehensive music education and being exposed to world-class visiting soloists such as Clara Schumann and Franz Liszt, these American students returned to the United States as music teachers, administrators, music writers and publishers, and performers, prepared to influence their music culture in numerous ways. These American individuals had a great impact in numerous cities throughout the United States, and several of them had a role in founding America’s first music conservatories: Oberlin Conservatory of Music (1865) and New England Conservatory of Music (1867). By studying the original documents and concert programs at these institutions, one can trace direct pedagogical approaches and institutional policies transferred from Leipzig to Oberlin and Boston. Furthermore, many early faculty members at Oberlin and NEC themselves had studied at the Leipzig Conservatory, bringing Leipziger tastes and pedagogy to American students. While the Leipzig influence impacted Oberlin and NEC greatly, its pedagogy and principles shaped many other aspects of American music life and education throughout multiple cities and regions in the United States, leaving lasting imprints on American music culture, including music education, concert life, music criticism, and composition. The supplementary Excel spreadsheet shows Leipzig Conservatory faculty members and the duration of their tenure at the Conservatory.
Show less
Date Issued: 2018
Identifier: 2019_Spring_Pepple_fsu_0071E_14966_comp
Format: Set of related objects

Title: Amid the Shades.
Creator: Stemke, John Ash, Callender, Clifton, Thomas, André J. (André Jerome), Wingate, Mark, Rogers, Nancy, Jones, Evan Allan, Florida State University, College of Music
Abstract/Description: Since the 19th century, numerous poets, lyricists, and hymnists have penned texts to be sung to the Welsh folk tune “Llwyn Onn,” also known as “The Ash Grove” (12.11.12.11 D). The texts explore many different themes, including the beauty of nature, courtship, limerence, the loss of loved ones, spirituality, and various Christian principles. Metaphorically, the melody shared by these diverse texts can be considered the root or seed that links each text-tree together, establishing a grove of...
Show moreSince the 19th century, numerous poets, lyricists, and hymnists have penned texts to be sung to the Welsh folk tune “Llwyn Onn,” also known as “The Ash Grove” (12.11.12.11 D). The texts explore many different themes, including the beauty of nature, courtship, limerence, the loss of loved ones, spirituality, and various Christian principles. Metaphorically, the melody shared by these diverse texts can be considered the root or seed that links each text-tree together, establishing a grove of perspectives from which the melody itself can be understood. These relationships—where each text-tree is a unique elaboration of an underlying structure— eloquently describe numerous music-compositional practices, such as (and perhaps most noticeably) the theme and variations. Given this resonant symbolism, it is surprising that a vast majority of “Ash Grove” arrangements are not variation sets. The small pool of existing sets primarily contains solos and small chamber works, is stylistically dominated by 18th- and 19th-century idioms, and does not overtly engage with symbolism or extramusical references. In order to develop this dialogue, “Amid the Shades” offers an interpretive cultivation of “The Ash Grove” that demonstrates the broader possibilities of writing variations inspired by specific words found in a musical theme’s associated texts.
Show less
Date Issued: 2019
Identifier: 2019_Spring_Stemke_fsu_0071E_15133
Format: Thesis

Title: Amy Beach's Cabildo: An American Opera.
Creator: Powlison, Nicole M. (Nicole Marie), Seaton, Douglass, Fisher, Douglas L., Eyerly, Sarah, Pelkey, Stanley C., Florida State University, College of Music
Abstract/Description: In June 1932 Amy Beach (1867–1944) arrived at her studio at the MacDowell Colony in Peterborough, New Hampshire, to begin working in one of the few major musical genres that she had yet to attempt in her career: an opera, called Cabildo. The libretto for the chamber opera, given to her by Atlanta author, playwright, and fellow Colonist Nan Bagby Stephens (1883–1946), was based on Stephens's own play with the same title. Cabildo's creators had to negotiate the multifaceted artistic expression...
Show moreIn June 1932 Amy Beach (1867–1944) arrived at her studio at the MacDowell Colony in Peterborough, New Hampshire, to begin working in one of the few major musical genres that she had yet to attempt in her career: an opera, called Cabildo. The libretto for the chamber opera, given to her by Atlanta author, playwright, and fellow Colonist Nan Bagby Stephens (1883–1946), was based on Stephens's own play with the same title. Cabildo's creators had to negotiate the multifaceted artistic expression of American identity through the work's music and plot. The English libretto, rich with local color in sections of dialect, was blended with the sounds of Creole folk tunes and Beach's own art songs to spin a romantic tale of dashing pirates and ghostly lovers, set during the height of the Battle of New Orleans, the final conflict of the War of 1812. Well received at its modest premiere at the University of Georgia in 1945, Beach's only opera remains unpublished and rarely studied or performed. A primary component of this project is the critical edition of Amy Beach's only opera, Cabildo, op. 149, completed in 1932. This edition is prepared to professional publication standards and provides a resource for both scholarly study and performance. The original draft and performance manuscripts of the score from archives at the University of New Hampshire and the University of Missouri-Kansas City provide the source material for the edition. In addition to the critical edition, the dissertation provides a "thick description" of Cabildo that locates the opera in its historical context. Relying on primary source materials such as Beach's diaries and newspaper or magazine articles, this description places the work in the composer's life as a new type of project that comes at the very end of her career, and an opportunity to collaborate with another woman. The description also identifies musical works with contemporary themes or methods to draw comparisons between Cabildo and its contemporaries, placing it in the context of the varied styles of American English-language opera in the 1930s. Cabildo represents one way in which a particular American opera expresses national identity through music and plot. Composers such as Beach attempted to negotiate the aesthetic conundrum that demanded that American art music be of the highest cosmopolitan standards while still having something distinctly "American" about it. This was complicated by the desire of many composers to incorporate American musics that lay outside the European musical heritage, including the simultaneously local and exotic musical materials from African American and Native American cultures. Cabildo exemplifies this complex negotiation of American identity in opera: it is an American opera with a libretto in English, treating a historical topic important to the history of the United States, yet incorporating a mix of Creole folk songs and dialect with music in Beach's own style, all set in the exotic location of New Orleans. By uniting a significant event from national history with a distinctive regional music set in a familiar Romantic style, Beach and Stephens created an opera that is at once intrinsically American and still appealing to a diverse and cosmopolitan audience.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Powlison_fsu_0071E_13860
Format: Thesis

Title: An Examiniation of the Doctor of Music as a Comprehensive Degree.
Creator: Steinman, Olivia, Bish, Deborah, Brewer, Charles E. (Charles Everett), Hodges, Anne R., Holden, Jonathan, Thrasher, Michael, Florida State University, College of Music
Abstract/Description: First adopted in 1951, the Doctor of Music, or Doctor of Musical Arts degree, has been on campuses across America for nearly 70 years now. Since its inception, the main concern surrounding the education of the performer has been how best to develop and serve the artistic needs of the musician while maintaining the level of high scholastic achievement required of the doctorate. Even after decades of existence, the idea of balancing the demands of both the artist and scholar is still relevant,...
Show moreFirst adopted in 1951, the Doctor of Music, or Doctor of Musical Arts degree, has been on campuses across America for nearly 70 years now. Since its inception, the main concern surrounding the education of the performer has been how best to develop and serve the artistic needs of the musician while maintaining the level of high scholastic achievement required of the doctorate. Even after decades of existence, the idea of balancing the demands of both the artist and scholar is still relevant, perhaps even more now than ever before. This treatise considers what constitutes a “comprehensive” terminal degree for performing artists in today’s field. Particular attention will be given to the curricular requirements for obtaining the Doctor of Music or Doctor of Musical Arts degree as they relate to the artist’s life post-academia. The purpose of this research is to gather information about the Doctor of Music degree, concentrating specifically on coursework and curriculum within the context of the development of the arts in America. It aims to examine what constitutes a comprehensive terminal degree for performers, the Doctor of Music or Doctor of Musical Arts degree, and proposes curricular changes to enhance the degree. The author will achieve these objectives through: 1) A brief summary of the evolution of the arts in America, with particular attention given to the period of “cultural-consciousness;” 2) A brief summary of the evolution of the Doctor of Music and Doctor of Musical Arts degrees to provide historical context for the current state of the degree; 3) A consideration of curriculum questions relevant to the doctorate in music and proposals for continued improvement.
Show less
Date Issued: 2019
Identifier: 2019_Spring_Steinman_fsu_0071E_15086
Format: Thesis

Title: An Analysis of FEMA Curricular Outcomes in an Emergency Management and Homeland Security Certificate Program— a Case Study Exploring Instructional Practice.
Creator: Samples, Malaika Catherine, Schrader, Linda B., Brower, Ralph S., Gawlik, Marytza, Akiba, Motoko, Florida State University, College of Education, Department of Educational...
Show moreSamples, Malaika Catherine, Schrader, Linda B., Brower, Ralph S., Gawlik, Marytza, Akiba, Motoko, Florida State University, College of Education, Department of Educational Leadership and Policy Studies
Show less
Abstract/Description: In the United States, the higher education community is charged with the academic education of emergency management professionals. The present rate of natural disasters as well as the evolving threat of terrorist attacks have created a demand for practitioners who are solidly educated in emergency management knowledge, skills, and abilities. These conditions have in turn precipitated the aggressive growth of emergency management and homeland security academic programs in higher education,...
Show moreIn the United States, the higher education community is charged with the academic education of emergency management professionals. The present rate of natural disasters as well as the evolving threat of terrorist attacks have created a demand for practitioners who are solidly educated in emergency management knowledge, skills, and abilities. These conditions have in turn precipitated the aggressive growth of emergency management and homeland security academic programs in higher education, characterized as the most relevant development in the field of emergency management (Darlington, 2008). With the goal of accelerating professionalization of emergency management occupations through higher education, the Federal Emergency Management Agency’s (FEMA) Higher Education Program’s research efforts focused on developing a set of evidence-based competencies for academic programs. These were outlined in FEMA’s Curricular Outcomes (2011). This study explored how these evidence-based competencies are manifested in emergency management and homeland security academic programs and contributes to filling the gap in the literature on the implementation of FEMA’s professional competencies in academic programs, a consequence of legal constraints prohibiting the direct collection of implementation data by federal agencies. The results indicated a wide range of competencies were represented in program coursework with gaps in alignment identified in the five competency areas. The analysis also revealed the exclusion of homeland security topics in Curricular Outcomes (2011) which led to issues of operationalization. Lastly, instructors shared feedback to improve alignment while the researcher discusses key conditions for similar use of a responsive evaluation framework in academic programs.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Samples_fsu_0071E_14432
Format: Thesis

Title: Analysis of High Switching Frequency Quasi-Z-Source Photovoltaic Inverter Using Wide Bandgap Devices.
Creator: Kayiranga, Thierry, Li, Hui, Ordóñez, Juan Carlos, Edrington, Christopher S., Pamidi, Sastry V., Lipo, Thomas A., Florida State University, FAMU-FSU College of Engineering,...
Show moreKayiranga, Thierry, Li, Hui, Ordóñez, Juan Carlos, Edrington, Christopher S., Pamidi, Sastry V., Lipo, Thomas A., Florida State University, FAMU-FSU College of Engineering, Department of Electrical and Computer Engineering
Show less
Abstract/Description: N/A
Date Issued: 2017
Identifier: FSU_SUMMER2017_Kayiranga_fsu_0071E_13964
Format: Thesis

Title: Analysis of Microbial Abundance, Metabolic Potential, and Transcriptional Activity in the Gulf of Mexico "Deadzone" Reveals an Ammonia-Oxidizing Archaeal Hotspot.
Creator: Campbell, Lauren Gillies, Mason, Olivia Underwood, Miller, Thomas E., Chanton, Jeffrey P., Huettel, Markus, Knapp, Angela Noel, Florida State University, College of Arts and...
Show moreCampbell, Lauren Gillies, Mason, Olivia Underwood, Miller, Thomas E., Chanton, Jeffrey P., Huettel, Markus, Knapp, Angela Noel, Florida State University, College of Arts and Sciences, Department of Earth, Ocean and Atmospheric Science
Show less
Abstract/Description: The northern Gulf of Mexico (nGOM) is home to one of the largest eutrophication-driven seasonal hypoxic zones in the world. These hypoxic zones are also known as “dead zones” because dissolved oxygen (DO) concentrations of ≤ 2 mg L-1 are inhospitable to economically valuable fisheries. However, microorganisms flourish in “dead zones” because of their ability to utilize diverse metabolic pathways and/or by carrying out metabolic function at low oxygen concentrations. Decades worth of...
Show moreThe northern Gulf of Mexico (nGOM) is home to one of the largest eutrophication-driven seasonal hypoxic zones in the world. These hypoxic zones are also known as “dead zones” because dissolved oxygen (DO) concentrations of ≤ 2 mg L-1 are inhospitable to economically valuable fisheries. However, microorganisms flourish in “dead zones” because of their ability to utilize diverse metabolic pathways and/or by carrying out metabolic function at low oxygen concentrations. Decades worth of geochemical data has provided fine-scale resolution on nutrient and oxygen dynamics in the nGOM, however little is known about microbial community structure and activity despite the implication that microbial respiration is responsible for forming low DO conditions. To begin to fill this knowledge gap, water column samples collected across the nGOM shelf for two consecutive hypoxic seasons in July 2013 (Y13) and 2014 (Y14) were analyzed using 16S rRNA gene iTag sequencing, quantification of bacterial and thaumarchaeal 16S rRNA genes and archaeal ammonia-monooxygenase (amoA) genes using quantitative polymerase chain reaction (qPCR) assays, as well as shotgun metagenomic and metatranscriptomic sequencing of a subset of Y13 samples. In chapter two of this dissertation, analysis of the microbial community16S rRNA gene sequence data (iTag) in Y13 water column samples showed that ammonia-oxidizing Thaumarchaeota (100% similar to Nitrosopumilus maritimus) abundances were significantly enriched in hypoxic samples and inversely correlated with DO concentrations. In agreement with the iTag data, subsequent analyses of the absolute abundance (qPCR) of Thaumarchaeota 16S rRNA and amoA gene copy numbers revealed these data to be significantly more abundant in hypoxic samples and inversely correlated with DO concentrations. These results of significantly higher Thaumarchaeota abundances and amoA gene copy numbers in hypoxic samples were confirmed with analyses of Y14 data, as shown in chapter three. For both Y13 and Y14 samples, further analysis of thaumarchaeal microdiversity using oligotyping of iTag sequence data showed single nucleotide variation among Nitrosopumilus 16S rRNA gene sequences. One oligotype was significantly more abundant in hypoxic compared to oxic samples and significantly correlated with low DO, revealing a low DO adapted Nitrosopumilus oligotype in the nGOM. To better understand the ecological significance of the high thaumarchaeal abundances in the hypoxic zone shown in chapters two and three, shotgun metagenomic and metatranscriptomic sequencing was carried out on a subset of samples from Y13. Annotation of unassembled metatranscriptomic reads revealed that functional genes involved in nitrification and ammonia assimilation were some of the most abundant transcripts in both hypoxic and oxic samples, with urease enzymes being significantly more abundant in hypoxic samples. Chapter four described the physiological and metabolic activity of two novel Thaumarchaeota metagenome assembled genomes (MAGs) (estimated 79% and 96% complete). The 16S rRNA gene sequence of one MAG had a 98% identity with Nitrosopumilus maritimus SCM1 and was 100% similar to the dominant Thaumarchaeota (OTU4369009) in the Y13 nGOM. Bioinformatic analyses of these MAGs revealed that one contained transcripts coding for urea utilization, consistent with the analysis of unassembled metatranscriptomic sequences. Both MAGs recruited more metatranscriptomic reads derived from hypoxic samples (≤ 2 mg L-1) compared to oxic samples, revealing an active Thaumarchaeota population in the hypoxic zone where archaeal ammonia oxidation may be influenced by local changes in DO concentrations. Collectively, analyses of the datasets in this dissertation that include data from iTag sequencing, qPCR assays, and meta-omics sequencing, found that seasonal hypoxic conditions influenced Thaumarchaeota abundance, activity and diversity, with the annual nGOM “dead zone” emerging as a niche for low DO-adapted, cosmopolitan ammonia-oxidizing archaeal (AOA). Overall, the findings in this dissertation provided significant new insights into the ecology and biogeochemical contributions of marine Archaea, particularly in regards to the nitrogen cycle during a eutrophication-driven hypoxic event.
Show less
Date Issued: 2019
Identifier: 2019_Spring_Campbell_fsu_0071E_15095
Format: Thesis

Title: Analysis of Non-Thermal Plasma Discharge Contacting Liquid Water Using Plasma Diagnostics and Computer Simulations.
Creator: Wang, Huihui, Locke, Bruce R., Alabugin, Igor V., Chella, Ravindran, Alamo, Rufina G., Florida State University, College of Engineering, Department of Chemical and Biomedical...
Show moreWang, Huihui, Locke, Bruce R., Alabugin, Igor V., Chella, Ravindran, Alamo, Rufina G., Florida State University, College of Engineering, Department of Chemical and Biomedical Engineering
Show less
Abstract/Description: Non-thermal plasma technology, which can be used as an advanced oxidation process (AOP) for water treatment, has gained significant attention recently. A plasma discharge contacting liquid water generates strong oxidants, such as ·OH and H2O2 and, in the presence of O2, ozone (O3), which are capable of degrading or completely mineralizing many organic pollutants in waste water. The UV irradiation generated during the plasma discharge can enhance the degradation of organic compounds and kill...
Show moreNon-thermal plasma technology, which can be used as an advanced oxidation process (AOP) for water treatment, has gained significant attention recently. A plasma discharge contacting liquid water generates strong oxidants, such as ·OH and H2O2 and, in the presence of O2, ozone (O3), which are capable of degrading or completely mineralizing many organic pollutants in waste water. The UV irradiation generated during the plasma discharge can enhance the degradation of organic compounds and kill bacteria. Compared with other water treatment methods, the non-thermal plasma technology removes the pollutants completely and rapidly, and it does not introduce any new hazardous materials into the system. However, the high energy cost of non-thermal plasma technology prevents it from being commercialized. Therefore, many studies have been conducted to improve the energy efficiency of the non-thermal plasma technology. This dissertation focused on investigating the influence of operating conditions and the plasma properties on the production of H2O2 during the plasma discharge with liquid water. H2O2 is one of the most important products which indirectly indicates the concentration of ·OH generated by the plasma system. This work focused on the mechanism of H2O2 formation and analyzed the influence of plasma properties including the electron density and gas temperature on H2O2 production. The influence of operating conditions such as discharge power and carrier gases on plasma properties was also investigated. The results provide a general view of H2O2 formation in the plasma-liquid system and provide guidelines for modifying the plasma system to achieve higher efficiency. Another problem using non-thermal plasma to treat industrial waste water is that the high conductivity of waste water causes energy wastage since the current starts to flow through the liquid which generates heat. In addition, some plasma systems with low liquid conductivity tolerance cannot generate a discharge when liquid conductivity is high. Therefore, another goal of this work is to study the influence of liquid conductivity on plasma discharge with water and improve the liquid conductivity tolerance of the plasma system.
Show less
Date Issued: 2018
Identifier: 2018_Fall_Wang_fsu_0071E_14831
Format: Thesis

Title: Analyzing Bone, Muscle and Adipose Tissue Biomarkers to Identify Osteosarcopenic Obesity Syndrome in Older Women.
Creator: Jafarinasabian, Pegah, Ilich-Ernst, Jasminka Z., Contreras, Robert J. (Robert John), McGee, Daniel, Spicer, Maria T., Florida State University, College of Human Sciences,...
Show moreJafarinasabian, Pegah, Ilich-Ernst, Jasminka Z., Contreras, Robert J. (Robert John), McGee, Daniel, Spicer, Maria T., Florida State University, College of Human Sciences, Department of Nutrition, Food and Exercise Sciences
Show less
Abstract/Description: Osteosarcopenic obesity (OSO) is a recently identified geriatric syndrome characterized by simultaneous presence of osteopenia/osteoporosis, sarcopenia, and increased adiposity either as overt overweight or fat infiltration into bone and muscle. The diagnostic criteria for OSO are just being established, but there are no data on biomarkers that might characterize this syndrome. Our objective was to examine possible biomarkers associated with OSO syndrome, including serum sclerostin (as a...
Show moreOsteosarcopenic obesity (OSO) is a recently identified geriatric syndrome characterized by simultaneous presence of osteopenia/osteoporosis, sarcopenia, and increased adiposity either as overt overweight or fat infiltration into bone and muscle. The diagnostic criteria for OSO are just being established, but there are no data on biomarkers that might characterize this syndrome. Our objective was to examine possible biomarkers associated with OSO syndrome, including serum sclerostin (as a hinder of bone formation), skeletal muscle-specific troponin T (sTnT) (as an indicator of muscle turnover/damage) and serum leptin and adiponectin (measurement for fat metabolism). Additionally, we analyzed C-reactive protein (CRP) and serum lipids to evaluate the level of inflammation and lipid profile, respectively. A total of n=59 healthy Caucasian women ≥65 years were classified into 4 groups based on their bone and body composition profile identified by Dual-energy X-ray Absorptiometry (DXA) measurements: 1) Osteopenic obese (N=35); 2) Obese-only (N=10); 3) OSO (N=10); 4) Osteopenic/sarcopenic non-obese (N=4). Osteopenia/osteoporosis was determined by T-score of L1-L4 and/or femoral neck≤-1. Appendicular lean mass adjusted for both height and fat mass. Appendicular lean mass residual value of ≤ -1.43 was used as the cut-off point for diagnosing sarcopenia. Obesity included women with body fat percentage ≥32%. Serum samples were analyzed using ELISA kits for sclerostin, sTnT, leptin and adiponectin. CRP and Lipid profile were analyzed at Tallahassee Memorial Hospital using the latex amino assay and lipoprotein assay, respectively. In addition, diet and habitual physical activity were evaluated by 3-day dietary record and the Allied Dunbar National Fitness Survey, respectively. Data were evaluated by Pearson's correlations and ANOVA followed by Tukey's tests with p≤0.05. Serum sclerostin was significantly higher in OSO and osteopenic obese group in comparison to the obese-only group. The sTnT concentrations were significantly higher in OSO group in comparison to osteopenic obese and obese-only group. Sclerostin was negatively correlated with bone mineral density/content (BMD/BMC) of all skeletal sites, and the relationship was statistically significant with femoral neck BMD/BMC. Moreover, there was a significant positive correlation between serum sclerostin and sTnT, indicating their simultaneous mediation in bone and muscle loss. The highest concentrations of serum leptin were observed among OSO group. Women in OSO group had significantly greater leptin concentration than osteopenic/sarcopenic non-obese group. Serum leptin was significantly negatively correlated with left femoral neck BMD and T-score, total BMC and left femur BMC after adjusting for weight or BMI. Statistically significant negative correlation of serum adiponectin with body fat percentage was noted, as well as with the BMD and T-scores of several skeletal sites, including total femur and femoral neck. The osteopenic/sarcopenic non-obese group had the highest level of adiponectin (µg/mL) in comparison to other groups. These results confirm the negative relationship between adiposity and serum adiponectin. Significant negative correlation between serum leptin and BMD in groups with increased body fat may indicate its mediating role between bone and body adiposity. The CRP concentrations for all participants ranged from 0.01 to 1.43 mg/dL. None of the CRP concentrations were above the high threshold (3.0 mg/dL). Although the highest concentrations of CRP were observed among OSO group, there was no significant difference between groups. The highest concentrations of cholesterol and low density lipoprotein (LDL) were observed in the OSO group. Moreover, the highest concentrations of triglyceride were observed among the osteopenic obese group vs lowest for osteopenic/sarcopenic non-obese group. Although, the lowest amount of energy intake was observed among OSO group, there was no significant difference among groups. Moreover, there was no significant difference in amount of vitamin D and calcium intake among the groups. The lowest amount of protein intake was observed in the OSO group; however, there was no significant difference among groups. There was a significant positive correlation between total calcium intake and lean/fat ratio. Moreover, there was a significant negative correlation between amount of protein intake and waist/hip ratio. In conclusion, women identified with OSO syndrome have presented with the poorest outcomes for each variable. The combination of high concentration of sclerostin, sTnT, leptin and low adiponectin can be used to better identify the metabolic profile of OSO syndrome and possibly apply as measurements for its diagnostic criteria.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_JafariNasabian_fsu_0071E_13697
Format: Thesis

Title: Anchoring Power through Identity in Online Communication: The Trayvon Martin and Daniela Pelaez Cases.
Creator: Mauney, Heather T., Rohlinger, Deana A., Schmertmann, Carl P., Sanyal, Paromita, Ueno, Koji, Florida State University, College of Social Sciences and Public Policy, Department...
Show moreMauney, Heather T., Rohlinger, Deana A., Schmertmann, Carl P., Sanyal, Paromita, Ueno, Koji, Florida State University, College of Social Sciences and Public Policy, Department of Sociology
Show less
Abstract/Description: This dissertation research uses the analysis of internet-based comments on two major news stories to study the role of identity in anchoring power during discursive participation. For this purpose, identity includes the categorical group memberships that people may place themselves or others into, such as gender, race, or occupation. Identity, as an anchor, is used as a resource for the purpose of linking one’s wishes to power, with power being the amount of preferential treatment given to...
Show moreThis dissertation research uses the analysis of internet-based comments on two major news stories to study the role of identity in anchoring power during discursive participation. For this purpose, identity includes the categorical group memberships that people may place themselves or others into, such as gender, race, or occupation. Identity, as an anchor, is used as a resource for the purpose of linking one’s wishes to power, with power being the amount of preferential treatment given to any particular identity in determining the course of events or proper direction of discussion. The Daniela Pelaez case and Trayvon Martin case were each selected for making national headlines at approximately the same time, both occurring in the same state, and both being in reference life altering circumstances for minority teenagers, yet representing different outcomes. A content analysis of news comment board posts for the Daniela Pelaez and Trayvon Martin cases has been performed to ascertain the use of identity in comments and prevalence of particular identities, the use of identity to anchor power, the acknowledgement of identities by readers, and the conditions under which identities were used. One article for each case was selected from the same national news source, with an analysis completed for the first 1,000 comments on each article. Identity used as an anchor to power is found to exist, but only has a significant interaction with presentation of an argument for the Martin case. This indicates that the association between anchoring identity and presenting an argument can vary by news story. Identity as an anchor itself varies with race, and is dependent on how race relates to the news story. It is also found that anchoring is more dependent on authors’ expectations of what others will consider important than it is effective on readers’ actual recordable reactions.
Show less
Date Issued: 2017
Identifier: FSU_FALL2017_Mauney_fsu_0071E_13216
Format: Thesis

Title: The Anglo-Saxon Chronicle in the Seventeenth Century: Transmission, Translation, Reception.
Creator: Day, Patrick V., Johnson, David F. (David Frame), Brewer, Charles E. (Charles Everett), Coldiron, A. E. B. (Anne Elizabeth Banks), Boehrer, Bruce Thomas, Florida State...
Show moreDay, Patrick V., Johnson, David F. (David Frame), Brewer, Charles E. (Charles Everett), Coldiron, A. E. B. (Anne Elizabeth Banks), Boehrer, Bruce Thomas, Florida State University, College of Arts and Sciences, Department of English
Show less
Abstract/Description: The sixteenth and seventeenth centuries saw the rise of an intense interest in Anglo-Saxon history and artifacts that accompanied the transcription, translation, and dissemintation of the contents of England's monastic libraries following the Reformation begun in the 1530s. The tide of religious reform turned to more secular, legal concerns under the two early Stuart kings, and the pre-Norman past was used to simultaneously legitimize and criticize early-seventeenth-century monarchy and its...
Show moreThe sixteenth and seventeenth centuries saw the rise of an intense interest in Anglo-Saxon history and artifacts that accompanied the transcription, translation, and dissemintation of the contents of England's monastic libraries following the Reformation begun in the 1530s. The tide of religious reform turned to more secular, legal concerns under the two early Stuart kings, and the pre-Norman past was used to simultaneously legitimize and criticize early-seventeenth-century monarchy and its ancient privileges by free monarchists and constitutionalists, respectively. Much of the modern criticism surrounding the constitutional crises of the reigns of James VI and I and Charles I as it relates to the Anglo-Saxon past focuses on Bede and the Benedictine Reformers of the tenth century. The present study, however, considers an often-cited text typically relegated to the periphery: The Anglo-Saxon Chronicle. The Chronicle makes its debut in print under the direction of Abraham Wheelock and the Cambridge University Press in 1643. The annalistic history appears alongside Bede's Historia Ecclesisatica, and, in the 1644 reprint and augmentation, the laws from Ine to Alfred and the later Anglo-Norman kings. Wheelock's editio princeps of the Anglo-Saxon Chronicle appears at the height of the First English Civil War in 1643, and it is often treated by modern critics as an appendix to the Old English Historia to which it is attached. This dissertation argues that the Chronicle is not peripheral, and that it participates in a larger royalist campaign to establish the West Saxons as the institutional forbears of the first two Stuart kings. The opening chapters establish Wheelock and his literary circle as participants in the ongoing constitutional debate that culminated in the Personal Rule of Charles in 1629 and the opening years of the Civil Wars a decade later. After the political alleigances of those who surround the production of the 1643 Chronicle have been thoroughly considered, the focus of this study then turns to the text of the Chronicle itself. Wheelock inserts himself into the Chronicle's narrative by means of excision, substitution, and inconsistent translation so that the Chronicle may more easily conform to early modern perceptions of kingship. Specifically, his intervention into and manipulation of the genealogical West Saxon Regnal Table and his interpretation of the advisory body of the Anglo-Saxons known as the witan provide a lens through which to read the medieval Chronicle as a polticial document suitable for seventeenth-century purposes. Lastly, this dissertation traces the influences of the 1643 edition upon the only other Chronicle printed in that century—the 1692 version compiled and edited by Bishop Edmund Gibson. This final chapter argues that Gibson, like Wheelock, uses the Chronicle for political, and in the latter antiquary's case, nationalistic ends.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Day_fsu_0071E_13770
Format: Thesis

Title: An Annotated Analysis of the Choral Settings of Sara Teasdale's Literary 'Songs'.
Creator: Ridgley, Hillary J., Thomas, Andre J. (Andre Jerome), Stebleton, Michelle, Bowers, Judy K. (Judy Kay), Kelly, Steven N., Florida State University, College of Music
Abstract/Description: The purpose of this study is to provide conductors with a comprehensive annotated rubric of choral works based on the poetry of Sara Teasdale. Each Teasdale poem, printed in its original form, is presented with accompanying historically relevant information and a brief analysis. Choral settings based on the poems are annotated by following a rubric that includes: title, poem, composer/arranger, publisher, voicing, instrumentation, meter, key signature, text, tonal concepts, and rhythmic...
Show moreThe purpose of this study is to provide conductors with a comprehensive annotated rubric of choral works based on the poetry of Sara Teasdale. Each Teasdale poem, printed in its original form, is presented with accompanying historically relevant information and a brief analysis. Choral settings based on the poems are annotated by following a rubric that includes: title, poem, composer/arranger, publisher, voicing, instrumentation, meter, key signature, text, tonal concepts, and rhythmic concepts. The tonal and rhythmic concepts indicate patterns singers should be able to independently read or may need to rehearse in advance of reading. The purpose of the design is to permit conductors to quickly gather information about the poetry and the music in order to expedite literature selection. The in-depth examination also allows conductors to program a broader range of settings of Teasdale poetry.
Show less
Date Issued: 2017
Identifier: FSU_2017SP_Ridgley_fsu_0071E_13719
Format: Thesis

Title: An Annotated Catalogue and Guide to the Piano Solo Repertoire of Contemporary Asian Women Composers from Mainland China, Hong Kong, and Taiwan.
Creator: Li, Chun (Paige), Gainsford, Read, Clendinning, Jane Piper, Dumlavwalla, Diana Teresa, Kalhous, David, Florida State University, College of Music
Abstract/Description: This treatise provides an annotated catalogue of solo piano repertoire by currently living women composers who were born in the second half of the twentieth century and are from mainland China, Hong Kong, and Taiwan. It serves as a practical reference source and guide to this literature. The first chapter discusses the current situation for Asian women composers and the significance of this study. The second chapter is a catalogue of the composers and their solo piano works that I collected...
Show moreThis treatise provides an annotated catalogue of solo piano repertoire by currently living women composers who were born in the second half of the twentieth century and are from mainland China, Hong Kong, and Taiwan. It serves as a practical reference source and guide to this literature. The first chapter discusses the current situation for Asian women composers and the significance of this study. The second chapter is a catalogue of the composers and their solo piano works that I collected for this study. Biographical information and descriptive summaries of the pieces allow performers, teachers, and scholars to easily survey this particular repertoire, choose pieces for study and performance, and discover new works. The final chapter provides critical commentary and offers my observations on sources of inspiration and elements of musical style in the collected repertoire. The appendix includes a table of composers and works for readers to locate pieces quickly based on the origin of the composer or the level of difficulty and duration of the piece. This project contributes to a growing body of recent scholarship on new music by Asian composers. It aims to introduce more of this repertoire into the general piano literature so that the music of Asian women composers can be discussed and performed more regularly.
Show less
Date Issued: 2019
Identifier: 2019_Spring_Li_fsu_0071E_15111
Format: Thesis

Title: Anti-Establishment Political Parties: Conception, Measurement, and Consequences.
Creator: Cornacchione, Teresa Lee, Ehrlich, Sean D., Grant, Jonathan A., Weissert, Carol S., Gomez, Brad T., Beazer, Quintin H., Florida State University, College of Social Sciences and...
Show moreCornacchione, Teresa Lee, Ehrlich, Sean D., Grant, Jonathan A., Weissert, Carol S., Gomez, Brad T., Beazer, Quintin H., Florida State University, College of Social Sciences and Public Policy, Department of Political Science
Show less
Abstract/Description: The incredible rise of so-called "anti-establishment" parties in Europe has left scholars scrambling to define and classify the movement. Much scholarly attention has been paid to radical right wing parties, and the sources of their electoral support. While important and intriguing, the current literature has yet to develop a cohesive definition of the anti-establishment, and has too heavily used terms such as "populist," "anti-establishment," and "radical right-wing" interchangeably. Further...
Show moreThe incredible rise of so-called "anti-establishment" parties in Europe has left scholars scrambling to define and classify the movement. Much scholarly attention has been paid to radical right wing parties, and the sources of their electoral support. While important and intriguing, the current literature has yet to develop a cohesive definition of the anti-establishment, and has too heavily used terms such as "populist," "anti-establishment," and "radical right-wing" interchangeably. Further, extant research has based theories of these parties' electoral support largely with the radical right-wing in mind, potentially ignoring theories that could explain support for these parties from the left, right, and center of the political spectrum. Finally, current research has not substantially explored how these parties, traditionally excluded from policy-making, behave once they are seated in parliaments. This dissertation aims to remedy these three shortcomings. First, I develop a conceptual definition and measurement scheme that encapsulates both ideological positioning and anti-establishment sentiment. Then, I explore how political trust in influences electoral support for anti-establishment parties positioned at all areas of the classic left-right spectrum. Finally, I analyze their parliamentary behavior, assessing their level of activity and their preferred policy domains. My findings underscore the importance of conceiving anti-establishment parties as existing along a unique dimension, separate from ideology, whose electoral viability can be explained via a unified theory, and who behave uniquely in parliament.
Show less
Date Issued: 2018
Identifier: 2018_Su_Cornacchione_fsu_0071E_14698
Format: Thesis

Title: Antiprejudice among White Americans and the Proactive Fight to End Discrimination Toward Black Americans.
Creator: Lacosse-Brannon, Jennifer, Plant, Ashby, Hightower, Patricia Y., Maner, Jon K., Conway, Paul, Kelley, Colleen M., Florida State University, College of Arts and Sciences,...
Show moreLacosse-Brannon, Jennifer, Plant, Ashby, Hightower, Patricia Y., Maner, Jon K., Conway, Paul, Kelley, Colleen M., Florida State University, College of Arts and Sciences, Department of Psychology
Show less
Abstract/Description: Despite social pressure for White Americans to be nonprejudiced, Black Americans still regularly experience discrimination. We argue that bias persists because although many White Americans espouse nonprejudiced beliefs, far fewer actively work to combat discrimination. Previous research on a newly developed scale of antiprejudice, or the belief that White people should proactively fight discrimination, indicates that higher levels of antiprejudice are associated increased proactive support...
Show moreDespite social pressure for White Americans to be nonprejudiced, Black Americans still regularly experience discrimination. We argue that bias persists because although many White Americans espouse nonprejudiced beliefs, far fewer actively work to combat discrimination. Previous research on a newly developed scale of antiprejudice, or the belief that White people should proactively fight discrimination, indicates that higher levels of antiprejudice are associated increased proactive support among White people for multiple actions that would help put an end to discrimination. Drawing from research on prescriptive moral convictions (i.e., what people should do), we predicted that teaching White Americans four reasons why White people should be proactive in the fight against systemic racism would increase perceptions that White involvement is necessary in order for real change to occur and increase antiprejudiced beliefs. Results of a pilot study supported our predictions. Moreover, in a second study we replicated our results and extended them by demonstrating that our intervention not only increased perceptions about the necessity of White involvement and antiprejudice, it was also associated with a greater likelihood of volunteering for an equal rights organization.
Show less
Date Issued: 2018
Identifier: 2018_Sp_LaCosse_fsu_0071E_14406
Format: Thesis

Title: Application and Analysis of the Extended Lawrence Teleoperation Architecture to Power Hardware-in-the-Loop Simulation.
Creator: Langston, James, Edrington, Christopher S., Vanli, Omer Arda, Steurer, Michael, Roberts, Rodney G., Faruque, Md Omar, Florida State University, College of Engineering,...
Show moreLangston, James, Edrington, Christopher S., Vanli, Omer Arda, Steurer, Michael, Roberts, Rodney G., Faruque, Md Omar, Florida State University, College of Engineering, Department of Electrical and Computer Engineering
Show less
Abstract/Description: Power hardware-in-the-loop (PHIL) simulation is a technique whereby actual power hardware is interfaced to a virtual surrounding system through PHIL interfaces making use of power amplifiers and/or actuators. PHIL simulation is often an attractive approach for early integration testing of devices, allowing testing with unrealized systems with substantial flexibility. However, while PHIL simulation offers a number of potential benefits, there are also a number of associated challenges and...
Show morePower hardware-in-the-loop (PHIL) simulation is a technique whereby actual power hardware is interfaced to a virtual surrounding system through PHIL interfaces making use of power amplifiers and/or actuators. PHIL simulation is often an attractive approach for early integration testing of devices, allowing testing with unrealized systems with substantial flexibility. However, while PHIL simulation offers a number of potential benefits, there are also a number of associated challenges and limitations stemming from the non-ideal aspects of the PHIL interface. These can affect the accuracy of the experiments and, in some cases, lead to instabilities. Consequently, accuracy, stability, and sensitivity to disturbances are some of the most important considerations in the analysis and design of PHIL simulation experiments, and the development of PHIL interface algorithms (IA) and augmentations for improvements in these areas is the subject of active research. Another area of research sharing some common attributes with PHIL simulation is the field of robotic bilateral teleoperation systems. While there are some distinctions and differences in characteristics between the two fields, much of the literature is also focused on the development of algorithms and techniques for coupling objects. A number of disparate algorithms and augmentations have also been proposed in the teleoperation literature, some of which are fundamentally very similar to those applied in PHIL simulation. While some of the teleoperation methods may have limited applicability in PHIL experiments, others have substantial relevance and may lend themselves to improvements in the PHIL application area. This work focuses on the application and analysis of a teleoperation framework in the context of PHIL simulation. The extended Lawrence Architecture (ELA) is a framework unifying and describing a large set of teleoperation interfacing algorithms. This work focuses on the application and analysis of the ELA to PHIL simulation. This includes the expression of existing PHIL IAs in the context of the ELA, derivation of relevant transfer functions and metrics for assessment of performance, the exploration of the implications of the transparency requirements, and the exploration of new IAs supported by the ELA which may be well suited to the particular characteristics of PHIL simulation.
Show less
Date Issued: 2018
Identifier: 2018_Sp_Langston_fsu_0071E_14321
Format: Thesis

Title: Application of FT-ICR Mass Spectrometry in Hydrogen Deuterium Exchange and Lipidomics.
Creator: Liu, Peilu, Marshall, Alan G., Tang, Hengli, Dorsey, John G., Miller, Brian G, Florida State University, College of Arts and Sciences, Department of Chemistry and Biochemistry
Abstract/Description: High resolution mass spectrometry, especially Fourier transform ion cyclotron resonance mass spectrometry (FT ICR MS) is a widely practiced technique of choice in proteomics and lipidomics due to its high sensitivity, reproducibility and wide dynamic range. FT-ICR MS enables quick assignments of hundreds of peptides and lipids with extreme complexity. Chapter 1 introduces the fundamental of FT ICR phenomena for mass measurement and basic theories of LC-MS based hydrogen deuterium exchange ...
Show moreHigh resolution mass spectrometry, especially Fourier transform ion cyclotron resonance mass spectrometry (FT ICR MS) is a widely practiced technique of choice in proteomics and lipidomics due to its high sensitivity, reproducibility and wide dynamic range. FT-ICR MS enables quick assignments of hundreds of peptides and lipids with extreme complexity. Chapter 1 introduces the fundamental of FT ICR phenomena for mass measurement and basic theories of LC-MS based hydrogen deuterium exchange (HDX) technique for high order structure studies. Chapter 1 also introduces the application of mass spectrometry in lipidomics including lipid classification and MS analysis. Chapter 2 described the characterization of the binding interfaces in R2TP complex by hydrogen/deuterium exchange mass spectrometry. The two closely related AAA+ family ATPase Rvb1 and Rvb2 form a tight functional complex with two Hsp90 interactors: Pih1p and Tah1p. The R2TP complex involves in multiple biological processes including apoptosis, PIKK signaling, and RNA polymerase II assembly, and snoRNP biogenesis. The current lack of structural information on R2TP complex prevents a mechanistic understanding of many biological processes. By use of solution-phase HDX MS, we probed the contact surfaces on Pih1p-Tah1p upon Rvb1/2p binding. The present results demonstrate that Pih1p-Tah1p interacts with Rvb1/2p through N-terminal and IDR2 regions of Pih1p. Significantly, HDX also detected a rearrangement of residues 38–60 of Pih1p and 1–44 of Tah1p upon formation of the R2TP complex. Chapter 3 depicts the study of conformations of activated, disease-associated glucokinase variants by a comparative hydrogen/deuterium exchange mass spectrometry. Human glucokinase (GCK) acts as the body’s primary glucose sensor and plays a critical role in glucose homeostatic maintenance. Previous biochemical and biophysical studies suggest the existence of two activated variants. HDX results demonstrate that a disordered active site, which is folds upon binding of glucose, is protected from exchange in α helix variant. Additionally, α helix variant displays an increased level of exchange near enzyme’s hinge region. In contrast, β hairpin variant does not show substantial difference in global or local exchange relative to that of wild type GCK. The work elucidates the structural and dynamics origins of GCK’s unique kinetic cooperativity. Chapter 4 investigated the structure of an antibody with ‘Knob-into-hole’ mutations by HDX MS. Bispecific antibodies (BsAbs) have flourished in the biopharmaceutical industry for targeting two distinct antigens simultaneously. ‘Knob-into-hole’ approach is a way to manufacture bispecific antibodies. The applicability and advantage of ‘Knob-into-hole’ engineered bispecific antibody is vast. However, concerns about the conformational change and immunogenicity risks posed by the new approach has have been raised. To better understand the conformations and dynamics impacted by the ‘knob’ and ‘hole’ mutations, HDX MS is used to characterize peptide-level conformational changes of a ‘Knob-into-hole’ engineered antibody. The study shows that there is no significant structural alternation induced by ‘Knob-into-hole’ framework. In Chapter 5, the applicability of resolving HDX-derived isotopic fine structure by ultrahigh resolving power FT ICR mass spectrometry was discussed. In an HDX experiment, labeling protein with deuterium causes the deuterium incorporation, resulting in distributions of various combinations of 13C1H and 12C2H (Δm = 2.9 mDa). The isotopic fine structure typically cannot be used to evaluate deuteration level due to the difficulty of .resolving fine structures for all proteolytic peptides spanning wide mass range from HDX experiments. The introduction of hexapolar cell triples the observed resolving power on 14.5 tesla FT-ICR mass spectrometer, thus we successfully extend the capability of resolving isotopic fine structure to most of identified peptides. Additionally, a new method of analysis of isotopic fine structure-resolved HDX data was proposed to determine degrees of deuterium incorporation. Another research area I have worked on is characterization of polar lipids by LC coupled with FT-ICR mass spectrometry. Algae lipids contain long-chain saturated and polyunsaturated fatty acids. The lipids may be transesterified to generate biodiesel fuel. In Chapter 6, I compared polar lipid compositions for two microalgae, Nannochloropsis oculata and Haematococcus pluvialis, that are prospective lipid-rich feedstock candidates for an emerging biodiesel industry. Online nano liquid chromatography coupled with negative electrospray ionization 14.5 T Fourier transform ion cyclotron resonance mass spectrometry ((−) ESI FT-ICR MS) with newly modified ion optics provides ultrahigh mass accuracy and resolving power to identify hundreds of unique elemental compositions. Assignments are confirmed by isotopic fine structure for a polar lipid extract. Collision-induced-dissociation (CID) MS/MS provides additional structural information. H. pluvialis exhibits more highly polyunsaturated lipids than does N. oculata.
Show less
Date Issued: 2018
Identifier: 2018_Su_Liu_fsu_0071E_14651
Format: Thesis

Theses and Dissertations (1252)	+ -
Digitized Theses and Dissertations (1)	+ -

Music (112)	+ -
Study and teaching (77)	+ -
History (57)	+ -
Statistics (56)	+ -
Mathematics (49)	+ -

Psychology (46)	+ -
Chemistry (45)	+ -
Education (42)	+ -
Education, Higher (40)	+ -
Materials science (37)	+ -
Biology (32)	+ -
Educational psychology (31)	+ -
Computer science (29)	+ -
Criminology (29)	+ -
Electrical engineering (29)	+ -
Instruction and study (29)	+ -
Sociology (29)	+ -
Applied mathematics (27)	+ -
Neurosciences (26)	+ -
Physics (26)	+ -
Art (24)	+ -
Clinical psychology (23)	+ -
Condensed matter (23)	+ -
Economics (22)	+ -
Molecular biology (22)	+ -
Educational leadership (21)	+ -
Engineering (21)	+ -
Education and state (20)	+ -
Management (19)	+ -
Biochemistry (18)	+ -

United States (18)	+ -
Europe (7)	+ -
Latin America (5)	+ -
Middle East (3)	+ -
Africa, North (1)	+ -

Caribbean Area (1)	+ -
Russia (1)	+ -
South Asia (1)	+ -

Search In

Pages

Pages

Sort Results By:

Narrow results by:

Collection

Topical Subject

Geographic Subject

Genre

Type of Resource

Language

Creator

Format

Owner