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- Title
- A Search for Quantum Black Hole Production in Proton-Proton Collisions at sqrt(s) = 13 TeV Requiring Two High Energy Photons.
- Creator
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Tolbert, Steven William
- Abstract/Description
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This thesis searches for new physics at CMS in the form of microscopic black hole production at a minimum threshold of formation of 2.0 TeV. This analysis will examine data from Run II of the LHC with center-of-mass energy sqrt(s)=13 TeV, and an integrated luminosity of 12.9 +- 0.8 fb^-1. This is the first analysis to search for microscopic black hole production with the requirement of two high pT photons in the final state. After modeling backgrounds through low jet multiplicity control...
Show moreThis thesis searches for new physics at CMS in the form of microscopic black hole production at a minimum threshold of formation of 2.0 TeV. This analysis will examine data from Run II of the LHC with center-of-mass energy sqrt(s)=13 TeV, and an integrated luminosity of 12.9 +- 0.8 fb^-1. This is the first analysis to search for microscopic black hole production with the requirement of two high pT photons in the final state. After modeling backgrounds through low jet multiplicity control regions, no statistically significant excess is found in the signal region.
Show less - Date Issued
- 4/28/2017
- Identifier
- FSU_libsubv1_scholarship_submission_1493408195
- Format
- Thesis
- Title
- Fractionalization and Its Impact on Income Inequality in Panama.
- Creator
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Flores, Aldair San
- Abstract/Description
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Honors Thesis that uses observations from numerical data and relates income inequality to the different types of fractionalization. A case study on the Republic of Panama is presented and leads us to implications of the entire globe.
- Date Issued
- 2017-04-25
- Identifier
- FSU_libsubv1_scholarship_submission_1493165006
- Format
- Thesis
- Title
- Exploring Pupil Diameter as a Lie Detection Method.
- Creator
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Gonzales, Violeta
- Abstract/Description
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Traditional methods of lie detection (e.g., polygraph, GSR, heart rate) have often led to more controversy than successful detection. Leading the charge into the future of lie detection technology is eye-tracking, a young and innovative field that represents a new and promising strategy for addressing deception by measuring eye movements, pupil size, and attentional allocation. This experiment examined the body’s physiological reactions to engaging in deception by using pupillometry. We...
Show moreTraditional methods of lie detection (e.g., polygraph, GSR, heart rate) have often led to more controversy than successful detection. Leading the charge into the future of lie detection technology is eye-tracking, a young and innovative field that represents a new and promising strategy for addressing deception by measuring eye movements, pupil size, and attentional allocation. This experiment examined the body’s physiological reactions to engaging in deception by using pupillometry. We examined and compared these physiological responses between two conditions: being told to tell a lie or the truth. We also examined the effects of the lie being told spontaneously compared to knowing in advance that a lie would be produced, as well as the effect of practice. With the use of a rapid serial visual presentation (RSVP) paradigm, participants looked at a continuous stream of visual images (i.e., letters) and were asked to report (or lie about) the letter of a unique color (black letter among gray letters). Participants were prompted at the end of the trial to either report the letter correctly, or to lie about it. On some trials, this prompt occurred in advance of the letter stream so participants could prepare to lie, and for other trials it occurred at the end and participants had little opportunity to prepare their lie. It was predicted that lies would be characterized by an increase in pupil size, but this prediction received limited support. With regard to reaction time, lie responses took significantly longer, and there was a trend for this cost to decrease with practice. So while lies were successfully detected, the implementation of pupillometry was not successful, and future research is suggested in order to collect more powerful results from a stronger paradigm.
Show less - Date Issued
- 2018-11-28
- Identifier
- FSU_libsubv1_scholarship_submission_1544654398_5c390da3
- Format
- Thesis
- Title
- An Examination of Overprotective Parenting as a Link Between ADHD and Anxiety In 5-7 Year Old Children.
- Creator
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Kegley, Molly
- Abstract/Description
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Appearing in early to late childhood, Attention Deficit/Hyperactivity Disorder is one of the most common psychological disorders and can affect several aspects of a child’s life, including peer relations and overall well-being. Key symptoms of ADHD include symptoms restlessness, inattention, hyperactivity, and impulsivity. There is a high comorbidity between ADHD and anxiety, although it is not clear which disorder comes first developmentally since possible mechanisms that underlie the link...
Show moreAppearing in early to late childhood, Attention Deficit/Hyperactivity Disorder is one of the most common psychological disorders and can affect several aspects of a child’s life, including peer relations and overall well-being. Key symptoms of ADHD include symptoms restlessness, inattention, hyperactivity, and impulsivity. There is a high comorbidity between ADHD and anxiety, although it is not clear which disorder comes first developmentally since possible mechanisms that underlie the link between them are not well understood. Some studies have suggested that specific parenting styles may be linked to both ADHD and anxiety in young children. These studies have suggested that the symptoms of ADHD may lead to controlling or overprotective parenting - including intrusiveness and discouragement of personal independence. This parenting style has been linked to increased anxiety levels in children and could be a potential catalyst for increased levels of anxiety among children with ADHD. The current project aimed to examine whether the comorbidity between anxiety and ADHD could be connected to over-protective parenting by testing a mediation model in a group of 102 5-7 year old children. We utilized the Child Behavior Checklist (CBCL) to measure the level of ADHD and anxiety symptoms as reported by the parent and the Parenting Styles and Dimensions Questionnaire (PSDQ) to measure the overprotective tendencies exhibited by the parent. Results supported a mediation model wherein the link between ADHD and anxiety symptoms was significantly mediated by over-protective parenting style.
Show less - Date Issued
- 2018-10-19
- Identifier
- FSU_libsubv1_scholarship_submission_1544651013_082c4dfd
- Format
- Thesis
- Title
- Tracking the Evolution of Water Column NO3-+NO2- δ15N & δ18O from the South Atlantic, Through the Gulf of Mexico, and to the North Atlantic.
- Creator
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Howe, Samantha Paige
- Abstract/Description
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The Gulf of Mexico is known for the biogeochemical impacts of significant riverine nutrient inputs on the ecosystem. However, it is unclear whether nutrients delivered to the Gulf of Mexico are subsequently exported from the Gulf, further influencing the chemistry of the North Atlantic. The nitrogen and oxygen isotopic composition of nitrate (NO3-) have been increasingly used to track nitrogen fluxes to, from, and cycling within the ocean. Here, we report the first dual isotopic composition...
Show moreThe Gulf of Mexico is known for the biogeochemical impacts of significant riverine nutrient inputs on the ecosystem. However, it is unclear whether nutrients delivered to the Gulf of Mexico are subsequently exported from the Gulf, further influencing the chemistry of the North Atlantic. The nitrogen and oxygen isotopic composition of nitrate (NO3-) have been increasingly used to track nitrogen fluxes to, from, and cycling within the ocean. Here, we report the first dual isotopic composition measurements of NO3- from the Gulf of Mexico and Florida Straits, and compare these with prior measurements from the South and North Atlantic, and identify potential processes consistent with the observed shifts. The nitrogen and oxygen isotopic composition of nitrate in the Gulf of Mexico and Florida Straits is very similar to that previously measured in the Sargasso Sea. There is little evidence for riverine or submarine groundwater NO3- directly influencing the isotopic composition of NO3- exported from the Gulf of Mexico. These results are consistent with recent modeling work suggesting that the majority of riverine nutrients delivered to the Gulf of Mexico are retained in the near-shore region.
Show less - Date Issued
- 2018-11-30
- Identifier
- FSU_libsubv1_scholarship_submission_1544166511_4abc31f1
- Format
- Thesis
- Title
- Effects of Neonatal Stress on the Parietal Hippocampal Network.
- Creator
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Pei, Eric
- Abstract/Description
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Maternal separation in rats is used to study how stress impacts the brain. Our laboratory previously made use of a simple model of learning and memory to assess the effects of early stress in the form of daily maternal separation on adult learning and memory using a simple model system to assess learning and memory: eyeblink conditioning. Glucocorticoids are important for modulation of stress for adult learning and memory. Previously we found that neonatal stress increased glucocorticoid...
Show moreMaternal separation in rats is used to study how stress impacts the brain. Our laboratory previously made use of a simple model of learning and memory to assess the effects of early stress in the form of daily maternal separation on adult learning and memory using a simple model system to assess learning and memory: eyeblink conditioning. Glucocorticoids are important for modulation of stress for adult learning and memory. Previously we found that neonatal stress increased glucocorticoid receptor expression in the cerebellum, that increased receptor expression was correlated with impaired learning and that blocking excess receptors restored normal learning. Here we set out to begin assessing the possibility that more complex learning and memory brain systems may be altered in a similar way. The parietal hippocampal network has been shown to be part of the brain network responsible for learning, memory and spatial navigation and has not been previously assessed following neonatal stress. To test for how early stress affects learning and memory in the parietal hippocampal network, GR expression was quantified. By using previously obtained coronal sections of brain data, GR expression was analyzed in the parietal cortex. Neonatal maternal separation was found to not significantly alter GR expression in the parietal cortex or effect stress on the parietal hippocampal network. GR expression varies oppositely from studies on connectivity and differences in regional GR expression is suggested to not interact with neonatal stress.
Show less - Date Issued
- 2018-12-07
- Identifier
- FSU_libsubv1_scholarship_submission_1544194756_11d65681
- Format
- Thesis
- Title
- The Media and Drugs: A Content Analysis of Conversation Shifts Between Drug Wars.
- Creator
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Craig, Chloe
- Abstract/Description
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The media in the United States (U.S.) continues to expand its broad reaching coverage which shapes national discourse and perceptions about crime. Thus, it becomes increasingly important to assess the information that is being produced and disseminated through this medium. The purpose of the current research is to employ a content analysis of four widely circulated news sources, The New York Times (NYT), The Wall Street Journal (WSJ), The Washington Post, and USA Today, within the years 1987,...
Show moreThe media in the United States (U.S.) continues to expand its broad reaching coverage which shapes national discourse and perceptions about crime. Thus, it becomes increasingly important to assess the information that is being produced and disseminated through this medium. The purpose of the current research is to employ a content analysis of four widely circulated news sources, The New York Times (NYT), The Wall Street Journal (WSJ), The Washington Post, and USA Today, within the years 1987, 2005, and 2015 to assess the variability in media coverage and how the discussion of drugs and drug usage in these news sources has changed over time. This research focuses specific attention on whether the coverage changed, in part, as a result of the demographic shift in drug usage or some other bias process. This research seeks to shed light on implicit bias that underlies the news coverage as well as the policy responses to the drug problem in the U.S. In the analyses, four major themes emerged: criminality and social control, descriptions of treatment and rehabilitation, race and racial subtext, and policy. As hypothesized, there is a substantial decrease in the discussion of criminal justice responses to opioid use compared to methamphetamine (meth) and crack use. In addition, treatment was increasingly more likely to be discussed as time progressed, which suggest that this discussion was most common during the opioid crisis. Additionally, race seemed to play a large role within each time period as there were high counts of racial subtexts over all three time periods. Black Americans were labeled using low socioeconomic and criminal/violent descriptions, and White Americans were described as having higher potentials and access to resources. Finally, as policies shifted over these three time periods, so did the media coverage. The discussion within the meth epidemic is broader and contains slightly more personal stories, and the opioid crisis contained the highest number of individual stories connected with policy implementation. The results of this study highlight the relevance of the media and how they can control the conversation about major social ills in society. Thus, it is critical to understand how the media constructs narratives about social problems, and it is important for the media to recognize how the biases in its coverage can impact society at large. Overall, the significant shifts in media conversation about drugs can influence bias among readers. Society absorbs media messages regularly and will commonly use the media to form opinions about hot topics or relevant topics within the news. This study calls for news sources to recognize implicit biases and understand the impact of the way news is covered.
Show less - Date Issued
- 2018-11-27
- Identifier
- FSU_libsubv1_scholarship_submission_1543956341_2ce10521
- Format
- Thesis
- Title
- Harnessing near-IR Light with Molecular Photon Upconversion Solar Cells.
- Creator
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Posey, Victoria
- Abstract/Description
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Triplet-triplet annihilation photon upconversion (TTA-UC) allows for the conversion of two low energy photons into a higher energy state and can therefore be utilized to improve the efficiency of solar cell devices. TTA-UC allows for the increased efficiency because a large portion of the solar spectrum remains unabsorbed by solar devices. The use of an osmium sensitizer has allowed for the upconversion of near-IR to visible light in solution, but not yet on the surface. We explore the use of...
Show moreTriplet-triplet annihilation photon upconversion (TTA-UC) allows for the conversion of two low energy photons into a higher energy state and can therefore be utilized to improve the efficiency of solar cell devices. TTA-UC allows for the increased efficiency because a large portion of the solar spectrum remains unabsorbed by solar devices. The use of an osmium sensitizer has allowed for the upconversion of near-IR to visible light in solution, but not yet on the surface. We explore the use of an osmium sensitizer with perylene diimide acceptors in a self-assembled bilayer device utilizing TTA-UC.
Show less - Date Issued
- 2018-12-04
- Identifier
- FSU_libsubv1_scholarship_submission_1543956781_aa64daed
- Format
- Thesis
- Title
- Differential Expression of Neuron Glial Antigen 2 in a Subpopulation of Bone Marrow-Derived Macrophages.
- Creator
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Broussard, Erynn Nicole
- Abstract/Description
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Neuron glial antigen 2 (NG2) is a transmembrane protein predominately expressed in certain central nervous system (CNS) cells. Among these cell types are oligodendrocyte precursor cells (OPCs) and astrocytes. The 250 kilodalton core protein undergoes extensive post-translational modification. The addition of chondroitin sulfate glycosaminoglycan chains and disulfide bonds allows for binding to a number of receptors and extracellular ligands which allows it to play a vital role in cell...
Show moreNeuron glial antigen 2 (NG2) is a transmembrane protein predominately expressed in certain central nervous system (CNS) cells. Among these cell types are oligodendrocyte precursor cells (OPCs) and astrocytes. The 250 kilodalton core protein undergoes extensive post-translational modification. The addition of chondroitin sulfate glycosaminoglycan chains and disulfide bonds allows for binding to a number of receptors and extracellular ligands which allows it to play a vital role in cell migration, survival, and angiogenesis. Although NG2 expression has been classically associated with CNS cell types, the presence of NG2 has been detected in immune cells in a variety of CNS pathologies. Following a spinal cord injury (SCI), a small population of bone marrow-derived macrophages (BMDMs) infiltrating the injured spinal cord have been reported to express NG2. While infiltrating macrophages in the injured spinal cord are considered pro-inflammatory, it is unclear whether NG2+ BMDMs are classically (pro-inflammatory) or alternatively activated (anti-inflammatory). In addition, much is still unknown regarding the immunological role of NG2+ macrophages. To determine the factors driving NG2 expression, we quantified protein expression following various activating stimuli. The findings suggest that NG2 upregulation is strongly associated with alternative (anti-inflammatory) activation.
Show less - Date Issued
- 2018-12-06
- Identifier
- FSU_libsubv1_scholarship_submission_1544082780_9588a7c4
- Format
- Thesis
- Title
- Social Media Perceptions.
- Creator
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Stapp, Rebecca
- Abstract/Description
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This current study explores how millennials’ online perceptions are affecting their employment opportunities. Living in this digital age, all young adults and college students should be conscious of their online perception. This study exposes more information on what employers and recruiters do not want to see while screening a potential candidate’s social media. It will test the effects of a created social media user engaging in inappropriate images of sexual content and illegal drug use....
Show moreThis current study explores how millennials’ online perceptions are affecting their employment opportunities. Living in this digital age, all young adults and college students should be conscious of their online perception. This study exposes more information on what employers and recruiters do not want to see while screening a potential candidate’s social media. It will test the effects of a created social media user engaging in inappropriate images of sexual content and illegal drug use. This study focuses on how images related to sexual content and illegal drug use can impact one’s credibility and employment opportunities. After all, public perception is reality and if that reality has the potential to hurt an organization’s reputation, the potential candidate probably won’t be offered a position.
Show less - Date Issued
- 2018-12-12
- Identifier
- FSU_libsubv1_scholarship_submission_1544628646_043d7ad3
- Format
- Thesis
- Title
- Social Media and Self-Presentation: Trait Self-Control Predicts Image-Enhancement and Attention-Seeking on Facebook.
- Creator
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Gobes, Carina
- Abstract/Description
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Abstract Social media has revolutionized the way people communicate with one another, allowing individuals to communicate with anyone in the world at any time. These additional social opportunities increase the frequency with which people can seek attention and enhance their image. Related maladaptive social behaviors have been tied to undermined psychological wellbeing. Because deficits in self-control have been linked to false presentations and dishonesty in “real life,” we investigated...
Show moreAbstract Social media has revolutionized the way people communicate with one another, allowing individuals to communicate with anyone in the world at any time. These additional social opportunities increase the frequency with which people can seek attention and enhance their image. Related maladaptive social behaviors have been tied to undermined psychological wellbeing. Because deficits in self-control have been linked to false presentations and dishonesty in “real life,” we investigated whether self-control may predict such behaviors on social media, specifically Facebook. Study 1 furnished evidence for the reliability and validity of our attention-seeking and image-enhancement scales, and demonstrated that trait self-control is negatively related to attention-seeking and image-enhancement. Study 2 replicated these findings while also employing an experimental design to test the causal link between trait and state self-control (i.e., ego depletion) and actual behavior online. However, depleted participants were not more likely than nondepleted participants to make an attention-seeking or image-enhancing post on Facebook. Implications suggest that self-control may be a good target for interventions that protect against social media’s negative effects on wellbeing.
Show less - Date Issued
- 2017-08-03
- Identifier
- FSU_libsubv1_scholarship_submission_1501806436_61652c10
- Format
- Thesis
- Title
- Impulsivity, Emotionality, and Peer Norms of Drinking Related Behaviors as Predictive Factors of Substance Use: Impulsivity, Emotionality, and Peer Norms on Substance Use.
- Creator
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Wheeler, Brock
- Date Issued
- 2017-08-04
- Identifier
- FSU_libsubv1_scholarship_submission_1501899343_93451e3f
- Format
- Thesis
- Title
- Deconstructing Nature and Society: An Account of Waiãpi Ecology.
- Creator
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Schwenk, Christopher L
- Abstract/Description
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Western ecology relies heavily on dichotomous conceptions of individuals’ relations to their society and to their environment, placing nature and society in opposition to one another as distinct realms. This dichotomy motivates the exploitative, consumerist relationship between Western societies and the natural resources exchanged as matters of economy and production. The Waiãpi indigenous community lives within a different social world composed of starkly different frameworks of society that...
Show moreWestern ecology relies heavily on dichotomous conceptions of individuals’ relations to their society and to their environment, placing nature and society in opposition to one another as distinct realms. This dichotomy motivates the exploitative, consumerist relationship between Western societies and the natural resources exchanged as matters of economy and production. The Waiãpi indigenous community lives within a different social world composed of starkly different frameworks of society that exist apart from dichotomous understandings. This work deconstructs the nature-society dichotomy, turning to Waiãpi myths and stories as evidence of Waiãpi conceptions of being. These stories reveal a fluid cosmos, constructed of fractal layers of subjectivity in which agents are subjected to a greater whole. Furthermore, they reveal a relational net of “dividual” beings understood only insofar as they relate to others. These attributes of the Waiãpi social world stand in critique of Western modernity and vitiate the nature-society dichotomy.
Show less - Date Issued
- 2017-06-30
- Identifier
- FSU_libsubv1_scholarship_submission_1498882646_01e5f8a0
- Format
- Thesis
- Title
- Notch Overexpression During Epithelial Tumorigenesis: The Role Of NICD As An Oncogene In An Lgl Knockdown System.
- Creator
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Tremblay, Nicholas
- Abstract/Description
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The Notch signaling pathway is an evolutionarily conserved method of cellular communication which coordinates cell differentiation and cell fate determination events throughout many different tissues in all metazoans. While Notch is classically referred to as a tumor suppressor gene, cases of oncogenic behavior have also been documented; this creates uncertainty regarding the pathway’s role in a tumor under tissue specific conditions. My project utilized follicle cells within the ovaries of...
Show moreThe Notch signaling pathway is an evolutionarily conserved method of cellular communication which coordinates cell differentiation and cell fate determination events throughout many different tissues in all metazoans. While Notch is classically referred to as a tumor suppressor gene, cases of oncogenic behavior have also been documented; this creates uncertainty regarding the pathway’s role in a tumor under tissue specific conditions. My project utilized follicle cells within the ovaries of Drosophila melanogaster as a model system to examine upregulation of Notch signaling in an epithelial cell tumor environment (generated by knockdown of lgl: a well-established tumor suppressor). While overexpression of Notch is not sufficient for tumor formation, I found that there is a significant increase in tumor area when overexpressed in Lgl knockdown multilayered follicle cells. These tumor tissues were then allografted into adult wildtype females and found to survive and grow over the course of 9 days. These results suggest a novel tumorigenic role of overactive Notch signaling when the tumor suppressive function of lgl is lost, and raise questions regarding which specific interactions were responsible for the observed incidence of follicle cell proliferation in this system.
Show less - Date Issued
- 2017-07-27
- Identifier
- FSU_libsubv1_scholarship_submission_1501199321_cdb04b9d
- Format
- Thesis
- Title
- A Comparative Analysis of Refugee Policies in the U.S. and Germany.
- Creator
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Conrad, Molly
- Abstract/Description
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The globe is currently facing the most dire refugee crisis since World War II. By nature, refugee crises have international implications. Yet, the current infrastructures responsible for refugee protection remain insufficient. The U.S. and Germany are two of the world’s leaders in terms of refugee protection. However, the states implement vastly different structures, interpreting the 1951 Geneva Convention and subsequent 1967 Protocol in accordance with their domestic needs and national...
Show moreThe globe is currently facing the most dire refugee crisis since World War II. By nature, refugee crises have international implications. Yet, the current infrastructures responsible for refugee protection remain insufficient. The U.S. and Germany are two of the world’s leaders in terms of refugee protection. However, the states implement vastly different structures, interpreting the 1951 Geneva Convention and subsequent 1967 Protocol in accordance with their domestic needs and national security infrastructures. Each state offered a different response to the humanitarian crisis in Syria, which has become a priority for the United Nations High Commissioner for Refugees. The cooperation between states and UNHCR is complex, especially given additional bodies of governance such as the European Union. In this paper, I explore some of those complexities to understand the differences and similarities between the refugee and asylum policies of the U.S. and Germany. In addition, I observe the roles of states, the European Union, and UNHCR in the international mission of ensuring protection for refugees.
Show less - Date Issued
- 2017-08-08
- Identifier
- FSU_libsubv1_scholarship_submission_1502216726_dc77cd4b
- Format
- Thesis
- Title
- A Health Assessment of Historical Human Skeletal Remains from St. Augustine, Florida.
- Creator
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Berger, Parker L.
- Abstract/Description
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In recent decades, bioarchaeological technology and methodology used to analyze human skeletal remains and build biological profiles have drastically improved. Florida State University houses human skeletal remains from four sites in St. Augustine, Florida (8SA36-7, 8SA7-6, B28L1and B42L1) which were originally excavated and analyzed in the 1970s. This study uses current techniques to revisit previously examined skeletal material. Estimations of sex, age at death, and stature were reassessed,...
Show moreIn recent decades, bioarchaeological technology and methodology used to analyze human skeletal remains and build biological profiles have drastically improved. Florida State University houses human skeletal remains from four sites in St. Augustine, Florida (8SA36-7, 8SA7-6, B28L1and B42L1) which were originally excavated and analyzed in the 1970s. This study uses current techniques to revisit previously examined skeletal material. Estimations of sex, age at death, and stature were reassessed, and new body mass estimations were added. The current labeling of the material from three of the sites differed drastically from the labeling described in the previous analyses. This issue created challenges when trying to compare current finding to those of the previous assessments. However, this analysis yielded significantly different results from previous assessments when assigning sex, while concluding average age and stature estimates similar to previous assessments. Additionally, an updated and shareable digital catalogue, an inventory of materials, and collection of field notes and previous research reports were created. This project adds to established data and serves as a method of conservation of information associated with four St. Augustine archaeological sites.
Show less - Date Issued
- 2018-07-18
- Identifier
- FSU_libsubv1_scholarship_submission_1531941780_62896e46
- Format
- Thesis
- Title
- Categorical Perception in Complex Objects.
- Creator
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Boyd, Joshua
- Abstract/Description
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Categorical perception refers to the enhanced discernibility of stimuli that exist in different innate or learned categories. This effect has been observed in many different contexts, ranging from speech phoneme differentiation (Liberman et al, 1957) to distinguishing between simple shapes (Goldstone, 1994). While evidence for categorical perception has been found for many different types of stimuli, experiments have given mixed results regarding the existence of CP in complex (non-face)...
Show moreCategorical perception refers to the enhanced discernibility of stimuli that exist in different innate or learned categories. This effect has been observed in many different contexts, ranging from speech phoneme differentiation (Liberman et al, 1957) to distinguishing between simple shapes (Goldstone, 1994). While evidence for categorical perception has been found for many different types of stimuli, experiments have given mixed results regarding the existence of CP in complex (non-face) shapes. Some research found no evidence for categorical perception of complex shapes. Instead, global acquired distinctiveness, or an enhanced ability to detect dimensionally relevant differences regardless of category, was determined to be present (Folstein, Palmeri and Gauthier, 2014). This study attempted to find evidence of categorical perception in complex objects by using a variation of an experimental setup utilized by Goldstone in 1994. Subjects completed both a category learning exercise and object discrimination task within a single one-and-a-half-hour session. While no evidence for categorical perception was discovered, the amount of time participants had to learn the categories may have prevented the effect from being observed.
Show less - Date Issued
- 2018-04-26
- Identifier
- FSU_libsubv1_scholarship_submission_1524799479_df6b8b21
- Format
- Thesis
- Title
- The effects of L. reuteri on anxiety-like and social affiliation behaviors in female prairie voles.
- Creator
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McGuire, George Patrick
- Abstract/Description
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Microbial species living in our gastrointestinal tract, commonly called microbiota, communicate with the Central Nervous System (CNS) via the vagus nerve and production of metabolites, creating a gut-brain-axis. Via this connection, the microbiota has been shown to affect behavior, particularly anxiety-like and social behaviors. This study was designed to evaluate the effects of Lactobacillus reuteri treatment on anxiety-like and social affiliation behaviors in the prairie vole (Microtus...
Show moreMicrobial species living in our gastrointestinal tract, commonly called microbiota, communicate with the Central Nervous System (CNS) via the vagus nerve and production of metabolites, creating a gut-brain-axis. Via this connection, the microbiota has been shown to affect behavior, particularly anxiety-like and social behaviors. This study was designed to evaluate the effects of Lactobacillus reuteri treatment on anxiety-like and social affiliation behaviors in the prairie vole (Microtus ochrogaster) model. Sexually naïve female prairie voles received live L. reuteri treatment or heat-killed L. reuteri over a 28-day period. Then subjects’ behavior was evaluated during tests for anxiety-like behavior (Open Field and Elevated Plus Maze) and tests for social affiliation behavior (Social Affiliation Test). Live L. reuteri treatment resulted in decreased time spent in the conspecific chamber, decreased time spent interacting with the conspecific, and increased time in the corner of the conspecific chamber, indicating decreased social affiliation behavior. These data demonstrate behavior-specific effects of L. reuteri, suggesting a role in social behavior of prairie voles.
Show less - Date Issued
- 2017-12-08
- Identifier
- FSU_libsubv1_scholarship_submission_1512752696_396faa95
- Format
- Thesis
- Title
- Social Media Effects on Social Capital.
- Creator
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Mancuso, Stephanie
- Abstract/Description
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This study examines how the prevalent usage of social networking sites influences college student’s social capital. It explores student attitudes towards social media, social trust, and civic engagement, all of which will be compared against their overall SNS usage on some of the most popular platforms. The analyses are reported from an online survey sample of undergraduate students from a large southeastern research university (N = 88). Findings suggest a strong correlation between both the...
Show moreThis study examines how the prevalent usage of social networking sites influences college student’s social capital. It explores student attitudes towards social media, social trust, and civic engagement, all of which will be compared against their overall SNS usage on some of the most popular platforms. The analyses are reported from an online survey sample of undergraduate students from a large southeastern research university (N = 88). Findings suggest a strong correlation between both the relationship between student’s social media usage and their civic engagement and overall attitude towards social media. No correlation was found between the size of a student’s SNS network and their levels of civic engagement.
Show less - Date Issued
- 2017-12-07
- Identifier
- FSU_libsubv1_scholarship_submission_1512676262_4d4d61e0
- Format
- Thesis
- Title
- The Influence of Childhood Abuse and Neglect on Self-Esteem, Violence, and Depressive Symptoms in Early Adulthood.
- Creator
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Kuper, Julie
- Abstract/Description
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This study explores the effects of childhood abuse and neglect on early adulthood outcomes of violent behavior, depressive symptoms, and self-esteem. Protective factors including verbal intelligence, family attachments, and neighborhood conditions measured during adolescence were included to assess whether these factors can explain why some victims of childhood abuse and neglect fare better than others in early adulthood. Using data from Waves I and III of the public-use version of the...
Show moreThis study explores the effects of childhood abuse and neglect on early adulthood outcomes of violent behavior, depressive symptoms, and self-esteem. Protective factors including verbal intelligence, family attachments, and neighborhood conditions measured during adolescence were included to assess whether these factors can explain why some victims of childhood abuse and neglect fare better than others in early adulthood. Using data from Waves I and III of the public-use version of the National Longitudinal Study of Adolescent to Adult Health (Add Health), bivariate correlations were employed to evaluate the strength of the relationships between childhood abuse and neglect and the dependent variables in this study. T-tests and Chi-square tests were also used to measure the differences in protective factors and outcomes across groups of victimized children and children who were not subject to abuse and neglect. Results indicated that individuals who were abused and neglected during childhood were more likely to experience negative outcomes in early adulthood. Further, abused or neglected individuals tended to have lower intelligence, weaker family attachments, and tended to live in more problematic neighborhoods during adolescence. Nevertheless, abuse and neglect during childhood does not guarantee individuals will experience negative outcomes in early adulthood, especially in the presence of protective factors.
Show less - Date Issued
- 2017-12-07
- Identifier
- FSU_libsubv1_scholarship_submission_1512676006_2c2e1262
- Format
- Thesis
- Title
- The role of compatibility in determining the costs and benefits of polyandry in the broadcast spawning urchin Lytechinus variegatus.
- Creator
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Betters, Melissa
- Abstract/Description
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When females mate with multiple males is a phenomenon known as polyandry. This is a strategy of sexual reproduction that presents both costs and benefits to female fitness. Mating with multiple males may maximize sperm availability and increase the likelihood of encountering a high-quality male. On the other hand, sperm may become overwhelming and result in polyspermy. With increasing mates, female could increase the risk of encountering low-quality males as well. The research presented in...
Show moreWhen females mate with multiple males is a phenomenon known as polyandry. This is a strategy of sexual reproduction that presents both costs and benefits to female fitness. Mating with multiple males may maximize sperm availability and increase the likelihood of encountering a high-quality male. On the other hand, sperm may become overwhelming and result in polyspermy. With increasing mates, female could increase the risk of encountering low-quality males as well. The research presented in this paper examined how these costs and benefits could potentially affect the fitness of individuals within a broadcast spawning population of marine urchins, Lytechinus variegatus. These organisms release their gametes into the water column, where fertilization occurs externally. This study attempted to examine how fertilization success was affected, if at all, by a female’s eggs encountering sperm from two different males in the water column rather than just one. Urchin color was also controlled for in order to see whether it may be used as a proxy for gametic compatibility between individuals. The data suggested that by pooling males together in the water column, rather than mating with one male at a time, the efficiency of fertilization increased. Therefore, it took less sperm to reach the same fertilization success when males were pooled together than when they were kept apart. Though assortative mating based on color was predicted, the data only showed evidence of this during the trials in which males were pooled together. When females were presented with a single male, male and female identity were instead the best predictors of compatibility.
Show less - Date Issued
- 2017-04-28
- Identifier
- FSU_libsubv1_scholarship_submission_1493414146
- Format
- Thesis
- Title
- Reading Ability and Substance Use in Adolescents: A Twin Study.
- Creator
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Bater, Devan
- Abstract/Description
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Through the study of vulnerability and early risk factors, the increased chance of those with reading disabilities suffering from substance abuse can be possibly prevented and better ways to cope can be discovered. Previous studies have shown that low reading scores and abilities in adolescence can be an early sign of possible reading disorders and substance use in adolescence can be a risk factor for substance abuse later in life. The focus of this study was to explore the correlation...
Show moreThrough the study of vulnerability and early risk factors, the increased chance of those with reading disabilities suffering from substance abuse can be possibly prevented and better ways to cope can be discovered. Previous studies have shown that low reading scores and abilities in adolescence can be an early sign of possible reading disorders and substance use in adolescence can be a risk factor for substance abuse later in life. The focus of this study was to explore the correlation between different reading ability measures and a substance use measure to determine if there is a correlation between the two risk factors. A twin study was also used to determine if any possible correlations were due to genetic factors, environmental factors, or both. This study was conducted using adolescent twin data collected from the Florida Twin Project on Reading, Behavior, and Environment. The substance use measure in this study focused primarily on alcohol use. It was hypothesized that lower reading abilities would mean a higher probability of substance use, and that this correlation would be caused by genetic factors. The results showed very few phenotypic correlations with statistical significance between the reading ability measures and the substance use measure. The twin correlations for the substance use measure proved to show the correlations with the most statistical significance. Only one cross-twin cross-trait correlation was found to be statistically significant between the reading ability measures and the substance use measure. The findings in this study do not provide evidence to support nor dispute the hypothesis since there did not appear to be a clear positive nor negative relationship between low reading ability and substance use in adolescents. The results did suggest non-additive genetics could be a causal effect on the relationship of substance use between twin pairs.
Show less - Date Issued
- 2018-04-04
- Identifier
- FSU_libsubv1_scholarship_submission_1524848029_b28c57d3
- Format
- Thesis