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Social Impact Of Traumatic Brain Injury In Adolescents: A Mixed Methods Study With A Focus On Rural Adolescents, Brandon Jared Rennie

Graduate Student Theses, Dissertations, & Professional Papers

Pediatric Traumatic Brain Injury (TBI) is a serious public health concern in the United States. The least studied populations are those at the highest risk to sustain a TBI, specifically, youth, and especially those living in rural areas. Despite the documented negative impact on social outcomes and relative importance of social functioning in youth, research is sparse with regard to how various injury and non-injury factors interact to influence social outcomes and how best to assess this population for intervention planning and monitoring. Participants are four adolescents who have had TBIs of mild or moderate severity and their mothers (three …

The Evolution Of Nutritional Co-Endosymbionts In Cicadas, James Theodore Van Leuven

Graduate Student Theses, Dissertations, & Professional Papers

Symbiosis occurs between organisms in all domains of life. The evolution of obligate symbionts from free-living bacteria typically results in the loss of genes involved in metabolic independence and an overall reduction in genome size. Outside the organelles, the most extreme examples of genome reduction come from the intracellular symbionts of sap-feeding insects. The genomes of these bacteria encode very few genes other than those involved in translation, replication, and amino acid synthesis. Candidatus Hodgkinia cicadicola (Hodgkinia) and Candidatus Sulcia muelleri (Sulcia) live in specialized insect cells (bacteriocytes) of the cicada Diceroprocta semicincta, and have undergone severe gene loss. Hodgkinia …

Investigating The Influence Of Airborne Particulate Matter Source And Size On Health Outcomes, Matthew Darryl Ferguson

Graduate Student Theses, Dissertations, & Professional Papers

Air pollution is an environmental health concern throughout the world, and is responsible for an estimated 1 out of 8 deaths. As a common component of air pollution, particulate matter (PM) is one of six criteria air pollutants regulated by the Environmental Protection Agency (EPA), with existing ambient standards for both PM2.5 and PM10. Currently there are no health-based regulations for the size fraction between 2.5 and 10 μm, commonly known as the coarse fraction (PMc). Previous studies show that PMc can induce health effects such as increased inflammation, and may be more detrimental to susceptible populations when directly compared …

Predation Risk And Vegetation Effects On Avian Diversity, Species Turnover, Reproduction, And Fitness, Joseph Anthony Lamanna

Graduate Student Theses, Dissertations, & Professional Papers

Vegetation is the habitat that underlies animal distributions. Yet mechanisms by which dynamic changes in vegetation affect animal fitness, distributions, and communities remain unclear. For example, animal richness and species composition often change with decreased forest structural complexity associated with anthropogenic disturbance, but differences in latitude and vegetation effects on reproductive success may influence species responses to vegetation changes. My global meta-analysis of logging effects on bird communities revealed substantial species loss in tropical but not temperate forests. This suggests tropical birds exhibit greater habitat specialization than their temperate relatives.

My meta-analysis also suggested that changes in reproductive success can …

Factors Affecting Plant Responses To Arbuscular Mycorrhizal Fungi And Soil Fungal Communities, Lauren Priestman Waller

Graduate Student Theses, Dissertations, & Professional Papers

Arbuscular mycorrhizal (AM) fungi are ancient mutualists that associate with the majority of plants. However, the factors that influence how much a plant benefits from AM fungi, or the factors that influence other root-associated fungi are unclear. I examined how plant traits related to nutrient availability can explain variation in AMresponsiveness and whether native species differ from exotics in these relationships. Leaf mass per unit of area (LMA) correlated positively with mycorrhizal growth responsiveness (MGR) and root colonization (RC) among native species. This indicates that native species with more conservative traits more strongly benefit, and benefit from, AM fungi. Furthermore, …

Development And Validation Of Children's Environmental Affect (Attitude, Sensitivity And Willingness To Take Action) Scale, Mehmet Erdoǧan, Tom Marcinkowski

Mathematics and System Engineering Faculty Publications

This study focuses on the design, development, validation, and psychometric properties of the Children's Environmental Affect Scale (CEAS). Te following steps were taken in developing the CEAS. A substantial review of literature on environmental affect and EL helped the researchers identify several scales and questionnaires that, in turn, help establish the item pool. The initial scale derived from this item pool was reviewed by the selected experts (n=17) and then pilot tested with 673 students in 4 th -5 th grades. These pilot data were subjected to Explanatory Factor Analysis (EFA) to reveal the dimensions underlying these pilot items. Later, …

"Why Wait Until They Commit A Crime?": Moral Imbecility And The Problem Of Knowledge In Progressive America, 1880-1920, Chelsea D. Chamberlain

Graduate Student Theses, Dissertations, & Professional Papers

Focusing on the forty-year period from 1880 to 1920, this thesis explores moral imbecility--the lack of a moral sense at birth--as a contested medical diagnosis that embodied many of modernizing America's greatest fears. It argues that moral imbecility played a pivotal role in facilitating the emergence of several hallmarks of modern America. The diagnosis legitimated medical experts’ far-reaching cultural authority, encouraged the rise of a surveillance society, and secured the growth of a medicalized bureaucratic state responsible for institutionalizing hundreds of thousands of people. As a potent medico-cultural threat based upon new and disputed knowledge claims, it became an important …

Gait Intervention For Improvements In Human Top Speed Running, Michelle Buechner

Graduate Student Theses, Dissertations, & Professional Papers

Between individuals faster sprinting speeds are achieved by applying greater stance average forces against the running surface. Recent evidence further indicates that elite level performers also strike the ground with leg kinematics that differ from those of non-elites and that these leg movements act to enhance the force transients occurring in the milliseconds following foot-ground impact. I investigated whether sprint performance could be enhanced through a short term gait intervention, consisting of 3 laboratory training sessions wherein subjects (n = 6) completed 5 high-speed runs on an instrumented force treadmill at 90% of their measured top sprint. The subjects received …

Co2 And O2 Variability In The Partially Ice-Covered Arctic Ocean, Asm F. Islam

Graduate Student Theses, Dissertations, & Professional Papers

Limited carbon cycle research has been conducted so far in the Arctic Ocean (AO) compared to many other open-ocean and coastal environments, with relatively few studies of the inorganic carbon cycle and air-sea gas exchange. Understanding these processes in depth and understanding the physical, chemical, and biological processes that control carbon dioxide (CO₂) and dissolved oxygen (DO) variability in the AO are crucial to predicting the future of the carbon cycle in the region and its impact on greenhouse gases and marine ecosystem processes, such as ocean acidification. To study the AO carbon cycle, in situ time-series data …

The Role Of Dksa In The Stringent Response In The Lyme Disease Spirochete Borrelia Burgdorferi, Britney Cheff

Graduate Student Theses, Dissertations, & Professional Papers

Borrelia burgdorferi, the bacterium that causes Lyme disease, is maintained in nature through an enzootic cycle that includes a tick vector and a vertebrate host. The bacterium is acquired by an Ixodes tick from an infected vertebrate. The bacterium alters its gene expression to adapt to different environments of the tick and vertebrate. Between tick feedings, B. burgdorferi must contend with nutrient stress. The stringent response is a physiological mechanism when bacteria switch from “thriving” to “surviving” mode in response to limited nutrient resources; it is mediated by an increase in the nucleotide alarmone guanosine penta- or tetraphosphate, abbreviated …

An Assessment Of The Health Needs Of The Transgender Community In Montana, Karishma Chainani

Graduate Student Theses, Dissertations, & Professional Papers

Transgender individuals face a unique set of challenges in their day to day lives. While issues regarding stigma and discrimination are well documented in the literature, most of the information about transgender people has been gathered in urban settings. The purpose of this study, therefore, was to explore factors that influence quality of life and risk of infection with Human Immunodeficiency Virus (HIV), Hepatitis C (HCV), Sexually Transmitted Diseases (STD’s) among transgender people living in Montana. A questionnaire was developed after a thorough review of the literature as well as a review of existing assessments. The questionnaire was reviewed by …

The Historical And Cultural Landscape Of The Missoula Valley During The 19th And 20th Centuries, Mary Bobbitt

Graduate Student Theses, Dissertations, & Professional Papers

Archaeological case studies can be used as microcosms for understanding questions related to landscape transformations and climate change throughout the arid American West. The early 19^th century marked a time when significant changes began to take place in the Missoula Valley due to influences of European exploration and settlement in the region. By incorporating multiple sources from a variety of disciplines and using a theoretical framework grounded in landscape theory, this research examines the ways in which humans have altered ecosystem structure, function, and transformations in the region over time, and specifically over the past 200 years. Historic General …

Thermodynamics Of Hhr23a Ubiquitin-Associated (Uba) Domains, Moses Joseph Leavens

Graduate Student Theses, Dissertations, & Professional Papers

Ubiquitin-associated (UBA) domains have been discovered in several proteins within the cell, and at least one domain plays an important functional role in cellular phenomena such as NF-κB signaling. Mutations within the UBA(2) domain of the ubiquitin-binding scaffold protein p62 are frequently observed in patients suffering from Paget’s disease of bone. The human DNA excision repair protein HHR23A contains the UBA(1) and UBA(2) domains, and nuclear magnetic resonance (NMR) structures depict their compact three-helix bundles. Moreover, the HHR23A UBA(1) and UBA(2) only share approximately 20% primary sequence identity. The p62 UBA(2) domain has been shown to contain quaternary structure in …

Politicized Climate Change Communication: An Integrative Complexity Analysis, Meredith A. Repke

Graduate Student Theses, Dissertations, & Professional Papers

The vast majority of scientists agree that anthropogenic activities have caused the level of CO₂ in the atmosphere to rise at an unprecedented rate, and that the consequences of such a rise may very well be extreme. Despite these warnings, the American people do not possess, on average, the same level of concern towards climate change as scientists. The polarization of media in recent decades, the prevalence of selective exposure, and the general position on climate change of the two major political parties have led to liberals and conservatives consuming different information relevant to climate science. While evidence exists …

Validity Of Landmark Selection Given Different 3d Scan Processing Parameters: Landmark Location On 3d Models Of Yacchi Crania, Mary-Margaret Murphy

Graduate Student Theses, Dissertations, & Professional Papers

This project tests the validity of the use of models generated with 3-D technology for the purposes of advancing craniometric methods in anthropology. The literature describing this technology as it is being incorporated and applied is focused on the classification of crania within population structure and evolutionary development. 3-D modeling methods create data that are static over time - as long as the collection and processing has a statistically insignificant impact on deviation from the original "true" sample.

This thesis is interested in the questions of data collection given variations between processing and metadata of 3-D models and uses data …

Satellite Microwave Measurement Of Land Surface Phenology: Clarifying Vegetation Phenology Response To Climatic Drivers And Extreme Events, Matthew Oushana Jones

Graduate Student Theses, Dissertations, & Professional Papers

The seasonality of terrestrial vegetation controls feedbacks to the climate system including land-atmosphere water, energy and carbon (CO2) exchanges with cascading effects on regional-to-global weather and circulation patterns. Proper characterization of vegetation phenology is necessary to understand and quantify changes in the earthÆs ecosystems and biogeochemical cycles and is a key component in tracking ecological species response to climate change. The response of both functional and structural vegetation phenology to climatic drivers on a global scale is still poorly understood however, which has hindered the development of robust vegetation phenology models. In this dissertation I use satellite microwave vegetation optical …

Dna Methylation In Humans And Dogs: Evaluating The Impact Of Nutritional And Particulate Exposures, Luke Benjamin Montrose

Graduate Student Theses, Dissertations, & Professional Papers

Asthma is among the most common chronic diseases in children, among the leading causes of hospitalization for children, and one of the leading causes of school absenteeism. Discovery of preventable factors and the underlying mechanisms that exacerbate asthma among prevalent cases is important for mitigating the health burden of this childhood disease. Environmental factors such as exposure to particulate matter (PM) or nutritional deficiencies can lead to poor respiratory health among susceptible children. Recent animal studies suggest that PM exposures and dietary nutrients may influence asthma pathways through epigenetic mechanisms. Epigenetic modifications are heritable changes that can regulate gene activity …

Insight Dialogue: Investigation Of A Relational Meditation Practice, Zed David Kramer

Graduate Student Theses, Dissertations, & Professional Papers

Contemporary psychology has shown a strong and growing interest in Buddhist psychological (BP) theory and practice, which has informed numerous clinical interventions, influenced psychotherapeutic approach, and increasingly been the subject of empirical investigation (Goyal et al., 2014, Keng, Smoski, & Robins, 2011, Neff & Germer, 2012). This widespread adoption and adaptation of BP concepts, including mindfulness, self-compassion, and compassion, has primarily focused on the development of individual skills and internal change. However, despite the critical role relationship plays in human development, in the experience of distress, and in healing, the development of these skills and qualities in an explicitly relational …

Honors @ Georgia Southern, University Honors Program Students And Staff, Georgia Southern University

Honors College: News & Publications (2008-2020)

• Honors Inquiry in Ireland
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Microbubble Generation By Piezotransducer For Biological Studies, W. Zhu, M. Alkhazal, M. Cho, S. Xiao

Bioelectrics Publications

Bubbles induced by blast waves or shocks are speculated to be the major cause of damages in biological cells in mild traumatic brain injuries. Microbubble collapse was found to induce noticeable cell detachment from the cell substrate, changes in focal adhesion and biomechanics. To better understand the bubble mechanism, we would like to construct a system, which allows us to clearly differentiate the impact of bubbles from that of shocks. Such a generator needs to be low profile in order to place under a microscope. A piezoelectric transducer system was designed to meet the need. The system uses either a …

Cell Stimulation And Calcium Mobilization By Picosecond Electric Pulses, Iurii Semenov, Shu Xiao, Dongkoo Kang, Karl H. Schoenbach, Andrei G. Pakhomov

Bioelectrics Publications

We tested if picosecond electric pulses (psEP; 190 kV/cm, 500 ps at 50% height), which are much shorter than channel activation time, can activate voltage-gated (VG) channels. Cytosolic Ca²⁺ was monitored by Fura-2 ratiometric imaging in GH3 and NG108 cells (which express multiple types of VG calcium channels, VGCC), and in CHO cells (which express no VGCC). Trains of up to 100 psEP at 1 kHz elicited no response in CHO cells. However, even a single psEP significantly increased Ca²⁺ in both GH3 (by 114 +/- 48 nM) and NG108 cells (by 6 +/- 1.1 nM). Trains of …

Picosecond To Terahertz Perturbation Of Interfacial Water And Electropermeabilization Of Biological Membranes, P. Thomas Vernier, Zachary A. Levine, Ming-Chak Ho, Shu Xiao, Iurii Semenov, Andrei G. Pakhomov

Bioelectrics Publications

Non-thermal probing and stimulation with subnanosecond electric pulses and terahertz electromagnetic radiation may lead to new, minimally invasive diagnostic and therapeutic procedures and to methods for remote monitoring and analysis of biological systems, including plants, animals, and humans. To effectively engineer these still-emerging tools, we need an understanding of the biophysical mechanisms underlying the responses that have been reported to these novel stimuli. We show here that subnanosecond (≤500 ps) electric pulses induce action potentials in neurons and cause calcium transients in neuroblastoma-glioma hybrid cells, and we report complementary molecular dynamics simulations of phospholipid bilayers in electric fields in which …

Indoor Location Tracking And Orientation Estimation Using A Particle Filter, Ins, And Rssi, Cameron Ramin Nouri

Master's Theses

With the advent of wireless sensor technologies becoming more and more common-place in wearable devices and smartphones, indoor localization is becoming a heavily researched topic. One such application for this topic is in the medical field where wireless sensor devices that are capable of monitoring patient vitals and giving accurate location estimations allow for a less intrusive environment for nursing home patients.

This project explores the usage of using received signal strength indication (RSSI) in conjunction with an inertial navigation system (INS) to provide location estimations without the use of GPS in a Particle Filter with a small development microcontroller …

Embedded Power Active Contact Lens, Benny Ng

Master's Theses

This thesis designed and fabricated an active contact lens that notifies the user during the detection of an external wireless signal. The lens contained a printed antenna to communicate with a 2.4GHz system and provide inductive charging operating at 13.56 MHz. The lens utilizes a CBC005 5µAh thin film battery by Cymbet as a power source. A custom IC was designed using the On Semiconductor CMOS C5 0.6 µm process to manage the battery and drive the display. A printed single element display using electrochromic ink was chosen as it is able to indicate the user when activated while staying …

Religion And Interpersonal Trust: An Individual Differences Analysis, Kaitlyn Sawyer

College of Graduate Studies: Theses & Dissertations

Several factors including experience, group membership, and religious involvement can have an impact on trust. The purpose of the current research was to examine religion as a possible factor in an individual’s trust behaviors. Researchers hypothesized that (1) individuals who identified themselves as being religious would trust strangers more easily than those who did not identify with a religion, and (2) that individuals would more easily trust strangers if the strangers were presented as being religious. Seventy-two participants were presented with three vignettes and were asked to respond to a series of scales measuring general trust, religiosity, conservatism, social distance, …

Bamboo Harvesting For Household Income Generation In The Ethiopian Highlands: Current Conditions And Management Challenges, Bridget L. Tinsley

Graduate Student Theses, Dissertations, & Professional Papers

Bamboo is a renewable resource that has been advocated as a means to alleviate poverty and foster rural development throughout the world. Ethiopia holds 67% of continental Africa’s bamboo coverage and is gaining interest by international markets. Despite great speculation about Ethiopia’s bamboo market potential, foundational information regarding household utilization and income reliance is lacking. To understand how bamboo contributes to rural Ethiopian households, a quantitative household assessment was undertaken in this study. A questionnaire census collected data from 371 households. A quantitative assessment of household incomes and assets evaluated what factors influence bamboo harvesting.

The contribution of bamboo to …

The Alexandrian Epitomes Of Galen, Volume 1: On The Medical Sects For Beginners; The Small Art Of Medicine; On The Elements According To The Opinion Of Hippocrates, Galen, John Walbridge, Translator

Maxwell Institute Publications

The second-century physician and philosopher Galen is not known for brevity. Although his writings on medicine are famously verbose and numerous, for centuries they constituted much of the standard syllabi for medical students. About fourteen hundred years ago, one or possibly several professors put together a series of epitomes of Galen’s work. In contrast to Galen’s rambling and argumentative style, these epitomes present the material dryly but clearly, offering systematic categorizations of concepts, symptoms, diseases, and organs. Originally written in Greek, The Alexandrian Epitomes of Galen can also be found in Arabic and Hebrew translations, and the epitomes have had …

Toward A Mormon Systematic Theology: Essay On Wrestling The Angel By Terryl L. Givens, Stephen H. Webb

BYU Studies

Can Mormon theology be made systematic? That question presupposes, of course, that it is not systematic already, and this is where the skeptics of system building have an advantage. If Mormon theology appears to be a bit protracted, improvised, and even makeshift if not positively byzantine, then forcing it into a schematic form might be inappropriate. Organizing Mormon thought might even be a violent act, like cramming a lot of priceless pieces of glass art into a small, unpadded box for shipping. Under such conditions, how could any theologian guarantee that breakage won’t occur?

In Situ Longitudinal Pre-Stretch In The Human Femoropopliteal Artery, Alexey Kamenskiy, Andreas Seas, Grant Bowen, Paul Deegan, Anastasia Desyatova, Nick Bohlim, William Poulson, Jason N. Mactaggart

Department of Mechanical and Materials Engineering: Faculty Publications

In situ longitudinal (axial) pre-stretch (LPS) plays a fundamental role in the mechanics of the femoropopliteal artery (FPA). It conserves energy during pulsation and prevents buckling of the artery during limb movement. We investigated how LPS is affected by demographics and risk factors, and how these patient characteristics associate with the structural and physiologic features of the FPA. LPS was measured in n=148 fresh human FPAs (14–80 years old). Mechanical properties were characterized with biaxial extension and histopathological characteristics were quantified with Verhoeff-Van Gieson Staining. Constitutive modeling was used to calculate physiological stresses and stretches which were then analyzed …

Foliar Fungicide Comparisons For Gray Leaf Spot Management And Lodging In Nebraska Field Corn, 2014, J. D. Harbour, T. A. Jackson-Ziems

Department of Plant Pathology: Faculty Publications

The objective of the trial was to compare foliar fungicides with other fungicide programs for gray leaf spot (GLS) efficacy. Corn was grown under normal, irrigated agronomic practices at the South Central Ag Lab near Clay Center, NE. Soils were a silt loam with 6.7 pH and 1.8 % organic matter, and the previous crop was corn. Reduced tillage was performed to the field prior to planting. Corn (DKC 64-83 RIB, moderately susceptible to GLS) was planted at approximately 34,000 seed/A on 20 May. Eleven treatments were arranged in a randomized complete block design with six replications. . . . …