Digital Commons Network^™

Assessing Changes In Freshwater And Marine Food Web Connections Following Restoration On The Penobscot River, Maine, Using Stable Isotope Analysis, Matthew Brewer Ms

Student Scholarship

Oiadromous fish provide ecological subsidies to freshwater and marine food

webs, connecting both ecosystems. A main goal of the Penobscot River Restoration

Project was to increase connectivity between food webs by removing two mainstem

dams, improving fish passage, and reintroducing river herring through stocking.

Oiadromous fish now reach historic spawning habitat that was not accessible for

centuries. As a result, river herring runs in the Penobscot River increased from

2,336 fish in 2009 to over 3 million fish by 2018. To assess food web connectivity in

the Penobscot watershed, I analyzed stable isotopes from samples collected before

(2009-2010) and after …

Non-Linear Machine Learning Models Incorporating Snps And Prs Improve Polygenic Prediction In Diverse Human Populations, Michael Elgart, Genevieve Lyons, Santiago Romero-Brufau, Nuzulul Kurniansyah, Jennifer A Brody, Xiuqing Guo, Henry J Lin, Laura Raffield, Yan Gao, Han Chen, Paul De Vries, Donald M Lloyd-Jones, Leslie A Lange, Gina M Peloso, Myriam Fornage, Jerome I Rotter, Stephen S Rich, Alanna C Morrison, Bruce M Psaty, Daniel Levy, Susan Redline, Nhlbi’S Trans-Omics In Precision Medicine (Topmed) Consortium, Tamar Sofer

Faculty, Staff and Student Publications

Polygenic risk scores (PRS) are commonly used to quantify the inherited susceptibility for a trait, yet they fail to account for non-linear and interaction effects between single nucleotide polymorphisms (SNPs). We address this via a machine learning approach, validated in nine complex phenotypes in a multi-ancestry population. We use an ensemble method of SNP selection followed by gradient boosted trees (XGBoost) to allow for non-linearities and interaction effects. We compare our results to the standard, linear PRS model developed using PRSice, LDpred2, and lassosum2. Combining a PRS as a feature in an XGBoost model results in a relative increase in …

New Faculty, 2022-2023, University Of Mississippi. Provost

New Faculty

No abstract provided.

Examining The Gay Panic Defense With An Experimental Design, Annika I. Wurm

Psychology and Counseling Theses

The gay panic defense (GPD) is a type of provocation defense used in criminal trials for the purpose of mitigating a defendant’s culpability to a jury. The current study utilized chi-square tests and logistic regression to investigate the effects of the GPD on jury decision-making and to assess potential associations of personal characteristics of jurors on verdict selection. Contrary to hypotheses, testing resulted in null findings. Limitations, as well as study strengths, are discussed. Findings suggest that methodology and case details may be pertinent in the empirical investigation of the GPD.

Impacts Of Drugs On Neurotransmission, Wenrong He

Theses

The most sophisticated and mysterious human organ is the brain. The human brain is made up of billions of neurons, which are working nonstop to send and receive messages to regulate the body’s basic functions. Neurons communicate by releasing neurotransmitters from a sending neuron into the synapse, then a receiving neuron picks up the signals on its receptors from neurotransmitters. Drugs can interfere with the communication between neurons in the brain. They can affect the way people feel, react or behave. Drug use impacts the brain’s neuronal circuits which may lead to inflexible behaviors, lack of self-control, and compulsive drug …

Mutational Analyses Of The Cysteine-Rich Domain Of Yvh1, A Protein Required For Translational Competency In Yeast, Hannah Zang, Robert Shackelford, Alice Bewley, Alexander E Beeser

2020-Current year OA Pubs

Ribosome assembly is a complex biological process facilitated by >200

Association Between Antidepressant Use And Ed Or Hospital Visits In Outpatients With Sars-Cov-2, Bradley A Fritz, Nicolas Hoertel, Eric J Lenze, Farid Jalali, Angela M Reiersen

2020-Current year OA Pubs

Antidepressants have previously been associated with better outcomes in patients hospitalized with COVID-19, but their effect on clinical deterioration among ambulatory patients has not been fully explored. The objective of this study was to assess whether antidepressant exposure was associated with reduced emergency department (ED) or hospital visits among ambulatory patients with SARS-CoV-2 infection. This retrospective cohort study included adult patients (N = 25 034) with a positive SARS-CoV-2 test performed in a non-hospital setting. Logistic regression analyses tested associations between home use of antidepressant medications and a composite outcome of ED visitation or hospital admission within 30 days. Secondary …

Metabolomics Profiling Of Vitamin D Status In Relation To Dyslipidemia, Hanaa Mousa, Mohamed A. Elrayess, Ilhame Diboun, Simon K. Jackson, Susu M. Zughaier

School of Biomedical Sciences

Vitamin D deficiency is a global disorder associated with several chronic illnesses including dyslipidemia and metabolic syndrome. The impact of this association with both dyslipidemia and vitamin D deficiency on metabolomics profile is not yet fully understood. This study analyses the metabolomics and lipidomic signatures in relation to vitamin D status and dyslipidemia. Metabolomics data were collected from Qatar Biobank database and categorized into four groups based on vitamin D and dyslipidemia status. Metabolomics multivariate analysis was performed using the orthogonal partial least square discriminate analysis (OPLS-DA) whilst linear models were used to assess the per-metabolite association with each of …

Assessing The Current State Of Louisiana's Crawfish Fishery: Trends And Challenges In Wild Capture And Aquaculture, Mahala G. Gambill

LSU Master's Theses

Crawfish are found throughout the southern U.S.; however, Louisiana is by far the largest producer. The state’s industry includes harvesting wild crawfish from natural habitats such as bayous, swamps, and marshes, and crawfish reared in outdoor ponds. Although commercial harvest records are available, characterization of Louisiana’s wild capture crawfish fishery in recent years is undocumented, and analysis of environmental variables that could be correlated with annual harvest totals have not yet been explored. Using trip ticket data from the Louisiana Department of Wildlife and Fisheries, I characterized monthly and annual trends within Louisiana basins to assess changes in crawfish harvest …

Understanding Community Assembly Processes Of Foundation Species Within Hyper-Diverse Ecosystems, Carrie Barker

LSU Doctoral Dissertations

Foundation species provide the structure for other species and can significantly affect the composition and overall diversity within a community. Multiple foundation species can coexist within a community, and each can have differential impacts. My dissertation aims to understand the effects different foundation species have on diversity and the community assembly processes responsible for structuring diversity within their respective communities.

First, I quantified the diversity of groundcover plants within the prominent foundation species, bunchgrasses, (dominated by Shizachyrium scoparium) compared to groundcover plant diversity within patches of the alternative foundation species bracken fern (Pteridium aquilinum) and gallberry ( …

The Influence Of Selected Personal And Academic Demographic Characteristics On Persistence To Degree Completion Among Traditional-Age Undergraduate Students At A Research University In The Southeastern United States, Michael Eugene Mckey Jr.

LSU Doctoral Dissertations

A college education has never been more important than it is today. With nearly two-thirds of jobs in the future requiring some form of advanced education, and approximately one-third of those requiring a bachelor’s degree, it is imperative that research be undertaken to address the factors that contribute to the success of students in college, more so regarding the persistence and retention of those students. Therefore, the purpose of this study was to determine the influence of selected personal and academic demographic characteristics on the persistence to graduation, specifically, within six years. A causal-comparative research design was used as the …

Immunohistochemical Detection And Prognostic Significance Of P53, Epidermal Growth Factor Receptor, Murine Double Minute 2, And Isocitrate Dehydrogenase 1 In Glioblastoma Multiforme Patients Of Pakistan, Syed Muhammad Adnan Ali, Muhammad Shahzad Shamim, Syed Ather Enam, Zubair Ahmad, Yumna Adnan, Hasnain Ahmed Farooqui

Department of Surgery Docs

Introduction: Glioblastoma multiforme (GBM) is one of the deadliest cranial tumors occurring in adults. Various biomarkers have been tested for their significance in diagnosis, prognosis, and treatment of GBM. Some well-studied markers in GBM are Isocitrate dehydrogenase 1 (IDH1), Murine double minute 2 (MDM2), Epidermal Growth Factor Receptor (EGFR), and p53. The aim of this study was to investigate the protein expression of these markers in GBM patients of Pakistan.
Methods: A total of 102 surgically resected formalin-fixed paraffin-embedded specimens from patients diagnosed and treated at Aga Khan University Hospital were included in this study. Immunohistochemistry (IHC) for IDH1, MDM2, …

أثر استخدام دورة التعلم المعدلة في تنمية مهارات التفكير الناقد والتحصيل في الأحياء لدى الطلبة. The Effect Of Using The Modified Learning Cycle 5 E Strategy On Students Critical Thinking Skills, And Their Biology Achievement, علي مقبل العليمات

Association of Arab Universities Journal for Education and Psychology

هدفت هذه الدراسة إلى استقصاء أثر إستراتيجية دورة التعلم في تنمية مهارات التفكير الناقد لدى طلبة الصف العاشر الأساسي في الأردن وتحصيلهم في الأحياء مقارنة بالطريقة التقليدية في تدريس الأحياء، تكون مجتمع الدراسة من (768) طالباً في الصف العاشر الأساسي في المدارس الحكومية التابعة لمديرية تربية قصبة المفرق للعام الدراسي 2010/2011، وتكونت عينة الدراسة من (81) طالباً في شعبتين من شعب الصف العاشر الأساسي في مدرسة المفرق الأساسية الأولى للبنين، ووزعت هذه الشعب عشوائياً لتشكيل المجموعة التجريبية والمجموعة الضابطة. وقد تم تدريس المجموعة التجريبية الأولى (ن=41) باستخدام دورة التعلم المعدلة، وتم تدريس المجموعة الضابطة (ن=40) باستخدام الطريقة التقليدية.

طبقت الدراسة …

Developing Research Data Management Services In A Regional Comprehensive University: The Case Of Central Washington University, Ping Fu, Maurice Blackson, Maura Valentino

Library Scholarship

This study aims to analyze the needs of researchers in a regional comprehensive university for research data management services; discuss the options for developing a research data management program at the university; and then propose a phased three-year implementation plan for the university libraries. The method was to design a survey to collect information from researchers and assess and evaluate their needs for research data management services. The results show that researchers’ needs in a regional comprehensive university could be quite different from those of researchers in a research-intensive university. Also, the results verify the hypothesis that researchers in the …

Plant And Animal Body-Part Terms In Shiwulu Grammar: Classification, Nominalization, And Incorporation, Pilar M. Valenzuela

World Languages and Cultures Faculty Books and Book Chapters

"The goal of the present study is to offer an account of the principal constructions containing body-part terms in Shiwilu. These involve inanimate classifiers, three lexical nominalizers (instrumental, habitual agent, and resultative), and incorporated nouns and classifiers. While articles have previously been written addressing the Shiwilu system of classifiers and nominal incorporation (Valenzuela 2016, 2019, to appear), this chapter focuses on the role that body-part terms play in the grammar of the language."

Developing Marketing Strategies To Enhance Students’ Perception Of Service Within The Thompson Scholarship Program, Emileigh Kleps

Honors Projects

Understanding the perceptions of Thompson Family Scholars to suggest improvements of marketing strategies within the Thompson Scholarship Program for the benefit of current and future Thompson Family Scholars.

Niche Overlap In Sympatric Rocio (Teleostei: Cichlidae) Of Guatemala, Cesar Estuardo Fuentes Montejo

College of Science and Health Theses and Dissertations

Rocio is a small genus of Neotropical freshwater fishes that is distributed in Atlantic drainages of northern Middle America. Two species in the genus exhibit sympatry in the Río Dulce basin (in Izabal, Guatemala), where one species is endemic (R. spinosissima), while the other only includes this area as part of a larger geographic range (R. octofasciata). Unfortunately, the ecology of these species has been poorly studied. This study sought to determine the ecological and morphological differences between these two closely related sympatric freshwater fishes. We hypothesized that R. octofasciata would exhibit greater ecological and morphological …

Relationship Building In E-Negotiation: Dyadic Effects On Subjective Negotiation Outcomes, Mounica Reddy

College of Science and Health Theses and Dissertations

E-negotiation is a critical activity that is becoming a new reality (Sokolova et al., 2006), however, the e-negotiation environment lends itself to fewer informative cues than the face-to-face environment. The ability to maintain relationships with parties and negotiate with them in the future increases the negotiator’s bargaining power and could be important beyond economic outcomes (Curhan & Brown, 2011). This study investigates the link between relationship-building and subjective values in negotiation, and how the negotiation medium may change this relationship. Subjective values of rapport, trustworthiness, and interest in future interaction were predicted to both differ by e-negotiation and face-to-face negotiation …

Seasonality Of Precipitation In The Southwestern United States During The Late Pleistocene Inferred From Stable Isotopes In Herbivore Tooth Enamel, Matthew J. Kohn, Kathleen B. Springer, Jeffrey S. Pigati, Linda M. Reynard, Amanda E. Drewicz, Justin Crevier, Eric Scott

United States Geological Survey: Staff Publications

The late Pleistocene was a climatically dynamic period, with abrupt shifts between cool-wet and warmdry conditions. Increased effective precipitation supported large pluvial lakes and long-lived spring ecosystems in valleys and basins throughout the western and southwestern U.S., but the source and seasonality of the increased precipitation are debated. Increases in the proportions of C₄/(C₄+ C₃) grasses in the diets of large grazers have been ascribed both to increases in summer precipitation and lower atmospheric CO₂ levels. Here we present stable carbon and oxygen isotope data from tooth enamel of late Pleistocene herbivores recovered …

Temperature Effects On The Development Of The Axial Skeleton And Body Shape In Astyanax Mexicanus (Teleostei: Characidae), Joseph David Forberg

College of Science and Health Theses and Dissertations

Humans are causing large-scale changes in environmental conditions across the planet including in temperature. Changes in the environmental conditions can lead to phenotypic changes in ectotherms that affect adaptively important traits like body shape and the axial skeleton. Previous studies have shown that temperature changes during development significantly affects body shape and vertebral number in the Mexican tetra Astyanax mexicanus. How these changes arise early in development is not clear. In this study, I examine how changes in developmental temperature affect body shape in larval and juvenile fish, the order of ossification of elements of the axial skeleton, the size …

Characterization Of A Stenotrophomonas Maltophilia Bacteriophage, Edward Eshoo

College of Science and Health Theses and Dissertations

Stenotrophomonas maltophilia is a ubiquitous Gram-negative, multidrug resistant, opportunistic bacterial pathogen that causes various infections in humans. Recently, the use of bacteriophages as therapeutic agents, has gained interest as an alternative to traditional antibiotics. This thesis describes the isolation, purification, and characterization of S. maltophilia bacteriophage Bfi2 and discusses its activity against related, and often co-isolated, bacterial pathogens. Amplification of the phage resulted in clear, well-defined plaques and a titer of 1.73 ± 0.38 x 1011 PFU/ml. Bfi2 demonstrated the ability to lyse 55% of the S. maltophilia strains tested, suggesting that it has a moderate host range. However, the …

A Longitudinal Analysis Of The Impact Of Daily Hassles, Life Stressors, And Chronic Medical Conditions On Salivary Alpha Amylase In Young Adults, Anjana Jagpal

College of Science and Health Theses and Dissertations

Young adulthood is a critical point of transition accompanied by a number of different stressors. Exposure to a stressor activates two systems – the hypothalamic pituitary axis (HPA) and sympathetic adrenal medullary (SAM) system. Research has primarily examined HPA axis and its corresponding stress hormone, salivary cortisol with little attention on sympathetic nervous system (SNS) markers. However, emerging research has proposed salivary alpha amylase (sAA) as a potential surrogate for SNS activity. The existing neuroendocrine research on sAA has largely focused on acute stressors and it is important to understand how sAA behaves in response to different levels of stressors …

Black Adolescent Self-Perceptions: The Roles Of Ethnic Identity And Stress Exposure, Kailyn Bare

College of Science and Health Theses and Dissertations

The effects of stressors during youth and adolescence have long been investigated as powerful experiences affecting adjustment and well-being. Stressful life events predict a range of psychological and physical outcomes, but their impact on adolescent self-perception has yet to be studied thoroughly. Adolescent strengths, such as ethnic identity, may serve as protection from threats and warrant exploration. Using resilience theory (Fergus & Zimmerman, 2005) and a stressor model of adolescent development (Grant et al., 2003), this study examines the influence of ethnic identity in the relationship between youth stressful experiences and different types of self-perception (social competence, behavioral conduct, and …

Between Memory And Invention An Interview With Nietq Sobejano Arquitectos, Luis Sacristán Murga

IntAR Interventions Adaptive Reuse

No abstract provided.

Going Dutch Duplication, Authencity And Reprogrammed Experience, Iris Mach

IntAR Interventions Adaptive Reuse

No abstract provided.

Million Donkey Hotel And Other Memories Of Stone, Michela Bassanelli

IntAR Interventions Adaptive Reuse

No abstract provided.

A Future Of Pilgrimage, Andy Lockyer

IntAR Interventions Adaptive Reuse

No abstract provided.

Alternate Hospitality A New Frontier, Tiziano Aglieri Rinella

IntAR Interventions Adaptive Reuse

No abstract provided.

Bikini Berlin Becoming An Icon Of Post-War Reconstruction, Dionys Ottl

IntAR Interventions Adaptive Reuse

No abstract provided.

More Of Something Else Conjecture One-Thirty (Tu), Jeffry Burchard

IntAR Interventions Adaptive Reuse

No abstract provided.