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Emotion Regulation Is Associated With Peer Victimization Among Children With Attention-Deficit/Hyperactivity Disorder., Nicholas D. Fogleman

Electronic Theses and Dissertations

Background: Children with Attention-Deficit/Hyperactivity Disorder (ADHD) experience higher rates of peer victimization relative to unaffected peers; however, debate remains as to whether core symptoms of ADHD—inattention, hyperactivity and impulsivity—are responsible for increased rates of peer victimization among children with ADHD. Given emotion regulation deficits co-occur among children with ADHD, and are often associated with increased peer victimization experiences, the current study examined the role of emotion regulation in peer victimization among children with ADHD. Methods: Forty-nine children (ages 10-15 years) diagnosed with ADHD and their parents completed measures of emotion regulation and peer victimization. Children also completed a laboratory-based peer …

Novel Bayesian Methodology In Multivariate Problems., Debamita Kundu

Electronic Theses and Dissertations

This dissertation involves developing novel Bayesian methodology for multivariate problems. In particular, it focuses on two contexts: shrinkage based variable selection in multivariate regression and simultaneous covariance estimation of multiple groups. Both these projects are centered around fully Bayesian inference schemes based on hierarchical modeling to capture context-specific features of the data and the development of computationally efficient estimation algorithm. Variable selection over a potentially large set of covariates in a linear model is quite popular. In the Bayesian context, common prior choices can lead to a posterior expectation of the regression coefficients that is a sparse (or nearly sparse) …

Queering Black Greek-Lettered Fraternities, Masculinity And Manhood : A Queer Of Color Critique Of Institutionality In Higher Education., Antron Demel Mahoney

Electronic Theses and Dissertations

Drawing heavily on Roderick Ferguson’s (2012) theory of institutionality, this dissertation constructs a counter-historical genealogy of racialized gender in higher education and U.S. society through the formation of black Greek-lettered fraternities. Ferguson argues that with the insurgence of minority resistance globally and domestically during the mid-twentieth century, hegemonic power took a new form. Instead of rejecting minority difference, power’s new network attempted to work through and with minority difference in an effort to absorb and restrict these radical formations within state, capital and academy frameworks—producing narrow or one-dimensional minority subjectivities. Established at the turn of the twentieth century, black Greek-lettered …

The Conceptualization Of The Positive Cognitive Triad And Associations With Depressive Symptoms In Adolescents., Caroline M. Pittard

Electronic Theses and Dissertations

Depressive symptoms during adolescence have been found to be associated with negative outcomes such as decreased academic performance, absenteeism, substance abuse, and poor physical health. The positive cognitive triad has been considered to be a protective factor against adolescent depressive symptoms. The positive cognitive triad is made up of three subfactors of cognitions, specifically, positive cognitions about the self, the world, and the future. This dissertation examined the various conceptualizations of the positive cognitive triad and their relation to depressive symptoms. These conceptualizations included considering the positive cognitive triad as a single overall protective factor (additive model), as multiple possible …

Improving Flow-Induced Hemolysis Prediction Models., Mohammad Mohaghegh Faghih

Electronic Theses and Dissertations

Partial or complete failure of red blood cell membrane, also known as hemolysis, is a persistent issue with almost all blood contacting devices. Many experimental and theoretical contributions over the last few decades have increased insight into the mechanisms of mechanical hemolysis in both laminar and turbulent flow regimes, with the ultimate goal of developing a comprehensive, mechanistic and universal hemolysis prediction model. My research is broadly divided into two sections: theoretical/analytical/Computational Fluid Dynamics (CFD) analyses and experimental tests. The first part of my research revolved entirely around analyzing the simplest and most popular hemolysis model, commonly called as the …

Allee Effects Introduced By Density Dependent Phenology., Timothy James Pervenecki

Electronic Theses and Dissertations

We consider both the nonspatial model and spatial model of a species that gives birth to eggs at the end of the year. It is assumed that the timing of emergence from eggs is controled by phenology, which is density dependent. In general, the solution maps for our models are implicit; When the solution map is explicit, it is extremely complex and it is easier to work with the implicit map. We derive integral conditions for which the nonspatial model exhibits strong Allee effect. We also provide a necessary condition and a sufficient condition for the existence of positive equilibrium …

Wyandot, Shawnee, And African American Resistance To Slavery In Ohio And Kansas, Diane Miller

Department of History: Dissertations, Theses, and Student Research

From the colonial period, enslaved Africans escaped bondage. Colonial records and treaties reveal that they often sought refuge with Indian tribes. This resistance to slavery through escape and flight constituted the Underground Railroad. As European colonies developed into the United States, alliances of subaltern groups posed a threat. Colonizers and settlers aimed to divide and control these groups and arrived at the intertwined public policies of African chattel slavery and Indian removal. Tribal abolitionism and participation in the Underground Railroad was more pronounced than scholars have recognized and constituted an important challenge to the expansion of slavery.

Encounters between fugitive …

Is This What You Wanted?: Expectations, Choice, And Rhetorical Agency In Composition, Caitlin C. Leibman

Department of English: Dissertations, Theses, and Student Research

Choices are a given in rhetorical education, but composition has not given enough attention to the relationship between choices and students’ experiences of rhetorical agency. This dissertation uses expectations as an entry point and choices as a unit of analysis to explore how students navigate and understand their decision-making processes during a single composition project. Drawing from activity theory, this study analyzes classroom data including drafts, author’s notes, and peer response materials as well as student interview data and writing center consultation transcripts. This dynamic approach allows for an exploration of the messiness of the process, creating a portrait of …

Drought Impacts Assessment In Brazil: A Remote Sensing Approach, Denis Mariano

School of Natural Resources: Dissertations, Theses, and Student Research

Climate extremes are becoming more frequent in Brazil; studies project an increase in drought occurrences in many regions of the country. In the south, drought events lead to crop yield losses affecting the value chain and, therefore, the local economy. In the northeast, extended periods of drought lead to potential land degradation, affecting the livelihood and hindering local development. In the southern Amazon, an area that experienced intense land use change (LUC) in the last, the impacts are even more complex, ranging from crop yield loss and forest resilience loss, affecting ecosystem health and putting a threat on the native …

Regime Detection Measures For The Practical Ecologist, Jessica L. Burnett

School of Natural Resources: Dissertations, Theses, and Student Research

Forecasting undesirable change is, arguably, the holy grail of ecology. Paired with an understanding of system interactions, a forecast is ideal if it provides reliable predictions in sufficient time to prevent or mitigate unwanted systemic change. Early warning systems (or early warning signals, early warning indicators) have been developed and tested for some ecological systems data, but have been mostly applied to marine fisheries time series and nutrient loadings in shallow lakes. Despite the numerous quantitative methods proposed for identifying or forecasting regime shifts in ecological data, few are used in practice. This dissertation contributes to our understanding of the …

Nitrate Removal And Placement Of Floating Treatment Wetlands In The Midwest, Mary G. Keilhauer

School of Natural Resources: Dissertations, Theses, and Student Research

The Midwestern United States is vulnerable to eutrophic conditions from high nutrient concentrations. Recommendations for nonpoint source pollution management include runoff treatment (i.e., filter strips, riparian buffers) and in-situ lake treatment practices (i.e., aluminum sulfate (alum) treatments, aeration, up/downdraft pumping, floating treatment wetlands). Floating treatment wetlands (FTWs) are an innovative wetland design for nutrient removal from nonpoint sources and provide a unique in-situ treatment. Best management practice studies have commonly focused on adjacent to water practices, which have resulted in a gap for guidance for in-situ treatment placement and design. Therefore, the objectives of this project were to (1) Quantify …

Optimal Design For A Causal Structure, Zaher Kmail

Department of Statistics: Dissertations, Theses, and Student Research

Linear models and mixed models are important statistical tools. But in many natural phenomena, there is more than one endogenous variable involved and these variables are related in a sophisticated way. Structural Equation Modeling (SEM) is often used to model the complex relationships between the endogenous and exogenous variables. It was first implemented in research to estimate the strength and direction of direct and indirect effects among variables and to measure the relative magnitude of each causal factor.

Historically, traditional optimal design theory focuses on univariate linear, nonlinear, and mixed models. There is no current literature on the subject of …

Creating A “Good” Olmstead Plan For People With Serious Mental Illness: An Empirical Evaluation Of The Legal Frameworks, Andrea Avila

Department of Psychology: Dissertations, Theses, and Student Research

Olmstead v. L.C. ex rel Zimring (1999) was a landmark US Supreme Court decision holding that unjustified segregation of people with disabilities is impermissible discrimination; specifically, if the clinician and client believe community integration to be appropriate, the state must have reasonable accommodations in place for the client to be in the community. Enforcement of the Olmstead decision for people with serious mental illness has taken many shapes, from the DOJ’s settlement agreements requiring substantive development of community mental health services and aggressive community integration protocols, to the Third Circuit approach which requires only lower census numbers in the state …

Environmental Sampling Techniques For Herd-Level Surveillance Of Bovine Viral Diarrhea Virus, Jaden Carlson

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

Control of Bovine Viral Diarrhea Virus (BVDV) relies on resource-intensive individual animal sampling to detect and remove persistently infected (PI) cattle. Herd-level surveillance tools would be useful for herds with unknown BVDV status and for monitoring herds with BVDV-free status. The overall objective of this thesis is to explore the viability of BVDV surveillance at a herd-level using samples collected without handling individual animals. The first objective was to determine the feasibility of using stable flies as a sampling tool to detect BVDV. The second objective was to determine the feasibility of using drinking water to detect BVDV. To accomplish …

Inhibitory Effects Of Shiitake-Derived Exosome-Like Nanoparticles On Nlrp3 Inflammasome Activation, Yizhu Lu

Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research

The NLRP3 inflammasome is a critical mediator of inflammation and consists of the sensor NOD-like receptor family, pyrin domain containing 3 (NLRP3), the adaptor apoptotic speck protein containing a caspase recruitment domain (ASC), and the effector caspase-1. Dysregulated or excessive activation of the NLRP3 inflammasome contributes to pathogenesis of diverse inflammatory diseases such as Type 2 diabetes and atherosclerosis. Therefore, the NLRP3 inflammasome is a promising therapeutic target for treating these diseases. Extracellular vesicles (EVs) are membrane-enclosed tiny particles released by almost any type of cells and they are involved in the intercellular communication by transferring their cargos including RNAs, …

Transport And Distribution Of Bovine Milk Exosomes And Mir-34a Cargo In Murine Cerebral Cortex Endothelial Bend.3 Cells And Bv2 Microglia, Pearl Ebea

Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research

The blood-brain barrier (BBB) poses an obstacle in the delivery of drugs to the brain. Bovine milk exosomes (BME) are explored for delivering antisense oligonucleotides to tumors, because BME are bioavailable and protect RNA cargos against degradation in the gastrointestinal tract. This study had the following objectives: 1) assess the transport kinetics of BME and their RNA cargos and secretion of RNA across the apical membrane in murine cerebral cortex endothelial bEnd.3 cells and 2) determine whether murine brain BV2 microglia have the potential to accumulate and, therefore, eliminate BME that crossed the BBB. The uptake of BME labeled with …

Assessing The Agronomic And Ecological Relevance Of Mineral-Associated Organic Matter, Andrea Jilling

Doctoral Dissertations

As the largest terrestrial sink for carbon (C) and a critical source of nitrogen (N) for plants, soil organic matter (SOM) is a major driver of ecosystem function. It is critical to understand the mechanistic controls on SOM in order to improve models of global C cycling and to develop accurate measures of soil fertility. SOM consists of a wide spectrum of compounds, varying in chemical characteristics and function. The chemical and physical fractionation of SOM is a valuable tool for distilling this complexity into meaningful and distinct pools: detrital or particulate organic matter (POM), which contains mostly recent litter …

The Bioaccumulation Of Cyanotoxins In Aquatic Food Webs, Amanda Lee Murby Mcquaid

Doctoral Dissertations

Cyanobacteria are naturally occurring photosynthetic bacteria, ubiquitous in nature. Increases in temperature and nutrients have supported the proliferation of cyanobacterial growth globally, especially in freshwater systems. Many taxa can produce biotoxins referred to as “cyanotoxins”. While toxic cyanobacteria are a growing public health concern, little is known about the accumulation of cyanotoxins in lake food webs. This research investigates the seasonal occurrence and the potential role of toxic cyanobacteria in two lakes of contrasting water qualities and food web structures. Objectives of this study were to test the bioaccumulation of microcystins (MCs) and beta-methyl-alanine-amino acid (BMAA) in zooplankton. I further …

Long-Term Forest Growth And Decadal Soil Chemistry Change Across The White Mountain National Forest, Olivia L. Fraser

Doctoral Dissertations

Forest ecosystems are subject to a variety of stressors including human land use, air pollution and climate change. A challenge for detecting temporal change, however, is disentangling heterogeneity at multiple spatial scales. Therefore, we need a better understanding of the mechanisms influencing forest growth and soil formation, how to improve existing long-term sample designs, and quantify variability at multiple spatial scales. Identifying the areal extent of bedrock outcrops and shallow soils has important implications in understanding the spatial dynamics of surrounding vegetation, stream chemistry gradients, and soil properties. Manual methods of delineating bedrock outcrops and associated shallow soil are still …

Molecular Diet Analyses Of North American Bats, Devon O'Rourke

Doctoral Dissertations

A food web is a model of the feeding relationships among organisms in an environment. The fidelity of this model is limited principally by the ability to detect these interactions. Researchers who study cryptic interactions such as nocturnal insectivory in bats typically rely on fecal samples to identify trophic connections. Historically these diet analyses were limited to morphological inspection of arthropod fragments, however modern metabarcoding techniques have improved the richness and specificity of consumed prey: rather than bats foraging for a few arthropod orders, we observe hundreds of species among guano samples. Animal metabarcoding is not without bias; nevertheless, a …

Striped Bass Strain Effects On Aquaculture Performance Traits, Stress Responsiveness And Hybrid Offspring Growth, Linas Kenter

Doctoral Dissertations

Striped bass (Morone saxatilis) and their hybrids have been well studied and are widely cultured as a food and gamefish. Recent increases in striped bass aquaculture have generated interest in domestication programs where growth performance and stress tolerance are among the traits of interest. Unique geographic stocks, or strains have previously been identified and these populations will presumably exhibit distinct culture traits across different environments. Before application of genetic principles, domestication programs should begin by evaluating available strains for superior performance in the environments intended to be utilized during culture. In this effort, a series of experiments were conducted to …

Mammals On Mountainsides Revisited: Analyzing Multiple Dimensions Of Diversity To Gain New Insight On Community Assembly And Biogeography, Brooks Kohli

Doctoral Dissertations

Understanding how biodiversity is distributed, maintained, and altered is a fundamental goal of ecology and is especially important for predicting the effects of ongoing rapid environmental change. Traditionally, diversity has been described in taxonomic terms using the number and abundance of species (e.g., species richness). However, biodiversity is multi-faceted and includes functional (ecological traits) and phylogenetic (evolutionary relationships) dimensions that emphasize the similarities and differences among species. Functional diversity is particularly appealing because it quantifies the range and prevalence of traits in an assemblage and helps link patterns of diversity to the ecological processes that generate them. I used a …

Advancing The Terrestrial Ecological Unit Inventory Within The White Mountain National Forest Using Lidar, Robert Andrew Colter

Doctoral Dissertations

Forest land managers need ecological classification to assess and describe resource conditions, vegetation conditions, outcomes resulting from various management prescription scenarios, and communicate environmental effects of land management planning alternatives. However, there is a need to incorporate more ecological classification into the land management plans. The U.S. Forest Service’s approach, the Terrestrial Ecological Unit Inventory (TEUI), relies heavily on field data collection and verification of map unit delineations that is time-consuming and costly. Traditional mapping methods far exceed the current financial capacity of the U.S. Forest Service. In order to justify new ecological classification mapping approaches, there needs to be …

Hydrodynamic Drivers Of Dissolved Oxygen Variability Within A Tidal Creek In Myrtle Beach, South Carolina, Douglas M. Pastore, Richard N. Peterson, Diane B. Fribance, Richard Viso, Erin E. Hackett

Marine Science

Beach erosion and water quality degradation have been observed in Singleton Swash, a tidal creek that traverses the beach-face connecting land and ocean in Myrtle Beach, SC. The objective of this study in Singleton Swash is to explore relationships between water quality and hydrodynamics, where the latter are influenced by beach face morphology. We measure water velocities, water levels, and dissolved oxygen concentrations (DO) (a proxy for water quality) and apply correlation analysis to examine the relationships between physical processes and dissolved oxygen variations. Results show that larger tidal ranges are associated with higher mean levels of DO in the …

Mechanism Of By Product Formation From Different Water Matrices By Chlorination And Chloramination, Victoria Jane Hawkes

Master's Theses and Capstones

Application of chlorine-based disinfection to drinking water and wastewater leads to the formation of disinfection by-products that are harmful to human health. This paper presents research performed on the formation mechanisms of trihalomethanes (THMs) and nitrosamines (specifically NDMA) from chlorine-based disinfection practices. The formation of THMs and nitrosamines was investigated under a range of water matrices and disinfection conditions by developing a set of laboratory prepared water matrices containing natural organic matter (NOM), bromide and ammonium. In addition, two pretreated surface waters and one secondary treated wastewater effluent were selected to link experimental results to practice. THMs and nitrosamines were …

Sex And Death On The Western Emigrant Trail: The Biology Of Three American Tragedies, Debra E. L. Martin

Anthropology Faculty Research

This book offers a different look at how to think about the starvation and death that hounded emigrants attempting to get to California and Oregon in the early years of nineteenth-century US expansion. Specifically, the Donner party and two lesser-known Mormon handcart groups are scrutinized for what the patterns of age at death by sex can reveal. In the subtitle The Biology of Three American Tragedies, “biology” here means solely demographic data on sex and age at death. These are really the only biological variables examined, so the title Sex and Death on the Western Emigrant Trail is more accurate …

The Effect Of Distracted Driving On The Conspicuity Of Pedestrians At Night, Ellen Campbell Szubski

All Theses

Between 2008 and 2018, pedestrian fatalities have increased 35 percent in the United States and nighttime fatalities are responsible for a substantial portion of this increase. There are two significant problems that limit drivers' ability to respond to pedestrians at night: the degradation of drivers' visual abilities due to low illumination and the low contrast of pedestrians against the background. Pedestrians can make themselves more visible to nighttime drivers by strategically placing retroreflective material on the major joints of the body to highlight their biological motion (biomotion). However, past research on pedestrian conspicuity has largely focused on drivers who are …

Climate Change And Chagas Disease In The Americas: A Qualitative Systematic Review, Brittany N. Graves

Dissertations and Theses (Open Access)

While many studies have found associations between climate change and factors affecting Chagas disease transmission, the future impact of climate change on the global spread of Chagas disease remains debatable. A qualitative, systematic review was conducted to assess the impact of climate change on Chagas disease transmission in the Americas (Central America, South America, and North America). The literature search was performed in January 2019 using the keywords climate, Chagas, and “trypanosoma cruzi” and the electronic databases PubMed, Scopus, and Ovid. Searches retrieved records from 1982 through 2019. The initial electronic database search identified a total of 191 record documents …

Uses Of Continuous-Time Markov Chain To Describe Longitudinal Patient-Reported Outcomes For Survival Prediction And Dimension Reduction, Ting-Yu Chen

Dissertations and Theses (Open Access)

A patient-reported outcome (PRO) is a type of outcome reported directly from patients, and it has been widely used in medical research and clinical trials to measure a patient’s symptoms, health-related quality of life, physical functioning, and health status. Previous studies have linked PROs to survival outcomes, but most of them only used the PRO information at baseline or at a specific clinical time point [1, 2]. Even though some of these studies collected longitudinal PROs, only few of them evaluated the association between the longitudinal PROs and a survival outcome. One of the major challenges in longitudinal PRO studies …

Hepatitis C Infection In Men Who Have Sex With Men, Jing Zhao

Dissertations and Theses (Open Access)

Hepatitis C virus (HCV) infection is the leading cause of cirrhosis, hepatocellular carcinoma, and liver transplantation. Current treatment rates and efficacy are inadequate to manage the disease burden caused by HCV; thus, efforts are needed to control HCV transmission. Besides the well-known transmission routes, which are health-care-associated transmission and transmission through injecting drugs, HCV could also be transmitted by sexual contact, especially among men having sex with men (MSM). MSM also have higher drug use prevalence than the general population, which may contribute to HCV infection by sexual disinhibition and other risky behavior. Since 2000, there have been emerging reports …