Digital Commons Network^™

A Case Study Of Police Use Of Force On Juveniles In A Southeastern Police Department, Kayce Lowe

Master's Theses

Officer characteristics, situational factors, and organizational factors are common predictors in identifying and explaining police use of force (Friedrich, 1980). While these domains are important, the separation of juveniles in use of force studies is an essential component that is lacking in most use of force literature today. Some studies unintentionally imply that adults and juveniles present the same predictors of force by this lack of separation. Age, specifically the status of juveniles and adults, is not a common predictor of police use of force; however, it is one of the most influential factors in shaping a police officer’s decision-making …

Acute Cardiovascular Response To Low-Load Unilateral, Bilateral, And Alternating Resistance Exercise With Blood Flow Restriction In The Lower Body, Daphney Stanford

Master's Theses

Resistance exercise with blood flow restriction (BFR) has been suggested to exaggerate the exercise pressor response over traditional non-BFR exercise. While applying BFR relative to an individual’s arterial occlusion pressure (AOP) and exercising at low-loads seems to produce a comparable cardiovascular response to traditional moderate or high-load training, it is beneficial to identify modifications for reducing the cardiovascular response to BFR exercise. PURPOSE: To determine if unilateral (UNI), bilateral (BI), or alternating (ALT) exercise modalities elicit different cardiovascular responses during BFR exercise. METHODS: 18 participants (13 male and 5 female) performed four sets of UNI, BI, and ALT knee-extensions at …

The Effects Of Aqueous Atorvastatin On Steroidogenesis Of Xenopus Laevis At Environmentally Relevant Concentrations, Jeremy Johnson

Master's Theses

Statin drugs are a class of drug that work to reduce endogenous production of cholesterol by competitively inhibiting 3-hydroxy-3-methyl-glutaryl-CoA reductase (Hmgcr) thus inhibiting production of mevalonic acid in the mevalonate pathway. Atorvastatin (Lipitor) is one of the most widely prescribed statin drugs and contamination of wastewater effluent is a growing environmental concern because of the potential to interfere with steroidogenesis in wildlife. Amphibians may be particularly susceptible to the effects of atorvastatin contamination because of their highly permeable integument. I used an amphibian model, Xenopus laevis to test the hypothesis that chronic exposure to low concentrations of atorvastatin …

Extended-Range Oscillations And The First Sharp Diffraction Peak In Amorphous Silicon: A Systematic Study, Devilal Dahal

Master's Theses

The first sharp diffraction peak (FSDP), which characterizes the static structure factor of many glassy systems near the wave vector region of 1-2 Å^-1 has been observed depending on the temperature, pressure and the degree of annealing of the system. The presence of the FSDP is indicative of the intermediate range order (IRO). In current work, we study the role of the extended- range oscillations on the parameters of the FSDP, i.e., intensity, position, area, and the full width at half maximum (FWHM) by using high-quality simulated models of amorphous silicon. The radial distance up to half of the …

Their Culture Against Them: The Assimilation Of Native American Children Through Progressive Education, 1930-1960s, Jamie Henton

Master's Theses

The failure of the Bureau of Indian Affairs (BIA) to successfully assimilate Native Americans, especially Native children through education tactics such as boarding schools, led to a shift in the mid-twentieth century for pro-Indian reform. From the 1930s through the 1950s, BIA education reformers pursued progressive education. They imagined progressive education would allow the BIA to use Native American traditions and culture to educate and mold Native students into modern contributing American citizens. To appeal to students, the BIA commissioned a series of educational materials, primarily children’s books, designed to use Native culture to teach children how to adapt to …

Krylov Subspace Spectral Methods With Non-Homogenous Boundary Conditions, Abbie Hendley

Master's Theses

For this thesis, Krylov Subspace Spectral (KSS) methods, developed by Dr. James Lambers, will be used to solve a one-dimensional, heat equation with non-homogenous boundary conditions. While current methods such as Finite Difference are able to carry out these computations efficiently, their accuracy and scalability can be improved. We will solve the heat equation in one-dimension with two cases to observe the behaviors of the errors using KSS methods. The first case will implement KSS methods with trigonometric initial conditions, then another case where the initial conditions are polynomial functions. We will also look at both the time-independent and time-dependent …

The Evolutionary Diversity And Biological Function Of Phenazine Metabolite Biosynthesis In Burkholderia Spp, Samuel Hendry

Master's Theses

Burkholderia encompass a group of ubiquitous Gram-negative bacteria that include numerous saprophytes, as well as several species that cause infections in animals, immunocompromised patients, and plants. Some species of Burkholderia produce colored redox-active secondary metabolites called phenazines (Phz). In the model opportunistic pathogen Pseudomonas aeruginosa, phenazines strongly contribute to the competitiveness, formation of biofilms, and virulence in multiple models of infection. Similar depth of knowledge on the diversity, biosynthesis, and biological functions of phenazines in Burkholderiais missing. This project aimed to bridge this gap in knowledge by focusing on phenazine pathways of B. lata and closely related …

Werewolves: A Three-Dimensional Content Analysis Of Films From 1980-2014, Jennifer Lewis

Master's Theses

WEREWOLVES: A THREE-DIMENSIONAL CONTENT ANALYSIS OF FILMS FROM 1980 – 2014 revolves around how monsters function in stories. Monsters represent fears and teach social norms. They are often portrayed as “other”, but more recently the werewolf has appeared in media as more sympathetic (Brannon 2016, 21; Gilmore 2008, 362; Hughes 2009, 97). Limited research has systematically studied how werewolves are represented in the media. This content analysis focuses on how major werewolf characters are represented in 20 films.

The analysis showcases werewolf characters in today’s culture and what it means to be a monster by analyzing hybridity. This study presents …

Influence Of Varying Inorganic Nutrients Supply On Ergosterol And Glucosamine Concentrations And Biomass Nutrient Stoichiometry In Ectomycorrhizal Fungi, Stephanie S. Koury

Master's Theses

Ectomycorrhizal (ECM) fungi are critical for the health of forest ecosystems where they can sequester large amounts of carbon in the form of soil organic matter, a matter of growing interest due to anthropogenic climate change. A clear understanding of their growth dynamics and responses to environmental changes is imperative for future work in forest management and the possible mitigation of increased atmospheric CO₂. Six ECM fungal species were grown in liquid culture under varying nitrogen and phosphorus concentrations and ratios to assess how exogenous nutrient supplies affect fungal biomass stoichiometry and the degree of elemental homeostasis. Additional …

The Ecology And Evolution Of The Freshwater Turtles Of Southern Mississippi, Gabrielle Berry

Master's Theses

Turtles are one of the most threatened group of animals in existence today. The Southeastern United States is one of two global biodiversity hotspots for turtle species, including the state of Mississippi, where over 30 species can be found. However, very few studies have occurred within the state. This lack of research is even more startling given the ongoing decline, or even extirpation, of numerous turtle species across the world, due to a number of factors, including habitat degradation, and harvest for food or the pet trade.

The overarching goal of this project was to perform a species inclusive freshwater …

Vocal Response Of Bottlenose Dolphins (Tursiops Truncatus) To A Novel Stimulus, Lindsey Johnson

Master's Theses

Bottlenose dolphins utilize acoustic signals as their primary mode of communication. Although some aspects of dolphin vocal behavior are well understood, less is known about vocalizations in different behavioral contexts and how these vocal behaviors may indicate habituation and sensitization. The focus of this study was to investigate how bottlenose dolphins respond vocally to a novel stimulus. Archival data from three populations of bottlenose dolphins (N = 20) living in a human-care facility were exposed to a novel apparatus (a mirror) for 10 trials, each lasting 20 minutes. Five of the trials presented the mirror covered with an opaque …

Multiple Species Of Distinctiveness In Memory: Separating Task Distinctiveness From Statistical Distinctiveness, Matthew Robert Gretz

Master's Theses

Distinctiveness refers to the memorial benefit of processing unique or item-specific features of a memory set relative to a non-distinctive control. Traditional distinctiveness effects are accounted for based on qualitative differences in how distinctive items are encoded at the time of study. This thesis project aims to evaluate whether a different species of distinctiveness—statistical distinctiveness—may provide a separate contribution to memory beyond traditional encoding-based processes. Statistical distinctiveness refers to the relative frequency with which a specific memory item or set is processed. The current study evaluated statistical distinctiveness through a series of mixed groups in which DRM lists were studied …

Effects Of Light And Macroinvertebrate Consumers On Detrital Microbial Biofilms In Streams, Cheyenne M. Brady

Master's Theses

In lotic freshwater systems, aquatic macroinvertebrates are key processors of biofilms that grow upon organic matter. Although macroinvertebrate effects on biofilms may depend on light availability, the combined effects of consumers and light remain unexplored. Here, I conducted experiments to test effects of presence/absence of the omnivorous shrimp Macrobrachium ohione and the shredding caddisfly Pycnopsyche sp. on Liriodendron tulipifera litter biofilms in experimental streams under light or darkness. I measured litter-associated algal, fungal and bacterial biomasses and production rates, as well as litter decomposition, over 49 days. Both experiments exhibited significant positive effects of light on algal productivity and interactions …

Influence Of Salt Marsh Vegetation On Carbon Cycling And Microbial Communities, Aidan Barry

Master's Theses

No abstract provided.

Evaluation Of Commercial Protective Cultures For The Control Of Listeria Monocytogenes And Shiga Toxin-Producing Escherichia Coli In Raw Milk Cheese, Catherine Gensler

Master's Theses

No abstract provided.

A Comparison Of Six Dif Detection Methods, Xueying Gao

Master's Theses

In the context of educational measurement, a test item is identified as differentially functioning across groups when the probability an examinee’s response to it depends on group membership. Methods for detecting uniform and nonuniform DIF have been studied and examined over decades to improve the validity of tests. The current study focused on examining and comparing the effectiveness of six DIF detection methods: the Mantel-Haenszel (MH) procedure, the Logistic Regression procedure, the multiple indicators multiple causes (MIMIC) model, the item response theory likelihood-ratio test (IRT-LR), Lord’s IRT-based Wald test and a Randomization Test based on a R-square change statistic. A …

Changing Salt Marsh Vegetation: Implications For Denitrification, Sean Khan Ooi

Master's Theses

Salt marsh vegetation zones are good indicators of soil conditions and will shift in response to large-scale changes to their environment such as sea-level rise and restoration activities. The goal of our study was to characterize the relationship between soil denitrification potential and salt marsh vegetation zones in tidally restored and unrestricted coastal marshes, and to use vegetation zones to predict how sea-level rise may influence landscape-scale denitrification. We conducted denitrification enzyme activity assays (DEA) on sediment collected from 20 salt marshes across Connecticut and found denitrification potential to be 7 and 17 times lower in short-form Spartina alterniflora zones …

Persistence Of Pesticide Residues And Assessing Organic, Pesticide-Free And Conventional Management Strategies On Home Lawns And Athletic Fields, Garrett Maxey

Master's Theses

The use of pesticides on home lawns and athletic fields is often a contentious issue due to concerns regarding human exposure and subsequent negative health impacts. Three studies are presented to; 1) evaluate different management regimes for home lawns and athletic fields, 2) assess overseeding strategies for non-irrigated, pesticide-free sports fields and 3) quantify the persistence of dislodgeable, foliar residue of four commonly used herbicidal active ingredients. Results of the home lawn and athletic field management studies indicate that treatments utilizing synthetic pesticides had significantly fewer weeds compared to organic and pesticide-free treatments. However, when averaged across years and season, …

Nutrition, Physical Activity, And Screen Time -Related Attitudes And Perceived Barriers Of Family Childcare Providers And Differences By Ethnicity, Qianxia Jiang

Master's Theses

Background:Childcare settings play an important role in shaping young children’s eating, physical activity (PA), and screen time (ST) behaviors. However, little research has focused on family childcare homes (FCCHs). This paper examines family child care provider (FCCP)-reported attitudes and perceived barriers related to nutrition, PA, and ST of preschool aged children in their FCCH, exploring differences by provider ethnicity.

Methods:We used baseline data from an ongoing cluster-randomized trial including surveys with FCCPs. We examined demographic characteristics and provider-reported nutrition, PA, and ST-related attitudes and barriers. Differences by ethnicity were assessed using chi square and multivariate loglinear analysis adjusting …

Meta-Research Of Periodontal Clinical Trials, Khadijeh Al-Abedalla

Master's Theses

No abstract provided.

Proportion Of Mb2 Canals Identified At Different Depths Of Excavation In Extracted Teeth And Comparison With Cbct Prediction, Anshul Mainkar

Master's Theses

Objective: The purpose of this study is to evaluate the depth of troughing needed to locate the mesiobuccal 2 canals in maxillary molars. Troughing the pulp chamber floor can locate hidden or calcified mesio-lingual canals. Materials and Methods: This study utilized 29 extracted maxillary first and second molars with mesiobuccal 2 canals confirmed by sectioning the mesiobuccal root in cross-section 5 mm coronal to the apex. A standard access cavity was prepared and mesiobuccal, distobuccal, and palatal canals were located. A groove was troughed palatal to the mesiobuccal orifice and slightly mesial to the line connecting mesiobuccal and palatal canal …

Integrated Aeration For Enhanced Nitrogen Conversion And Removal And The Effect Of Sampling Frequency On Productivity Estimates In Algae-Based Wastewater Treatment Systems, Lauren Parker

Master's Theses

Raceway ponds can be used to cultivate microalgae for purposes such as wastewater treatment and feedstock for animal feeds and biofuels. Besides nitrogen assimilation in biomass, nitrification can be a wastewater treatment mechanism but one that is hindered by the low nighttime dissolved oxygen concentrations (DO) common in wastewater treatment raceways. The large diel difference in pond conditions and changing influent wastewater quality also raises the question of the optimal frequency and timing of grab sample collection, to obtain representative water quality data. Three sets of triplicate pilot raceways (1,000-L, 0.30-m deep, fed primary clarifier effluent) were operated at an …

Implementation Of A Scale Semi-Autonomous Platoon To Test Control Theory Attacks, Erik Miller

Master's Theses

With all the advancements in autonomous and connected cars, there is a developing body of research around the security and robustness of driving automation systems. Attacks and mitigations for said attacks have been explored, but almost always solely in software simulations.

For this thesis, I led a team to build the foundation for an open source platoon of scale semi-autonomous vehicles. This work will enable future research into implementing theoretical attacks and mitigations. Our 1/10 scale car leverages an Nvidia Jetson, embedded microcontroller, and sensors. The Jetson manages the computer vision, networking, control logic, and overall system control; the embedded …

Development Of A Prolyl Endopeptidase Expression System In Lactobacillus Reuteri To Reduce The Clinical Manifestation Of Celiac Disease, Kara Lynn Jew

Master's Theses

Celiac Disease (CD) is an autoimmune disorder that emerges due to the ingestion of gluten, a protein found in a variety of common grains such as wheat, rye, and barley. Approximately 1 in 100 individuals in the US suffer from CD, making it the most commonly diagnosed gastrointestinal disorder (Ciclitira et. al., 2005). These proline-rich gluten peptides are resistant to proteolysis and accumulate in the duodenum of the small intestine. Once in the duodenum, these peptides illicit an autoimmune response resulting in villous atrophy. Current treatment for CD requires a rigorous adherence to a gluten-free diet. Nevertheless, gluten-containing grains are …

The Effects Of Atomic Oxygen On Patch Antenna Performance And Lifetime, Max J. Barta

Master's Theses

The space environment is a volatile and challenging place for satellites to survive in. For Low Earth Orbiting (LEO) satellites, atomic oxygen (AO) is a constant corrosive effect that degrades the outer surface of satellites over long durations. Atomic oxygen exists in the atmosphere between 180 and 675 km and has a relatively high energy at 4.5 eV, which allows AO to break molecular bonds in materials on the surfaces of spacecraft. As the number and complexity of CubeSat missions increase, there is an increased risk that AO degradation on commercial off the shelf parts (COTS), such as antenna, could …

Humanitarianism Is Not Permissiveness: Defending The Integrity Of The Spanish Border And The Lives Of African Immigrants, Genevieve Hoyt

Master's Theses

Spain has recently become one of the top destinations for people immigrating to the European Union (EU), with upwards of 1 million African immigrants living in Spain today (“Immigrant and Emigrant Populations” 2018). This heavy flow of immigration into a country whose economy is barely afloat has caused a crisis for not only Spain but also the EU as a whole. Illegal immigration from Africa has proved to be a serious problem in Spain, bringing human rights violations at the border; an increasing unemployment rate; and growing discrimination against black immigrants in the social structure. This paper will analyze how …

Attachment As A Moderator Between Exposure To Maternal Depression And Externalizing Outcomes In Childhood, Christina Carlone

Master's Theses

No abstract provided.

The Development Of An Online Survey And Screening Tool To Assess Toddler Feeding Behaviors In A Low-Income Connecticut Community, Lindsay Fenn

Master's Theses

No abstract provided.

Data-Driven Database Education: A Quantitative Study Of Sql Learning In An Introductory Database Course, Andrew C. Von Dollen

Master's Theses

The Structured Query Language (SQL) is widely used and challenging to master. Within the context of lab exercises in an introductory database course, this thesis analyzes the student learning process and seeks to answer the question: ``Which SQL concepts, or concept combinations, trouble students the most?'' We provide comprehensive taxonomies of SQL concepts and errors, identify common areas of student misunderstanding, and investigate the student problem-solving process. We present an interactive web application used by students to complete SQL lab exercises. In addition, we analyze data collected by this application and we offer suggestions for improvement to database lab activities.

Short Term Shifts In Soil Nematode Food Feb Structure And Nutrient Cycling Following Sustainable Soil Management In A California Vineyard, Holly M. Deniston-Sheets

Master's Theses

Evaluating soil health using bioindicator organisms has been suggested as a method of analyzing the long-term sustainability of agricultural management practices. The main objective of this study was to determine the effects of vineyard management strategies on soil food web structure and function, using nematodes as bioindicators by calculating established nematode ecological indices. Three field trials were conducted in a commercial Pinot Noir vineyard in San Luis Obispo, California; the effects of (i) fertilizer type (organic and inorganic), (ii) weed management (herbicide and tillage), and (iii) cover crops (high or low water requirements) on nematode community structure, soil nutrient content, …