Digital Commons Network^™

Effects Of Temperature On Microbial Parameters Associated With Decaying Plant Litter In A Stream Microcosm Experiment, Hunter David Pates

Electronic Theses and Dissertations

Increases in mean surface air temperature under climate-change predictions are expected to affect microbial activity, as well as carbon dynamics in aquatic ecosystems. I explored responses of litter-associated decomposers along temperature ranges typical of temperate streams in laboratory microcosms simulating stream conditions. The objectives of this study were to determine (1) whether the effects of temperature on stream leaf-associated microorganisms can be explained by the Metabolic Theory of Ecology (MTE); (2) if the effects of temperature are the same across temperatures commonly found in temperate streams; and (3) if there are differences in the magnitude of responses to temperature among …

Microplastics In The Digestive System Of The Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) In Winyah Bay, Sc, Elise Virginia Pullen

Electronic Theses and Dissertations

The digestive tracts and livers of adult male Atlantic sharpnose sharks (N=16), Rhizoprionodon terraenovae, from Winyah Bay, South Carolina were examined for ingested microplastics. R. terraenovae is a small, locally abundant, coastal mesopredatory elasmobranch belonging to the family Carcharhinidae. Microfibers comprised the largest categories of plastics (94% of the total), and were found in 100% of sharks examined. The number of micro- and other plastics ranged from 34 to 75 per individual and totaled 927. The majority of plastics (40%) were blue in coloration, and 55% were <1 mm in length. Microplastics were observed on both the interior and exterior of the organs examined, and three microfibers were embedded within the stomach lining, an observation not previously reported in marine vertebrates and one which represents a potential pathway for the translocation of ingested microplastics.

Examination Of Coalition Sustainability Factors In Texas Human Trafficking Coalitions Through The Lens Of The Community Coalition Action Theory, Bryn Stonehouse

Electronic Theses and Dissertations

The state of Texas ranks number two in the nation for the highest volume of human trafficking, at an estimated 313,000 victims in the state. As awareness of this issue in both Texas and the United States increases, efforts to educate communities, advocate for new policies, and provide services to survivors are on the rise. One strategy utilized by organizations, agencies, and individuals across Texas serving survivors of human trafficking is the use of coalitions. Limited research addresses coalition sustainability within the context of issues outside healthcare initiatives facing communities, including human trafficking. Due to the limited research surrounding community …

An Exploration Of Factors Of Lgbt Cultural Competency Among Prospective Healthcare Professionals, Heather Isbell

Electronic Theses and Dissertations

Literature suggests there is a relationship between cultural competency and health outcomes as well as a perceived fear of discrimination LGBT individuals face when attempting to receive healthcare services. The aim of this study is to assess the level of LGBT CC (cultural competency) among prospective professionals who are expected to provide health care services and to explore factors that affect those attributes. Multiple linear regressions were conducted to test the effect of the following factors of LGBT CC: postsecondary experience, relations with LGBT individuals, and religion using a sample of 57 different healthcare students in a faith-based university during …

Customer Relationship Management And Leadership Sponsorship, Jacob Martin

Electronic Theses and Dissertations

Abstract

It is extremely expensive for an organization to question the effectiveness of its customer relationship management (CRM) systems. The purpose of this study was to gain understanding of how leadership sponsorship impacts the effectiveness of CRM implementation, deployment, and daily use in the United States. A mixed-methods research study was conducted using an electronic survey questionnaire to gather quantitative data and phone interviews to gather qualitative data. The sample included individuals who were familiar with CRM and worked in organizations in the United States that had implemented a CRM system no less than 2 years and no more than …

Connecting Youth To Public Lands Through The Social Change Model Of Leadership Development: The Yosemite Leadership Program, Amanda J. Dworak Rowland

Electronic Theses and Dissertations

This qualitative study explored the success and outcome of the Yosemite Leadership Program (YLP) through its foundation in the Social Change Model of Leadership Development. There are research studies of collegiate programming and the Social Change Model (SCM); however, a literature review uncovered the limited amounts of research around leadership programming connecting collegiate students to their gateway public lands sites. The goal of this research was to identify how the SCM could be used to implement methods and practices of leadership development with college students in partnership with a public lands agency. The specific leadership development themes that were explored …

A Qualitative Case Study Of Student Persistence In A Bachelor Of Science In Forestry Program, Maxwell Holmes

Electronic Theses and Dissertations

Educational leaders in forestry have been challenged to increase and diversify the pipeline of ‘society ready’ foresters. To meet these challenges, leaders must shift their focus to student retention. By understanding the factors that influence student engagement and persistence, these leaders will be better positioned to support students in forestry programs, thus positively impacting retention. This qualitative case study investigated student persistence of second-year forestry students in an undergraduate forestry program. The study was guided by Social Cognitive Theory and Social Capital Theory and explored the malleable psychosocial mechanisms of self-efficacy, sense of belonging, emotion, and well-being proposed by Kahu …

Comparison Of An Acute Bout Of Exercise To A Sugary Snack On Energy, Mood And Cognitive Performance, Erica Knowles

Electronic Theses and Dissertations

Low perceived energy and a decline in cognitive performance throughout the day are common issues, though exercise and food consumption are suggested to improve mood and cognition. The present study compares effects of acute exercise to consuming sugar on mood, energy, and cognitive performance. Subjects underwent blood glucose testing, completed an Abbreviated Profile of Mood States Questionnaire, and Automated Operation Span (OSPAN) and Digit Span tests to measure memory and attention. On two separate days subjects consumed candy or walked on a treadmill for 10 minutes, then measurements were repeated at 30-min, 60-min, and 120-min post. Two-way ANOVA over time …

The Religious Classroom: Analyzing The Cross-Application Of Instructional Communication Pedagogy To Youth Ministries, Lakelyn Taylor

Electronic Theses and Dissertations

Instructional communication literature suggests that, to achieve optimal student learning outcomes, an instructor must completely engage in all aspects of experiential learning. It follows, then, that youth ministers should also employ experiential learning in their youth ministries to achieve their learning outcome goals among the youth they teach. This research project examined three research questions: 1.) What pedagogical strategies do youth ministers use during large group class sessions? 2.) In what ways do youth ministers employ instructional communication best practices within their pedagogical strategies? 3.) What strategies do former students remember their youth minister using the most? The analysis revealed …

Bending The Binary: Effects Of Nonbinary Gender Media Representations On Disposition Formation And Media Enjoyment, Diana Higley

Electronic Theses and Dissertations

Today, the issue of gender plays a larger role in our social discussions than in the past. Over the last decade, new and groundbreaking television shows and movies that showcase gender nonconforming characters and plots that challenge traditional gender roles have become more common. The aim of the present study was to examine the potential effects of gender-neutral representations in media programming and particularly whether different representations of gender might influence audience attitudes toward characters and overall enjoyment of the media. Affective Disposition Theory and Moral Foundations Theory were used as a framework for understanding people's perceptions of gender-neutral media …

Fanfiction Reviews And Academic Literacy: Potential Impacts And Implications, Regina Weiler

Electronic Theses and Dissertations

This study is meant to elucidate how fanfiction-related activities can incorporate many types of critical review, to call attention to what has been overlooked as significant forms of learning, and to understand and take advantage of the opportunities fanfiction's unconventional writing affords in lieu of more deliberate learning environments. This thesis was undertaken due to the significant gap in work done by aca-fan — a portmanteau of academic and fan— scholars who have strong links to the fanfiction community and culture. The aspects explored are the technical writing skills and techniques demonstrated in fanfiction reviews, the influence of the nontraditional …

Engineering Noble-Metal Nanostructures For Biosensing Applications, Haihang Ye

Electronic Theses and Dissertations

The ability to engineer noble-metal nanostructures (NMNSs) in a controllable manner and to understand the structure-dependent properties greatly boost our knowledge in rational design of biosensing technologies. In particular, as a type of highly efficient peroxidase mimics, NMNSs hold promising potential to break through the bottleneck of conventional enzyme-based in vitro diagnostics. During the time of my Ph.D. study, I have successfully: 1) directed a two-step method involving seed-mediated growth and chemical etching for the synthesis of Ru nanoframes (RuNFs) with face-centered cubic crystal phase and enhanced catalytic activities; 2) demonstrated, for the first time, the inherent peroxidase-like activity of …

Normally-Off Computing Design Methodology Using Spintronics: From Devices To Architectures, Arman Roohi

Electronic Theses and Dissertations

Energy-harvesting-powered computing offers intriguing and vast opportunities to dramatically transform the landscape of Internet of Things (IoT) devices and wireless sensor networks by utilizing ambient sources of light, thermal, kinetic, and electromagnetic energy to achieve battery-free computing. In order to operate within the restricted energy capacity and intermittency profile of battery-free operation, it is proposed to innovate Elastic Intermittent Computation (EIC) as a new duty-cycle-variable computing approach leveraging the non-volatility inherent in post-CMOS switching devices. The foundations of EIC will be advanced from the ground up by extending Spin Hall Effect Magnetic Tunnel Junction (SHE-MTJ) device models to realize SHE-MTJ-based …

Energy Expenditure And Stability During Self-Paced Walking On Different Slopes, Alanna Raffaelli

Electronic Theses and Dissertations

Metabolic power and cost of transport (COT) are common quantifiers for effort when performing tasks including walking and running. Most studies focus on using a range of normal walking speeds over level ground or varied slopes. However, these studies use fixed-speed conditions. Fatigue, stability, metabolic expenditure, heart rate, and many other factors contribute to normal walking speed varying over time. This study aimed to show that allowing a subject to walk with a self-paced speed should correlate to a minimum COT at a given slope. This study also aimed to determine if a preferred slope exists based on minimizing metabolic …

Leaning Robust Sequence Features Via Dynamic Temporal Pattern Discovery, Hao Hu

Electronic Theses and Dissertations

As a major type of data, time series possess invaluable latent knowledge for describing the real world and human society. In order to improve the ability of intelligent systems for understanding the world and people, it is critical to design sophisticated machine learning algorithms for extracting robust time series features from such latent knowledge. Motivated by the successful applications of deep learning in computer vision, more and more machine learning researchers put their attentions on the topic of applying deep learning techniques to time series data. However, directly employing current deep models in most time series domains could be problematic. …

Methodological Improvements In The Mrna Profiling Assays For Incorporation Into Dna Casework Workflows, Paris Volk

Electronic Theses and Dissertations

Currently, DNA profiling is the gold standard to identify an individual. However, determining body fluid origin is important in criminal investigations, offering additional information surrounding the circumstances of a crime. However, crime labs can only definitively identify blood and semen and presumptively saliva using techniques that consume time and sample and do not simultaneously identify all forensically relevant body fluids. This causes many crime labs to want to bypass body fluid identification altogether. Therefore, advances into more definitive molecular-based body fluid methods are necessary. One such technique is mRNA profiling because it provides a highly sensitive and specific approach to …

Development Of Daily, Monthly, Inter-Annual, And Mean Annual Hydrological Models Based On A Unified Runoff Generation Framework, Marwan Kheimi

Electronic Theses and Dissertations

The main goal of this dissertation develops a unified model structure for runoff generation based on observations from a large number of catchments. Furthermore, obtaining a comprehensive understanding of the physical controlling factors that control daily, monthly, and annual water balance models. Meanwhile, applying the developed Unified model on different climate conditions, and comparing it with different well-known models. The proposed model was compared with a similar timescale model (HyMOD, and abcd) and applied on 92 catchments from MOPEX dataset across the United States. The HyMOD and abcd are a well-known daily and monthly hydrological model used on a variety …

An Evaluation Of Student Perceptions Of Learning Environments Across Fully On-Line Versus Blended Course Delivery Formats., Pamela Bates Larkin

Electronic Theses and Dissertations

The primary focus of this evaluation study was to describe students' perceptions of their course experiences within two distinct groups of students who participated in either a fully online or a hybrid/blended version of an introductory course. The groups differed in course format (hybrid versus online group) and measures used included primarily the seven scale scores on the Distance Education Learning Environments Survey (DELES) (Walker & Fraser, 2005). Additionally students were asked to respond to one open-ended question designed to assess perceptions of the course delivery format specifically. Although findings must be interpreted with great caution, due primarily to low …

Analysis Of Hydrodynamic And Bathymetric Gradients In Canaveral National Seashore Following Living Shoreline And Oyster Restorations, David Spiering

Electronic Theses and Dissertations

Coastal vulnerability has been gaining recognition as a critical issue, especially with the increasing predictions of sea level rise. Susceptibility to extreme events, eutrophication, and shoreline modification has left many coastal regions in a degraded state. Shoreline protection has traditionally taken the form of seawalls and offshore breakwaters which can be detrimental to both the local ecosystems and adjoining shorelines. The objective of this thesis is to analyze the hydrodynamic and bathymetric variation that occurs within Mosquito Lagoon, Florida following living shoreline and oyster reef restorations. The shoreline sites were sampled using a Before-After-Control-Impact (BACI) design and data were analyzed …

Curating Culture Through Social Media In The 21st Century: Orlando As A Case Study For Arts Participation And Engagement Among Millennials, Wendy Givoglu

Electronic Theses and Dissertations

The American non-profit arts sector is faced with challenges including shifting audience demographics, competition for patrons due to evolving new media and entertainment technologies, changes in donors, and the discontinuation of federal and state funding sources. Savvy arts organizations are rebooting for long-term sustainability and relevancy to their communities, while some organizations adhere to unchanged practices and modes of operation. Amidst the 21st century digital landscape, arts engagement that yields personal and community impact and sustainability for the future is indeed attainable. Characteristics of participatory culture and democratization rooted in emerging digital entertainment and social media communications technology, coupled with …

Game-Theoretic Frameworks And Strategies For Defense Against Network Jamming And Collocation Attacks, Ahmed Hemida

Electronic Theses and Dissertations

Modern networks are becoming increasingly more complex, heterogeneous, and densely connected. While more diverse services are enabled to an ever-increasing number of users through ubiquitous networking and pervasive computing, several important challenges have emerged. For example, densely connected networks are prone to higher levels of interference, which makes them more vulnerable to jamming attacks. Also, the utilization of software-based protocols to perform routing, load balancing and power management functions in Software-Defined Networks gives rise to more vulnerabilities that could be exploited by malicious users and adversaries. Moreover, the increased reliance on cloud computing services due to a growing demand for …

Light Matter Interaction In Single Molecule Magnets, Rebecca Cebulka

Electronic Theses and Dissertations

This dissertation includes a series of experimental realizations which focus on studying the coupling between photons and single-molecule magnets (SMMs) in both the weak and strong coupling regimes. In the weak coupling regime, the aim is to achieve coherent control over the time evolution of the spin of SMMs while applying rapid microwave pulses at sub-Kelvin temperatures, where polarization of the spin bath may be achieved without large magnetic fields, allowing the suppression of dipolar dephasing. The continuing results of this experiment will be to provide a window into fundamental sources of decoherence in single-crystal SMMs in an energy range …

A Study Of Nonlinear Dynamics Of Eeg Responses To Simulated Unmanned Vehicle Tasks, Ziqing Xu

Electronic Theses and Dissertations

In the contemporary world, mental workload becomes higher as technology evolves and task demand becomes overwhelming. The operators of a system are usually required to complete tasks with higher complicity within a shorter period of time. Continuous operation under a high level of mental workload can be a major source of risk and human error, thus put the operator in a hazardous working environment. Therefore, it is necessary to monitor and assess mental workload. In this study, an unmanned vehicle operation with visual detection tasks was investigated by means of nonlinear analysis of EEG time series. Nonlinear analysis is considered …

Applications Of Deep Learning Models For Traffic Prediction Problems, Rezaur Rahman

Electronic Theses and Dissertations

Deep learning coupled with existing sensors based multiresolution traffic data and future connected technologies has immense potential to improve traffic operation and management. But to deal with complex transportation problems, we need efficient modeling frameworks for deep learning models. In this study, we propose two different modeling frameworks using Deep Long Short-Term Memory Neural Network (LSTM NN) model to predict future traffic state (speed and signal queue length). In our first problem, we present a modeling framework using deep LSTM NN model to predict traffic speeds in freeways during regular traffic condition as well as under extreme traffic demand, such …

Vibration Reduction Of Mistuned Bladed Disks Via Piezoelectric-Based Resonance Frequency Detuning, Garrett Lopp

Electronic Theses and Dissertations

Recent trends in turbomachinery blade technology have led to increased use of monolithically constructed bladed disks (blisks). Although offering a wealth of performance benefits, this construction removes the blade-attachment interface present in the conventional design, thus unintentionally removing a source of friction-based damping needed to counteract large vibrations during resonance passages. This issue is further exacerbated in the presence of blade mistuning that arises from small imperfections from otherwise identical blades and are unavoidable as they originate from manufacturing tolerances and operational wear over the lifespan of the engine. Mistuning is known to induce vibration localization with large vibration amplitudes …

Motor And Sensory Characterization Of A Mouse Model Of Charcot-Marie-Tooth Type 2o Disease, Swaran Nandini

Electronic Theses and Dissertations

Dynein is an essential motor protein required for the maintenance and survival of cells. Dynein forms a motor complex to carry intracellular cargoes like organelles, growth factors, peptides, and hormones along the microtubules inside the cells. In neurons, the dynein is the retrograde motor protein that moves cargoes from the neuronal tip to the neuronal soma along the length of an axon. Dynein has an established role in neuronal nuclear migration, transport of neuronal survival signals and growth factors, organelle positioning inside neurons etc. Hence, it is not very surprising that numerous mutations in dynein have been reported in association …

The House That Credit Built: How Advertising Shaped A Culture Of Borrowing In The Decade Of Prosperity., Morgan Folden

Electronic Theses and Dissertations

This thesis is an examination of the visual rhetoric of the advertisements in 1920s America that encouraged consumers to implement payment plans to purchase commodities. It begins with an analysis of a standard advertisement found in a popular subscription journal and describes the ad’s reliance on an editorial-style layout to appeal to the rationality of the viewer, a theme common among marketing schemes of the surrounding decades. It uses an art historical approach to provide a new lens in studying capitalist economics and the provocative issue of empowerment versus confinement in the general visual representation of American housewives. The latter …

Dreamscape No. 2, "Songs For The Woman In The Sun Hat"., Derek D Carter

Electronic Theses and Dissertations

this dreamscape is a collection of love songs, reworked and reimagined into the dreamy, hazy nature of both dreams and love. each song comes from the jazz canon and takes a specific idea or motif and builds and destroys as it moves along. each song is paired with an interlude, aimed to explore some of the darker memories or regrets we may have felt for loved ones, for love is not without its complications.

Refugee Parent's Perspectives On Preschool Enrollment After Migration And Resettlement., Kathy Stovall

Electronic Theses and Dissertations

Over the years, researchers have documented the behaviors of refugee parents and their challenges as it relates to their children in preschool programs. However, there is a gap in the literature for understanding the refugee parental perception of preschool after resettlement, and what motivates or detracts from preschool enrollment. This research study was conducted to understand the phenomenon of preschool enrollment by refugee parents. The phenomenography research methodology was chosen for this study because it explores how a group collectively perceives a phenomenon. In this study, the research addresses how refugee parents perceive enrollment in public preschool programs. The data …

The Impact Of Palm Cooling Gloves On Cardiovascular, Thermoregulatory, Metabolic, Perceptual, And Ergogenic Responses Produced From Rowing Ergometry., Ian O'Brien

Electronic Theses and Dissertations

Subjects (n = 34) did three rowing workouts of up to eight 2- minute stages separated by 45-60 second rests. Cardiovascular, ergogenic, thermoregulatory, perceptual and metabolic responses to workouts may be aided by intermittent palm cooling. Subjects received one of the following treatments per workout in a randomized sequence: no palm cooling, intermittent palm cooling during workouts, or palm cooling applied intermittently during workouts and post-exercise recovery. Methods: Palm cooling entailed intermittent cold (8-11o C) against the palmar surface of subject’s hands. Workouts began with 10 minutes of rest, followed by a 10-minute low- intensity warm-up and the workout, concluding …