Digital Commons Network^™

Do You See What I See? Perception And Social Construction Of Academic Success Between Student-Athletes And Support Services, Lauren Kirby

Graduate Theses and Dissertations

The current study explores how academic success is defined and socially constructed between athletic academic support professionals and at-risk student-athletes. There continues to be an increase in academic support services provided to student-athletes, including learning specialists, academic advisors, and academic buildings (Wolverton, 2008). Although a significant relationship between support services and academic output of student-athletes has been found (Hollis, 2002; Ridpath, 2010), the relational and communicative dynamics of these groups have not been fully explored.

Using qualitative methods, one-on-one interviews were conducted with participants, and grounded theory and thematic analysis were employed to identify overarching themes for the research questions. …

White Power In Context: The Structural Correlates Of White Power Support Events In The United States, 2012-2015, Drew Cormac Medaris

Graduate Theses and Dissertations

Much of the prior research on white power groups focuses on very rare outcomes – criminal events, especially violent ones – without as much attention devoted to the more common or fundamental activities that often work to start the mobilization process for ethnocentric groups and the individuals associated with them. Broadly, the goal of the current study is to fill this gap in knowledge by integrating prominent criminological theories and themes drawn from the Social movement literature in order to explore the geographic distribution and macro-level correlates of ideologically-motivated white power movement activities. Specifically, I implement content analysis techniques of …

Where We Get Our News: A Multilevel Analysis Of The Media Framing Of Immigration And Crime, Cody Robert Tuttle

Graduate Theses and Dissertations

Despite an abundance of literature demonstrating that immigration and crime are unassociated, public opinion often reflects the contrary. I examine a source that could contribute to this disconnect between research and public opinion – media framing – particularly, how the specific way that news outlets talk about immigration and crime, along with where they are located geographically, influence how prominently these stories are covered. I employ content analysis of newspaper articles from 2008-2012, which I geo-locate and pair with structural covariates gathered from several other data sources. I use multilevel models to analyze the effect of article-level framing and county-level …

Mental Health Counselors Working With Individuals With Developmental Disabilities: A Phenomenological Investigation, Syard G. Evans

Graduate Theses and Dissertations

Individuals with intellectual and developmental disabilities are often not included in traditional mental health treatment services due to beliefs that these individuals cannot benefit from mental health counseling and that mental health clinicians are not capable of treating this population. Some research exists that discusses techniques and interventions recommended to serve individuals with intellectual and developmental disabilities in mental health; however, there is little information on the specific counselors who are willing and able to support this population. A qualitative methodology was utilized to examine the phenomenon of mental health practitioners with experience serving individuals with intellectual and developmental disabilities. …

Monolingual And Bilingual Children's Language-Based Social Preferences In A Predominantly Monolingual Environment, Rachel Marie Stevens

Graduate Theses and Dissertations

Monolingual children consistently display Social preferences for individuals who speak their native language with a native accent compared to individuals who speak a foreign language or speak their native language with a foreign accent. Two explanations have been proposed for these language-based preferences. The first explanation is that language cues a child to in-group membership and children prefer to affiliate with individuals who are members of the same in-group. The second explanation is that children display preferences for their native language and accent because that is what they are most familiar with, and children prefer familiarity over the unknown. The …

Characterization Of The Rnap Binding Sites On A Λ Dna Using A Solid State Nanopore Combined With A Tuning Fork Force Sensing Probe Tip, Harpreet Kaur

Graduate Theses and Dissertations

In this dissertation, the binding positions of RNAP holoenzyme on a λ DNA are characterized using an apparatus that integrates a Solid State Nanopore with a Tuning Fork based Force sensing probe (SSN-TFFSP). The SSN-TFFSP system combines the measurement of ionic current through a solid-state nanopore with a DNA tethered probe tip. The position of the tip is sensed by a tuning fork force sensor and is controlled with a nanopositioning system. With this apparatus, translocation speed of DNA through solid state nanopores has been brought down to 100 μs/base. Such a controlled movement of DNA through a solid state …

Error Analysis: A Case Study On Non-Native English Speaking College Applicants’ Electronic Mail Communications, Casey Kraichoke

Graduate Theses and Dissertations

The purpose of this study is to discover major writing problems international college applicants make when composing electronic communications by analyzing the nature and distribution of their writing errors. Additionally, the researcher seeks to discover if there is a relationship between non-native English speakers’ (NNS) writing errors and demographics, which include: gender, country of origin, country of origin’s official language, program level, and program of study. The researcher hypothesizes that countries with English as an official language and the language of instruction in higher education are the most significant predictor of non-native English speakers’ writing errors in terms of count …

Power Efficient High Temperature Asynchronous Microcontroller Design, Nathan William Kuhns

Graduate Theses and Dissertations

There is an increasing demand for dependable and efficient digital circuitry capable of operating in high temperature environments. Extreme temperatures have adverse effects on traditional silicon synchronous systems because of the changes in delay and setup and hold times caused by the variances in each device’s threshold voltage. This dissertation focuses on the design of the major functionality of an asynchronous 8051 microcontroller in Raytheon’s high temperature Silicon Carbide process, rated for operation over 300ºC. The microcontroller is designed in NULL Convention Logic, for which the traditional bus architecture used for data transfer would consume a large amount of power. …

Employees Communicating Within Transportation And Logistics Organizations: What Studying Stress And Acts Of Incivility In The Workplace Reveals About The Industry, Elizabeth Munyak Smith

Graduate Theses and Dissertations

This thesis project investigates the relationship of workplace stress and workplace incivility in the context of transportation and logistics organizations. Informal, one-on-one interviews with transportation and logistics operations office employees are conducted to answer this study’s research questions that examine the commonality, perceived norms, and perceived emotional and physical effects of workplace incivility in response to stress within the transportation and logistics workplace. Using grounded theory analysis, it is revealed that acts of incivility amongst transportation and logistics operations office employees communicate the conflict occurring at the industry, organization, and workplace levels of the transportation and logistics industry. The ultimate …

The “Apparent” Diffusion Coefficient Of Electrons Through A Nafion Membrane, Marissa Kayle Reynolds

Graduate Theses and Dissertations

The hydrogen/oxygen fuel cell is a greener, more efficient energy solution. However, there are many problems with the fuel cell including storage, infrastructure, cost, the oxygen reduction reaction, and the durability of the proton exchange membrane (PEM). The PEM is not only used as the electrolyte for the cell but also as a physical barrier between the anode and the cathode. The integrity of this membrane is crucial to the functioning of the fuel cell. This thesis will examine using ferricyanide as a probe molecule for diagnostic experiment of Nafion membrane integrity. Using hydrodynamic voltammetry with a rotating disk electrode …

Lost Names In The Paleozoic Lithostratigraphy Of Arkansas, Noah Morris

Graduate Theses and Dissertations

The geology of Arkansas has been studied for nearly 160 years, and our understanding of it is continually evolving. Part of this ever-changing study is the nomenclature of the stratigraphy. From the early reports to today, several lithostratigraphic names have been proposed and abandoned to improve the accuracy and clarity of the understanding of Arkansas’ geology. Over these 160 years of study, 214 names have been proposed for the Paleozoic beds of Arkansas, with nearly 80 of them currently in use today. These names are a testimony and legacy of the history of Arkansas’ natural resource development and Arkansas’ geologists. …

Silicon Germanium Bicmos Comparator Designed For Use In An Extreme Environment Analog To Digital Converter, Benjamin Riley Sissons

Graduate Theses and Dissertations

This thesis demonstrates the process of creating a radiation hardened and extreme temperature operating comparator from start to finish in the 90 nm SiGe 9HP process node. This includes the entire design flow from examining comparator topologies, to designing the initial comparator circuits, to simulating the comparator over a temperature range of -196°C to 125°C, and finally the testing of the fabricated circuit. To verify the circuit would work at low temperatures, several new device models were created that could be used for simulations at -196°C. In addition to its properties as a standalone comparator, the circuit was also used …

Statements In Stone: The Politics Of Architecture In Charlemagne's Aachen, Mary Katherine Tipton

Graduate Theses and Dissertations

Statements in Stone is an intersectional and preliminary study of the architecture and Social aspects of the palatine complex of Aachen Germany during the reign of Charlemagne approximately spanning from the 790s to 814CE. The interplay between built space and its Social uses inform the larger Social understandings and interpretations of power and authority. Court poetry written by contemporaries and courtiers of Charlemagne allow readers to glimpse the court as it moved through and interacted with the built environment. Architectural precedents inform the connotations associated with the spaces of Aachen, while spatial theory will provide a framework for understanding the …

Molecular Dynamics Simulations Of Dna-Functionalized Nanoparticle Building Blocks On Gpus, Tyler Landon Fochtman

Graduate Theses and Dissertations

This thesis discusses massively parallel molecular dynamics simulations of nBLOCKs using graphical processing units. nBLOCKs are nanoscale building blocks composed of gold nanoparticles functionalized with single-stranded DNA molecules. To explore greater simulation time scales we implement our nBLOCK computational model as an extension to the coarse grain molecular simulator oxDNA. oxDNA is parameterized to match the thermodynamics of DNA strand hybridization as well as the mechanics of single stranded DNA and double stranded DNA. In addition to an in-depth review of our implementation details we also provide results of the model validation and performance tests. These validation and performance tests …

Characterization Of Coupled Gold Nanoparticles In A Sparsely Populated Square Lattice, Roy Truett French Iii

Graduate Theses and Dissertations

Metal nanoparticles deposited in regular arrays spaced at optical wavelengths support a resonance due to a coherent coupling between localized surface plasmon mode and lattice diffraction allowing for engineering of tunable devices for use in biological sensors, nanoantennae, and enhanced spectroscopy. Techniques such as electron beam lithography, focused ion beam lithography, nanosphere lithography, and nanoimprint lithography are used for fabrication but are limited by cost, device throughput, and small deposition. Polymer soft lithography and continuous dewetting of particles is a potentially viable alternative showing promise in all of those areas. This thesis developed the fabrication of a refined hydrophilic nanoimprinted …

A Hybrid Partially Reconfigurable Overlay Supporting Just-In-Time Assembly Of Custom Accelerators On Fpgas, Zeyad Tariq Aklah

Graduate Theses and Dissertations

The state of the art in design and development flows for FPGAs are not sufficiently mature to allow programmers to implement their applications through traditional software development flows. The stipulation of synthesis as well as the requirement of background knowledge on the FPGAs' low-level physical hardware structure are major challenges that prevent programmers from using FPGAs. The reconfigurable computing community is seeking solutions to raise the level of design abstraction at which programmers must operate, and move the synthesis process out of the programmers' path through the use of overlays. A recent approach, Just-In-Time Assembly (JITA), was proposed that enables …

Comparing Before-And After-School Neurocognitive Performance In High School Athletes- Implications For Concussion Management, Morgan Anderson

Graduate Theses and Dissertations

There are several factors that influence computerized neurocognitive testing performance however, one factor that has not been examined is the potential deleterious effects of cognitive fatigue from an academic school day combined with time of computerized neurocognitive testing (CNT) administration. The primary purpose of this study was to compare before-and after-school CNT performance and total symptoms in non-concussed high school student athletes. The secondary purpose of this study was to compare before-school and after-school CNT performance and total symptoms and chronotypes in non-concussed student athletes. A crossover design was used to compare before-and after-school CNT performance and total symptoms of …

Applications Of Krylov Subspace And Balanced Truncation Model Order Reduction In Power Systems, Sebastian Emanuel Garrido

Graduate Theses and Dissertations

Dynamic representations of power systems usually result in the order of hundreds or even thousands of buses. Therefore, reduction of these dynamic representations is convenient. Two applications of model order reduction in power systems are discussed in this thesis. First, Krylov subspace-based method is applied to the IEEE-123 Node Test Feeder in the context of distribution-level power systems simulation. Second, a Balanced Truncation-based model reduction is implemented in the 3-Machine 9-Bus system for designing a power system controller in the context of generation- and transmission-level power systems.

First, for the IEEE-123 Node Test Feeder, a two-sided Arnoldi algorithm is proposed …

Dpweka: Achieving Differential Privacy In Weka, Srinidhi Katla

Graduate Theses and Dissertations

Organizations belonging to the government, commercial, and non-profit industries collect and store large amounts of sensitive data, which include medical, financial, and personal information. They use data mining methods to formulate business strategies that yield high long-term and short-term financial benefits. While analyzing such data, the private information of the individuals present in the data must be protected for moral and legal reasons. Current practices such as redacting sensitive attributes, releasing only the aggregate values, and query auditing do not provide sufficient protection against an adversary armed with auxiliary information. In the presence of additional background information, the privacy protection …

The Two-Sided Coin: Madness And Laughter As Subversion In Alice’S Adventures In Wonderland And The Sandman, Tessa Starr Swehla

Graduate Theses and Dissertations

Mad female characters in Western literature have traditionally represented attempts by dominant patriarchal discourse to subjugate women’s discourse: these characters are usually pathologized in both their dialogue with other characters and in their physical bodies. This subjugation by representation of mad female characters in dominant discourse parallels similar attempts to portray women as lacking in humor. This thesis studies the intersections between madness and humor and the ability of female characters that embody both to challenge and subvert dominant discourse. By examining the characters of Alice from Lewis Carroll’s novel and Delirium from Neil Gaiman’s graphic novel series The Sandman …

Sensitivity Of Diffuse Reflectance Spectroscopy To Dose- And Depth-Dependent Changes In Tumor Oxygenation After Radiation Therapy, Daria Semeniak

Graduate Theses and Dissertations

Along with chemotherapy, immunotherapy, and surgery, radiotherapy is one of the most common treatments used against cancer. Around 50% of all cancer patients undergo radiation therapy. While for some patients radiotherapy works efficiently and lead to a complete cancer disappearance, for others treatment outcome may be less favorable due to radioresistance processes happening within a tumor on the molecular level. Radioresistance remains a big challenge for modern oncology. The ability to identify radioresistance at the early stage of radiotherapy would help physicians to improve therapy efficiency. At the current moment, despite the rapid progress in cancer understanding and diagnostic modalities, …

Use Of The Silver-Level Arkansas Career Readiness Certificate As A Pre-Hire Screening Tool, Bentley E. Wallace

Graduate Theses and Dissertations

At a statewide level in Arkansas, the Arkansas Career Readiness Certificate (ACRC) is marketed as a means for assessing and exhibiting individual worker skill levels and as an additional aggregate credential to be presented alongside high school and college degree attainment levels. Employers from multiple sectors use the ACRC as a pre-hire screening tool and to determine incumbent worker eligibility for advancement.

Despite having been in place in the state for nearly a decade with over 65,000 Arkansans earning an ACRC, prior to this study no research had been conducted to determine the effectiveness of the ACRC as a pre-hire …

To Create A More Contented Family And Community Life: Home Demonstration Work In Arkansas, 1912 - 1952, Erin Turner Hogue

Graduate Theses and Dissertations

Home demonstration work in Arkansas altered the farm woman’s role within the household, community, and farm economy. By raising the standard of living in rural homes, progressive reforms sought to make domestic life more comfortable and healthy for family members, as well as reduce demands for them. However, rural women used these programs to improve their living conditions while remaining effective producers on the farm. In this respect, home demonstration programs were more than a means of social control aimed at rural America; they were a resource for rural women. Analyzing how women responded and utilized the skills learned from …

Dissecting Salt Tolerance In Soybean By Profiling Differential Physiological Responses Under Salt Stress, Jade Amber Newsome

Graduate Theses and Dissertations

Saline soils are common worldwide and limit the yield potential of many crops. Plants respond in a variety of ways to the stress imposed by saline soils. Plants under salt stress must first sense their surroundings and transmit a signal alerting the rest of the plant to the saline conditions. Salt tolerance in soybeans is typically defined by exclusion of chloride ions from foliar tissues. Though differences in ion uptake among soybean genotypes is well documented, the key mechanisms employed by tolerant cultivars to cope with salt stress on the whole-plant level are still largely unknown. Objectives of the current …

Soil Moduli Obtained From A Back Pressure Constant Rate Of Strain Bender Element Consolidation Apparatus, Yi Zhao

Graduate Theses and Dissertations

A back-pressure saturated, constant-rate-of-strain consolidation device was modified to incorporate bender elements (BP-CRS-BE) and thus allowed for shear wave measurements during consolidation tests. This newly fabricated system has many advantages over other previous or current devices: 1) it can be utilized not only for laboratory prepared soil samples but also for field sampled soils such as Shelby tube samples, and 2) continuous compression curves, and continuous values of vertical hydraulic conductivity and coefficient of consolidation can be acquired with a significant reduction in testing time. Soil modulus values such as shear modulus and constrained modulus are also able to be …

Examination Of Pseudomonas Fluorescence As A Recombinant Expression Host: Cloning, Expression, And Chromatography, Ahmed K.Ali Elmasheiti

Graduate Theses and Dissertations

In an effort to expand the pool of bacterium useful for biotechnology applications, Pseudomonas fluorescens, a common gram negative microbe, was examined for its ability to function in a recombinant setting. P. fluorescens is ubiquitous in nature and was initially identified as a soil bacterium found in dirt and is typically associated with plant material. Past literature indicates that it shared characteristics common to Escherichia coli and Bacillus subtilis, including simple growth conditions and potential cloning vectors, providing motivation to look into both the upstream and downstream characteristics of this bacterium. First, it was demonstrated that P. fluorescens could be …

Willingness To Pay For Irrigation Water Under Scarcity Conditions, Tyler Robert Knapp

Graduate Theses and Dissertations

Reliance of Arkansas agricultural producers on groundwater for irrigation has led to depletion of the Mississippi River Valley alluvial aquifer. Without intervention, consequences include insufficient groundwater to meet irrigation demand as well as drawdown of the deeper Sparta Aquifer, upon which communities in eastern Arkansas rely for non-agricultural use. Among proposed solutions to combat groundwater decline is the construction of off-farm surface water infrastructure to meet the irrigation needs of producers. Despite the importance of irrigated agriculture to Arkansas, there is little know about the economic value of irrigation water to producers. Thus, we implement a double-bounded dichotomous choice contingent …

Grouping Techniques To Manage Large-Scale Multi-Item Multi-Echelon Inventory Systems, Anvar Abaydulla

Graduate Theses and Dissertations

Large retail companies operate large-scale systems which may consist of thousands of stores. These retail stores and their suppliers, such as warehouses and manufacturers, form a large-scale multi-item multi-echelon inventory supply network. Operations of this kind of inventory system require a large number of human resources, computing capacity, etc.

In this research, three kinds of grouping techniques are investigated to make the large-scale inventory system “easier” to manage. The first grouping technique is a network based ABC classification method. A new classification criterion is developed so that the inventory network characteristics are included in the classification process, and this criterion …

Development Of A Pluto Chamber For Surface Simulations, Zachary Michael Mcmahon

Graduate Theses and Dissertations

In light of the exciting new discoveries being made by the New Horizons team, more data on Pluto is available than ever before. However, with the increase in recovered data, there is now a need for laboratory data to interpret it. Laboratory simulation of these conditions and subsequent testing of materials and samples therein is now possible and necessary to understand what has been observed. To do these simulations, a vessel that can achieve low temperatures and high vacuum is required. The scope of this work presented here was to design, build, and test a chamber that could perform these …

The Impact Of Unions On Information Asymmetry, Caroline Burke

Graduate Theses and Dissertations

Prior literature documents a positive association between union power, calculated using industry-level union data, and information asymmetry. Prior literature also finds a mitigating effect from employee ownership on the negative association between union power and voluntary disclosure. Using a sample of company observations for fiscal years 2008 through 2010, I examine the effect of company-specific measures of employee unionization on market-based measures of information asymmetry (proxied for by insider trading activity, analyst following, and analyst dispersion). I also examine whether employee ownership impacts the effect of company-specific measures of employee unionization on my market-based measures of information asymmetry. I find …