Digital Commons Network^™

An Open Source, Line Rate Datagram Protocol Facilitating Message Resiliency Over An Imperfect Channel, Christina Marie Smith

Graduate Theses and Dissertations

Remote Direct Memory Access (RDMA) is the transfer of data into buffers between two compute nodes that does not require the involvement of a CPU or Operating System (OS). The idea is borrowed from Direct Memory Access (DMA) which allows memory within a compute node to be transferred without transiting through the CPU. RDMA is termed a zero-copy protocol as it eliminates the need to copy data between buffers within the protocol stack. Because of this and other features, RDMA promotes reliable, high throughput and low latency transfer for packet-switched networking. While the benefits of RMDA are well known and …

Political Motive And Bail: The Effect Of Prosecutorial Strategies On Pretrial Decisions In Federal Terrorism Trials, Michael John Clanton

Graduate Theses and Dissertations

The purpose of this study is to understand how prosecutorial strategies affect pretrial decisions in U.S. terrorism trials and how pretrial decisions in turn affect the disposition of those trials. This research builds off of the work of Smith and Damphousse (1996) which compared terrorism indictees to traditional federal offenders. They found that the use of explicit politicality as a prosecution strategy was a significant predictor of both disposition and the sentence length in terrorism trials. This study focuses on the question of whether the use of an explicitly political prosecution strategy impacts pretrial decisions in terrorism cases and whether …

An Experimental And Computational Evaluation Of The Importance Of Molecular Diffusion In Gas Gravity Currents, Jeremy Jac Herman

Graduate Theses and Dissertations

The accidental release of hazardous, denser-than-air gases during their transport or manufacture is a vital area of study for process safety researchers. This project examines the importance of molecular diffusion on the developing concentration field of a gas gravity current released into a calm environment. Questions which arose from the unexpectedly severe explosion in 2005 at Buncefield, England were of particular interest. The accidental overfilling of a large tank with gasoline on a completely calm morning led to a massive open air explosion. Forensic evidence showed that at the time of ignition, a vapor cloud, most of which now appears …

Reservoir Management Techniques To Enhance Biological Productivity And Protect Water Quality, Ben Alan Thompson

Graduate Theses and Dissertations

Three reservoirs of similar size, watershed land use, and qualitative characteristics in northwest Arkansas, USA were selected to compare the effects of chemical fertilization and pulsed artificial-upwelling on whole-lake productivity, specifically primary production and phytoplankton biomass. Numerous water quality parameters were quantified over a two year period (2011-13) with the goal of understanding how each management technique would stimulate productivity. This experiment was the first step towards a larger goal to ultimately enhance sport fish production. The first year of monitoring occurred in 2011 and served as a control year for the three lakes. Treatments were initiated in two of …

A Reconfigurable Digital-To-Analog Converter With Supply Invariant Linearity, Nicholas J. Chiolino

Graduate Theses and Dissertations

A novel reconfigurable digital-to-analog converter (DAC) with supply independent linearity is presented. The process agnostic converter achieves wide supply range operation and re-configurability by being charge based. This converter consists of a 7-bit parallel digital input control core and an analog "summing" core utilizing charging capacitors with an operational transconductance amplifier in a voltage-follower configuration. This topology is highly configurable to allow for optimization across process voltages, step sizes and low power operation. The specification of the DAC is (1) supply independence (2) low power operation (3) operation up to 200 kHz and (4) conversion control through a DAC enable …

Evaluation Of Shake Weight Protocol In Senior Populations, Isaac F. Cook

Graduate Theses and Dissertations

The Shake Weight® (SW®) is designed to improve muscular fitness in a quick and inexpensive way. This study aimed to determine if the SW® was an effective tool at improving muscular fitness, body composition, and bone mineral density (BMD) in post-menopausal women. Participants were 17 healthy, post-menopausal women from aMidwestern University and divided into two training (SW® and HIT) interventions that lasted 10 weeks. HIT participants performed three sets of 8 repetitions at 80% of their estimated 1RM for the chest press, leg press, lat pulldown, and seated row. SW® participants performed the exercises prescribed by the SW® manufacturer. Changes …

Spatial Distributions Of Rhizoctonia Species In Soybean Fields Undergoing Annual Rotations With Rice, Terry Neil Spurlock

Graduate Theses and Dissertations

Aerial blight is caused by Rhizoctonia solani AG1-IA. This pathogen also causes sheath blight of rice. In Arkansas, many soybean and rice fields undergo an annual rotation of these two crops which facilitates a continuous source of inoculum from one year to the next. Aerial blight is a two stage disease in that R. solani AG1-IA colonizes the plant during the early vegetative growth stages and then aerial blight develops after the soybean canopy closes in the later reproductive stages of development. As a result of the upper portion of the canopy often being asymptomatic, significant yield loss can occur …

Vice In The Veil Of Justice: Embedding Race And Gender In Frontier Tourism, Daniel Richard Maher

Graduate Theses and Dissertations

This dissertation analyzes how "frontier" discourses in Fort Smith, Arkansas simultaneously constitute mythological narratives that elide the deleterious effects of imperialism, racism, and sexism, while they operate as marketing schemes in the wager that they will attract cultural heritage tourists. It examines material exhibits and interpretive history programs at locations including the Fort Smith National Historic Site, Fort Smith Museum of History, Miss Laura's Visitor's Center, and the Clayton House; in texts such as the 1898 book by Samuel Harman whose title forever branded Fort Smith as Hell on the Border; in the subsequent branding and marketing derived from the …

A Geomechanical Study Of The Mississippian Boone Formation, Karen Nicole Mason Buckland

Graduate Theses and Dissertations

The Boone Formation in northwest Arkansas is a chert-limestone sequence analogous to the subsurface Mississippi Lime reservoir in parts of Oklahoma and Kansas. It has low permeability and produces via horizontal drilling and hydraulic fracturing. The response to stimulation by fracturing is dependent on the quantity of chert in the area. Chert nodules and laterally extensive chert layers in the sequence are variable. Locally, cm- to dm-scale chert bedding is continuous and comprises up to 50% of the outcrop. Elsewhere, the chert is nodular and intermittent.

Samples collected from representative outcrops spanning the thickness and aerial extent of the formation …

On The Permanence Of Heideggerian Authenticity, Seth Daves

Graduate Theses and Dissertations

In this essay I pose the following question: is Heideggerian authenticity permanent? To investigate this question I begin with a thorough analysis of what Heidegger means by authenticity. Afterwards I look into the leading figures within the field, seeking guidance in answering the question of the permanence of Heideggerian authenticity. Ultimately I conclude that an amended version of John Haugeland's analysis of resoluteness gives rise to the affirmative response to my question. I conclude by investigating potential problems concluding that Heideggerian authenticity is permanent.

Teachers' Perceptions Toward Implementing English As A Foreign Language At Kindergarten: What Can We Learn From The Case Of Kuwaiti Kindergarten Teachers?, Kawthar M. Habeeb

Graduate Theses and Dissertations

The teaching of English as a foreign language has a promising outlook in the nation of Kuwait. Recent policy reflects language development theories that see early childhood as an especially good period for the learning of a foreign language. Thus, English is now taught at 30 public kindergartens in Kuwait. However, the program apparently was implemented quickly, with little consideration for how teachers and other stakeholders would respond to it. This paper explores that program in the context of the perceptions and views of teachers affected by it.

A review of the existing curriculum points towards deficiencies, and investigation of …

The Meaning Of Play For Adults From A Reversal Theory Perspective, Linda Lane

Graduate Theses and Dissertations

Play is important to adults' mental creativity and happiness (Marano, 1999), and stress reduction (Apter, 2009a; Baptiste, 1995). Yet play may be considered as trivial behavior that is not appropriate for the adult population. The purpose of the study was to examine how adults describe the concept of play and to determine whether this description reflects their dominant metamotivational state. According to reversal theory, these states are the frames of mind that characterize an individual's motivation at any given point in time (Apter, 1982). An individual tends to be in a more playful (paratelic) state or serious-minded (telic) state depending …

Cad Tool Design For Ncl And Mtncl Asynchronous Circuits, Vijay Mani Pillai

Graduate Theses and Dissertations

This thesis presents an implementation of a method developed to readily convert Boolean designs into an ultra-low power asynchronous design methodology called MTNCL, which combines multi-threshold CMOS (MTCMOS) with NULL Convention Logic (NCL) systems. MTNCL provides the leakage power advantages of an all high-Vt implementation with a reasonable speed penalty compared to the all low-Vt implementation, and has negligible area overhead. The proposed tool utilizes industry-standard CAD tools. This research also presents an Automated Gate-Level Pipelining with Bit-Wise Completion (AGLPBW) method to maximize throughput of delay-insensitive full-word pipelined NCL circuits. These methods have been integrated into the Mentor Graphics and …

The Impact Of Selected Academic And Demographic Variables On Mathematics College Readiness Predicted By Act, Marcia Sue Smith

Graduate Theses and Dissertations

The purpose of the study was to determine the degree to which academic and demographic variables affected the ACT results used in determining college readiness. This quantitative research study followed a non-experimental correlational design. A multiple regression was used to analyze archival data to determine the impact the combined Arkansas Comprehensive Testing, Assessment and Accountability Program (ACTAAP) mathematics end-of-course (EOC) score, high school GPA, and highest mathematics class completed had on the ACT mathematics exam. In addition, a hierarchical multiple regression model was used to determine how English language learner (ELL) status and socio-economic status (SES) impacted students' ACT performance …

The Confounding Effects Of Ability, Item Difficulty, And Content Balance Within Multiple Dimensions On The Estimation Of Unidimensional Thetas, Ki Lynn Matlock

Graduate Theses and Dissertations

When test forms that have equal total test difficulty and number of items vary in difficulty and length within sub-content areas, an examinee's estimated score may vary across equivalent forms, depending on how well his or her true ability in each sub-content area aligns with the difficulty of items and number of items within these areas. Estimating ability using unidimensional methods for multidimensional data has been studied for decades, focusing primarily on subgroups of the population based on the estimated ability for a single set of data (Ackerman, 1987a, 1989; Ansley & Forsyth, 1985; Kroopnick, 2010; Reckase, Ackerman, & Spray, …

Do Changes In The Sg&A Ratio Provide Information About Changes In Future Earnings, Analyst Forecast Revisions, And Stock Returns?, Eugene Scott Johnson

Graduate Theses and Dissertations

In fundamental analysis, increases in the ratio of selling, general and administrative (SG&A) costs to sales (SG&A ratio) are viewed as negative signals about future firm performance. However, this interpretation focuses on the overall change in the SG&A ratio and ignores the underlying changes in the components of the ratio. For example, prior literature finds that the interpretation offered by fundamental analysis does not hold during periods of decreasing sales. I contend that a further partitioning of the full sample into subsamples representing all possible combinations of changes in the components of the SG&A ratio, and the ratio itself, will …

The Children Of Amarna: Disease And Famine In The Time Of Akhenaten, Kathleen Kuckens

Graduate Theses and Dissertations

What is now known as Amarna, Egypt there once stood a grand city. Hastily built and quickly abandoned, this once capital city of Egypt was the brainchild of the Pharaoh Akhenaten. In 2002 the final resting place of the inhabitants who populated this ancient city were discovered. Since excavations began at the South Tombs Cemetery an unusual high number of individuals aged 3-25 have been excavated. Out of the 278 individuals excavated thus far, 45% of them fall to the adolescent and sub-adult category. Under normal circumstances this portion of the population tends to be the most robust and resilient, …

The Geographic And Social Distance In Finance, Liping Ma

Graduate Theses and Dissertations

Our research interests lie in studying the economic behavior, choices, and actions of individuals given their geographical and Social proximity to others, and analyze the consequences of such decisions to the financial health and survival of households, firms, and the macro economy. Network analysis and spatial econometrics take account of information spill-overs and constraints of behaviors as consequence of the geographical and Social distance between and among individuals. In this research, we apply those techniques to analyze aspects of corporate governance and explanations for the recent housing crisis.

The literature on principle-agent problems has devoted most of its attention to …

Structural Properties Of Ferroelectric Lead (Zirconium0.5,Titanium0.5)Oxygen3 Nanotube Array And Electronic Structure Of Lao Delta-Doped Strontium Titanate, Rajendra Prasad Adhikari

Graduate Theses and Dissertations

In this Dissertation we begin with two introductions on: 1) ferroelectricity and related phenomena, and 2) novel properties of Oxide electronics and the generation of two dimensional electron gas. We then give theoretical background of density functional theory (including LDA+U) and pseudopotentials. The first part of research work is about structural, polarization, and dielectric properties of ferroelectric Lead Zirconate Titanate (PZT) solid solution in the form of a nanotube array, embedded in a matrix medium of different ferroelectric strengths. We use the effective Hamiltonian derived from first-principles and finite-temperature Monte Carlo methods to determine the various properties. We revealed different …

Design And Evaluation Of A Fiber Optic Probe As A Means Of Subsurface Planetary Exploration, Robert Paul Pilgrim

Graduate Theses and Dissertations

The Optical Probe for Regolith Analysis (OPRA) is an instrumentation concept designed to provide spectroscopic analysis of the near subsurface of unconsolidated regolith on bodies such as moons, asteroids and planets. Below a chemically altered surface may lay the geological history in the form of stratigraphy that is shielded from degradation due to harsh external environments. Most of what we know about our solar system comes from remote platforms, such as satellites that are deployed into orbit around the target body. In the case of Mars, we have had several successful landers and rovers however, with the exception of the …

Your Media Speak So Loud I Can't Hear A Word You're Saying: Impact Of Media And Media Selection On Performance, Martin Hassell

Graduate Theses and Dissertations

With the proliferation of communication media and technologies available, it is important for teams to understand the influence of these media on the performance of their communications. Additionally, it is important for researchers to understand how teams choose and use media. Literature on communication media impacts and communication performance has been somewhat fragmented, and researchers have used different theories and paradigms to study this problem. Researchers still do not have a full understanding of how media influences communication, whether teams recognize and select appropriate media for their communication needs, and what makes some communication more effective, irrespective of the communication …

Profiles And Giving Patterns Of Donors To An Urban Southeastern Community College, John Allen Gyllin

Graduate Theses and Dissertations

This dissertation focuses on fundraising in higher education, and specifically community college fundraising. Having transitioned from a traditional four year university setting to a community college, the author found this research helpful, not only for this institution, but for knowledge of community college donors and why they give. By working with data from this institution over the last ten years, and the research on the topic of fundraising for community colleges, donor trends were developed and needed improvements identified to raise significantly more dollars for the college. It is the outcome of this research that will hopefully assist this institution …

Visual And Linguistic Influences On Public Perceptions Of Swine Confinement, Arthur Leal

Graduate Theses and Dissertations

This study was designed to analyze the visual and linguistic characteristics of online (YouTube) videos and electronic newspapers, identifying relationships with positive, negative, and neutral attitudes toward swine confinement.

This study followed a content analysis design. Two coders, trained to an acceptable level of agreement (κ = .68), examined online videos and electronic newspapers, assessing linguistic and visual images used in relation to attitudes toward swine confinement. A series of search terms deemed suitable for this study's objectives were employed in multiple search engines, and 48 articles and 157 videos were coded for content.

Results from this study showed that …

High School Seniors' Financial Knowledge: The Impact Of Financial Literacy Classes And Developmental Assets, Kathy Ngoc Nguyen

Graduate Theses and Dissertations

Low levels of financial literacy among high school students are a growing concern in the United States. High school students lack the financial knowledge to make important financial decisions. Financial literacy and money management skills are important for high school students as they transition into an ever-changing economy. High school students, who are financially literate, are likely to develop positive financial behaviors and make positive financial decisions. Previous studies show that financial literacy classes can increase financial knowledge.

The present study has three objectives. First, this study examined whether the Money Management Skills for Young Adults Class increased high school …

The Determinants And Consequences Of Ceo Cheap Stock In Ipos, Michael Dennis Stuart

Graduate Theses and Dissertations

The term "cheap stock" describes undervalued stock options granted to CEOs and other key employees prior to initial public offerings (IPOs). Pre-IPO firms have incentives to issue cheap stock as compensation because it results in lower compensation expense on the income statement and in large cash windfalls to CEOs subsequent to the IPO. Because cheap stock results in an overstatement of earnings, the Securities and Exchange Commission frequently challenges the valuations of these grants, which makes cheap stock a key accounting issue in many IPOs. Using a sample of firms that completed IPOs between 2004 and 2007, I investigate the …

Using Oral Reading To Self To Improve Oral Fluency Of English Language Learners, Suwanna Klomjit

Graduate Theses and Dissertations

The purposes of this study were to study the effect of oral reading-to-self on adult English Language Learners' oral fluency and their perception toward oral reading-to-self. This experimental study used a pretest-posttest design. The participants (N = 63) were recruited and randomly assigned to a control group (n = 30) and an experimental group (n = 33). The speaking test: Klomjit Lincoln Measure of Spoken English (KLMSE), developed by the researcher, was administered as both pre and posttest. The treatment was an assignment to read out loud-to-self. The Evaluation of Using Oral Reading to Improve Oral Fluency, a quantitative scale …

Contentious Conversations, Missing Voices: The Ongoing Debate About Style, Megan Yates Grizzle

Graduate Theses and Dissertations

As I began to investigate the concept of style in Composition curriculums, I quickly realized two things: style is difficult to define, and student input about style is virtually absent from the previous scholarship on style theory and pedagogy. This project, therefore, does not seek to end the debate about style. It seeks to do exactly the opposite. I want to extend the ongoing conversation about style even further, this time to include student voices. My project seeks to triangulate discussions about style to include voices from scholars, practitioners, and students. Students are too often an afterthought, receiving instruction based …

Synthesis Of Platinum And Platinum-Copper Branched Nanoparticles For Electrooxidation Of Methanol, Eric Courtland Taylor

Graduate Theses and Dissertations

Platinum and Pt alloys are among the most important heterogeneous catalysts for many organic reactions and electrochemical reactions associated with the fuel cell technologies. How to reduce Pt usage while maintaining the performance of the catalysts becomes a subject for intensive research in materials chemistry. For heterogeneous catalysis, the catalytic reactivity and selectivity are strongly correlated with different crystallographic facets exposed on the surface. The facets with high-index planes whose Miller indices with at one is larger than unity are generally more active than those with low-index planes (e.g., {100}, {111}, and {110}). Tuning the morphology of the nanoparticles to …

Insights Into The Timing, Origin, And Deformation Of The Highland Mountains Gneiss Dome In Southwestern Montana, Usa, Lane Markes Boyer

Graduate Theses and Dissertations

The Highland Mountains of southwestern Montana offer a unique view of the Archean igneous and metamorphic rocks within the Great Falls tectonic zone (GFTZ). A Paleoproterozoic structural gneiss dome has been interpreted in the southern extent of the Highland Mountains. The ∼ 130km² of exhumed metamorphic rocks and gneiss dome exposed in the Highland Mountains are the primary focus of this research. The formation of the Highland Mountains gneiss dome is proposed to be directly related to a northwest-side down detachment (the Steels Pass shear zone) that formed during terrane collision along the GFTZ. The field investigation determined foliation …

Does Analyst Experience Affect Their Understanding Of Non-Financial Information? An Analysis Of The Relation Between Patent Information And Analyst Forecast Errors, Taiwhun Taylor Joo

Graduate Theses and Dissertations

This study examines whether analyst experience affects the relation between patent information and analyst forecast errors. U.S. Generally Accepted Accounting Principles require that firms expense all in-house research and development (R&D) costs. This means that even when R&D activities produce intangible assets with future economic benefits, firms cannot capitalize R&D costs as assets. Consequently, financial statements are largely deficient in the information they provide regarding the output of R&D activities. However, patent information is one type of non-financial information about R&D output that is publicly available.

Using updated patent data, I confirm the results of prior studies that find a …