Digital Commons Network^™

Micro & Nano Scale Mechanical Testing And Assembly With Applications To Metal Based Microsystems, Ke Chen

LSU Doctoral Dissertations

Metal-based high-aspect-ratio microscale structures (HARMS) are fundamental building blocks for functional metallic micro devices. This dissertation focuses on addressing several problems in fabrication and assembly of metal based microchannel devices. First, the materials’ responses to mechanical deformation at micro & nano scales, namely the mechanical “size effect”, have been explored by molding single crystal Al with long rectangular diamond punches and long wedge shaped indenters. It is noticed that the contact pressure of rectangular punches pressed into single crystal Al strongly depends on the punch width, while that of long wedge shaped indenters depends on the included wedge angle. We …

The Influence Of Job Satisfaction, Organizational Commitment, And Employee Engagement On Intent To Leave Among Public School Teachers In South Louisiana, Stephen T. Bond

LSU Doctoral Dissertations

The purpose of this study was to determine the influence of job satisfaction, organizational commitment, and employee engagement on the intent to leave of public school teachers in South Louisiana. The teachers were described on those psychological measures as well as the demographic characteristics of age, gender, marital status, education level, years’ experience in education, years’ experience in their current school system and years until eligible for retirement. In order to collect the necessary data, the following instruments were utilized: the Job Descriptive Index/Job In General, the Organizational Commitment Questionnaire, the Utrecht Work and Well Being Survey, three-point Intent to …

A Social Ecological Approach To Cyber Bullying, Brett Holfeld

Theses and Dissertations

Advancements in technology in the past decade have corresponded with the emergence of a new form of bullying called cyber bullying or bullying through the use of technology. The Social Ecological Model was used as a guide to examine the development of cyber bullying through the dynamic interactions between adolescents and their social environment (i.e., peer group, family, and school). The main goal of the study was to examine the perceptions and attributions of bystanders to cyber bullying. A scenario was constructed that described a hypothetical middle school students' experience with cyber bullying. Middle school participants (N = 1,151) were …

Microwave Tomography Using Stochastic Optimization And High Performance Computing, Michael William Holman

Theses and Dissertations

This thesis discusses the application of parallel computing in microwave tomography for detection and imaging of dielectric objects. The main focus is on microwave tomography with the use of a parallelized Finite Difference Time Domain (FDTD) forward solver in conjunction with non-linear stochastic optimization based inverse solvers. Because such solvers require very heavy computation, their investigation has been limited in favour of deterministic inverse solvers that make use of assumptions and approximations of the imaging target. Without the use of linearization assumptions, a non-linear stochastic microwave tomography system is able to resolve targets of arbitrary permittivity contrast profiles while avoiding …

Nurse Educators' Consensus Opinion On Using An Academic Electronic Health Record: A Delphi Study, Darlene S. Hanson

Theses and Dissertations

The purpose of this study was to determine the opinions of nurse educators in the state of North Dakota (ND) who were using the academic Electronic Health Record (EHR) known as SimChart. In this dissertation research study, factors that either hindered or facilitated the introduction of SimChart in nursing programs in ND were examined. Additionally, opinions were sought from nurse educators regarding whether or not SimChart contributed to student learning.

Seventy-five nurse educators from the state of ND participated in this mixed-methods study. E-mail addresses were obtained through website searches, and links to Qualtrics® surveys were e-mailed in three separate …

The Influence Of Television And Film On Interest In Space And Science, Katrina Marie Jackson

Theses and Dissertations

Entertainment media has the great potential to inspire interest in the topics it presents. The purpose of this study is to better understand how entertainment media contributes to people's interests in space and science. There is a huge variety of science communication topics in previous literature, some of which deals with television and film, but very little that specifically study how television and film can inspire interest. A historical review of pioneers in the space industry shows that many were inspired by entertainment media, which at the time consisted of science fiction novels and magazines. In order to explore the …

The Experience Of Family Resilience Through Severe Traumatic Brain Injury, Shanda C.E. Hochstetler

Theses and Dissertations

Traumatic brain injury (TBI) is a leading cause of death and disability. Of these injuries, severe TBI (STBI) causes the most profound and long-term disabilities. The experience of STBI has been shown to affect the entire family. Social work professionals need to be aware of the experience of STBI and must be prepared support families through this trauma. The objective in this research was to explore how families experience STBI through the lens of family resilience. A mixed method approach, focused predominantly on the qualitative, was used to draw out the experience of five families wherein a child sustained an …

A Framework For The Integration Of Technology Into Curricula Development And Student Assessment, Washington Helps

Theses and Dissertations

The purpose of this work is to amalgamate technology and education in a manner which will prove to be beneficial to all stakeholders involved and which will allow for an improvement in the ubiquitous process of curriculum development in the teaching and learning sphere. The primary motivation surrounds the issue of limited human resources in terms of teachers and expert knowledge as well as available physical resources such as computer equipment or other classroom artifacts. It should be duly noted that it is in many developing countries where the student-teacher ratio is very high and where such a framework will …

Does Time Matter? An Examination Of Sentence Length, Time Served And Probation Outcomes, Michael P. Mcgrath

Theses and Dissertations

There remains some uncertainty as to whether or not probation supervision can influence the behaviour of offenders as intended and thereby protect the public. Within the growing body of probation literature is support for a number of theoretically relevant variables and probation outcomes (Morgan, 1993; Gendreau, Little & Goggin, 1996). Some of the probation studies include a measure of time (Sims & Jones, 1997; Green & Winik, 2010), although it has never been exclusively studied in probation research. In the studies that do include a time measure, sentence length is the most frequently used and is often related to failure …

Tanzania Higher Education-Fifty Years After Independence, Godfrey Magoti Mnubi

Theses and Dissertations

As Tanzania celebrates fifty years of independence at the crossroads of globalization, the country has experienced a changing landscape and a major transformation in higher learning education with spectacular expansion in student enrollment rates. This requires its higher education institutions, particularly universities, to function effectively as a source of knowledge and to serve as an important partner in sustainable development by promoting effective teaching, research and service in Tanzania.

To understand the pace of globalization and the multitude of social challenges that have faced Tanzania higher education since 1961, how the policies and practices of higher education have evolved over …

The Effect Of Masculinity On Post-Deployment Veterans' Help-Seeking Behaviors And Mental Health Outcomes, Nils-Erik Juhani Juanto Laver

Theses and Dissertations

While the current literature has investigated various barriers to reintegration for male veterans of the Armed Forces of the United States, few have investigated how internal processes such as attitudes and beliefs impact reintegration outcomes. Civilian literature has indicated that men who adhere to traditional masculine ideals tend to have a lower quality of life, less help-seeking behaviors, and more mental and physical health problems. This study set out to investigate how traditional masculine values, age, combat exposure, and relative normative male alexithymia may affect mental health, quality of life, and help-seeking behaviors in veterans who were deployed to combat …

The Relationship Between Forgiveness, Imagined Interactions, Empathy And Relational Satisfaction Among Long-Distance Romantic Couples, Christopher Michael Mapp

LSU Doctoral Dissertations

Forgiveness is viewed as a major factor in maintaining healthy romantic relationships. But couples involved in long-distance relationships experience a different set of challenges than geographically-close couples when it comes to maintaining and enjoying satisfying and stable relationships. Many long-distance couples rely on increased empathy and intrapersonal communication – in the form of imagined interactions – to release tension, rehearse conversations, and review and analyze conflicts. While forgiveness has been studied extensively in a variety of interpersonal settings, it has not been explicitly studied in relation to the usage of imagined interactions or in maintaining long-distance relationships. Moreover, even though …

Improving Routines : Self-Monitoring By Adolescents Diagnosed With Attention-Deficit/Hyperactivity Disorder, Meghan Ann Geary

LSU Doctoral Dissertations

Attention-Deficit/Hyperactivity Disorder (ADHD), though commonly diagnosed in childhood, continues to present with problematic symptoms through adolescence and adulthood (Barkley, Fischer, Edelbrock, & Smallish, 1990; Young & Amarasinghe, 2010). Despite the number of adolescents suffering from ADHD and the detrimental effects the symptoms can have on their lives, there is a paucity of research in interventions tailored to this population (Young & Amarasinghe, 2010). Additionally, an even smaller portion of this research addresses daily routines for adolescents, despite findings that maintaining routines are often very difficult for adolescents with ADHD (Bloomquist, 2005; Coghill et al., 2008; Pfiffner et al. 2007; Robin, …

Voices From The Coolest Corner Of Hell: A Content Analysis Of Slave Narratives In The Study Of Creolization In The Education Of 19th Century African American Slaves, Gina M. Rizzuto

LSU Doctoral Dissertations

The general argument made by Southern historian, Ulrich Bonnell Phillips in 1918, is that the plantation functioned as a type of school for the slave. Similarly, in 1976, Anthony Gerald Albanese examined the plantation system as an institution that conditioned the behaviors of both slaves and slave owners. I maintain that the plantation system was not only an educative agency that conditioned behaviors, but also a conduit for the creolization process. The focus of this study is creolization in the education of African American slaves in the nineteenth century. This is a mixed methods content analysis of African American slave …

Explaining Strategic Firm Responsiveness To Institutional Processes In The Evolution Of Corporate Governance Systems : The Reform Of Director Remuneration Reporting In Germany, Mario Krenn

LSU Doctoral Dissertations

Due to economic and social globalization processes, the boundaries of national systems of corporate governance have become more permeable for the transfer of ideas and practices from other institutional contexts. I derive hypotheses from a multitheoretical framework to explain strategic firm responsiveness to national level pressures for corporate governance reform. This framework integrates institutional, resource dependence, social network, upper echelon, and organizational learning perspectives and portrays corporate governance reform as institutional change. I test hypotheses derived from this framework in the context of the issuance of the German corporate governance code. The code provision of interest recommends that German firms …

Toward Digitizing The Human Experience : A New Resource For Natural Language Processing, Jerry Scott Weltman

LSU Doctoral Dissertations

A long-standing goal of Artificial Intelligence is to program computers that understand natural language. A basic obstacle is that computers lack the common sense that even small children acquire simply by experiencing life, and no one has devised a way to program this experience into a computer. This dissertation presents a methodology and proof-of-concept software system that enables non-experts, with some training, to create simple experiences. For the purposes of this dissertation, an experience is a series of time-ordered comic frames, annotated with the changing intentional and physical states of the characters and objects in each frame. Each frame represents …

Causes And Consequences Of Conflict : Exploring The Influence Of Honor-Based Norms And Values On The Experience Of Intimate Partner Violence In The United States, Michelle Elaine Pence

LSU Doctoral Dissertations

The three studies in this dissertation were posed with the common goal of revealing possible explanations for variations in the causes and consequences of interpersonal violence across regional cultures of the United States. Study 1 posed and tested two hypotheses related to the distribution of male-perpetrated intimate partner homicide across regions of the United States. The South and West, two regions characterized in full (the South) or in part (the West) by honor cultures, emerged as the regions with the highest rates of argument- and conflict- related, male-on-female intimate partner homicides in single victim/single offender incidents. Explanations provided at the …

A Study On The Cleaning And Modification Of Metal Surfaces By Direct Current Cathodic Electrolytic Plasma Process, Jiandong Liang

LSU Doctoral Dissertations

The processes of surface treatments or surface modifications, more formally known as surface engineering, tailor the surfaces of engineering materials. The treatments are usually intended to change physical properties such as thermal or electrical conductivity, modify the surface dimensions, i.e. roughness, etc. A novel surface treatment method, Electrolytic Plasma Process (EPP), was developed for coating purposes, in its early developmental stage. In this work, the major effort is to avoid using any environmental hazardous chemical (coatings) and to extend such its application to some new fields. The general response of the substrate material under electrolytic plasma process was summarized including …

Socially Oriented Negative Self-Referent Cognition : The Development And Validation Of A Measure, Brittany Moree Rudy

LSU Doctoral Dissertations

Social phobia, a debilitating disorder among children and adolescents, is thought to be made up of cognitive, behavioral, and physiological components. However, in children, the cognitive component of this disorder has been largely neglected by researchers. Therefore, the purpose of this study was to create and validate a new instrument, the "Socially Oriented Negative Anxious Statement (SONAS) scale,” that assesses socially oriented negative self-referent cognition in a younger population. Measurement validation procedures including, reliability, validity, and factor analysis, were utilized to examine the proposed questionnaire. Results indicated that the SONAS scale demonstrated good psychometric properties, including a sound two-factor structure …

Challenging Behaviors In Autism Spectrum Disorders : Differences Across Childhood And The Relationship With Autism Symptomatology, Alison Marie Kozlowski

LSU Doctoral Dissertations

Challenging behaviors (CBs) are remarkably prevalent in individuals with autism spectrum disorders (ASDs) and can have a number of severe consequences. While it is believed that CBs reach their peak in childhood followed by a general abatement throughout adolescence and adulthood, the exact trend of CBs during childhood is unknown. Furthermore, the impact of changes in autism symptomatology on CBs during childhood has seldom been explored despite a positive correlation between autism symptomatology and CBs having been established. Therefore, the purpose of these studies was to determine where significant differences in both autism symptomatology and CBs occur throughout childhood, and …

Investigating "Experimentalism" : A Case Study Of The Tuba And Its Repertoire, Andrew Brian Larson

LSU Doctoral Dissertations

The extant repertoire for the tuba serves as a landmark for how the tuba was perceived at that moment in time by that composer. This document contains a brief analysis of the tuba “experiment” that has been ongoing since its invention. In addition, it contains a brief parallel case study of the saxophone and how this instrument, invented at about the same time as the tuba, has embraced experimentalism and modern performance. This document contains five major sections. The first provides a brief history of the tuba and its predecessors. The second introduces numerical data representing the performance frequency of …

Melancholic Epistolarity : Letters And Traumatic Exile In The Novels Of Three Francophone Women, Rosemary Harrington Courville

LSU Doctoral Dissertations

In her 1982 groundbreaking work on the epistolary form in novels, Janet Gurkin Altman gives a working definition of epistolarity which will be a guiding concept for this project; she defines it simply as: “the use of the letter’s formal properties to create meaning…” (Altman 4). Of course, to create meaning is a complicated endeavor. How does one create meaning from the letter’s formal properties? The contemporary authors who engage with epistolarity do so on several levels from the thematic to the structural. From novels that have several characters engaging in letter dialogues to one-sided exchanges that bear more resemblance …

Laser Ablation Sample Transfer For Mass Spectrometry, Sung-Gun Park

LSU Doctoral Dissertations

In this research, a new ambient sampling technique for mass spectrometry was developed that uses an infrared laser to ablate materials under ambient conditions that are captured in a solvent or on a surface. An infrared optical parametric oscillator (OPO) laser system at 3 μm wavelength was focused onto samples for ablation at atmospheric pressure. The ablated materials were transferred to a solvent or surface. For off-line electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI) analysis, the ablated material was captured in a static solvent droplet that was deposited on a MALDI target or flow-injected into a nanoelectrospray source. The …

Creating An Sli Performance Profile With Load, Christy Marie Seidel

LSU Doctoral Dissertations

The purpose of this body of work was to gain a clearer understanding of the potential cognitive factors that may contribute to Specific Language Impairment (SLI). This study attempted to simulate a performance profile of SLI in typically developing children within a grammaticality judgment task, featuring structures historically difficult (third person singular –S and auxiliary BE) and easy (plural –S and progressive –ING) for individuals with SLI. Cognitive load was manipulated through the length of the sentences to be judged, and individual differences in phonological short term memory (PSTM) and working memory were measured (WM). For a successful simulation to …

Effect Of Candidate Spending On Vote Share, Charles Denowh

Theses and Dissertations

Prior research on the effect that candidate spending has on vote share has produced conflicting results, with some research finding that only spending by challenger candidates has an effect on the vote outcome and other research finding incumbent and challenger spending roughly equally effective. The paper explores two suspected causes of the discrepancy in prior results: measurement error and endogeneity in the spending variables. Using new spending data from the Federal Election Commission that can readily be categorized into different spending types, I find evidence of significant amounts of inconsequential spending that should be excluded from candidate spending totals. Additionally, …

Venture Capital Vs. Trade Credit Financing: Is There A Bias In Favor Of Venture Capital And What Is The Impact On Students?, Thomas Allen Clement

Theses and Dissertations

The purpose of this dissertation was to examine whether entrepreneurship education demonstrates a bias favoring venture capital (VC) financing while marginalizing trade credit financing. The effect of this perceived bias was also explored to determine the impact on students studying entrepreneurship.

In the history of entrepreneurial studies, literature revealed VC was a relatively new and rare source of financing that impacted a very small percentage of entrepreneurial ventures. In contrast, trade credit existed for thousands of years and was shown to benefit virtually every type of business model, from start-up to maturity.

The research questions posed were addressed using two …

Conflict In Couples Therapy: Enhancing Relationships Through A Video Tape Feedback Intervention Intending To Develop Effective Conflict Communication Skills, Chasidy I. Faith

Theses and Dissertations

The current study examined the effectiveness of a Gottman-based intervention (2007) aimed to increase effective conflict communication. The study utilized a single case design to examine two couple's conflict interactions through the use of a video tape feedback intervention and psychoeducation about effective and ineffective conflict communication. Couples completed a four week pre-test measurement phase, three sessions of video tape feedback, and four week post-test measurement phase. Through visual analysis, the study investigated the effect that this conflict management intervention had on relational satisfaction and adjustment, life satisfaction, overall distress levels, and conflict abilities. Findings of the current study were …

Molecular Simulation For Neurodegenerative Diseases: From Modelling Alpha-Synuclein In Aqueous Solutions To Drug Delivery Systems, Erica Ann Hicks

Theses and Dissertations

Using computer simulations, we developed a better understanding of some key chemical steps of alpha-synuclein aggregation as well as amantadine for drug delivery systems. The aggregation and fibrillation of alpha-synuclein, a brain protein of 140 residues, has been linked to several neurodegenerative diseases, including Parkinson's and Alzheimer's diseases. Using molecular dynamics, alpha-synuclein, at various temperatures of 293 K, 310 K, 323 K and 348 K, was shown to undergo rapid conformational change. The non-amyloid- β component (NAC) of alpha-synuclein that is not sterically hindered is suspected to undergo aggregation.

Amantadine has been shown to help regulate the symptoms of Parkinson's …

Targeted Overexpression Of Metallothionein In Endothelial Cells Mitigates Pulmonary Alveolar Basement Membrane Thickening In Transgenic Diabetic Ove Mice: An Unbiased Tem Morphometric Analysis, Holly M. Hewitt

Theses and Dissertations

Damage to small blood vessels in diabetes mellitus (DM) is largely the result of hyperglycemia-driven oxidative stress. This is manifested morphologically by capillary basement membrane (BM) thickening, the hallmark feature of chronic complications of DM. In an effort to demonstrate pulmonary alveolar BM (PABM) thickness increase in DM and to demonstrate for the first time, mitigation of the increase utilizing antioxidant therapy, we crossed the severely diabetic transgenic mouse (OVE) with Jtmt, our recently developed transgenic animal model that overexpresses the antioxidant metallothionein (MT) in endothelial cells. Unbiased TEM morphometry demonstrated that PABM widths in diabetic (OVE) mice were significantly …

Cultural Hybridization: Bicultural Self-Efficacy And Resilience In Northern Plains American Indians, Kyle Xavier Hill

Theses and Dissertations

The present study examined bicultural self-efficacy and its relationship to resilience in Northern Plains American Indians. American Indians in the Northern Plains, like many tribes in the United States, experienced a calamitous history marked by interactions with the federal government that were often fatal to the Indigenous peoples of North America, and found to contribute to a conflicted individual and collective well-being of these people within the Northern Plains region. As such, the investigation sought to identify the relationships between that of cultural identity, resilience, and negative life events, or risk, to measures of psychopathology. To that end, efforts involved …