Digital Commons Network^™

Activation Of Microglia In The Rotenone Lymnaea Stagnalis Model Of Parkinson's Disease, Xiomara Galvan

Theses and Dissertations

Parkinson’s disease (PD) is the most common irreversible neurodegenerative movement disorder affecting approximately ten million people worldwide. In the central nervous system (CNS), PD is known by the selective loss of Dopamine (DA) cells of the substantia nigra pars compacta. Although the disease has been very widely studied, the underlying mechanisms are not yet understood. Several hypotheses have arisen as result of injury of the mitochondria, some experiments include microglia activation, microtubule damage, and reactive oxidative species, which all result in the death of DA cells. The theory of microglia activation upon inflammation was explored in this study. Using the …

First Astrophysical Observations With The Low Frequency All Sky Monitor, Emma Youmans Handzo

Theses and Dissertations

The Low Frequency All Sky Monitor (LoFASM) is a radio telescope that consists of dipole antennas. It is sensitive to the frequencies of 10-88MHz. The primary science goals of LoFASM are to detect and study low frequency radio transient events and to develop and test low frequency interference (RFI) mitigation techniques.

Once a telescope starts collecting data, it is necessary to calibrate the telescope to convert the data into standard units. This will allow for scientific deductions to be made from the data. Once the calibration of a telescope is complete it is necessary to determine what astrophysical sources are …

A Handcrafted Multi-Branch Nerve Scaffold For In Vivo Peripheral Nerve Regeneration, Ridwan Fayaz Hossain

Theses and Dissertations

Arm and leg peripheral nerve injuries contribute largely to functional disability. These injuries seldom affect a single-line nerve; rather the injury goes beyond and disrupts the nerve tissue across multiple nerve paths. Here we investigate handcrafted PDMS based multi-branch nerve guidance conduit, which addresses this crucial branching from the sciatic nerve to aid with the regeneration to their appropriate distal targets. The design concept of the developed multiple branch nerve scaffolds is not specific for the sciatic nerve but can be modified for general use of all peripheral nerves and additional applications. Microchannels are also fabricated into a device in …

Balanus Eburneus (Crustacea: Cirripedia) As A Potential Indicator Of Estuarine System Recovery In South Texas: A Study Of Recruitment, Growth And Stable Isotopes, Crystal Martinez

Theses and Dissertations

Population characteristics of the barnacle Balanus eburneus were analyzed with the purpose of exploring its potential use as a discriminating indicator among sites exhibiting different disturbances or stages of recovery. The study was conducted from May 2012 to May 2013 at four estuaries in the Lower Laguna Madre, TX including a) Bahia Grande, currently under restoration and divided into Bahia Grande North and Bahia Grande South, b) San Martin Lake, which receives runoff water and c) South Bay, a relatively undisturbed reference estuary. In general, similar barnacle recruitment and growth trends in Bahia Grande South and South Bay were explained …

A New American Fiction: Personal Essays, Observances, And Interviews, Daniel M. Mendoza

Theses and Dissertations

This work consists of essays on the author’s personal development as a writer. It also contains reflections on the state of contemporary American and Mexican-American fiction. The author seeks to illustrate the relevance of certain writers affiliated with working-class fiction, a genre of contemporary American fiction that blends social, political, and aesthetic values into their novels and short stories.

Included in this work are also a number of conversations with writers of working-class fiction. In these conversations the author engages other writers in dialogue that further illuminates the author’s development of his creative identity as a cultural and literary writer.

Re: Publics: Woman Of Color Feminist Rhetorical Process Shaping Safe Spaces For A Rehumanizing Discourse, Eloisa E. Moreno

Theses and Dissertations

The discourse of women of color feminists over the last thirty years follows what I refer to as woman of color feminist rhetorical process in three recursive phases: location, deliberation, and restoration. The process is a significant contribution to rhetorical theory in the form of woman of color consciousness. This way of knowing considers complex identities at the intersections of race, class, gender, and sexual identity. The woman of color feminist rhetorician asks us to view self, community, and our notions of love as political constructs. By doing so, we are able to move beyond identity politics and build new …

3d Reconstruction Of Close Range Objects Using Free And Open Source Software And Raspberry Pi Technologies, Juan Lorenzo Monrreal

Theses and Dissertations

Existing 3D rendering open source software along with Raspberry Pi technology can be used to create an affordable method and workflow for time efficient, accurate and quality scans for 3D printing. The emergence of technology spurs a technological community working to progress in a collaborative effort. This brings a potential to the possibility of efficient and economical solutions to emerging problems, in this case, the ability to render three dimensional scans using free and open source software as well as Raspberry Pi technology. The focus of this paper will be divided into three different aspects including the background needed to …

The Competitive Environment Of Community Banking And The Potential Impact On Microenterprise Entrepreneurs' Access To Bank Financing, Robert D. Morrison

Theses and Dissertations

Over the past 35 years, Great Depression era regulatory restrictions on the geographic area of operation and the scope of financial services banks can offer have change significantly. These changes fueled a surge of merger activity and resulted in a 70% decrease in the number of bank charters by 2015. Currently, community banks hold only 14% of bank assets in the US; nonetheless, they play an important role in the US economy because they continue to provide the majority of funding to small businesses. This study finds that over 83% of bank failures occurred in metropolitan areas despite the distribution …

Enhancing Academic Achievement And Satisfaction By Flipping The Teacher Preparation Classroom, Rene R. Zuniga

Theses and Dissertations

This study compared flipped classrooms versus online courses to study the effects of the two instructional methodologies on student achievement and satisfaction in an undergraduate Introduction to Education, EDUC 1301, course. Students self-matriculated in either traditional EDUC 1301 courses which were flipped or in EDUC 1301 online courses. Students' final grades were used to assess student achievement in both teaching methodologies. An end-of-course student evaluation of instructor performance was used to assess students' satisfaction in the courses. A casual comparative research design was used to examine the effectiveness of both teaching methodologies. There was no differences between the two instructional …

Identifying Elements Of A Climate For Sustainability, Rosemond A. Moore

Theses and Dissertations

Sustainability as an area of research is growing in importance not only among academicians, but practitioners as well. A 2010 Accenture study of 700 CEOs found that 93% identified sustainability as important to the long term future success of their organizations. Utilizing CEO sustainability statements Content Analysis was conducted to understand and identify those key elements necessary for a climate for sustainability. A climate for sustainability is one in which sustainability policies, practices, and procedures drive behaviors that are rewarded, supported, and expected within an organization.

Content analysis of CEO statements from organizations recognized for both their sustainability practices as …

Landslide: The 1984 Presidential Election, Colin J. Newton

Theses and Dissertations

The thesis provides an in depth historical observation of the events that transpired during the 1984 presidential campaign, which is significant because of its outcome, the largest electoral victory by any presidential candidate. The scope of the research is January 1984 to November 1984. The thesis provides insight into the Democratic primaries and the general election, focusing on the strategies of both campaigns. It identifies the many factors that led to Reagan’s landslide victory.

The overall purpose of the thesis is to provide a comprehensive picture of both campaigns. The story of the 1984 presidential election is told utilizing memoirs, …

The Effect Of A Writing Course On The English Language Arts State Assessment Examination In A South Texas High School, Esmeralda V. Munoz

Theses and Dissertations

The purpose of this study is to analyze the impact a writing course will have on test scores for At-Risk students who are taking the English I and/or English II State of Texas Assessment of Academic Readiness End-of-Course exam. The group analyzed was comprised of 2nd and 3rd year cohort students.

An Exploratory Investigation Of Tele-Counseling: Looking At The Power Of Therapeutic Alliance In Improving Wellness, Jorge Rostro

Theses and Dissertations

The present study explored the power of one tele-counseling session to elicit change within post wellness ratings scores and the relationship between clients’ perceptions of relationship, goals and topics, approach and method, and overall session with clients’ wellness ratings. Results indicated that the mean for post-session wellness was significantly greater than pre-test wellness ratings. The standardized effect size, d, was .43, indicative of a moderate effect size. No difference was found between client’s perceptions of predictor variables with post-wellness rating scores. This study adds support for the use of tele-counseling services as one session might have the power to elicit …

De Vida, Regalos E Historias, Monica Skrzypinski

Theses and Dissertations

This thesis is a collection of short stories where the common denominator is women, and a compilation of sensual poems that are authored by the protagonists of each story. Stories and poems are intertwined based in the notion that every human being has a sensual and erotic side. The poems are not a reflection of the stories, but a reflection of the woman. This creative work is best defined as hybrid literature.

Influence Of Property School Wealth On Fifth Grade Student Achievement In Reading And Mathematics, Jesus R. Reyna

Theses and Dissertations

The purpose of this study was to investigate whether, or to what extent, property wealth of the upper and lower 5% districts, per pupil expenditure, limited English proficient students, economically disadvantaged students, membership, and teacher experience contribute to student achievement in 5th grade reading and mathematics. To do this, the fifth grade reading and math achievement scores, based on the TAKS Assessments, to represent student achievement were evaluated against district wealth, per pupil expenditure, economic disadvantage, limited English language proficiency, membership, and years of teaching experience of teachers for the years 2009, 2010, and 2011. A combination of descriptive statistics, …

The Bourbaki-Jacobson Correspondence, Jose R. Vera

Theses and Dissertations

A general ring theoretic correspondence between subrings of the endomorphism ring of the additive group of a commutative field will be established. This correspondence (called Bourbaki-Jacobson Correspondence) provides the ordinary Galois correspondence when applied to specific group rings. Throughout this thesis, we will work with finite dimensional field extensions.

My True Father, David Rice

Theses and Dissertations

My True Father is novel about a Mexican American family in South Texas going through a divorce.

Mack Thomas: The Total Beat, James B. Welton

Theses and Dissertations

Mack Thomas enjoyed both an audience seat and a role in the Beat Generation. He lives the life that fits one of his mottos, “if at first you don’t succeed, quit”. Thomas was the author of two autobiographical novels Gumbo and The Total Beast, a jazz and literature columnist for Grove Press in the 1950s and 1960s. Thomas was also a jazz musician worthy to share the stage with Miles Davis, inventor, and entrepreneur among numerous other interests. His friendship with William S. Burroughs was forged by their Texas ties while they were neighbors living in Paris, France and offered …

I Never Left The Borderland, Rosa E. Trevino

Theses and Dissertations

I Never Left the Borderland is a memoir encouraged seven years ago. It was originally meant to be the story of a young girl and her experiences as a migrant student, but once the writing process got under way, the narrative began to evolve. It became a complicated account of how the protagonist, now an adult, felt she was experiencing an inexplicable second coming of age, wrestling with her roles as a wife, mother and scholar. The critical introduction focuses on her relationship with literature and how it kept her sane while she struggled with who she was and who …

Higher Education Governance Structures And Operational Efficiency And Effectiveness Of 4 -Year Public Institutions, Angela H. Claxton-Freeman

Electronic Theses and Dissertations

This study benchmarks 4-year public institutions in the Southern Regional Education Board to determine if there are significant differences between the institutions based on efficiency and effectiveness scores within the types of governance structures in operation among the states. Efficiency and effectiveness scores are also used to determine if there are significant differences between institutions based on state appropriation levels. In this quantitative study, data envelopment analysis (DEA) was used to collapse selected institutional data reported to IPEDS into effectiveness and efficiency scores which were then used as the dependent variables. The variable returns to scale (VRS) model was used …

Dual Enrollment And Community College Outcomes For First-Time, Full-Time Freshmen: A Quasi-Experimental Study, John M. Grubb

Electronic Theses and Dissertations

The purpose of this study was to explore the relationship of dual enrollment course participation by comparing first-time, full-time traditional community college students who participated in dual enrollment (N=246) to peers (N=986) that did not participate. Dual enrollment participation was defined as taking one or more dual enrollment courses. The population for this study (N=1,232) included first-time, full-time students who graduated from public high schools in the service area of Northeast State Community College over a five year span from 2008 through 2012. Propensity score matching eliminated self-selection bias by controlling for confounding covariates …

Radiography Clinical Instructors' Perceptions Of The Transition From Technologist To Educator, Christina G. Lee

Electronic Theses and Dissertations

Radiologic technologists who transition into the role of clinical instructor are usually expert practitioners but may lack knowledge of best practices regarding student instruction and evaluation. The purpose of this phenomenological qualitative study was to investigate how CIs experience the transition from practitioner to educator and what knowledge or education of best practices of instruction and evaluation they bring to the position. This study consisted of interviews with radiography CIs from one associate degree radiography program in the southeastern part of the United States. While some CIs felt prepared to transition into the CI role, none of them had previously …

Institutional Budget Function Allocations As Predictors Of Performance Outcomes Of Tennessee Public Community Colleges And Universities, Dearl D. Lampley

Electronic Theses and Dissertations

With the increased use of performance funding in Tennessee and many other states, it is imperative that administrators strategically budget to meet performance outcome goals. The purpose of this research was to determine the relationship between the budget function allocations of Instruction, Academic Support, and Student Services and performance outcome measures involving student success factors defined as completion of credit hours, awards of technical certificates, and awards of undergraduate degrees through the academic years of 2006-07 and 2013-14. The population included the 13 public community colleges and 9 public universities in Tennessee within the Tennessee Board of Regents and the …

Determining If Custodial Grandparents Of Pre-K - Third Grade Students Perceive Delivery Of Information And Services Offered As Effective In Decreasing Early Chronic Absence, Kimberly S. Cassidy

Electronic Theses and Dissertations

This study examined the delivery of information and services offered to grandparents who had become the primary caregivers of pre-k through third grade students to determine if the information and services were effective in decreasing chronic early absence as defined by Chang and Romero (2008). This mixed-method, multi-case study focused on the perceived needs of custodial grandparents and examined if the school system was meeting their needs through delivery of information and services. The researcher sought participation from 5 custodial grandparents who had grandchildren in pre-k, kindergarten, first, second, or third grades in a Northeast Tennessee school system and whose …

Perceptions Of Acceptable Behavior With Social Networking Among Teachers, Parents, And Students In A Northeast Tennessee Middle School: An Exploratory Study, Lisa L. Raper

Electronic Theses and Dissertations

The purpose of this study was to investigate the perception of acceptable use of social media among teachers, students, and parents. In doing so the researcher touched on generational factors, communication, instructional practice with social networking and the perceptions of what was acceptable among these 3 groups within a middle school setting.

This qualitative study examined how students, parents, and teachers perceived the use of social networking. 30 subjects were randomly chosen and interviewed: 10 students, 10 parents and 10 teachers. There were 4 emerging themes: (a) types of social networking preferred and the reason, (b) relationships and acceptable usage, …

Solar Powered Picnic Table For Charging Cellphones And Other Small Devices, Casey B. Potts

Electronic Theses and Dissertations

Solar panels are used in many different applications for generating sustainable energy. Many countries use solar power as a power generation method. It is also, an excellent option for getting power to difficult areas. There are three main systems used when generating solar power: grid-tied, battery banked, and direct driven systems. Most systems use a combination of grid-tied and battery banked so any unused power can be fed back into the main grid for compensation. The solar power application suggested in this thesis will provide USB power to a picnic table enabling students to charge cellphones and other small devices …

Influence Of Lactobacillus Rhamnosus Isolated From “Amabere Amaruranu” Cultured Milk On Adipogenesis, Justin E. Kotala

Electronic Theses and Dissertations

This study was performed to test the in vitro effects of a Lactobacillus rhamnosus isolate from “amabere amaruranu”, a traditional Kenyan cultured milk, on 3T3-L1 and Caco-2 cell lines. Cultures of fully mature 3T3-L1 adipocytes were treated with bacterial isolate cell extract (CE), filtered spent broth (FSB) from overnight bacterial culture, or with a PBS control. Expression levels of PPAR³1 and 2, C/EBP±, and ATGL proteins in 3T3-L1 cells were upregulated by FSB treatment. CE treatment did not affect protein expression levels. Expression of MTTP and SREBP-1c proteins in Caco-2 cells showed no change with either treatment. Optical density measurements …

The Lawrentian Woman: Monsters In The Margins Of 20th-Century British Literature, Dusty A. Brice

Electronic Theses and Dissertations

Despite his own conservative values, D.H. Lawrence writes sexually liberated female characters. The most subversive female characters in Lawrence’s oeuvre are the Brangwens of The Rainbow. The Brangwens are prototypical models of a form of femininity that connects women to Nature while distancing them from society; his women are cast as monsters, but are strengthened from their link with Nature. They represent what I am calling the Lawrentian-Woman.

The Lawrentian-Woman has proven influential for contemporary British authors. I examine the Lawrentian-Woman’s adoption by later writers and her evolution from modernist frame to postmodern appropriation. First, I look at the …

The Effects Of Transcutaneous Electrical Neurostimulation On Analgesia And Peripheral Perfusion, Leah I. Schafer

Master's Theses

Peripheral arterial occlusive disease (PAOD) affects 8 to 12 million Americans over the age of 50. As the disease progresses, arterial occlusions arising from atherosclerotic lesions inhibit normal metabolic vasodilation in the peripheries, resulting in limb ischemia and claudication. Pharmacological and surgical treatments currently used to treat both the hemodynamic and pain symptoms associated with PAOD can involve adverse and potentially life-threatening side effects. Thus, there is a need for additional innovative therapies for PAOD.

Neurostimulation has a known analgesic effect on both acute and chronic pain. Although the exact mechanisms remain under investigation, local vascular tone may be modulated …

The Ink Transfer And Image Definition Differences Between Elastomer And Photopolymer Printing Systems, Jason Palmer

All Theses

With recent advancements in elastomer imaging and plate technologies, a study comparing the ink transfer and image definition characteristics of the current flexographic printing systems was conducted. Using a number of print metrics across a variety of testing conditions, overall results suggested that the elastomer printing system laid down more ink and produced shaper printing than the photopolymer printing system. In particular, the elastomer printing system showed greater solid ink densities for the solvent and aqueous ink printing conditions, while the photopolymer printing system showed higher values in the ultraviolet ink printing conditions. Results across conditions also revealed that the …