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Essays On The Tax Cuts And Jobs Act Of 2017, Tahsina Haque Simu

Open Access Theses & Dissertations

This study investigates the effects of a tax reform act on the financing and tax planning activities of firms using the Tax Cuts and Jobs Act of 2017 as the experimental setting. This paper examines the changes in debt levels, effective tax rates, use of interest and non-debt tax shields and various tax constructs before and after the tax revision. The results show that debt ratios significantly rise from pre to post event year. Economically, this increase seems significant, as well, as increases in debt ratios range from 1% to 4%. There is also evidence that effective tax rates do …

Geophysical Investigations Of The San Andreas Fault System And Evaluations In Geoscience Education, Sandra Hardy

Open Access Theses & Dissertations

Chapter 1: Investigating Earthquake Cycle Vertical Deformation Recorded by GPS And Regional Tide Gauge Stations in California

Geodetic and tide gauge measurements of vertical deformation record localized zones of uplift and subsidence that may document critical components of both long and short-period earthquake cycle deformation. In this study, we compare vertical tide gauge data from the Permanent Service for Mean Sea Level (PSMSL) and vertical GPS data from the EarthScope Plate Boundary Observatory (PBO) for 10 approximately co-located station pairs along coastal California from Point Reyes, CA to Ensenada, Mexico. To compare these two data sets, we first truncate both …

A Cellulose-Based Biological Sensor For The Quantitative Determination Of Glucose And Glycated Hemoglobin (Hba1c), Gilberto Henao-Pabon

Open Access Theses & Dissertations

ABSTRACT

Importance: Diabetes is a common world-wide disease characterized by insulin resistance and as result there is an increased risk of cardiovascular disease and other metabolic abnormalities, that contribute to irreversible end-organ damage. The cause of diabetes is multifactorial and includes genetic, inflammatory and environmental factors plus lifestyle issues. Because in diabetes there are high levels of glucose and glycated hemoglobin, these molecules are used in clinical settings for the acute and chronic management of diabetic patients.

Objectives: a. To design and build an electrochemical biological sensor using the enzyme Glucose Oxidase (GOX) to detect glucose in biological fluids.

b. …

Remediation And Prevention Of Harmful Algae Blooms (Habs) In Ascarate Lake At El Paso, Texas, Elizabeth Herrera Ortega

Open Access Theses & Dissertations

Ascarate park in El Paso, Texas is an example of an urban ecosystem in the middle of a growing city. It is the largest public-use recreational park in El Paso county and it includes a 48-acre Ascarate lake. The purpose of this study was to prevent harmful algae growth in Ascarate lake using phytoremediation by analyzing different water quality parameters. We installed artificial islands on west cove of the lake with African iris plants to determine the feasibility of remediation to prevent algae blooms in Ascarate lake. Water samples were collected at different points close and away from the islands …

A Social Network Perspective Of Employee Overqualification To Outcomes Relationships In Workgroups, Farid Jahantab

Open Access Theses & Dissertations

Integrating overqualification research with the social network perspective, and emphasizing social exchanges among organizational members, I propose to examine how social networks unpack the relationship between perceived overqualification and organizational outcomes. Specifically, I suggest that perceived overqualification (POQ) has implications for employees' centrality in a friendship network and that friendship network centrality (FRDNC) mediates the relationships between perceived overqualification and organizational outcomes (operationalized as organizational citizenship behaviors directed at coworkers [i.e., OCBI] and turnover intentions). Further, adopting a contingency approach to overqualification, I propose to identify contextual variables that determine the strength of perceived overqualification-social network-outcomes relationships. Social comparison theory …

Isolation And Characterization Of Α-Gal-Containing Extracellular Vesicles (Evs) From Three Major Genotypes Of Trypanosoma Cruzi: Potential Biomarkers Of Chagas Disease, Nasim Karimi Hosseini

Open Access Theses & Dissertations

Chagas disease (ChD) is a neglected tropical disease (NTD) caused by the protozoan parasite, Trypanosoma cruzi. It is transmitted by the insect-vector triatomine (popular known as kissing bug), blood transfusion, organ transplantation, congenitally, and contaminated foods and juices. T. cruzi has evolved several strategies to invade the host cells, including the release extracellular vesicles (EVs), which assist pathogen survival and its replication within the host. T. cruzi is covered with highly glycosylated surface molecules such as glycoproteins and glycolipids, which are shown to be involved in the interaction with host immune cells. These molecules are highly immunogenic and reactive with …

Neuromuscular Responses At Acute Altitude Exposure During Fatiguing Dynamic Exercise Of The Biceps Brachii, Jasmin Renee Jenkins

Open Access Theses & Dissertations

BACKGROUND: The capacity to do work is greatly affected by high altitude exposure. Larger muscle groups of the lower body and exercises primarily aerobic in nature have been well investigated at high altitude. The present study examined acute altitude exposure on the number of repetitions to failure and electromyographic (EMG) repetition duration (Time), EMG root mean square (RMS) and EMG mean power frequency (MPF) during dynamic constant external resistance (DCER) exercise of the biceps brachii.

METHODS: Thirteen subjects performed two sets of fatiguing DCER arm curl repetitions to failure at 70% of their one repetition maximum (1RM) obtained at 1067 …

The Manliness To Defend Themselves: Race And Civilian/Indigenous Warfare In New Mexico, 1598-1898, Ian Anson Lee

Open Access Theses & Dissertations

"The Manliness to Defend Themselves: Race and Civilian/Indigenous Warfare in New Mexico, 1598-1898," explores three-hundred years of warfare between the civilian population and Native peoples in New Mexico. For centuries the regimes of New Spain and Mexico had utilized New Mexican civilians to battle independent Indians. A culture of warfare had subsequently emerged among the civilian population. As the United States proclaimed sovereignty over New Mexico, military officials attempted to put an end to the practice of warfare by civilians, yet would be hard-pressed to do so. The ideas of Anglo American officials concerning race and citizenship conflicted with the …

Assessing Attitudes And Knowledge Regarding Voice Modification In Transgender People Among Practicing Speech Language Pathologists (Slps) In Texas, Iliana Renee Lopez

Open Access Theses & Dissertations

The purpose of this cross-sectional study is to examine the attitudes and knowledge of voice modification in TG persons among practicing SLPs in the state of Texas. Thirty-nine individuals completed the 10-minute survey with 38 questions. SLPs in Texas who responded are professionally and personally comfortable working with transgender individuals. Most respondents did not know what was targeted in voice modification services, however are willing to learn. Respondents' attitudes, knowledge and comfort were impacted most by personal values, graduate school education and personal relationships. The results from this study support the need for education and clinical training on cultural competence …

Insights Into The Structure, Pharmacology, And Evolution Of The Glycine Transporter 2, Ashley Bryan Lopez

Open Access Theses & Dissertations

The balance between neuronal excitation and inhibition in the central nervous system is vital for survival. Overexcitation can be toxic and lead to certain manias or even death. On the other hand, extremely low levels of inhibition cause hyperekplexia, pain, and even forms of autism. Neuronal inhibition is, for the most part, achieved by two neurotransmitters, GABA and glycine. Levels of both neurotransmitters in the synaptic cleft are meticulously regulated by the GABA and glycine transporters, respectively, which belong to the solute carrier 6 (SLC6) family of neurotransmitter transporters and share structural similarities with other family members. In Chapter 1, …

Development Of The Payload System And Obc Microcontroller Coding For A Cubic Satellite Performing An Additive Self-Repair Experiment In Space, Eduardo Macias-Zugasti

Open Access Theses & Dissertations

Additive manufacturing, which is also known as three-dimensional printing, in space is one of the most promising technologies advancing current capabilities for in-orbit space manufacturing and assembly. Additive manufacturing contributes to the reduction of cost per kilogram and number of launches, thus facilitating extraterrestrial colonization and deep-space exploration. The state of the art includes advancing efforts inside the International Space Station (ISS). However, the ISS is a controlled environment and, to the best of our knowledge, no spacecraft or satellite has performed additive manufacturing tasks in the extreme environment of outer space. In this work a 1U CubeSat named Orbital …

This, My Breath, Suzette Louise Mack

Open Access Theses & Dissertations

This, My Breath, is a creative collection of memories gathered along the seasons in my life-mostly from my formative years. The stories highlight the patient, unconditional love my parents shared, and the way it has influenced me throughout my life. The stories are about life, love, loss, a yearning to belong, and a longing to be both interdependent and independent.

In my family of origin, it was the simple rhythms established through daily life and the honoring of traditions that inspired the deepest meaning, purpose, and hope. The seasons of the year brought my family alive with a flow of …

Understanding The Connections: An Analysis Of Climate Change And Human Security, Erica Martinez

Open Access Theses & Dissertations

Increasing evidence shows that the impacts of anthropogenic climate change have magnified and will have dramatic implications for both the natural and social systems (Adger et al., 2014). While research on the security implications of climate change has been found to have a major bearing on policy making, experts have not reached a consensus about how climate change and human security are related, leaving the climate-security nexus and corresponding policies underdeveloped.

The purpose of this study is to delineate and scrutinize the relationship between climate change and human security so that a more comprehensive understanding of the phenomenon is achieved. …

Beyond The Crimson Door, Erik J. Medina

Open Access Theses & Dissertations

An alcoholic father is forced to raise his daughter after the death of his wife. He has been trying to get better with the help of his doctor, but things only seem to get worse when the nightmares he's been having slowly start to merge with his reality. Not knowing what is real and fake, his world is turned upside down when the nightmares begin to threaten his daughter.

Hélida, Margarita Lucia Mejia Rodriguez

Open Access Theses & Dissertations

Hélida es el viaje de una nieta hacia un pasado familiar a través de la figura de su abuela paterna, una mulata crecida en el pacífico colombiano. El yo poético siente el impulso de conocer la tierra donde nació su abuela y va al encuentro de un paisaje de selvas húmedas junto al mar. Entre poemas, prosas cortas, fragmentos de la voz de la abuela, sueños y fotografías, la nieta reconstruye la historia familiar de sus abuelos, revelando el mestizaje, las vicisitudes y las pérdidas. Descubre las desventuras que la abuela experimentó durante su vida, pero también la resistencia con …

Familia First! A Qualitiative Study On The Impact Of Latinx First-Generation College Students' Degree Completion On Their Family In A U.S.-Mexico Border Community, Luis Jaime Mendez

Open Access Theses & Dissertations

Completing a bachelor's degree is a major milestone. The achievement can further be heightened by those who are the first in their families to graduate. By the same token, the attainment of a degree by first-generation Latinx students, who have statistically low percentages of education as compared to other ethnic groups, is crucial.

The purpose of this qualitative study was to examine the familial impact of Latinx first-generation degree completion. The primary research question directing the study was: How does degree completion impact families of Latinx first-generation college students in a U.S.-Mexico border community? Yosso's Community Cultural Wealth (CCW) model …

Expression And Functional Sialome Of Triatomines, Insect Vectors Of Chagas Disease, Maria Tays Mendes

Open Access Theses & Dissertations

Triatomines are blood-sucking arthropods that transmit Trypanosoma cruzi, the etiologic agent of Chagas disease (ChD). Triatomines use bioactive molecules in the saliva for successful blood feeding and to evade the hemostatic and immune defense system of the hosts. Knowing the saliva composition could be useful for a better understanding which and how insect-derived molecules might influence host-parasite interactions. Previous studies have shown that some saliva-derived proteins and lipids can modulate the host immune system and increase T. cruzi infection. We hypothesize that the triatomine saliva contains a great diversity of lipids and proteins that can modulate the mammalian host immune …

Boxing Training Effects On Cardiovascular Risk, Quality Of Life, Endothelial Function, And Blood Flow Patterns In Individuals With Elevated Blood Pressure Or Stage 1 Hypertension, Francisco Morales

Open Access Theses & Dissertations

Early stages of high blood pressure, such as elevated blood pressure or stage 1 hypertension, have shown to increase cardiovascular mortality. Exercise is recommended for the prevention and treatment of high blood pressure; however, most clinical evidence is based on traditional types of exercise that have relatively high dropout rates. Therefore, the purpose of this study was to evaluate the effects of boxing training, a nontraditional exercise modality, on clinical and vascular outcomes and its relation to blood flow patterns in individuals with elevated blood pressure or stage 1 hypertension. To achieve these goals, two experiments were designed. The first …

Mi Feria Es Su Feria: How Mexican Americans Created The 1968 San Antonio Hemisfair, Gene Thomas Morales

Open Access Theses & Dissertations

In 1968, HemisFair became the first world's fair to be held in San Antonio, the United States Southwest, and to be recognized by the Bureau of International Expositions. Countries from around the globe were brought together by a shared commitment to democratic unity, Pan-American friendship, and to celebrate San Antonio's 250th anniversary. San Antonio Fair Inc., the group in charge of the fairâ??s construction and production, worked closely with community leaders, the Texas state government, and the U.S. federal government to create the exposition. The fair's theme would be called Confluence of Civilizations in the Americas. Confluence for the fair …

Molecular And Functional Characterization Of Α-Galactosyl Epitopes In Trypanosoma Cruzi, Uriel Ortega Rodriguez

Open Access Theses & Dissertations

Trypanosoma cruzi, the causative agent of Chagas disease (CD) currently affects 6-7 million people across the world. Currently, only two drugs, benznidazole and nifurtimox, are available for treatment of CD and they are highly toxic and less effective in the chronic stage of the disease. Specific biomarkers for diagnosis and follow-up of treatment do not exist in the clinical settings. following chemotherapy, patients take approximately 10-20 years to exhibit negative seroconversion with the conventional serology assays. Moreover, there is no vaccine available to prevent or treat CD. T. cruzi contains a complex cell surface consisting of several classes of glycoconjugates …

A Comparative Assessement Of Discrete And Reciprocal Design In Children With Autism Spectrum Disorder, Jallycia Rene Pearson

Open Access Theses & Dissertations

Although typically diagnosed through social impairment and repetitive stereotypical behavior, recent work in the last decade has shown motor irregularities across the autism spectrum. With regard to upper extremity coordination, studies have agreed that children on the Autism spectrum present overall decreased performance compared to their neurotypical peers but fail to find commonality on the locus of this error. For example, studies have highlighted reaction time, arm trajectory as well as corrective sub-movements as areas in need of improvement. One possible reason for the conflicting results could be related to the nature of the task employed, e.g. discrete vs reciprocal …

Impact Of School Closures On Principal Leadership And Identity, Isela Pena

Open Access Theses & Dissertations

This Dissertation presents findings from a phenomenological qualitative study of three principals who experienced school closures. This research aimed at exploring the impact of school closures on principal leadership and leadership identity. Utilizing the Ackerman's and Maslin-Ostrowki's (2002) concept of the wounded leader, this study framed the school closure as a critical incident which caused these principals to experience a wounding, thus providing them an opportunity to reflect and create a narrative around their experience, and through this examination, potentially undergo a transformation leading to professional and personal growth. Through semi-structured interviews, three school principals who experienced school closures, shared …

Achieving Effectiveness And Innovation In U.S. Public Organizations Through Ability-Enhancing And Opportunity-Enhancing Soft/Commitment High Performance Work Practices, Kingshuk Saha

Open Access Theses & Dissertations

It is well-established in the management literature that HPWPs improve productivity in the private sector. But does HPWPs work in the public sector? A thorough literature search revealed only 45 HPWPs studies done in the public sector. The first purpose of this Dissertation is a thorough literature review of these 45 studies. Out of these 45 studies, only 12 had samples obtained from the U.S. Hence, it can be argued that there is much to be discovered about HPWPs in the U.S. public sector. The second purpose of this Dissertation is to categorize HPWPs in the U.S. public sector based …

Utilizing Zircon (U-Th)/He And 40ar/39ar Thermochronology To Refine The Thermal History Of The Great Unconformity Within New Mexico And Colorado, Jacoup Roiz

Open Access Theses & Dissertations

The Great Unconformity beneath Paleozoic strata represents 100-1000 m.y. of missing rock record that formed through extensive weathering and erosion. Despite its global extent, the timing of Precambrian crystalline rock exhumation prior to Phanerozoic sediment deposition remains relatively unresolved in many locations. I utilized zircon (U-Th)/He (ZHe) thermochronology in order to constrain the long-term thermal history of Precambrian rocks in Colorado and New Mexico, and test my hypoThesis that these units below the Great Unconformity experienced multiple cooling and reheating episodes resulting in a compound surface representing multiple unconformities. In addition to a synThesis of previously reported data in the …

Free Semigroups And Identites For A Class Of Monoids, Enrique Salcido

Open Access Theses & Dissertations

The study of words as a mathematical object is a deep and rich field of study. Algebra, Combinatorics, Theoretical Computer Science etc., are major disciplines, which are fully using this study. Combinatorial properties (via Codes, Free Hulls, Infinite Words), and algebraic properties of words are presented in this Thesis. The free semigroup on a set (alphabet) X and finite presentation of semigroups have a central place in the algebraic study of words. The last part of the Thesis is devoted to the study of identities in the alphabet X = {x,y} for a class of monoids. The characterization of such …

Translanguaging Practices Of Multilingual Learners In The German As A Foreign Language Class, Annabell Sahr

Open Access Theses & Dissertations

Translanguaging of multilingual learners in the German classroom is a qualitative study situated at the border between Mexico and the United States. This participatory action research explores how bilingual students learn German at the university level. The data collected includes participatory observations, memos, audio-recordings of all in-class conversations for the duration of one semester. A total of three German classes participated. Furthermore, three phenomenological interviews were conducted with each participant. Additionally, focus group interviews were conducted. The recordings were transcribed and analyzed for emerging themes. Findings from the in-class conversations show translanguaging as an applied learning strategy. Findings from the …

Thinking Through Children: Proposing Theory For Doing Critical Content Analysis Of Multicultural Children's Literature, Carmen Milagros Seda

Open Access Theses & Dissertations

Theoretical constructs underpinning critical content analysis (CCA) for multicultural children's literature as a method for education as a field are currently drawn from critical literary theory. I problematize CCA methods based on claims by contributors that the methods are applicable for classroom educators, and can be applied during critical reading in classrooms with young readers. The change in audience and purpose warrants reflection on the extant theoretical underpinnings of CCA methods. Specifically, whether extant theories account for the mental life and psychoemotive needs of children and adolescents, especially as relates to agency analysis. Using a theoretical framework comprised of Childism …

Folklore: Rescuing Black America From Its Erroneous And Stereotypical Depictions In Literature, Samantha Brooke Shields

Open Access Theses & Dissertations

Folklore: Rescuing Black America from Its Erroneous and Stereotypical Depictions in Literature is a Thesis written to reconnect the Black Community's tether to the foundational truths of the Black American story that were systematically severed. Unfortunately, because of slavery, the deliberate erasing of records that would help identify the origins of persons brought to this country, the selling/separating of parents from children, and Jim Crow laws that prevented blacks from reading, writing, or congregating, vast portions of our story remain missing. SaMantha (SaM)Shields employs newly created folklore based on oral histories, interviews, and other first-hand accounts to tell Black America's …

Specimens Of Opportunity Reveal Novel Information On The Sowerby's Beaked Whale (Mesoplodon Bidens), Kerri Jean Smith

Open Access Theses & Dissertations

Conservation science requires quickly acquiring information and taking action in order to protect species at risk of extinction. Elusive wildlife, however, present challenges to effective conservation measures because it is often difficult to collect enough data on these species to recognize their conservation needs and implement management plans. As a result, researchers must identify alternative means of gathering sufficient data on these species. Specimens of opportunity, such as museum specimens, provide a way to improve knowledge on these species, and these specimens have already proven valuable by increasing information on biodiversity, habitat and range, and population structure in many species. …

Virtual Agency: A Hermeneutic Examination Of The Network And Actors Within The Composition Classroom, Ronald Dean Straight

Open Access Theses & Dissertations

This Dissertation explores the visible and invisible rhetorical choices made in, around, and through the composition classroom and its community of practice, students, faculty, technologies, staff, and other undiscovered actors, through Actor Network Theory and Interpretative Phenomenological Analysis. The discoveries will better situate the impact of identities and actancy within composed, hybrid worlds. Students, society, the world is now collectively connected and able to communicate, acquire knowledge, and interact on a virtual world stage. The exigence for this dissertation's exploration is that Moore, et al. (2016) concluded that students did not make a connection between the technology they have access …