Digital Commons Network^™

Origin And Characterization Of Intrasalt Non-Halite Lithologies Of The Neoproterozoic Patawarta Diapir, Central Flinders Ranges, South Australia, Rachelle A. Kernen

Open Access Theses & Dissertations

Non-halite lithologies in salt diapirs are variously referred to as clasts, chips, rafts, stringers, sutures, and encased minibasins in the literature. Due to the complexities of gathering and processing seismic reflection data within salt bodies, nonhalite intrasalt lithologies, collectively referred to as inclusions here, are often first identified while drilling wells. These wells may penetrate unexpected lithologies of unknown fluid pressure, which can result in economic failure and pose serious drilling hazards and a threat to human life. Therefore, it is imperative to identify and determine the nature of inclusions prior to drilling, and ideally during the well planning process …

I'M Never Fine, Joseph S. Lezza

Open Access Theses & Dissertations

ABSTRACT

Title of Thesis: I'm Never Fine

Joseph S. Lezza, Master of Fine Arts, 2019

Thesis Directed by: Nelson Cardenas, Ph. D.

The University of Texas at El Paso, Department of Creative Writing

During the course of my father's fifteen-month battle with pancreatic cancer, and in its oceanic aftermath, I became both intimately and uncomfortably familiar with the phrase "I'm fine." It developed into a practical and efficient tool for bringing about a quick shift in subject whenever my family situation came under question by a well-meaning friend, trepidatious relative and even during an unexpectedly emotional phone call with my …

Residential Electricity Consumption In Las Cruces, Felipe Francisco Mejia

Open Access Theses & Dissertations

This study examines how residential electricity consumption (KWHC) reacts to changes in the price of electricity, the price of natural gas, real income per capita, heating degree days, and cooling degree days. Annual frequency data analyzed are for Las Cruces, the second largest metropolitan economy in New Mexico. The sample period is 1977 to 2016. An Autoregressive-Distributed Lag model (ARDL) is employed to obtain long-run and short-run elasticities. In the long-run, residential consumption responds in a statistically reliable manner only to real per capita income. In the short-run, residential consumption responds reliably to all of the variables except heating degree …

Indigenous Masculinities And The Tarascan Borderlands In Sixteenth-Century Michoacán, Daniel Santana

Open Access Theses & Dissertations

This Dissertation studies the hypermasculine narratives related to the expansion of the Tarascan state and its borderlands in early colonial Michoacán. Colonial texts such as the Relación de Michoacán and the relaciones geográficas depict the ascendance of the powerful Uacúsecha dynasty whose solar deity and male rulers oversaw the conquest of the Lake Pátzcuaro Basin and succeeded in holding back the Mexica (Aztecs) from penetrating their territories. The Dissertation pays particular attention to how contemporary political events, namely the Spanish conquest of Michoacán, endemic warfare in center-west Mexico, and political rivalries amongst Indigenous elites, influenced these accounts. Consequently, these narratives …

Numerical Investigation Of Molten Metal Infiltration And Pillared Cooling Systems At Microscale, Shaikh Tanveer Tanveer Hossain

Open Access Theses & Dissertations

Flow-through porous media at pore-scales is one of the less explored sides of fluid mechanics due to the complexity associated with highly irregular pore geometry. Most of the established methods that try to quantify such flow are based on statistical observations of flow through numerous porous specimens. Such understandings may satisfy the need for applications where micro-level details are not a concern. Some numerical approaches did try to analyze the micro-level flow, but the analysis was confined to small sample sizes due to the intensive computation challenge. There are several applications of porous media flow where analyzing the large-scale flow …

Performance Evaluation Of Communication Technologies And Network Structure For Smart Grid Applications, Desong Bian, Murat Kuzlu, Manisa Pipattanasomporn, Saifur Rahman, Di Shi

Engineering Technology Faculty Publications

The design of an effective and reliable communication network supporting smart grid applications requires the selection of appropriate communication technologies and protocols. The objective of this study is to study and quantify the capabilities of an advanced metring infrastructure (AMI) to support the simultaneous operation of major smart grid functions. These include smart metring, price-induced controls, distribution automation, demand response, and electric vehicle charging/discharging applications in terms of throughput and latency. OPNET is used to simulate the performance of selected communication technologies and protocols. Research findings indicate that smart grid applications can operate simultaneously by piggybacking on an existing AMI …

Exposing Students To Stem Careers Through Hands-On Activities With Drones And Robots, Vukica M. Jovanović, George Mcleod, Thomas E. Alberts, Cynthia Tomovic, Otilia Popescu, Tysha Batts, Ms. Mary Louise Sandy

Engineering Technology Faculty Publications

Autonomous robots have been used in a variety of ways from collecting specimen in hazardous environments to space exploration. These robots can be found in various manufacturing systems as Autonomous Guided Vehicles (AGVs) to transport parts and assemblies throughout the manufacturing system. They have also been used as a vehicle to convey design thinking and other STEM-related concepts in mechanical engineering/mechanical engineering technology, electrical engineering/electrical engineering technology, computer science, and computer engineering. Various outreach events have included robotics based activities that engage students in building and programming autonomous robots for the purpose of achieving a specific task. These events are …

Service To Older Adults: Defining The A, B, C Of Reference Interchange, Kay Coates

University Libraries: Faculty Presentations

Presentation given at 2019 Atlanta Area Bibliographic Instruction Group (AABIG) Conference

Older adult library patrons often surface with unique research needs. This presents opportunities to serve this population of users through relationship building, knowledge-based content, and access privileges. Employing empathy, design, and ideation from a design thinker’s toolkit can equip libraries to support this diverse group of learners whose information needs range from leisurely bylines, life-long learning, ancestral pursuits or other avocation. Design thinking solutions enable librarians to engage in effective reference transactions that satisfy these and other users. Successful user experience comes down to the A, B, and C …

Reliability Estimation Of Reciprocating Seals Based On Multivariate Dependence Analysis And It's Experimental Validation, Chao Zhang, Rentong Chen, Shaoping Wang, Yujie Qian, Mileta M. Tomovic

Engineering Technology Faculty Publications

Accurate reliability estimation for reciprocating seals is of great significance due to their wide use in numerous engineering applications. This work proposes a reliability estimation method for reciprocating seals based on multivariate dependence analysis of different performance indicators. Degradation behavior corresponding to each performance indicator is first described by the Wiener process. Dependence among different performance indicators is then captured using D-vine copula, and a weight-based copula selection method is utilized to determine the optimal bivariate copula for each dependence relationship. A two-stage Bayesian method is used to estimate the parameters in the proposed model. Finally, a reciprocating seal degradation …

Improving Stem Recruitment Through A Theme-Based Summer Residential Camp Focused On Sea Level Rise, Vukica M. Jovanović, Balša Terzić, Mujde Erten-Unal, Victoria Hill, George Mcleod, Michelle Covi, David Burdige, Jenifer Alonzo, Justin Mason, Tysha Batts, Cynthia Tomovic

Engineering Technology Faculty Publications

In this paper, the authors present an enrichment program that focuses on Science, Technology, Engineering, and Math (STEM) concepts. The program is named Building Leaders to Advance Science and Technology (BLAST) and is held each summer at three universities across the Commonwealth of Virginia: Old Dominion University, the University of Virginia, and the Virginia Polytechnic Institute. BLAST is sponsored in partnership among these three universities and the Virginia Space Grant Consortium (VSGC), and is funded by the General Assembly of Commonwealth of Virginia. Its main purpose is to expose high school students to topics related to different STEM fields through …

Work Environment Factors Impacting The Report Of Secondary Trauma In U.S. Resident Assistants, Robert Jason Lynch

Educational Leadership & Workforce Development Faculty Publications

WORKING WITH TRAUMATIZED INDIVIDUALS can have potentially negative impacts on professional support personnel, including cognitive decline, increased anxiety, and declines in physical health. Despite the responsibilities of resident assistants as crisis-responders, few studies explore how they are impacted by secondary trauma. This study sought to understand how specific aspects of the RA work environment relate to their self-reported levels of secondary trauma. Using a sample of RAs (N = 208), the researcher conducted a quantitative secondary analysis of an existing dataset assessing symptoms of secondary traumatic stress in RAs. Findings indicated relationships between a variety of environmental factors and self-reported …

Liberal Education And The Capitalocene In American Higher Education, Laura Smithers

Educational Leadership & Workforce Development Faculty Publications

Data-driven control is remaking American higher education as the Capitalocene is remaking environment around us. In higher education, how might we orientate the queer potential of liberal education to produce the conditions of possibility of an Earth beyond the Capitalocene and data-driven control, an Earth that produces expansive notions of student success and racially just futures? I take up this inquiry in three sections. First, I establish relations between the orientation of the Capitalocene and the apparatus of data-driven control to develop a critical new materialisms analytic. I then diffract the practices of a student success initiative at a west …

Students With Learning Disabilities, Pair Programming And Situational Motivation, Shana L. Pribesh, Wu He, Silvana M. Watson, Debra A. Major, Li Xu, Ling Li, Xin Tian, Anjee Gorkhali, Yuming He

Educational Leadership & Workforce Development Faculty Publications

Persons with learning disabilities (LD) are underrepresented in computer science and information technology fields despite the explosion of related career opportunities and interest. In this study, we examine the use of pair programming as a collaborative intervention in with computer programming and compare students with learning disabilities to students who do not have learning disabilities. We concentrate on situational motivation constructs which tap into the desire to meet goals and acquire skills. We find that students with LD and similar students without LD fare the same. For the both groups, three of the four situational motivation subscales increase after the …

Community College Faculty's Attitudes And Self-Efficacy With Literacy Instruction In The Disciplines, Kristen H. Gregory, Linda Bol, Thomas Bean, Tony Perez

Educational Leadership & Workforce Development Faculty Publications

Many community college students are entering college-level courses underprepared for the literacy skills required to be successful. Faculty are considered experts in their disciplines, yet are often not trained in pedagogy and literacy instruction (Furco & Moely, 2012; Moje, 2008; Tsui, 2002). We developed a questionnaire to measure faculty's (n = 231) perceptions of their role, level of self-efficacy, and classroom practice in regard to discipline- specific literacy instruction. We analyzed data using exploratory factor analysis, t-tests, and analysis of variance. The findings show that faculty have marginally positive perceptions and self-efficacy regarding incorporating discipline-specific literacy instruction in their courses. …

From Nativism To White Power: Mid-Twentieth-Century White Supremacist Movements In Oregon, Shane Burley, Alexander Ross

Geography Faculty Publications and Presentations

Two document cases in the Oregon Historical Society (OHS) Research Library's George Rennar papers contain significant documentation of White supremacist organizations that developed in Oregon during the period between World War I and World War II. In this Research Files article, Shane Burley and Alexander Reid Ross highlight connections found within the collection between the variety of interlinked, racist, and nationalist organizations during that time period. Burley and Ross argue that while “membership numbers remained relatively small, these organizations provided a crucial link to the development of radical right-wing groups during the postwar era.”

Synthesis And Characterization Of Quasi-Two-Dimensional Chromium Sulfides, Furkan Muhammet Altincicek

Theses and Dissertations

Transition metal dichalcogenides (TMDs) are atomically thin semiconductors of the type MX2 with M being a transition metal and X being a chalcogen atom. TMDs have recently attracted considerable attention because of their novel electronic and optical properties. Many TMDs have been studied except CrS2 because of the challenges in its synthesis. However, the most stable form of chromium sulfides, Cr2S3, chromium (III) sulfide, has been known to exhibit novel properties. For this reason, we studied the possibility of synthesizing thin Cr2S3 to mimic CrS2. We synthesized single phase Cr2S3 in vacuum sealed quartz tubes. The synthesis takes about 5 …

Talking About Black Lives Matter And #Metoo, Linda S. Greene, Lolita Buckner Inniss, Bridget J. Crawford, Mehrsa Baradaran, Noa Ben-Asher, I. Bennett Capers, Osamudia R. James, Keisha Lindsay

Publications

This essay explores the apparent differences and similarities between the Black Lives Matter and the #MeToo movements. In April 2019, the Wisconsin Journal of Gender, Law and Society hosted a symposium entitled “Race-Ing Justice, En-Gendering Power: Black Lives Matter and the Role of Intersectional Legal Analysis in the Twenty-First Century.” That program facilitated examination of the historical antecedents, cultural contexts, methods, and goals of these linked equality movements. Conversations continued among the symposium participants long after the end of the official program. In this essay, the symposium’s speakers memorialize their robust conversations and also dive more deeply into the phenomena, …

Global Capital Flows, Time Varying Fundamentals And Transitional Exchange Rate Dynamics: An Ms-Var Approach, Süleyman Hilmi Kal, Ilhami Gunduz

Publications and Research

This paper studies whether dynamic relationship between exchange rate and economic and financial fundamentals vary depending on exchange rate is overvalued and undervalued with respect to its fundamental value. To achieve this, we implement two-state Markov Switching Vector Auto Regression (MSVAR) model with time varying transition probabilities to investigate whether the relationship among exchange rate, interest rate and inflation dynamics depend on overvaluation and undervaluation of exchange rates for the pre-crises period between years 1972-2009. We govern the transition between the undervalued and overvalued states by using Sharpe Ratios of debt and equity investments of the currency to assess whether …

Listener Perception As A Measure Of Treatment Effectiveness In Voice Modification For A Transwoman, April M. Gutierrez

Open Access Theses & Dissertations

Purpose: The purpose of this study was to assess treatment effectiveness using listener perception as a measure of vocal femininity in a 22-year old transwoman.

Participant: The participant for this study was a monolingual, English-speaking, 22-year old transwoman. Inclusion criteria included self-identification as a transwoman. Exclusion criteria included surgical procedures to the vocal folds.

Methods: This cross-sectional survey study focused on using listener perception as a measure of treatment effectiveness in voice feminization. This study used surveys to investigate how naïve listeners would perceive the participants voice after she received voice modification treatment at the University of Texas at El …

Novel Maximum Entrophy Method For The Average Survival Time Differences Between Two Groups, Joscelyne Guzman - Gonzalez

Open Access Theses & Dissertations

We suggest a Maximum Likelihood estimator for the Average Survival Time Difference between two groups, based on the extra time in which should be added to one group to produce the maximum entropy of the result. The estimator is calculated only from time to event data, does not assume hazard proportionality and provides directly the magnitude of the clinical differences between the groups. Our Monte Carlo simulations show that, even at low sample numbers the estimator is a reliable predictor for the clinical differences between the groups, and therefore can be used to estimate from preliminary data whether or not …

Interactions Of Bacterial Communities With Hydrous Sulfate Minerals In Water-Restricted Gypsic Environments: A Case Study Based In The White Sands National Monument, Brandon Nicholas Lajoie

Open Access Theses & Dissertations

Microbial communities have been commonly found to survive and thrive in arid to hyper-arid gypsic environments that are considered hostile to most other forms of life. The mechanisms through which microbes have conquered these harsh environments remain poorly understood. Here I hypothesize that the microbial communities in water-restricted gypsic settings could benefit in terms of energy and water sources via their interactions with the abundant hydrous sulfate minerals [i.e., gypsum (CaSO4·2H2O)] that build up these niches. Gypsum is of high bio-relevance because its sulfate component may be used as electron acceptor by sulfate-reducing bacteria and the crystallization water may be …

Predicting Recessions In Major Texas Metropolitan Economies Using Yield Spreads And Other Economic Indicators, Aaron Dodson Nazarian

Open Access Theses & Dissertations

The yield spread has been found to serve as a valuable economic forecasting tool. This research employs dynamic autoregressive probit downturn models using the United States yield spread and other regional and macroeconomic variables. This study then inspects the predictive power of the United States yield spread on the five largest urban economies in Texas, the four largest metropolitan areas along the Texas-Mexico border, as well as the Texas state economy. The other regional and macroeconomic variables are included in model specifications based on characteristics of the economies being analyzed. Results indicate that a narrowing of the United States Yield …

On The Performance Of Variable Selection And Classification Via Rank-Based Classifier, Md Showaib Rahman None Sarker

Open Access Theses & Dissertations

In high-dimensional gene expression data analysis, the accuracy and reliability of cancer classification and selection of important genes play a very crucial role. To identify these important genes and predict future outcomes (tumor vs. non-tumor), various methods have been proposed in the literature. But only few of them take into account correlation patterns and grouping effects among the genes. In this article, we propose a rank-based modification of the popular penalized logistic regression procedure based on a combination of l1 and l2 penalties capable of handling possible correlation among genes in different groups. While the l1 penalty maintains sparsity, the …

Recent Changes In The Zooplankton Communities Of Arctic Tundra Ponds In Response To Warmer Temperatures And Nutrient Enrichment, Mariana Vargas Medrano

Open Access Theses & Dissertations

Warming is altering Arctic freshwater ecosystems, enriching the water column, increasing primary productivity and shifting the composition, dominance and the timing of emergence and reproduction of zooplankton communities. Historic data from arctic tundra ponds near UtqiaÄ¡vik, AK have given us valuable insight into changes that have occurred in recent times. A change of dominance from cyclopoid copepods to Daphnia middendorffiana has occurred over a 40 year period. Daphnia are more common, abundant and larger, which may be explained by increased primary productivity stimulated by nutrient release from permafrost thaw. Copepods and fairy shrimp emerged earlier from the overwintering states, which …

Conductivity Modulation In Strained 2d Transition- Metal- Dichalcogenides Via Micro- Electro- Mechanical Actuation, Aldo Ivan Vidaña

Open Access Theses & Dissertations

In this thesis, strain-induced conductivity modulation in bi-layer molybdenum disulfide (MoS2) flakes is experimentally investigated and modeled. Uniaxial tensile strain in the MoS2 flakes is achieved using a micro-electro-mechanical (MEM) actuator. Conductivity ratios up to 400 are demonstrated. Theoretical predictions of conductivity versus applied voltage in the MEMS-MoS2 device match experimental data reasonably well using only the effective width of the TMDC flakes as the sole fitting parameter. The amount of strain induced in the MoS2 flakes was determined to be as high as 2.7% for one flake using the model fitted to the experiment data. The switching energy required …

Wetland Dynamics In A Terminal Lake Basin: Implications To Recent Hydroclimatic Evolution, Alexis Lucy Archambault

Theses and Dissertations

Spatiotemporal surface water extent dynamics are important factors to understand the evolution of land surface and hydrologic processes in the Prairie Pothole Region (PPR). Surface water bodies such as lakes and wetlands are highly responsive to the variability in air temperature and precipitation, making them effective indicators of long-term hydrological conditions. Increased levels of precipitation influencing subsequent fill and spill processes have facilitated the wetland behavior in the Devils Lake Basin (DLB) as well as the rising lake levels that has caused $1 billon in flood damages. To date, the impacts of recent wetting (1993-present) on surface water area dynamics …

Photography Methods To Understand Rural Resilience And Environmental Literacy: The Example Of Fracking In The Bakken, Bruce Evan Farnsworth

Theses and Dissertations

This dissertation examines the social and environmental impacts of fracking through deep ethnographic interviews and observations with farmers and ranchers living and leasing on the Bakken and Three Forks shale oil formations of western North Dakota, currently the second largest oil-producing region in the United States. This study investigates how photographic methods such as photo elicitation, repeat photography, and aerial photographs/maps elicit local knowledge and testify to the resilience of ranchers and farmers challenged by oil development and the alteration of their environment. Motivated by heritage, political marginalization and the pervasive loss of ruralness, the participants express several roles, among …

Empathetic Student-Centric Decisional Mindset: A Grounded Theory Study Of Teachers' Judgment Experiences, Joshua Sean Grover

Theses and Dissertations

Teachers must have the ability to make meaningful instructional decisions within the classroom. This ability to make decisions can be identified as a potential capacity within an organization within the broad theory of professional capital (Fullan & Hargreaves, 2013). Professional capital involves three mini-frameworks: social, human, and decisional capital. Literature supports the concepts of social and human capital investment within organizations (Gilead, 2009).

The conceptual framework for this study was based on the emergent theory of decisional capital. Hargreaves (2015) stated that it is within decisional capital that the capacities of experience, challenging and stretching, reflective practice, and teacher judgment …

Integrating Best Practice Into Fieldwork: A Narrative Inquiry Into The Level Ii Experiences Of Occupational Therapy Students, Cherie Graves

Theses and Dissertations

The purpose of this study was to explore occupational therapy student’s experiences with integrating best practice professional ideals during Level II fieldwork. Occupational therapy students in the United States complete 24 weeks of Level II fieldwork prior to graduation. Students transition from the classroom setting where they are prepared with knowledge about the professions best practice ideals, to the fieldwork setting where many factors impact the learning experience. Using qualitative research, a narrative inquiry was undertaken to explore the experiences of four occupational therapy students during their Level II fieldwork experiences. I interviewed each student on five occasions throughout the …

Method Development And Optimization For The Recovery Of Carbohydrates From A Microalga Species Of Chlorella Vulgaris By Combined Physical And Chemical Pre-Treatments, William Richard Hammann

Theses and Dissertations

A key focus of microalgae-based fuels/chemicals research and development has been on the lipids that many strains generate, but recent studies show that solely recovering these lipids may not be cost competitive with fossil-derived processes. However, if the carbohydrates can also be recovered and ultimately converted into useful chemical intermediates, this may improve the economics for microalgae-based sustainable product technologies.

In the present work, physical and chemical pre-treatments were performed on the Chlorella vulgaris microalgae strain to recover the carbohydrates from the biomass. A central composite design approach was used to optimize hydrolysis conditions including temperature, acid concentration, microalgae solid-to-liquid …