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Millennial-Scale Variability In The Indian Monsoon And Links To Ocean Circulation, Kimberly Anne Delong

Master's Theses and Capstones

Millennial-scale variability in the Indian monsoon was temporally linked to changes in global ocean circulation during the last glacial period, as evidenced by planktic-benthic foraminiferal stable isotope and trace element results from an intermediate depth sediment core from the northwestern Bay of Bengal (Core NGHP-01-19B; 18°58'N, 85°39'E; 1,422 m). Paired planktic foraminiferal Mg/Ca and d18Oc of G. ruber constrain sea surface temperatures and isolate millennial-scale variations in the d18O of surface waters (d18Osw) which resulted from changes in river runoff in the northwestern Bay. Concurrently with low d18Osw events, benthic foraminiferal d13C of Cibicidoides spp. decreased, suggesting an increased influence …

Separations Of Wealth: Inequality And The Erosion Of Checks And Balances, Kate Andrias

Faculty Scholarship

American government is dysfunctional: Gridlock, filibusters, and expanding presidential power, everyone seems to agree, threaten our basic system of constitutional governance. Who, or what, is to blame? In the standard account, the fault lies with the increasing polarization of our political parties. That standard story, however, ignores an important culprit: Concentrated wealth and its organization to achieve political ends. The only way to understand our current constitutional predicament – and to rectify it – is to pay more attention to the role that organized wealth plays in our system of checks and balances.

This Article shows that the increasing concentration …

Learning To Teach English Learners: Instructional Coaching And Developing Novice High School Teacher Capacity, Felice Atesoglu Russell

Faculty Articles

The number of English learners (ELs) in our schools continues to increase, and at the same time, the academic achievement of ELs consistently lags behind the achievement of native-English-speaking peers (Goldenberg & Coleman, 2010). These second language learners bring with them a set of special needs for teaching and learning, especially for mainstream content area teachers, who often have little or no specialized training for meeting these needs (Bunch, 2010). Although there is not yet extensive empirical work focused on how mainstream content teachers at the secondary level typically teach ELs or how they learn to more effectively teach these …

Predictors Of Enrolling In Online Courses: An Exploratory Study Of Students In Undergraduate Marketing Courses, Renee J. Fontenot, Richard E. Mathisen, Susan S. Carley, Randy S. Stuart

Faculty Articles

An exploratory study of undergraduate students enrolled in marketing courses at a Southeastern regional university was conducted to determine the motivations and characteristics of marketing students who plan to be online learners and examined for differences between those who have taken and those who have not taken online classes. An online survey of Likert scales, openended questions and demographic questions was sent via class learning management websites. A total of 165 students of the 438 invited to participate completed the survey. A structural model was developed using SMART-PLS to estimate the relationships of constructs that predict taking online courses. Results …

Secured Credit In Religious Institutions' Reorganizations, Pamela Foohey

Scholarly Works

Scholars increasingly assume that most businesses enter Chapter 11 with a high percentage of secured debt, which leads to a high percentage of cases ending in the sale of the debtor’s assets under section 363 of the Bankruptcy Code rather than with confirmation of a reorganization plan. However, evidence and discussions about “the end of bankruptcy” center on secured creditors’ role in the reorganizations of very large corporations. The few analyses of cross-sections of Chapter 11 proceedings suggest that secured creditor control is not nearly as omnipresent as asserted and that 363 sales are not as dominant as assumed.

This …

Design Optimization And Optical Characterization Of A High Temperature Solar Receiver, Samia Afrin

Open Access Theses & Dissertations

Concentrated solar power (CSP) is a fast forwarding technology in power generation sector because of its' competitive price, abundance in nature and the most important fact is its' energy storage capability. Among the four types of available CSP technology, central receiver has more potential concerning with high temperature, power block efficiency and levelized cost of energy (LCOE). Other than conventional type of receiver design, the concept of this work is very particular in a sense of its design novelty.

National Renewable Energy Laboratory (NREL) come up with a new concept of high temperature solar receiver called near black body (NBB) …

A Comparative Assessment Of Electrophysiological And Behavioral Performance In Individuals With Aphasia Responding To Spoken And Written Sentence Length Commands, Sha-Renae Alexander

Open Access Theses & Dissertations

The aim of this study is to investigate whether deficits in processing affect auditory and reading comprehension in the same manner. This study compared the behavioral and electrophysiologic performance of four individuals with aphasia and four participants with no brain damage responding to spoken and written sentence length commands using a modified version of the Revised Token Test (McNeil & Prescott, 1978). Electrophysiological responses were recorded from the scalp using event related potentials (ERP). The latency and amplitude of the N400 ERP component were measured and analyzed. Behavioral reaction times and correct responses were collected and examined. Performance differences between …

Dynamic Triggering In The Coso Geothermal Field, 2004-2013, Richard A. Alfaro-Diaz

Open Access Theses & Dissertations

We take advantage of EarthScope’s USArray Transportable Array (TA), regional seismic networks to investigate 154 M ≥ 7 earthquakes over a ten-year period (2004- 2013), in search of remotely triggered seismicity within the continental United States. We conduct an automated search to detect high frequency signals (which may indicate triggering of small local earthquakes) using a time window of 5 hours before and after each mainshock. The automated detection applies a short-term average (STA) to long-term-average (LTA) algorithms, to create a catalogue of detections. Using the catalog we search for an increase in detection rates after each main-shock. Sharp increases …

Acculturation, Psychological Distress, And Smoking In Latinos Living With Hiv/Aids, Jessica Armendariz

Open Access Theses & Dissertations

In the United States smoking cigarettes is the leading cause of preventable death, and smoking is of particular health concern among people living with HIV. Depression has been consistently linked to smoking in the literature, and data indicate that acculturation to the U.S. is associated with increased depression among Latinos.

This study examined if acculturation moderates the impact of depression on smoking behavior among Latinos living with HIV through the mediating effect of social support. The results may extend to the sociopsychological construct of culture. We studied 300 Latinos who live with HIV on the U.S./Mexico border.

Results demonstrated there …

Restraint Stress Alters Pro-Inflammatory Cytokine Expression And Increases Superoxide Dismutase In The Rat Hypothalamus And Hippocampus, Kristina Isabel Barron

Open Access Theses & Dissertations

The impact of restraint stress on changes in cytokine expression and oxidative stress markers in hippocampal (Hipp) and hypothalamic (Hyp) regions of the brain, were assessed in a rat model. In addition, immune and inflammatory variables were assessed in peripheral blood. Male Wistar rats were acutely (30 min) or repeatedly (30 min/d for 14 consecutive days) exposed to a restraint stress, or maintained as non-stressed controls. At the time of sacrifice, whole blood and brain tissues enriched in Hyp or Hipp regions were collected; blood was collected with EDTA as an anticoagulant and centrifuged to yield plasma. All tissue samples …

Challenges In Assessing College Students' Conception Of Duality: The Case Of Infinity, Grace Olutayo Babarinsa-Ochiedike

Open Access Theses & Dissertations

Interpreting students' views of infinity posits a challenge for researchers due to the dynamic nature of the conception. There is diversity and variation among students' process-object perceptions. The fluctuations between studentsâ?? views however reveal an undeveloped duality conception. This study examined college students' conception of duality in understanding and representing infinity with the intent to design strategies that could guide researchers in categorizing students' views of infinity into different levels.

Data for the study were collected from N=238 college students enrolled in Calculus sequence courses (Pre-Calculus, Calculus I through Calculus III) at one of the southwestern universities in the U.S. …

Three Essays On Global Ict Phenomenon: Productivity Paradox, Organizational Ict Use, And Privacy In Social Networks, Faruk Arslan

Open Access Theses & Dissertations

This Dissertation aims to investigate the global diversity in information systems by studying three distinctive phenomena. The first essay investigates the existence of "IT Productivity Paradox" within firms operating in developing countries using an empirical approach. IT Productivity Paradox has been a widely investigated topic within the context of developed countries and primarily studied within the context of developing countries using a single country. Our research addresses a gap in the literature, which is the study of IT Productivity Paradox across several developing countries with diverse characteristics. The second essay studies the contextual factors (firm characteristics and perception of external …

Anything You Might Do, Elena Christine Bitner

Open Access Theses & Dissertations

Three girls at seventeen, teetering on the cusp of adulthood, set out on a journey to escape grief, abuse, and neglect in their homes. With nothing but a few hundred dollars and what they can throw on their backs, they pile into a tiny Toyota pick-up and set out to cross the country to make a new life on the east coast. As they crawl across the desert, secrets surface that threaten their relationships and their lives. The girls stumble into a world of drugs and violence and they find themselves faced with an irrevocable choice. Will they be able …

Salt And Mineral Recovery From High Salinity Waters, Osvaldo Alejandro Broesicke

Open Access Theses & Dissertations

Natural salt springs in the Salt Fork Basin in Crosby County, Texas, result in the natural salt pollution of the Brazos River, rendering it unusable for most potable purposes. Previous research indicates that by intercepting the source of the pollution, water quality of the Brazos River can be greatly improved. This paper investigates and assesses two strategies for salt and mineral recovery using natural brine collected from the Salt Fork Basin, the first of which is presented in a separate work.

The research described in this paper evaluates the potential of a desulfation, soda-caustic softening, acidification/decarbonation, and evaporation process to …

Evaluating Methods Of Field-Based 3d Visualization And Their Application To Mapping Metamorphic Terranes: An Example From The Panamint Mountains, California, Jade Ashley Brush

Open Access Theses & Dissertations

Field geology has traditionally relied on 2D, paper-based workflows, but digital mapping techniques are rapidly replacing these outdated methods because they allow for more efficient and accurate mapping. This research applies digital mapping techniques and two terrestrially-based 3D visualization technologies, photogrammetry and Light Detection and Ranging (LiDAR), to the study of metamorphic terranes in the Panamint Mountains, California. This study reports on the spatial accuracy of TINs (triangulated irregular networks) generated from both photogrammetry and ground-based LiDAR using a terrestrial laser scanner (TLS) and discusses how spatial accuracy can be increased. Two levels of comparison were used to test spatial …

Evaluation Of Point Of Use Drinking Water Treatment Systems For Colonias In The Southwest United States, Isaac Campos Flores

Open Access Theses & Dissertations

Clean drinking water is often taken for granted in first world countries, such as the United States. However, thousands of colonias residents (settlements in the Southwest US that lack access to basic infrastructure) still lack access to clean drinking water. Such is the case in the Paso Del Norte Region. In Doña Ana County, NM, and El Paso County, TX, colonia residents typically rely on shallow domestic wells and hauled water, respectively. However, both water sources can pose health concerns from elevated total dissolved solids and microbiological contamination. With connection to centralized water treatment and distribution still years away, colonias …

Reinterpretation Of The Mesozoic Thrust Complex Of The Southern Spring Mountains, Nevada, Warren Harding Allen

Open Access Theses & Dissertations

The east verging Keystone thrust fault in the southern Spring Mountains west of Goodsprings, Nevada, is mapped with a sharp bend in its trace near Keystone Wash. This bend was previously explained in the context of out-of-sequence thrusting and a salient-recess relationship along the thrust system; a simple redirection of the Keystone thrust to a north verging thrust. Recent geochronological studies indicate that the east verging Keystone thrust to the north of Keystone Wash formed between 83-103Ma. Approximately 5 kilometers to the east a north verging branch of the fault system overlies rocks as young as 99Ma. At the location …

Health And Stress Symptoms In University Professors And Their Relationship With The Process Of Obtaining A Permanent Position, Irene Concepcion Carrillo-Saucedo

Open Access Theses & Dissertations

This research study used a quantitative, correlational method to examine health and stress symptoms in university professors and their relationship with the process of obtaining a permanent position and participation in a merit pay program. The Stress Profile Inventory (PEN) was used to measure professors’ health habits, social support network, Type A behavior, cognitive hardiness, coping styles and psychological well-being. An original measure with a Likert-type scale was used to measure health status. The questionnaires were distributed to 104 professors from the Universidad Autónoma de Ciudad Juárez (UACJ) who provided voluntary participation. Based on the results of the study, certain …

Aerosol Physical And Chemical Properties Over Tropical Atlantic Ocean, Elsa Castillo

Open Access Theses & Dissertations

The atmospheric aerosol mass size distributions, modal characteristics, and a comparative analysis of the characteristic of PM2.5 versus trace gases: CO, O3, and SO2 over tropical Atlantic Ocean have been evaluated for Nov-Dec 2013. This study took place during the IX AEROSE expedition while the National Oceanic and Atmospheric Administration (NOAA) research vessel Ronald H. Brown traveled south along 23°W between 3°N and 5°S.

Aerosol mass size distributions were measured directly with a California Instruments Model PC-2H Quartz Crystal Microbalance (QCM). The corresponding values of average mass for accumulation, nuclei and coarse mode obtained were: 0.00124±0.00077, 0.00506±0.00254, and 0.00176±0.00114 μg/m …

Short-Term Forecasting Analysis Of Municipal Water Demand In El Paso, Texas, Alejandro Ceballos

Open Access Theses & Dissertations

Short-term water demand forecasts inform decisions regarding budgeting, rate design, water supply system operations, and effective implementation of conservation policies. This study develops a Linear Transfer Function (LTF) forecasting model for El Paso, Texas, a growing city located in the desert Southwest region of the United States. The model is used to generate monthly-frequency out-of-sample simulations of water demand for periods when actual demand is known. To measure the accuracy of the LTF projections against viable alternatives, a set of benchmark forecasts is also developed. Both descriptive accuracy metrics and formal statistical tests are used to analyze predictive performance. The …

Low Level Lead Exposure And Inflammatory Markers In The Brains Of C57bl/6j Mice, Miguel A. Cervantes

Open Access Theses & Dissertations

Background and Significance: Prior studies have indicated that early chronic low-level lead exposure may be associated with adverse effects on motor and cognitive functions. The mechanisms by which low-level lead affects brain function are unknown. Objectives: The current study aimed to (1) determine whether early chronic low-level lead exposure altered the expression of pro- or ant-inflammatory cytokines and markers of oxidative stress in mouse brain studied at two ages, pre-adolescence (PND 28) and early adulthood (PND 40); and (2) in the same pre-adolescent and early adulthood mice, compare and contrast the levels of pro- or ant-inflammatory markers in three brain …

Novel Endohedral Derivatives Of Sc3n@C2n (N = 34, 40) And Unique Tether Controlled Bis-Functionalization Of Fullerenes, Maira Raquel Ceron Hernandez

Open Access Theses & Dissertations

Since the discovery of fullerenes in 1985, their exohedral functionalization has been necessary to increase their solubility and explore their properties and potential applications in materials science and medicinal chemistry. This Thesis provides a short overview of the importance of electronic, size and shape complementarity in determining the structures of specific endohedral fullerene compounds. This is followed by a description of a new method for the separation of scandium nitride endohedral fullerenes Sc3N@C2n (n = 34, 39 and 40), and their monofunctionalization.

We also present the regioselective synThesis of easily isolable bis-derivatives of C60, C70, and M3N@Ih-C80 (M = Sc, …

At The Intersection Of Deferred Action For Childhood Arrivals, The Migration Trust Network And Labor, Mario Javier Chavez

Open Access Theses & Dissertations

This study unpacks the intersection of Deferred Action for Childhood Arrivals, the Migration Trust Network and Labor. I use 9 in-depth qualitative interviews to address how such policies are affecting the labor acquisition and labor outcomes of DACA recipients. The Migrant trust network remained important for DACA recipients, although in a more indirect and macro-level way than described in Flores-Yeffal (2013). In particular, DACA recipients relied on the collective efficacy embedded within the community to facilitate their job search. Additional, migrant trust networks function differently according to the DACA recipients' level of education, but to fully benefit from the advantages …

Study Of A Directly Heated Oxy-Fuel Supercritical Power Generation System, A S M Arifur Rahim Chowdhury

Open Access Theses & Dissertations

The Directly heated supercritical oxy-fuel gas turbines have the potential to become an important addition to current power generation systems. They provide a higher thermal efficiency and more effective carbon capture techniques than existing gas turbines. Due to the higher density of the working fluids, the turbomachinery size in these systems can be reduced significantly; this will facilitate to minimize the operational cost. To achieve supercritical working fluid at the turbine inlet combustion needs to be conducted under enormous amounts of pressure; these values are is about 10 times those found in the present gas turbines. Additionally, existing material operational …

The Impacts Of Health Status And Exposure To Environmental Toxins On Children's Grade Point Average In El Paso, Texas, Stephanie Elizabeth Clark

Open Access Theses & Dissertations

Studies in the US have found that both exposure to environmental toxins and children's general health status negatively impact children's academic achievement. This Thesis will be made of up two papers. The first examines the impact of exposure to residential air toxins from a variety of sources on student's academic achievement and the second paper incorporates a measure of children's general health status into the statistical model from the first paper. This Thesis employs National Air Toxics Assessment (NATA) risk estimates from a variety of sources and individual-level data collected through a mail survey of fourth and fifth grade school …

Characterization Of Kendex® 0834 (Heavy Resins) & Kendex® 0897 (Light Resins), Victor Correa

Open Access Theses & Dissertations

Characterization of crude oil and some of its refined products has always been a challenge in the refining industry. This is mainly due to the high molecular complexity of crude oil. In this research, Heavy and Light Resins extracted from Penn Grade crude oil were analyzed with a wide variety of techniques, ranging from X-Ray Diffraction, Electron Microscopy, Fourier Transformed Infrared, C-13 Nuclear Magnetic Resonance, and chromatographic methods. An asphaltene extraction protocol was performed on both products. Only the Heavy Resin sample yielded a low amount of asphaltene. Results show that both Resins have a high degree of carbon branching, …

Parental Perception On The Impact Of Continued Use Of Baby Sign On Stress And Parent-Child Interaction: Follow-Up Survey One Year Post Hoc Of A Baby Sign Workshop, Brenda G. Compean

Open Access Theses & Dissertations

Introduction: Past research has indicated that teaching baby sign language to infants can be stressful for parents. Thus, a previous study to test this assertion was conducted. A baby sign workshop was conducted and consisted of teaching the parents approximately 200 signs and information on implementation. Results indicated that parents did not report stress as a result of using baby sign with their children. The current case study administered a modified version of the baby sign workshop survey one year post hoc. Purpose: To observe continued use of baby sign, as well as parental perception of the impact of baby …

Serine Palmitoyltransferase And Giardial Encystation, Monica Delgado

Open Access Theses & Dissertations

Giardia lamblia is a flagellated protozoan parasite responsible for chronic diarrheal disease in humans and animals. Giardia has minimal lipid synThesis machinery and the majority of its lipids are obtained from the small intestine of humans where the trophozoites colonize. Recent results from our laboratory indicate that sphingolipids (SLs) are also important for Giardia and they regulate encystation and cyst production. Only five SL genes are present in this parasite and they are differentially regulated during encystation. In my studies, I found that giardial serine palmitoyltransferase (gSPT) activity is upregulated in encysting cells, suggesting it might play an important role …

Structural Organization Of The Connections Between Neurons Of The Paraventricular And Lateral Hypothalamic Regions In The Adult Male Rat, Berenise De Haro

Open Access Theses & Dissertations

The hypothalamus is a major integrator of homeostatic signals in the brain; within the hypothalamus, there are sub-regions with specific roles in regulating energy balance. For example, the lateral hypothalamic area (LHA) has been classically associated with feeding behaviors, and contains two major orexigenic cell populations expressing the neuropeptides melanin concentrating hormone (MCH) or hypocretin 1/orexin A (H/O). Similarly, the paraventricular nucleus of the hypothalamus (PVH) integrates information to mediate neuroendocrine and autonomic responses related to ingestive behaviors. The PVH has also been implicated directly in the control of feeding. However, the precise structural and functional interactions between these two …

Convergence And Persistence In Corporate Law And Governance, Jeffrey N. Gordon

Faculty Scholarship

This chapter discusses the question of “convergence or persistence” in corporate law and governance. It first considers efforts to measure convergence directly by focusing on the evolution of law-on-the-books governance provisions before analyzing capital market evidence on convergence, with particular emphasis on capital market indicators such as the decline in “cross-listings” onto US stock exchanges by firms from jurisdictions with weaker investor protection and the increase in initial public offerings (IPOs) on emerging market stock markets. The chapter proceeds by reviewing evidence of divergence, especially “divergence within convergence,” and the failure of the European Union to produce more convergent corporate …