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Design Principle on Carbon Nanomaterials Electrocatalysts for Energy Storage and Conversion

Description: We are facing an energy crisis because of the limitation of the fossil fuel and the pollution caused by burning it. Clean energy technologies, such as fuel cells and metal-air batteries, are studied extensively because of this high efficiency and less pollution. Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are essential in the process of energy storage and conversion, and noble metals (e.g. Pt) are needed to catalyze the critical chemical reactions in these devices. Funct… more
Date: May 2017
Creator: Zhao, Zhenghang
Partner: UNT Libraries
open access

Exceptional Properties in Friction Stir Processed Beta Titanium Alloys and an Ultra High Strength Steel

Description: The penchant towards development of high performance materials for light weighting engineering systems through various thermomechanical processing routes has been soaring vigorously. Friction stir processing (FSP) - a relatively new thermomechanical processing route had shown an excellent promise towards microstructural modification in many Al and Mg alloy systems. Nevertheless, the expansion of this process to high temperature materials like titanium alloys and steels is restricted by the limi… more
Date: May 2017
Creator: Tungala, Vedavyas
Partner: UNT Libraries
open access

Elucidation of Photoinduced Energy and Electron Transfer Mechanisms in Multimodular Artificial Photosynthetic Systems

Description: Multimodular designs of electron donor-acceptor systems are the ultimate strategy in fabricating antenna-reaction center mimics for artificial photosynthetic applications. The studied photosystems clearly demonstrated efficient energy transfer from the antenna system to the primary electron donor, and charge stabilization of the radical ion pair achieved with the utilization of secondary electron donors that permits either electron migration or hole transfer. Moreover, the molecular arrangement… more
Date: May 2017
Creator: Lim, Gary Lloyd
Partner: UNT Libraries
open access

Teacher Perceptions of Pay-for-Performance: An Investigation of Four Middle School Pay-for-Performance Programs in a Large Urban School District

Description: In this study, I explored the different perceptions of teachers in a large urban school district in Texas towards a pay-for-performance program used on their respective campuses between 2011-2016. In total, 97 teachers from four different middle school campuses participated in this study. A descriptive analyst was conducted on teacher responses to an online survey to answer the research questions examined in this study: 1) What are teachers' perceptions of the pay-for-performance program's impa… more
Date: May 2017
Creator: Whitaker, Norbert L., Sr.
Partner: UNT Libraries
open access

"How Can We Know the Dancer from the Dance?": Cognitive Poetics and William Butler Yeats's Poetry

Description: Cognitive poetics, the recently developed field of literary theory which utilizes principles from cognitive science and cognitive linguistics to examine literature, is applied in this study to an exploration of the poetry of William Butler Yeats. The theoretical foundation for this approach is embodiment theory, the concept from cognitive linguistics that language is an embodied phenomenon and that meaning and meaning construction are bodily processes grounded in our sensorimotor experiences. A… more
Date: May 2017
Creator: Pagel, Amber Noelle
Partner: UNT Libraries
open access

Partition Properties for Non-Ordinal Sets under the Axiom of Determinacy

Description: In this paper we explore coloring theorems for the reals, its quotients, cardinals, and their combinations. This work is done under the scope of the axiom of determinacy. We also explore generalizations of Mycielski's theorem and show how these can be used to establish coloring theorems. To finish, we discuss the strange realm of long unions.
Date: May 2017
Creator: Holshouser, Jared
Partner: UNT Libraries
open access

Miranda Comprehension and Reasoning: An Investigation of Miranda Abilities in Adult Inpatients

Description: Nearly 700,000 suspects with mental disorders are arrested and Mirandized each year. The current study systematically examined the effects of cognitive deficits and psychological symptoms on both Miranda comprehension and reasoning. The current sample was comprised of 85 adult psychiatric inpatients recruited from University Behavioral Health (UBH), a private psychiatric hospital in North Texas. Unexpectedly, most inpatients demonstrated pervasive deficits in their immediate recall of a repres… more
Date: May 2017
Creator: Winningham, Darby B.
Partner: UNT Libraries
open access

Transformative Learning and Teacher Beliefs: A Comparative Study of International Teacher Experiences

Description: This project aims to explore the beliefs of international teachers regarding the students with whom they work, and the change in those beliefs over time. Participant observation, interviews, and questionnaires were used as tools of collection to address the following research questions: How did teachers' beliefs about students change over time? What variables were significantly associated with the rate of change in teacher beliefs about students? What types of challenges did teaches face whi… more
Date: May 2017
Creator: Barnes, Valerie Rose
Partner: UNT Libraries
open access

The Geography of Maternal Health Indicators in Ghana

Description: Ghana is identified among the developing countries with high maternal mortality ratio in Africa. This study unpacked the Demographic and Health Survey data by examining the maternal health indicators at the district level using GIS methods. Understanding the geographic patterns of antenatal care, place of delivery, and skilled birth attendants at the small scale will help to formulate and plan for location-specific health interventions that can improve maternal health care behavior among Ghanai… more
Date: May 2017
Creator: Iyanda, Ayodeji Emmanuel
Partner: UNT Libraries
open access

Practicing Relevance: The Origins, Practices, and Future of Applied Philosophy

Description: This dissertation takes up the question of the social function of philosophy. Popular accounts of the nature and value of philosophy reinforce long-standing perceptions that philosophy is useless or irrelevant to pressing societal problems. Yet, the increasingly neoliberal political-economic environment of higher education places a premium on mechanisms that link public funding for research to demonstrations of return on investment in the form of benefitting broader society. This institutional … more
Date: May 2017
Creator: Barr, Kelli Ray
Partner: UNT Libraries
open access

Structure Evolution and Nano-Mechanical Behavior of Bulk Metallic Glasses and Multi-Principal Element Alloys

Description: Bulk metallic glasses and multi-principal element alloys represent relatively new classes of multi-component engineering materials designed for satisfying multiple functionalities simultaneously. Correlating the microstructure with mechanical behavior (at the microstructural length-scales) in these materials is key to understanding their performance. In this study, the structure evolution and nano-mechanical behavior of these two classes of materials was investigated with the objective of funda… more
Date: May 2017
Creator: Mridha, Sanghita
Partner: UNT Libraries
open access

Protests in China: Why and Which Chinese People Go to the Street?

Description: This research seeks to answer why and which Chinese people go to the street to protest. I argue that different sectors of Chinese society differ from each other regarding their tendencies to participate in protest. In addition to their grievances, the incentives to participate in protest and their capacities to overcome the collective action problem all needed to be taken into account. Using individual level data along with ordinary binary logistic regression and multilevel logistic regression … more
Date: May 2017
Creator: Chen, Yen-Hsin
Partner: UNT Libraries
open access

Building an Effective Piano Technique while Avoiding Injury: A Comparison of the Exercises in Alfred Cortot's "Rational Principles of Pianoforte Technique" and Carl Tausig's "Daily Studies for the Pianoforte"

Description: It is the teacher's responsibility to guide students in building an effective and injury-free piano technique. Improper technique, poor training and bad posture at the instrument all may cause problems such as lack of muscle control, weakness, or tension in the hands. Many teachers are interested in finding information about specific exercises dealing with finger strengthening, stretching, and warm-up strategies, as well as guidelines for safe practicing. It is therefore important for both teac… more
Date: May 2017
Creator: Woo, Laehyung
Partner: UNT Libraries
open access

An Argument in Favor of the Saxhorn Basse (French Tuba) in the Modern Symphony Orchestra

Description: The French tuba was a much-needed addition to the brasswind musical instrument family, adding depth, projection and a unique color to French orchestral literature. Its ancestors the serpent and ophicleide both lacked the tonal stability and sonic power to adequately present the bass wind role in a robust orchestra. Through the efforts of its developer and patent-holder Adolphe Sax, the French tuba made converts among players and composers, effectively creating its own niche in music history. Mu… more
Date: May 2017
Creator: Kleinsteuber, Carl
Partner: UNT Libraries
open access

A Phenomenological Study of Gay and Lesbian College Students' Spiritual Experiences at Religious Higher Education Institutions

Description: Despite recent scholarly interest in college students' spirituality and spiritual development, as well as research indicating that students are interested in spirituality and have a strong desire to integrate spirituality into their lives, few researchers have addressed the spiritual experiences of gay and lesbian college students. Utilizing a phenomenological qualitative approach, I explored the spiritual experiences of nine gay and lesbian college students at two religiously affiliated unive… more
Date: May 2017
Creator: Bryan, Vanessa Roberts
Partner: UNT Libraries
open access

Object Recognition Using Scale-Invariant Chordiogram

Description: This thesis describes an approach for object recognition using the chordiogram shape-based descriptor. Global shape representations are highly susceptible to clutter generated due to the background or other irrelevant objects in real-world images. To overcome the problem, we aim to extract precise object shape using superpixel segmentation, perceptual grouping, and connected components. The employed shape descriptor chordiogram is based on geometric relationships of chords generated from the pa… more
Date: May 2017
Creator: Tonge, Ashwini
Partner: UNT Libraries
open access

Culturally Competent Evaluations

Description: Significant growth in the number of English language learners (ELLs) in U.S. schools is anticipated to continue, demanding that educators and evaluators have the skills necessary to distinguishing language difference from disability and provide appropriate services to these students. However, little research exists examining the role of evaluator's cultural competence in evaluating ELLs for special education; furthermore, what does exist shows that many evaluators report low levels of self-eff… more
Date: May 2017
Creator: Chen, Cristina Rodríguez
Partner: UNT Libraries
open access

Using Posterior Predictive Checking of Item Response Theory Models to Study Invariance Violations

Description: The common practice for testing measurement invariance is to constrain parameters to be equal over groups, and then evaluate the model-data fit to reject or fail to reject the restrictive model. Posterior predictive checking (PPC) provides an alternative approach to evaluating model-data discrepancy. This paper explores the utility of PPC in estimating measurement invariance. The simulation results show that the posterior predictive p (PP p) values of item parameter estimates respond to various… more
Date: May 2017
Creator: Xin, Xin
Partner: UNT Libraries
open access

Cardiovascular Response to a Behavioral Restraint Challenge: Urge Magnitude Influence in Men and Women

Description: Agtarap, Wright, Mlynski, Hammad, and Blackledge took an initial step in providing support for the predictive validity of a new conceptual analysis concerned with behavioral restraint, defined as active resistance against a behavioral impulse or urge. The current study was designed to partially replicate and extend findings from their study, employing a common film protocol and a procedure for inducing low- and high levels of fatigue. Analyses on key data indicated that the fatigue manipulati… more
Date: May 2017
Creator: Mlynski, Christopher
Partner: UNT Libraries
open access

Creating Discussion: An Auteur Analysis of Films Directed by Adrian Lyne

Description: This thesis examines the various "signature" threads that are present within the "oeuvre" of the Hollywood filmmaker Adrian Lyne. The goal of this thesis is to showcase both how and why Lyne can be thought of as an auteur and to open up his films to new and previously unexplored meanings. Lyne's eight feature films are analyzed in-depth individually and in comparison to one another from a variety of theoretical frameworks and points of focus in each of the body chapters.
Date: May 2017
Creator: Oliver, Stephanie
Partner: UNT Libraries
open access

Probabilistic Analysis of Contracting Ebola Virus Using Contextual Intelligence

Description: The outbreak of the Ebola virus was declared a Public Health Emergency of International Concern by the World Health Organisation (WHO). Due to the complex nature of the outbreak, the Centers for Disease Control and Prevention (CDC) had created interim guidance for monitoring people potentially exposed to Ebola and for evaluating their intended travel and restricting the movements of carriers when needed. Tools to evaluate the risk of individuals and groups of individuals contracting the disease… more
Date: May 2017
Creator: Gopalakrishnan, Arjun
Partner: UNT Libraries
open access

Relations among Parental Responding to Offspring Emotion, Emotion Approach Coping, and Posttraumatic Stress Symptoms among Trauma-Exposed College Students

Description: The present investigation evaluated whether dispositional use of emotional approach coping partially accounts for the association between parental response to emotional expression and posttraumatic stress symptoms (PTSS) in a sample of 252 trauma-exposed individuals drawn from a pool of college students and college-age members of the community at-large. An online survey assessed parental reactions to participants' negative emotions during childhood (i.e., offspring retrospective report), as wel… more
Date: May 2017
Creator: Dziurzyński, Kristan E.
Partner: UNT Libraries
open access

Spectral Evidence

Description: Spectral Evidence is a collection of poems that instigates a variety of omens, signs, divinations, and folktales to explore the concept of wish fulfillment. They arise in obedience to the compulsion to repeat past dramas brought on by failed love, the nostalgia of childhood, the damning legacy of language, the restriction of gender roles, death, etc. In order to quell these anxieties, the speaker looks beyond the self to both history and mythology, often invented mythologies as an attempt to co… more
Date: May 2017
Creator: Edwards, Trista
Partner: UNT Libraries
open access

The Effectiveness of Hybrid Problem-Based Learning versus Manual-Based Learning in the Microbiology Laboratory

Description: Promising results from the use of problem-based learning (PBL) as a teaching method in medical programs have encouraged many institutions to incorporate PBL into their curricula. This study investigates how applying hybrid-PBL (H-PBL) in a microbiology laboratory impacts students' higher-order thinking as compared to applying a lecture-based pedagogy. The experimental design compared the learning outcomes of two groups of students: the control group and the H-PBL group, for whom PBL cases compr… more
Date: May 2017
Creator: Alharbi, Najwa
Partner: UNT Libraries
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