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2,581 Matching Results
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Transgenerational Responses to Environmental Stressors in Vertebrates: From Organisms to Molecules
Genomic modifications occur slowly across generations, whereas short-term epigenetic transgenerational inheritance of adaptive phenotypes may be immediately beneficial to large numbers of individuals, acting as a bridge for survival when adverse environments occur. In this study we used dietary exposure to crude oil as an example of an environmental stressor to assess its effects from the molecular to the organismal levels in piscine and avian animal models. In addition, we assessed the role of the parental exposures on their offspring F1 generation. The research developed in this dissertation has contributed to several areas of investigation including molecular biology, animal physiology, and evolutionary biology. The quantitative information from these studies may be utilized to supplement information regarding the proximate and ultimate effects of environmental stressors on fish and bird populations. Furthermore, this information may be used as additional support for understanding the conservation of the responses from the molecular to the whole organismal levels across the vertebrate taxa, as well as their implications for population survival and maintenance. Additionally, the zebrafish (Danio rerio), the Siamese fighting fish (Betta splendens) and the king quail (Coturnix chinensis) have proven to be excellent models to start building a strong basis for understanding the effects …
Date:
December 2019
Creator:
Martinez Bautista, Naim
System:
The UNT Digital Library
Examining the Psychological Resiliency of Latino Immigrants in Five Texas Cities: Policy, Economics, and Politics – The Case of the Latino Community
This dissertation examines the impact of city-level characteristics (immigration-friendliness index, unemployment rate, and the percentage of Democrat Party votes) on the psychological resiliency of Latino immigrants. In the light of increased attention on the immigrant issue throughout the world, this study aims to develop our understanding of the factors that have the effect on the resiliency of immigrant populations. This dissertation examines these different characteristics by examining five different cities in Texas: Austin, Dallas, Fort-Worth, Houston, and San Antonio. The survey was distributed through the Amazon Mechanical Turk (MTurk) to those individuals who define themselves Hispanic or Latino. Results suggest that the city characteristics have a significant impact on the resiliency of Latino immigrants suggesting that local governments have a potential capability to increase the resiliency of the immigrant groups in the United States by embracing the notion that immigrants should be integrated into the fabric of the local community.
Date:
December 2019
Creator:
Icer, Mehmet Mustafa
System:
The UNT Digital Library
Examining the Impact of Community Policing on Public Attitudes toward Fear of Terrorism, Resilience, and Satisfaction with Police in the Face of New Terrorism
This dissertation examines the impact of citizen's perception of community policing on public attitudes toward fear of terrorism, resilience for a future terrorist attack, and satisfaction with the police in the face of new terrorism. In particular, considering the changing nature of terrorism in recent years as a response to the centralized homeland security efforts, this dissertation attempts to develop our understanding about the extent to which community policing could be a strategy in dealing with terrorism fear among citizens, in building up resilience for future terrorist attacks, and to increase citizens' satisfaction with the police in order to enhance the quality of life in the face of new terrorism. Additionally, this dissertation examines the impact of the variation in the level of community policing implementation on public attitudes toward fear of terrorism, resilience for a future terrorist attack, and satisfaction with the police. Data was collected through an online survey conducted in the cities of Arlington and Frisco, Texas. The survey distributed to the citizens through the Amazon Mechanical Turk (MTurk) platform. These cities were selected based on a community policing scale which was created through the help of the Law Enforcement Management and Administrative Statistics (LEMAS) survey. Results …
Date:
December 2019
Creator:
Ayazma, Tayfun
System:
The UNT Digital Library
The Impact of Early Childhood Education on Academic Achievement
Two groups of students were compared to determine the impact of early intervention at the Early Childhood School on academic outcomes in later elementary school years for both math and reading. Students who were determined to be disadvantaged in some way, either by income, limited English proficiency, or having been identified as needing specialized instruction and who attended an early intervention program, prior to kindergarten, were compared to a similar group who did not attend the intervention program. Scores on district level assessments in math and reading were tracked for both groups of students through the third grade. Scores on high stakes standardized testing of the students in third grade were also analyzed. Results indicated that students in the control group outperformed students in the treatment group on the majority of district level assessments. However, the opposite was true for high stakes testing where the treatment group outperformed the control group on a consistent basis. These results were consistent, regardless of the nature of the disadvantage. Students who attended the prekindergarten program at the Early Childhood School had higher scores on the State of Texas Assessment of Academic Readiness (STAAR) exam than disadvantaged students who did not attend. Since this …
Date:
December 2019
Creator:
Davis, Jodi
System:
The UNT Digital Library
Deep Learning Approach for Sensing Cognitive Radio Channel Status
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Use of this item is restricted to the UNT Community
Cognitive Radio (CR) technology creates the opportunity for unlicensed users to make use of the spectral band provided it does not interfere with any licensed user. It is a prominent tool with spectrum sensing functionality to identify idle channels and let the unlicensed users avail them. Thus, the CR technology provides the consumers access to a very large spectrum, quality spectral utilization, and energy efficiency due to spectral load balancing. However, the full potential of the CR technology can be realized only with CRs equipped with accurate mechanisms to predict/sense the spectral holes and vacant spectral bands without any prior knowledge about the characteristics of traffic in a real-time environment. Multi-layered perception (MLP), the popular neural network trained with the back-propagation (BP) learning algorithm, is a keen tool for classification of the spectral bands into "busy" or "idle" states without any a priori knowledge about the user system features. In this dissertation, we proposed the use of an evolutionary algorithm, Bacterial Foraging Optimization Algorithm (BFOA), for the training of the MLP NN. We have compared the performance of the proposed system with the traditional algorithm and with the Hybrid GA-PSO method. With the results of a simulation experiment that this …
Date:
December 2019
Creator:
Gottapu, Srinivasa Kiran
System:
The UNT Digital Library
A Performance-and-Analysis Approach to a Cadential Ambiguity: Chopin's Piano Sonata No. 2 in B-flat minor, Op. 35, First Movement
Pianists often have trouble in determining where a phrase ends, or in other words, cadence identification. This is especially true of certain cadences that can be considered either as half cadences or authentic cadences. This analytically ambiguous cadential point can result in different performance decisions, so pianists should make informed decisions about what kind of cadence it is. This study aims to investigate such cadential ambiguity shown at points of phrase boundaries by focusing on Chopin's Piano Sonata No. 2 in B-flat minor, Op. 35, first movement. I offer both possibilities (a half cadence or an authentic cadence) at the phrase ending, suggesting a performance-related strategy based on each possibility. My objective is not to support only one cadential status, but to bring up the cadential problem from the analytical perspective and to demonstrate how cadence identification affects performance results. The dissertation is divided into two parts: analysis and performance, so it relies on a combined method of analytical terminologies and performance-related musical elements. In the analysis, the terminology of William Caplin is employed. The performance part refers to several method books written by prestigious piano pedagogues. After an introduction in Chapter 1, Chapter 2 reviews some literature on cadences. …
Date:
December 2019
Creator:
Kim, Yereum
System:
The UNT Digital Library
Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems
Energy- and electron-transfer processes in molecular and supramolecular donor-acceptor systems are of current interest in order to develop light-energy harvesting systems through designing covalently linked donor-acceptor systems or utilizing self-assembled donor-acceptor systems. The research presented in this dissertation deals with the electrochemical, anion binding, and photochemical studies of various oxoporphyrinogen (OxPs), porphyrin, corrole, and phenothiazine systems. The first chapter provides a brief introduction to the material discussed in the subsequent chapters. The second chapter discusses the bromination of meso-tetraarylporphyrings and how that affects their electrochemical, catalytic, and other properties. Bromination of these porphyrins and oxoporphyrinogens allow the HOMO-LUMO gap to increase revealing blue-shifted absorption. Brominated OxPs and bis-crown ether OxP self-assembled with anions depending on strength of the anion and size of the binding site. The addition of crown ethers allows a cation binding site which makes a self-assembled donor-acceptor supramolecular system.Chapters 5 and 6 discuss a series of donor-acceptor conjugates based on zinc porphyrin as the electron donor and copper(III) corrole as the electron acceptor. These studies illustrate the importance of copper(III) corrole as a potent electron acceptor for the construction of energy harvesting model compounds, and constitute the first definitive proof of charge separation in ZnP-CuIIIC systems.Chapter 7 …
Date:
December 2019
Creator:
Webre, Whitney Ann
System:
The UNT Digital Library
Marc-André Hamelin's "Variations on a Theme of Paganini": The Effect of Polystylism through Pastiche and Musical Borrowing in Variations
Paganini's 24th caprice still remains to this day one of the most celebrated themes in classical music history. Many composers have used this theme to create variations and each composer attempted to produce stylistically unique variations on this piece. Hamelin's Variations on a Theme of Paganini stands out because his piece incorporates musical borrowing and many different composers' styles. His variations integrate music from different centuries, using pastiche and musical borrowing from figures such as Beethoven, Liszt, Brahms, Chopin, and Rachmaninoff. More provocatively, Hamelin's variations reach outside of Classical music, even adopting elements from salsa and friska. The spectrum of composers and styles included in this set are so radical and shocking that it creates a parody of not only Paganini's theme, but also the tradition of theme and variation pieces it has inspired. Due to its multiple variations juxtaposing extremely different styles, Hamelin's Variations on a Theme of Paganini presents the listener with a musical puzzle that is designed to invoke surprise. The juxtapositions of extremely different styles in these variations create disjointed variations with polystylism. The polystylism in this work diversifies his variations, while unifying these seemingly unbalanced movements through broad musical references. As such, both performers and …
Date:
December 2019
Creator:
Kim, Warren
System:
The UNT Digital Library
María Teresa Prieto's "Seis Melodías": An Analysis of Its Historical Background and Text-Music Relationship
Spanish composer María Teresa Prieto (1895-1982) belongs to a group of Spanish exiles who left their country for Mexico as a result of the Spanish Civil War. She arrived in Mexico in 1936 and developed her compositional career in there. Her first composition after her arrival in the new country was the song cycle Seis Melodías, a work that includes six songs with poetry by Ricardo de Alcázar, Juan Ramón Jiménez, Federico García Lorca, and María Teresa Prieto herself. This document analyzes each one of the songs, both musically and poetically, as well as the relationship between music and text. Seis Melodías' structural organization as a cycle is very particular, since Prieto organized the cycle in pairs—namely I and II, III and IV, and V and VI—each group with strong poetic and thematic unity. The songs belonging to this cycle, present the duality of being independent and dependent at the same time, given that each song stands by itself, but together they create a meta-narrative that progresses from hope to desolation, not as a political statement, but as a homage to, as well as a lament, for the Spanish land and freedom. The cyclical nature of this work is accomplished …
Date:
December 2019
Creator:
Monsalve Mejía, Juana
System:
The UNT Digital Library
A Performance and Security Analysis of Elliptic Curve Cryptography Based Real-Time Media Encryption
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This dissertation emphasizes the security aspects of real-time media. The problems of existing real-time media protections are identified in this research, and viable solutions are proposed. First, the security of real-time media depends on the Secure Real-time Transport Protocol (SRTP) mechanism. We identified drawbacks of the existing SRTP Systems, which use symmetric key encryption schemes, which can be exploited by attackers. Elliptic Curve Cryptography (ECC), an asymmetric key cryptography scheme, is proposed to resolve these problems. Second, the ECC encryption scheme is based on elliptic curves. This dissertation explores the weaknesses of a widely used elliptic curve in terms of security and describes a more secure elliptic curve suitable for real-time media protection. Eighteen elliptic curves had been tested in a real-time video transmission system, and fifteen elliptic curves had been tested in a real-time audio transmission system. Based on the performance, X9.62 standard 256-bit prime curve, NIST-recommended 256-bit prime curves, and Brainpool 256-bit prime curves were found to be suitable for real-time audio encryption. Again, X9.62 standard 256-bit prime and 272-bit binary curves, and NIST-recommended 256-bit prime curves were found to be suitable for real-time video encryption.The weaknesses of NIST-recommended elliptic curves are discussed and a more secure new …
Date:
December 2019
Creator:
Sen, Nilanjan
System:
The UNT Digital Library
Manipulation of Light-Matter Interactions in Molybdenum Disulfide (MoS2) Monolayer through Dressed Phonons (DP) and Plasmons
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Use of this item is restricted to the UNT Community
The performance of electrical and optical devices based on two-dimensional semiconductors (2D) such as molybdenum disulfide is critically influenced due to very poor light absorption in the atomically thin layers. In this study, the phonon mediated optical absorption and emission properties in single atomic layers of MoS2 have been investigated. The electronic transitions in MoS2 due to near-field optical interaction and the influence of interface phonons due to the dielectric substrate GaN on the relaxation of optically generated carriers will be described. The near-field interaction can be induced in the presence of metal plasmons deposited on the surface of MoS2 monolayers. A hybrid metal-semiconductor system was realized by the deposition of silver (Ag) NPs on MoS2 layer and the localized plasmon modes were selectively chosen to interact with quasiparticles such as excitons and phonons. These quasiparticles are confined within the single atomic layer of MoS2 and are stable at room temperatures due to high binding energy. The lattice vibrational modes in MoS2 can be optically excited with the pulses from a femtosecond laser. These phonon modes can be optically dressed due to near-field interaction in the hybrid Ag-MoS2 system under an optical excitation resonant to localized plasmon modes. The coherent …
Date:
December 2019
Creator:
Poudel, Yuba R
System:
The UNT Digital Library
A Somatic Mindfulness Project Exploring the Effects of Meditation on Art Appreciation in the Gallery Setting
This dissertation describes the effects of a somatic mindfulness project on the way participants interact with and respond to works of art in a gallery setting. The study begins with a critique of Descartes' philosophy, Cartesianism, which emphasizes the role of the mind over that of the body and senses and argues that this thought continues to affect education even today. By contrast, phenomenology and mindfulness practices attempt to overcome Descartes' legacy by focusing on the importance of the body in lived experience. In particular, this study uses a phenomenological framework to conduct mindfulness on the relationship between the body and the perception of art. To do so, I utilized several phenomenological techniques for gathering data, including observations, video, and interviews, and I also created a unique method to analyze the data using a phenomenological verbal (written) description and visual (through photographic paintings) description. These techniques worked together to express the moment of reversibility between the meditative body and the artworks in the gallery setting. In sum, the findings of this study show that meditation changes the perceptual experience for different people in different ways. Another finding is that different forms of meditation may work better for some people than …
Date:
December 2019
Creator:
Bassi, Merfat Mohammed
System:
The UNT Digital Library
The Influence of Emergency Department Wait Times on Inpatient Satisfaction
Patient satisfaction dimensions have a wide ranging and significant impact on organizational performance in the healthcare industry. In addition, the Centers for Medicare and Medicaid Services Hospital Value Based Purchasing (HVBP) Program links patient satisfaction to Medicare reimbursement, putting millions of dollars at risk for health systems. A gap in the literature exists in the exploration of how a patient's experience in the emergency department affects their satisfaction with inpatient services. In a multiple regression analysis, the relationship between HVBP Patient Experience of Care and hospital level factors including emergency department wait times are explored. Results indicate a statistically significant relationship between hospital level factors and standardized measure of patient satisfaction with a moderate adjusted effect size (p= <.0001, R2 adjusted= 0.184). Emergency department wait times post physician admit orders were most salient in predicting patient satisfaction scores (rs2= 0.434, β= -0.334, p= <.001). Recommendations to improve emergency department wait times include focusing on key decision points and implementation of electronic systems to support the movement of admitted patients out of the emergency department as quickly as possible.
Date:
December 2019
Creator:
Wood, John, III
System:
The UNT Digital Library
The Teaching of 21st Century Skills through Project-Based Learning and Professional Development for Career and Technical Education
The purpose of this non-experimental, quantitative study is to investigate the relationship between the use of project-based learning (PBL) by secondary business teachers and time spent in professional development of secondary business teachers for the teaching of 21st century skills. The four identified 21st century skills that will be researched include: (1) critical thinking, (2) collaboration, (3) communication, (4) creativity and innovation. A sample of 316 secondary business teachers were surveyed about their classroom practice and reflection of teaching 21st century skills. This study used a modified version of the 21st Century Teaching and Learning Survey. Survey results were analyzed for relationships using correlational and regression analysis. Business teachers reported a statistically strong relationship between the use of PBL and the teaching of 21st century skills. A statistically significant relationship between time spent in professional development and the teaching of 21st century skills was not found. Regression results indicated that the use of PBL had an impact on the teaching of 21st century skills. This research guides teachers, school administrators, and CTE directors at the state and district level towards the creation of professional development and implementation strategies when applying PBL methods in career and technical education settings.
Date:
December 2019
Creator:
Petrunin, Kristin Firmery
System:
The UNT Digital Library
An Exploration of Professional Training and Professional Practice: Title IX Administrators and Meaning Making
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Use of this item is restricted to the UNT Community
Federal law requires institutions to designate campus-based administrators to oversee Title IX processes and investigations, but little is known about how these have been professionally prepared for their roles. The purpose of this study was to understand the professional preparation, educational experiences, and professional training of Title IX administrators and to understand their independence in decision-making in those roles. This study utilized qualitative content analysis and a social constructionist approach to analyze data generated from interviews and document analysis. Sixteen current and former Title IX administrators (investigators, deputy coordinators, coordinators) provided their perspectives on their professional training and development. Using frameworks of work/professional socialization and professions theory, findings illustrated complex systems for knowledge acquisition, professional preparation, and professional socialization based on factors including resources, institutional context, and role prioritization. Participants' formal education, formative experiences, position-specific training, and professional organizations training all served as preparation for their roles. Discussion focused on implications for graduate programs, training and trainers, institutions and supervisors, the field of higher education, and current Title IX practitioners regarding professional preparation for these roles.
Date:
December 2019
Creator:
Razo, Demesia
System:
The UNT Digital Library
PAOFLOW-Aided Computational Materials Design
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Use of this item is restricted to the UNT Community
Functional materials are essential to human welfare and to provide foundations for emerging industries. As an alternative route to experimental materials discovery, computational materials designs are playing an increasingly significant role in the whole discovery process. In this work, we use an in-house developed python utility: PAOFLOW, which generates finite basis Hamiltonians from the projection of first principles plane-wave pseudopotential wavefunctions on pseudo atomic orbitals(PAO) for post-process calculation on various properties such as the band structures, density of states, complex dielectric constants, diffusive and anomalous spin and charge transport coefficients. In particular, we calculated the dielectric function of Sr-, Pb-, and Bi-substituted BaSnO3 over wide concentration ranges. Together with some high-throughput experimental study, our result indicates the importance of considering the mixed-valence nature and clustering effects upon substitution of BaSnO3 with Pb and Bi. We also studied two prototype ferroelectric rashba semiconductors, GeTe and SnTe, and found the spin Hall conductivity(SHC) can be large either in ferroelectric or paraelectric structure phase. Upon doping, the polar displacements in GeTe can be sustained up to a critical hole concentration while the tiny distortions in SnTe vanish at a minimal level of doping. Moreover, we investigated the sensitivity of two dimensional group-IV monochalcogenides …
Date:
December 2019
Creator:
Wang, Haihang
System:
The UNT Digital Library
Participatory Management and Absenteeism and Turnover of Nursing Assistants in Nursing Homes
Nursing assistants (NAs) provide the majority of daily care to older adults in nursing homes (NHs); NAs working in NHs are the focus of this study. This study examined the influence of participatory management (the independent variable), and mediating variables, burnout – measured as emotional exhaustion, task performance, and affective organizational commitment, on NA withdrawal behaviors (the dependent variables absenteeism and turnover). Most of the data come from a 113-item self-administered questionnaire designed to measure NAs' perceptions of their job and work environment. Turnover data were collected from the NA's NH, on average about 16 months later. The two dependent variables were examined in separate analyses with the samples consisting of 246 participants for the absenteeism analysis and 244 for the turnover analysis. Data were analyzed using SPSS 25 and PROCESS 3.3, an SPSS macro add-in. Both ordinary least squares and logistic binary regression were used to examine the associations between variables. The results indicated that participatory management had statistically significant indirect effects on both outcomes. There were two significant mediation results for absenteeism: 1) participatory management increased NA task performance, which, in turn, decreased absenteeism and, 2) participatory management also decreased NA burnout, which, in turn, increased their performance …
Date:
December 2019
Creator:
Hughes, Susan D.
System:
The UNT Digital Library
State Capacity, Security Forces and Terrorist Group Termination
This dissertation examines how different forms of state capacity affect the decision of terror groups to end their campaign. Building a theoretical framework about the relationship between state capacity and terrorist group termination, I address the following research questions: How do terror groups respond to the changes in non-repressive forms of state's capacity, such as bureaucratic capacity, extractive capacity, and how do those responses of terror groups affect the chance of their demise? How do the changes in non-repressive forms of state capacity affect the likelihood of termination of particular types of terror groups, specifically ethnic terror groups? And finally, how do security forces representing repressive capacity of states affect the probability of a terrorist group end? I argue that as the state fighting the terror group increases its capacity, that will generate an incentive for the terror group to respond to increasing state capacity to secure its survival and maintain its existence. As the terror group produces responses to increasing state capacity in terms of rebuilding its capacity to operate and keeping its popular support base intact, it will be less likely to end its terror campaign. This argument is particularly relevant for terror groups operating on behalf of …
Date:
December 2019
Creator:
Kirisci, Mustafa
System:
The UNT Digital Library
The Keyboard Toccatas of Michelangelo Rossi (ca. 1602-1656): Performance Perspectives for Organists
This dissertation provides comprehensive performance perspectives for the interpretation of the published keyboard toccatas by Michelangelo Rossi (ca.1602-1656) in his collection, Toccate e Correnti d'Intavolatura d'Organo e Cimbalo (c. 1634). This document consults the following sources on keyboard practice in the early-Baroque period: Girolamo Diruta's Il Transilvano Dialogo Sopra Il Vero Modo Di Sonar Organi, & Istromenti da penna (1593); Adriano Banchieri's Conclusioni nel Suono dell'Organo (1609); Costanzo Antegnati's L'Arte Organica (1608); and the prefaces to Girolamo Frescobaldi's publications Toccate e Partite d'Intavolature di Cembalo, Libro Primo (first version 1615; second version 1615, 1616, 1628; and third version 1637), and Fiori Musicali (1635). These sources provide information on most aspects of keyboard—and specifically organ—playing in the decades leading up to, and at the time of, the initial publication of Rossi's toccatas: including the toccata as genre, Italian organs from the late-Renaissance/early-Baroque, registration, tempo, pedaling, fingering, articulation, and ornamentation. In addition to the performance perspectives, this dissertation also provides a new modern edition of the ten toccatas by Michelangelo Rossi. This edition is based on the 1657 Bologna facsimile. The goal of this edition is two-fold. First to present an accurate text of the facsimile and second to adjust certain beam-groupings, …
Date:
December 2019
Creator:
Van Rooyen, Hentus
System:
The UNT Digital Library
Creative Networks: Toward Mapping Creativity in a Design Classroom
This study developed new mapping techniques and methodologies for understanding creativity in terms of connectivity and interaction between human and non-human actors in a design classroom. The researcher applied qualitative methods of data collection combining both observation of classroom activities and focus group interviews in order to map a creativity network. The findings indicate that creativity is a complex weather-like system (or what I call "creative climate") composed of many sub-networks and diffused networks. Four interactions emerged from the study: (a) the creative climate is composed of the circulation of bodies and objects forming networks and sub-networks, (b) centers and corners/edges are a measure of connectivity and interaction in classroom space design, (c) roundness is a measure of classroom style and the space of connectivity usage, and (d) plugs-in creativity is a measure of technology consolidation. This study attempted to fill the gap in the literature on creativity and classroom design by explaining the role of non-human actors in shaping the creative climate in the classroom, especially the role of the classroom space itself as an actor. The implication of this study in art education opens a new opportunity for research in designing innovative classrooms. Also, it will allow future …
Date:
December 2019
Creator:
Harkan, Lama Abdulrahman
System:
The UNT Digital Library
Mothering while Brown: Latina Borderland Mothers' Experiences of Epistemic Injustice
Anti-immigrant rhetoric undermines Latinx parents' epistemic legitimacy as producers of valued parental knowledge, irrespective of immigrant status. Little is known about the epistemic harm to Latina mothers who must negotiate their maternal scripts against the backdrop of a parenting discourse steeped in deficit thinking. This study used testimonio to explore the experiences of Latina mothers of young children living in the borderlands of South Texas via a Chicana/Latina feminist epistemological framework that conceptualizes the self as multiplicitous and responsive to the straddling of multiple cultures, nationalities, races, languages, and physical borders. The research questions guiding the study included: (1) How do Latina borderland mothers experience epistemic harm in the context of mothering knowledge? and (2) What strategies do borderland mothers employ to nurture strength and counter epistemic harm? Two theoretical constructs emerged from data analyses. First, the borderland was a site of recurring credibility battles as well as a site of "in-the-flesh" encounters that deepened human connection. Supporting themes included "Brown-on-Brown conflict vs. like-me counters" and "situating injustice vs. denying injustice." The second theoretical construct asserted that borderland mothers' ways of knowing are polyvocal and reflect a Brown body ethic of care. Its two supporting themes included "co-family as sources …
Date:
December 2019
Creator:
Verdin, Azucena
System:
The UNT Digital Library
District Systematic Supports of an Instructional Coaching Program
The purpose of this qualitative study was to identify the systems, structures, and behaviors district leaders employ and enact to assist elementary school principals' relationship with their school instructional coach. Through the synthesis of current research, the conceptual framework was developed with a focus on district leadership behaviors and instructional coaching programs. The conceptual framework consisted of professional capital theory, instructional coaching model, and principal leadership skills. This study assessed the perceptions of six instructional coaches, six elementary principals, and three district leaders from Comet ISD regarding the specific behaviors district leaders use to support the relationship between the school principal and instructional coach. The three-part data collection process included document analysis, face-to-face interviews, and focus group interviews to support the triangulation of data. Through the a priori coding process, four themes emerged that identified key district structures and leadership behaviors needed to support the relationship between the school principal and instructional coach: program clarity, principal leadership skills, professional learning opportunities, and culture of continuous learning. This study revealed a specific need to understand program implementation, accountability, and evaluation of the effectiveness of the instructional coaching program in a fast-growth district.
Date:
December 2019
Creator:
Webb, Mary Katherine
System:
The UNT Digital Library
The Missing Piece of the Puzzle: A Study of How First-Generation Latino Male College Students Acquire Cultural Capital
This study aimed to take asset-based approach and identify Latino male students who were persisting in college, and to identify what strategies made them successful. This qualitative study consulted Tinto's revised student departure model, Bourdieu's theory of cultural capital, as well as Yosso's theory of community cultural wealth. A phenomenological design was utilized to identify the shared experience of first-generation Latino male college students who had persisted in college and maintained a 3.0 grade point average. Findings revealed that Latino students entered college with goals to provide better opportunities for the next generation. They encountered unfamiliarity, culture shock, and marginalization, all obstacles centered not on academic preparedness, but on unfamiliarity with the environment. They used their linguistic, navigational, and aspirational capital to navigate their two worlds. Their cultural upbringing stressed a strong commitment to family and community, i.e. familismo. They found community among in-group peers and college staff. This support network provided what Laura Rendon refers to as validating experiences. Once familismo was obtained they gained a sense of belonging and grew their cultural capital to become familiar with the college going culture. The learned the rules of the game which enabled students to focus on their goal of earning …
Date:
December 2019
Creator:
Portillo, Pedro Atilano-Molina
System:
The UNT Digital Library
An Analysis of Dave Holland's Free Improvisation in "Waterfall" and Its Pedagogical Applications for Bassists in Avant-Garde Performance
This research investigates a microcosm of the free jazz/free improvisation environment of the 1970s in "Waterfall," from the album Dave Holland/Sam Rivers Vol. 1. This recording features Dave Holland and Sam Rivers exhibiting highly developed improvisational language and effortless interaction. The purpose of this investigation is to create pedagogical material for bassists who are unfamiliar and/or uncomfortable with performing in an improvisational style that exists separately from the rigid, instrumental role hierarchy of common practice jazz. An analysis of musical elements including melody, rhythm, form, and energy through systems of musical contour, musical forces, and form analysis reveal constituent patterns that can be isolated. These patterns are codified and presented as pedagogical suggestions to assist in the practice of free improvisation.
Date:
December 2019
Creator:
Heffner, Steven (Bassist)
System:
The UNT Digital Library