UNT Theses and Dissertations - 4,294 Matching Results

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Towards a Unilateral Sensing System for Detecting Person-to-Person Contacts

Description: The contact patterns among individuals can significantly affect the progress of an infectious outbreak within a population. Gathering data about these interaction and mixing patterns is essential to assess computational modeling of infectious diseases. Various self-report approaches have been designed in different studies to collect data about contact rates and patterns. Recent advances in sensing technology provide researchers with a bilateral automated data collection devices to facilitate co… more
Date: December 2018
Creator: Amara, Pavan Kumar
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Horn Concerto in E-flat Major (C41) by Antonio Rosetti: A Critical Edition

Description: This project delivers to the scholar and performer a critical edition of a little-known horn concerto by Antonio Rosetti. Standing in contrast to performance or practical editions, critical editions demand that the editor exerts a non-trivial measure of authority over the state of the text. Performers often find this fact to be uncomfortable given the normal tendency to revere the perceived intent of the composers based upon the text that they set down. When engaging with sources, it is rarely … more
Date: December 2019
Creator: Stewart, Brandon (Brandon Gregory)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Exploring Caffeyl-Lignin Biosynthesis in Cleome hassleriana and Polymerization of Caffeyl Alcohol in Arabidopsis thaliana

Description: C-lignin (caffeyl-lignin) is a novel linear lignin polymer found in the seed coats of several non-crop plants, notably Vanilla planifolia (Vanilla), Jatropha Curcas (Jatropha), and Cleome hassleriana (Cleome). C-lignin has several advantages over normal G/S-lignin, found in the majority of lignocellulosic biomass, for valorization in the context of bioprocessing: less cross-linking to cell wall polysaccharides (less recalcitrant biomass), ordered linkages between monomers (homogeneous polymer),… more
Date: December 2019
Creator: Harkleroad, Aaron Djuanell
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Perceptions of Principals Learning to Lead Professional Learning Communities in a Fast-Growth District

Description: The role of the principal has become increasingly complex and challenging. Recent emphasis has been placed on the role of principals as leaders who can build a culture of learning in schools to close the student achievement gap. Outside factors such as fast-growth in Texas have caused schools to change and grow quickly, which increases the learning demands placed on principals as they seek to develop the knowledge and skills needed for effective leadership. Developing and sustaining a professio… more
Date: December 2019
Creator: Rapp, Kellie C
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Leadership Practices for Effective Equitable Learning Environments: A Case Study of Opportunity Gaps in a Rural District

Description: In rural, low socioeconomic public schools, the diversity of the student population challenges teachers beyond their means to meet the wide-ranging needs of students, and therefore creating opportunity gaps. The purpose of this study was to explore one district's leadership support of teachers to create an equitable learning environment for all students. The present study built on existing literature by discovering leadership practices and perceived necessary supports for closing achievement ga… more
Date: December 2019
Creator: Palazzetti, Lisa A
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Irrigation Methods and Their Effects on Irrigation Water Efficiency in High Tunnels

Description: Improving water efficiency is and will continue to be a top concern to meet the world food production demands for a growing population. By having a clear understanding of water efficiencies, communities will be able to address these concerns from an economic standpoint and use more productive methods to grow food and limit water consumption. This study examines the water efficiencies of three irrigation methods over a single growing season in southeastern Oklahoma. Two crops, tomatoes and cucum… more
Date: December 2019
Creator: Young, Lauren
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Child-Centered Canine-Assisted Therapy: An Investigative Look at Integrating Therapy Dogs into Child-Centered Play Therapy

Description: Play therapy and animal-assisted therapy are two specialized modalities within the field of counseling. Child-centered play therapy (CCPT) is a specific theoretical approach to play therapy that regards the therapeutic relationship as the primary healing factor. With much empirical support, CCPT is considered an effective mental health treatment option for working with children. Animal-assisted therapy in counseling (AAT-C) is acknowledged in the literature as a supplemental treatment modality … more
Date: December 2019
Creator: Talley, Lindsay P
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

High School Teachers and Support Staff's Attitudes toward Students with Disabilities in the Inclusive General Education Classroom

Description: Research has shown teachers' attitudes toward students with disabilities directly affect the students' performance in the general education classroom; however, more research is needed to determine what variables influence high school teacher and support staff attitudes. The purpose of this study was to determine the attitudes of high school general education teachers, special education teachers, and support staff toward students with disabilities in the general education classroom. The study ex… more
Date: December 2019
Creator: Yoakum, Carrie Mae
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Investigations of the Fresnel Lens Based Solar Concentrator System through a Unique Statistical-Algorithmic Approach

Description: This work investigates the Fresnel-lens-based solar concentrator-receiver system in a multi-perspective manner to design, test and fabricate this concentrator with high-efficiency photon and heat outputs and a minimized effect of chromatic aberrations. First, a MATLAB®-incorporated algorithm optimizes both the flat-spot and the curved lens designs via a statistical ray-tracing methodology of the incident light, considering all of its incidence parameters. The target is to maximize the solar ray… more
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Date: December 2019
Creator: Qandil, Hassan Darwish Hassan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

"Running from My Youth": Essays

Description: Running From My Youth: Essays is a collection of nonfiction essays that explore important moments and experiences from the narrator's youth, and how he has addressed and remembered them in the years since. Some of the essays explore the narrator's time as a distance-runner, while others explore the awkwardness and discomfort onset by religion and nudity.
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Date: December 2019
Creator: Jernigan, Hunter Jason Alexander
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

As the Need Presents Itself: Social Identity Theory and Signaling in Online Crowdfunding Campaigns

Description: As social interactions increasingly become exclusively online, there is a need for research on the role of identity and social identity in online platforms. Drawing on Symbolic Interactionist approaches to identity, namely Social Identity Theory and Identity Theory, as well as Signaling Theory, this study argues that actors will selectively use religious language to signal their credentials to an audience for the purpose of garnering prosocial behavior in the form of donations to their fundrais… more
Date: December 2019
Creator: Hamilton, Scott J
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Computational Development of Trimetallic Cyclotrimers for Gas-Filtration Applications through Non-Covalent Interactions

Description: Photophysical properties of an array of various polyaromatic hydrocarbons were benchmarked with B3LYP, M06 and B97D methods coupled with Pople and CEP-31G(d) basis sets. Results from the benchmark show the importance of diffuse basis sets when modeling the electronic properties of highly conjugated systems and provide qualitative reliable accuracy with certain levels of theory. B97D and M06 are applied to modeling pyrene adducts governed by non-covalent interactions in both gaseous and condense… more
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Date: December 2019
Creator: Williams, Christopher M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Fatigue and Inhibitory Control: A Test of Key Implications of an Emerging Analysis of Behavioral Restraint Intensity

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 clip protocol and a procedure for inducing low- and high levels of fatigue. Analyses indicated that key cardiovascular (CV) resp… more
Date: December 2019
Creator: Mlynski, Christopher
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Solo Piano Collections "Reaching Out" and "Travels Through Sound" by Emma Lou Diemer: Pedagogical Guidelines for Contemporary Techniques for Intermediate-Level Students

Description: Emma Lou Diemer (b. 1927) is a leading American composer, pianist, and educator. Although she composed many outstanding advanced-level piano works, she also believes that composing for other levels is a good discipline for composers. Her two collections Reaching Out and Travels Through Sound contain various contemporary techniques that are highly approachable for intermediate-level students. The purpose of this study is to provide a pedagogical guide to contemporary elements present in these co… more
Date: December 2019
Creator: Yum, Ji-Eun
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Performance Guide to David Kechley's "In the Dragon's Garden" with an Investigation of the Saxophone-Guitar Duo Genre

Description: American composer David Kechley was profoundly impacted by a 1990 trip to the Ryoan-ji Temple in Kyoto, Japan. The composer describes the finely raked, small white stones in the midst of fifteen large rocks in the Japanese Zen garden as "planned randomness." Kechley's inaugural composition for saxophone-guitar duo, In the Dragon's Garden, reflects his experience at the Ryoan-ji Temple. The use of minimalistic compositional techniques without literal repetition in the work represents a departure… more
Date: December 2019
Creator: Pierce, Justin
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Impact of Market State on Momentum Portfolio Risk and Performance: A Risk-Based Explanation

Description: The momentum puzzle, i.e., stocks that have performed better in the past tend to perform better in the future, has been a constant challenge to classic finance theory. Prior research has failed to provide valid risk-based explanations because winner portfolios do not exhibit higher risk characteristics. Without a convincing risk explanation, the persistence of momentum profit is a violation of the efficient market hypothesis. Today, the momentum puzzle remains one of the very few major anomalie… more
Date: December 2019
Creator: Ren, He
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Learning Management System Facilitated Blended Learning in Secondary Schools

Description: The relatively new utilization of learning management system (LMS) facilitated blended learning in secondary public schools has grown in popularity, but there is a void in research at this level. Teachers learned how to use the LMS features and honed their blended learning design skills through their own experiences, and in observation of their students' experiences. In this study, the knowledge teachers built and the decisions they made while designing blended learning were explored. In thi… more
Date: December 2019
Creator: Clewell, Kelly Sue
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Highly Motivated, High-Achieving, Economically Disadvantaged Middle School Students: A Self-Determination Theory Perspective

Description: To conduct this qualitative dissertation study, a phenomenological approach was utilized. The purpose of the study was to examine the perspectives of highly motivated, economically disadvantaged, middle school students to discover the factors that they identified as integral to their overall development and their intrinsic motivation, over time, to learn. A key component of this study was to give voice to the students who participated in this study and utilize their perspectives as a primary da… more
Date: December 2019
Creator: Minyard, Michael
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Twenty-First Century Local Food Farmers in North Texas: An Evaluation of Farming Methods, Best Practices, and Common Struggles

Description: Research with local farmers and local food consumers in the North Texas area which captures a contemporary understanding of the challenges and successes present in North Texas local farm-and-food networks. Through ethnographic research methods, including participant-observation and semi-structured interviews, the network of producers and consumers around several farmers' markets were evaluated to understand where the strengths of local food lie, and where networks need development to promote a … more
Date: December 2019
Creator: McFarland, Kelly
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Effects of D.A.N.C.E. Training on Staff Teaching Interactions, Child Goal Responding, and Staff-Child Harmonious Engagement in an Autism Intervention Organization

Description: This study was conducted at a nonprofit organization whose mission is to provide responsive, caring, and effective services to children with autism. The purpose of this study was to analyze the effects of D.A.N.C.E. training on teaching interactions, harmonious engagement, instructional engagement, and progress on child goals for two early and intensive behavioral intervention (EIBI) staff and the children in their care. A multiple baseline design was employed to evaluate the effectiveness of t… more
Date: December 2019
Creator: Tavera, Marlene Lucy
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

William Gillock's Contributions to Piano Pedagogy: A Comparison of Three Works of Gillock with Selected Stylistic Models from the Baroque, Classical, and Romantic Repertoire

Description: William Gillock, a 20th-century American composer and pedagogue, composed numerous works in the styles of different periods for early intermediate-level piano students. The purpose of this dissertation is to introduce Gillock's pieces to teachers of early intermediate students and illustrate how they can be used as a bridge to the study of similar music from Baroque, Classical, and Romantic periods. Gillock's Little Suite in Baroque Style is compared with Handel's Suite in E Major, HWV 430; his… more
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Date: December 2019
Creator: Zhan, Le
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Empirical Investigation into the Value of Credit Lines

Description: Access to adequate liquidity to finance future investments is an essential element of financial management. The two main questions that this dissertation attempts to answer are (i) what is the net valuation effect of LoC? and (ii) if LoC create value, what are the sources of this value? To answer these questions, I constructed a sample of 85,232 firm-years spanning from 1993 to 2016, with credit line data obtained from Capital IQ and Bloomberg. I investigated the valuation effects of LoC with a… more
Date: December 2019
Creator: Al-Ghamdi, Saleh A.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

When Does Race Matter in Music Education?: An Exploration of Race, Racial Hegemony, and Predominantly Latinx Secondary Music Programs through the Theory of Racial Formation

Description: Latinx students are underrepresented among high school music students in the United States, nationally. However, localized demographics in some parts of the country reveal secondary music programs that are comprised nearly entirely of Latinx students. Still, the experiences of such a large and racially marginalized population as Latinx students remain under-researched in the field of music education. To explore how Latinx racial identity may inform the experiences of Latinx music students and t… more
Date: December 2019
Creator: Escalante, Samuel
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Content Analysis of Sustainable Information and Communication Technology Use in K-12 Education

Description: The purpose of this study is to provide a content analysis of specific studies that involve sustainable information and communication technology (ICT) use in K-12 education in the U.S. The results from the content analysis were used to identify factors that may contribute to the sustainable implementation of technologies in K-12 instruction. Factors from specific studies from 2000 to 2018 that have implemented ICT in instruction for three years or more were analyzed. The findings from the analy… more
Date: December 2019
Creator: Martinez, Bonnie M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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