UNT Theses and Dissertations - 4,300 Matching Results

Search Results

prev Results: 11 - 34 next

Characterization, Analysis, and Optimization of Rotary Displacer Stirling Engines

Description: This work focuses on an innovative Rotary Displacer SE (RDSE) configuration for Stirling engines (SEs). RDSE features rotary displacers instead of reciprocating displacers (found in conventional SE configurations), as well as combined compression and expansion spaces. Guided by the research question "can RDSE as a novel configuration achieve a higher efficiency compared to conventional SE configurations at comparable operating conditions?", the goal of this study is to characterize, analyze, an… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Bagheri, Amirhossein
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

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
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Williams, Christopher M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Conceptual Barriers to Decarbonization in US Energy Policy

Description: In order to meet emissions targets under the UN Paris Agreement, every nation must decarbonize its energy production. The US isn't reducing energy-related emissions fast enough to meet its targets for keeping overall warming under 2°C above pre-industrial levels. This constitutes a grave injustice to the most vulnerable populations of the world, who are suffering the ill effects of climate change already. The challenge of eliminating fossil fuels from the US energy system is not simply one of t… more
Date: December 2019
Creator: Rowland, Jennifer Joy
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Construction Management Methods and Techniques in Army Tactical Shelter

Description: This thesis presents a research effort aimed at developing using construction methods and techniques in army tactical shelter. The beginning step focuses on developing and identifying different activities and work breakdown structure applicable in shelter prototype. The next step focuses on identifying resource allocation. This include allocate resources based on the delivered project as per alternative one and for the second alternative as optimization, resource allocation modified and tried t… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Yeganehtalab, Babak
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
open access

Creating the Character of North Texas: Demographics and Geography, 1841-1861

Description: Several historians have identified North Texas as constituting a unique cultural region in antebellum Texas, due to the more limited cotton and slave economies and greater opposition to secession. Different settlement patterns have been put forward as an explanation for the distinct "character" of North Texas, with North Texas being portrayed as being settled largely by migrants from the Upper South while the rest of the state was primarily settled by Lower Southerners. The argument rests on th… more
Date: December 2019
Creator: Stites, Russell
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Creative Networks: Toward Mapping Creativity in a Design Classroom

Description: 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-net… more
Date: December 2019
Creator: Harkan, Lama Abdulrahman
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Deep Learning Approach for Sensing Cognitive Radio Channel Status

Description: 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 techno… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Gottapu, Srinivasa Kiran
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Depression, Religious Behaviors and Social Support as Predictors of Health-Related Quality of Life among HIV Positive Individuals

Description: The goal of the current study was to evaluate the ways in which religious behaviors and perceived social support are associated with the relationship between depressive symptoms and health-related quality of life for this group. We hypothesized (1) that religious behaviors moderate the relationship between depressive symptoms and health-related quality of life, (2) perceived social support mediates the relationship between depressive symptoms and health-related quality of life and (3) that reli… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Davis, Cameron W
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Design Method of Cold-Formed Steel Framed Shear Wall Sheathed by Structural Concrete Panel

Description: The objective of this research is developing a new method of design for cold-formed steel framed shear wall sheathed by ¾" thick USG structural panel concrete subfloor using a predictive analytical model and comparing the results obtained from the model with those achieved from real testing to verify the analytical model and predicted lateral load-carrying capacity resulted from that. Moreover, investigating the impact of various screw spacings on shear wall design parameter such as ultimate st… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Ashkanalam, Aida
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Determining the Diagnostic Accuracy of and Interpretation Guidelines for the Complex Trauma Inventory (CTI)

Description: The work group in charge of editing the trauma disorders in the upcoming edition of the International Classification of Diseases (ICD-11) made several changes to the trauma criteria. Specifically, they simplified the criteria for posttraumatic stress disorder (PTSD) and added a new trauma disorder called complex PTSD (CPTSD). To assess the new and newly defined trauma disorders, Litvin, Kaminski and Riggs developed a self-report trauma measure called the Complex Trauma Inventory (CTI). Although… more
Date: December 2019
Creator: Litvin, Justin M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Development of an Optical Carbon Dioxide Sensor and Modeling of Metal-Metal Interactions for Sensor Applications

Description: An investigation of luminescent sensing has been presented. Neutral Red, a common pH luminescent sensor, was shown to be an effective carbon dioxide sensor for the first time. Sensing experiments were performed both through fluorometric and fluorescent microscopy studies, giving rise to the possibility of carbon dioxide sensing for biological applications. Neutral Red was benchmarked against the well-established carbon dioxide sensor Pyranine (8-hydroxypyrene-1,3,6-trisulfonic acid trisodium sa… more
Date: December 2019
Creator: Ericson, Megan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

District Systematic Supports of an Instructional Coaching Program

Description: 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 le… more
Date: December 2019
Creator: Webb, Mary Katherine
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Effectiveness of Child Parent Relationship Therapy (CPRT) for Fathers

Description: High levels of quality father involvement in childhood are associated with children's socio-emotional, cognitive, and behavioral wellbeing. However, fathers can experience difficulty in building positive relationships with their kids due to work-life balance, lack of relational experience, and other life stressors. The purpose of this study was to assess the effectiveness of child-parent relationship therapy (CPRT) on fathers' parental empathy, parental stress, and child behavior problems. Thou… more
Date: December 2019
Creator: McClintock, Damian Gearld
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Effects of Customer's Evaluation about Instagram Attributes towards Purchase Intentions for Small Apparel Retailers: Application of Social Capital Theory

Description: Small apparel retailers face extreme competition with larger retailers. Large retailers have the upper hand in resources to stay updated with various trends, specifically social media. Social media has lowered the barriers to enter the retail industry. However, once these small retailers enter, half of them fail because they don't attract and retain customers. Small-medium enterprises (SMEs) greatly impact the economy, so it is important to study various facets of their business to increase per… more
Date: December 2019
Creator: McKneely, Brittany R
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
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

Ensemble Singing in the Bel Canto Salon Repertory: A Pedagogical Reconsideration

Description: Vocal duets have had a long history in the Western classical music tradition. Their use as a teaching resource can be traced back to the Renaissance, where duets were used for the development of singing, performance, and musicianship. In the late 19th and all of the 20th centuries, this pathway of vocal pedagogy has markedly declined. This study proposes a reintroduction of this methodology of teaching, asserting that it provides the collegiate vocal student with maximum opportunity for growth … more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 2019
Creator: Brown, Shaun (Shaun Joseph)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Evaluating the Effects of the D.A.N.C.E Training System on Staff and Child Responding

Description: The purpose of this study was to evaluate and systematically replicate the effectiveness of the DANCE training for a staff member to be an effective change agent for the children in her care, while maintaining the organization's and family's values. The study was conducted in an organization that values and focuses on building rapport, avoids the use of coercive procedures, and teaches children in a caring and meaningful way. A multiple baseline across indoor and outdoor settings was used to ev… more
Date: December 2019
Creator: Morales, Erendira
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Event Sequence Identification and Deep Learning Classification for Anomaly Detection and Predication on High-Performance Computing Systems

Description: High-performance computing (HPC) systems continue growing in both scale and complexity. These large-scale, heterogeneous systems generate tens of millions of log messages every day. Effective log analysis for understanding system behaviors and identifying system anomalies and failures is highly challenging. Existing log analysis approaches use line-by-line message processing. They are not effective for discovering subtle behavior patterns and their transitions, and thus may overlook some critic… more
Date: December 2019
Creator: Li, Zongze
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Examining the Impact of Community Policing on Public Attitudes toward Fear of Terrorism, Resilience, and Satisfaction with Police in the Face of New Terrorism

Description: 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 deal… more
Date: December 2019
Creator: Ayazma, Tayfun
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Examining the Psychological Resiliency of Latino Immigrants in Five Texas Cities: Policy, Economics, and Politics – The Case of the Latino Community

Description: 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 fiv… more
Date: December 2019
Creator: Icer, Mehmet Mustafa
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
Back to Top of Screen