UNT Theses and Dissertations - 464 Matching Results

Search Results

Results: 1 - 24 next
open access

Accelerated Corrosion Test with Operation Simulation of All-Aluminum Microchannel Heat Exchangers

Description: The HVAC&R industry is looking to transition from copper-aluminum heat exchangers to all-aluminum microchannel technology. The want for the transition stemmed from seeing the performance improvement of all-aluminum microchannel radiators in the automotive industry. Applications differ between the two industries; therefore, applying this technology for HVAC&R use must be validated. Research towards operating modes of an all-aluminum heat exchanger in a defined corrosive environment will provide … more
Date: May 2016
Creator: Vaughan, Haydn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Accelerated Degree Program Faculty: Motivation to Teach

Description: Adult educators are a growing part of American higher education. Because of their increasing prominence in adult education, it is essential to understand what roles these educators play and what motivates them to remain in the profession despite poor work prospects and conditions. Research to date, however, focuses primarily on the adult learner and not the adult educator. The purpose of this qualitative, multiple-case study was to explore the role and motivation for teaching of adult educato… more
Date: May 2016
Creator: Grishkevich, Hanna H.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Addressing Social Elements of Wildfire: Risk, Response, and Recovery in Highland Village, TX

Description: Representatives of the City of Highland Village expressed concern over the risk of wildfires for their community. Anthropology provides many tools for and examples of disaster assessment of preparedness, response, recovery, and mitigation. These tools combined with Geographic Information Systems (GIS) can provide a holistic, cultural ecological look at how such a disaster may take place in the city. The project's methods included a detailed survey of preparedness steps which was analyzed usin… more
Date: May 2016
Creator: MacKinnon, Jessica
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Adhesion and Surface Energy Profiles of Large-area Atomic Layers of Two-dimensional MoS2 on Rigid Substrates by Facile Methods

Description: Two-dimensional (2D) transition metal dichalcogenides (TMDs) show great potential for the future electronics, optoelectronics and energy applications. But, the studies unveiling their interactions with the host substrates are sparse and limits their practical use for real device applications. We report the facile nano-scratch method to determine the adhesion energy of the wafer scale MoS2 atomic layers attached to the SiO2/Si and sapphire substrates. The practical adhesion energy of monolayer M… more
Date: May 2016
Creator: Wu, Min
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Adoption, Management, and Performance of Local Government Investment Pools: A Comparative Analysis of State Practices

Description: This dissertation examines the factors influencing a state’s decision to adopt a local government investment pool (LGIP), the institutional arrangements used in managing them, and the effect of the institutional types on LGIP performance. The dissertation extends the policy adoption theory with insights from investment theory to demonstrate that management credibility influences the likelihood of a state’s LGIP adoption. The study finds that the quality of financial management, the quality of p… more
Date: May 2016
Creator: Nukpezah, Julius Atsu
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

AirSniffer: A Smartphone-Based Sensor Module for Personal Micro-Climate Monitoring

Description: Environmental factors can have a significant impact on an individual's health and well-being, and a primary characteristic of environments is air quality. Air sensing equipment is available to the public, but it is often expensive,stationary, or unusable for persons without technical expertise. The goal of this project is to develop an inexpensive and portable sensor module for public use. The system is capable of measuring temperature in Celsius and Fahrenheit, heat index, relative humidity, a… more
Date: May 2016
Creator: Smith, Jeffrey Paul
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Analysis and Optimization of Graphene FET based Nanoelectronic Integrated Circuits

Description: Like cell to the human body, transistors are the basic building blocks of any electronics circuits. Silicon has been the industries obvious choice for making transistors. Transistors with large size occupy large chip area, consume lots of power and the number of functionalities will be limited due to area constraints. Thus to make the devices smaller, smarter and faster, the transistors are aggressively scaled down in each generation. Moore's law states that the transistors count in any electro… more
Date: May 2016
Creator: Joshi, Shital
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Analysis of Educational Technology Publications: Who, What and Where in the Last 20 Years

Description: This exploratory and descriptive study examines research articles published in ten of the top journals in the broad area of educational technology during the last 20 years: 1) Educational Technology Research and Development (ETR&D); 2) Instructional Science; 3) Journal of the Learning Sciences; 4) TechTrends; 5) Educational Technology: The Magazine for Managers of Change in Education; 6) Journal of Educational Technology & Society; 7) Computers and Education; 8) British Journal of Educational T… more
Date: May 2016
Creator: Natividad Beltrán del Río, Gloria Ofelia
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Analysis of Factors for Successful State-Level Support of Low-Performing Schools

Description: This study provides a qualitative look at Texas' Professional Service Providers' (PSPs) strategies for supporting low-performing schools. Four PSPs were selected for participation based on the number of schools they helped exit the Texas Title I School Improvement Program from 2007-2012. Data collected and analyzed included provider and principal interviews, providers' progress reports documenting services, and principals' evaluations of provider services. Results indicated key support strategi… more
Date: May 2016
Creator: Ewing, Angela R.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Analysis of the Leadership Development Competency Frameworks of Nontraditional Principal Preparation Programs

Description: This study explored the competency frameworks of nontraditional principal preparation programs to determine how they aligned to research-based best practices for school leaders. The research questions that guided this work were: To what degree are the McREL 21 Leadership Responsibilities addressed in the competency frameworks of nontraditional principal preparation programs? How do the leaders of the nontraditional principal preparation programs view the degree to which their competencies in… more
Date: May 2016
Creator: Horton, Tonya
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Analytical Study of Paradox and Structural Dualism in the Music of Ludwig van Beethoven

Description: Beethoven's rich compositional language evokes unique problems that have fueled scholarly dialogue for many years. My analyses focus on two types of paradoxes as central compositional problems in some of Beethoven's symphonic pieces and piano sonatas. My readings of Beethoven's Piano Sonata No. 27 (Op. 90), Symphony No. 4 (Op. 60), and Symphony No. 8 (Op. 93) explore the nature and significance of paradoxical unresolved six-four chords and their impact on tonal structure. I consider formal-tona… more
Date: May 2016
Creator: Graf, Benjamin
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Art of Borrowing: Quotations and Allusions in Western Music

Description: Music travels across the past in the form of composers borrowing from each other. Such musical borrowings and quotations involve not only the use of melodic materials but also musical structures, texts, symbolism and other types of inspiration. The pre-existing musical idea being used is linked to a specific memory of a particular composer and time. The artistic allusions of composers connect the present and the past. Music also travels across the present and into the future. The outcome of con… more
Date: May 2016
Creator: Lee, Myung-Ji
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Background, Compositional Style, and Performance Considerations in the Clarinet Works of David Baker: Clarinet Sonata and Heritage: A Tribute to Great Clarinetists

Description: David Baker (b. 1931) is an educator, composer, and jazz legend. He has composed at least fifteen works that include the clarinet. Baker’s Clarinet Sonata (1989) has become a standard of clarinet repertoire and a popular recital inclusion. His chamber work Heritage: A Tribute to Great Clarinetists (1996) interweaves solo transcriptions of five jazz clarinetists. The compositional style of Baker’s clarinet works frequently links jazz and classical idioms. The two works discussed in this document… more
Date: May 2016
Creator: Lin, Sheng-Hsin
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Behaviorally Planned Community of Practice: A Description and Evaluation of One Area of Staff Development

Description: Staff training packages combining instructions, modeling, practice, and feedback have been shown to be effective in demonstrating skills to work in early intensive behavioral intervention, but maintenance and generalization of the skills trained are often not addressed. Establishing a community of practice, in which staff members continue to learn and develop new skill sets from one another through shared experiences and information, may lead to the endurance and maintenance of desired staff be… more
Date: May 2016
Creator: Ferguson, Julia L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Biodiversity and Genetic Structure of Benthic Macroinvertebrates Along an Altitudinal Gradient: A Comparison of the Windhond and Róbalo River Communities on Navarino Island, Chile

Description: Altitudinal gradients in Sub-Antarctic freshwater systems present unique opportunities to study the effect of distinct environmental gradients on benthic macroinvertebrate community composition and dispersal. This study investigates patterns in biodiversity, dispersal and population genetic structure of benthic macroinvertebrate fauna across an altitudinal gradient between two watersheds on Navarino Island in southern Chile. Patterns in diversity, density, evenness and functional feeding grou… more
Date: May 2016
Creator: Pulliam, Lauren
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Bioinspired & biocompatible coatings of poly(butylene adipate-co-terephthalate) and layer double hydroxide composites for corrosion resistance

Description: Hierarchical arrangement of biological composites such as nacre and bone containing high filler (ceramic) content results in high strength and toughness of the natural material. In this study we mimic the design of layered bone microstructure and fabricate an optimal multifunctional bio-nanocomposite having strength, toughness and corrosion resistance. Poly (butylene adipate-co-terephthalate) (PBAT), a biodegradable polymer was used as a substrate material with the reinforcement of LDH (Layered… more
Date: May 2016
Creator: Rizvi, Hussain R.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Biomass-Derived Activated Carbon Through Self-Activation Process

Description: Self-activation is a process that takes advantage of the gases emitted from the pyrolysis process of biomass to activate the converted carbon. The pyrolytic gases from the biomass contain CO2 and H2O, which can be used as activating agents. As two common methods, both of physical activation using CO2 and chemical activation using ZnCl2 introduce additional gas (CO2) or chemical (ZnCl2), in which the CO2 emission from the activation process or the zinc compound removal by acid from the follow-up… more
Date: May 2016
Creator: Xia, Changlei
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Caffeine’s Effects on Pausing During Alternating Work Requirements

Description: There is a significant body of literature stating that caffeine is the most widely consumed drug in the world, yet its effects on operant behavior are little understood. Some of the current research on caffeine suggests that it may play a role in altering motivational states related to transitions between previous and upcoming work requirements. The purpose of the current study was to examine the effects of caffeine on postreinforcement pausing during transitions between small and large fixed r… more
Date: May 2016
Creator: Libman, Benjamin M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Causes of the Jewish Diaspora Revolt in Alexandria: Regional Uprisings from the Margins of Greco-Roman Society, 115-117 CE

Description: This thesis examines the progression from relatively peaceful relations between Alexandrians and Jews under the Ptolemies to the Diaspora Revolt under the Romans. A close analysis of the literature evidences that the transition from Ptolemaic to Roman Alexandria had critical effects on Jewish status in the Diaspora. One of the most far reaching consequences of the shift from the Ptolemies to Romans was forcing the Alexandrians to participate in the struggle for imperial patronage. Alexandrian i… more
Date: May 2016
Creator: Vargas, Miguel M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Characterization of Post-Plasma Etch Residues and Plasma Induced Damage Evaluation on Patterned Porous Low-K Dielectrics Using MIR-IR Spectroscopy

Description: As the miniaturization of functional devices in integrated circuit (IC) continues to scale down to sub-nanometer size, the process complexity increases and makes materials characterization difficult. One of our research effort demonstrates the development and application of novel Multiple Internal Reflection Infrared Spectroscopy (MIR-IR) as a sensitive (sub-5 nm) metrology tool to provide precise chemical bonding information that can effectively guide through the development of more efficient … more
Date: May 2016
Creator: Rimal, Sirish
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Charged Particle Transport and Confinement Along Null Magnetic Curves and in Various Other Nonuniform Field Configurations for Applications in Antihydrogen Production

Description: Comparisons between measurements of the ground-state hyperfine structure and gravitational acceleration of hydrogen and antihydrogen could provide a test of fundamental physical theories such as CPT (charge conjugation, parity, time-reversal) and gravitational symmetries. Currently, antihydrogen traps are based on Malmberg-Penning traps. The number of antiprotons in Malmberg-Penning traps with sufficiently low energy to be suitable for trappable antihydrogen production may be reduced by the el… more
Date: May 2016
Creator: Lane, Ryan A.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Child Centered Play Therapy with Children Exhibiting Aggressive Behaviors

Description: Aggressive behaviors in childhood currently serve as the leading cause of counselor referrals within the United States. Children exhibiting maladaptive aggressive symptomology are at an increased risk for highly externalized and problematic behaviors across the lifespan. Emotional self-regulation and empathy are two constructs currently believed to be closely related to aggression, but a lack of research exploring these variables currently exists in the counseling literature. In this study I ex… more
Date: May 2016
Creator: Wilson, Brittany
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Clinical Case Study of Rumination and Emesis in an Adult Male with Intellectual Disability

Description: An evaluation of a series of interventions was conducted for an individual who engaged in life-threatening rumination and emesis. There is substantial research indicating that the delivery of peanut butter (Barton & Barton, 1985; Greene, Johnston, Rossi, Racal, Winston, & Barron, 1991) and/or chopped bread following meals (Thibadeau, Blew, Reedy, & Luiselli, 1999), chewing gum (Rhine & Tarbox, 2009), and satiation procedures (Dudley, Johnston, & Barnes, 2002; Lyons, Rue, Luiselli, & DiGennario,… more
Date: May 2016
Creator: DeLapp, Christina M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Commercial Diplomacy: The Berlin-Baghdad Railway and Its Peaceful Effects on Pre-World War I Anglo-German Relations

Description: Slated as an economic outlet for Germany, the Baghdad Railway was designed to funnel political influence into the strategically viable regions of the Near East. The Railway was also designed to enrich Germany's coffers with natural resources with natural resources and trade with the Ottomans, their subjects, and their port cities... Over time, the Railway became the only significant route for Germany to reach its "place in the sun," and what began as an international enterprise escalated into a… more
Date: May 2016
Creator: Bukaty, Ryan Michael
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
Back to Top of Screen