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open access

Two Argentine Song Sets: A Comparison of Songs by De Rogatis and Ginastera

Description: Latin American classical vocal repertoire is vast, but in the United States, we only hear a fairly limited part of this literature. Much of this repertoire blends western European classical music traditions and native folk music traditions. One example of such a Latin American vocal work that is well-known in the United States is Alberto Ginastera's frequently performed song set from 1943, Cinco canciones populares argentinas. However, another lesser-known, earlier work, Cinco canciones argenti… more
Date: August 2018
Creator: Abe, Shoko
Partner: UNT Libraries
open access

The Effects of Contingency Type on Accuracy and Reaction Time

Description: Positive and negative reinforcement contingencies have been compared in terms of preference, but the differential effects of positive and negative reinforcement on reaction time and accuracy with other variables controlled remain unclear. Fifteen undergraduate students participated in a sound discrimination task that involved random mixed-trial presentations of positive and negative reinforcement contingencies. The participants' goal was to correctly identify whether the tone was shorter or lon… more
Date: August 2018
Creator: Adams, Owen James
Partner: UNT Libraries
open access

A Study of the Impact and Influence of the Recordings and Pedagogy of David Baldwin

Description: David Baldwin has been the trumpet professor at the University of Minnesota since 1974. His most celebrated accomplishment is his recording of the Charlier 36 Etudes de Transcendantes and the Marcel Bitsch Vingt Etudes. In addition to this recording Baldwin has made recordings of etude books by Small, St. Jacome, Arban, Caffarelli, Smith, and the 32 Etudes de Perfectionnement also by Charlier. The quality of performance on all of these makes them excellent reference recordings. The back cover o… more
Date: August 2018
Creator: Adams, Richard (Richard James)
Partner: UNT Libraries
open access

Electrically Tunable Absorption and Perfect Absorption Using Aluminum-Doped Zinc Oxide and Graphene Sandwiched in Oxides

Description: Understanding the fundamental physics in light absorption and perfect light absorption is vital for device applications in detector, sensor, solar energy harvesting and imaging. In this research study, a large area fabrication of Al-doped ZnO/Al2O3/graphene/Al2O3/gold/silicon device was enabled by a spin-processable hydrophilic mono-layer graphene oxide. In contrast to the optical properties of noble metals, which cannot be tuned or changed, the permittivity of transparent metal oxides, such a… more
Date: December 2018
Creator: Adewole, Murthada Oladele
Partner: UNT Libraries
open access

Information Content of Non-GAAP Earnings of Cross-Listed Companies

Description: To supplement earnings reported under generally accepted accounting principles (GAAP), public companies often voluntarily report alternative measures of earnings called non-GAAP earnings (NGE). These companies assert that NGE exclude the effect of non-recurring transactions, thereby helping users of financial information to better assess the company's past performance and prospects. Because NGE measures are not well defined, managers can exploit the inherent discretion in calculating NGE to mis… more
Date: May 2018
Creator: Adhikari, Subash
Partner: UNT Libraries
open access

Applications of Metallic Clusters and Nanoparticles via Soft Landing Ion Mobility, from Reduced to Ambient Pressures

Description: Nanoparticles, simple yet groundbreaking objects have led to the discovery of invaluable information due to their physiological, chemical, and physical properties, have become a hot topic in various fields of study including but not limited to chemistry, biology, and physics. In the work presented here, demonstrations of various applications of chemical free nanoparticles are explored, from the determination of a non-invasive method for the study of the exposome via using soft-landing ion mobil… more
Date: August 2018
Creator: Aguilar Ayala, Roberto
Partner: UNT Libraries
open access

Hydrophobicity of Magnetite Coating on Low Carbon Steel

Description: Superhydrophobic coatings (SHC) with excellent self-cleaning and corrosion resistance property is developed on magnetite coated AISI SAE 1020 steel by using a simple immersion method. Roughness measurement, scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), contact angle measurement (CAM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), potentiodynamic polarization test, electrochemical impedance spectroscopy (EIS), … more
Date: August 2018
Creator: Akhtar, Mst Alpona
Partner: UNT Libraries
open access

Oil in Ghana: a curse or not? Examining environmental justice and the social process in policymaking

Description: There is great expectation that oil development in Ghana will catapult the nation towards prosperity and lead to drastic improvement in the wellbeing of Ghanaians. However, there is also concern that Ghana could fail to achieve these due to the resource curse notwithstanding the fact that scholars of the curse have yet to agree on the inevitability of the curse. Resource curse scholars adduce different reasons for its occurrence or absence. One thing common among the scholars, however, is that … more
Date: May 2018
Creator: Akon Yamga, Gordon
Partner: UNT Libraries
open access

Long-Term Citizen Science Water Monitoring Data: An Exploration of Accuracy over Space and Time

Description: The Texas Stream Team (TST) is one of an increasing number of citizen science water monitoring programs throughout the US which have been continuously collecting surface water quality data under quality assurance protocols for decades. Volunteer monitoring efforts have generated monitoring datasets that are long-term, continuous, and cover a large geographic area - characteristics shown to be valuable for scientists and professional agencies. However, citizen science data has been of limited u… more
Date: December 2018
Creator: Albus, Kelly
Partner: UNT Libraries
open access

Influence of Social Media on Decision Making of the Kuwait National Assembly Members: Case Study

Description: In Kuwait, an increase in the use of social media by the Kuwait National Assembly (KNA) has allowed it members to reach out to the public and so advance their political agenda. This study examines social media influences on the decision making process; addresses the lack of academic research in relation to KNA members; and seeks to understand the extent to which public political engagement using social media might affect the outcome of their decision making. The proposed social media influence … more
Date: December 2018
Creator: Alfarhoud, Yousef T.
Partner: UNT Libraries
open access

Exploring Growth Kinematics and Tuning Optical and Electronic Properties of Indium Antimonide Nanowires

Description: This dissertation work is a study of the growth kinematics, synthesis strategies and intrinsic properties of InSb nanowires (NWs). The highlights of this work include a study of the effect of the growth parameters on the composition and crystallinity of NWs. A change in the temperature ramp-up rate as the substrate was heated to reach the NW growth temperature resulted in NWs that were either crystalline or amorphous. The as-grown NWs were found to have very different optical and electrical pro… more
Date: December 2018
Creator: Algarni, Zaina Sluman
Partner: UNT Libraries
open access

A Random Walk Version of Robbins' Problem

Description: Robbins' problem is an optimal stopping problem where one seeks to minimize the expected rank of their observations among all observations. We examine random walk analogs to Robbins' problem in both discrete and continuous time. In discrete time, we consider full information and relative ranks versions of this problem. For three step walks, we give the optimal stopping rule and the expected rank for both versions. We also give asymptotic upper bounds for the expected rank in discrete time. Fina… more
Date: December 2018
Creator: Allen, Andrew
Partner: UNT Libraries
open access

Why Dance? The Effects of a Group Dance Period on Social Attending, On-Task Behavior, Affect, Stereotypical Behavior, and Disruptive Behavior of Clients of an Autism Treatment Program

Description: Dance is an enjoyable activity that children can engage in across the lifespan. Many children with autism have limited leisure activity, such as dance, and also have challenges in terms of overall health related to physical activity. Previous research suggests that there are both immediate and prolonged benefits of exercise. The purpose of the present study was to evaluate the effects of a group dance period on on-task behavior, social attending, affect, stereotypic behavior, and disruptive beh… more
Date: May 2018
Creator: Allen, Emerald Elizabeth
Partner: UNT Libraries
open access

Teaching Outside the Box: Student and Teacher Perceptions of Flexible Learning Environments Outside the 21st Century Classroom

Description: The purpose of this study was to ascertain student and teacher perceptions of the environment in which student learning takes place and their perceptions of how it has helped them in the cognitive and social domains. Data collected were through student and teacher perception surveys, student and teacher perception questionnaires, classroom observations, student focus group discussions, and teacher interviews. Themes that emerged from the data sources were student interactions, students' autonom… more
Date: May 2018
Creator: Allison, Chelsea B.
Partner: UNT Libraries
open access

"Her Name Was"

Description: Her Name Was is an examination of the oppression of transgender people in a society that is built on the nominalization of cisgender people, those who gender matchers their sex assigned at birth, and how this oppression lends itself to violence. In the summer of 2015, the body of Shade Schuler, an African American transgender woman, was found in a field outside of Dallas, Texas. Ms. Shade is part of an alarming epidemic of escalating levels of targeted violence against the transgender community… more
Date: August 2018
Creator: Almendariz, Sergio E
Partner: UNT Libraries
open access

Silver(I) and Copper(I) Complexes from Homoleptic to Heteroleptic: Synthesis, Structure and Characterization

Description: A plethora of novel scientific phenomena and practical applications, such as solid-state molecular solar cells and other optoelectronic devices for energy harvesting and lighting technologies, have catalyzed us to synthesize novel compounds with tunable properties. Synthetic routes, single crystal structures, and spectral and materials properties are described. Reactions of Ag(I) and Cu(I) precursors with various types of ligands -- including the azolates, diimines, and diiphosphines -- lead to… more
Date: December 2018
Creator: Almotawa, Ruaa Mohammed
Partner: UNT Libraries
open access

Radio Resource Control Approaches for LTE-Advanced Femtocell Networks

Description: The architecture of mobile networks has dramatically evolved in order to fulfill the growing demands on wireless services and data. The radio resources, which are used by the current mobile networks, are limited while the users demands are substantially increasing. In the future, tremendous Internet applications are expected to be served by mobile networks. Therefore, increasing the capacity of mobile networks has become a vital issue. Heterogeneous networks (HetNets) have been considered as a … more
Date: August 2018
Creator: Alotaibi, Sultan Radhi
Partner: UNT Libraries
open access

Studies in Trypsin as an Alarm Substance in Zebrafish

Description: Previous studies have shown that fish release alarming substances into the water to alert their kin to escape from danger. In our laboratory, we found that zebrafish produce trypsin and release it from their gills into the environment when they are under stress. By placing the zebrafish larvae in the middle of a small tank and then placing trypsin at one end of the tank, we observed that the larvae moved away from the trypsin zone and almost to the opposite end of the tank. This escape response… more
Date: August 2018
Creator: Alsrhani, Abdullah Falleh
Partner: UNT Libraries
open access

The Use of Technology in Early Childhood Schools and Homes and Its Impact on the Social and Language Development of Children: Perspectives of Parents and Teachers in Kuwait

Description: This study was aimed at understanding the use of technology in early childhood school and home settings as well as its impact on students' social and language development, specifically with children aged four to seven from two schools (Kindergarten and elementary) in Kuwait. The study followed a qualitative design in which the interpretative approach was applied. Non-participant observations were conducted to gather data concerning the actual use of technology in the classrooms, they were follo… more
Date: August 2018
Creator: Alsuhail, Saffa Z A J Zaid
Partner: UNT Libraries
open access

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
Partner: UNT Libraries
open access

Contingency Management of Physical Rehabilitation: The Role of Feedback

Description: Modern advances in technology have allowed for an increase in the precision with which we are able to measure, record, and affect behavior. These developments suggest that the domains in which behavior analysis might contribute are considerably broader than previously appreciated, for instance the area of behavioral medicine. One way the field of behavior analysis can begin to address problems in behavioral medicine is with biosensor technology, like surface electromyography (sEMG). For sEMG te… more
Date: December 2018
Creator: Armshaw, Brennan P
Partner: UNT Libraries
open access

The Design and Development of Lightweight Composite Wall, Roof, and Floor Panels for Rigid Wall Shelter

Description: This thesis presents a research effort aimed at developing a stronger, lighter, and more economic shelter using rigid wall panels. Reported herein is insulation research, wall and roof panel design and testing, floor section modeling and strength calculations, and cost and weight calculations. Beginning stages focus on developing solid wall and roof panels using cold-formed steel corrugated sheathing and members, as well as polyurethane spray foam for insulation. This research includes calculat… more
Date: May 2018
Creator: Artman, Jeremy J
Partner: UNT Libraries
open access

An Ethnography of Direct-to-Consumer Genomics [DTCG]: Design Anthropology Insights for the Product Management of a Disruptive Innovation

Description: Direct-to-consumer genomics (DTCG) health testing offers great promise to humanity, however to date adoption has lagged as a result of consumer awareness, understanding, and previous government regulations restricting DTCG companies from providing information on an individual's genetic predispositions. But in 2017 the broader DTCG market which also includes genealogical testing demonstrated exponential growth, implying that DTCG is starting to diffuse as an innovation. To better understand the … more
Date: August 2018
Creator: Artz, Matthew
Partner: UNT Libraries
open access

Anthropology of Aging: Assessment of Old Age Needs and Ethical Issues regarding the Use of Assistive Technologies

Description: The main goal of this research has been to investigate elderly people's needs, perceptions, fears, hopes, and expectation regarding elderly care, including ethical issues linked to assistive technologies. As faith seems to take an important place in how some elders face the aging process, the spiritual dimension was also included. Therefore, the research was conducted among 15 church congregants. Results show that most respondents fear the physical and mental decay due to aging, often resulting… more
Date: December 2018
Creator: Atibaka, Sunday O
Partner: UNT Libraries
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