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Two Argentine Song Sets: A Comparison of Songs by De Rogatis and Ginastera
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 argentinas (1923), by fellow Argentine composer Pascual De Rogatis (1880-1980) deserves attention as well. As with Ginastera's set, De Rogatis' songs are based on Argentine folk genres, but contain stylistic features of European classical music of its time. De Rogatis' neglected songs are a significant, overlooked part of Argentine classical music history, and a full understanding of well-known works such as Ginastera's song set and of the genre as a whole, must include attention to De Rogatis' Cinco canciones argentinas. Beyond vocal repertoire, De Rogatis' songs are an important part of the development of Argentine classical music. While Western musical trends change rapidly, folk music remains largely unchanged. Both De Rogatis and Ginastera were proud of their Argentine heritage, and incorporated traditional music into their compositions. I …
Date:
August 2018
Creator:
Abe, Shoko
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of Contingency Type on Accuracy and Reaction Time
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 longer than 600 milliseconds. On positive reinforcement trials, the participants received feedback and money tallies only if they identified the sound length correctly, with each correct response in the positive reinforcement trials earning the participant 10 cents. On negative reinforcement trials, the participants received feedback and money tallies only if they identified the sound length incorrectly, with incorrect trials subtracting 10 cents from the participants' total money (which began at $4.00 to equalize the weights of the positive and negative reinforcement contingencies). Accuracy analyses showed a relatively curvilinear relationship between the number of errors for each participant and the binned duration of the sound stimulus, with no differences across the positive and negative reinforcement conditions. Results also indicated weak linear negative correlations at the single subject level between comparison stimulus duration and reaction time, with …
Date:
August 2018
Creator:
Adams, Owen James
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Study of the Impact and Influence of the Recordings and Pedagogy of David Baldwin
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 of the Etudes 32 de Perfectionnement reveals that the two-CD album, with a total run time of 115:35, was recorded over a span of four days. Endurance is a topic that all brass players confront. Baldwin wrote an etude book titled Lips of Steel that also contains two previously published articles on the topic of endurance. His ideas on endurance reveal a unique approach. This study analyzes the pedagogical concepts in those articles and in Lips of Steel. In addition to his recording projects, Baldwin has had many successful students. Thomas Rolfs and Lynn Erickson are both members of full-time professional orchestras. Larry Griffin, Scott Hagarty, and many others built their careers as professors of trumpet. An investigation of Baldwin's influence on …
Date:
August 2018
Creator:
Adams, Richard (Richard James)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Applications of Metallic Clusters and Nanoparticles via Soft Landing Ion Mobility, from Reduced to Ambient Pressures
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 mobility (SLIM) deposited nanoparticles as a matrix-assisted laser desorption/ionization (MALDI-MS) matrix replacement, to the direct SLIM-exposure of nanoparticles onto living organisms. While there is plenty of published work in soft-landing at operating pressures of 1 Torr, the work presented here shows how this technology can be operated at the less common ambient pressure. The ease of construction of this instrument allows for various modifications to be performed for a wide array of applications, furthermore the flexibility in metallic sample, operating pressure, and deposition time only open doors to many other future applications. The work presented will also show that our ambient SLIM system is also able to be operated for toxicological studies, as the operation at ambient pressure opens the door to new applications where vacuum conditions are …
Date:
August 2018
Creator:
Aguilar Ayala, Roberto
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Hydrophobicity of Magnetite Coating on Low Carbon Steel
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), and qualitative characterization of self-cleaning behavior, antifouling property and durability of the coatings are assessed. A water contact angle as high as 152o on the coated surface with excellent self-cleaning and resistivity to corrosion and good longevity in atmospheric air is obtained. Self-cleaning test results prove that these surfaces can find applications in large scale production of engineering materials. Potentiodynamic polarization tests and EIS tests confirm that the superhydrophobic low carbon steel surfaces have better resistance to corrosion compared to bare steel and magnetite coated steel in 3.5% NaCl solution. But the longevity of the coated steel surfaces in 3.5% salt solution is limited, which is revealed by the immersion durability test. However, hydrophobic coatings (HC) have better stability in normal tap water, and it can stay unharmed up to 15 days. Finally, hydrophobic coatings on low carbon steel surface retains hydrophobic …
Date:
August 2018
Creator:
Akhtar, Mst Alpona
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Proposed U.S.-EU Trade Negotiations: Hitting Pause on a Trade War?
This report discusses the announcement by the United States and European Union (EU) that they are at a "new phase" in their relationship for "freer, fairer, and more reciprocal trade." The announcement came on July 25, 2018 at a challenging time for transatlantic trade relations.
Date:
August 9, 2018
Creator:
Akhtar, Shayerah Ilias
Object Type:
Report
System:
The UNT Digital Library
U.S.-EU Trade and Economic Issues
This report discusses U.S.-EU trade and economic relations, which currently face heightened tension, particularly due to the Trump Administration's trade policy, which is focusing on unilateral tariff measures under U.S. trade law and taking a critical view of the U.S. role in international economic cooperation. Given U.S.-EU historical joint leadership on global trade and economic issues, these developments could have implications for the rules-based international trading system, a foundation of the global economic order that has contributed to global economic growth and stability in the post-World War II era.
Date:
August 1, 2018
Creator:
Akhtar, Shayerah Ilias
Object Type:
Report
System:
The UNT Digital Library
Synthesis of Amorphous InSb Nanowires and a Study of the Effects of Laser Radiation and Thermal Annealing on Nanowire Crystallinity
This article presents a strategy to grow amorphous InSb (a-InSb) nanowires (NWs) in a chemical vapor deposition (CVD) system.
Date:
August 9, 2018
Creator:
Algarni, Zaina; Singh, Abhay & Philipose, Usha
Object Type:
Article
System:
The UNT Digital Library
"Her Name Was"
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. This documentary pulls back the curtain as it captures the feelings and struggles of the transgender community as they attempt to navigate and survive in a cis dominating society.
Date:
August 2018
Creator:
Almendariz, Sergio E
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Radio Resource Control Approaches for LTE-Advanced Femtocell Networks
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 promising paradigm for future mobile networks. Accordingly, the concept of small cell has been introduced in order to increase the capacity of the mobile networks. A femtocell network is a kind of small cell networks. Femtocells are deployed within macrocells coverage. Femtocells cover small areas and operate with low transmission power while providing high capacity. Also, UEs can be offloaded from macrocells to femtocells. Thus, the capacity can be increased. However, this will introduce different technical challenges. The interference has become one of the key challenges for deploying femtocells within a certain macrocells coverage. Undesirable impact of the interference can degrade the performance of the mobile networks. Therefore, radio resource management mechanisms are needed in order to address key challenges of deploying femtocells. The objective of …
Date:
August 2018
Creator:
Alotaibi, Sultan Radhi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Studies in Trypsin as an Alarm Substance in Zebrafish
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 was significant and did not occur in response to the control substances, bovine serum albumin (BSA), Russell's viper venom (RVV), and collagen. Also, previously, we had shown that the trypsin could act via a protease-activated receptor-2 (PAR2) on the surface of the cells. Therefore, we hypothesized that trypsin would induce a change in neuronal activity in the brain via PAR2-mediated signaling in cells on the surface of the fish body. To investigate whether the trypsin-responsive cells were surface cells, we generated a primary cell culture of zebrafish keratinocytes, confirmed these cells' identity by specific marker expression, and then incubated these cells with the calcium indicator Fluo-4 and exposed them to trypsin. By …
Date:
August 2018
Creator:
Alsrhani, Abdullah Falleh
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
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
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 followed by interviews with teachers and a group of parents from each classroom. The study used Vygotsky's social development theory as a framework for the analysis of data. The analysis showed limitations in the use of technology in the classroom; teachers identified a need for training to increase their knowledge about how to integrate technology into instruction. Also, the limited availability of up-to-date technology was viewed as a challenge. Teachers and parents agreed that the use of technology may foster social and language development for most students, on the condition that their use is supervised and guided by an adult. However, they also perceived that technology could have a negative impact on the development of students' social development, an area that requires further investigation.
Date:
August 2018
Creator:
Alsuhail, Saffa Z A J Zaid
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Arlington Chapter Secretary Notes, August 11, 2018
A document that collects the notes taken by John Anderson, the chapter secretary, during the monthly meeting of the TXSSAR Arlington Chapter (#7).
Date:
August 11, 2018
Creator:
Anderson, John D.
Object Type:
Text
System:
The UNT Digital Library
Oral History Interview with Richard Andrew, August 3, 2018
The National Museum of the Pacific War presents an interview with Richard Andrew. Andrew joined the Army in June of 1943. He served with the 34th Infantry Division, 133rd Infantry Regiment, 1st Battalion, Company B. Beginning late 1943, Andrew traveled aboard the USS Butler (DD-636) to Africa, participating in additional training. In January of 1944 they traveled to Naples, Italy, and participated in the Italian Campaign on the front line battering the Bernhardt Line defenses. From March through June, they participated in the Battle of Anzio. Andrew was discharged in December of 1945.
Date:
August 3, 2018
Creator:
Andrew, Richard
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Richard Andrew, August 3, 2018
The National Museum of the Pacific War presents an interview with Richard Andrew. Andrew joined the Army in June of 1943. He served with the 34th Infantry Division, 133rd Infantry Regiment, 1st Battalion, Company B. Beginning late 1943, Andrew traveled aboard the USS Butler (DD-636) to Africa, participating in additional training. In January of 1944 they traveled to Naples, Italy, and participated in the Italian Campaign on the front line battering the Bernhardt Line defenses. From March through June, they participated in the Battle of Anzio. Andrew was discharged in December of 1945.
Date:
August 3, 2018
Creator:
Andrew, Richard
Object Type:
Text
System:
The Portal to Texas History
N. W. Ayer & Son's American Newspaper Annual and Directory OCR Text Dataset
Dataset of OCR text from N. W. Ayer & Son's American Newspaper Annual and Directory. This dataset includes volumes covering the years 1910 to 1922. In all there are 25 volumes comprised of 16,669 pages of text.
Date:
August 22, 2018
Creator:
Andrews, Pamela
Object Type:
Dataset
System:
The UNT Digital Library
An Ethnography of Direct-to-Consumer Genomics [DTCG]: Design Anthropology Insights for the Product Management of a Disruptive Innovation
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 sociocultural forces affecting diffusion, adoption, and satisfaction, qualitative ethnographic research was conducted with DTCG genealogy and health consumers. The data was qualitatively analyzed using thematic analysis to understand the similarities and differences in beliefs, attitudes, intentions, and mediating factors that have influenced consumers. Design anthropology theory and methods were used to produce ethnographically informed insights. The insights were then translated into actionable product management and business strategy recommendations.
Date:
August 2018
Creator:
Artz, Matthew
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Conformal and Stochastic Non-Autonomous Dynamical Systems
In this dissertation we focus on the application of thermodynamic formalism to non-autonomous and random dynamical systems. Specifically we use the thermodynamic formalism to investigate the dimension of various fractal constructions via the, now standard, technique of Bowen which he developed in his 1979 paper on quasi-Fuchsian groups. Bowen showed, roughly speaking, that the dimension of a fractal is equal to the zero of the relevant topological pressure function. We generalize the results of Rempe-Gillen and Urbanski on non-autonomous iterated function systems to the setting of non-autonomous graph directed Markov systems and then show that the Hausdorff dimension of the fractal limit set is equal to the zero of the associated pressure function provided the size of the alphabets at each time step do not grow too quickly. In trying to remove these growth restrictions, we present several other systems for which Bowen's formula holds, most notably ascending systems. We then use these various constructions to investigate the Hausdorff dimension of various subsets of the Julia set for different large classes of transcendental meromorphic functions of finite order which have been perturbed non-autonomously. In particular we find lower and upper bounds for the dimension of the subset of the Julia …
Date:
August 2018
Creator:
Atnip, Jason
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Keep Calm and Play On: The Effects of Grit, Mindfulness, and Goal Orientation on Sport Anxiety and Performance
Achievement motivation theory suggests there are two primary approaches to achievement tasks: to appear competent or to develop a skill. These two different approaches to performance yield different affective and behavioral responses. Athletes holding a performance goal orientation tend to respond to challenges with behaviors exemplifying learned helplessness and increased anxiety. Athletes holding a mastery goal orientation tend to respond to challenges with greater effort and experience less sport-related anxiety. Individual athlete factors, such as grit, mindfulness, and achievement orientation may influence how athletes experience their environment and their levels of sport anxiety, and may interact with athletes' achievement motives to influence performance. I used hierarchical multiple regressions to test the main effects of feedback and mindfulness, and feedback and goal orientation, to determine if either mindfulness or goal orientation moderated the effects of feedback on performance. I also used simple regression to determine the relative predictive strength of mindfulness, grit, and goal orientation on athletes' experience of sport anxiety. Mindfulness, but not goal orientation, was a significant moderator of the feedback-shooting performance relationship, but particularly for athletes low in mindfulness; mastery-goal orientation, independently of feedback, was also a significant predictor of task performance. Mindfulness also emerged as the strongest …
Date:
August 2018
Creator:
Auerbach, Alex
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Corrosion, Erosion andWear Behavior of Complex Concentrated Alloys: A Review
This article presents a comprehensive view on corrosion, erosion, and wear behavior of complex concentrated alloys.
Date:
August 3, 2018
Creator:
Ayyagari, Aditya; Hasannaeimi, Vahid; Singh Grewal, Harpeet; Singh Arora, Harpreet & Mukherjee, Sundeep
Object Type:
Article
System:
The UNT Digital Library
Insights Into the Factors Influencing Student Motivation in Augmented Reality Learning Experiences in Vocational Education and Training
This article attempts to identify some of the components that positively affect student motivation in mobile augmented reality (AR) learning experiences to contribute to the design and development of motivational AR learning experiences for the Vocational Education and Training (VET) level of education.
Date:
August 21, 2018
Creator:
Bacca, Jorge; Baldiris, Silvia; Fabregat, Ramon & Kinshuk
Object Type:
Article
System:
The UNT Digital Library
Decision Making in a Miniature Market
Although behavior analysts have studied the effects of motivation on preference assessments, consumer behaviorist have not. The purpose of this study was to analyze the effect of the temporary removal of a choice on the order and frequency of purchases after the candy returned. Seventy percent of the time the participant purchased the removed candy first and 60% of the time the participant purchased more than in the baseline.
Date:
August 2018
Creator:
Barnes, John
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
N-Doped graphene/C₆₀ covalent hybrid as a new material for energy harvesting applications
This article systematically investigates the degree of functionalization and the key structural features of the N-G/C₆₀ hybrid by a number of techniques including thermogravimetric analysis, X-ray photoelectron and Raman spectroscopies and transmission electron and atomic force microscopies.
Date:
August 26, 2018
Creator:
Barrejón, Myriam; Arellano, Luis M.; Gobeze, Habtom B.; Gómez-Escalonilla, María J.; Fierro, Jose Luis G.; D'Souza, Francis et al.
Object Type:
Article
System:
The UNT Digital Library
A Comparative Evaluation of Outcomes between Indirect Analyses and Functional Analytic Procedures
While descriptive assessment outcomes show limited correspondence with experimental analysis outcomes, they are still often used in the treatment of problem behavior. The most effective way of treating problem behavior is by manipulating its controlling variables; however, if descriptive analyses are not depicting accurate environment-behavior relations, then treatments based off of descriptive analysis results have a higher chance of failing. The current study looks to replicate and extend the literature on utility descriptive assessments by analyzing three different data analysis methods. Three children with a diagnosis of autism were exposed to two types of experimental analyses. Following experimental analyses, descriptive assessments were completed and analyzed to determine correlations between the behavior and environmental events. The results from the three investigated data analysis methods were then compared to the outcomes of the experimental analyses.
Date:
August 2018
Creator:
Basham, Annika J
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library