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An Analysis of Emma Diruf Seiler's Teaching Philosophy and Contribution to Voice Pedagogy
Emma Diruf Seiler (1821-1886) was a Bavarian-American voice teacher and scientist who wrote and published Altes und Neues über die Ausbildung des Gesangorganes mit besonderer Rücksicht auf die Frauenstimme (Old and New in the Art of Singing, with Special Attention to the Female Voice) in 1861 while working in Leipzig. It was translated by William Henry Furness and published in Philadelphia as The Voice in Singing in 1868. This pedagogue and her writings are largely unknown to those who study historic bel canto pedagogy. In the opening of Seiler's pamphlet, she explained her purpose for writing was "to bring into harmony things which have always been treated separately, the Science and the Art of Singing..." Aside from brief comments in a few books on vocal pedagogy, Emma Seiler is largely unknown. Neither her contribution to voice science and pedagogy, nor the impact of her integrated philosophy on teaching have been subjected to scholarly scrutiny. The purpose of this document is to explore her philosophy on teaching, her method of female vocal instruction, and her impact on voice instruction. This dissertation historicizes evidence-based pedagogy through Seiler's example.
Date:
May 2019
Creator:
Sullivan, Kristen (Kristen Janell)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Beyond the Binary: The Intersection of Gender and Cross-Cultural Identity in Reena Esmail's Life and Choral Works
Beyond the Binary explores the intersection of gender with cross-cultural identity in composer Reena Esmail's professional life and choral music. This intersection manifests in her musical style, which accesses the resonant spaces between Western and Indian classical music. I argue that it is through the convergence of Esmail's gender identity with her cross-cultural identity that her compositions challenge gender norms and break down perceived barriers between East and West, inviting her listeners into an intersectional feminist space. This project synthesizes musicological, theoretical, and ethnographic methods, and is meant as a starting point for choral musicians and scholars to consider cultural difference and its impact on choral music. What begins as a consideration of social themes within Esmail's life and work culminates in a practical musical analysis and performance practice guide to aid conductors in preparation of Esmail's music. The compositions discussed are I Rise: Women in Song (2016), Take What You Need (2016), TaReKiTa (2016), Tuttarana (2014), and This Love Between Us: Prayers for Unity (2016).
Date:
May 2019
Creator:
Pope, Lindsay (Choral conductor)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Historical and Pedagogical Significance of Excerpts by André-Ernest-Modeste Grétry (1741-1813)
This collection of 9 vocal works, taken from the oœuvre of André-Ernest-Modeste Grétry (1741-1813), was chosen for their utility in teaching undergrad voice majors. This collection offers a group of songs that are attractive in their simplicity allowing the time in their lessons to be devoted to the instruction of French pronunciation. Grétry's attention to detail in the setting of French prosody provides undergraduate singers with a collection of songs that offer an immediate understanding as to the nuances of the French language. With funding from an I-GRO grant through the University of North Texas, research was conducted in the archives of the Bibliothèque nationale de France, and work continued in the Grétry Museum in Liège, Belgium. The primary sources found within these locations formulated valuable insights into to the life and influence of Grétry, and provided first-hand experience with research techniques within foreign libraries. This research has solidified the relationship between Grétry's compositional style and its usefulness within the undergraduate voice studio.
Date:
May 2019
Creator:
Youngs, Jennifer (Soprano)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Equivalence of the Rothberger and k-Rothberger Games for Hausdorff Spaces
First, we show that the Rothberger and 2-Rothberger games are equivalent. Then we adjust the former proof and introduce another game, the restricted Menger game, in order to obtain a broader result. This provides an answer in the context of Hausdorff spaces for an open question posed by Aurichi, Bella, and Dias.
Date:
May 2019
Creator:
Hiers, Nathaniel Christopher
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Flotsam: Men in Isolation
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Use of this item is restricted to the UNT Community
An interrogation of male behavior in isolated masculine spaces through short stories, an essay, and chapters from a novel-in-progress.
Date:
May 2019
Creator:
Smith, Morgan Inigo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Quiet Flows the River
Quiet Flows the River explores the lives of the people living in the coastal area of Bangladesh. Affected by the consequences of climate change, they continue to adapt and struggle each day to survive in their homelands.
Date:
May 2019
Creator:
Nolok, Arnila Guha
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
American Lawn Addictions: Effects of Environmental Education on Student Preferences for Xeriscaping as an Alternative in North Central Texas, USA
Urban land use and land cover has changed in the USA, giving rise to the American lawn – manicured, resource-intensive, and non-native. Green infrastructure design has been suggested in the literature as a potential alternative to the American lawn when managed as native xeriscapes, which require little to no irrigation after establishment. Given the influence of public preference on landscaping decisions, what is the relationship between the perceived value and ecological benefits of the American lawn compared to such alternatives? Few studies have explored this question in addition to the effects of college courses on influencing student preferences, as future stakeholders, towards native xeriscapes as alternatives to the American lawn. This research measured the effects of an introductory environmental education (EE) course on measurably influencing undergraduate student preferences for four xeriscapes as alternatives to the American lawn. To measure these effects, this study utilized the perceptions of 488 students enrolled in an indirect introductory EE course and 131 students enrolled in an introductory non-EE course. Three key results emerged from this research. Students preferred the American lawn more than xeriscape alternatives, irrespective to course enrolled. Introductory non-EE did not have an effect on student preferences, whereas indirect introductory EE did …
Date:
May 2019
Creator:
Williams, Jared L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Processing Conditions on the Surface Morphology of Few-Layered WS2 Thin Films
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Use of this item is restricted to the UNT Community
Recent progress in layered transition metal dichalcogenides (TMDs) has led to various promising electronic and optoelectronic applications. However, the structure of materials plays a critical role in electronic and optoelectronic devices, and determines performance. Electronic and optoelectronic devices typically consist of multiple layers that form electrical homojunctions or heterojunctions. Therefore, in a device it can be expected that a WS2 layer may serve as the substrate for a subsequent layer in a multilayer device stack and determine how the layer grows. In transistor structures, roughness at the channel/gate dielectric interface introduces field variations and charge scattering. Therefore, understanding the relations between processing, surface morphology and properties is important. In this project, the effects of pulsed laser deposition (PLD) processing conditions on the surface morphology of few layered WS2 films were studied. WS2 films were synthesized under processing conditions that represent the extremes of surface supersaturation and kinetic energy transfer from the flux to the growing films, and evolution of the surface morphology was studied. The specific conditions were 1Hz/50mJ, 10Hz/50mJ, 1Hz/300mJ, and 10Hz/300mJ respectively. Combining AFM, XRD and Raman analyses, it was determined that deposition at 10Hz/300mJ, provided the best structural properties and surface morphology. Growth appeared to be 3D-cluster, …
Date:
May 2019
Creator:
Cai, Bimin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Manipulating Fear: The Texas State Government and the Second Red Scare, 1947-1954
Between 1947 and 1954, the Texas State Legislature enacted a series of eight highly restrictive anti-communist laws. Designed to protect political, military, and economic structures in the state from communist infiltration, the laws banned communists from participating the political process, required registration of all communists who entered the state and eventually outlawed the Communist Party. Drawn from perceptions about Cold War events, such as the Truman Doctrine and the Korean War, and an expanding economy inside of Texas, members of the state legislature perceived that communism represented a threat to their state. However, when presented with the opportunity to put the laws into action during the 1953 Port Arthur Labor Strike, the state government failed to bring any charges against those who they labeled as communists. Instead of actually curtailing the limited communist presence inside of the state, members of the state government instead used the laws to leverage political control throughout the state by attacking labor, liberals in education and government, and racial minorities with accusations of communism.
Date:
May 2019
Creator:
Bonewell, Shaffer Allen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Brazos
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Use of this item is restricted to the UNT Community
Brazos is a collection of poetry that comments on and critiques life in a small town in Texas. These poems situate the speaker both in this town and in spaces removed from the town, but the work always grapples with questions of how the speaker identifies himself via the relationship to that space. The creative portion is accompanied by a critical introduction that looks at the intersections of poetry and the lyric essay.
Date:
May 2019
Creator:
Carter, Justin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Denim Fiberboard Fabricated from MUF and pMDI Hybrid Resin System
In this study, a series of denim fiberboards are fabricated using two different resins, malamine urea formaldehyde (MUF) and polymeric methylene diphenyl diisocyanate (pMDI). Two experimental design factors (1) adhesive content and (2) MUF-pMDI weight ratio, were studied. All the denim fiberboard samples were fabricated following the same resin blending, cold-press and hot-press procedures. The physical and mechanical tests were conducted on the fiberboard following the procedures described in ASTM D1037 to obtain such as modulus of elasticity (MOE), modulus of rupture (MOR), internal bond (IB), thickness swell (TS), and water absorption (WA). The results indicated that the MOE was significantly affected by both factors. IB was affected significantly by weight ratio of different glue types, with 17 wt% more MDI resin portion in the core layer of the denim boards, the IB for total adhesive content 15% fiberboard was enhanced by 306%, while for total adhesive content 25% fiberboard, enhanced by 205%. TS and WA, with higher adhesive content used in denim boards' fabrication, and more pMDI portion in the core layer of the boards, the boards' TS and WA was reduced by up to 64.2% and 78.8%, respectively.
Date:
May 2019
Creator:
Cui, Zhiying
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Parallel Analysis of Aspect-Based Sentiment Summarization from Online Big-Data
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Use of this item is restricted to the UNT Community
Consumer's opinions and sentiments on products can reflect the performance of products in general or in various aspects. Analyzing these data is becoming feasible, considering the availability of immense data and the power of natural language processing. However, retailers have not taken full advantage of online comments. This work is dedicated to a solution for automatically analyzing and summarizing these valuable data at both product and category levels. In this research, a system was developed to retrieve and analyze extensive data from public online resources. A parallel framework was created to make this system extensible and efficient. In this framework, a star topological network was adopted in which each computing unit was assigned to retrieve a fraction of data and to assess sentiment. Finally, the preprocessed data were collected and summarized by the central machine which generates the final result that can be rendered through a web interface. The system was designed to have sound performance, robustness, manageability, extensibility, and accuracy.
Date:
May 2019
Creator:
Wei, Jinliang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Proximal Policy Optimization in StarCraft
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Use of this item is restricted to the UNT Community
Deep reinforcement learning is an area of research that has blossomed tremendously in recent years and has shown remarkable potential in computer games. Real-time strategy game has become an important field of artificial intelligence in game for several years. This paper is about to introduce a kind of algorithm that used to train agents to fight against computer bots. Not only because games are excellent tools to test deep reinforcement learning algorithms for their valuable insight into how well an algorithm can perform in isolated environments without the real-life consequences, but also real-time strategy games are a very complex genre that challenges artificial intelligence agents in both short-term or long-term planning. In this paper, we introduce some history of deep learning and reinforcement learning. Then we combine them with StarCraft. PPO is the algorithm which have some of the benefits of trust region policy optimization (TRPO), but it is much simpler to implement, more general for environment, and have better sample complexity. The StarCraft environment: Blood War Application Programming Interface (BWAPI) is open source to test. The results show that PPO can work well in BWAPI and train units to defeat the opponents. The algorithm presented in the thesis is …
Date:
May 2019
Creator:
Liu, Yuefan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Design, Synthesis and Characterization of Polymer and Protein Coated Hybrid Nanomaterials: Investigation of Prototypes for Antimicrobial and Anticancer Applications
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Use of this item is restricted to the UNT Community
This work involves synthesis and characterization of isotropic and anisotropic noble metal nanoparticles for applications ranging from antimicrobial uses to anticancer applications. These nanomaterials are stabilized in genuinely benign biomaterials ranging from polymers to cross linked proteins for targeted cancer treatments. The nanoparticles are found to have tunable optical properties.
Date:
May 2019
Creator:
Korir, Daniel Kiplangat
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Using Data Envelopment Analysis to Predict the Impact of Socioeconomic Variables on Instructional Spending Efficiency and Student Achievement at the Elementary Level
Public school finance and school accountability are highly contentious subjects. This correlational study illustrates campus level instructional spending efficiency by examining various input and output variables. The study utilizes data envelopment analysis of selected variables to compare elementary campuses and create instructional spending efficiency measures within purposively selected metropolitan educational service regions in Texas. The study analyzes elementary school instructional spending and student classification as economically disadvantaged compared to student achievement in English language arts. The study finds a direct relationship between instructional spending efficiency and student achievement. The relationship between the socioeconomic variable of economically disadvantaged status is inverse. This finding suggests that in depth examinations of highly inefficient, but relatively high academic performing cases, may uncover effective instructional or operational practices tailored to the needs of the sub-populations.
Date:
May 2019
Creator:
Ham, Richard Dale
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Invisible Woman: A Study of Black Women in Magazine Beauty Advertisements
This thesis study takes a mixed methods and black feminist approach to find out how black women are represented within the beauty advertisements of women's fashion magazines.
Date:
May 2019
Creator:
Arterbery, Andrea
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Examining Self-Service Kiosks in Quick-Service Restaurant Settings
Research is needed that examines the effects of kiosk technology on restaurant operational performance measures, such as total sales. The study employs a 2X2 between-subjects field experimental design to empirically test the hypothesized relationships proposed in the research model. The data collection site was Burger King located in the student union of a large Tier 1 research university in southwest USA. The independent variables included ordering method (kiosk vs. cashier) and operational volume (peak vs. off-peak). The dependent variables were cognitive and affective attitudes, behavioral intention, satisfaction, sales per person, and order time. Consumers at Burger King were approached before they started ordering their meal to ask for voluntary participation. If they agreed to participate, they were randomly assigned into two test groups. Participants in one test group used kiosk technology to order their meals, while those in the other test groups spoke with a cashier to order their meals. The same number of participants were recruited from peak and non-peak volumes. The seconds used to order was observed and recorded after consumer engagement with the ordering method. After participants ordered, they completed a paper survey that measured their behaviors while ordering with each method and asked participants to indicate …
Date:
May 2019
Creator:
Torres, Bryan C.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Implementation of Person-Centered Care (PCC): A Descriptive Case Study
To meet the growing demand for community-based adult services (CBAS) adult day health care (ADHC) programs, it is important these programs make the necessary modifications in their systems of care to embrace a person-centered care (PCC) model. This study was designed to create an assessment to determine a community-based CBAS/ADHC program's readiness to meet the new federal standards as determined by the program's current operational evidence and by center participants', their families' as well as staff's perspectives. This was measured by self-report of access to the community, choice of setting, individual rights, autonomy and independence, choice of services and supports, center accessibility as well as their needs and preferences in the practice. Results will assist similar CBAS/ADHCs in identifying the necessary modifications within their own program to continue as a certified licensed entity and remain a viable agency.
Date:
May 2019
Creator:
Cole, Min
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Patient Experience of Cultural Competency in a Hospital Setting
Anthropological research conducted in a local Texas hospital provides data to analyze cultural competency. Increasing health equity is a key aspect of cultural competency literature, hospital, and national goals. Examining the local context allows for the analysis of how one hospital can affect public health in the area by using patient-centered care. Using observational and interview data to create the ideal of the patient journey shows how patient families experience cultural competency. Overall, the patient families felt they experienced culturally competent healthcare, however from the hospital structure perspective there could more goals to attain.
Date:
May 2019
Creator:
Thomas, Ashley Nicole
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Isolation and Bioinformatic Characterization of Four Novel Bacteriophages from Streptomyces toxytricini
Six initial phage isolates with high titer lysates were obtained using Streptomyces toxytricini B-5426 as the host bacterium. These isolates were named Goby, Toma, Yosif, Yara, Deema, and Hsoos. However, upon completion of the sequencing, it was found that the Yara and Hsoos isolates were identical, as were Goby and Deema. As a result, final analysis was completed on only the four unique isolates. All of the phages mentioned above were isolated from soil samples from different locations. Also, they had different sizes of plaques, ranging from 0.3 – 0.9mm. Yosif had the largest plaque size. Yara's head diameter was 79nm with tail diameter of 94nm.
Date:
May 2019
Creator:
Alzaid, Hessah
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Design of Voltage Boosting Rectifiers for Wireless Power Transfer Systems
This thesis presents a multi-stage rectifier for wireless power transfer in biomedical implant systems. The rectifier is built using Schottky diodes. The design has been simulated in 0.5µm and 130nm CMOS processes. The challenges for a rectifier in a wireless power transfer systems are observed to be the efficiency, output voltage yield, operating frequency range and the minimum input voltage the rectifier can convert. The rectifier outperformed the contemporary works in the mentioned criteria.
Date:
May 2019
Creator:
Suri, Ramaa Saket
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
How You Correct Matters
Feedback is used in a variety of contexts to train staff and to teach individuals new skills. Despite its popularity, there is no consensus on how to deliver it. Different measures have been used to evaluate the effectiveness of feedback, such as accuracy of responses and the sequencing of feedback delivery. The purpose of this study was to compare two feedback procedures and to explore new ways to measure the effectiveness of feedback. Four undergraduate students were exposed to two conditions: feedback before + skip the opportunity to respond and feedback after an incorrect answer. Results showed that the number of correct answers and teaching time were similar in both conditions. However, session duration was lower in the feedback before + skip condition when compared to the feedback after condition. Finally, reported emotions correlated with participants' correct responding. This study demonstrates that it is more beneficial and efficient to teach learners how to engage in a correct performance, rather than to correct responses.
Date:
May 2019
Creator:
Winne, Jessica Kay
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States
In the development of covalent organic frameworks (COFs), often the scaffold linkers are assumed to be electro- and photoinactive, and this was also to be the case for 2,3,6,7,10,11-hexahydroxytriphenylene, a tritopic linker. However, as demonstrated in the present study, the reaction product of this linker, hexaoxatriphenylene, is electron rich and when connected to a suitable photosensitizer engages itself in an efficient excited-state charge separation process. In the present study, we have employed BF2-chelated dipyrromethenes (BODIPYs) as sensitizers, which are connected to hexaoxatriphenylene through the center boron, rendering paddle-wheel-type structures. Systematic photophysical, electrochemical, computational, and photochemical studies involving pump-probe femtosecond transient spectroscopy have been performed to establish efficient charge separation in these novel supramolecular structures.
Date:
May 2019
Creator:
Cantu, Robert
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects on the Use of Technology-Based Self-Monitoring for Students with Autism Spectrum Disorder: A Meta-Analysis
Self-monitoring involves teaching students to be aware of their own behavior, and be able to record whether the behavior happened or not. The present study uses meta-analysis of single case design (SCD) studies to evaluate the effectiveness of self-monitoring interventions that use electronic devices during implementation for individuals with autism spectrum disorder (ASD). Eligible studies were accessed to determine design quality, and examine the use of self-monitoring for individuals diagnosed with ASD. Studies were evaluated against inclusion-exclusion criteria. The studies that met inclusion criteria (n = 15) were assessed with the What Works Clearinghouse (WWC) standards for methodological rigor. The WWC standards were applied to baseline and intervention phases. There were a total of 12 studies with 32 students diagnosed with ASD that met SCD standards without, and with reservations. The 12 studies were evaluated using the Tau-U effect size metric to quantify the percentage of change that was attributed to the self-monitoring intervention. Overall, omnibus Tau-U was 0.96 (95% confidence interval [CI] = [0.89, 1.0]). Limitations and directions for future research are discussed.
Date:
May 2019
Creator:
Robertson, Ryan S
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library