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The Impact of Sociocultural and Information Communication Technology Adoption Factors on the Everyday Life Information Seeking Behavior of Saudi Students in the United States

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This study analyzes the sociocultural factors that affect Saudi students in the U.S. as they seek information and explores to what extent these factors impact their everyday life information seeking (ELIS) behavior and their information technology behavior (ITB). The factors in this study illustrate the unique sociocultural values that distinguish Saudi students from other international student groups: gender segregation, emphasis on religion, social support, and utilization of the consultation concept. After collecting data from an online survey, the data from linear regression analyses revealed that only one culture factor (the language barrier) showed a significant impact on Saudi student ELIS in the U.S., while the other factors were not statistically significant. Also, the findings indicated that perceived usefulness (PU) and perceived ease of use (PEU) were statistically significant to the ELIS of Saudi students. Furthermore, the study showed that after academic information, food and drink, entertainment, and health were the top student needs, the top ranking sources for everyday life seeking information were social media and the Internet. The findings of the study help to shed light on a sizable user group. As the fourth largest group of international students in the U.S., Saudi students have been underrepresented in research. …
Date: May 2019
Creator: Alkahtani, Latifah M
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Implementation of Person-Centered Care (PCC): A Descriptive Case Study (open access)

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
Implementations of Fuzzy Adaptive Dynamic Programming Controls on DC to DC Converters (open access)

Implementations of Fuzzy Adaptive Dynamic Programming Controls on DC to DC Converters

DC to DC converters stabilize the voltage obtained from voltage sources such as solar power system, wind energy sources, wave energy sources, rectified voltage from alternators, and so forth. Hence, the need for improving its control algorithm is inevitable. Many algorithms are applied to DC to DC converters. This thesis designs fuzzy adaptive dynamic programming (Fuzzy ADP) algorithm. Also, this thesis implements both adaptive dynamic programming (ADP) and Fuzzy ADP on DC to DC converters to observe the performance of the output voltage trajectories.
Date: May 2019
Creator: Chotikorn, Nattapong
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Increasing Effective Thermal Resistance of Building Envelope's Insulation Using Polyurethane Foam Incorporated with Phase Change Material (open access)

Increasing Effective Thermal Resistance of Building Envelope's Insulation Using Polyurethane Foam Incorporated with Phase Change Material

Incorporating insulation material with phase change materials (PCMs) could help enhance the insulation capability for further building energy savings by reducing the HVAC loadings. During the phase change process between the solid and liquid states, heat is being absorbed or released by PCMs depending on the surrounding temperature. This research explores the benefits of a polyurethane (PU)-PCM composite insulation material through infiltrating paraffin wax as PCM into PU open cell foam. The new PU-PCM composite provides extra shielding from the exterior hot temperatures for buildings. Through this study, it was demonstrated that PU-PCM composite insulation could potentially help building energy savings through reducing the loads on the HVAC systems based on the building energy modeling using EnergyPlus. The Zero Energy Lab (ZØE) at the University of North Texas was modeled and studied in the EnergyPlus. It is a detached building with all wall facades exposed to the ambient. It was determined that the new PU-PCM insulation material could provide 14% total energy saving per year and reduce the electricity use due to cooling only by around 30%.
Date: May 2019
Creator: Houl, Yassine
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Independence of Mania and Depression across 4 Years in Bipolar Disorder

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If mania and depression are part of the same pathological processes, one would predict that episodes of one prospectively increase the odds of episodes of the other. The aim of the present study was to test this hypothesis. For comparison purposes, their relationship was contrasted to the relationship between mania and periods of psychosis. Exploratory analyses also tested the degree to which episodes of each occur with greater frequency over time (i.e., kindling). Participants for the present study came from the Suffolk County Mental Health Project (N = 628), a study of first-admission patients with psychosis. Of these participants, 144 met diagnostic criteria for bipolar I disorder and were analyzed for the current study. Results indicated that mania in a given month predicted depression the following month, even after controlling for other symptoms. The reverse, however, was not the case. Mania and psychosis, in contrast, were found to be robust predictors of one another from month to month. Effects were not due to treatment or demographic differences. These findings provide evidence that mania and depression are weakly related. In contrast, mania and psychosis are more closely linked. Findings are consistent with suggestions that psychiatric nosology regroup mania more closely with …
Date: May 2019
Creator: Bennett, Charles B.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Infinitary Combinatorics and the Spreading Models of Banach Spaces (open access)

Infinitary Combinatorics and the Spreading Models of Banach Spaces

Spreading models have become fundamental to the study of asymptotic geometry in Banach spaces. The existence of spreading models in every Banach space, and the so-called good sequences which generate them, was one of the first applications of Ramsey theory in Banach space theory. We use Ramsey theory and other techniques from infinitary combinatorics to examine some old and new questions concerning spreading models and good sequences. First, we consider the lp spreading model problem which asks whether a Banach space contains lp provided that every spreading model of a normalized block basic sequence of the basis is isometrically equivalent to lp. Next, using the Hindman-Milliken-Taylor theorem, we prove a new stabilization theorem for spreading models which produces a basic sequence all of whose normalized constant coefficient block basic sequences are good. When the resulting basic sequence is semi-normalized, all the spreading models generated by the above good sequences must be uniformly equivalent to lp or c0. Finally, we investigate the assumption that every normalized block tree on a Banach space has a good branch. This turns out to be a very strong assumption and is equivalent to the space being 1-asymptotic lp. We also show that the stronger assumption …
Date: May 2019
Creator: Krause, Cory A.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Information Sharing and Storage Behavior via Cloud Computing: Security and Privacy in Research and Practice and Users' Trust

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This research contributes to the cloud computing (CC) literature and information science research by addressing the reality of information sharing and storage behavior (ISSB) of the users' personal information via CC. Gathering information about usage also allows this research to address the paradox between the research and practice. Additionally, this research explores the concept of trust and its role in the behavioral change relative to CC. The findings help reconcile the paradox between the two realms. Essay1 develops and tests cloud computing usage model (CCUM) that assesses ISSB. This model considers the main adoption determinants and the main drawbacks of CC. The study measures the main concerns of users found in the literature, perceived security and perceived privacy. The findings prove surprising on these concerns. Using multiple regression to analyze 129 valid survey responses, the results find that CC users are less concerned about the major issues of security and privacy and will use the technology based on peer usage. Essay 2 examines why users ignore the technology issues and elect to replace the traditional mechanisms for handling their personal information. The results of an interview-based study conducted on 11 normal users and 11 IT professionals clarify their perceptions about …
Date: May 2019
Creator: Al Smadi, Duha
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Insomnia and Cognitive Performance: A Systematic Review and Meta-Analysis

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Daytime cognitive performance and sleep/wake cycles are strongly interrelated, and cognitive dysfunction has been extensively investigated in relation to insomnia. However, methods and outcomes vary widely by study, making comparison difficult without more systematic evaluation. Review of the literature reveals discrepant findings for the relationship between both subjective and objective measures of cognitive performance and insomnia. The current meta-analysis included 42 studies investigating the relationship between insomnia and cognitive performance. Results confirmed the discrepant nature of previous findings and suggest that type of cognitive performance (e.g., simple attention, procedural memory, verbal functions) is important to consider when discussing the impact of insomnia. Mixed-effect meta-analysis of aggregate effect sizes suggest impairments in working memory, complex attention, and episodic memory are significantly associated with insomnia. Analysis of the grouped subjective cognitive performance effect size revealed no significant impact of insomnia. Average age and gender makeup of the sample, study quality, and type of insomnia measure (i.e., clinical or diagnostic criteria, validated scale, or single unvalidated item) did not consistently moderate findings. These results confirm the equivocal nature of the relationship between insomnia and cognitive performance. Overall, about 44% of the studies included in the analysis failed to use DSM or ICSD criteria …
Date: May 2019
Creator: Pinkston, Sophie Wardle
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Instructional Personnel Perceptions on Integrating Instructional Technology in K-12 Classrooms: A Case Study (open access)

Instructional Personnel Perceptions on Integrating Instructional Technology in K-12 Classrooms: A Case Study

Integrating digital pedagogy into instruction in a manner that promotes critical thinking and drives increased student achievement and engagement in all classrooms is a goal of many campuses and districts that invest heavily in hardware, software, and professional development on an annual basis. Digital pedagogy goals tend to center around preparing students for the 21st century workforce, promoting instruction that is more engaging, and providing deeper learning for all students; however, achieving these goals is not possible without teachers willing and able to effectively implement instructional technology into the content they are teaching. The conceptual framework consists of digital leadership, teacher engagement, and resources and supports. This case study focused on the district-wide integration of technology into instruction through the elements found in the conceptual framework. Educators, from kindergarten through twelfth grade were surveyed about their attitudes, self-efficacy perceptions and willingness to integrate digital pedagogies into their current teaching practices. The online survey that utilized Likert-like scales to gather demographic information as well educator perceptions on digital integration, teaching philosophy, digital self-efficacy, and leadership's focus and expectations regarding instructional technology. Additional data, from a variety of district documents, was also gathered on leadership, professional development, and infrastructure supports utilized to …
Date: May 2019
Creator: Agent, Renee L
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Introduction to Contemporary Characteristics in Twentieth-Century Piano Music for the Late-Intermediate Student: A Pedagogical Analysis of the Bagatelles, Opus 5 by Alexander Tcherepnin (open access)

An Introduction to Contemporary Characteristics in Twentieth-Century Piano Music for the Late-Intermediate Student: A Pedagogical Analysis of the Bagatelles, Opus 5 by Alexander Tcherepnin

Alexander Tcherepnin (1899-1977) was a Russian-born American composer, his musical style represents the modern and diverse features of much twentieth-century piano music. The purpose of this research is to conduct a comprehensive pedagogical analysis of Alexander Tcherepnin's Bagatelles, Op. 5 with the goal of introducing contemporary characteristics in twentieth-century piano music for the late-intermediate student. Chapter 2 contains overall biographical information regarding Alexander Tcherepnin and a discussion of the general compositional style of his piano works. Chapter 3 analyzes the Bagatelles, Op. 5 from the perspective of musical challenges concerning the contemporary characteristics, including contemporary harmony: interval of seconds, non-tertian chords, special use of the seventh chords, and ninth chords; contemporary rhythm and meter: shifted accents, asymmetric meter, meter change, and ostinato; modal melodic resources and tonalities; and other special tonalities. Chapter 4 has suggestions on fingering, pedaling, articulation, tone, dynamics and phrasing, and practicing procedures for individual technical difficulties. Studying the Bagatelles, Op. 5 provides a transition for the student from learning standard repertoire of the eighteenth and the nineteenth century, to contemporary repertoire through the combination of Russian compositional traditions with twentieth century repertory.
Date: May 2019
Creator: Ai, Meilin
Object Type: Thesis or Dissertation
System: The UNT Digital Library

An Investigation of Multiple Articulation as Applied to Saxophone Literature and Its Performance: An Historical and Pedagogical Approach

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Multiple articulation is a technique that is becoming commonplace in the saxophone literature. This study provides a detailed explanation of how produce the technique. Its application to saxophone literature is explored with musical examples and commentary by the author. A compilation of pedagogical viewpoints regarding multiple articulation from educators spanning the last century is provided.
Date: May 2019
Creator: Reséndez, Joey (José Luís)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Invisible Woman: A Study of Black Women in Magazine Beauty Advertisements (open access)

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
Isolation and Bioinformatic Characterization of Four Novel Bacteriophages from Streptomyces toxytricini (open access)

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
Language Learning and the Trumpet: Correlations and Advantages of Utilizing Language Learning Techniques in Trumpet Practice and Instruction (open access)

Language Learning and the Trumpet: Correlations and Advantages of Utilizing Language Learning Techniques in Trumpet Practice and Instruction

The purpose of this document is to examine the effects of learning music similarly to the way humans learn language to answer the following questions: (1) what are the correlations between language learning and music learning? and (2) how can the ideals of language learning be used to maximize the effectiveness of the music learning process? To achieve this, the stages of language acquisition is examined alongside Edwin Gordon's skill learning sequence to draw comparisons between the music and language learning processes. Examined materials include common beginning band method books and trumpet-specific materials. Common problems public school educators face, as well as solutions to those difficulties are addressed. The solutions are concepts inspired by the language learning process that can be utilized to maximize the learning at both the beginning and advanced stages of learning. A beginner level piece ("Lyra" from Trumpet Stars by H.A. Vandercook) and an advanced level piece ("Danse" from Incantation, Threne, and Danse by Alfred Desenclos) are examined thouroughly with these ideals in mind. In order to maximize results of the music learning process, incorporation of language acquisition ideals is necessary not only at the beginning of one's musical journey, but also into the later years …
Date: May 2019
Creator: Lankford, Jacquelyn, 1992-
Object Type: Thesis or Dissertation
System: The UNT Digital Library

The Last Karankawas: Stories

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A collection of interconnected short stories set in diverse corners of Texas, converging on Galveston Island before and after Hurricane Ike.
Date: May 2019
Creator: Garza, Kimberly Rose
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Latin American Fusion: An Analysis of U.S. and Latin American Musical Styles and their Synthesis Exhibited in "The Cape Cod Files" by Paquito D'Rivera (open access)

Latin American Fusion: An Analysis of U.S. and Latin American Musical Styles and their Synthesis Exhibited in "The Cape Cod Files" by Paquito D'Rivera

This document focuses on background and performance practice of various musical styles encountered in Paquito D'Rivera's The Cape Cod Files. More specifically, the musical styles examined include: boogie-woogie, Argentine milonga, classical and popular Cuban music, American twelve-bar blues, contemporary atonal music, and Cuban danzón. A brief biography of Paquito D'Rivera is included to establish context of the composer's musical background. Each chapter examines one of the four movements and the musical styles found within that movement. A brief history of each musical style is provided to inform appropriate performance practice decisions.
Date: May 2019
Creator: Willsie, Lucas
Object Type: Thesis or Dissertation
System: The UNT Digital Library
"Life Holders" (open access)

"Life Holders"

Life Holders is a collection of personal essays reflecting on my interactions with others concerning my military service.
Date: May 2019
Creator: Irvin, William Ross
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Liszt's Portrayal of Goethe's Faust Using Flat 6th Scale Degree as Harmonic Organizing Principle in the Faust Movement from His Faust Symphony (open access)

Liszt's Portrayal of Goethe's Faust Using Flat 6th Scale Degree as Harmonic Organizing Principle in the Faust Movement from His Faust Symphony

Franz Liszt's Faust Symphony has suffered neglect since its premiere in 1857. The analysis in this study aims to clarify some of the misunderstandings which have led to this neglect, particularly concerning Liszt's formal structure and character portrayal. In the Faust movement, the flat 6th scale degree (♭6) plays a prominent role in harmonic organization. Nineteenth-century composers sometimes used the distinct sonic color of chromatic-third progressions, as Liszt does here between C and E rather than diatonic movement by fifth to evoke a distant dream-world state. Liszt's conspicuous and form-defining use of ♭6 in the Faust movement suggests fantasy and mysterious elements ripe for programmatic interpretation. In this dissertation, I will attempt to clarify how Liszt portrayed the character of Faust by using the flat 6th scale degree as a crucial harmonic organizing principle in the Faust movement.
Date: May 2019
Creator: Li, Chao (Conductor)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Looking for Quantitative and Qualitative Measures of Teaching Interactions: A Preliminary Analysis (open access)

Looking for Quantitative and Qualitative Measures of Teaching Interactions: A Preliminary Analysis

Indicators of quality early intensive behavioral intervention (EIBI) include comprehensive interventions, adequately trained staff, high rates of effective instruction delivery, happy interactions between children and their teachers, and socially valid outcomes. When these are in place, high quality EIBI is more likely to increase progress that children with autism make during treatment. When not in place, progress is not as likely, as rapid, or as meaningful. To date, there is limited research regarding the correlation between these indicators of high-quality EIBI and the degree to which their effects are meaningful to direct consumers. The purpose of this methodological study was to compare direct, quantitative measures of teaching interactions (child initiations, teacher initiations, child affect, teacher affect) with qualitative measures (stakeholder ratings of teacher effectiveness, amount of opportunities for interaction and interest in the child) of teaching interactions to determine what sets the occasion for expert stakeholders to describe a teaching interaction as effective, quality therapy.
Date: May 2019
Creator: Weir, Jade R
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Manipulating Fear: The Texas State Government and the Second Red Scare, 1947-1954 (open access)

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
Mesh Networking for Inter-UAV Communications (open access)

Mesh Networking for Inter-UAV Communications

Unmanned aerial systems (UASs) have a great potential to enhanced situational awareness in public safety operations. Many UASs operating in the same airspace can cause mid-air collisions. NASA and the FAA are developing a UAS traffic management (UTM) system, which could be used in public safety operations to manage the UAS airspace. UTM relies on an existing communication backhaul, however natural disasters may disrupt existing communications infrastructure or occur in areas where no backhaul exists. This thesis outlines a robust communications alternative that interfaces a fleet of UASs with a UTM service supplier (USS) over a mesh network. Additionally, this thesis outlines an algorithm for vehicle-to-vehicle discovery and communication over the mesh network.
Date: May 2019
Creator: Walton, Michael Tanner
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Methodical Evaluation of Processing-in-Memory Alternatives (open access)

Methodical Evaluation of Processing-in-Memory Alternatives

In this work, I characterized a series of potential application kernels using a set of architectural and non-architectural metrics, and performed a comparison of four different alternatives for processing-in-memory cores (PIMs): ARM cores, GPGPUs, coarse-grained reconfigurable dataflow (DF-PIM), and a domain specific architecture using SIMD PIM engine consisting of a series of multiply-accumulate circuits (MACs). For each PIM alternative I investigated how performance and energy efficiency changes with respect to a series of system parameters, such as memory bandwidth and latency, number of PIM cores, DVFS states, cache architecture, etc. In addition, I compared the PIM core choices for a subset of applications and discussed how the application characteristics correlate to the achieved performance and energy efficiency. Furthermore, I compared the PIM alternatives to a host-centric solution that uses a traditional server-class CPU core or PIM-like cores acting as host-side accelerators instead of being part of 3D-stacked memories. Such insights can expose the achievable performance limits and shortcomings of certain PIM designs and show sensitivity to a series of system parameters (available memory bandwidth, application latency and bandwidth sensitivity, etc.). In addition, identifying the common application characteristics for PIM kernels provides opportunity to identify similar types of computation patterns in …
Date: May 2019
Creator: Scrbak, Marko
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Modeling Marijuana Use Willingness and Problems as a Function of Social Rejection and Social Anxiety

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Marijuana is the second most commonly used substance in the US. A growing literature suggests that socially anxious individuals use marijuana to manage their symptoms in social situations, which may explain why they are also more likely to experience problems. Unfortunately, the majority of the literature is based on research conducted with adult samples or the co-occurrence of diagnoses in adolescent samples. The proposed study sought to test the link between social anxiety (SA) and proxies for ‘real-time' marijuana use behaviors (i.e., use willingness) as well as use-related problems among adolescents. Participants were 69 adolescents (15-17; 55% female) recruited from the community reporting any lifetime marijuana use. Participants were randomly assigned to a novel social rejection or neutral laboratory task and completed measures of SA, marijuana use frequency, and related problems. Consistent with adult findings, main effects of SA and experimental condition on marijuana use willingness were expected to be qualified by an interaction in which the greatest marijuana use willingness would occur among high SA youth post-rejection (H1), SA would be positively related to marijuana use problems (H2), and among adolescents in the rejection condition, marijuana use willingness would be positively correlated with use problems (H3). Only H2 was …
Date: May 2019
Creator: Cloutier, Renee
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Modern Performance Edition of Nina D'Aubigny Von Engelbrunner's Deutsche, Italienische und Französische Gesänge mit Begleitung des Pianoforte (open access)

A Modern Performance Edition of Nina D'Aubigny Von Engelbrunner's Deutsche, Italienische und Französische Gesänge mit Begleitung des Pianoforte

This dissertation examines the work of German composer and vocal pedagogue Nina d'Aubigny von Engelbrunner through her collection of songs entitled "Deutsche, Italienische und Französische Gesänge mit Begleitung des Pianoforte," published in 1797. A brief overview of the life and works of Ms. d'Aubigny is provided, followed by a discussion about the "woman question" as it relates to Ms. d'Aubigny's works. The second part of this project includes a new, modern performance edition of the collection of songs, complete with general editorial guidelines, notes and translations, and a critical report detailing all deviations from the original 1797 edition.
Date: May 2019
Creator: Scaggs, Leanne
Object Type: Thesis or Dissertation
System: The UNT Digital Library