In this disseration we propose semi-automated top-down policy engineering approaches for attribute-based access control (ABAC) development. Further, we propose a hybrid ABAC policy engineering approach to combine the benefits and address the shortcomings of both top-down and bottom-up approaches. In particular, we propose three frameworks: (i) ABAC attributes extraction, (ii) ABAC constraints extraction, and (iii) hybrid ABAC policy engineering. Attributes extraction framework comprises of five modules that operate together to extract attributes values from natural language access control policies (NLACPs); map the extracted values to attribute keys; and assign each key-value pair to an appropriate entity. For ABAC constraints extraction framework, we design a two-phase process to extract ABAC constraints from NLACPs. The process begins with the identification phase which focuses on identifying the right boundary of constraint expressions. Next is the normalization phase, that aims at extracting the actual elements that pose a constraint. On the other hand, our hybrid ABAC policy engineering framework consists of 5 modules. This framework combines top-down and bottom-up policy engineering techniques to overcome the shortcomings of both approaches and to generate policies that are more intuitive and relevant to actual organization policies. With this, we believe that our work takes essential steps towards …

This dissertation focuses on studying membrane air dehumidification for a membrane moisture exchanger in a membrane heat pump system. The study has two parts: an optimization of membrane moisture exchanger for air dehumidification in the macroscale, and diffusion of water vapor in polymer nanocomposites membrane for humid air dehumidification in the nanoscale. In the first part of the research, the mass transport of water vapor molecules through hydrophilic silica nanochannel chains in hydrophobic polyurethane matrix was studied by simulations and experiments for different membrane moisture exchanger design configurations. The mass transport across the polymer nanocomposite membrane occurs with the diffusion of moist air water vapor molecules in the membrane moisture exchanger in a membrane heat pump air conditioning system for air dehumidification purposes. The hydrophobic polyurethane matrix containing the hydrophilic silica nanochannel chains membrane is responsible for transporting water vapor molecules from the feed side to the permeate side of the membrane without allowing air molecules to pass through.In the second part of the research, diffusion analysis of the polymer nanocomposite membrane were performed in the nanoscale for the polymer nanocomposite membrane. The diffusion phenomena through the polymer, the polymer nanocomposite without modifying the silica surfaces, and the polymer nanocomposite …

This dissertation examines whether managers influence corporate boards of directors in their auditor selection, change, and compensation decisions. This topic is important because it addresses concerns that the Sarbanes-Oxley Act of 2002 (SOX) is not effective in eliminating managerial influence over auditor engagement decisions and that it may provide a false sense of security to investors. These concerns are based on the implicit assumption that managers prefer weaker governance oversight and lower audit quality. However, empirical research testing associations between managerial influence and audit-related decisions post-SOX is scarce and generally guided by agency theory. Incorporating agency, stewardship, and resource dependence perspectives, I find that managerial preferences for auditor selection are not aligned. Specifically, CEOs positively influence the selection of higher quality auditors, whereas CFOs have the opposite effect. Further, CEOs who hold powerful roles as chairs of their companies' boards of directors appear to mitigate the negative influence of CFOs and inside directors on audit quality. CEOs serving in dual roles also oppose auditor turnover when lower earnings quality prompt higher demand for audit effort. Finally, my study provides some evidence that management exercises downward pressures on audit fees, suggesting that managers utilize their authority beyond the regulations established by …

Middle America is dying. The United Nations reports the average number of deaths per 1,00 population in the U.S. has steadily increased an average of 1.2 per 1,000 persons annually since 2015. Existing research offer conflicting theories regarding the factors influencing the phenomenon. the purpose of this study was to examine reliable and valid secondary data to determine if statistical evidence exists to support the prevailing theories. Statistical evidence was observed that suggests the crude death rates among U.S. non-Hispanic white (NHWs) populations was significantly higher than other U.S. population segments between 2015 and 2018. Statistical evidence was also observed that suggests U.S. NHWs sought ambulatory services for alcohol and drug use self-injuries at higher rates than other U.S. population segments. However, the evidence suggest that U.S. NHWs are not more likely to experience earlier than expected deaths from excessive alcohol or drug use than other U.S. population segments. The study's implications are that U.S. policy makers should consider long-term economic development and sustainability strategies focused on the promotion of higher education as a deterrent to self-harm among U.S. residents without college degrees or skills certifications. The study recommends future large-scale quantitative, qualitative, and mixed-use studies that examine the micro, …

Research suggests that non-medical prescription drug (NMPD) use is becoming increasingly prevalent, particularly among adolescents. A critical step towards developing effective intervention efforts requires identifying adolescents who are at risk for NMPD use. An extensive literature suggests that both adolescents and adults with elevated anxiety sensitivity (AS) are at greater risk for problematic substance use, and a small body of work has identified similar links with NMPD use specifically among adults. However, most of this literature combines all prescription drugs into a single category, and no work has evaluated the relation between AS and NMPD use among adolescents. The current study endeavors to further this area of research by examining the relation between AS (overall and subscales) and NMPD use among adolescents. The project evaluated 276 adolescents (age 9-19 years) enrolled in a residential treatment program on level of AS, including sub-dimensions (i.e., cognitive, physical, and social), and NMPD use across three categories of drugs: analgesic (e.g., Vicodin®), anxiolytic (e.g., Xanax®), and stimulant (e.g., Adderall®). A series of logistic regression models indicated that overall AS predicted nonmedical analgesic use, but not anxiolytic/sedative or stimulant use. A closer investigation of the AS subscales demonstrated that only the AS social subscale significantly …

Increased exposure to antibiotics has led to the dissemination of genes conferring resistance to antimicrobial metabolites throughout human microbiomes globally via horizontal gene transfer (HGT). This has resulted in the emergence of new resistant strains leading to a rising epidemic of deaths from previously treatable infections. Evidence suggests that before the age of anthropogenic antibiotic use, microbes living within a community produced antibiotic metabolites and, subsequently, maintained such genes for several useful functions and a balance of diversity in nature. The question of the origin of these resistant genes is difficult to answer, but with continued advancements in ancient genomic analysis, researchers have developed methods of acquiring a more accurate representation of the microbiome associated with our human ancestors by extracting fossilized microbial specimens from dental calculus and directly sequencing the metagenomes. This thesis outlines the production of taxonomic and functional profiles of 20 different human and non-human oral microbiome samples using metagenomics tools originally developed for living individuals, altered for use with ancient microbial specimens. Putative antimicrobial resistant (AMR) genes derived from these profiles were reconstructed and conserved functional regions were identified. From the data that is available regarding the human microbiome from a range of time points throughout …

The purpose of this research is to analyze representations of Queen Elizabeth I of England in nineteenth-century Franco-Italian opera, and the relationship of these representations to contemporaneous singing style and the historical background. The basis for this analysis is three arias: "Quant'é grato all'alma mia" from Elisabetta, regina d'Inghilterra (1815) by Gioachino Rossini (1792-1868), "Sì, vuol di Francia il rege...Ah! quando all'ara scorgemi...Ah! dal ciel discenda un raggio" from Maria Stuarda (1835) by Gaetano Donizetti (1797-1848), and "Malgré l'éclat qui m'environne" from Le songe d'une nuit d'été (1850) by Ambroise Thomas (1811-1896). This research is divided into two main sections: the historical background of Italy and France in the nineteenth century, especially in the contemporaneous vocal style and fashions of literature; and a discussion of the composers' musical and dramatic choices for Queen Elizabeth I in the three selected arias. Chapter 2 is a brief introduction to the early nineteenth-century Franco-Italian historical background, vocal style, and popular literature. Chapter 3 presents an analysis of the three arias. The last chapter summarizes the representations of Elizabeth I in nineteenth-century politics, literature, and vocal style.

The disproportionate number of police-involved shootings reflect the underlying conditions of traditionally conservative, racist policing. Recent updates and communication refinements to police training methodologies could improve training processes, which in turn, may improve societal perceptions of police in the United States. Law enforcement officers in the United States have become the focus of public policy outcry and generalized distrust, further complicating the dangers of contemporary policing. Concealed weapons and the close proximity of civilians policing the police with cellphone cameras complicate issues of officer safety. State and national incidents have resulted in police processes and behaviors being broadcast and violently challenged. In response to these challenges, Texas police academies and law enforcement training agencies are changing the way police learn to police. During the preparation of this study, the Texas Commission on Law Enforcement adopted a legislatively mandated update to the Basic Peace Officer Certification training. After a three-year revision process, in late 2019, the Texas Commission on Law Enforcement replaced the former 643-hour Basic Peace Officer Course with the newest Basic Peace Officer Course #1000696. Through its goals, definitions, and instructional guides, the Course #1000696 could potentially stimulate occupational identity, unify community policing culture, and foster community perception repair.

Muzio Clementi's symphonies were first performed in London between 1786 and 1796. After an extended hiatus from 1796 to 1813, his symphonic works appeared on programs again from 1813 to 1824. Clementi's career as a symphonist corresponds closely with trends in London's concert life. The reception of Clementi's symphonies during his lifetime has frequently been misinterpreted by scholars who oversimplify the use of "science" in musical discourse of the day and fail to consider the positive connotations of this adjective, so frequently applied to Clementi. Musical discourse at the time addressed the science and art of music emphasizing a composition, or its composer's, science, harmony, effects, genius, and the audience's response. Though an unstated ideal, reviews evince a preference for balancing scientific and artistic display. Reviews of Clementi's symphonies suggest he initially struggled to balance the technical and artistic qualities of his compositions but succeeded, according to reviews, in finally doing so in 1796. After his early efforts, Clementi was consistently praised as worthy to stand among the current and most prestigious composers of the continent: Haydn and Mozart initially, and Beethoven and Rossini later.

In Victorian Britain, music circulating libraries libraries operated by music publishers Novello & Co. and Augener & Co. supported upper- and upper-middle-class patrons in their pursuit of cultural capital that would help them perform their socioeconomic status. Studying these libraries in the context of domestic music-making reveals the economic and social impact of these libraries in the lives of amateur musicians and in the music publishing industry. An analysis of the account books in the Novello Business Archives demonstrates that the direct income that Novello & Co., Ltd.'s Universal Circulating Musical Library generated was negligible at best. Yet the fact that the library continued to be part of the business for over forty years indicates that Novello & Co., Ltd. found it to be profitable in some way. In this case, the library could have helped the publisher to attract customers through branding and advertising, in addition to informing publishing decisions by tracking demand. Catalogs for music circulating libraries, as well as for the publishers who owned them, contain lists of library and publisher inventory and pricing. Studying changes in these catalogs reveals how patrons' tastes changed over time. A case study of violin-piano duets in multiple catalogs confirms a …

The new developments in coding theory research have revolutionized the application of coding to practical systems. Low-Density Parity Check (LDPC) codes form a class of Shannon limit approaching codes opted for digital communication systems that require high reliability. This thesis investigates the underlying relationship between the spectral properties of the parity check matrix and LDPC decoding convergence. The bit error rate of an LDPC code is plotted for the parity check matrix that has different Second Smallest Eigenvalue Modulus (SSEM) of its corresponding Laplacian matrix. It is found that for a given (n,k) LDPC code, large SSEM has better error floor performance than low SSEM. The value of SSEM decreases as the sparseness in a parity-check matrix is increased. It was also found from the simulation that long LDPC codes have better error floor performance than short codes. This thesis outlines an approach to analyze LDPC decoding based on the eigenvalue analysis of the corresponding parity check matrix.

The purpose of the study was to examine whether athletic participation as a child and/or adolescent acts as a protective factor for youth who endure childhood maltreatment. After screening for childhood maltreatment, our 269 participants were separated into either an athlete group or a non-athlete group and compared using two one-way multivariate analyses of covariance (MANCOVA). Emotional neglect served as the covariate due to non-athletes' significantly higher emotional neglect scores than athletes. The first MANCOVA compared athletes and non-athletes on positive outcomes, which included measures of post-traumatic growth, three adaptive coping strategies, and self-compassion. In the second MANCOVA, we assessed for differences between athletes and non-athletes on negative outcomes, which included measures of traumatic, depressive, and anxious symptomology and a maladaptive coping strategy. Neither MANCOVA reached significance, rejecting our hypothesis that athletes would be more resilient than non-athletes to the negative impact of childhood maltreatment. Discussion considers possible reasons for the lack of significance, such as the recency of athletic participation or the specific type of maltreatment experienced, as well as limitations and directions for future research.

In the context of health care delivery for senior citizens, this research utilizes three studies that examine the development and implementation of health policy and the factors that can directly or indirectly impact the effective delivery of health services to senior citizens. It utilizes three essays employing mixed methods (qualitative and quantitative) methods including semi structured interviews, multiple regression and partial least squares structural equation modelling to examine the extent to which the implementation of health services delivered attributes of primary and integrated care to seniors. The two essays identified methods, approaches and strategies of integrated care relevant to the development of policy that can be successfully implemented when the contextual issues that older people consider to be important in maintaining their functional capabilities and their motivation to improve health as perceived by them are addressed. Consequent upon the results from these studies, the third essay examines the methodological issues on integrated geriatric care implementation when guidelines for effective policy development identified were not followed. By highlighting the relationship between effective policy and patient satisfaction, these three essays' recommended approach enhances the theory of health design that confirms that theoretical models of primary care must incorporate the system, process and …

Epileptic seizure presents a formidable threat to the life of its sufferers, leaving them unconscious within seconds of its onset. Having a mortality rate that is at least twice that of the general population, it is a true cause for concern which has gained ample attention from various research communities. About 800 million people in the world will have at least one seizure experience in their lifespan. Injuries sustained during a seizure crisis are one of the leading causes of death in epilepsy. These can be prevented by an early detection of seizure accompanied by a timely intervention mechanism. The research presented in this dissertation explores Kriging methods to exploit spatial correlations of electroencephalogram (EEG) Signals from the brain, for fast and accurate seizure detection in the Internet of Medical Things (IoMT) using edge computing paradigms, by modeling the brain as a three-dimensional spatial object, similar to a geographical panorama. This dissertation proposes basic, hierarchical and distributed Kriging models, with a deep neural network (DNN) wrapper in some instances. Experimental results from the models are highly promising for real-time seizure detection, with excellent performance in seizure detection latency and training time, as well as accuracy, sensitivity and specificity which compare …

The modern trombone player can experience a variety of styles on any given day. There is a need for the ability to switch between a plethora of styles ranging from avant-garde pieces to many forms of popular music to masterworks of the symphonic repertoire. It is the responsibility of the musician (performer or educator) to be familiar with all music due to global access via the internet. There is a responsibility to properly perform and respect music as more composers are beginning to blend different styles, genres, idioms, and cultures within the same composition. Daniel Schnyder is a prominent continuation of this style of musical collage that began with composers such as George Rochberg, Luciano Berio, Bernd Alois Zimmermann, and Charles Ives. The goal of this project is to analyze the stylistic saturation of Daniel Schnyder's Worlds Beyond Suite, focusing on performance and stylistic analysis to aid in an informed performance. This project will highlight the flexibility required by modern trombonists to perform with a deeper understanding of music in multiple styles, as the blending, juxtaposing, and superimposition of style is the universal future of music.

Graded Hecke algebras are deformations of skew group algebras which arise from a group acting on a polynomial ring. Over fields of characteristic zero, these deformations have been studied in depth and include both symplectic reflection algebras and rational Cherednik algebras as examples. In Lusztig's graded affine Hecke algebras, the action of the group is deformed, but not the commutativity of the vectors. In Drinfeld's Hecke algebras, the commutativity of the vectors is deformed, but not the action of the group. Lusztig's algebras are all isomorphic to Drinfeld's algebras in the nonmodular setting. We find new deformations in the modular setting, i.e., when the characteristic of the underlying field divides the order of the group. We use Poincare-Birkhoff-Witt conditions to classify these deformations arising from the symmetric group acting on a polynomial ring in arbitrary characteristic, including the modular case.

This research introduces the unique context of immoral inaction—situations in which consumers have the opportunity to engage in virtuous behaviors but opt against doing so. Through five studies I demonstrate that in such contexts, embarrassment—a negatively valenced self-conscious moral emotion evoked by the perception that one's behavior is worthy of judgment by others—interacts with the use of approach-motivated coping strategies to lead consumers to engage in prosocial compensatory behaviors. Though extant literature suggests that marketers seeking to evoke prosocial behaviors should employ communications and promotions framed to elicit consumers' guilt, such studies are based in contexts whereby individuals feel guilty and/or embarrassed because of something they have done, not for something they did not do. This research suggests that that the condition of immoral inaction serves to evoke a contrasting psychological mechanism that reverses these findings, making embarrassment a more effective driver of desired outcomes when marketers seek to promote overcoming past inactions. These findings are discussed in light of their implications for research and application.

In light of incidents and concerns regarding the vulnerability of the global positioning system (GPS), the main purpose of the thesis is to look at alternative systems for radio guidance and to put up a serious study on such alternatives with receive and transmit antenna. There is also the need to design such antennas with multiple frequencies to offer robustness in the unlikely event that such adversarial attacks on the GPS happen. The basis on which such alternative antennas are designed is a slotted microstrip. The characteristics of the slot or slots on the microstrip are analyzed by mapping their exact locations on the patch and then noting the resultant center frequencies, the return losses, and the bandwidth. The activities associated with this also focus on the design, fabrication, validation, and characterization of one or more slotted antennas prototypes. The measurement of the antenna prototypes does confirm several frequencies that coexist to see applications, in aeronautical radionavigation, fixed-mobile radionavigation, and radiolocation. The antennas could also feature in a wide-area augmentation system (WAAS), satellite ground link system (SGLS) as well as in surveillance and precision approach radars. Some variations of the antenna are deployed in the areas of law enforcement, surveillance, …

Five years ago, a massive earthquake and its subsequent aftershocks rocked the core of Nepal. Recovery from these quakes has been a long and difficult process. This thesis will explore findings from a qualitative evaluation of Lumanti Support Group for Shelter, an NGO in Kathmandu, Nepal that implemented a residential reconstruction program in four peri-urban communities in Kathmandu Valley. These findings are a culmination of 26 semi-structured interviews and document analysis. This research highlights the processes of reconstruction and the forms of resistance that occurred through disaster governance.

Photograph of Alayna Eiting's dog, Buster, outside on pavement.

Photograph of a mural depicting George Floyd with a halo over his head. Written adjacent to the mural is "Rest in Peace George Floyd," and the artist tagged the mural with the social media handle @MXMO.

Screenshot of an Instagram post by the UNT Army ROTC advertising virtual information sessions for UNT/TWU ROTC. Post features a photograph of an Army ROTC group as well as information about the sessions including a link to join the sessions' Zoom meeting.

Article discussing key questions and opportunities in the field of Proanthocyanidins (PA) biosynthesis.

The National Museum of the Pacific War presents an oral interview with William Hamilton. Hamilton was born in 1921 in New York. He joined the Navy in April 1942, but finished college before getting a commission later in 1943. He was then sent aboard USS Quincy (CA-71) in December. He was aboard for the invasion of Normandy. Hamilton was still aboard when Quincy transported President Roosevelt to Yalta. He was able to get close enough to FDR to observe the state of his health at the time. He was still aboard during the Okinawa campaign. Hamilton shares several great anecdotes about his experiences aboard the Quincy during and after the war including kamikazes and typhoons.