An Implementation of Consensus Through Bluetooth Communication (open access)

An Implementation of Consensus Through Bluetooth Communication

This thesis provides an implementation of consensus of multi-agent networked systems. Consensus problem is an important issue of distributed computing and has various algorithms and applications in the field of electronical and computer science. The consensus requests all nodes of a network reach an agreement over a certain measurement. An algorithm of convergent consensus problem is implemented through a small network of Bluetooth communication in the thesis. The connections of the Bluetooth devices are wireless, and the device nodes of the network are driven by C++ software and Winsock API. The simulation results show that the implementation completes all the requirements of the distributed consensus algorithm.
Date: May 2014
Creator: Wang, Yinan
System: The UNT Digital Library
Racial/ethnic Differences in Hospital Utilization for Cardiovascular-related Events: Evidence of a Survival and Recovery Advantage for Latinos? (open access)

Racial/ethnic Differences in Hospital Utilization for Cardiovascular-related Events: Evidence of a Survival and Recovery Advantage for Latinos?

Evidence continues to demonstrate that racial/ethnic minority groups experience a disproportionate burden of disease and mortality in cardiovascular-related diseases (CVDs). However, emerging evidence suggests a health advantage for Latinos despite a high risk profile. The current study explored the hospital utilization trends of Latino and non-Latino patients and examined the possibility of an advantage for Latinos within the context of CVD-related events with retrospective data collected over a 12-month period from a local safety-net hospital. Contrary to my hypotheses, there was no advantage for in-hospital mortality, length of stay or re-admission in Latinos compared to non-Latinos; rather, Latinos hospitalized for a CVD-related event had a significantly longer length of stay and had greater odds for re-admission when compared to non-Latinos. Despite data suggesting a general health advantage, Latinos may experience a relative disparity within the context of hospital utilization for CVD-related events. Findings have implications for understanding the hospital utilization trends of Latinos following a CVD-related event and suggest a call for action to advance understanding of Latino cardiovascular health.
Date: May 2014
Creator: García, James J.
System: The UNT Digital Library
Engaging Lives: a Nomadic Inquiry Into the Spatial Assemblages and Ethico-aesthetic Practices of Three Makers (open access)

Engaging Lives: a Nomadic Inquiry Into the Spatial Assemblages and Ethico-aesthetic Practices of Three Makers

This research is a nomadic inquiry into the ethics and aesthetics of three makers’ social and material practices. Deleuze’s concept of the nomad operated in multiple ways throughout the process, which was embedded in performative engagements that produced narratives of becoming. Over four months, I built relationships with three people as I learned about the ethico-aesthetic significance of their daily practices. The process started by interviewing participants in their homes and expanded over time to formal and informal engagements in school, community, and agricultural settings. I used Guattari’s ecosophical approach to consider how subjectivity was produced through spatial assemblages by spending time with participants, discussing material structures and objects, listening to personal histories, and collaboratively developing ideas. Participants included a builder who repurposed a missile base into a private residence and community gathering space, an elementary art teacher who practiced urban homesteading, and a young artist who developed an educational farm. The research considers the affective force of normalized social values, the production of desire by designer capitalism, and the mutation of life from neoliberal policies. Our experiences illuminate the community-building potential of direct encounters and direct exchanges. The project generates ideas for becoming an inquirer in the everyday and …
Date: May 2014
Creator: Coats, Cala R.
System: The UNT Digital Library
Development of High Gain Ultraviolet Photo Detectors Based on Zinc Oxide Nanowires (open access)

Development of High Gain Ultraviolet Photo Detectors Based on Zinc Oxide Nanowires

Semiconductor nanowires acts as an emerging class of materials with great potential for applications in future electronic devices. Small size, large surface to volume ratio and high carrier mobility of nanowires make them potentially useful for electronic applications with high integration density. In this thesis, the focus was on the growth of high quality ZnO nanowires, fabrication of field effect transistors and UV- photodetectros based on them. Intrinsic nanowire parameters such as carrier concentration, field effect mobility and resistivity were measured by configuring nanowires as field effect transistors. The main contribution of this thesis is the development of a high gain UV photodetector. A single ZnO nanowire functioning as a UV photodetector showed promising results with an extremely high spectral responsivity of 120 kA/W at wavelength of 370 nm. This corresponds to high photoconductive gain of 2150. To the best of our knowledge, this is the highest responsivity and gain reported so far, the previous values being responsivity=40 kA/W and gain=450. The enhanced photoconductive behavior is attributed to the presence of surface states that acts as hole traps which increase the life time of photogenerated electrons raising the photocurrent. This work provides the evidence of such solid states and preliminary …
Date: May 2014
Creator: Mallampati, Bhargav
System: The UNT Digital Library
Thermally Stimulated Depolarization Current Evaluation of Molding Compounds (open access)

Thermally Stimulated Depolarization Current Evaluation of Molding Compounds

TSDC (thermally stimulated depolarization current) is one of the most important and popular technique for investigating electret materials. TSDC technique can indicate the magnitude of polarization and depolarization, relaxation time, charge-storage, glass transition, and activation energy. To fully investigate polarization and relaxation for pure epoxy and filled epoxy materials, a TSDC system was built and verified by the research. The article describes the building processes and verification of the TSDC system. TSDC, TSPC, and TWC tests data for epoxy and filled epoxy samples are presented in the article. To compare TSDC technique with other related techniques, DEA (dielectric analysis), DMA (dynamic mechanical analysis), and DSC (differential scanning calorimetry) tests are introduced.
Date: May 2014
Creator: Zhao, Shunli
System: The UNT Digital Library
Exploratory Analysis of Social E-health Behavior (open access)

Exploratory Analysis of Social E-health Behavior

Extant literature has documented well that people seek health information via the internet as patients and consumers. Much less, however, is known about interaction and creation behaviors in the development of new online health information and knowledge. More specifically, generalizable sociodemographic data on who engages in this online health behavior via social media is lacking in the sociological literature. The term “social e-health” is introduced to emphasize the difference between seeking behaviors and interaction and creation behaviors. A 2010 dataset of a large nationally representative and randomly sampled telephone survey made freely available from the Pew Research Center is used to examine social e-health behavior according to respondents’ sociodemographics. The dependent variable of social e-health behavior is measured by 13 survey questions from the survey. Gender, race, ethnicity, age, education, and income are used as independent variables. Logistic regression analysis was used to determine the odds of engagement in social e-health behavior based on the sociodemographic predictors. The social determinants of health and digital divide frameworks are used to help explain why socioeconomic variances exist in social e-health behavior. The findings of the current study suggest that predictable sociodemographic patterns along the dimensions of gender, race, age, education, and income …
Date: May 2014
Creator: Acadia, Spencer
System: The UNT Digital Library
Experiences and Perceptions of Students in Music and Mathematics (open access)

Experiences and Perceptions of Students in Music and Mathematics

Since the time of Pythagoras, philosophers, educators, and researchers have theorized that connections exist between music and mathematics. While there is little doubt that engaging in musical or mathematical activities stimulates brain activity at high levels and that increased student involvement fosters a greater learning environment, several questions remain to determine if musical stimulation actually improves mathematic performance. This study took a qualitative approach that allowed 24 high school students to express their direct experiences with music and mathematics, as well as their perceptions of how the two fields are related. Participants were divided into four equal groups based on school music participation and level of mathematic achievement, as determined by their performance on the Texas Assessment of Knowledge and Skills (TAKS). Students participated in a series of three interviews addressing their experiences in both music and mathematics, and took the Multiple Intelligences Developmental Assessment Scales (MIDAS). TAKS data and MIDAS information were triangulated with interview findings. Using a multiple intelligence lens, this study addressed the following questions: (a) How do students perceive themselves as musicians and mathematicians? (b) What experiences do students have in the fields of music and mathematics? (c) Where do students perceive themselves continuing in the …
Date: May 2014
Creator: Cranmore, Jeff L.
System: The UNT Digital Library
Erich Wolfgang Korngold’s Idea of the “Modern”: Developing Variation in the Piano Concerto in C Sharp, Opus 17 (open access)

Erich Wolfgang Korngold’s Idea of the “Modern”: Developing Variation in the Piano Concerto in C Sharp, Opus 17

This study examines the Piano Concerto in C sharp, Op.17 (1923), by Erich Wolfgang Korngold (1897-1957), in light of developing variation, techniques that transform motivic ideas and create musical continuity in this work. The troublesome reception history of Korngold’s piano concerto derives from its complex musical features, which have created difficulties in understanding and evaluating this piece. Consequently, critics and scholars often label the highly sophisticated yet tonal musical language in this piece a residue of Romanticism from the nineteenth century. In this document, in contrast, examination of motivic development and connections in Korngold’s piano concerto reveals thematic and structural coherence in light of Korngold’s idea of modernity. This study provides a historical and technical survey of developing variation and discusses Korngold’s implementation of these techniques in his early compositions and the piano concerto. By doing so, this study recognizes the progressive aspect in Korngold’s music.
Date: May 2014
Creator: Huang, Shu-Yuan
System: The UNT Digital Library
The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation (open access)

The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation

Our country continues to demand clean renewable energy to meet the growing energy needs of our time. Thus, natural gas, which is 87% by volume of methane, has become a hot topic of discussion because it is a clean burning fuel. However, the transportation of methane is not easy because it is a gas at standard temperature and pressure. The usage of transition metals for the conversion of small organic species like methane into a liquid has been a longstanding practice in stoichiometric chemistry. Nonetheless, the current two-step process takes place at a high temperature and pressure for the conversion of methane and steam to methanol via CO + H2 (syngas). The direct oxidation of methane (CH4) into methanol (CH3OH) via homogeneous catalysis is of interest if the system can operate at standard pressure and a temperature less than 250 C. Methane is an inert gas due to the high C-H bond dissociation energy (BDE) of 105 kcal/mol. This dissertation discusses a series of computational investigations of oxy-insertion pathways to understand the essential chemistry behind the functionalization of methane via the use of homogeneous transition metal catalysis. The methane to methanol (MTM) catalytic cycle is made up of two key …
Date: May 2014
Creator: Prince, Bruce M.
System: The UNT Digital Library
Parental Perceptions of Marketing to Young Children: a Feminist Poststructural Perspective (open access)

Parental Perceptions of Marketing to Young Children: a Feminist Poststructural Perspective

This study examined parental perceptions of marketing to young children using a feminist post-structural theoretical framework to specifically examine the following questions, 1) To what extent are parents aware of the marketing tactics being directed toward young children? 2) How do power/knowledge relations and practices produce parent’s multiple subjectivities as they parent their children in regards to commercial culture? 3) How can early childhood educators adapt pedagogy and practice in order to meet the needs of children growing up within the context of a commercialized childhood? In-depth unstructured interviews revealed that parents within this study tend to view themselves as solely responsible for their children and do not support governmental regulation of the advertising industry. In most cases, the parents in the study empathized with marketers trying to sell their products to children. Furthermore, while participants in this study were concerned about how consumer culture influences children’s subjectivities, they were more concerned about “adult content” than corporate access to children. Many of the parental perceptions uncovered mirror neoliberal discourses including an emphasis on individual responsibility, the belief that government regulation is censorship and the privileging of economic rationale by systematically representing children as sources of profit. This study utilized Deleuzean …
Date: May 2014
Creator: Wolff, Kenya E.
System: The UNT Digital Library
Family Structure and Marijuana Use Among Adolescents (open access)

Family Structure and Marijuana Use Among Adolescents

Family structure as a predictive variable of juvenile delinquency has been studied for the last hundred years. This relationship originated due to societal belief that divorce was detrimental to adolescents. Due to the changing societal roles in the United States, family structure has been changing. More children are growing up in non-intact families, such as single-parent households, households with stepparents, cohabitating families, and households without a parent present. To study the effect family structure has on juvenile delinquency, researchers have utilized social control theory, differential association, self-control theory and general strain theory to conceptualize variables to explain why family structure influences delinquent behavior. A review of previous literature on this topic indicates that living in intact households, which are households with two biological parents who are married, have, on average, the lowest rates of delinquency. This thesis investigates the relationship between family structure and lifetime marijuana use among eighth and tenth grade adolescents in the United States through the use of secondary data analysis of Monitoring the Future Study, 2012. The results provide support for the relationship between family structure and lifetime marijuana use.
Date: May 2014
Creator: Aguilar, Jamie M.
System: The UNT Digital Library
“The Inevitable: Withdrawn” (open access)

“The Inevitable: Withdrawn”

The Inevitable: Withdrawn is a critical preface and collection of non-fiction writing: personal essay, lyric essay, fragments, and experimental forms. The work’s cohesive subject matter is the author’s European vacation directly following her divorce. Within the pieces, the author attempts to reconcile who she is when starting over and she begins to ask questions regarding the human condition: How do I learn to exhibit intimacy again, not just with romantic partners, but with also in a familial way with my father, and how does absence in these relationships affect my journey and how I write about it? How do I view, and remake myself, when finding my identity that was tied to another individual compromised? How does a body, both physical and belonging to me, and physical as text, take certain shapes to reflect my understanding? How do I define truth, and how do I interpret truth and authenticity in both experience and writing? How do I define and know the difference between belief and truth? And finally, how does narrative and language protect, or expose me? The Inevitable: Withdrawn considers debates regarding the definition of narrative in order to address a spectrum of non-fiction writing. The collection takes into …
Date: May 2014
Creator: Christy, Gwendolyn Anne
System: The UNT Digital Library
James Macmillan’s St John Passion: the Role of Celtic Folk Idioms and the Reproaches (open access)

James Macmillan’s St John Passion: the Role of Celtic Folk Idioms and the Reproaches

In 1829, Passion settings entered the secular concert hall with Felix Mendelssohn’s revival of Bach’s St. Matthew Passion in Berlin. The genre has fallen in and out of favor with composers because of the subject matter and Bach’s prominence in the setting. James MacMillan’s St. John Passion has established itself as one of the preeminent modern passion settings by manipulating past idioms such as chant, chorales, and other popular passion conventions in concert with his use of Celtic folk idioms. He creates a passion experience that strives for a spiritually Catholic influence. This approach has earned praise and harsh criticism. MacMillan’s unique use of keening and the drone offers a uniquely Scottish passion that allows for Jesus’ crucifixion to be more poignant to the intended initial audience. In addition to his use of Celtic folk idioms, MacMillan uses added text; most central to this paper is The Reproaches. Movement eight (The Reproaches) is the emotional and musical climax of the work. This inclusion of text has shifted the climax, namely Jesus’s death and burial, to moments before his death. In addition, the value of the work as a liturgical work is lost by the inclusion of these texts, but a …
Date: May 2014
Creator: Frank, Nathan
System: The UNT Digital Library
A Cross-cultural Textual Analysis of Western and South Korean Newspaper Coverage of North Korean Women Defectors and Victims of Human Trafficking (open access)

A Cross-cultural Textual Analysis of Western and South Korean Newspaper Coverage of North Korean Women Defectors and Victims of Human Trafficking

Trafficking women for sexual abuse has been a serious concern worldwide, particularly over the last two decades. The International Labour Organization (ILO) estimated that illicit profits of human trafficking may be as high as $32 billion. However, the international media community has scarcely focused on North Korean women defectors and victims of human trafficking, despite the severity of the issue. More than two million North Koreans, predominantly women, have crossed borders to enter China from starvation. Among those women migrants, about 80% to 90% of them were abducted by traffickers at the border between North Korea and China, and the traffickers sold them to the Chinese sex industry or Chinese men who are unable to find a woman as a wife or a sex slave.This cross-cultural textual analysis examined South Korean and Western (U.S. and British) newspaper coverage of North Korean women as victims of human trafficking to discover similarities and differences in those countries’ news frames. The analysis has shown that politics was a crucial factor in the coverage of the issue. However, by generally failing to report on the fundamental causes of the trafficking, such as inequality between genders, both Western and South Korean newspapers perpetuated hegemonic masculinity …
Date: May 2014
Creator: Chong, Miyoung
System: The UNT Digital Library
The Intimacy of Death: Mahler’s Dramatic Narration in Kindertotenlieder (open access)

The Intimacy of Death: Mahler’s Dramatic Narration in Kindertotenlieder

There has been relatively little scholarship to date on Mahler’s Kindertotenlieder. The writings about this song cycle that do exist primarily focus on the disparate nature of the poems and justify Kindertotenlieder as a cycle by highlighting various musical connections between the songs, such as keys and motivic continuity. Mahler, however, has unified the cycle in a much more complex and sophisticated way. His familiarity with Wagner’s music and methods, and his mastery of the human voice and orchestral voices allowed him to weave a dramatic grief-laden narrative.
Date: May 2014
Creator: Strange, AnnaGrace
System: The UNT Digital Library
Form and Pianistic Texture in the Operatic Fantasies Based on La Sonnambula and Der Freischütz of Franz Liszt and Julian Fontana: a Comparison of Compositional Approach (open access)

Form and Pianistic Texture in the Operatic Fantasies Based on La Sonnambula and Der Freischütz of Franz Liszt and Julian Fontana: a Comparison of Compositional Approach

This study examines and identifies the differences in compositional approach in the operatic fantasies based on Bellini’s La Sonnambula and Weber’s Der Freischütz by Franz Liszt and Julian Fontana. These four fantasies are placed in the context of musical conventions and audiences in the first half of the nineteenth century. The two operatic fantasies by Liszt that are included in this study are representative of reinterpretations that employ formal and textural features suitable for the concert repertoire of piano virtuosos. In contrast, the fantasies by Fontana are indicative of the potpourri style, and suitable both for amateur performance as well as for pedagogical use. The different functions and purposes of the operatic fantasies of Liszt and Fontana are compared and contrasted, with attention to each composer’s respective intended audiences as well as their distinct compositional intentions.
Date: May 2014
Creator: Chung, Migeun
System: The UNT Digital Library
The Impact of Teacher Quality on Reading Achievement of Fourth Grade Students: an Analysis of the 2007, 2009, 2011, and 2013 National Assessment of Educational Progress (Naep) (open access)

The Impact of Teacher Quality on Reading Achievement of Fourth Grade Students: an Analysis of the 2007, 2009, 2011, and 2013 National Assessment of Educational Progress (Naep)

This study investigated the effects of teacher background variables on fourth grade reading achievement data collected from the 2007, 2009, 2011, and 2013 National Assessment of Educational Progress (NAEP) using a causal-comparative research design. Teacher quality variables related to teacher credentials, instructional methods, training, and support were selected from the NAEP background questionnaire. Descriptive and inferential statistical analyses were used to examine teacher background information and fourth grade reading NAEP scaled scores using measures of central tendency, independent t-tests, analysis of variance, and Tukey’s HSD post hoc analysis. Findings suggest that certain teacher quality variables positively impact fourth grade reading achievement. Significant differences existed among fourth grade reading scaled scores for the following variables: teaching credentials [region (p < .05), traditional preparation route (p < .001), highest degree earned(p < .05), years of experience (p < .001)]; instructional methods [reading aloud by students (p < .01), questioning character motives (p < .01), student selection of reading materials (p < .001), explaining/supporting text (p < .05), identifying main theme (p < .001), time spent on reading (p < .001), primary language arts integration (p < .05)]; teacher support [instructional grade level support/technical assistance by reading specialist (p < .05) and mentoring …
Date: May 2014
Creator: Curry, Daphney Leann
System: The UNT Digital Library
Effects of Vegetation Structure and Canopy Exposure on Small-scale Variation in Atmospheric Deposition Inputs to a Mixed Conifer Forest in California (open access)

Effects of Vegetation Structure and Canopy Exposure on Small-scale Variation in Atmospheric Deposition Inputs to a Mixed Conifer Forest in California

Data on rates of atmospheric deposition is limited in many montane ecosystems, where high spatial variability in meteorological, topographic, and vegetation factors contributes to elevated atmospheric inputs and to the creation of deposition hotspots. Addressing the ecological consequences of increasing deposition in these areas will require a better understanding of surface controls influencing atmospheric deposition rates at both large and small-scales. The overarching objective of this thesis research was to understand the influence of vegetation structure and canopy exposure on small-scale patterns of atmospheric sulfate, nitrate, and chloride deposition inputs to a conifer forest in the Santa Cruz Mountains, California. Throughfall ion fluxes (i.e., ions delivered in water that pass from the forest canopy to the forest floor), bulk deposition (i.e., primarily wet deposition), and rainfall data were collected during the rainy period from October 2012 to May 2013. Throughfall SO42-, Cl-, and NO3- fluxes were measured beneath eight clusters of Douglas fir (Pseudotsuga menziesii) trees (three trees per cluster) differing in tree size (i.e., diameter at breast height; DBH) and canopy exposure. In each cluster, a throughfall collector was placed 1-meter from the bole of an individual tree, for a total of 24 individual collectors. The position of each …
Date: May 2014
Creator: Griffith, Kereen
System: The UNT Digital Library
The Success Factors of African American Males in Master of Arts Teaching Programs (open access)

The Success Factors of African American Males in Master of Arts Teaching Programs

The problem of not enough African American males enrolling in masters level teaching programs was addressed in this study. This phenomenological study examined the experiences of African American males in master of arts teaching (MAT) programs to understand why they enrolled and what factors led to persistence throughout their program enrollment. Six African American males currently enrolled in MAT programs in the southern, southwestern, and western regions of the United States participated. Data gathered for each participant included an individual, semi-structured interview and a demographic survey. Audio-recordings were used to capture the fullness of the interviews, and transcription software was used to code, analyze, and sort the data to help identify themes. This study looked through the lens of Strayhorn’s graduate student persistence and Albert Bandura’s self-efficacy theories. Factors that influenced African American males to enroll into a program were (a) education as a necessary credential, (b) desire to give back to society, (c) minority scholarship support, (d) making a connection to passion, and (e) desire to enhance teaching skills. External and internal factors were identified as assisting the males to persist within their programs. Academic institutions and policy makers may find the results useful for understanding the unseen educational …
Date: May 2014
Creator: Smith, Dantrayl
System: The UNT Digital Library
Texas Principals’ Data Use: Its Relationship to Leadership Style and Student Achievement (open access)

Texas Principals’ Data Use: Its Relationship to Leadership Style and Student Achievement

This study applies an empirical research method determine whether Texas public school principals’ leadership styles, coupled with their use of real time data in a data warehouse, influenced their leadership ability as measured by student achievement. In today’s world of data rich environments that require campuses and districts to make data-driven decisions, principals find themselves having to organize and categorize data to help their school boards, campuses, and citizenry make informed decisions. Most school principals in Texas have access to data in multiple forms including national and state resources and a multitude of other data reports. A random sample of principals was selected to take the Multi Factor Leadership Questionnaire (MLQ5x) and the Principals Data Use Survey. The MLQ5x measured principals’ leadership styles as transformational, transactional, or passive avoidant. The Principals Data Use Survey measured how principals use data to inform campus decisions on student achievement, shaping the vision of the campus, and designing professional development. Data obtained from the survey were correlated to determine the relationship between principals’ use of data warehouses and their leadership styles on student achievement as measured by the Texas Assessment of Knowledge and Skills. The results yielded significant relationships between student achievement, principals’ leadership …
Date: May 2014
Creator: Bostic, Robert E.
System: The UNT Digital Library
Source Apportionment Analysis of Measured Volatile Organic Compounds in Corpus Christi, Texas (open access)

Source Apportionment Analysis of Measured Volatile Organic Compounds in Corpus Christi, Texas

Corpus Christi among of the largest industrialized coastal urban areas in Texas. The strategic location of the city along the Gulf of Mexico allows for many important industries and an international business to be located. The cluster of industries and businesses in the region contribute to the air pollution from emissions that are harmful to the environment and to the people living in and visiting the area. Volatile organic compounds (VOC) constitute an important class of pollutants measured in the area. The automated gas chromatography (Auto GC) data was collected from Texas Commission of Environmental Quality (TCEQ) and source apportionment analysis was conducted on this data to identify key sources of VOC affecting this study region. EPA PMF 3.0 was employed in this sources apportionment study of measured VOC concentration during 2005 - 2012 in Corpus Christi, Texas. The study identified nine optimal factors (Source) that could explain the concentration of VOC at two urbane monitoring sites in the study region. Natural gas was found to be the largest contributor of VOC in the area, followed by gasoline and vehicular exhaust. Diesel was the third highest contributor with emissions from manufacturing and combustion processes. Refineries gases and evaporative fugitive emissions …
Date: May 2014
Creator: Abood, Ahmed T.
System: The UNT Digital Library
Daily-collected Sleep Diaries Compared to Weekly-collected Sleep Diaries Via Actigraph Concordance (open access)

Daily-collected Sleep Diaries Compared to Weekly-collected Sleep Diaries Via Actigraph Concordance

Both sleep diaries and actigraphy have been recommended to assess sleep in research and clinical settings. Investigators have traditionally used sleep diaries that were completed daily by participants and collected weekly but have recently begun using sleep diaries that are both completed and collected daily. No research had previously assessed the agreement between daily-collected sleep diaries and actigraph data over one week. Undergraduate students were randomly assigned to use daily- or weekly-collected sleep diaries. Sleep parameters obtained from these measures were compared to each other via concordance with concurrent actigraph data. It was hypothesized that daily-collected sleep diaries would have greater concordance with actigraphy than weekly-collected sleep diaries. Results indicated that daily-collected sleep diaries provided more reliable data than weekly-collected sleep diaries, but the differences were not statistically significant. Additional aims examined self-reported sleep diary adherence, the participation day number, and day of the week. There were trends for the Daily group to have better adherence. Overall concordance did not change based on the day number or day of the week. Both sleep diaries yield comparable sleep parameter data, suggesting that clinicians and researchers can use either method to estimate sleep parameters.
Date: May 2014
Creator: Francetich, Jade M.
System: The UNT Digital Library
Physiological and Psychological Effects of an Acute Stressor: Comparing Coping Strategies Among Very Physically Active and Less Active Adults (open access)

Physiological and Psychological Effects of an Acute Stressor: Comparing Coping Strategies Among Very Physically Active and Less Active Adults

The purpose of this study was to examine whether physical activity status of healthy adult males (N = 59) while in a coping strategy condition (association, disassociation, or control) influences psychophysiological responses to an acute painful stimulus. Measures of pain tolerance, state anxiety, body awareness, and salivary cortisol were investigated. Results indicated no significant differences between physical activity groups for pain tolerance, stress responses (i.e., self-reported state anxiety and cortisol levels), or body awareness. Though, those who indicated using a disassociation coping technique during the exit interview tolerated the acute, surface pain longer. More research is required to further understand the effects of physical activity and coping strategies on pain perception and psychophysiological responses.
Date: May 2014
Creator: Brandt, Grace A.
System: The UNT Digital Library
Underground Men: Alternative Masculinities and the Politics of Performance in African American Literature and Culture (open access)

Underground Men: Alternative Masculinities and the Politics of Performance in African American Literature and Culture

This study explores intersections between performance, race and masculinity within a variety of expressive cultural contexts during and after the African American Civil Rights Movement. I maintain that the work of James Baldwin is best situated to help us navigate this cross section, as his fiction and cultural criticism focus heavily on the stage in all its incarnations as a space for negotiating the possibilities and limits of expressive culture in combating harmful racial narratives imposed upon black men in America. My thesis begins with a close reading of the performers populating his story collection Going to Meet the Man (1965) before broadening my scope in the following chapters to include analyses of the diametric masculinities in the world of professional boxing and the black roots of the American punk movement. Engaging with theorists like Judith Butler, bell hooks and Paul Gilroy, Underground Men attempts to put these seemingly disparate corners of American life into a dynamic conversation that broadens our understanding through a novel application of critical race, gender and performance theories. Baldwin and his orbiting criticism remain the hub of my investigation throughout, and I use his template of black genius performance outlined in works like Tell Me …
Date: May 2014
Creator: Gray, Jezy J.
System: The UNT Digital Library