Access
Partner
Collection
Serial/Series Title
Degree Department
Libraries
63
Digital Projects Unit
55
Department of Psychology
45
UNT Libraries
29
Department of Biological Sciences
26
Department of Teacher Education and Administration
24
Department of Computer Science and Engineering
22
Department of Counseling and Higher Education
22
Department of Chemistry
21
Department of Instrumental Studies
21
66 More
Degree Discipline
Degree Level
Country
States
Year
Month
Language
1,193 Matching Results
Results open in a new window/tab.
Academic, Social and Emotional Functioning of College Students with Attention-Deficit/Hyperactivity Disorder (ADHD)
Attention deficit/hyperactivity disorder (ADHD) is frequently associated with negative occupational, social and psychological outcomes among community samples of adults; as such, it is expected that college students with ADHD face similar struggles. The research targeting this group of individuals, however, is sparse and tempered by significant limitations. The current study aimed to address methodological limitations in the current literature by including instruments to formally diagnosis ADHD and comorbid disorders, utilizing psychometrically sound instruments and comparing functioning of college students with ADHD across gender and subtype. It was hypothesized that participants with ADHD would report lower GPAs, higher levels of emotional distress and negative relationship characteristics than participants without ADHD. It was also hypothesized that participants with ADHD-combined type (ADHD-C) would report higher levels of substance and alcohol use than participants with ADHD-predominately inattentive type (ADHD-I), and that participants with ADHD-I would report higher levels of anxiety and depression than participants with ADHD-C. Women diagnosed with ADHD were expected to report higher levels of anxiety and depression than men diagnosed with ADHD; whereas, men diagnosed with ADHD were expected to report higher levels of substance and alcohol use than women. MANOVA, ANOVA and Mann-Whitney U tests were conducted to test hypotheses. …
Date:
August 2015
Creator:
McKelvy, Tara N.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Readiness of Indonesian Academic Libraries for Open Access and Open Access Repositories Implementation: a Study on Indonesian Open Access Repositories Registered in OpenDOAR
Scholarly and scientific communication has a long history, while the Open Access (OA) movement began to take part in this communication with the emergence of Internet in the late 1960s and the web that emerged in mid-1990s. OA is beneficial for sharing knowledge because the OA movement demands scholarly literature freely available on the internet and it is free of most licensing restriction copyright. OA will close the barrier of access to knowledge. The OA movement in Indonesia may be considered slow. So far, only 33 academic libraries have registered their repositories with OpenDOAR, which is still small compared to the total number of HE institutions in Indonesia. Those 33 OARs vary in the stages of development. Some have already had large size of contents, while others are still developing. Using Weiner’s theory of organizational readiness for change, this mixed method investigates the readiness of academic librarians for Open Access Repository implementation. The results show that academic librarians in Indonesia are somewhat familiar with OA and OAR. However, their understanding of OA is still limited to the technical nature of it. They also know the benefits of OA in relation to scholarly communication and are ready to implement OAR, but …
Date:
August 2015
Creator:
Priyanto, Ida F.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Supporting Mathematics Understanding Through Funds of Knowledge
Parents are often criticized for the types of roles they play in their children’s education. Rather than assuming parents do not contribute to their children’s learning, this study identified the various ways Hispanic parents support mathematics learning in the home. Using a funds of knowledge lens, the history, practices, and experiences of families that contributed to their children’s mathematics understanding was explored. The purpose of this study was to identify the unique funds of knowledge among three Hispanic families living in the same city, specifically, how parents supported their children’s mathematics learning through funds of knowledge. Five Hispanic parents from three households participated in a series of three home interviews. The semi--‐structured interviews addressed family, school, and educational history of the parents, routines of the household, and perceived roles parents played in their children’s mathematics learning. Participants contributed to their children’s mathematics learning through various funds of knowledge including time management, music, sports, construction, shopping, and cooking. Participating parents shared knowledge with their children through questioning and discussion, providing experiences, and promoting practice. In this study, participants valued education and supported their children’s mathematics learning at home and school activities. This study contributes to the existing funds of knowledge research …
Date:
August 2015
Creator:
Williams, Julie J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Synthesis of Gold Complexes From Diphosphine Ligands and Screening Reactions of Heterocyclic Acetylacetonato (ACAC) Ligands with Transitional Metal Complexes
Syntheses of diphosphine gold (I) complexes from gold THT and two ligands, 4, 5-bis (diphenylphosphino)-4-cyclopenten-1, 3-dione (BPCD) and 2,3-bis(diphenylphosphino)-N-phenylmaleimide (BPPM), were done separately. The reactions happened under ice conditions followed by room temperature conditions and produced two diphosphine gold (I) complexes in moderated yield. Spectroscopic results including nuclear magnetic resonance (NMR) and X-ray crystallography were used to study and determine the structures of the products formed. Moreover, X-rays of all newly synthesized diphosphine gold (I) complexes were compared with the known X-ray structures of other phosphine and diphosphine gold (I) complexes. There were direct resemblances in terms of bond length and angle between these new diphosphine gold (I) complex structures and those already published. For instance, the bond lengths and angles from the newly prepared diphosphine gold (I) complexes were similar to those already published. Where there were some deviations in bond angles and length between the newly synthesized structures and those already published, appropriate explanation was given to explain the deviation. Heterocyclic ligands bearing acetylacetonate (ACAC) side arm(s) were prepared from ethyl malonyl chloride and the heterocyclic compounds 8-hydroxylquinoline, Syn-2-peridoxyaldoxime, quinoxalinol and 2, 6-dipyridinylmethanol. The products (heterocyclic ACAC ligands) from these reactions were screened with transition metal carbonyl compounds …
Date:
August 2015
Creator:
Nyamwihura, Rogers
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Therapist (Dis)Continuity, Therapeutic Relationship, and (Premature) Termination in a Psychology Training Clinic
Premature termination is a substantial problem with significant adverse effects for clients, therapists, and treatment organizations. Unfortunately, it is also a relatively common phenomenon within mental healthcare settings. Across varied mental healthcare settings, rates of premature termination have reportedly ranged from 19.7 % to 40 %. Perhaps not surprisingly, the rate of premature termination in training clinics is substantially higher than in community mental health settings and private practice, with 75 to 80 % of clients ending treatment services prematurely. The purpose of this study was to explore the combined effect of intake therapist continuity or discontinuity, and quality of the therapeutic relationship on premature termination. Intake therapist continuity, measures of working alliance, and termination outcome from 524 clients at the University of North Texas Psychology Clinic were utilized for adults receiving individual therapy services between August 2008 and August 2013. Results of the study suggest intake therapist continuity did not predict subjective termination status (X2(2, n = 524) = 1.61, p = 0.45), nor did it predict change in symptomology status (X2(3, n = 453) = 1.14, p = 0.77). Additionally, working alliance predicted subjective termination status (X2(6, n = 212) = 21.17, p < 0.01), but not change …
Date:
August 2015
Creator:
Al-Jabari, Rawya M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Three Essays on Social Media: the Effect of Motivation, Participation, and Sentiment on Performance
In recent years, social media has experienced tremendous growth in the number of users. Facebook alone has more than 1.3 billion active users and Twitter has attracted over 600 million active users. Social media has significantly changed the way humans communicate. Many people use social media to keep in touch with family and friends and receive up-to-date information about what happens around the world. Politicians are using social media to support their campaigns. Use of social media is not restricted to individuals and politicians. Businesses are now using social media to promote their products and services. Many companies maintain Facebook and Twitter accounts to keep in touch with their customers. Consumers also use social media to receive information about products/services. Online product reviews are now an important source of information for consumers. This dissertation aims to address one fundamental research question: how do individual differences among users lead to different levels of performance on social media? More specifically, this dissertation investigates the motivations of use and the predictors of performance in the context of social media. We utilize sentiment mining to predict performance in different types of social media including information diffusion in Twitter and helpfulness and readership of online …
Date:
August 2015
Creator:
Salehan, Mohammad
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Establishing a History and Trajectory of LGBT and Queer Studies Programs in the American Research University: Context for Advancing Academic Diversity and Social Transformation
The system of higher education in the United States of America has retained some of its original character yet it has also grown in many ways. Among the contemporary priorities of colleges and universities are undergraduate student learning outcomes and success along with a growing focus on diversity. As a result, there has been a growing focus on ways to achieve compositional diversity and a greater sense of inclusion with meaningful advances through better access and resources for individuals from non-dominant populations. The clearest result of these advances for sexual and gender diversity has been a normalization of lesbian, gay, bisexual, transgender, and queer (LGBTQ) identities through positive visibility and greater acceptance on campus. However, it appears that relatively few institutions have focused on improving academic diversity and students’ cognitive growth around LGBTQ issues. Through historical inquiry and a qualitative approach, this study explored the fundamental aspects of formal LGBTQ studies academic programs at some of the leading American research universities, including Cornell University, the University of Maryland, College Park, and the University of Texas at Austin – a purposeful sample chosen from the Association of American Universities (AAU) member institutions with organized curricula focused on the study of sexual …
Date:
August 2015
Creator:
Kessler, M. David
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Saving Face: A Cross-Cultural Investigation of Retail Patronage in Consumers' Skincare Purchase Decisions
The skincare sector is among the fastest growing consumer branded products, boasting unprecedented growth rates in emerging markets, as well as steady growth in developed and post-developed markets. Yet, a more relevant question to marketers of branded skincare products is what factors influence consumers’ decisions about where to buy such products, and whether or not to spread positive word-of-mouth (WOM) about products and store preferences. Sirgy’s (1982, 1985) self-congruence theory postulates that the greater the match between a consumer’s self-image and the image of a retailer’s typical patron, the greater the likelihood that the consumer will prefer and patronize that retailer. However, a review of the literature on self-image congruence shows a lack of consensus with respect to: 1) the effect of self-image congruence on retail patronage, and 2) the relative strength of the four dimensions (i.e., actual/ideal self- and social/ideal social self-image) of self-image congruence on consumer preferences and choices (e.g., Ibrahim & Najjar, 2008; Kang, Tang, Lee, & Bosselma, 2012). Further, Sirgy, Grewal, and Mangleburg (2000) suggested that the more a consumer matches a retailer’s store attributes with those of an ideal store, the more likely the consumer will prefer and patronize the retailer. Thus, an integrative model …
Date:
August 2015
Creator:
Dai, Bo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Does Device Matter? Understanding How User, Device, and Usage Characteristics Influence Risky IT Behaviors of Individuals
Over the past few years, there has been a skyrocketing growth in the use of mobile devices. Mobile devices are ushering in a new era of multi-platform media and a new paradigm of “being-always-connected”. The proliferation of mobile devices, the dramatic growth of cloud computing services, the availability of high-speed mobile internet, and the increase in the functionalities and network connectivity of mobile devices, have led to creation of a phenomenon called BYOD (Bring Your Own Device), which allows employees to connect their personal devices to corporate networks. BYOD is identified as one of the top ten technology trends in 2014 that can multiply the size of mobile workforce in organizations. However, it can also serve as a vehicle that transfers cyber security threats associated with personal mobile devices to the organizations. As BYOD opens the floodgates of various device types and platforms into organizations, identifying different sources of cyber security threats becomes indispensable. So far, there are no studies that investigated how user, device and usage characteristics affect individuals’ protective and risky IT behaviors. The goal of this dissertation is to expand the current literature in IS security by accounting for the roles of user, device, and usage characteristics …
Date:
August 2015
Creator:
Negahban, Arash
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Attachment Theory Within Clinical Supervision: Application of the Conceptual to the Empirical
Attachment theory has established itself as applicable to many types of relationships, encompassing caregiver-child, romantic, interpersonal, and psychotherapeutic interactions. This project sought to investigate the application of attachment theory to clinical supervision. Using suggestions put forth in previous work by Watkins and Riggs, this study examined the dyadic interactions inherent in both supervision and attachment. Using the working alliance as determination of the quality of supervision, attachment styles, leader-follower attachment, and attachment-based expectations were explored as predictors for supervisor-trainee dyad outcome in a training clinic for doctoral psychology students. The study design is longitudinal and prospective. Findings indicate the necessity of measurement of supervisory-specific attachment rather than general attachment, the stability of working alliance over time, and the large contribution of the leader-member attachment framework to the understanding of supervisory attachment. Implications include the importance of maintaining hierarchical, evaluative boundaries within supervisory relationship, consistent with a leader-follower dynamic.
Date:
August 2015
Creator:
Wrape, Elizabeth R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Metabolism and Action of Polyunsaturated N-acylethanolamines in Arabidopsis thaliana Seedlings
The lipoxygenase (LOX) pathway plays an important role in the oxidative metabolism of polyunsaturated N-acylethanolamines (PU-NAEs). The LOX pathway functions in conjugation with hydrolysis by fatty acid amide hydrolase (FAAH) and to produce oxidized NAEs during seed germination and early seedling development. When Arabidopsis seedlings were grown in low micromolar concentrations of lauroylethanolamide (NAE 12:0), growth retardation and elevated endogenous PU-NAE levels were observed due to the competitive inhibition of LOX by NAE 12:0. The elevated levels of endogenous PU-NAEs were more pronounced in genotypes with reduced NAE hydrolase capacity (faah knockouts), and less evident with overexpression of FAAH. Alterations in PU-NAE metabolism were studied in seedlings of various lox and FAAH mutants. The partitioning of PU-NAEs into oxylipin metabolites was exaggerated in the presence of exogenous linolenoylethanolamide (NAE18:3) and resulted in bleaching of cotyledons. The bleaching phenotype was restricted to a narrow developmental window (3-to-5 days after sowing), and was attributed to a reversible disruption of thylakoid membranes in chloroplasts. Biochemical and genetic evidence suggested that 9-hydro(pero)xy and 13-hydro(pero)xy octadecatrienoylethanolamides (9- and 13-NAE-H(P)OT), but not their corresponding hydro(pero)xy free fatty acids, induced cotyledon bleaching. The LOX-mediated metabolites of NAE18:3 shared some overlapping effects on seedling development with those of …
Date:
August 2015
Creator:
Keereetaweep, Jantana
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Macrophyte Functional Diversity on Taxonomic and Functional Diversity and Stability of Tropical Floodplain Fish Assemblages
Multiple dimensions of biodiversity within and across producer and consumer guilds in the food web affect an ecosystem’s functionality and stability. Tropical and subtropical aquatic ecosystems, which are extremely diverse, have received much less attention than terrestrial ecosystems in regards to the effects of biodiversity on ecosystem functioning. We conducted a field experiment that tested for effects of macrophyte functional diversity on diversity and stability of associated fish assemblages in floodplain lakes of the Upper Paraná River floodplain, Brazil. Three levels of macrophyte functional diversity were maintained through time in five floodplain lakes and response variables included various components of fish taxonomic and functional diversity and stability. Components of functional diversity of fish assemblages were quantified using a suite of ecomorphological traits that relate to foraging and habitat use. Response variables primarily distinguished macrophyte treatments from the control. Macrophyte treatments had, on average, double the number of species and total abundance than the control treatment, but only limited effects on stability. The high diversity treatment was essentially nested within the low diversity for assemblage structure and had similar or even slightly lower levels of species richness and abundance in most cases. Gymnotiformes and young-of-year were diverse and relatively abundant in …
Date:
August 2015
Creator:
Treviño, Jessica Marie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Predictors of the Relationship Between Childhood Maltreatment and Career Decision Self-efficacy Among Undergraduate Students
Vocational disruption for survivors of interpersonal trauma has been noted by both practitioners and researchers. While limited empirical support exists, a firm theoretical framework and a full range of outcomes have not been explored. Guided by the framework of social cognitive career theory (SCCT), a promising framework recommended in the previous literature, the aim of the current study was to explore the function of contextual barriers and supports as predictors of career decision self-efficacy (CDSE). Due to the lack of consistency in previous research and absent theoretical specification of the particular mode of intervening variables, both mediation and moderation were explored using multiple regression. The results indicate the relationship between background factors (i.e., childhood maltreatment) and CDSE was fully mediated by an indirect pathway via personal factors (i.e., trauma-related symptoms) and learning experiences (i.e., anxious and avoidant attachment with a career-related mentor) in the prediction of CDSE. The results also indicate that personal factors (i.e., trauma-related symptoms) function as a moderator between background factors (i.e., childhood maltreatment) and learning experiences as anxious attachment with a career-related mentor. Finally, learning experiences as anxious attachment with a career-related mentor moderated the relationship between personal factors (i.e., trauma-related symptoms) and CDSE. Overall, within …
Date:
August 2015
Creator:
MacIntire, Mae M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computational Methods for Vulnerability Analysis and Resource Allocation in Public Health Emergencies
POD (Point of Dispensing)-based emergency response plans involving mass prophylaxis may seem feasible when considering the choice of dispensing points within a region, overall population density, and estimated traffic demands. However, the plan may fail to serve particular vulnerable sub-populations, resulting in access disparities during emergency response. Federal authorities emphasize on the need to identify sub-populations that cannot avail regular services during an emergency due to their special needs to ensure effective response. Vulnerable individuals require the targeted allocation of appropriate resources to serve their special needs. Devising schemes to address the needs of vulnerable sub-populations is essential for the effectiveness of response plans. This research focuses on data-driven computational methods to quantify and address vulnerabilities in response plans that require the allocation of targeted resources. Data-driven methods to identify and quantify vulnerabilities in response plans are developed as part of this research. Addressing vulnerabilities requires the targeted allocation of appropriate resources to PODs. The problem of resource allocation to PODs during public health emergencies is introduced and the variants of the resource allocation problem such as the spatial allocation, spatio-temporal allocation and optimal resource subset variants are formulated. Generating optimal resource allocation and scheduling solutions can be computationally hard …
Date:
August 2015
Creator:
Indrakanti, Saratchandra
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Improving Scientific Learning and Supporting Civic Engagement for Undergraduate Non-science Majors
In prior research focusing on teaching and learning science, a definitive trend toward a new approach for undergraduate non-major science courses has emerged. Instruction should be refocused from information-transfer to giving students experiences that allow them to explore and engage in their new knowledge and find ways to integrate it into their everyday lives. One technique is to focus class material on real issues of interest and relevance. Course development that allows for civic engagement and self discovery connects learning to the lives of students and their communities. This study used a quasi-experimental design to see if students who engaged in their learning had improved learning gains, increased motivation, and ability to relate it to their lives. The results showed that students were more motivated to connect the subject to their lives when they engaged through civic engagement projects. Techniques used in this research can be used in the future to develop science courses that focus on the needs of 21st century learners.
Date:
August 2015
Creator:
Taylor, Alana Presley
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Parent Partnership: Towards a Constructional Approach to Improving the Life of Parents with Children with Autism
Parents with children diagnosed with autism face a variety of stressors. The typical approach to dealing with these stressors is pathological which focuses on the problem by attempting to eliminate or alleviate the stressors through counseling, behavioral therapy, tutoring, and/or drugs. The purpose of the current study was to assess an alternative approach, a constructional one, which focuses on solutions by teaching 3 parents to analyze their life, formulate goals, and develop programs to reach their goals building off of their strengths and assets. The by-product is the reduction or elimination of the stressors. The results suggest that the use of a constructional program is very effective in helping parents develop a new repertoire that will ultimately improve their overall quality of life.
Date:
August 2015
Creator:
Liden, Timothy Allen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sleep in Early Adolescence: an Examination of Bedtime Behaviors, Nighttime Sleep Environment, and Parent-set Bedtimes Among a Racially/ethnically Diverse Sample
Early adolescence (e.g., 10-14 years old) is a time during which health habits and behaviors first develop that carry over into adulthood. This age range is also a time when changes are often first observed in typical sleep patterns, such as a delay in bedtimes, decreased total sleep times, and increased sleep problems. Electronic media and social networking have become essential to adolescent interpersonal communication and are negatively associated with adolescent sleep. Room and/or bed sharing practices and having a parent-set bedtime are still common in this age range, though no study has examined the relationship between these culturally influenced practices and the sleep of racially/ethnically diverse early adolescents. The current study examined if differences exist between 1272 Caucasian, Hispanic/Latino, and African American early adolescents (ages 10-14 years) on self-reported bedtime, SOL, TST, and sleep efficiency, and whether these differences persist when taking into account presence of electronic media in the bedroom (i.e., TV, videogame console, computer, cellphone), media use at bedtime (i.e., watching TV, playing video/computer games, social networking, texting), room sharing, and parent-set bedtimes. Preliminary results showed that females reported worse sleep than males (i.e., longer sleep onset latency, shorter TST, and lower sleep efficiency, with a trend …
Date:
August 2015
Creator:
Marczyk Organek, Katherine D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effectiveness of Relational Equine-Partnered Counseling (REPC) on Reduction of Symptoms of PTSD in Military Veterans: a Single Case Design
There is currently a crisis in military veteran mental health care. At 5-30% of veterans receive a PTSD diagnosis. Veterans face a large gap that exists in accessing and receiving high quality care. One intervention that is becoming more popular is equine assisted counseling (EAC). The purpose of the present study was to examine the effectiveness of Relational Equine-Partnered Counseling (REPC) in reducing symptoms of PTSD in military veterans. I also examined specific PTSD symptom clusters including intrusion, avoidance, negative alterations in cognitions and mood, and alterations in arousal and reactivity. The present study utilized a single-case design consisting of a baseline phase, intervention phase, and post-intervention phase. Participants included four military veterans presenting for war zone-related PTSD: four males and one female, aged 32-67 years, two White/European non-Hispanic, one African American non-Hispanic, and one mixed ethnicity. Symptoms were assessed weekly using the Clinician-Administered PTSD Scale and the PTSD Checklist (PCL-5). The data were analyzed by visual analysis and statistical effect size. The results were mixed across the participants. All participants experienced decreased means between the baseline and intervention phases. However, interpretation of the results indicated that the intervention was effective in some areas for some of the participants. All …
Date:
August 2015
Creator:
Sheade, Hallie E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Modeling and Control of a Motor System Using the Lego EV3 Robot
In this thesis, I present my work on the modeling and control of a motor system using the Lego EV3 robot. The overall goal is to apply introductory systems and controls engineering techniques for estimation and design to a real-world system. First I detail the setup of materials used in this research: the hardware used was the Lego EV3 robot; the software used was the Student 2014 version of Simulink; a wireless network was used to communicate between them using a Netgear WNA1100 wifi dongle. Next I explain the approaches used to model the robot’s motor system: from a description of the basic system components, to data collection through experimentation with a proportionally controlled feedback loop, to parameter estimation (through time-domain specification relationships, Matlab’s curve-fitting toolbox, and a formal least-squares parameter estimation), to the discovery of the effects of frictional disturbance and saturation, and finally to the selection and verification of the final model through comparisons of simulated step responses of the estimated models to the actual time response of the motor system. Next I explore three different types of controllers for use within the motor system: a proportional controller, a lead compensator, and a PID controller. I catalogue the …
Date:
August 2015
Creator:
Mitchell, Ashley C.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Political Philosophy of Rabelais’s Pantagruel: Reconciling Thought and Action
Political thinkers of the Renaissance, foremost among them Niccolò Machiavelli and Desiderius Erasmus, authored works commonly referred to as “mirrors of princes.” These writings described how princes should rule, and also often recommended a certain arrangement or relationship between the intellectual class and the political powers. François Rabelais’s five books of Pantagruel also depict and recommend a new relationship between these elements of society. For Rabelais, the tenets of a philosophy that he calls Pantagruelism set the terms between philosophers and rulers. Pantagruelism, defined in Rabelais’s Quart Livre as “gaiety of spirit confected in contempt for fortuitous things,” suggest a measured attitude toward politics. Rabelais’s prince, Pantagruel, accordingly rejects the tendencies of ancient thinkers such as Diogenes the Cynic who viewed politics as futile. Yet Pantagruel also rejects the anti-theoretical disposition of modern thinkers such as Machiavelli who placed too much confidence in politics. I demonstrate how Rabelais warns against the philosophers’ entrance into public service, and how he simultaneously promotes a less selfish philosophy than that of Diogenes. I argue that Pantagruel’s correction of his friend Panurge through the consultations of experts regarding the latter’s marriage problem shows that fortune will always trouble human life and politics. I also …
Date:
August 2015
Creator:
Haglund, Timothy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Novel Carborane Derived Semiconducting Thin Films for Neutron Detection and Device Applications
Novel carborane (B10C2H12) and aromatic compounds (benzene, pyridine, diaminobenzene) copolymers and composite materials have been fabricated by electron beam induced cross-linking and plasma enhanced chemical vapor deposition (PECVD) respectively. Chemical and electronic structure of these materials were studied using X-ray and ultra-violet photoelectron spectroscopy (XPS and UPS). UPS suggest that the systematic tuning of electronic structure can be achieved by using different aromatic compounds as co-precursors during the deposition. Furthermore, top of valence band is composed of states from the aromatic moieties implying that states near bottom of the conduction band is derived from carborane moieties. Current- voltage (I-V) measurements on the ebeam derived B10C2HX: Diaminobenzene films suggest that these films exhibit enhanced electron hole separation life time. Enhanced electron hole separation and charge transport are critical parameters in designing better neutron voltaic devices. Recently, PECVD composite films of ortho-carborane and pyridine exhibited enhanced neutron detection efficiency even under zero bias compared to the pure ortho-carborane derived films. This enhancement is most likely due to longer electron-hole separation, better charge transport or a combination of both. The studies determining the main factors for the observed enhanced neutron detection are in progress by fabricating composite films of carborane with other aromatic …
Date:
August 2015
Creator:
James, Robinson
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Precession Electron Diffraction Assisted Characterization of Deformation in α and α+β Titanium Alloys
Ultra-fine grained materials with sub-micrometer grain size exhibit superior mechanical properties when compared with conventional fine-grained material as well as coarse-grained materials. Severe plastic deformation (SPD) techniques have been shown to be an effective way to modify the microstructure in order to improve the mechanical properties of the material. Crystalline materials require dislocations to accommodate plastic strain gradients and maintain lattice continuity. The lattice curvature exists due to the net dislocation that left behind in material during deformation. The characterization of such defects is important to understand deformation accumulation and the resulting mechanical properties of such materials. However, traditional techniques are limited. For example, the spatial resolution of EBSD is insufficient to study materials processed via SPD, while high dislocation densities make interpretations difficult using conventional diffraction contrast techniques in the TEM. A new technique, precession electron diffraction (PED) has gained recognition in the TEM community to solve the local crystallography, including both phase and orientation, of nanocrystalline structures under quasi-kinematical conditions. With the assistant of precession electron diffraction coupled ASTARÔ, the structure evolution of equal channel angular pressing processed commercial pure titanium is studied; this technique is also extended to two-phase titanium alloy (Ti-5553) to investigate the existence of …
Date:
August 2015
Creator:
Liu, Yue
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Predictive Modeling for Persuasive Ambient Technology
Computer scientists are increasingly aware of the power of ubiquitous computing systems that can display information in and about the user's environment. One sub category of ubiquitous computing is persuasive ambient information systems that involve an informative display transitioning between the periphery and center of attention. The goal of this ambient technology is to produce a behavior change, implying that a display must be informative, unobtrusive, and persuasive. While a significant body of research exists on ambient technology, previous research has not fully explored the different measures to identify behavior change, evaluation techniques for linking design characteristics to visual effectiveness, nor the use of short-term goals to affect long-term behavior change. This study uses the unique context of noise-induced hearing loss (NIHL) among collegiate musicians to explore these issues through developing the MIHL Reduction Feedback System that collects real-time data, translates it into visuals for music classrooms, provides predictive outcomes for goalsetting persuasion, and provides statistical measures of behavior change.
Date:
August 2015
Creator:
Powell, Jason W.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Lines by Someone Else: the Pragmatics of Apprompted Poems
Over the last sixty years, overtly intertextual poems with titles such as “Poem Beginning with a Line by John Ashbery” and “Poem Ending with a Line by George W. Bush” have been appearing at an increasing rate in magazines and collections. These poems wed themselves to other texts and authors in distinct ways, inviting readers to engage with poems which are, themselves, in conversation with lines from elsewhere. These poems, which I refer to as “apprompted” poems, explicitly challenge readers to investigate the intertextual conversation, and in doing so, they adopt inherent risks. My thesis will chart the various effects these poems can have for readers and the consequences they may hold for the texts from which they borrow. Literary critics such as Harold Bloom and J. H. Miller have described the act of borrowing as competitive and parasitic—“agon” is Bloom’s term for what he sees as the oedipal anxiety of poets and poets’ texts to their antecedents, but an investigation of this emerging genre in terms of linguistic pragmatics shows that apprompted poems are performing a wider range of acts in relation to their predecessors. Unlike Bloom’s theory, which interprets the impulse of poetic creation through psychoanalysis, I employ …
Date:
August 2015
Creator:
Gibson, Kimberly Dawn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library