UNT Theses and Dissertations - 18,663 Matching Results

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GPS CaPPture: a System for GPS Trajectory Collection, Processing, and Destination Prediction

Description: In the United States, smartphone ownership surpassed 69.5 million in February 2011 with a large portion of those users (20%) downloading applications (apps) that enhance the usability of a device by adding additional functionality. a large percentage of apps are written specifically to utilize the geographical position of a mobile device. One of the prime factors in developing location prediction models is the use of historical data to train such a model. with larger sets of training data, prediction algorithms become more accurate; however, the use of historical data can quickly become a downfall if the GPS stream is not collected or processed correctly. Inaccurate or incomplete or even improperly interpreted historical data can lead to the inability to develop accurately performing prediction algorithms. As GPS chipsets become the standard in the ever increasing number of mobile devices, the opportunity for the collection of GPS data increases remarkably. the goal of this study is to build a comprehensive system that addresses the following challenges: (1) collection of GPS data streams in a manner such that the data is highly usable and has a reduction in errors; (2) processing and reduction of the collected data in order to prepare it and make it highly usable for the creation of prediction algorithms; (3) creation of prediction/labeling algorithms at such a level that they are viable for commercial use. This study identifies the key research problems toward building the CaPPture (collection, processing, prediction) system.
Date: May 2012
Creator: Griffin, Terry W.
Partner: UNT Libraries

Electrostatic Effects in III-V Semiconductor Based Metal-optical Nanostructures

Description: The modification of the band edge or emission energy of semiconductor quantum well light emitters due to image charge induced phenomenon is an emerging field of study. This effect observed in quantum well light emitters is critical for all metal-optics based light emitters including plasmonics, or nanometallic electrode based light emitters. This dissertation presents, for the first time, a systematic study of the image charge effect on semiconductor–metal systems. the necessity of introducing the image charge interactions is demonstrated by experiments and mathematical methods for semiconductor-metal image charge interactions are introduced and developed.
Date: May 2012
Creator: Gryczynski, Karol Grzegorz
Partner: UNT Libraries

Reviewing Commercial Music Resources: a Guide for Aspiring Singers and Vocal Professionals

Description: Contemporary commercial music is a broad label used to describe the styles of popular music including pop, rock, rhythm and blues, jazz, hip-hop, country and heavy metal. the vocal ability required for each of these genres varies greatly but may require the use of screaming, belting, utilizing vocal fry and growling or singing with a breathy or dark tone. Singers who wish to perform in these genres may need assistance with vocal technique to assure the longevity and the quality of their singing. Due to the rise in popularity and the accessibility of contemporary commercial music (CCM), commercial pedagogical guides and self-study manuals are abundantly available for purchase. Aspiring singers are searching for appropriate training for this genre without having an awareness of how the voice works and how to maintain good vocal hygiene. Those who seek out private instruction are often frustrated when traditional classical training techniques are offered, rather than techniques utilizing CCM styles. Because CCM pedagogy is relatively new and few pedagogues in this specialized field are well known, the self-taught singer is responsible for finding a reliable study source. Many vocal instructors and choral directors are interested in familiarizing themselves with new stylistic techniques to enhance the performance of their students while maintaining vocal health. By reviewing popular vocal method books and techniques, insight may be given to assist a singer or vocal teacher in selecting resources of CCM styles.
Date: May 2012
Creator: Hanlon, Susan Christina
Partner: UNT Libraries

A New Literary Realism: Artistic Renderings of Ethnicity, Identity, and Sexuality in the Narratives of Philip Roth

Description: This dissertation explores Goodbye, Columbus and Five Short Stories (1959), the Ghost Writer (1979), the Counterlife (1986), the Facts (1988), Operation Shylock (1993), Sabbath's Theater (1995),and the Human Stain (2000), arguing that Roth relishes the telling of the story and the search for self within that telling. with attention to narrative technique and its relation to issues surrounding reality and identity, Roth's narratives stress unreliability, causing Roth to create characters searching for a more complex interpretation of self. Chapter I examines Roth’s negotiation of dual identities as Neil Klugman in Goodbye, Columbus feels alienated and displaced from Christianized America. the search for identity and the merging of American Christianity and Judaism remain a focus in Chapter II, which explores the implications of how, in the Ghost Writer, a young Nathan Zuckerman visits his mentor E.I. Lonoff to find him living in what he believes to be a non-Jewish environment—the American wilderness. Chapter II also examines the difficulties of cultural assimilation in "Eli, the Fanatic," in which Eli must shed outward appearances of Judaism to fit into the mostly Protestant community of Woodenton. Relative to the negotiation of multiple identities, Chapter III considers Sabbath’s attempt, in Sabbath’s Theater, to reconcile his spiritual and physical self when seeking to avoid his inevitable death. Exploring a further dimension of the search for self, Chapter IV traces the legacy of stereotyped notions of identity, considering ways in which Roth subverts stereotypes in the Human Stain. the search for identity and its particular truths remains a focus of Chapter V, which explores Roth's creation of an unstable reality through the Counterlife, the Facts, Operation Shylock, and the Human Stain, suggesting that the literary imagination matters more than truth in fiction. in its attention to Roth's focus on identity, race, and narrative technique, this dissertation contributes ...
Date: May 2012
Creator: Harvell, Marta Krogh
Partner: UNT Libraries

Spatial Analysis of Hiv/aids Survival in Dallas and Harris Counties, Texas

Description: More Texans are living with HIV infection than ever before. in fact, there has been a 6% increase annually, since 2002. This trend is not a result of increased HIV/AIDS incidence, but rather improving life expectancy of those living with HIV. Due to significant advances in HIV/AIDS testing, prevention, and treatment, individuals with HIV are living longer than ever before. However, throughout the state, the life expectancy of a person infected with HIV/AIDS varies spatially. This study investigates and attempts to explain the spatial distribution of HIV/AIDS survival rates by examining neighborhood socioeconomic characteristics. the results suggest that, contrary to expectation, the lowest survival rates occur, not in extreme poverty areas, but rather in moderate SES areas. Too rich to qualify for free treatments, but not rich enough to afford purchasing such treatments, the middle income living with HIV infection are caught between the cracks. the results provide important input for targeting public health interventions to improve HIV/AIDS survival.
Date: May 2012
Creator: Heald, Stephanie
Partner: UNT Libraries

Social Vulnerability and Faith in Disasters: an Investigation Into the Role of Religion in New Orleans After Hurricane Katrina

Description: Disasters are an ever increasing phenomena in our society, resulting in many people being adversely affected. the social vulnerability paradigm explores the social, economic and political factors which contribute to certain populations being disproportionately affected by disasters. However, the paradigm has not yet begun to investigate the cultural or religious ideologies which may affect a population's behavior in disaster. This study is an exploratory investigation into whether religious ideologies may impact a person's decision to prepare, or not, in the event of a disaster. Specifically, it seeks to investigate whether a person who holds a belief that natural disasters are under God's control will prepare for the hazard? the study undertaken five years after Hurricane Katrina in New Orleans show that religious ideology is closely linked with one's capacity to prepare for the hazard which is closely tied in with social structure. It may appear that a person's 'fatalistic' attitude is tied to economic inability to prepare for a hazard. This does not mean that they will not prepare but that preparation may include prayer as their initial attempt to mitigate.
Date: May 2012
Creator: Herring, Alison M.
Partner: UNT Libraries

Forgiveness and Loneliness: Stress and Anxiety’s Correlates in a Student and Clinical Hiv-positive Sample

Description: Persistent periods of stress exacerbate the symptoms of chronic illness. Additionally, loneliness is strongly correlated with stress and both state and trait anxiety. Prolonged periods of loneliness are linked with depression in both clinical and student samples. Forgiveness, a cognitive, emotional, and behavioral response to interpersonal or intrapersonal conflict, is important to social harmony. in this study I describe three studies that examine forgiveness, loneliness, stress, and anxiety in two populations, a student population and an HIV+ clinical population. Study 1 examined how the variables of forgiveness and loneliness are associated with perceived stress in a student sample of undergraduate students. Study 2 examined the same variables (forgiveness, loneliness, and perceived stress) in an HIV-positive clinical population. Finally, study 3 extends the model and examines the relationship of forgiveness and loneliness to variables related to stress, state and trait anxiety. for studies 2 and 3, 63 HIV-positive individuals participated in the cross-sectional correlational study. the data was analyzed in each study using hierarchical linear regression analysis. We also tested the models for the three studies to determine if forgiveness moderates the relationship between loneliness and state and trait anxiety. in study 1, using hierarchical linear regression analyses, I found that increased forgiveness and decreased loneliness was associated with less perceived stress in both a non-clinical and clinical sample of HIV-positive adults. in studies 2 and 3, I conducted hierarchical linear regression analyses and found that increased forgiveness contributed a significant portion of the variance in perceived stress and state and trait anxiety in a non-clinical and HIV-positive sample. I did not find moderation in any of the models.
Date: May 2012
Creator: Hill, Jonathan
Partner: UNT Libraries

The Effects of Priming, Culture, and Context on Perception of Facial Emotion, Self-representation and Thought: Brazil and the United States

Description: Individualist and collectivist cultural approaches describe the relationship between an individual and his or her social surroundings. the current study had a two-fold purpose. the first was to investigate whether Brazilians, like other collective peoples, displayed more group self-representations, categorized items more relationally and paid more attention to context than Americans. the second purpose of this study was to investigate if counter-cultural primes played a role in activating either collective or individual selves. Both American (n = 100) and Brazilian (n = 101) participants were assigned either to a no-prime condition or a counter-cultural prime condition and then were asked to rate emotion cartoons, categorize items, complete the Twenty Statement Test (TST), and choose a representative object. As expected, unprimed Brazilian participants displayed more collectivist patterns on emotional (F[1,196] = 10.1, p = .001, ?²= .049; F[1,196] = 7.9, p = .006, ?²= .038; F[1,196] = 9.0, p = .005, ?²= .044) and cognitive (F[1, 196] = 6.0, p < .01, ?² = .03) tasks than Americans. However, Brazilians offered more individualist self-representations (F[1, 195] = 24.0, p < .001, ?² = .11) than American participants. Priming only had a marginal effect on item categorization (F[1,194] = 3.9, p = .051, ?² = .02). Understanding such cultural differences is necessary in the development of clinicians’ multicultural competence. Therefore, these findings, along with the strengths and limitations of this study and suggestions for future research, are discussed.
Date: December 2011
Creator: Hoersting, Raquel Carvalho
Partner: UNT Libraries

Comparing the 2010 and 2011 Appic Match: Applicant Characteristics and Unmatched Applicant Distress

Description: The internship is one of the most important components of doctoral training in professional psychology. Given the serious problem of the internship imbalance, applicant and program characteristics that constitute a good “fit” with internship training programs have become of greater interest as securing an internship becomes a more competitive process. This study surveyed internship applicants from programs part of the Council of University Directors of Clinical Psychology (CUDCP), before and after the 2010 and 2011 match days. Number of interview offers was found to be the factor most consistently associated with successfully matching, and several other applicant characteristics salient to matching and obtaining interview offers were identified, including applicant personality. Additionally, personal accounts, but not empirical evidence, of going unmatched have attested to the psychological distress associated with this event. in the current study, while going unmatched was not found to be equitable to a traumatic stressor, evidence was found to support significant decrease in subjective well-being with respect to immediate distress. Findings are discussed in terms of the predictability of and implications for the match process and internship imbalance, and recommendations are made for future research directions.
Date: May 2012
Creator: Hogan, Lindsey R.
Partner: UNT Libraries

Establishing Junior-level Colleges in Developing Nations: a Site Selection Process Using Data From Uganda

Description: This research synthesizes data and presents it using mapping software to help to identify potential site locations for community-centered higher education alternatives and more traditional junior-level colleges in Uganda. What factors can be used to quantify one site over another for the location of such an institution and if these factors can be isolated; why should they be used by local authorities? the variables are secured from the Southern and Eastern Africa Consortium for Monitoring Educational Quality (SACMEQ), Afrobarometer, census data, as well as technology reports and surveys. These variables are reduced, grouped and mapped to help determine the best location for a junior-level college. the use of local expert opinion on geopolitical, economic, and educational situations can be interfaced with the database data to identify potential sites for junior-level colleges with the potential to reduce the failure rate of such post-secondary school ventures. These data are analyzed in the context of reported higher education policies and outcomes from the national ministries, United Nations Educational, Scientific and Cultural Organization (UNESCO), quality assurances agencies in the region, the World Bank, and national datasets. the final product is a model and tool that can be used by local experts to better select future sites to expand higher education, especially in rural areas in the least developed countries.
Date: May 2012
Creator: Iaeger, Paula Irene
Partner: UNT Libraries

The Relationships Among Whistle-blowing, Retaliation, and Identity: a Narrative Analysis

Description: Existing whistle-blower research has found that retaliation affects the whistle-blowing process. However, there is little literature focusing on the personal and emotional effects that retaliation can have on the whistle-blower’s life. Furthermore, while whistle-blowing has been studied in various organizational contexts, both public and private, virtually no research exists on whistle-blowing in the context of the public school system. This study examines the effects of the whistle-blowing process, specifically the effects of retaliation, on the life of the whistle-blower through a narrative identity construct in the context of the Texas Public School System. This study utilizes narrative analysis to understand the relationship between retaliation and the whistle-blowers’ narrative identity. the analysis reveals that whistle-blowers’ decisions to disclose instances of wrong-doing are motivated by their desired narrative identities. Furthermore, this study shows that retaliation has the greatest effect when it directly attacks the whistle-blowers’ identities.
Date: May 2012
Creator: Gravley, Dianne Yvonne
Partner: UNT Libraries

A Study of the Intent to Fully Utilize Electronic Personal Health Records in the Context of Privacy and Trust

Description: Government initiatives called for electronic health records for each individual healthcare consumer by 2014. the purpose of the initiatives is to provide for the common exchange of clinical information between healthcare consumers, healthcare providers, third-party payers and public healthcare officials.This exchange of healthcare information will impact the healthcare industry and enable more effective and efficient application of healthcare so that there may be a decrease in medical errors, increase in access to quality of care tools, and enhancement of decision making abilities by healthcare consumers, healthcare providers and government health agencies. an electronic personal health record (ePHR) created, managed and accessed by healthcare consumers may be the answer to fulfilling the national initiative. However, since healthcare consumers potentially are in control of their own ePHR, the healthcare consumer’s concern for privacy may be a barrier for the effective implementation of a nationwide network of ePHR. a technology acceptance model, an information boundary theory model and a trust model were integrated to analyze usage intentions of healthcare consumers of ePHR. Results indicate that healthcare consumers feel there is a perceived usefulness of ePHR; however they may not see ePHR as easy to use. Results also indicate that the perceived usefulness of utilizing ePHR does not overcome the low perceived ease of use to the extent that healthcare consumers intend to utilize ePHR. in addition, healthcare consumers may not understand the different components of usage: access, management, sharing and facilitating third-party ePHR. Also, demographics, computer self-efficacy, personal innovativeness, healthcare need and healthcare literacy impact a healthcare consumer’s privacy concerns and trusting intentions in the context of ePHR and intent to utilize ePHR. Finally, this research indicates that healthcare consumers may need a better understanding of the Health Insurance and Portability and Accountability Act of 1996 (HIPAA) regulations of ePHR as well as ...
Date: May 2012
Creator: Richards, Rhonda J.
Partner: UNT Libraries

The Affect of Mobile Performance Support Devices on Anxiety and Self-Efficacy of Hospital Float Staff

Description: Floating describes the act of staff moving from one unit to another based on the needs of the patients in a hospital. Many staff who float to different units express negative feelings, including anxiety and lack in self-efficacy. However, floating is both an economical and efficient method to use staff across the hospital, especially with current staffing shortages in the United States. This study investigated how the use of mobile performance support devices may help reduce anxiety and increase self-efficacy for those staff who float to different units. with access to multiple resources available on the mobile device, Bandura's social learning theory and self-efficacy concept set the framework through modeling, observing, and imitating others in order to reproduce certain behaviors and tasks and believe in one's capability to perform. a quantitative study incorporating the retrospective pretest-posttest design was conducted using the population of float staff, including both nurses and respiratory therapists, from Children's Medical Center of Dallas. Both the State-Trait Anxiety Inventory and General Self-Efficacy Scale, along with a basic demographic tool, were used to explore anxiety and self-efficacy in relation to the usage of mobile performance support devices. Findings can be used to impact the negative feelings of staff towards the idea of floating.
Date: May 2012
Creator: McKee, Megan Riley
Partner: UNT Libraries

Baseband Noise Suppression in Ofdm Using Kalman Filter

Description: As the technology is advances the reduced size of hardware gives rise to an additive 1/f baseband noise. This additive 1/f noise is a system noise generated due to miniaturization of hardware and affects the lower frequencies. Though 1/f noise does not show much effect in wide band channels because of its nature to affect only certain frequencies, 1/f noise becomes a prominent in OFDM communication systems where narrow band channels are used. in this thesis, I study the effects of 1/f noise on the OFDM systems and implement algorithms for estimation and suppression of the noise using Kalman filter. Suppression of the noise is achieved by subtracting the estimated noise from the received noise. I show that the performance of the system is considerably improved by applying the 1/f noise suppression.
Date: May 2012
Creator: Rodda, Lasya
Partner: UNT Libraries

Monitoring and Increasing Goal Related Instruction and Engagement in Groups of Children with Autism

Description: A high rate of instructional engagement is important to maximize progress in early intensive behavioral interventions (EIBI). Teachers responsible for eliciting instructional engagement may need additional support to maintain high rates of engagement. Literature suggests that goal setting and feedback is effective in increasing performance. the purpose of this study was to evaluate whether goal setting and group feedback would increase engagement in instructional activities related to the children’s goals. Results indicate that goal setting and group feedback was successful in increasing engagement in instructional activities. the results are discussed in the context of engagement, staff performance, group contingencies and performance feedback.
Date: May 2012
Creator: Rossi, Kathleen Anne
Partner: UNT Libraries

Running a Family

Description: This thesis contains two parts. the preface theorizes memory and examines the author’s own experience writing her identity. Part II is a memoir framed with the process of training for a marathon. the marathon acts as a narrative thread that pulls together scenes of memory from the author’s childhood which features the author running away from home on several occasions. Running a marathon and running away from home intertwine to allow the writer to draw conclusions about her life and her family.
Date: May 2012
Creator: Rowntree, Miriam R.
Partner: UNT Libraries

Are They Ready? a Multi-case Study of Traditional and Innovative Texas Teacher’s Perceptions of 21St Century Skills in Teaching and Learning

Description: The 21st century is now in the second decade and the need for 21st century skills is discussed at all levels of education as necessary for student success in the future. Federal, state, and districts are addressing this need and have written technology plans to address 21st century skills needed. the purpose of this dissertation is to contribute to the knowledge of 21st century educational technology. the data includes seven recorded interviews from two separate research projects covering two models of education as teachers discuss teaching, learning, and technology. the data studied determines how educational technology perceived in the school environments has been integrated into the classrooms. the initial scripting of video interviews from two research projects began the analysis of data. Particular themes emerged in response to questions established by the two separate research projects focused on classroom, school, and district environmental arrangements that examined; teaching responsibilities and practices; student learning opportunities; and how technology is woven throughout instruction. Further exploration of themes stemmed from analysis conducted with the qualitative software program, NVivo 9. the themes discussed in this paper relate to instructor perceptions of teaching, learning, classroom procedures, and the role technology plays in each. Also noted are the factors beyond the teacher’s responsibility and set rules that include the school environment, district expectations, and supported teaching strategies for the schools. the teachers expressed their view that technology is an important support for learning and that they used technology to accomplish many of the tasks related to supporting teaching and learning. As perceived by the teachers, a major component that surfaced as a result of the analysis was children’s technology use was most drastically influenced by the expectations of the instructional leader to develop and the need to foster 21st century learning strategies such as critical thinking skills, ...
Date: May 2012
Creator: Royal, Joy
Partner: UNT Libraries

Perception of Foreign Accented Speech: the Roles of Familiarity and Linguistic Training

Description: This paper seeks to address the issue by examining two factors that potentially affect a listener’s perception of foreign accented speech: degree of familiarity (as acquired through a work or personal environment) and amount of ESL or linguistic training. Speech samples were recorded from 18 international students from Hispanic, Asian, and Middle-eastern backgrounds and across all proficiency levels as designated by their academic English program. Six native English speakers were also recorded to serve as a basis for comparison. Listeners were drawn from two pools: people with ESL and/or linguistic training (n=42) and laypersons with no such specialist training (n=36). After completing a background questionnaire to assess familiarity with foreign accented speech, each listener rated all 24 speech samples on the dimensions of comprehensibility, degree of accent, and communicative ability. Results indicate that participants with ESL/linguistic training rate foreign accented speech more positively on all three dimensions than laypersons with no such training. Additionally, degree of familiarity with foreign accented speech is positively correlated with how participants rated the accented speech samples. a number of highly significant interactions between these and other factors including sex of the speaker, proficiency level of the speaker, and L1 family of the speaker were found as well.
Date: May 2012
Creator: Sales, Rachel
Partner: UNT Libraries

The Choral Music of Ola Gjeilo: a New Vision of the Choral Instrument in the 21St Century

Description: The choral music of Norwegian composer Ola Gjeilo (pronounced “yay-loh”) is gaining international acclaim and is widely performed and commissioned by prominent high school, university, and professional choirs. It represents a philosophical approach and vision of the choral instrument for which the conductor must have a clear understanding in order to prepare a meaningful performance. in particular, his music merges diverse musical influences, which results in a product of unique character among choral compositions in the late 20th and early 21st centuries. Gjeilo draws inspiration from a text but then uses its sonic qualities (the sounds of vowels and consonants) to create an atmosphere of sound instead of following the traditions in choral and vocal music of using musical mechanisms (melody, rhythm, and harmony) to reinforce the text poetically. This study provides an overview of Gjeilo’s background, in Chapter 1, and discusses its influence on his compositional philosophy. Chapter 2 contains musical examples from selected works, which are used to illuminate unique attributes found in Gjeilo’s music. Chapter 3 presents important implications to consider aiding choral conductors in their preparation of future performances of Gjeilo’s music.
Date: May 2012
Creator: Schmidt, Brian A.
Partner: UNT Libraries

Detection of Mercury Among Avian Trophic Levels at Caddo Lake and Lake Lewisville, TX

Description: Mercury (Hg) is a globally distributed toxicant that has been shown to have negative effects on birds. in the United States, avian taxa have been shown to possess high Hg concentrations in the northeast, Great Lakes and Everglades ecosystems; however, few studies have measured avian Hg concentrations in other geographic regions. Previous studies have documented high Hg concentrations in multiple organisms in east Texas, but birds were not included in these studies. the main objective of the present study was to quantify Hg concentrations in birds in differing trophic levels at Caddo Lake and Lake Lewisville, TX. Results suggest that Hg concentrations may be high enough to negatively impact some bird taxa, particularly those at high trophic levels, residing at both Caddo Lake and Lake Lewisville.
Date: May 2012
Creator: Schulwitz, Sarah Elizabeth
Partner: UNT Libraries

Adoptive Parenthood: an Exploratory Study of the Influence of Pre-adoption Communication Satisfaction on Post-adoption Family Adjustment and Coping

Description: There are over a million adopted children in the United States, which makes up over 2% of the population. in spite of the fact that the majority of children are adopted into loving and caring homes, early life trauma puts them at higher risk for developing behavioral and emotional problems than non-adopted children. Due to these issues, many adoptive parents encounter post-adoption stress. This stress is often linked to minimal education regarding short- and long-term challenges associated with adoption. the adoption agency is likely the best group for addressing challenges, yet few researchers have studied adoption agency communication and adoptive parent adjustment. in this study I examined pre-adoption communication satisfaction, post-adoption adjustment (life change and parental adjustment), and coping strategies. Hypothesis 1 questioned the relationship between adoptive parents’ pre-adoption communication satisfaction with their social workers and post-adoption family adjustment; this hypothesis was supported only for problems related to home and work life adjustment. Hypothesis 2 predicted coping strategies would mediate the relationship between communication satisfaction and family adjustment. H2 was not supported for both life change and parental adjustment. Research Questions 1a and 1b inquired about the coping strategy that had an impact on life change and parental adjustment; escape-avoidance coping was most common for problems related to parental difficulty adjustment. a second research question was added post hoc; it questioned if special needs adopted children had an impact on family adjustment. Results indicated the special needs designation is related to home and work life adjustment. After discussing the theoretical and practical implications of this study, I offer limitations and directions for future research.
Date: May 2012
Creator: Seebeck, Lara N.
Partner: UNT Libraries

Blogging and Tweens: Communication Portal to Reading Selection and Engagement

Description: The ethnographic study utilized the research techniques of observations, content analysis, and semi-structured interviews with tween participants (i.e., 9 through 13 year-old youth) during an 8-week literary blog project. Twenty-six participants created individual blog pages within a member-only classroom blog site that allowed for online communication between members. the blog project incorporated social networking applications with which youth frequently engage. the research questions ensured data regarding what facets participants found appealing and motivating during the project was collected. the questions allowed for determining if participants utilized peer blogs for reading material selection or repurposed the blogs to discuss other topics. Components of self-determination theory and engagement theory underlay the project design and aided in identifying motivational aspects of the data. Frequency tables outlined the identified patterns and structures of participants’ online activity. Participants found the ability to change the colors of their blog backgrounds and to design their individual blogs and the giving and receiving of feedback to be the two most appealing features of the project. Participants chose books from peer suggestions in the online world but also selected materials from recommendations they received in face-to-face interactions with their peers, their teacher, and the school librarian. Little evidence of repurposing the blog for social topics was observed. Participants engaged in discussions predominantly based around the books they were currently reading or had read. Implications for incorporating social networking applications within the classroom environment are discussed.
Date: May 2012
Creator: Sharber, Shelli K.
Partner: UNT Libraries

The Effects of Textual Fluency on the Rate of Acquisition and Application of Intraverbal Relations

Description: Intraverbal behavior governs core elements of academic and intellectual behavior. These intraverbal relations can be explicitly taught when an individual is prompted to provide an appropriate response with pictures, text, or other stimuli following a verbal stimulus. It is possible that a focus on fluency of the target repertoires may lead to more conclusive data. the current study assessed the effects of precision teaching based instruction for component textual repertoires on the acquisition of intraverbal relations. Specifically, this study compared the effectiveness of two textual prompting procedures (with and without fluency-based instruction) on the acquisition and application of intraverbal relations using time-delay and a carefully controlled set of intraverbal stimuli. Results indicate that the use of textual prompts and an errorless time-delay transfer of stimulus control procedure were effective strategies for teaching intraverbal responses regardless of the inclusion of fluency-based instruction.
Date: May 2012
Creator: Shrontz, Rachael E.
Partner: UNT Libraries

Random Iteration of Rational Functions

Description: It is a theorem of Denker and Urbański that if T:ℂ→ℂ is a rational map of degree at least two and if ϕ:ℂ→ℝ is Hölder continuous and satisfies the “thermodynamic expanding” condition P(T,ϕ) > sup(ϕ), then there exists exactly one equilibrium state μ for T and ϕ, and furthermore (ℂ,T,μ) is metrically exact. We extend these results to the case of a holomorphic random dynamical system on ℂ, using the concepts of relative pressure and relative entropy of such a system, and the variational principle of Bogenschütz. Specifically, if (T,Ω,P,θ) is a holomorphic random dynamical system on ℂ and ϕ:Ω→ ℋα(ℂ) is a Hölder continuous random potential function satisfying one of several sets of technical but reasonable hypotheses, then there exists a unique equilibrium state of (X,P,ϕ) over (Ω,Ρ,θ).
Date: May 2012
Creator: Simmons, David
Partner: UNT Libraries