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Identification of Remote Leadership Patterns in Academic and Public Libraries (open access)

Identification of Remote Leadership Patterns in Academic and Public Libraries

Seminal works on leadership, including those in librarianship define a traditional model of interaction between leaders and followers without reference to the information technology-driven environment. In addition, remote leadership indicates a different model from the traditional model, one that is focused on the interaction of leaders and their staff through digital technology. Although leaders still use face-to-face interaction, due to varied work schedules or job responsibilities, they also recognize the need to lead employees remotely. Leadership studies in library literature have not addressed how library leaders use information technology to lead employees remotely, nor have these studies addressed remote leadership and remote employees, except for some articles on telecommuting. As a result, this research was conducted to address this gap, providing an exploratory foundation of emergent patterns of remote leadership with its associated leadership dimensions rooted in personality traits, behaviors, and skills. Quantitative and qualitative data were obtained from a small sample size of academic and public-library leaders in the United States who participated in a Web-based survey designed specifically for this study, limiting generalizations. Factor analysis was the principal methodology used to obtain findings. Its composite factor scores were also used in the t-test and chi-square analyses. This study …
Date: August 2008
Creator: Venetis, Mary Jo
System: The UNT Digital Library
The impact of gender effects on consumers' perceptions of brand equity: A cross-cultural investigation. (open access)

The impact of gender effects on consumers' perceptions of brand equity: A cross-cultural investigation.

Despite a long-standing tradition to view gender as a unitary theoretical construct, there is an increasing approbation afforded to gender identity as a multifarious construct. Over and above physiological characteristics, gender identity is a psychological and a social construct. More than simply a biological classification, both gender and gender identity have been explored as portentous moderators of consumers' cognitive and emotive states, brand attributions and shopping behaviors. How might gender differences be manifested in building and sustaining brand relationships? This is the seminal question addressed in the present research. The overarching objective of this research is to address how the broadened conceptualization of gender impacts customer-based brand equity across U.S. and Chinese consumers. The focal populations of interest are related to markedly different levels of brand penetration in each a post-developed and transitional market setting. Furthermore, it provides a platform for investigating how gender identities may differ across two of the largest consumer buying groups in the global marketplace. Toward this goal, this research explores the multidimensionality of gender as a construct, and then empirically investigates how an extended view of gender may or may not impact consumer-based brand equity. Based on an integration of extant theories in gender identity …
Date: August 2008
Creator: Ye, Lei
System: The UNT Digital Library
The Impact of Social Capital and Dynamic Capabilities on New Product Development:  An Investigation of the Entertainment Software Industry (open access)

The Impact of Social Capital and Dynamic Capabilities on New Product Development: An Investigation of the Entertainment Software Industry

Businesses today face intense international competition, a heightened pace of development and shortened product life cycles. As a result, many researchers recommend firms collaborate and partner with other firms to succeed. With over a decade of research examining alliances and inter-firm collaboration, we know a great deal about the benefits and outcomes firms realize through collaboration. An important gap exists, however, in our understanding of the effect of partnering firms on collaborative outputs. This study attempts to address this gap by examining the success of collaborative new product development outputs. The study was a quasi-experimental study using archival, time-series data. Hypotheses were tested at the project level, defined as the product output from the collaborative development effort. Predictors were developed at both the firm and dyadic levels. Several findings emerged from this research. The primary finding is that roles of alliance partners impact which capability and capital benefits accrue. Firms functioning as a publisher benefit from increases in relevant experience. Firms functioning as a developer benefit from working in areas in which they have experience, but largely to the extent that the developer also generalizes their capabilities. One implication emerging from the capability findings suggests a need for configurational capability …
Date: August 2008
Creator: Voelker, Troy A.
System: The UNT Digital Library
Individual attachment styles and the correspondence/compensation hypotheses in relation to depression and depressive experiences. (open access)

Individual attachment styles and the correspondence/compensation hypotheses in relation to depression and depressive experiences.

Two hundred twenty individuals participated in the present study from a university population. The study examined the relationship among attachment styles to caregivers, relationship with God, depressive symptomology, and depressive experiences. Attachment theorists have suggested a connection between childhood attachment to caregivers and current attachment to God through the idea that individuals have "working models" that form how they interpret present relationships. For the most part, the results of the current study supported the idea of correspondence between attachment to caregiver and attachment to God. Individual attachment styles to caregivers matched their attachment style to God. However, when caregiver religiousness was included as a moderating variable, results supported the theory of combined compensation-correspondence for those with insecure attachments to caregivers. Individuals with insecure attachment to caregivers were more likely to compensate for their insecure attachment bonds through participation in religious activity, whereas their internal, private relationship with God corresponded with their previous insecure attachment bonds. Individuals with insecure attachment to caregivers were more likely to endorse symptoms of depression and report introjective, but not anaclitic, depressive experiences. With respect to attachment to God, introjective depressive experiences were positively related to both anxious and avoidant attachments, whereas, anaclitic depressive experiences were …
Date: August 2008
Creator: Hill, Mary Kathleen
System: The UNT Digital Library
Information systems success and technology acceptance within a government organization. (open access)

Information systems success and technology acceptance within a government organization.

Numerous models of IS success and technology acceptance their extensions have been proposed and applied in empirical. This study continues this tradition and extends the body of knowledge on the topic of IS success by developing a more comprehensive model for measuring IS success and technology acceptance within a government organization. The proposed model builds upon three established IS success and technology acceptance frameworks namely the DeLone and McLean (2003), Venkatesh et al.'s (2003) unified theory of acceptance and use of technology (UTAUT), and Wixom and Todd (2005). The findings from this study provide not only a comprehensive IS success assessment model but also insights into whether and how IS success models are influenced by application variables as applied within a government organization. Exploratory factor analysis and confirmatory factor analysis were performed for instrument refinement and validity test of the existing and proposed models. Using data from employees of a local government municipal, the comprehensive model explained 32 percent variance. Four of the hypothesis were fully supported five were not supported, and four were partially supported. In addition, the results suggest that behavioral intention may not be the best predictor of technology acceptance in a mandatory environment.
Date: August 2008
Creator: Thomas, Patricia
System: The UNT Digital Library
Institutional ownership and dividend policy: A framework based on tax clientele, information signaling and agency costs. (open access)

Institutional ownership and dividend policy: A framework based on tax clientele, information signaling and agency costs.

This study is an empirical examination of a new theory that links dividends to institutional ownership in a framework of both information signaling and agency costs. Under this theory put forth by Allen, Bernardo and Welch in 2000, dividends are paid out to attract tax-favored institutional investors, thereby signaling good firm quality and/or more efficient monitoring. This is based on the premise that institutions are considered sophisticated investors with superior ability and stronger incentive to be informed about the firm quality compared to retail investors. On the agency level, institutional investors display monitoring capabilities, and can detect and correct managerial pitfalls, thus their presence serves as an assurance that the firm will remain well run. The study provides a comprehensive analysis of the implications of the theory by testing various aspects of the relationship between dividends and institutional holdings. Unlike the prevalent literature on this topic, I give specific attention to the different types of institutional investors and their incentives to invest in dividend paying stocks. Moreover, I analyze the signaling and the agency effects on the market reaction to dividend initiations within the framework proposed by the theory. Finally, I test the smoothing effect institutions have on dividends by …
Date: August 2008
Creator: Zaghloul Bichara, Lina
System: The UNT Digital Library
An Interpretive Analysis of George Antheil's Sonata for Trumpet and Piano (open access)

An Interpretive Analysis of George Antheil's Sonata for Trumpet and Piano

American composer George Antheil's Sonata for Trumpet and Piano was written in 1951. This dissertation provides historical and theoretical information that gives insight into the interpretation of this sonata. Reasons why the piece deserves greater attention with respect to the standard twentieth century trumpet literature are also given. Antheil's music was influential in the development of classical music in the first half of the 20th century and, more specifically, contributed to the establishment of an American style of classical music. Composed near the end of his life, this sonata has its roots in this heritage. The understanding of Antheil's history, motivations, and compositional techniques is intended to help bring a performance of this sonata to its full potential.
Date: August 2008
Creator: Fenderson, Mark
System: The UNT Digital Library
An Investigation of the Nonverbal Communication Behaviors and Role Perceptions of Pre-Service Band Teachers who Participated in Theatre Seminars (open access)

An Investigation of the Nonverbal Communication Behaviors and Role Perceptions of Pre-Service Band Teachers who Participated in Theatre Seminars

This qualitative study used a multiple case study methodology to explore the nonverbal communication behaviors and role perceptions of pre-service band teachers, and the extent to which these individuals found meaning and value in theatre seminars with respect to those factors. The informants participated in three theatre seminars taught by theatre faculty at the researcher's university. The researcher collected data in the form of videotaped theatre seminar observations, videotaped classroom teaching observations, videotaped informant reflections of teaching episodes, online peer discussions and journaling, and informant interviews. Data were analyzed, coded, and summarized to form case summaries. A cross-case analysis was performed to identify emergent themes. The broad themes identified were past experience, adaptation, realization, and being aware. The informants found that the theatre seminars increased their awareness of nonverbal communication behaviors in the classroom, and had the potential to be meaningful and valuable with respect to their perceptions of their roles as teachers.
Date: August 2008
Creator: Vandivere, Allen Hale
System: The UNT Digital Library
IT Offshoring Success: A Social Exchange Perspective (open access)

IT Offshoring Success: A Social Exchange Perspective

Spending by U.S. companies in offshore IT services continues at unprecedented levels despite a high failure rate. This study fills a gap in the existing literature by examining the client-vendor offshoring relationship through the theoretical lens of social exchange theory at the organizational level of analysis from the client's perspective. Social exchange theory focuses on the exchange of activities between two parties, whether they are individuals or companies and was used as a basis for examining the client and vendor relationship. Variables were identified by a review of the literature primarily from IT outsourcing and offshoring but also from general IT, marketing, sociology and organizational science literature. Data was collected using a field survey of Fortune 500 CIOs representing a population of organizations at the forefront of the offshoring phenomenon. The survey instrument was developed based on the adaptation of previously validated scales. Hypotheses regarding the correlations between social variables such as trust, communication, dependence, power, shared values and offshoring success were tested using Spearman's rho correlation. Seven of the hypotheses were supported, four hypotheses were not supported and one hypothesis was deemed not testable due to lack of information.
Date: August 2008
Creator: St. John, Jeremy
System: The UNT Digital Library
Late adolescents' parental, peer, and romantic attachments as they relate to affect regulation and risky behaviors. (open access)

Late adolescents' parental, peer, and romantic attachments as they relate to affect regulation and risky behaviors.

The current study examined the relationships among attachment styles to parent, peer, and romantic partner, ability to regulate emotion, as well as engagement in sexual behaviors and substance use. Attachment theory and previous research suggests that an individual learns how to manage emotions through the modeling of appropriate techniques and a stable sense of self-worth. These two aspects develop through a secure attachment bond with an important figure. When an individual does not have a secure attachment bond in which to practice adaptive affect regulation strategies, he/she may attempt to manage emotions through external means, such as sexual behaviors or substance use. Overall, results supported these associations, with some notable exceptions. Across attachment sources a secure attachment style was related to lower levels of psychological distress and less engagement in substance use. In contrast to the findings from earlier studies, affect regulation did not mediate the relationship between attachment and substance use, and engagement in sexual behaviors was not significantly related to either attachment style or affect regulation.
Date: August 2008
Creator: Ingle, Sarah J.
System: The UNT Digital Library
Megatrends in Higher Education (open access)

Megatrends in Higher Education

Utilizing the theory of John Naisbitt's 1982 Megatrends, this study identifies eight trends for the future of higher education using content analysis of generalized print media reports for three bell-wether states. For the period of 2001-2005, generalized reporting for three newspapers, the Los Angeles Times from Los Angeles, CA, the Miami Herald from Miami, FL, and the Denver Post from Denver, CO, included over four thousand articles and covered 21 primary topics and over 200 secondary topics. Eight trends emerge from the content analysis. Trend 1, from the ivory tower to the public domain, identifies increasingly critical public scrutiny of higher education standards and curricula. Fight or flight, Trend 2, reveals more consistent no-tolerance policies for student behavior. Trend 3, scholar to celebrity, reveals an increasingly public role for university presidents. Academic freedom to academic flexibility, Trend 4, identifies a tightening of academic freedom policies for university staff and faculty. Trend 5, pay now, learn later, focuses on increased popularity of pre-paid and tax free plans for saving college tuition. Fraternity party to fraternity accountability, Trend 6, identifies increased scrutiny of Greek organizations and Greek life within the university environment. Trend 7, tenure to temporary, reflects the growing trend of …
Date: August 2008
Creator: Smith, Shannon Tucker
System: The UNT Digital Library
Morphological and physiological developmental consequences of parental effects in the chicken embryo (Gallus gallus domesticus) and the zebrafish larva (Danio rerio). (open access)

Morphological and physiological developmental consequences of parental effects in the chicken embryo (Gallus gallus domesticus) and the zebrafish larva (Danio rerio).

Cardiac, metabolic and growth response of early-stage chicken embryos to perturbations in yolk environment was investigated. Also, effects of parental hypoxia exposure on hypoxia resistance, thermal tolerance and body length of zebrafish larvae were investigated. In the first study, thyroxine, triiodothyronine and testosterone produced differential effects on heart rate and development rate of chicken embryos during the first 4 days of development. Triiodothyronine caused a dose-dependent increase in heart rate when applied at 40 or 70 hours of age, while thyroxine caused a dose-dependent increase in heart rate when applied at 40 hours only. Testosterone and propyl-thiouracil (deiodinase antagonist) did not have an effect on heart rate. Development rate was not changed by thyroxine, triiodothyronine, testosterone or propyl-thiouracil, which suggested that heart rate changes did not result from changes in embryo maturity. In the second study, chicken embryos exposed to yolks of different bird species during early-stage embryonic development showed changes in heart rate, mass-specific oxygen consumption and body mass that scaled with the egg mass, incubation period length, and yolk triiodothyronine and testosterone levels of the species from which yolk was derived. In the third study, this phenomenon was investigated between layer and broiler chickens. Heart rate, oxygen consumption …
Date: August 2008
Creator: Ho, Dao H.
System: The UNT Digital Library
Neuropsychologic correlates of a normal EEG variant: The mu rhythm. (open access)

Neuropsychologic correlates of a normal EEG variant: The mu rhythm.

Although the mu rhythm is traditionally defined as a normal EEG variant, recent evidence suggests that mu may have functional significance in a variety of disorders such as autism, Parkinson's disease, and multiple sclerosis. While an increasing number of articles have focused on the blocking mechanism of mu in relation to various cognitive processes and disorders, few have examined the significance of a prominent mu rhythm in the background EEG. A few studies have examined the relationship between the mu rhythm and psychological disturbance, such as attentional and affective disorders. Increasing evidence suggests that EEG and qEEG variables may be useful in classifying psychiatric disorders, presenting a neurophysiological alternative to traditional symptom-based diagnosis and classification. Thus, the intention of the present study was to examine the relationship between neuropsychological variables, gathered from multiple assessment sources, and the presence of a prominent mu rhythm in the EEG. Results did not show a statistically significant difference between individuals with and without a prominent mu rhythm on the Test of Variables of Attention (TOVA); although individuals in the mu group showed a pattern of increased impulsivity and performance decrement over time. For adults, no significant differences were observed between groups on psychological variables …
Date: August 2008
Creator: Simms, Lori A.
System: The UNT Digital Library
The Nonadditive Generalization of Klimontovich's S-Theorem for Open Systems and Boltzmann's Orthodes (open access)

The Nonadditive Generalization of Klimontovich's S-Theorem for Open Systems and Boltzmann's Orthodes

We show that the nonadditive open systems can be studied in a consistent manner by using a generalized version of S-theorem. This new generalized S-theorem can further be considered as an indication of self-organization in nonadditive open systems as prescribed by Haken. The nonadditive S-theorem is then illustrated by using the modified Van der Pol oscillator. Finally, Tsallis entropy as an equilibrium entropy is studied by using Boltzmann's method of orthodes. This part of dissertation shows that Tsallis ensemble is on equal footing with the microcanonical, canonical and grand canonical ensembles. However, the associated entropy turns out to be Renyi entropy.
Date: August 2008
Creator: Bagci, Gokhan Baris
System: The UNT Digital Library
Oligonucleotide guanosine conjugated to gallium nitride nano-structures for photonics. (open access)

Oligonucleotide guanosine conjugated to gallium nitride nano-structures for photonics.

In this work, I studied the hybrid system based on self-assembled guanosine crystal (SAGC) conjugated to wide-bandgap semiconductor gallium nitride (GaN). Guanosine is one of the four bases of DNA and has the lowest oxidation energy, which favors carrier transport. It also has large dipole moment. Guanosine molecules self-assemble to ribbon-like structure in confined space. GaN surface can have positive or negative polarity depending on whether the surface is Ga- or N-terminated. I studied SAGC in confined space between two electrodes. The current-voltage characteristics can be explained very well with the theory of metal-semiconductor-metal (MSM) structure. I-V curves also show strong rectification effect, which can be explained by the intrinsic polarization along the axis of ribbon-like structure of SAGC. GaN substrate property influences the properties of SAGC. So SAGC has semiconductor properties within the confined space up to 458nm. When the gap distance gets up to 484nm, the structure with guanosine shows resistance characteristics. The photocurrent measurements show that the bandgap of SAGC is about 3.3-3.4eV and affected by substrate properties. The MSM structure based on SAGC can be used as photodetector in UV region. Then I show that the periodic structure based on GaN and SAGC can have photonic …
Date: August 2008
Creator: Li, Jianyou
System: The UNT Digital Library
Parents' beliefs about developmentally appropriate practice in early childhood programs in Taiwan. (open access)

Parents' beliefs about developmentally appropriate practice in early childhood programs in Taiwan.

Western educational policies and practices have impacted Taiwanese early childhood programs. The concept of developmentally appropriate practice has become part of the educational program for young children in Taiwan. This research study was completed to: (a) describe Taiwanese parents' beliefs about developmentally appropriate practice (DAP) in early childhood programs; (b) examine group differences between fathers' and mothers' beliefs about DAP; (c) investigate group differences between parents of different socioeconomic statuses beliefs about DAP; (d) explore group differences between parents' beliefs about DAP when their children attend different types of schools (public and private); and (e) identify salient factors related to the variability of developmentally appropriate beliefs of Taiwanese parents. Three hundred seventy-nine matched Taiwanese parent pairs (mothers and fathers) participated in this survey research study. All parents had at least one child between the ages of 3 and 6 years. Four hundred forty-eight children attended public schools, and 415 attended private schools. The Teacher Beliefs Questionnaire was modified and used to collect data in this study. Findings showed: (a) fathers' and mothers' beliefs about DAP are significantly correlated; (b) fathers' and mothers' socioeconomic statuses are significantly correlated with their developmentally inappropriate practice beliefs; and (c) parents' socioeconomic status was a …
Date: August 2008
Creator: Yen, Yaotsung
System: The UNT Digital Library
Perceptions of agency: Beliefs of four adolescent girls in high school as revealed through literature discussions. (open access)

Perceptions of agency: Beliefs of four adolescent girls in high school as revealed through literature discussions.

Published research suggests that cultural practices and institutional structures influence adolescent girls' engagement and achievement in school. This study was an attempt to further investigate that claim by describing the perceptions of agency held by four adolescent girls in high school. Members of the same English class, the girls volunteered to participate in three lunchtime meetings to discuss Evelyn Coleman's (2001) Born In Sin. Analysis of classroom observations, transcripts of audio recordings of the book discussions, and individual interviews yielded a more precise definition of agency than those used in previous research, including a view of agency as dialogic. In addition, four major themes describe these girls' agentic moves: (1) a temporal orientation, which connects the past, present, and future; (2) responsibility for positive and negative events; (3) strategic decision making; (4) negotiating with people in power. Implications of this study inform both teaching decisions and future research related to adolescent girls.
Date: August 2008
Creator: Curtis, Joan Scott
System: The UNT Digital Library
A Performer's Guide to George Crumb's Makrokosmos  IV (Celestial Mechanics) (open access)

A Performer's Guide to George Crumb's Makrokosmos IV (Celestial Mechanics)

George Crumb (b.1929)'s Makrokosmos is recognized as one of the masterpieces of twentieth century piano writing. Inexplicably, volume four of Makrokosmos, Crumb's only four-hand piano piece, is rarely studied by Crumb scholars. According to Crumb's program notes, his Makrokosmos is meant to be a hybrid of piano and orchestral sound. Crumb devised a list of signs and abbreviated letters to explain his specific instructions to the performers. The pianists who plan to perform Makrokosmos need to study Crumb's notations carefully in order to faithfully realize the composer's intentions. This dissertation examines the composer's treatment of four hands at the piano. In addition, a performer's analysis and practical "translation" of these techniques is provided, in the hopes of rendering this amazing piece more accessible to pianists in search of new and wonderful repertoire for piano four hands. It is also hoped that future composers will be inspired by Crumb's innovations and imaginative ideas.
Date: August 2008
Creator: Kim, Hyangmee
System: The UNT Digital Library
Personality and the prediction of outcome following rehabilitation in persons with acquired brain injuries: The Millon Behavioral Medicine Diagnostic (MBMD). (open access)

Personality and the prediction of outcome following rehabilitation in persons with acquired brain injuries: The Millon Behavioral Medicine Diagnostic (MBMD).

Neuropsychological rehabilitation following acquired brain injury is increasingly recognized as essential with the advancements in research evidence of its effectiveness, particularly as current estimates of disability following the most common forms of brain injury (traumatic brain injury and cerebrovascular accident) are so high. Improvements in predictive capabilities of researchers and clinicians are paramount in designing effective interventions. As many variables associated with outcome following brain injury are not controllable (e.g. severity of the injury, age, education), it is essential that rehabilitation programs design interventions to target those variables that are susceptible to amelioration. While personality factors have been shown to affect outcome in other medical illnesses, only a few studies have examined the influence of personality on outcome following neurorehabilitation for acquired brain injury. The results of these studies have been mixed. This study used the Millon Behavioral Medicine Diagnostic (MBMD) to predict outcome as measured by the Mayo-Portland Adaptability Index (MPAI-4) following brain injury rehabilitation in a heterogeneous sample of persons with acquired brain injuries (N = 50). It was hypothesized that specific coping styles scales from the MBMD (Introversive, Dejected, Oppositional), which are based on Millon's personality system, would predict outcome. Results indicated that both the Introversive and …
Date: August 2008
Creator: Beck, Kelley D.
System: The UNT Digital Library
Pride and sexual friendship: The battle of the sexes in Nietzsche's post-democratic world. (open access)

Pride and sexual friendship: The battle of the sexes in Nietzsche's post-democratic world.

This dissertation addresses an ignored [partly for its controversial nature] aspect of Nietzschean philosophy: that of the role of modern woman in the creation of a future horizon. Details of the effects of the Enlightenment, Christianity and democracy upon society are discussed, as well as effects on the individual, particularly woman. After this forward look at the changes anticipated by Nietzsche, the traditional roles of woman as the eternal feminine, wife and mother are debated. An argument for the necessity of a continuation of the battle of the sexes, and the struggle among men and women in a context of sexual love and friendship is given. This mutual affirmation must occur through the motivation of pride and not vanity. In conclusion, I argue that one possible avenue for change is a Nietzschean call for a modern revaluation of values by noble woman in conjugation with her warrior scholar to bring about the elevation of mankind.
Date: August 2008
Creator: Yancy, Lisa Fleck Uhlir
System: The UNT Digital Library
A Program Committed to the Persistence of African-American Males in Higher Education (open access)

A Program Committed to the Persistence of African-American Males in Higher Education

This qualitative study described and examined the characteristics, components and theoretical design of the Student African-American Brother (SAAB). The SAAB is a national program that seeks to increase the academic and social integration of African-American males in higher education to increase their potential to graduate with an undergraduate degree. The SAAB's academic and social integration strategies were compared to Bean and Bennett's conceptual model of black student attrition to determine the congruency between the organization's strategies and the theoretical framework. The methodology was case study. Thirty semi-structured interviews were held with past and current members of the organization to gain a broader knowledge of the SAAB strategies and interventions used to promote their academic and social integration. The research revealed the SAAB applies a three dimensional approach which consists of providing a supportive environment, supporting academic goals, and encouraging campus and community involvement. This approach increases the students' understanding of the organization and structure of the higher education setting to yield successful matriculation through a four year college or university.
Date: August 2008
Creator: Jackson, Princess D.
System: The UNT Digital Library
Psychological characteristics contributing to performance on neuropsychological tests and effort testing. (open access)

Psychological characteristics contributing to performance on neuropsychological tests and effort testing.

The issue of effortful patient performance has been an area of clinical interest in individuals with minor traumatic brain injury (mTBI). Clinical attention to this area has increased largely because of an increase in the number of worker's compensation claims, injury-related lawsuits and/or insanity defense pleas. As patients are presented with the opportunity for secondary gain, the issue of optimum performance on neuropsychological measures becomes salient. In addition to neurocognitive deficits, there are psychological characteristics associated with mTBI including depression, emotional disturbance, personality changes, and other psychopathology. This study utilized the MSVT, a set of standard neuropsychological instruments, and the Minnesota Multiphasic Inventory-2 (MMPI-2) to investigate the relationships between effort, psychological characteristics, and neuropsychological functioning in individuals with minor traumatic brain injuries. The first objective of this study was to determine which psychological factors were related to effort in mTBI. The second objective was to determine if there were differences between groups that performed poorly on effort testing and groups that performed adequately on effort testing, based on relevant psychological characteristics. The results of the analyses supported the first hypothesis. Hysteria was inversely related to effort, and Mania was positively related to effort on one of five measures of effort. …
Date: August 2008
Creator: Hilborn, Robert Scott
System: The UNT Digital Library
Readiness for change as a predictor of treatment effectiveness: An application of the transtheoretical model. (open access)

Readiness for change as a predictor of treatment effectiveness: An application of the transtheoretical model.

Clinical research suggests that adolescent offenders often do not view their criminal behaviors as problematic and, therefore, are not motivated for treatment. Although customarily defined as a static characteristic, the transtheoretical model (TTM) proposes treatment amenability is dynamic and can be achieved through tailored interventions that motivate individuals for treatment. The current study examines the predictive validity of TTM measures for adolescent offenders at a maximum security correctional facility. In particular, the Stages of Change Scale (SOCS) and Decisional Balance for Adolescent Offenders (DBS-AO) were compared with a more traditional assessment tool utilized in evaluating treatment amenability of juvenile offenders (i.e., Risk-Sophistication-Treatment Inventory; RSTI). One hundred adolescent offenders from the Gainesville State School completed two waves of data collection with a 3-month time interval. Information was collected on offenders' treatment progress between waves. Consistent with TTM research, predictors of treatment progress included low scores on the Cons scale on the DBS-AO and on the Precontemplation scale on the SOCS. Participants in the most advanced levels of treatment also scored high on the Sophistication-Maturity scale on the RSTI and the Impression Management scale on the Paulhus Deception Scale.
Date: August 2008
Creator: Jordan, Mandy J.
System: The UNT Digital Library
Reducing the Computational Cost of Ab Initio Methods (open access)

Reducing the Computational Cost of Ab Initio Methods

In recent years, advances in computer technology combined with new ab initio computational methods have allowed for dramatic improvement in the prediction of energetic properties. Unfortunately, even with these advances, the extensive computational cost, in terms of computer time, memory, and disk space of the sophisticated methods required to achieve chemical accuracy - defined as 1 kcal/mol from reliable experimental data effectively - limits the size of molecules [i.e. less than 10-15 non-hydrogen atoms] that can be studied. Several schemes were explored to help reduce the computational cost while still maintaining chemical accuracy. Specifically, a study was performed to assess the accuracy of ccCA to compute atomization energies, ionization potentials, electron affinities, proton affinities, and enthalpies of formation for third-row (Ga-Kr) containing molecules. Next, truncation of the correlation consistent basis sets for the hydrogen atom was examined as a possible means to reduce the computational cost of ab initio methods. It was determined that energetic properties could be extrapolated to the complete basis set (CBS) limit utilizing a series of truncated hydrogen basis sets that was within 1 kcal/mol of the extrapolation of the full correlation consistent basis sets. Basis set truncation for the hydrogen atom was then applied to …
Date: August 2008
Creator: Mintz, Benjamin
System: The UNT Digital Library