Understanding the thermodynamic properties of multicomponent mixtures is of critical importance in many chemical and industrial applications. Experimental measurements become progressively difficult as the number of solution components increases -- producing the need for predictive models. Problems in development of predictive models arise if the mixture has one or more components that interact through molecular complexation or association. Experimental solubilities of anthracene and pyrene dissolved in binary systems containing one or more alcohols were measured in order to address this problem. Alcohols examined in this study were: 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 3-methyl-1-butanol, and 1-octanol. In binary solvent mixtures containing only a single self-associating alcoholic solvent, the alkane cosolvents studied were: n-hexane, n-heptane, n-octane, 2,2,4-trimethylpentane, cyclohexane, methylcyclohexane, tert-butylcyclohexane. Predictive solubility equations were developed using mobile order theory. This approach differs from classical solution models by representing hydrogen bonding with a probability term rather than with expressions derived from stepwise equilibria or expressions to represent hypothetical solution aggregates. Results were compared with the predicted solubilities found from using expressions developed using the Kretschmer-Wiebe and Mecke-Kempter approaches for modeling associated solutions. It was found that the mobile order approach provided reasonably accurate predictions for the solute solubilities in the systems studied. The …

The weight loss industry has come under fire from the Federal Trade Commission (FTC) in recent years due to consumer claims that many firms, marketing weight loss products, are using advertisements in an attempt to deceive consumers. Illegitimate weight loss claims have created so much concern that a White Paper call-to-action to investigate misleading weight loss advertisements has been filed. Despite recent interest, little attention has been garnered concerning the understanding of why consumers respond to potentially misleading weight loss claims. Intuitively, an understanding of why consumers fall prey to weight loss claims may aid academics, practitioners, and policy makers as they make important decisions relative to the weight loss industry and its practices. This study fills that void by applying a theory of visceral influences (TVI) to the context of weight loss advertising. Loewenstein's TVI was developed to aid in explaining why consumers make decisions contrary to their long-term self-interest. Visceral influences are drive states that have a direct hedonic impact, have an effect on the relative desirability of various goods and activities, and consequently, have a strong influence over the decisions consumers make. Common visceral cues (cues associated with any reward linked to a visceral factor) include proximity …

This study investigated the effects of interactive lessons and learning style on student learning outcomes in self-defense education classes. The study utilized an experimental design that incorporated four self-defense education classes at the University of North Texas (UNT) during the fall semester 2007 (N = 87). A pre-test was administered during the first week of class to determine prior knowledge of the participants. The Visual Auditory Reading/Kinesthetic Inventory (VARK) was used to assess the learning styles of the students and was completed after the pre-test of knowledge was administered. The treatment group received the interactive lesson and the control received a paper review. The difference between the pre and posttest was used as a measure of improvement of the student's learning outcomes. A 2 (treatment/control) by 2 (pretest/posttest) ANOVA with repeated measures was conducted to examine the differential improvement in knowledge across the intervention. Based on the 2-way ANOVA there was a significant difference between the treatment group and the control group based on their learning outcomes. A repeated measures ANOVA was conducted to determine if there was a significant difference between the groups based on the pre and post test scores. Based on the results of a one week …

Renewal theory began development in the early 1940s, as the need for it in the industrial engineering sub-discipline operations research had risen. In time, the theory found applications in many stochastic processes. In this thesis I investigated the effect of seasonal effects on Poisson and non-Poisson renewal processes in the form of perturbations. It was determined that the statistical analysis methods developed at UNT Center for Nonlinear Science can be used to detect the effects of seasonality on the data obtained from Poisson/non-Poisson renewal systems. It is proved that a perturbed Poisson process can serve as a paradigmatic model for a case where seasonality is correlated to the noise and that diffusion entropy method can be utilized in revealing this relation. A renewal model making a connection with the stochastic resonance phenomena is used to analyze a previous neurological experiment, and it was shown that under the effect of a nonlinear perturbation, a non-Poisson system statistics may make a transition and end up in the of Poisson basin of statistics. I determine that nonlinear perturbation of the power index for a complex system will lead to a change in the complexity characteristics of the system, i.e., the system will reach …

This qualitative action research study examines how critical theory defined and guided my practice as an art teacher educator while I provided inclusion training for seven preservice art teachers during their student teaching. Sources of data included a personal journal, the inclusion curriculum I created for the preservice teachers and questionnaires and interviews. Primary findings indicated that critical theory had a substantive impact on the evolving development of my teaching philosophy, in particular my attention to issues of power redistribution in the classroom and my developing notion of teaching as form of artistry. The findings of this study also indicate that the primary impact of critical theory upon the preservice teachers was the articulation of their personal narratives and its relation to the development of their teaching identities. Further, mentoring these preservice art teachers in critical theory increased their competence in solving educational dilemmas. A primary finding of this study was how significant of a role the supervising or mentor teacher plays in developing preservice teachers' identity. As this is acknowledged, valued and utilized, more collaborative relationships among these stakeholders in the education of the preservice art teacher can be forged. The study provides implications for art teacher educators as …

The purpose of this study was to investigate the relationship between a principal's emotional intelligence and personality and his or her ability to implement and develop professional learning communities within the school. The Professional Learning Community Assessment (PLCA) was administered to principals and teachers in 13 schools in Texas ranging from elementary to high school. Based on the strength of the PLCA scores, two elementary schools were selected to participate in case study research. The principals of these two campuses were administered an emotional intelligence instrument (MSCEIT), a personality instrument (DiSC), and were interviewed along with three of their teachers. The findings indicate that both of these principals scored high in the Influential and Conscientiousness subscales and low in the Dominance subscale. The principals also possessed either near-average or above-average emotional intelligence with both principals scoring particularly strong in the Strategic subscale.

General Nathan F. Twining distinguished himself in leading the American Fifteenth Air Force during the last full year of World War II in the European Theatre. Drawing on the leadership qualities he had already shown in combat in the Pacific Theatre, he was the only USAAF leader who commanded three separate air forces during World War II. His command of the Fifteenth Air Force gave him his biggest, longest lasting, and most challenging experience of the war, which would be the foundation for the reputation that eventually would win him appointment to the nation's highest military post as Chairman of the Joint Chiefs of Staff during the Cold War.

When expenses become an issue, training is often one of the first budget items to be cut. There have been a number of evaluation studies about rates of return from training interventions. Most results are based on interviewing participants about the value of the intervention and its effect on their productivity. This often results in quadruple digit return on investment indications. Decision makers who control the budget often view these kinds of results with skepticism. This study proposes a methodology to evaluate training interventions without asking participants their opinions. The process involves measuring learning through a series of pre-tests and post-tests and determining if scores on pre-tests can be used as predictors of future return on investment results. The study evaluates a series of return on investment scores using analysis of variance to determine the relationship between pre-tests and final return on investment results for each participant. Data is also collected and evaluated to determine if the financial results of the organization during the period of the training intervention could be correlated to the results of the training intervention. The results of the study suggest that the proposed methodology can be used to predict future return on investment from training …

Historians John W. Dower, Craig Cameron, and Ronald Takaki argue that the Pacific War was a war of extermination fueled by race hate. Therefore, the clash between the military forces of the Japanese Empire and United States of America yielded a "kill or be killed" environment across the battlefields of the Pacific. This work examines the conduct of the Second Marine Division during its campaign of conquest against the Japanese held island of Saipan from June 15, 1944-July 9, 1944. It is based upon traditional military history sources to test their theories in context of the conduct of Marines toward Japanese soldiers and civilians during the Saipan campaign. Did Marines practice a war of extermination or conduct themselves in a humane manner?

Toy play represents one of many levels of play where children can expand their repertoires and socially interact with peers. Play typically increases in complexity as the child's repertoire develops; however, children with autism often have delayed play skills. The current study investigated the effects of using a 3-component play training procedure (choices, prompting, and consequences), replicated from a previous study, to increase simple and pretend toy play in three boys with autism. Additional measures were used to observe engagement with materials, children, and adults during a 10-minute session. Observations show increased toy play for two participants and increases in overall engagement for all participants. The findings suggest that the teaching program used is replicable across multiple populations, furthering the advancement of evidence-based practices.

Surfactants are used in a wide assortment of "down-the-drain" consumer products, yet they are often discharged in wastewater treatment plant effluent into receiving water, potentially causing environmental harm. The objective of this project was to predict surfactant toxic units and in-stream nutrients in the upper Trinity River watershed. Surface and pore water samples were collected in late summer 2005. General chemistries and surfactant toxic units were calculated. GIS models of anthropogenic and natural factors were collected and analyzed according to subwatersheds. Multiple regression analyses using the Maximum R2 improvement method were performed to predict surfactant toxic units and in-stream nutrients using GIS and in-stream values. Both geospatial and in-stream parameters generated multiple regression models for surfactant surface and pore water toxic units, as well as in-stream nutrients, with high R2 values. Thus, GIS and in-stream parameter modeling have the potential to be reliable and inexpensive method of predicting surfactant toxic units and nutrient loading in the upper Trinity River watershed.

By conducting this theory-based empirical study, gathering data from working negotiators in the US and Canada, I have determined what primary dynamic activities, communication skills, and negotiation tools are used by hostage/crisis negotiators. Negotiators implement their negotiation and decision strategies differently depending on whether the situations they deal with are instrumental or expressive. I have determined which elements of negotiations and factors affecting negotiations differ while handling instrumental and expressive hostage situations. I found that the collected data did not reveal any significant relationship between handling instrumental/expressive hostage situations differently and belief in the elements of Brenda Dervin's and Shannon-Weaver's theories. I have also determined that the belief in the elements of the Dervin's and Shannon-Weaver's theories is workable and practical for negotiators to use. Based on the above findings, the model suggested by this research adds the elements and directives of Dervin's and Shannon-Weaver's models to the common approach used by the negotiators. This revised model suggests that the negotiators pay attention to the dynamics of the interactions presented between the two parties: the negotiators themselves and hostage takers. The revised model also recommends that the negotiators focus on not only the hostage takers behavioral characteristics, psychological conditions, and …

The purpose of this study was to examine the satisfaction and understanding of parents of young children with disabilities in North Texas in regard to the special education services they receive through their local education authority. A mixed non-experimental research design utilizing the survey method was used to obtain the data collected from a sample of 230 parents with children with disabilities from preschool to elementary ages. Factorial analysis techniques were first used to assess the validity of the 14 quantitative items by splitting the sample into 2 equivalent groups: the development group and the validation group. Exploratory factor analysis extracted 2 factors after eliminating 4 items: satisfaction and understanding. This 2-factor structure was confirmed in the validation group. The final 10-item survey demonstrated satisfactory reliability and validity. Overall, parents were very satisfied with the special education services and reported a good understanding of those services. Two x two (number of children x years of services) ANOVAs were used to examine the differences on parental satisfaction and understanding. No statistically significant differences were found except that parents with 2 or 3 children were more satisfied than the counterparts with only 1 child in the special education program. This difference was …

Arnold Cooke composed many works for oboe including two sonatas, a concerto and several pieces for chamber ensembles; however, his works are rarely performed. Through the analysis of form and tonality in his first oboe sonata, Cooke's musical style and influences become apparent. His musical style was primarily influenced by his teacher, Paul Hindemith, and can be characterized by traditional forms with the contemporary use of quartal harmonies and a variety of tertian sonorities. Cooke wrote music that is accessible for performers and audience members, and one way he achieved this accessibility is through the repetition of melodic ideas. In addition to exact melodic repetition, he also unified his works through fugue-like passages and sequences. Although he lived during a time of experimentation by many composers, Cooke maintained conservative elements in his music that he learned through his studies at Cambridge and through his studies with Hindemith. His first oboe sonata is tonal although he varied modes and used chromatic harmonies throughout. Cooke's clear writing and unique sound in his Sonata for Oboe and Piano (1957) provide oboists a solo piece for the repertoire that demonstrates a modern approach to the traditional style of composition.

Hummel's Concerto for Trumpet (Concerto a Tromba principale) is overtly operatic and is stylistically reminiscent of Mozart's Don Giovanni. Using the methodology of Leonard Ratner and Wye J. Allanbrook, it is possible to explore gesture and rhetoric in Hummel's Concerto for Trumpet and Mozart's Don Giovanni, and achieve a deeper understanding of the stylistic similarities shared between the two works. In the third movement, dance is the most significant link to Don Giovanni. In the second movement, Hummel alternates between the emotions of Donna Anna and Don Ottavio as they appear in act 1, scene 13. The first movement makes extensive use of contrasting topics identified with buffa and seria characters to advance the musical narrative. Comparing Hummel's concerto and Mozart's opera is a hermeneutical approach that illuminates several performance practice implications. Knowing the expressive similarities and rhetorical strategies common to both works clarifies several issues, such as tempo, ornamentation, and above all, expression. Though Mozart's Don Giovanni and Hummel's Concerto for Trumpet are unequal in significance, it would be valuable to any interpretation of Hummel's concerto if the performer and audience acknowledge that the work is rhetorically and stylistically similar to Mozart's Don Giovanni.

We establish the existence of radial solutions to the p-Laplacian equation ∆p u + f(u)=0 in RN, where f behaves like |u|q-1 u when u is large and f(u) < 0 for small positive u. We show that for each nonnegative integer n, there is a localized solution u which has exactly n zeros. Also, we look for radial solutions of a superlinear Dirichlet problem in a ball. We show that for each nonnegative integer n, there is a solution u which has exactly n zeros. Here we give an alternate proof to that which was given by Castro and Kurepa.

This study documents the career of Joseph Eger (b. 1920), who had a short but remarkable playing career in the 1940s, 1950s and early 1960s. Eger toured the United States and Britain as a soloist with his own group, even trading tours with the legendary British hornist, Dennis Brain. He recorded a brilliant solo album, transcribed or arranged several solos for horn, and premiered compositions now standard in the horn repertoire. He served as Principal Horn of the New York Philharmonic, Los Angeles Philharmonic, and the National Symphony. Despite his illustrious career as a hornist, many horn players today do not recognize his name. While Eger was a renowned horn soloist in the middle of the twentieth century, he all but disappeared as a hornist, refocused his career, and reemerged as a conductor, social activist, and author. This dissertation seeks to be the long-overdue comprehensive documentation of Eger's career as the first American horn soloist and his contributions to the world of horn playing. First, a biography of Eger is presented, focusing especially on his education and career as an orchestral player, soloist, and recording artist, including its intersections with the lives of many prominent musicians and personalities of the …

The purpose of this study was to explore the various animal assisted interventions mental health professionals incorporate in the therapeutic treatment process, as well as the various therapeutic purposes intended with each technique. Participants were recruited from animal assisted therapy related databases. Participants included professionals who practiced in the mental health field. Thirty one participants qualified for the study. A survey was developed based on information found reviewing literature related to animal assisted therapy. Nineteen animal assisted therapy techniques and ten therapeutic intentions were identified from a review of the literature. Participants were asked to rate on a Likert scale how often they incorporated each technique in their treatment process. Additionally, participants were asked to identify which therapeutic purposes they intended with each technique. Results indicated participants incorporated a variety of animal assisted techniques for various therapeutic intentions. Results indicated seven animal assisted techniques were incorporated by more than 50% of the participants. Building rapport in the therapeutic relationship was the most common therapeutic intention reported with a variety of animal assisted techniques.

This study hypothesized a direct relationship among three verbal phenomena: derived relational responding, verbal intelligence, and worry. It also hypothesized that experiential avoidance would mediate the relationship between derived relational responding and worry. Overall, results from this study failed to support a relationship between worry and the other two verbal phenomena, however, results did support a relationship between derived relational responding and verbal intelligence. Additionally, results indicated a significant relationship between experiential avoidance and worry. Future research should clarify the relationship among the three primary variables of interest, improve measurement of these variables, be more sensitive to external validity, and promote the study of acceptance-based treatments that target experiential avoidance.

The purpose of this study was to investigate student preferences for content, timing, and method of informed consent within counselor education programs. Participants included 115 students enrolled in counseling internship courses at six counseling programs accredited by the Council for Accreditation of Counseling and Related Educational Programs (CACREP). Participants completed the Informed Consent Preferences Questionnaire (ICPQ), an instrument designed specifically for this study through systematic instrumentation development. Descriptive statistics highlighted participants' moderate to high ratings of perceived importance for an array of suggested content pieces for student informed consent. Participants varied among themselves and between items in relation to preferred timing of informed consent, and they consistently reported a desire for student informed consent to be facilitated through a combination of both oral and written methods. Results of exploratory factor analysis revealed a simple eight-factor structure within the ICPQ and suggested strong internal reliability. Correlations for participant scale scores for the eight factors revealed a variety of small to medium correlations. Results from t-test and one-way analysis of variances (ANOVA) indicated that participant preferences did not vary according to demographic variables. Finally, participants' qualitative responses revealed high levels of support for student informed consent. Findings of this study may aid …

This study investigated what constitutes a teaching curriculum for students with autism in inclusive classrooms in Thailand. The researcher employed 3 qualitative methods: semi-structured interviews, document analysis of curricula and lesson plans, and nonparticipant observations. Six schools were selected as the sites. Participants for interview included 6 principals and 24 teachers. The researcher observed one inclusive classroom for each of the 6 selected schools. The study concentrated on 3 questions: (a) What contributes to appropriate instructional curricula to promote teaching of students with autism in inclusive classrooms in Thailand? (b) What teaching strategies improve the achievement and learning skills of students with autism in inclusive classrooms in Thailand? (c) What are the problems of curricula for teaching students with autism in inclusive classroom in Thailand? Key findings for the research questions were as follows: Common features of effective curricula for teaching students with autism in inclusive classrooms include opportunities, health care, specialized curriculum, students' individual needs and abilities, guidelines of teaching, teacher training and supervision, transition plan, parent involvement, tools/classroom environment, and students' class assignments. The teaching strategies include varying the teaching format (large group, small group, and one-on-one), teaching functional communication (giving direction, close-ended questions or open-ended questions), reinforce …

This study investigated the information seeking process of the networked generation youth. Specifically, I examined the cognitive, affective, and physical information seeking behaviors and problem solving techniques adolescent student users of the networked environment utilize to solve information needs. Grounded in the theoretical context of the information seeking process in the networked environment, the research extended the user-centered approach to modeling the information seeking process of networked generation youth. A mixed model research design was used to address the research questions. Phase 1 used an online questionnaire to solicit information from 125 students in Grades 7-12 regarding their understanding and use of networked environments, information seeking skills, and problem solving techniques. Phase 2 observed 12 students, two from each grade level, to gain an understanding into the information seeking process of networked generation youth. Participants completed information seeking scenarios of varying levels of complexity. As the participants completed the scenario, they engaged in talk-aloud verbal protocol to describe and explain their behaviors and techniques as they advanced through their information seeking process. Semi-structured interviews were conducted which provided an opportunity for the participants to clarify their information seeking experience. A profile of students' networked environment knowledge and use in relationship …

A concentrated reading of Benjamin Britten's Nocturne through details of the composer's biography can lead to new perspectives on the composer's identity. The method employed broadens current understandings of Britten's personality and its relationship to the music. After creating a context for this kind of work within Britten scholarship, each chapter explores a specific aspect of Britten's identity through the individual songs of the Nocturne. Chapter 2 focuses on how Britten used genres in a pastoral style to create his own British identity. Chapter 3 concentrates on the complex relationship between Britten's homosexuality and his pacifism. Chapter 4 aims to achieve a deeper understanding of Britten's idealization of innocence. The various aspects of Britten's personality are related to one another in the Conclusion.

The rapidly intensifying adoption of the Internet channel for marketing and sales by incumbent bricks-and-mortar retailers underscores the importance of assessing the impact of the online channel strategies on firm performance in the dynamic competitive environment. At the time when store-based retailers increasingly dominate online sales the questions of when and how an incumbent retailer should adopt an online channel to achieve and sustain a competitive advantage are of utmost interest for both marketing scholars and practitioners. This dissertation investigates the role of two strategic decisions in affecting firm performance: (a) the order of adopting an online channel by incumbent retailers and (b) the degree of coordination between store and online sales channels. The resource-based view and the dynamic capabilities approach are used as theoretical foundations for the study. Following resource-based logic and applying a contingency perspective, this research proposes that firm-specific resource endowments determine the success of the order of online entry strategy for incumbent retailers. This dissertation utilizes the dynamic capabilities approach to propose that the strategy of inter-channel channel coordination leads to higher performance when core, unique dynamic capabilities pertaining to e-commerce are developed in-house, as opposed to being outsourced. By posing and answering the research questions …