The effects of two positive reinforcement procedures were evaluated to increase contact with, proximity to, and acceptance of new foods in a young child with autism. During baseline, two groups of six food items were presented. One group was intervened on. The first condition involved a changing criterion contingency and social attention as a consequence. The second involved a shaping contingency and access to videos as a consequence. The types of contact emitted, the amount of time spent contacting the food, and two affect topographies were measured. The second procedure resulted in increased duration and variety of contact, and increases of both affect topographies. Results are discussed in the context of food selectivity in autism, programming goals, and balancing intervention efficacy and restrictiveness.

In recent years, the accounting profession has faced increased scrutiny because of scandals involving management fraud (e.g., Enron, WorldCom). In response, Statement on Auditing Standards (SAS) #99 has expanded auditors' responsibility for detecting fraud, requiring auditors to gather significantly more information in their assessment of fraud. In addition, the Public Company Accounting Oversight Board (PCAOB) will focus on fraud detection through their inspections of registered accounting firms. In light of the increased emphasis on auditors' responsibility for detecting fraud, public accounting firms face the challenge of improving their fraud detection process, including their assessment of management fraud risk. Decision aids are one way for auditors to improve their assessment of management fraud risk. In fact, several studies from the decision aid literature suggest that aids are useful tools for a variety of tasks, including fraud risk assessment. At the same time, another stream of the decision aid reliance literature, which looks at people's willingness to rely on decision aids, suggests that individuals tend to be reluctant to accept the output given by an aid. Thus, the primary focus of this paper is on uncovering factors that would encourage one to voluntarily use and rely upon a decision aid. Toward that …

This study describes the experiences of doctoral students in education at Historically Black Colleges and Universities (HBCUs). The study focused only on the 14 HBCUs that offer doctoral degrees in education. Twelve of the 14 eligible institutions agreed to participate in the study. A total of 47 doctoral students who were in their third year of study or close to completion participated in the study. These doctoral students completed a survey that was utilized in a national study of doctoral students at predominately white institutions and Ivy League institutions conducted by Golde and Dore in 2001. The purpose of this study was to determine if doctoral students in education at HBCUs are receiving a quality education and if they are being adequately prepared for their careers. This study offers 368 findings from which the doctoral experience in education at HBCUs can be comprehensively evaluated. It was determined that doctoral students in education at HBCUs do receive a quality education and are being effectively prepared for their careers.

Abstract This dissertation investigates authentication techniques in some emerging areas. Specifically, authentication schemes have been proposed that are well-suited for embedded systems, and privacy-respecting pay Web sites. With embedded systems, a person could own several devices which are capable of communication and interaction, but these devices use embedded processors whose computational capabilities are limited as compared to desktop computers. Examples of this scenario include entertainment devices or appliances owned by a consumer, multiple control and sensor systems in an automobile or airplane, and environmental controls in a building. An efficient public key cryptosystem has been devised, which provides a complete solution to an embedded system, including protocols for authentication, authenticated key exchange, encryption, and revocation. The new construction is especially suitable for the devices with constrained computing capabilities and resources. Compared with other available authentication schemes, such as X.509, identity-based encryption, etc, the new construction provides unique features such as simplicity, efficiency, forward secrecy, and an efficient re-keying mechanism. In the application scenario for a pay Web site, users may be sensitive about their privacy, and do not wish their behaviors to be tracked by Web sites. Thus, an anonymous authentication scheme is desirable in this case. That is, a …

In response to a growing teacher shortage, increasing numbers of secondary teachers are prepared through streamlined certification programs. For this reason, assessing candidates' content area knowledge gained from institutions of higher education across the United States is an important program admission factor as candidates must demonstrate content area knowledge by passing a Texas content area certification test (TExES). This study examines content knowledge for candidates enrolled in an online post­-baccalaureate program from September 1, 2002 through April 30, 2005. Academic transcript analysis and grades 8-­12 subject tests of the TExES were used as a proxy for subject matter knowledge for a sample of individuals seeking initial teacher certification in a post­-baccalaureate teacher certification at the University of North Texas. Descriptive data,linear regression, and logistic regression analyses were used to draw conclusions about the content area knowledge of the individuals in the sample. Scores on the TExES were used to determine the relationships between the content area knowledge of initial certification students and the number of content area courses completed, the grade point averages, and time elapsed between the completion of the last content area course and the student's initial attempt on the TExES. Results differed by the content area of …

The purpose of this research was to manipulate the component of confidence found in Keller's ARCS model to enhance the confidence and performance of undergraduate students enrolled in an online course at a Texas university using SAM 2003 software delivery. This study also tested whether the aforementioned confidence tactics had any unintentional effect on the remaining attention, relevance, and satisfaction subscales of the ARCS model as well as on learners' overall motivation for the class and the instructional materials. This study was conducted over a 5.5-week period with an initial sample of 81 total students. Two quantitative surveys were used to measure confidence and motivation: (a) the Course Interest Survey (CIS), and (b) the Instructional Materials Motivation Survey (IMMS). The results indicated that the treatment group showed statistically greater gains than the control group in terms of learner confidence on the CIS but not the IMMS. In terms of performance, the treatment group outperformed the control group on all of the individual posttest measures and on the overall aggregate mean performance score. The results showed no statistically significant difference on the attention subsection of the ARCS model. However, statistically significant differences were noted for the relevance and satisfaction subscales of …

This study compared strategy use and beliefs about language learning, and the relationship between beliefs and use reported by 428 monolingual Korean and 420 bilingual Korean-Chinese university students. This study also examined the influence of background variables (e.g., gender, self-rated English proficiency, and academic major) on learners' beliefs and strategy use. Data was collected using three questionnaires, the Strategy Inventory for Language Learning (SILL), the Beliefs about Language Learning Inventory (BALLI), and the Individual Background Questionnaire (IBQ). Data were analyzed using descriptive analyses, principal-component analyses, factor analyses, Pearson r correlation analyses, multivariate analysis of variance (MANOVA), and the Scheffé post-hoc test. Monolinguals reported using compensation strategies most, followed by cognitive, metacognitive, memory, social/practical practice, and affective strategies. Bilinguals preferred to use cognitive strategies most, followed by metacognitive and affective, compensation, memory, social, and independent practice strategies. Students from both groups reported low use of social and memory strategies. Despite a less favorable formal English education environment in the Korean-Chinese community and fewer English learning experiences, bilingual Korean-Chinese reported higher use of learning strategies, which indicates bilinguals' superior language learning abilities. Students from both groups had strong instrumental motivation for learning English. Bilinguals held stronger beliefs about the importance of formal …

Research has linked rape victim-blaming attitudes (VBAs) with gender role stereotyping, negative peer attitudes towards women, and acceptance of interpersonal violence. The current study analyzed longitudinal questionnaire data of college men (n=166) from White and Smith's (2001) study of college student victimization. Results indicate that VBAs can be conceptualized as either overt or covert, and that the covert VBA was more strongly correlated with alcohol use, sexualized peer attitudes, traditional gender stereotypes, need for sexual dominance, and perpetration of dating aggression. The covert VBA was also correlated with rape proclivity one year later, and partially mediated relationships between earlier variables and later rape proclivity. Additionally, endorsement of chivalry moderated the relationship between traditional gender stereotypes and the covert VBA, casting new perspective on the role of chivalry. Overall, results demonstrate the importance of targeting subtle expressions of VBAs in educational programs, and the need for longitudinal studies on rape attitude development.

Partial order planning is an important approach that solves planning problems without completely specifying the orderings between the actions in the plan. This property provides greater flexibility in executing plans; hence making the partial order planners a preferred choice over other planning methodologies. However, in order to find partially ordered plans, partial order planners perform a search in plan space rather than in space of world states and an uninformed search in plan space leads to poor efficiency. In this thesis, I discuss applying a reinforcement learning method, called First-visit Monte Carlo method, to partial order planning in order to design agents which do not need any training data or heuristics but are still able to make informed decisions in plan space based on experience. Communicating effectively with the agent is crucial in reinforcement learning. I address how this task was accomplished in plan space and the results from an evaluation of a blocks world test bed.

I start writing by conjuring up an image in my mind. Sometimes it will be something that I have thought about for a while, sometimes it will be something that I sit around attempting to create. Either way, it is simply the idea that I need in order to get started. People will say, "Just sit down and write" which I can do, but it does not mean I will end up anywhere worthwhile. In my writing I need a focus. I need an idea or just one image to get me writing and I can base an entire story off of that one image. I think the reason this works for me is because in my mind it is an illustration and always something that is vibrant and unique. I want the image to stand out and to mean something because I feel that it comes to me for a specific reason, I just have to piece it all together and let the characters and plot unfold for themselves. People often say this, that the characters end up running the story. I think this is true, but in my case my stories are not so driven by character or …

This study examined differences in scoring patterns among those diagnosed with Alzheimer's dementia and vascular dementia on the clock-drawing test. Archival clock drawing data was retrieved on 279 patients presenting at a county hospital-based memory clinic. Analysis of drawings was based on frequency of qualitative errors, as well as an overall quantitative score. Mean comparisons found those patients with Alzheimer's dementia to perform worse on both quantitative and qualitative scoring measures. However, Pearson's chi-squared test revealed a significantly higher rate of spacing errors among subjects with vascular dementia. Such lends support to my hypothesis that impaired executive functioning in vascular dementia patients would lead to poor qualitative performance. Logistic regression found significant predictive ability for the qualitative criteria in diagnosis (χ2 = 25.49, p < .001), particularly the rate of omission (z = 8.96, p = .003) and addition errors (z = 7.58, p = .006). Such findings hold important implications for the use of qualitative criteria in cognitive screening assessments.

Tree diameter data from 29 years of observations in six permanent plots was used to calculate the growth rate parameter of the FACET gap model for 39 species in the Imataca forests in Venezuela. The compound topographic index was used as a measure of differential soil water conditions and was calculated using geographic information systems. Growth rate values and topographic conditions typical of hill and valley were input to FACET to simulate dynamics at the species level and by ecological and functional groups. Species shade-tolerance led to expected successional patterns. Drought-tolerant/saturation-intolerant species grew in the hills whereas drought-intolerant/saturation-tolerant species occurred in the valleys. The results help to understand forest composition in the future and provide guidance to forest management practices.

The Texas high school class of 2005 faced a defining test that had no precedent in Texas and little nationally. Social studies testing is a relatively new addition to the world of high stakes testing currently impacting United States high schools. Although other diploma dependent areas of mandated testing have some testing history and, therefore, related paradigms for curriculum and instructional assistance, the area of social studies largely lacks that perspective. Texas Education agency provided specific school grant monies and training for the purpose of preparation for the social studies exams. This quasi-experimental study examines the scores to learn whether or not any statistically significant differences in social studies scores would exist between the schools that participated in the TEKS/Tools Training Program and the schools that did not participate in the TEKS/Tools Training Program. The two primary at-risk groups in Texas, Hispanic and low SES, were analyzed for statistically significant differences in scores. Independent t tests and ANCOVA were used to analyze the score differences between program schools and non-program schools. Results relate to individual school staffing and implementation. The at-risk groups remained flat in score gains whether they were part of the program schools or not. Results relate to …

Opto-electronic semiconductor technology continues to grow at an accelerated pace, as the industry seeks to perfect devices such as light emitting diodes for purposes of optical processing and communication. A strive for greater efficiency with shrinking device dimensions, continually pushes the technology from both a design and materials aspect. Nanosystems such a quantum dots, also face new material engineering challenges as they enter the realm of quantum mechanics, with each system and material having markedly different electronic properties. Traditionally, the semiconductor industry has focused on materials such Group II-VI and III-V compounds as the basis material for future opto-electronic needs. Unfortunately, these material systems can be expensive and have difficulties integrating into current Si-based technology. The industry is reluctant to leave silicon due in part to silicon's high quality oxide, and the enormous amount of research invested into silicon based circuit fabrication. Although recently materials such as GaN are starting to dominate the electro-optical industry since a Si-based substitute has not been found. The purpose of the dissertation was to examine several promising systems that could be easily integrated into current Si-based technology and also be produced using simple inexpensive fabrication techniques such ion implantation. The development of optically active …

This study provides a detailed description of revenue and expenditure patterns of the United States community college by state and by institutional type (rural-, suburban-serving, and urban-serving) for each five-year period from 1980-81 to 2000-01. The Katsinas, Lacey, and Hardy classification schema for community colleges is used to analyze data from the National Center for Education Statistics' Integrated Postsecondary Educational Data System (IPEDS) and Higher Education General Information Surveys (HEGIS). Further analysis clusters states into the following groupings: states with/without substantial local funding, large "mega-states" versus all other states (employing the methodology developed by Grapevine at Illinois State University), and the structure of state coordination (as developed by Tollefson and others in their studies of state community college systems). The analysis showed wide differences in the various funding patterns for community colleges as related to revenue streams. As late as 1980-91, 16 states contributed 60% or more of the total budgets for their community colleges; by 2000-01, no state did so. By college type, rural-serving community colleges saw the greatest net negative change in their operating budget margins, from 3.2% to 0.4%, although it should be noted that every one of the community college types also experienced a significant decline …

The purpose of this study was to determine if any statistically significant difference exists between the self-efficacy scores of student teachers who began their college experience at the community college level and student teachers who began their education at the university level. The study was used to determine whether or not the type of initial college experience impacted the first two years of college study, in relation to the development of a sense of self-efficacy at the end of the program of study. Self-efficacy data were gathered from beginning student teachers at two comparative institutions. The participants were enrolled in the colleges of education at two large metropolitan universities. One university was located in southern Texas and the other was located in north central Texas. The Teachers' Sense of Efficacy Scale was the instrument used, as well as a researcher-made questionnaire that collected demographic data. In addition to pattern of education, other independent variables included age, gender, ethnicity, certification level sought by the participant, and the number of contact hours spent by the participant in early field experiences in K-12 classrooms. A multiple regression analysis indicated no statistically significant difference in the composite score of the Teachers' Sense of Efficacy …

In a time of laissez-faire government, monopolistic businesses and political debauchery, William Andrews Clark played a significant role in the developing West, achieving financial success rivaling Jay Gould, George Hearst, Andrew Carnegie, and J. P. Morgan. Clark built railroads, ranches, factories, utilities, and developed timber and water resources, and was internationally known as a capitalist, philanthropist and art collector. Nonetheless, Clark is unjustly remembered for his bitter twelve-year political battle with copper baron Marcus Daly that culminated in a scandalous senatorial election in January 1899. The subsequent investigation was a judicial travesty based on personal hatred and illicit tactics. Clark's political career had national implications and lasting consequences. His enemies shaped his legacy, and for one hundred years historians have unquestioningly accepted it.

Positive psychology has become influential in research and practice. However, some have criticized positive psychologists who focus solely on the virtues of being positive. A tyrannical pressure to be positive may potentially exist in positive psychology, as well as mainstream United States culture. The following study explored perceptions of this theory using focus groups of individuals who differed in coping style, social desirability, and depression. Results suggest that individuals are affected by social pressures to be positive, and the expression of both positive and negative emotions is determined by social pressures, rules, context, and consequences. Although emotional expression, especially negativity, is contraindicated in several social contexts, there are also social, psychological, and physical benefits to all types of emotional expression.

This essay investigates the relationship between trance and various musical and poetic expressions that accompany trance when it is interpreted as sacred. In other words, the aim of this investigation is to interpret how experiences of the entrancing power of the sacred come to expression with the sounds of music and poetry. I articulate such an interpretation through the following four sections: I) a discussion of the basic phenomenological and hermeneutic problems of interpreting what other people experience as sacred phenomena, II) an account of the hermeneutic context within which modern Western discourse interprets trance as madness that perverts the rational limits of the self, III) an interpretation of the expressions of trance that appear in the poetry of William Blake, and IV) an interpretation of expressions of trance that appear in the music of Afro-Atlantic religions (including Vodu in West Africa, Santería in Cuba, and Candomblé in Brazil).

The teacher professional development component of the will, skill, tool model of technology integration was tested for predictive validity in the cross-cultural context of data from Texas, USA, and data from Mexico City, Mexico. Structural equation modeling (SEM) analysis, path analysis, and multiple regression analysis, were statistical procedures employed. The analyses yielded positive results for the model's validity and reliability. The resulting model was found to be a reliable tool to evaluate technology integration among elementary and middle school teachers in Texas and in Mexico City. For the purposes of this study, the teacher professional development component of the will, skill, tool model of technology integration is referred to as the will, skill, tool model of technology integration (WiSTTI). This was one of the seven alternative models tested for goodness of fit across a total of 7 data samples. The structural equation modeling approach proved to be a good technique to find the best fit model in a cross-cultural environment. Latent variables and a set of parameters to judge the validity and reliability of each model were set for testing and retesting in an iterative process. Eventually a "new" modified version of the WiSSTI model was found to fit the …

Missa Papae Marcelli: A Comparative Analysis of the Kyrie and Gloria Movements of Giovanni Pierluigi da Palestrina and an Adaptation by Giovanni Francesco Anerio

The problem addressed is to ascertain how selected factors impacted the adjustment of undergraduate university students. Undergraduate university students (n=382) from the University of North Texas completed measures of basic student information, perceived level of family support and level of parental attachment, and perceived level of college student adjustment. Parental Attachment and Family Support were found to positively correlate to the level of adjustment to college. Analyses of these data reveal a statistically significant difference in student adjustment to college when comparing the participants by age, university classification, and living arrangement. Further analysis reveals that there is a statistically significant difference between gender, race, students' marital status, and parents' marital status when measuring the outcome of perceived family support. Perceived level of parental attachment differs significantly when comparing students by their race, marital status, and their parents' marital status.

Undergraduate enrollment in colleges and universities has grown and changed drastically over the past 2 decades, with a significant portion of this growth coming from the increased number of nontraditional students who have made the decision to make their way onto college and university campuses to pursue a college degree. Due to these changes, many institutions of higher education have had to rethink the way they have historically operated. In an attempt to better meet the needs and demands of adult nontraditional students, colleges and universities have reviewed their existing programs and instituted programs that allow for the awarding of academic credit for prior learning. For those institutions of higher education involved in the prior learning assessment (PLA) process and interested in providing a quality program, an increased emphasis and focus should be on the importance of determining what a learning activity is, and more importantly, what constitutes college-level learning. This study focused on the identification and profiling of prior learning assessment (PLA) processes in Texas public universities offering nontraditional baccalaureate degree programs, the identification of commonalties among such programs, and the determination of program quality based on established standards. The instrument utilized in this study was designed on Urban …

In the eyes of the American public excellence is often overshadowed by brilliance of personality. This is particularly true in the portrayal of many of the country's military leaders in World War II. A prime example of this phenomenon is Douglas MacArthur, whose larger than life persona made him a newspaper fixture during the war despite a series of strategic and tactical blunders that would have led to the sacking of a less visible (and publicly popular) leader. At the level of divisional commanders, this triumph of brilliance over excellence is best exemplified by the two primary leaders of the country's 1st Infantry Division, Terry de la Mesa Allen and Clarence R. Huebner. One was a hard-drinking, swashbuckling leader who led by almost the sheer force of his personality; the other, a plain spoken, demanding officer who believed that organization, planning and attention to detail were the keys to superior battlefield performance. The leadership differences between Allen and Huebner have been documented in multiple publications. What has not been documented is the life of the truly overshadowed general - Huebner. Huebner's transition to the leadership of the 1st Infantry Division (1st ID) constitute only a small period in a military …