Search Results

A Comparison of Academic Achievement of Economically Disadvantaged Elementary Students Served in Title I Part A Programs: Targeted Assistance Versus Schoolwide Models

Description: This study analyzed test scores of economically disadvantaged students who attended two elementary schools implementing different types of Title I models from 1999-2001. Test scores from the Texas Assessment of Academic Skills (TAAS), the Iowa Test of Basic Skills (ITBS) and the Stanford Achievement Test (SAT-9) were analyzed. One school implemented the targeted assistance model (less than 50% poverty), which focused resources on students were identified as failing or at risk of failing. The other a schoolwide model (95% poverty), which used resources to help all students in a school regardless of whether they ware failing, at risk of failing, or economically disadvantaged. The quantitative approach was used with a causal comparative design. A cohort of continuously enrolled students was identified for the TAAS (n=169 and 189) and the ITBS/SAT-9 (n=49 and 87). Descriptive statistics such as the frequency, mean, and standard deviation, were used to measure differences on the Texas Learning Index (TLI) for the TAAS, and Normal Curve Equivalent (NCE) on the ITBS/SAT-9. Analysis of covariance (ANCOVA) was used to partially adjust for preexisting differences among the groups and because randomization was not possible. The independent variable was type of Title I model, targeted assistance or schoolwide. The dependent variable was the achievement measure, and the covariate was the initial achievement scores in third grade (pretest). The ANCOVA reports and descriptive statistics showed that economically disadvantaged students performed better in reading and math on TAAS and ITBS/SAT-9 at the targeted assistance school in 1999 and 2001, with mixed results in 2000. The academic performance of economically disadvantaged students at the targeted model was consistent all three school years. They scored slightly lower than the non-economically disadvantaged students, but higher than their peers at the schoolwide model. The students' third grade pretest score was the most significant predictor of …
Date: May 2005
Creator: Hinojosa, Marco A.
Partner: UNT Libraries

Taken In

Description: Taken In is a collection of poems about coming to terms with death, love, and the social responsibilities people owe to each other.
Date: May 2005
Creator: Levan, Michael Jon
Partner: UNT Libraries

An integrative investigation of person-vocation fit, person-organization fit, and person-job fit perceptions.

Description: Person-environment (PE) fit has been considered one of the most pervasive concepts in psychology. This study presents an integrative investigation of three levels of PE fit: person-vocation (PV) fit, person-organization (PO) fit, and person-job (PJ) fit, using multiple conceptualizations (e.g., value congruence, needs-supplies fit) of each fit level. While a trend in the PE fit literature has been the inclusion of only one fit level with a single conceptualization, researchers call for the addition of multiple conceptualizations of multiple fit levels in a single study. Traditionally, PO fit has been conceptualized as value congruence, whereas PV fit has remained untouched in the literature investigating the direct measurement of fit perceptions. Therefore, new fit perceptions scales assessing PO fit using a needs-supplies fit conceptualization and PV fit using a variety of conceptualizations were introduced. To address the limitation of employing direct measures, common method variance was modeled with a positive affect factor. The study accomplished two objectives. First, a previously supported three-factor model of fit perceptions consisting of PO value congruence (PO-VC), PJ needs-supplies (PJ-NS), and PJ demands-abilities (PJ-DA) fit was strongly replicated. Second, this model was expanded by examining additional conceptualizations (needs-supplies, demands-abilities fit, value, personality, and interest congruence) of fit levels (PV, PO, and PJ fit). Results suggested that professionals make distinctions based on both the fit level and fit conceptualization and these fit perceptions uniquely influence their attitudes and behaviors. A six-factor model (PO-VC, PJ-NS, PJ-DA, PO needs-supplies fit [PO-NS], PV demands-abilities fit [PV-DA], and general PV fit) best fit the data. Providing ample evidence of construct validity, PO fit perceptions (PO-VC and PO-NS fit) were related to the organization-focused outcome of organizational identification, whereas the profession-focused outcome of occupational commitment was exclusively predicted by PV fit perceptions (PV-DA and general PV fit). As expected, both needs-supplies fit …
Date: May 2005
Creator: Kennedy, Michael
Partner: UNT Libraries

The implementation of international education in colleges and universities in the state of Texas: A follow-up study.

Description: This study is a follow-up to a study completed by Dr. Thomas Barker in 1994 entitled The Status of the Implementation of International Education in Texas Four-year Colleges and Universities: A Comprehensive Study. A survey of 35 Texas universities and 6 out-of-state benchmark universities revealed information regarding the international programs at these universities in four areas. The four areas surveyed include: (a) administrative, (b) instructional, (c) international student support services, and (d) outreach. A summary of the survey results includes 34 tables detailing the university responses for the 2004 survey compared with the responses obtained from the original, Barker (1994). The results from the 2004 participating benchmark institutions were also reviewed. Texas universities continue to work toward the internationalization of the curriculum with increased numbers supporting an international focus in their mission statements and staffing patterns. Benchmark institutions continue to lead Texas institutions in a majority of areas surveyed. Funding for international education continues to be an issue for both the benchmark and Texas institutions. Changes in attitudes and immigration policies continue to affect the implementation of international programs on the university level. While universities continue to provide support to community and businesses in the area of international education, the extent of this support has decreased in the ten years since the Barker (1994) survey.
Date: May 2005
Creator: Hodges, Sarah
Partner: UNT Libraries

Assessing Allied Health and Nursing Post-Secondary Career and Technical Education Teacher Attitudes and Beliefs About Reading

Description: This study examined allied health and nursing career and technical education (CTE) teacher beliefs and attitudes about reading. Since beliefs and attitudes influence the way teachers teach, it is important to understand what those beliefs and attitudes are, especially in relationship to reading in subject matter classrooms. One hundred twelve individuals responded to a written survey concerning their attitudes and beliefs about reading. A four-factor solution was achieved with a principal components factor analysis. A significant number of variables were associated with the factor labeled Reading Apathy, which appears to be indicative of the condition known as aliteracy among faculty who participated in the study. Professional development activities grounded in novice-to-expert theory are suggested as a way of overcoming the phenomenon. Recommendations for future research involve a more detailed study to further characterize the condition of aliteracy and its impact on student learning.
Date: May 2005
Creator: Moore, Bridgit R.
Partner: UNT Libraries

Reading and Math Outcomes for Incarcerated Youth with Emotional and Behavioral Disorders

Description: Helping youths acquire educational skills is one of the most effective approaches to the prevention of delinquency and reduction of recidivism. Access to a high-quality education is particularly important for the growing number of youth committed to juvenile corrections, especially for those who have been diagnosed with a disability. Research has shown a tremendous gap about the academic outcomes of incarcerated juveniles with emotional disabilities. Thus, the focus of this study was to examine the academic outcomes in reading and math for youth with emotional/behavioral disorders (E/BD) released from Texas Youth Commission (TYC) programs between September 2003 and September 2004. The study examined if the rate of academic growth in reading and math as indicated by pre- and post-test scores on the Test of Adult Basic Education (TABE), are different for youth with E/B as compared to youth with other disabilities and youth without disabilities who were adjudicated in TYC programs.
Date: May 2005
Creator: Monfore, Dorotha Rombuck
Partner: UNT Libraries

Interfacial Study of Copper Electrodeposition with the Electrochemical Quartz Crystal Microbalance (EQCM)

Description: The electrochemical quartz crystal microbalance (EQCM) has been proven an effective mean of monitoring up to nano-scale mass changes related to electrode potential variations at its surface. The principles of operation are based on the converse piezoelectric response of quartz crystals to mass variations on the crystal surface. In this work, principles and operations of the EQCM and piezo-electrodes are discussed. A conductive oxide, ruthenium oxide (RuO2) is a promising material to be used as a diffusion barrier for metal interconnects. Characterization of copper underpotential deposition (UPD) on ruthenium and RuO2 electrodes by means of electrochemical methods and other spectroscopic methods is presented. Copper electrodeposition in platinum and ruthenium substrates is investigated at pH values higher than zero. In pH=5 solutions, the rise in local pH caused by the reduction of oxygen leads to the formation of a precipitate, characterized as posnjakite or basic copper sulfate by means of X-ray electron spectroscopy and X-ray diffraction. The mechanism of formation is studied by means of the EQCM, presenting this technique as a powerful in-situ sensing device.
Date: May 2005
Creator: Ojeda Mota, Oscar Ulises
Partner: UNT Libraries

Twenty-five years of Scholarship: A Sociology of The Review of Higher Education Contributors, 1977-2002

Description: Given today's hurried pace of change in higher education and its institutions, it is imperative for the higher education research community to reflect on its current composition and resulting ability to understand and respond to the breadth and rapidity of that change. Accordingly, the purpose of this study was to identify selected social and academic characteristics of the primary contributors (authors, editorial board members, and editors) to The Review of Higher Education, to categorize institutional affiliations of contributors via the Carnegie Classification System and to synthesize the data in a historical and sociological perspective. The contributions to The Review's articles, editorial board positions, and editorships in its first 25 years have predominantly been from male members of the higher education professoriate affiliated with and receiving doctoral degrees from major research universities ranked highest in the Carnegie Classification System. Trends toward greater gender and disciplinary representation, especially among author contributors, began to appear by the mid-point (1990s) of the study period.
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Date: August 2005
Creator: Moss, Ron W.
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Generalized identity matching in the pigeon: Effects of extended observing- and choice-response requirements.

Description: Four experimentally naïve white Carneau pigeons learned to match three colors to each other in a variant of an Identity matching-to-sample procedure with an FR20 on samples and a response-initiated FI8-s on comparisons. In Experiment 1, the extent to which subjects were matching on the basis of identity was assessed by presenting, in extinction, test trials comprising novel stimuli serving as the sample (and matching comparison) or as the nonmatching comparison. The results from Experiment 1 suggested intermediate or little to no transfer on the basis of identity. Experiment 2 reassessed transfer on the basis of identity with differential reinforcement on the test trials. Under these conditions, two of the four birds demonstrated substantially better than chance levels of performance. These data imply that while the extended response requirements may be necessary, other procedural aspects may be responsible for generalized identity matching in the pigeon.
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Date: August 2005
Creator: Hayashi, Yusuke
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Burn and Sow: The Ethical Implications of Ecological Restoration

Description: Ecological restoration is quickly becoming a major approach to how humans interact with the natural world. Some view restoration as another land management technique on par with conservation and preservation. Others view it as a way to make reparations for our misdeeds and to reincorporate humans into the natural world. Ideas regarding restoration from key academics and restorationists are evaluated here. Their views have set the stage for the contemporary paradigm. Values that may be attributed to restoration and received from it are evaluated. I discuss my own reservations regarding potential problems with the product and practice of restoration. What is at stake regarding the involvement of people in restoration is examined, focusing on the different impacts volunteers and paid workers have on the value of the practice and outcome of the product.
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Date: August 2005
Creator: Mauritz, Elizabeth
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Determination of Habitat Preferences of Pronghorn (Antilocapra americana) on the Rolling Plains of Texas Using GIS and Remote Sensing

Description: The Rocker b Ranch on the southern Rolling Plains has one of the last sizeable populations of pronghorn (Antilocapra americana) in Texas. To investigate habitat utilization on the ranch, pronghorn were fitted with GPS/VHF collars and were released into pastures surrounded by a variety of fences to determine how fence types affected habitat selection. Habitat parameters chosen for analysis were vegetation, elevation, slope, aspect, and distances to water, roads, and oil wells. Results showed that pronghorn on the ranch crossed modified fencing significantly less than other types of fencing. Pronghorn selected for all habitat parameters to various degrees, with the most important being vegetation type. Habitat selection could be attributed to correspondence of vegetation type with other parameters or spatial arrangements of physical features of the landscape. Seasonal differences in habitat utilization were evident, and animals tended to move shorter distances at night than they did during daylight hours.
Date: May 2005
Creator: Aiken, Robin A.
Partner: UNT Libraries

Treatment Outcomes Related to EEG-Biofeedback for Chemical Dependency: Changes in MMPI-2™ (University of Minnesota) Personality Measures and Long Term Abstinence Rates

Description: Peniston and Kulkosky (1989, 1990) demonstrated the effectiveness of alpha-theta EEG-Biofeedback (EEG-BFB) in treating inpatient alcoholics noting significant improvements in depression, psychopathology, serum β-endorphin levels, and abstinence rates. The present study is an extension of a previously unpublished replication of the Peniston EEG-BFB protocol with 20 chemically dependent outpatients (Bodenhamer-Davis, Callaway, & DeBeus, 2002). Fifteen subjects were "high risk for re-arrest" probationers. Data for the EEG-BFB group was collected from archival records. Subjects completed an average of 39 sessions (SD = 6.096), with 33 of those being EEG-BFB. Pre/post-treatment MMPI-2s™ (University of Minnesota) were collected and follow-up (4-11 years) data obtained (abstinence rates, re-arrests in some cases). Treatment effects were evaluated by comparing assessment data (pre/post) and documenting abstinence rates. Post-treatment MMPI-2 results were within normal limits, with several scales significantly reduced from baseline suggesting less psychopathology. Results were then compared to 20 subjects receiving standard addiction treatment (OT-CD group), but not EEG-BFB. OT-CD subjects completed a 2-week inpatient program followed by 18 outpatient sessions. Pre/post assessment and follow-up data was collected on the OT-CD group. The OT-CD group's post-assessment results showed three elevations (MMPI-2 scales 4/6/8), suggestive of characteriological problems. Post-MMPI-2 results of the two groups were compared via ANCOVAs. Findings indicated no significant differences between groups on targeted scales; however, there was a trend for the EEG-BFB group to have lower scores. Follow-up data was obtained on 13 EEG-BFB subjects. Results indicated 92% (n = 12) were sober, with 8% (n = 1) claiming significantly reduced alcohol intake. Probationer re-arrest and revocation rates were collected on the subset of probationers (n = 14 out of 15). The majority of the probationers (79%, n = 11) had not been re-arrested nor had their probation been revoked. Short-term follow-up information (35-131 days post-assessment), available at the time of writing, for …
Date: May 2005
Creator: Callaway, Tonya Gayle
Partner: UNT Libraries

Charge Interaction Effects in Epoxy with Cation Exchanged Montmorillonite Clay and Carbon Nanotubes.

Description: The influence of charge heterogeneity in nanoparticles such as montmorillonite layered silicates (MLS) and hybrid systems of MLS + carbon nanotubes was investigated in cured and uncured epoxy. Epoxy nanocomposites made with cation-exchanged montmorillonite clay were found to form agglomerates near a critical concentration. Using differential scanning calorimetry it was determined that the mixing temperature of the epoxy + MLS mixture prior to the addition of the curing agent critically influenced the formation of the agglomerate. Cured epoxy samples showed evidence of the agglomerate being residual charge driven by maxima and minima in the concentration profiles of thermal conductivity and dielectric permittivity respectively. A hybrid nanocomposite of MLS and aniline functionalized multi walled nanotubes indicated no agglomerates. The influence of environmentally and process driven properties on the nanocomposites was investigated by examination of moisture, ultrasound, microwaves and mechanical fatigue on the properties of the hybrid systems. The results point to the importance of charge screening by adsorbed or reacted water and on nanoparticulates.
Date: May 2005
Creator: Butzloff, Peter Robert
Partner: UNT Libraries

A Drop of Oil

Description: Many Christian writers point to God through their fiction without openly evangelizing. The images their words evoke lift their secular and religious readers' heads, for God is reflected in their use of language, the emotions they describe, and the actions of their characters. The preface and short stories in this collection aim to show that God's presence can be felt even when people are suffering due to human decisions and mistakes. He is with His creations in the midst of their pain to impart hope when they need it most.
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Date: May 2005
Creator: Bullman, Carol
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Documentary Film: I Named Her Angel

Description: Recent political developments in the world show us that different cultures need to know and understand each other better. Even though technological developments like the Internet, satellites, cable television and conglomeration of big media entities have made mass communication more effective and faster, we cannot easily say that these developments help to bring world cultures together. As a result, mass audiences are not very much able to see what few productions do speak to these issues in a constructive manner. The main aim of this documentary film project is to serve as a small step towards helping different cultures to understand each other better. This documentary film conveys the basics of Mevlevism by following the formal gatherings of a Mevlevi den in Istanbul, Turkey. A den or tekke is a place where Islamic people gather and perform their religious activities. During these gatherings they do the sema, they pray, they listen to music, and they discuss spiritual matters. Sema is the entire ritual they perform as part of their ceremonies including listening to music, singing and chanting to attain a state of religious emotion and ecstasy or vecd. The documentary film is structured around a twelve year old girl, Elif, who is learning the basics of Mevlevism. The interviews conducted with regulars from the den explain to the audience why people are attracted to this belief system. Filming the ceremonies at the 550-year-old Mevlevi temple in Galata, Istanbul accentuates the historic background of this belief system. The Night of Reunion is the day in which Mevlevis celebrate the passing of Mevlana Celaleddin Rumi, the founder of Mevlevism and provides the climax of the film. Elif performs on that night, a very important moment in her spiritual life.
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Date: May 2005
Creator: Dinc, Nefin
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Effects of a Trained Therapy Dog in Child-Centered Play Therapy on Children's Biobehavioral Measures of Anxiety

Description: This study was concerned with reducing children's anticipatory anxiety when entering mental health services for the first time. The purpose of this study was to determine whether combining two effective modalities, play therapy and animal-assisted therapy, would be effective in decreasing children's biobehavioral measurements of anxiety. Specifically, this study examined the effects of the presence of a trained therapy dog during one individual 30-minute play therapy session. The experimental group consisted of 26 children who received one individual 30-minute play therapy session with the presence of a trained therapy dog. The comparison group consisted of 25 children who received one individual 30-minute play therapy session without the presence of a trained therapy dog. The SenseWear® PRO 2 armband monitor measured children's biobehavioral measurements such as galvanic skin response, temperature, and activity level (BodyMedia, Inc., Pittsburgh , PA , www.bodymedia.com). The Tanita 6102 Cardio® digital heart rate monitor measured children's pre-treatment and post-treatment heart rates (Tanita Corporation of America, Inc., Arlington Heights , IL , www.tanita.com). Five hypotheses were tested using repeated measures ANOVA with mixed factors and eta squared. All five hypotheses in this study were retained based on statistical significance at the .05 level. The combination of child-centered play therapy (CCPT) and animal-assisted therapy was shown to have little practical significance in decreasing children's first 5-minute biobehavioral measurements, middle 5-minute biobehavioral measurements, last 5-minute biobehavioral measurements as measured by the SenseWear Pro 2 armband monitor. The combination of CCPT and animal-assisted therapy was shown to have little practical significance in decreasing children's pre-treatment and post-treatment heart rate. The results of the two factor repeated measures analysis of variance with mixed factors were not statistically significant. Although, research has shown that play therapy is an effective modality in reducing children's anxiety over time, children's anticipatory anxiety was increased in the …
Date: May 2005
Creator: Athy, Annette L.
Partner: UNT Libraries

Public safety curricula in American community colleges: Programs, problems, and prospects.

Description: This study explored public safety programs in publicly controlled American community colleges. The need for accurate and complete information in an era of homeland security and defense is paramount as government, education, the private sector, and the citizenry interact to ensure a safer nation. The general purposes of this study were to compile current descriptive information on public safety programs and curricula in America's publicly controlled community colleges, and to identify problems and prospects inherent in the administration of these programs. Information is critical as community colleges continue to struggle with decreased funding and seek alternative sources of revenue. Community colleges represent a tremendous network for course delivery, such as homeland security training, but struggle to obtain the attention or the funding from the federal government. A review of pertinent literature provided the foundation of a 100-item survey questionnaire that was mailed to a random sample of 200 public safety administrators at American community colleges. The study also included a review of archival data to further describe the programs. Of the 200 instruments sent, 97 (48.5%) were completed, returned, and useable. From the literature, the survey results, and the archival data, a comprehensive list of community colleges with public safety programs was constructed. The composition of the curricula was investigated, and problems and prospects were identified. The study includes conclusions and recommendations, which were based on all sources of information used in the study.
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Date: August 2005
Creator: Phillips, Ted P.
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Assessing Optimal Sibling Training Conditions: An Empirical Approach.

Description: The purpose of the study was to investigate the effects of play materials on the interactions between a child with autism and her sibling. Three conditions were assessed: open choice, materials chosen by the child with autism, and materials chosen by the typically developing sibling. Within each activity, measures of social interactions were assessed. Results of the assessment showed that more interactions occurred with a material chosen by the child with autism. After sibling training (targeting specific teaching skills), social interactions remained highest in the condition with materials chosen by the child with autism. The results are discussed in terms of a material assessment to optimize sibling training conditions and the importance of sibling relationships.
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Date: August 2005
Creator: Merker, Stephanie K.
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Impaired virulence factor production in a dihydroorotate dehydrogenase mutant (pyrD) of Pseudomonas aeruginosa.

Description: Previous research in our laboratory showed that when knockout mutations were created in the pyrB and pyrC genes of the pyrimidine pathway in Pseudomonas aeruginosa, not only were the resultant mutants auxotrophic for pyrimidines but they were also impaired in virulence factor production. Such a correlation had not been previously reported for P. aeruginosa, a ubiquitous opportunistic pathogen in humans. In an earlier study it was reported that mutants blocked in one of the first three enzymes of the pyrimidine pathway in the non-pathogenic strain P. putida M produced no pyoverdin pigment while mutants blocked in the later steps produced copious amounts of pigment, just like the wild type. This study probed for the same connection between pyrimidine auxotrophy and pigment production applied in P. aeruginosa. To that end a knockout mutation was created in pyrD, the fourth step in the pyrimidine pathway which encodes dihydroorotate dehydrogenase. The resulting mutant required pyrimidines for growth but produced wild type pigment levels. Since the pigment pyoverdin is a siderophore it may also be considered a virulence factor, other virulence factors were quantified in the mutant. These included casein protease, hemolysin, elastase, swimming, swarming and twitching motility, and iron binding capacity. In all cases these virulence factors were significantly decreased in the mutant. Even supplementing with uracil did not attain wild type levels. Starvation of the pyrimidine mutant for uracil caused increased specific activity of the pyrimidine enzymes, suggesting that regulation of the pyrimidine pathway occurred at the level of transcription. This effect has also been reported for P. oleovorans. The present research consolidates the idea that pyrimidine auxotrophs cause decreased pathogenicity in P. aeruginosa. Such a finding may open the search for chemotherapy targets in cystic fibrosis and burn victims where P. aeruginosa is an infecting agent.
Date: December 2005
Creator: Ralli, Pooja
Partner: UNT Libraries

The theory of planned behavior and adherence to a multidisciplinary treatment program for chronic pain.

Description: The primary objective of this study was to examine the association between the theory of planned behavior (TBP) and adherence to a multidisciplinary pain center (MPC) treatment program for chronic pain. While the results of several studies have provided support for the efficacy of MPC treatment in chronic pain, the problems of adherence and attrition are important. TPB is a cognitive/social model of behavior that has been used to predict a variety of behaviors, although it has never been used to predict adherence to a multidisciplinary chronic pain treatment program. It was predicted that Adherence would be predicted by Intentions and that Intentions would be predicted by 1) Perceived Social Norms, 2) Perceived Behavioral Control, 3) Attitudes Toward New Behavior (completing the treatment program), and 4) Attitude Toward Current Behavior (maintaining current treatment and coping strategies). It was found that the total Intentions scores did not predict the total Adherence scores. However, Intentions was predicted by 1) Perceived Behavioral Control, 2) Attitudes Toward New Behavior (completing the treatment program), and 3) Attitude Toward Current Behavior (maintaining current treatment and coping strategies). The finding that Perceived Social Norms did not predict Intentions was consistent with results of previous studies with the TBP. The secondary objective was to examine the extent to which MPC treatment affects patients' attitudes towards behaviors that are associated with successful pain management. The majority of the patients (82%) developed a more favorable attitude toward the program and their average report of the importance of the program was 6.78 on a 10-point scale. The majority of patients (74%) reported experiencing a greater decrease in pain than expected, and the average amount of pain decrease was 5.39 on a 10-point scale.
Date: December 2005
Creator: Rogers, Randall E.
Partner: UNT Libraries

Pyrimidine Enzyme Specific Activity at Four Different Phases of Growth in Minimal and Rich Media, and Concomitant Virulence Factors Evaluation in Pseudomonas aeruginosa

Description: Pseudomonas aeruginosa is a Gram-negative rod, aerobic, non-fermenting, oxidase positive, pigment producing, and nutritionally versatile bacterium. Infections by P. aeruginosa are the most important cause of morbidity and mortality in immunocompromised patients, given virulence factor production that suppresses antibiotic therapy and promotes persistent infection. This research is the first comprehensive report of the pyrimidine biosynthetic pathway for all phases of growth in minimal and rich media coupled with the evaluation of virulence factor production of P. aeruginosa in comparison to four other bacterial species (Pseudomonas putida, Pseudomonas fluorescens, Burkholderia cepacia, and Escherichia coli wild-type strains). Cellular growth and passing genetic information to the next generation depend on the synthesis of purines and pyrimidines, the precursors of DNA and RNA. The pyrimidine biosynthetic pathway is essential and found in most organisms, with the exception of a few parasites that depend upon the pyrimidine salvage pathway for growth. Both the pyrimidine biosynthetic and salvage enzymes are targets for chemotherapeutic agents. In our laboratory, research on pyrimidine auxotrophic mutants showed the role of the pyrimidine biosynthetic pathway and its intermediates on P. aeruginosa metabolism and impaired virulence factors production. The present research shows that pyrimidine enzymes are active in all phases of growth, including the production of two forms of ATCase in the late log phase in P. aeruginosa. This finding may be explained by the displacement of the inactive PyrC' by the active PyrC or PyrC2 to form a new and larger pyrBC encoded ATCase. Pseudomonas aeruginosa wild-type appears to produce by far the most virulence factors, haemolysin, iron chelation, rhamnolipid, adherence, and three types of motility (swimming, swarming, and twitching) investigated in this study, when compared to the other four wild-type strains. Growth analysis was carried out as typically done in minimal medium but also in rich medium to simulate conditions …
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Date: December 2005
Creator: Azad, Kamran Nikkhah
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Job embeddedness versus traditional models of voluntary turnover: A test of voluntary turnover prediction.

Description: Voluntary turnover has historically been a problem for today's organizations. Traditional models of turnover continue to be utilized in a number of ways in both academia and industry. A newer model of turnover, job embeddedness, has recently been developed in an attempt to better predict voluntary turnover than existing models. Job embeddedness consists of organizational fit, organizational sacrifice, and organizational links. The purpose of this study is to two fold. First, psychometric analyses were conducted on the job embeddedness model. Exploratory factor analyses were conducted on the dimensions of job embeddedness, which revealed a combined model consisting of five factors. This structure was then analyzed using confirmatory factor analysis, assessing a 1, 3, and 5 factor model structure. The confirmatory factor analysis established the use of the 5 factor model structure in subsequent analysis in this study. The second purpose of this study is to compare the predictive power of the job embeddedness model versus that of the traditional models of turnover. The traditional model of turnover is comprised of job satisfaction, organizational commitment, and perceived job alternatives. In order to compare the predictive power of the job embeddedness and traditional model of voluntary turnover, a series of structural equation model analyses were conducting using LISREL. The job embeddedness model, alone, was found to be the best fit with the sample data. This fit was improved over the other two models tested (traditional model and the combination of the traditional and job embeddedness model). In addition to assessing which model better predicts voluntary turnover, it was tested which age group and gender is a better fit with the job embeddedness model. It was found that the job embeddedness model better predicts turnover intention for older respondents and males.
Date: December 2005
Creator: Besich, John
Partner: UNT Libraries

Hierarchy Attenuating/Enhancing Organizational Environments and Intergroup Attitudes: Relationship of Racism, Classism, and Sexism in Multiracial and Monoracial Churches of the United States

Description: As Yancey (2003) has pointed out, the intentional character of racially integrated churches tends to lessen the social distance between Whites and minorities. The purpose of this study is to examine how racially hierarchy-attenuating and hierarchy-enhancing environments affect classism and sexism attitudes among congregations. The finding shows that multiracial churches promote H-A environment for class and race diversity, but not for gender equality. The class and race diversity is affected by organizational structure; on the other hand, gender equality is influenced by theologies. This study finds the answers to this discrepancy from the effect of biblical teachings on classist and sexist attitudes and the cumulative effect of structured domination of women.
Date: December 2005
Creator: Kim, Ye Jung
Partner: UNT Libraries

International police cooperation as a response to transnational organized crime in Europe: Improvements in extradition.

Description: International criminality has been a challenging phenomenon for national police forces for years. States have developed international police cooperation relations and extradition instruments in order to fight international criminal activity. This treatise explores the reasons for the rise in transnational organized crime activities in Europe and presents an in-depth explanation concerning the emergence, mandates, and structures of multilateral police collaboration systems such as Interpol, Trevi, Schengen, and Europol. Since the extradition has become an inseparable part of international policing, this study examines the improvements in extradition procedure and emphasizes the importance of extradition. Finally this study compares traditional (European Convention on Extradition of 1957) and new (European Arrest Warrant) extradition systems.
Date: August 2005
Creator: Durmaz, Huseyin
Partner: UNT Libraries
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