This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.

Classical Stroop stimuli and newly developed face/word Stroop analog stimuli were used to investigate hemispheric interactions in Stroop interference effects (SEs) and corresponding event-related potentials (ERPs). Lateralized stimuli were presented unilaterally and bilaterally as congruent or incongruent color strip-word or face-word pairs (to invoke right hemisphere (RH) and left hemisphere (LH) specialization, respectively, in the latter case). The common finding for such tasks is that responses for the congruent condition are faster and more accurate than for the incongruent condition (i.e., the SE). A primary prediction is that the SE will be maximized when both the distractor and target components, or distractor alone, are presented to the specialized hemisphere (i.e., LH for words and RH for faces). A total of 88 right-handed University of North Texas students participated in one of four experiments. Participants manually responded to one component of the stimuli (i.e., color, face, or word), while ignoring the other. Behaviorally, participants showed a robust SE across all experiments, especially for the face/word task with word targets. Findings from the face/word Stroop analog tasks also indicated that SEs were produced by selective attention to either faces or words, implicating a role for top-down (controlled) processes. Hemispheric asymmetries were observed …

DNA sequence analysis involves precise discrimination of two of the sequence's most important components: exons and introns. Exons encode the proteins that are responsible for almost all the functions in a living organism. Introns interrupt the sequence coding for a protein and must be removed from primary RNA transcripts before translation to protein can occur. A pattern recognition technique called Finite Induction (FI) is utilized to study the language of exons and introns. FI is especially suited for analyzing and classifying large amounts of data representing sequences of interest. It requires no biological information and employs no statistical functions. Finite Induction is applied to the exon and intron components of DNA by building a collection of rules based upon what it finds in the sequences it examines. It then attempts to match the known rule patterns with new rules formed as a result of analyzing a new sequence. A high number of matches predict a probable close relationship between the two sequences; a low number of matches signifies a large amount of difference between the two. This research demonstrates FI to be a viable tool for measurement when known patterns are available for the formation of rule sets.

This study examines the agenda setting and decision-making behavior of the United States Supreme Court from 1888 to 1989.

A work of creative fiction in novella form, this dissertation follows the first-person travails of Mitch Zeller, a 26-year-old gay man who is faced with an unexpected choice. The dissertation opens with a preface which examines the form of the novella and the content of this particular work.

This study analyzed the effect of technology integration education on teachers' and students' attitudes toward information technology. Two instruments measuring similar attributes were used to assess teachers' and students' attitudes. Differences in pre- and post-test scores were used to determine changes that occurred during the course of the study.

The life history and ontogenetic microhabitat change of Mayatrichia ponta Ross were investigated in Honey Creek, Turner Falls Park, Murray Co., Oklahoma, U.S.A. from August 1994 to August 1995. The shape of larval cases changed from a small cone to a cylinder. M. ponta had an asynchronous multivoltine life history with considerable cohort and generation overlap; five generations were estimated. The development rate was reduced in winter. The winter generations of M. ponta had wider head capsule widths (136-165 μm) than summer generations (121-145 μm). The sex ratio of adults was 1.43 ♂ : 1 ♀. Fecundity ranged from 46 to 150 eggs/female. Fifth instar larvae and pupae aggregated on the bottom side of substrates. Early instars were distributed evenly on all sides of substrates. General patterns of ontogenetic microhabitat shift in aquatic insects are categorized as flow mediated, flow independent, and population interactions and other resources mediated.

The thesis explores how Grant Tinker's philosophy of quality programming grew into a working ideology which would serve as the basis for its rise from last place to first place in ratings and profits from 1978 to 1986. This thesis paper explores the prime time history of NBC from 1978 to 1986. The network is examined in terms of its programming history, its economic situation, and the men who presided over the entity, all within the time frame listed above. The thesis focuses on the strategies and philosophies of the three men crucial to the direction the network took during the above time frame: Fred Silverman, President of the network from 1978 to 1981, Grant Tinker, Chairman from 1981 to 1986, and Brandon Tartikoff, Programming Chief from 1980 to 1991.

This study investigated the levels of involvement in service-learning programs and activities in 4-year public colleges and university that held membership in the Southern Association of Colleges and Schools (SACS).

Sixty Greek kindergarten teachers were surveyed regarding their teaching beliefs and practices using the Teachers Questionnaire based on guidelines recommended by the National Association for the Education of Young Children. A Varimax factor analysis produced four factors for the Teacher Belief Scale and five factors for the Instructional Activities Scale. Scores on developmentally appropriate factors were consistently higher than factors classified developmentally inappropriate. Correlation between appropriate beliefs and activities was significant (r = .470); correlation between inappropriate beliefs and practices was significant (r = .475). However, developmentally inappropriate beliefs were also positively correlated with developmentally appropriate practices (r = .537). Developmentally appropriate beliefs were not correlated with inappropriate practices. Results were discussed with possible theoretical and practical implications for future research and teacher development.

This study explores a link between "stereotype vulnerability" and the documented under performance of African American students on standardized tests. The subjects were 41 third grade African American students matched according to language arts grades with 41 third grade Anglo students. The students were from predominately middle class suburban schools, with similar educational experiences. The data suggest that third grade African American and Anglo students from predominately middle class schools, with approximately equivalent language arts grades and similar educational experiences, will score comparably to one another regardless of testing conditions. The data also suggest that this sample of third grade students are confident in their academic ability and are not affected by negative stereotyping.

This thesis is a study of four compositions written by Fanny Mendelssohn Hensel, older sister of Felix Mendelssohn. Her music is compared with four pieces composed by Felix. This study shows that Fanny was a gifted and creative composer, even surpassing Felix and predating Brahms with her compositional ideas and progressive uses of harmony. Despite her excellent education and recognition among those who knew her well, she did not publicize her talent in any way because of pressure from her father, Abraham, and Felix to stay within the prescribed societal confines of wife and mother.

In an appendix section, three notable arias have been transcribed for two clarinets, voice, and piano. A further evaluation of Classical period opera orchestration will aid modern performers and musicologists in their understanding of what clarinets and clarinetists were able and expected to do.

The Town Where Mickey Mouse Has Lived is a documentary video program in which people talk about themselves and the life of a small town. The town is known as the boyhood home of Walt Disney, which he recalled as the most charming place in his life. The interviews explore the personal perspectives of the people and why they stay in Marceline despite the fact that Disneyland, full of Disney's memories of Marceline, attracts people while the town has been obsolescent for a long time.

Ordinary Least Squares (OLS) regression analysis is applied to a cross-national data set to test two hypotheses concerning governments' hard-line response against terrorism: do hard-line responses cause more damage vis a vis event outcome and is the hard-line approach a deterrent? Six national factors are included in this analysis: economic development, economic growth rate, democratic development, leftist regime type, military regime type and British colonial legacy. Only the level of economic development, economic growth rate and leftist regime type demonstrated statistically significant relationships with the dependent variable "event frequency." Government response strength demonstrated a strong statistically significant relationship with event outcome, however, its relationship with event frequency was statistically insignificant.

The purpose of this study is to investigate the differences and similarities of quality of life (QoL) in American and Portuguese cancer patients with hematological malignancies as well as the robustness of the measures cross-culturally. Portuguese participants were 98 patients and 49 accompanying persons and the American participants were 55 patients and 22 accompanying persons. Fifty (Portuguese sample) to 40% (American sample) of the patients came with an accompanying person who answered the questionnaire concerning the patient's QoL. The two cultural groups were characterized in terms of QoL (measured by the SF-36 and the FLIC), social support (Social Support Scale), socio-demographic and clinical variables. Portuguese patients reported a higher QoL. However, this result could be attributable to the fact that the two cultural samples differ in socio-economic status. The measures seem to be comparable for the Portuguese and American samples, at least in what concerns reliability and concurrent validity.

Several biomarkers (cell viability and phagocytosis) based on earthworm (Lumbricus terrestris) immune cells (coelomocytes), together with whole-worm mortality (LC/LD50's), were used to assess a bioremediation attempt to reduce pentachlorophenol (PCP) toxicity in a former wood processing hazardous waste site (HWS).

This research employed the case study methodology to examine the issues, challenges, and project lessons learned for a large firm engaged in electronic commerce on the Internet.

The effects of lithium alkoxides on the rates of reactions and on the structures of a series of tert-butyllithium/lithium alkoxide mixed aggregates were studied, where the alkoxides were iso-butoxide, tert-butoxide and menthoxide. It was found that their effects depend not only on their amount present, but also on their steric bulk. The tert-butyllithium/lithium alkoxide mixed aggregates were exposed to UV light or heat to form lithium hydride/lithium alkoxide mixed aggregates. The aggregation states were assigned from either 13C-6Li coupling or a new technique based on the relative intensity of NMR peaks using different nuclei. The compounds formed depend upon the method of formation and the alkoxide. The unique properties of the lithium hydride/lithium alkoxide mixed aggregates are their high solubility in hydrocarbon solutions, very reactive bases, showing 6Li-1H couplings, and having only one hydride ion per aggregate. Their formation, reactivity, solubility, and aggregation states were found to depend on the size of lithium alkoxides. X-ray crystal structures of lithium tert-butoxide and lithium menthoxide were also studied and found to be hexameric.

The purpose of this study was to examine the relationship between nonverbal immediacy of community college teachers, both full-time and part-time, and their within-semester student retention rates.

There has been an interest in the kinetics of the V02 response during exercise at various intensities. However, most studies focus on the response of submaximal intensities whereas few studies have examined V02 kinetics at severe intensities. The purpose of this study was to evaluate the effect of exercise intensity on V02 kinetics over a range of severe intensities.

Among the British evangelicals of her day, Charlotte Elizabeth Browne Phelan Tonna was one of the most popular. She was an Anglican Evangelical Progressive who through her works of fiction, poetry, tracts, travel accounts, and essays dealing with theology, politics and social criticism convinced fellow evangelicals to get actively involved in the issues that concerned her.

Although the personal life of the therapist has been a topic of interest for nearly sixty years there is still a paucity of research in this area. There is also a lack of research into the personal lives of researcher psychologists. In this study 282 psychologists (151 researchers and 131 therapists) who attended regional meetings and seminars sponsored by professional psychological associations in Texas were sampled. Job stressors, personal problems and health concerns, relaxation techniques, life satisfaction, and work impact on personal life were some of the areas examined. The most important stressors associated with research were excessive teaching responsibilities, pressures associated with funding and lack of time for a personal life. For therapists the most important stressors associated with work were suicide attempts by clients, clients showing resistance, and clients being angry. Therapists reported more concerns related to anxiety, depression, and family problems than researchers. Both groups chose exercise/sports and movies/television as their most common methods for relaxation. Therapists were three times more likely to have been in therapy than researchers and once in therapy reported six times the number of hours. Researchers reported less childhood abuse than therapists. However, therapists were more satisfied with their current life, indicating …

The purpose of the study was to determine what nutritional, demographic, and behavioral differences existed between children one year of age from two similar WIC clinics with different prevalences of anemia. Children from the higher-prevalence site were found to consume significantly (p < .05) more B12, C, copper, fiber, folate, total kilocalories, and riboflavin than did children from the lower-prevalence site. Family income and maternal weight gain were significantly (p < .05) higher in the lower-prevalence group as compared to the higher-prevalence group. In addition, children from the higher-prevalence site were enrolled in the WIC program at a significantly (p < .05) younger age than were children from the lower-prevalence site.