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.

Polymer hydrogel films change their properties in response to environmental change. This remarkable phenomenon results in many potential applications of polymer hydrogel films. In this thesis colored thermo-sensitive poly(N-isopropylacrylamide) (PNIPAAm) hydrogel film was prepared by firstly synthesizing polymer latex and secondarily crosslinking the nanoparticles and casting the polymers onto glass. The shape-memory effect has been observed when changing the environmental temperature. The temperature-dependent of turbidity of polymer hydrogel film was measured by HP UVVisible spectrophotometer. This intelligent hydrogel might be used in chemomechanical systems and separation devices as well as sensors. Polymer adsorption plays an important role in many products and processes. In this thesis, surfactant-free three-dimensional polystyrene (PS) nanoparticle network has been prepared. The infrared spectroscopy and solubility experiment are performed to prove the crosslinking mechanism, also the BET method was used to measure the adsorption and desorption of polystyrene network. The BET constant (C) is calculated (C=6.32). The chemically bonded polymer nanoparticle network might have potential applications as catalyst or used for chromatographic columns.

This purpose of this study was to combine two bodies of literature on relationships, attachment and violence. Given the impact of men's physical aggression and emotional abuse on women, it is likely that these behaviors would also affect attachment. A model proposing that women's attachment style mediated and moderated the relationship between partners' physical and emotional abuse and the stability of women's relationships was tested. Archival data were used from two waves of interviews with a sample of lowincome, ethnically diverse community women. Most (89%) of the initial 835 participants of Project HOW: Health Outcomes of Women completed at least one additional interview providing information on the status of their initial relationships. Of these women, 39% were African American, 30% were Euro-American, and 31% were Mexican American. The effects of men's psychological abuse and physical violence on women's attachment style were tested with regression analyses. The interrelationships between partners' abuse, attachment and relational stability were tested with SEM. Attachment style was expected to moderate the associations among variables and mediate the impact of partners' negative behavior on relational stability. In regression analyses, partners' psychological abuse predicted avoidant and anxious, but not secure attachment ratings. Violence, although significant, explained less variance …

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Lili Boulanger was an important composer of early twentieth century French music. Her compositional style represents a development and mastery of musical techniques of the great composers of her time including Fauré, Debussy and Wagner combined with her own creative expression. The result is a compelling musical language that was uniquely her own. She held an important place among her contemporaries in Paris and her accomplishments were considered newsworthy during her lifetime (1893- 1918). She obtained a much sought-after publishing contract with Ricordi. Her more famous sister, Nadia Boulanger, felt that Lili was the better composer of the two, and her peers and music professors clearly felt that both her musical and personal qualities were extraordinary. Evidence of her intelligence, creativity, and artistic growth can be seen in her music. As the first woman to win the Prix de Rome (July 5, 1913), Lili Boulanger, unlike Clara Schumann, Fanny Mendelssohn, or Alma Mahler, was acknowledged and acclaimed during her lifetime for her skill as a composer. Yet, nearly a century later the music of this talented French composer is not as well known as it deserves to be. In an effort to discover the reasons for this relative anonymity, this …

The effects of graduated exposure, modeling and contingent social attention on tolerance to skincare products were evaluated with two boys with autism who displayed tactile defensiveness. Upon each presentation step of skincare products the number of positive and negative responses and successful step completion were measured. Procedures included modeling, presenting graduated opportunities, and providing social attention for step completion. Step advancement occurred if a child engaged in a step independently, without excessive refusals. A changing criterion design and a multiple baseline were employed to evaluate effects of this treatment package. Children demonstrated more positive and fewer negative responses as they completed the graduated steps. Effects maintained in follow-up observations.

Spontaneous activity in neuronal networks in vitro is common and has been well documented. However, alteration of spontaneous activity in such networks via conditioning electrical stimulation has received much less experimental attention. Two different patterns of electrical stimulation were used to enhance or depress the level of spontaneous activity in spinal cord cultures. High-frequency stimulation (HFS), a method routinely shown to increase the efficacy of synaptic transmission, was employed to augment spontaneous activity. Low-frequency stimulation (LFS), the technique often applied to depress synaptic efficacy, was employed to decrease spontaneous activity. In addition, LFS was used to reverse the effect of HFS on spontaneous activity. Likewise, HFS was applied to counter the effect of LFS. Because these networks were grown on multi-microelectrode plates (MMEPs), this allowed the simultaneous stimulation of any combination of the 64 electrodes in the array. Thus, the possible differences in response to single versus multi-electrode stimulation were also addressed. Finally, test-pulses were delivered before and after the conditioning stimulation on the same stimulation electrode(s) in order to assess the change in mean evoked action potentials (MEAPs). Dissociated spinal tissue from embryonic mice was allowed to mature into self-organized networks that exhibited spontaneous bursting activity after two weeks …

The purpose of this research was to study the attitudes of Korean and American early childhood educators concerning gifted children and programs aimed specifically at meeting their needs. The study examined general attitudes towards giftedness and gifted education programs and factors that might affect those attitudes. The study also examined desirable environments for young gifted children. Twenty-item questionnaires were developed and logically divided into six sections (identification, teacher environment, classroom environment, parent environment, educational rights, and program). A systematic process of development, analysis, and refinement of the questionnaire was done. The questionnaires were given randomly to American educators attending the 1996 National Association for the Education of Young Children (NAEYC) conference. A random Korean sample included early childhood educators listed in the Korean Association for Early Childhood Education Directory (1995-1996) and the Korean Association for Child Care Directory (1995-1996). All subjects were members of one of three groups: (a) teacher educators, (b) teachers, and (c) administrators/directors. The surveys found agreement between Korean and American early childhood educators on the importance of knowing the strengths of individual gifted children, the need to stimulate higher order thinking skills, the rights of gifted children to an appropriate education, a perception of more work …

As a result of the reauthorization of the Individuals with Disabilities Education Act of 1997, schools must now consider positive behavioral interventions and strategies to address problem behavior of students with Emotional/Behavioral Disorders (E/BD). Given the poor behavioral, academic, and social outcomes for these students, there is a compelling need to identify effective, proactive interventions. Current literature has well established the ineffectiveness of traditional, punitive, and consequence-laden strategies to deal with behaviors. Research has shown the manipulation of antecedent stimuli, in the form of curricular adaptations, can provide a positive, proactive means of managing behavior. Specifically, curriculum modifications, based on student interest, are proposed as a positive, proactive strategy used to manipulate antecedent stimuli to improve the behavior of students with E/BD. The purpose of this study was to investigate the manipulation of antecedent stimuli through the implementation of individualized, curricular adaptations, based on student interest, to reduce the problem behavior of students exhibiting disruptive behaviors. A second purpose was to explore the effect of those adaptations on the behavior motivation of students with E/BD. In this study, curriculum modifications based on student interest were used to reduce disruptive behavior, increase desirable behavior, and effect change in the motivation for …

Knowledge workers are an important resource for the typical modern business firm, yet financial reporting ignores such resources. Some researchers contend that the accounting profession has stressed reliability in order to make the accounting appear objective. Others concur, noting that accounting is an insecure profession and adopts strict rules when faced with uncertainty. Accountants have promulgated a strict rule to expense human resource costs, although many know that such resources have future benefits. Some researchers suggest that any discipline must modify its language in order to initiate change toward providing useful social ameliorations. If accounting theorists extend this idea to the accounting lexicon.s description of investments in human resources, investors and other accounting user groups might gain greater insight into how a firm fosters and nourishes human capital. I tested three hypotheses related to this issue by administering an experiment designed to assess financial analysts. perceptions about alternative financial statement treatments of human resources in an investment recommendation task. I predicted that (1) analysts' perceptions of the reliability (relevance) of the information they received would decrease (increase) as the treatment of human resources increasingly violated GAAP (became more current-oriented), (2) analysts exposed to alternative accounting treatments would report a lower …

This dissertation contains five chapters: 1. Introduction, 2. Basic Digital Processing Used in Summer Rain, 3. Part I Summer Rain - Dawn, 4. Part II After the Summer Rain and 5. Conclusion. Introduction contains a brief historical background of musique concrète, Electronische Musik, acousmatic music and music for instruments and tape, followed by basic descriptions of digital technique used in both parts of Summer Rain in Chapter 2. Also Chapter 2 describes software used in Summer Rain including "Kawamoto's VST," which is based on MAX/MSP, to create new sounds from the recorded samples using a Macintosh computer. In both Chapter 3 and 4, Kawamoto discusses a great deal of the pre-compositional stage of each piece including inspirational sources, especially Rainer Maria Rilke's poems and Olidon Redon's paintings, as well as her visual and sound imageries. In addition Chapter 3 she talks about sound sources, pitch, form and soundscape. Chapter 4 contains analysis on pitch in the piano part, rhythm, form and the general performance practice. Chapter 5 is a short conclusion of her aesthetics regarding Summer Rain, which is connected to literature, visual art and her Japanese cultural background.

It has become increasingly important to remain on the cutting edge of technology for a company to remain competitive and survive in today's high-tech industries. To do this, a company needs various resources dedicated to this cause. One of these resources is the use of existing materials, as starting points, for which improved materials can be based. For this, a company must rely on the characterization of existing materials to bring that base technology into their company. Through this evaluation, the base materials properties can be obtained and a material with improved properties can be developed. There are many techniques that can be used in characterizing an existing material, but not every technique is required to obtain the desired goal. The techniques utilized depend upon the depth of identification required. This report summarizes several techniques utilized in the characterization of existing materials and provides some examples of evaluated products.

This written thesis gives an account of the creative production of Two Fingers: Michael's Struggle, a twenty-nine minute documentary video that explores the life of Michael Alan Rasch who suffers from Duchenne Muscular Dystrophy. It explains in detail the process of pre-production, production, and post-production of the documentary. It also discuses the integration of theories applied in the documentary. Two Fingers shows that although Michael has lived with the disease almost his entire life, his perspective and attitude are more about living and enjoying life. Through it, the filmmaker intends the viewer to gain a tremendously important lesson about the human spirit.

The purpose of this study was to investigate the effectiveness of teaching reading through discussion of text structures on students' reading comprehension. The design of the study was a Pretest-Posttest Control-Group Design. One hundred twenty-six sophomore and senior Thai college students majoring in English and attending afternoon English classes participated in the 10-week study and were randomly assigned to an experimental group and a control group. The experimental group received reading instruction in the characteristics of narrative and expository text structures and how to discuss the details of story by applying knowledge of text structures. The control group, on the other hand, read each story silently by themselves and answered comprehension questions. The posttest means of the two groups were compared, and a t test was used to test the significance difference of the means. The results did not reveal any differences between the means. The short time of the intervention may be a crucial factor that made the two strategies yield the same effects. However, the survey responses showed the participants liked reading through discussion of text structures more than reading by themselves.

This research study investigated the effectiveness of a filial therapy training model as a method to train fifth grade students in child-centered play therapy skills and procedures. Filial therapy is an intervention that focuses on strengthening and enhancing adult-child relationships. The fifth grade students were trained to be a therapeutic change agent for kindergarten children identified as having adjustment difficulties, by utilizing basic child-centered play therapy skills in weekly play sessions with the kindergarten children. Specifically, this research determined the effectiveness of filial therapy in increasing the fifth grade students': 1) empathic responses with kindergarten children; 2) communication of acceptance with kindergarten children; 3) allowance of self-direction with kindergarten children, and 4) involvement in play activities of kindergarten children. The experimental group of fifth grade students (N=12) received thirty-five minutes of training twice a week for 5 weeks and then once a week for the duration of the 10 weeks of play sessions. The control group (N=11) received no training during the 15 weeks of the project. Fifth grade student participants were videotaped playing with a kindergarten child identified as having adjustment difficulties in 20-minute play sessions before and after the training to measure empathic behavior in adult-child interactions. Analysis …

his study compares ethnic, age, and gender differences concerning attitudes and behaviors toward death, dying, and bereavement among Caucasian, African, Hispanic, and Asian American adult participants in north Texas with the results of a 1976 study by Kalish and Reynolds on death attitudes and behaviors of Caucasian, African, Mexican, and Japanese American adult participants in Los Angeles, California. A modified version of Kalish and Reynolds' study questionnaire was administered to 526 respondents (164 Caucasian, 100 African, 205 Hispanic, and 57 Asian Americans) recruited from community and church groups. Findings of this study were compared with those of Kalish and Reynolds in specific areas, including experience with death, attitudes toward one's own death, dying, and afterlife, and attitudes toward the dying, death, or grief of someone else. Data was analyzed employing the same statistical tools as those used by Kalish and Reynolds, i.e., chi square calculations, frequencies, percentages, averages, and analyses of variance. As compared with the earlier study, results indicated that this study's participants were less likely to have known as many persons who had died recently or to state they would try very hard to control grief emotions in public. Present study participants were more likely to have visited …

The purpose of this study was to determine the relationship between sixth grade students' academic achievement levels in math and their perceptions of school climate. Student characteristics of socioeconomic status and gender were used to identify groups for the purpose of data analysis. Data was gathered using the five independent variables of the My Class Inventory (satisfaction, friction, competitiveness, difficulty, and cohesiveness) and the dependent variable of the Stanford Achievement Total Math scores. The results of the data collection were tested using a Pearson product-moment analysis and a backward multiple regression analysis. A univariate analysis of variance was also used to compare the five independent variables of the My Class Inventory as well as to compare socioeconomic status and gender with the Stanford Achievement Total Math scores. The schools selected for this study were from a city in Texas with a population of approximately 100,000. The sample consisted of 262 sixth grade mathematics students. The findings of this study are as follows: (a) The Pearson product-moment correlation analysis revealed little, if any, correlation for any of the five subscale predictor variables; (b) the multiple regression analysis revealed that all five classroom climate indicators combined together could explain only 10.5% of …

This research investigated a neglected problem - interruption of groups by agent advisory systems. The question was whether interruption by the agent advisory system was beneficial. A survey of literature in four areas is included in this dissertation. The areas surveyed were Agents, Online Help, Computer Supported Cooperative Work(CSCW) and Awareness in CSCW. Based on the review, a human subject experiment was conducted. The study investigated whether the style of agent advisory interface improved the performance of group members. There were three sets of groups, a control set that did not have advisory agents, a set that had system provided advisory agents and a set that had group customized advisory agents. The groups worked together using a CSCW application developed with GroupKit, a CSCW toolkit. The groups with group customized advisory agents used an Agent Manager application to define advisory agents that would give them advice as they worked in the CSCW application. The findings showed that the type of advisory agents did not significantly influence the performance of the groups. The groups with customized agents performed slightly better than the other groups but the difference was not statistically significant. When notified that advice was issued, groups with customized agents …

The purpose of this study was to identify and analyze sales people's perceptions of performance appraisal criteria in a telecommunications corporation. The study was prompted by the perceived disillusionment of the sales people with the current performance appraisal criteria. The perceptions of 67 sales people were assessed using a questionnaire developed by the researcher. One-way analysis of variance procedures (ANOVA) were used to determine if there were statistically significant differences in premise and telemarketing sales people's perceptions of performance appraisal criteria. Findings indicated that there were no statistically significant difference in premise and telemarketing sales people's perceptions of the 38 performance appraisal criteria statements. Findings did not indicate a statistically significant difference in premise and telemarketing sales people's perceptions of the performance criteria statements, the attitude or satisfaction statements, and the peripheral issue statements. Based on this study, the sales people appear to have clear perceptions of the performance appraisal criteria.

The music of Samuel Barber is well known in the vocal, piano, and string literature; however, little of his chamber music involves woodwinds, and in particular, only one work involves the woodwind quintet. Summer Music, originally commissioned as a septet, developed after the premiere of the work into the woodwind quintet version, with the assistance of the New York Woodwind Quintet. Barber is considered a contemporary .romantic. composer, evidenced through his use of lyricism. Summer Music, a standard in the woodwind quintet literature, should be included in every professional flutist's repertoire. The intent of this dissertation is to consider Barber's use of lyricism as a determinant of the form of Summer Music, as well as to compare the differences between the manuscript and the published edition.

Many psychotic patients fail to admit they are mentally ill. The current study evaluated the associations between insight, specific symptoms, and neurocognitive impairments. Thirty-three acute inpatients with a schizophrenia, schizoaffective disorder, or psychotic disorder NOS diagnosis were rated on the SAIE, Birchwood's IS, and the BPRS. Neurocognitive assessments of attention and frontal lobe functioning were also conducted. Stepwise multiple regression analyses found composites representing delusions, disorganization, and anxiety/depression, as well as CPT-IP shapes hit rate, served as significant predictors of total insight or the specific insight dimensions. At least for acute patients, symptoms tended to have stronger relationships with and were more regularly predictive of insight than neurocognitive measures, though the attentional task associated with right hemisphere functioning, contributed significantly.

The purpose of this study was to analyze the characteristics of teacher directed modeling evidenced in the practices of three experienced high school choral directors. Research questions were: 1. What modeling activities were exhibited in each teacher's rehearsals? 2. When viewing a 45-minute composite tape of each teacher's instructional activities representative of all rehearsals, what instructional behaviors did each choral director recognize and identify as modeling? 3. What instructional episodes on the composite tape not identified by the teachers contained elements of modeling? 4. What other episodes from the remainder of each choral director's rehearsal practice contributed to an understanding of modeling? Videotapes of three high school choral directors were recorded over the course of one semester. Excerpts from rehearsals were combined to form a 45-minute composite tape of each choral director. A text transcription was made of the composite tape. Participant directors viewed their tape and identified instructional episodes that they recognized as examples of modeling. Identifications were analyzed, and descriptive categories of modeling behaviors were established. Modeling was found to be a teacher generated or delegated act of demonstration. Demonstrations were musical or non-musical and belonging to either of three distinct categories: audible, visible, or process modeling. Subdivisions …

An aspartate transcarbamoylase (ATCase) gene from Bordetella pertussis was amplified by PCR and ligated into pT-ADV for expression in Escherichia coli. This particular ATCase (pyrB) was an inactive gene found adjacent to an inactive dihydroorotase (DHOase) gene (pyrC'). This experiment was undertaken to determine whether this pyrB gene was capable of expression alone or if it was capable of expression only when cotransformed with a functional pyrC'. When transformed into E. coli TB2 pyrB-, the gene did not produce any ATCase activity. The gene was then co-transformed into E. coli TB2 pyrB- along with a plasmid containing the pyrC' gene from Pseudomonas aeruginosa and assayed for ATCase activity. Negative results were again recorded.

Providing standards for music technology use in community college music programs presents both challenges and opportunities for educators in American higher education. A need exists to assess the current use of technology at the community college level for the purpose of improving instruction. Although limited research has been done on the use of technology to support music education K- 12 and in four-year universities, little research on the problem in the community college setting was found. This research employed a Delphi study, a method for the systematic solicitation and collection of professional judgments on a particular subject, to examine existing criteria, “best practices”, and standards, in an effort to develop a set of standards specifically for the community college level. All aspects of a complete music program were considered including: curriculum, staffing, equipment, materials/software, facilities and workforce competencies. The panel of experts, comprised of community college educators from throughout the nation, reached consensus on 50 of the 57 standards. Forty-one or 82%, were identified as minimal standards for the application of music technology in music education. Community college music educators, planning to successfully utilize music technology to improve teaching and learning should implement the 41 standards determined as minimal by …