This study evaluated the effects of Project PACE, a program designed to increase physical activity, on the physical activity level and selected psychosocial variables of sedentary adolescent females ages 12 to 18. Psychosocial variables included self efficacy, attitude, perception of barriers, perceived social support, and knowledge. Of the 69 participants, 40 were enrolled in the treatment group and 29 were enrolled in the control group at the start of the study. The only significant differences were found for attitudes towards physical activity at base line. Findings from this study suggest that implementation of Project PACE protocol in school settings may produce some positive effects, but no significant findings were detected.

Recently, three distinct isoforms of phospholipase D (PLD) were identified in Arabidopsis thaliana. PLD α represents the well-known form found in plants, while PLD β and γ have been only recently discovered (Pappan et al., 1997b; Qin et al., 1997). These isoforms differ in substrate selectivity and cofactors required for activity. Here, I report that PLD β and γ isoforms were active toward N-acylphosphatidylethanolamine (NAPE), but PLD α was not. The ability of PLD β and γ to hydrolyze NAPE marks a key difference from PLD α. N-acylethanolamines (NAE), the hydrolytic products of NAPE by PLD β and γ, inhibited PLD α from castor bean and cabbage. Inhibition of PLD α by NAE was dose-dependent and inversely proportional to acyl chain length and degree of unsaturation. Enzyme kinetic analysis suggested non-competitive inhibition of PLD α by NAE 14:0. In addition, a 1.2-kb tobacco (Nicotiana tabacum L.) cDNA fragment was isolated that possessed a 74% amino acid identity to Arabidopsis PLD β indicating that this isoform is expressed in tobacco cells. Collectively, these results provide evidence for NAE producing PLD activities and suggest a possible regulatory role for NAE with respect to PLD α.

A Wedding Ceremony is a composition of approximately 17 minutes in duration and is scored for horn in F, two trumpets in B-flat, trombone, two percussionists (timpani, roto toms, chimes, snare, triangle, suspended cymbal), 2-part boys choir, female soprano, and organ. The work consists of five parts of a mass, the Processional, Kyrie, Alleluia!, Hosanna!, and Recessional, with texted sections being taken from the Latin mass. The work is intended for a sacred wedding service of any denomination. The work was composed with the traditional aspects of the Latin mass in combination with a contemporary setting.

Women in distressed relationships who had sustained severe psychological abuse and either no, moderate, or severe violence from their partner were included (N = 93). Men's and women's alcohol use did not differ with level of violence. Different patterns were found in the moderate violence group regarding women's beliefs about their partner's substance problem, men's psychological abuse, and the relationship of men's and women's quantity of alcohol use and times intoxicated. Uncertainty resulting from moderate violence may strengthen the emotional impact of psychological abuse. Even when psychological abuse is exacerbated by violence, women may use active coping techniques rather than drinking to cope with abusive relationships. The findings suggest that an inordinate focus on alcohol abuse may be ineffective in combating the problem of domestic violence.

With numerous bioassessment methodologies available, a regional protocol needs to be developed to ensure that results are comparable. A regional assessment protocol was developed that includes collecting five benthic macroinvertebrate samples, identifying organisms to genus, and calculating the following metrics: Number of Taxa, Total Number of Individuals, Simpson's Diversity Index, Shannon's Diversity Index, Percent Contribution of Dominant Taxa, Hilsenhoffs Biotic Index, and Percent Contribution of Dipterans. Once the protocol was developed, it was used to assess the Bayou Chico tributaries and watershed. All three tributaries had been significantly impacted by human activity as had the watershed as a whole. This study indicates that a regional protocol could be developed and is appropriate for biomonitoring at the watershed scale.

Use of the term "ritual" in PsycLit from 1975-1995 was examined through an archival study. Abstracts identified as including any form of the term were coded for valence, target population, study type, and differential area of interest. Valence was predominantly positive, consistent across time, with a growing negative trend. Interest in ritual has increased. Key elements of adaptive ritual were identified as recurrence across time, shared symbolism and volitional participation. A Dynamic Process of Ritual is proposed which includes the individual, society, and chaos in a fluctuating relationship, all operating within an additional dimension of a continuum of ritualization in which the individual's position is determined by personal and societal complexity and individual response to crisis.

A 2 x 2 factorial design investigated effects of sediment nitrogen and water potassium levels on autofragment production. Reduced nitrogen levels significantly increased autofragment production whereas potassium levels did not significantly alter production. Up to 50% of autofragment production abscised from parent plants grown under low nitrogen conditions compared to 12% or less under high nitrogen conditions.

Sociolinguists working in Northern urban areas have shown that Hispanics who come in contact with African Americans sometimes acquire features of African American vernacular English (AAVE). However, the acquisition of AAVE features by Hispanics in the South has yet to be documented. Specifically, no one has studied the kind of English that Hispanics in Texas are acquiring. The present study investigates this issue through research in an inner-city area of Dallas: Oak Cliff. During the past twenty-five years, the population of Oak Cliff has changed from a largely African American community to include a substantial number of Hispanics. Though their neighborhoods remain fairly separate, sports and gangs provide an arena for extended contact. This study investigates the extent to which AAVE grammatical features are being acquired by bilingual Hispanic adolescents who hang out with African Americans. The analysis for this paper focuses on the relationship between contact and depth of acquisition of AAVE syntactic constraints on the use the copula (is/are, be). Preliminary results show that be+V+ing as an habitual form has been incorporated into the grammar of these subjects, suggesting fundamental changes towards an AAVE grammatical system.

The release of the two films, Madame Bovary (1992) by Claude Chabrol and Le Colonel Chabert (1994) by Yves Angelo, arouses an interest in a method which studies the rapport between the seventh art and literature. Following the studies of the narratologists, Gerard Genette, Yves Reuter, Gerard-Denis Farcy, Celestino Deleyto, Andre Gaudreault and Francois Jost, a method of analyzing and studying the relationship between literature and cinema can be developed. The principal interest of a comparative study can reside in the relationship between the story and the narration of the two genres of works. The study conducted at this level of analysis allows the appreciation of the impoverishments or the enrichments operated by the adapter. The comparative analysis of the works of Flaubert, Chabrol, Balzac, and Angelo reveal the problems relative to the cinematographic adaptation.

Subjects in this study were 5,523 respondents from a survey which was sent to households throughout the United States. The purpose of this study was to examine two basic components of career orientation: career indecision and career insight. Correlational analyses found relationships between career indecision and average job tenure, industry leaving intentions, industry staying intentions, and job satisfaction. Correlational analyses found relationships between career insight, industry staying intentions and job satisfaction. Multiple regression analyses were run using both career indecision and career insight as independent variables found that they had useful levels of incremental validity in predicting industry leaving intentions and job satisfaction. Potential uses of the two-dimensional career indecision - career insight model are discussed.

Results of a functional analysis indicated that the self-injurious behavior (SIB) of an adult female with profound mental retardation occurred primarily in the alone and demand conditions. Graphs of the separate topographies (head slaps and head bangs) showed that head banging occurred in the alone condition and that both head banging and head slapping occurred in the demand condition. A data analysis procedure to identify within-session trends across sessions and fluctuations in rates of SIB by topography revealed that most of the demands escaped were escaped by head slaps and that over 80% of all head slaps were associated with escape, compared to less than 1%of all head bangs, indicating that head banging and head slapping were members of separate functional response classes. Treatment consisted of noncontingent availability of preferred leisure materials, and produced substantial decreases of both head banging and head slapping. Interpretation of the results are discussed, as well as some implications and limitations of the study.

Outcomes of experimental analyses during which protective equipment (PE) was placed on three participants were compared to those during which PE was not provided to them. Experimental analysis conditions were presented using a multielement format, and the effects of PE were evaluated using a withdrawal design. Results of experimental analysis without PE suggested that self-injurious behavior (SIB) was maintained by negative reinforcement for two participants and nonsocial mechanisms for the third participant. However, SIB was eliminated either immediately or eventually for all participants when PE was provided during experimental analysis. Thus, outcomes of assessments with PE did not match those without PE, and no conclusion about variables associated with SIB could be drawn from experimental analyses with PE alone. Therefore, the present findings do not support the use of PE as an alternative to standard methods for conducting experimental analysis (i.e., without PE).

Since the introduction of management practices by the Forest Service to stabilize red-cockaded woodpecker (RCW) populations, the number of cavity trees killed by southern pine beetles (SPB) has increased. A model of the landscape ecology of RCW and SPB in the Homochitto National Forest was created using data collected from the Forest Service and Global Atmospherics. The conclusions of the study were that the RCW and SPB utilize the same type of habitat and the stand hazard maps are an accurate means of determining the locations of SPB infestations. The functional heterogeneity maps created for the SPB and RCW would be useful predictors of future occurrences of either species if complete data were obtained.

This study develops and empirically tests a model of the determinants of federal spending for crime-fighting policies. An inter-disciplinary approach to building the model is utilized that merges ideas from budgeting, policy analysis and criminology. Four factors hypothesized to impact federal spending for the administration of justice are operationalized as eight variables and tested using ordinary least squares regression analysis on time series data. The factors hypothesized to impact federal spending in this area are economic constraints imposed on government spending, the ideological makeup of Congress and the president, the actual crime rate, and the public's attitude toward crime. Five of the eight variables demonstrated statistical significance at the.10 level or better.

This thesis is an investigation of the way in which the painter May Stevens (b. 1924) synthesizes her personal experiences and political philosophy to form complex and enduring works of art. Primary data was accumulated through an extended interview with May Stevens and by examining her works on exhibit in New York and Boston. An analysis of selected works from her "Big Daddy" and "Ordinary/Extraordinary" series revealed how her personal feelings about her own family became entwined with larger political issues. As an important member of the feminist art movement that evolved during the 1970s, she celebrated this new kinship among women in paintings that also explored the contradictions in their lives. In more recent work she has explored complex social issues such as teenage prostitution, sexism, and child abuse in a variety of artistic styles and media. This study investigates how May Stevens continues to portray issues of international significance in works that consistently engage the viewer on a personal, almost visceral level.

Bacterial aspartate transcarbamoylases (ATCase's) are divided into three classes that correspond to taxonomic relationships within the bacteria. The opportunistic pathogen Moraxeila catarrhalis has undergone several reclassifications based on traditional microbiological criteria. The previously uncharacterized ATCase from M. catarrhalis was purified to homogeneity and its chemical properties characterized. The ATCase from M. catarrhalis is a class C ATCase with an apparent molecular mass of 480-520 kDa. The M. catarrhalis ATCase is a dodecomer composed of six 35 kDa polypeptides and six 45 kDa polypeptides. The enzyme has an unusually high pH optimum of greater than pH 10. The enzyme exhibited hyperbolic kinetic with a Km for aspartate of 2 mM. A single, separate 78 kDa dihydroorotase from M. catarrhalis was identified and it was not associated with ATCase. These data support the reclassification of M. catarrhalis out of the Neisseriaceae family.

This study examines the social and economic characteristics of the men who joined the Confederate Fourteenth Texas Infantry Regiment during the Civil War and provides a narrative history of the regiment's wartime service. The men of the Fourteenth Infantry enlisted in 1862 and helped to turn back the Federal Red River Campaign in April 1864. In creating a portrait of these men, the author used traditional historical sources (letters, diaries, medical records, secondary narratives) as well as statistical data from the 1860 United States census, military service records, and state tax rolls. The thesis places the heretofore unknown story of the Fourteenth Texas Infantry within the overall body of Civil War historiography.

The effects of cannabinoid agonists on spontaneous neuronal network activity were characterized in murine spinal cord and auditory cortical cultures with multichannel extracellular recording using photoetched electrode arrays. Different cultures responded reproducibly with global decreases of spiking and bursting to anandamide and methanandamide, but each agonist showed unique minor effects on network activity. The two tissues responded in a tissue-specific manner. Spontaneous activity in spinal tissue was terminated by 1 μM anandamide and 6.1 μM methanandamide. Cortical activity ceased at 3.5 μM and 2.8 μM respectively. Irreversible cessation of activity was observed beyond 8 μM for both tissues and test substances. Palmitoylethanolamide, demonstrated that CB2 receptors were not present or not responsive. However, the data strongly suggested the presence of CB1 receptors.

Unearthing Edward Abbey's spiritual philosophy is not an easy task. One must sift through Abbey's humor, sort through Cactus Ed's flamboyant character, look under the veneer of this character, and beyond Abbey's overt objective of convincing readers to defy the destruction of wilderness, and only then does the spiritual philosophy of Abbey become visible. To understand his perception of spirituality, one must define what constitutes a mystic and determine what American theological philosophies mystics tend to adopt. Once these are defined, one can apply those principles to Abbey's Desert Solitaire, and determine that Abbey is a nature mystic who adheres to the ecocentric based immanence theology. This theology is contrary to the Judeo-Christian based emanation theology which supports anthropocentricism and resourcism.

This study explores the reasons for the rise in independent film's popularity, which have created a unique Hollywood phenomenon, the successful "mini-major" independent studio, dedicated to both art and commerce. Chapters cover the history of independent film, characteristics of both independent and mainstreamfilms with regards to financing, acquisition, distribution and marketing, trends within independent film in the late 1980s and 1990s, crucial distributors and landmark independent films, and key growth areas in the future for independent film.

The underwater optical climate of Lake Texoma was measured at eleven fixed stations from August 1996 to August 1997. Secchi transparency and submarine photometry characterized seasonal and spatial values of secchi depth (SD), vertical attenuation coefficient (η''), and depth of euphotic zone (Zeu). Indices of Zeu:SD and η'' × SD were compared with universally applied values derived from inland and coastal waters. Turbidity explained 76% of the variation (p = 0.0001) of η'' among water quality parameters, including chlorophyll-α. Using a spectroradiometer, spectral signatures of chlorophyll-α and turbidity were located. Stations with low turbidity exhibited a distinct green reflectance peak around 590-610 nanometers, indicating presence of chlorophyll-α. Stations with high turbidity exhibited a reflectance peak shift towards the red spectrum, making it difficult to detect the chlorophyll signature. Derivative analysis of the reflectance signal at 590-610, and 720-780 nanometers allowed discrimination of this chlorophyll signature from those of turbidity (0.66 ≤ r^2 ≤ 0.99).

This study demonstrates how discourse is used to construct popular myths. This study analyzes magazine advertisements used by businesses in overcoming the rhetorical problem posed by a public opinion that blamed them for environmental problems. This study shows how businesses used advertisements to construct a popular myth that businesses were doing their part in overcoming the environmental crisis.

Carbonic anhydrase is a ubiquitous zinc-metalloenzyme that catalyzes the interconversion of carbon dioxide and carbonate and has been found to play a wide range of roles in animals, plants and bacteria. Cotton genomic and cDNA libraries were screened for the plastidial isoform of carbonic anhydrase. The nucleotide sequences of two 1.2 Kb partial cDNA clones were determined. These clones exhibit high homology to carbonic anhydrases from other dicot plants and possess all the expected peptide motifs. For example, serine and threonine rich chloroplastic targeting peptide and conserved zinc binding residues are both present. These clones were utilized to isolate two carbonic anhydrase genes that were shown to encode different isoforms by PCR and RFLP analysis.

The life history and case-building behavior of Molanna tryphena from two spring-fed tributaries in East Texas were studied from January 1997 to May 1998.