The World Wide Web has become a significant source of medical information for the public, but there is concern that much of the information is inaccurate, misleading, and unsupported by scientific evidence. This study analyzes the validity of health claims on the World Wide Web for the herbal Opuntia using an evidence-based approach, and supports the observation that individuals must critically assess health information in this relatively new medium of communication. A systematic search by means of nine search engines and online resources of Web sites relating to herbal remedies was conducted and specific sites providing information on the cactus herbal remedy from the genus Opuntia were retrieved. Validity of therapeutic health claims on the Web sites was checked by comparison with reports in the scientific literature subjected to two established quality assessment rating instruments. 184 Web sites from a variety of sources were retrieved and evaluated, and 98 distinct health claims were identified. 53 scientific reports were retrieved to validate claims. 25 involved human subjects, and 28 involved animal or laboratory models. Only 33 (34%) of the claims were addressed in the scientific literature. For 3% of the claims, evidence from the scientific reports was conflicting or contradictory. Of …

The Prothrow-Stith violence prevention curriculum for high school students was adapted and presented to middle school students. An adaptation in materials, reading level and administration should not adversely effect the outcome of program participation, as the concepts that form the foundation of this curriculum are applicable to all ages. The essential question addressed in this study is as follows: Is the adapted curriculum effective? The evaluation instrument used for both pretests and posttest showed three distinct sections that were composed of general knowledge statements; statements that indicated an attitudinal predisposition toward violence; and statements that indicated a behavioral predisposition toward violence. After factor analysis the general knowledge section showed three grouping factors: factual knowledge, murder knowledge and alcohol knowledge. Factor analysis of the attitude section yielded two factors: a positive attitudinal predisposition toward violence and a negative predisposition toward violence. Seven hypotheses were tested. The analysis showed in a significant difference between the pretest and posttest for all respondents as an increase in factual knowledge; a decrease in negative attitude predisposition toward violence; and, a decrease in behavioral predisposition toward violence. There was a significant difference between the participating schools; there was no significant difference between the ages; and, results …

By allowing judgments based on a small number of exemplar documents to be applied to a larger number of unexamined documents, clustered presentation of search results represents an intuitively attractive possibility for reducing the cognitive resource demands on human users of information retrieval systems. However, clustered presentation of search results is sensible only to the extent that naturally occurring similarity relationships among documents correspond to topically coherent clusters. The Cluster Hypothesis posits just such a systematic relationship between document similarity and topical relevance. To date, experimental validation of the Cluster Hypothesis has proved problematic, with collection-specific results both supporting and failing to support this fundamental theoretical postulate. The present study consists of two computational information visualization experiments, representing a two-tiered test of the Cluster Hypothesis under adverse conditions. Both experiments rely on multidimensionally scaled representations of interdocument similarity matrices. Experiment 1 is a term-reduction condition, in which descriptive titles are extracted from Associated Press news stories drawn from the TREC information retrieval test collection. The clustering behavior of these titles is compared to the behavior of the corresponding full text via statistical analysis of the visual characteristics of a two-dimensional similarity map. Experiment 2 is a dimensionality reduction condition, in …

Atomic resolution images of hot-tungsten filament chemical-vapor-deposition (CVD) grown epitaxial diamond (100) films obtained in ultrahigh vacuum (UHV) with a scanning tunneling microscope (STM) are reported. A (2x1) dimer surface reconstruction and amorphous atomic regions were observed on the hydrogen terminated (100) surface. The (2x1) unit cell was measured to be 0.51"0.01 x 0.25"0.01 nm2. The amorphous regions were identified as amorphous carbon. After CVD growth, the surface of the epitaxial films was amorphous at the atomic scale. After 2 minutes of exposure to atomic hydrogen at 30 Torr and the sample temperature at 500° C, the surface was observed to consist of amorphous regions and (2x1) dimer reconstructed regions. After 5 minutes of exposure to atomic hydrogen, the surface was observed to consist mostly of (2x1) dimer reconstructed regions. These observations support a recent model for CVD diamond growth that is based on an amorphous carbon layer that is etched or converted to diamond by atomic hydrogen. With further exposure to atomic hydrogen at 500° C, etch pits were observed in the shape of inverted pyramids with {111} oriented sides. The temperature dependence of atomic hydrogen etching of the diamond (100) surface was also investigated using UHV STM, and …

Unique and proprietary data of the illiquid, one-year non cancelable for three month Bermudan swaps (1Y NC 3M swaps) and one-year non callable for three months Bermudan CDs (1Y NC 3M CDs), provides evidence of market efficiency. The 1Y NC 3M swap and 1Y NC 3M CD markets efficiently reflected unexpected economic information. The 1Y NC 3M swaption premiums also followed the European one-year into three-month (1Y into 3M) swaption volatilities. Swaption premiums were computed by pricing non-optional instruments using the quoted 1Y NC 3M swap rates and the par value swap rates and taking the difference between them. Swaption premiums ranged from a slight negative premium to a 0.21 percent premium. The average swaption premium during the study period was 0.02 percent to 0.04 percent. The initial swaption premiums were over 0.20 percent while the final swaption premiums were 0.02 percent to 0.04 percent. Premiums peaked and waned throughout the study period depending on market uncertainty as reflected in major national economic announcements, Federal Reserve testimonies and foreign currency devaluations. Negative swaption premiums were not necessarily irrational or quoting errors. Frequently, traders obligated to provide market quotes to customers do not have an interest and relay that lack of …

he purpose of this study was to determine the effects of one approach to vocabulary instruction on the reading and writing vocabulary of fourth grade students in an individualized reading program. The vocabulary instructional approach used student-selected vocabulary words as well as instruction in vocabulary strategies such as context clues, structural analysis, and definition strategies. The twelve week study exposed one fourth grade classroom to vocabulary instruction in a Reading Workshop setting. Major components of the program were mini-lessons, which often involved vocabulary strategies, the silent reading of self-selected books, one-on-one researcher/student interactions, and the self-selection of vocabulary words. The research design is descriptive in nature and used both qualitative and quantitative research methods. Qualitative data included student interviews, teacher interviews, student writing samples, and field note observations. Quantitative data included vocabulary test scores from two groups of students, Group A and Group B. Group A participated in the self-selected vocabulary approach and received vocabulary instruction from the researcher acting as participant observer. Group B received some vocabulary instruction from their classroom teacher, but did not participate in the same program. The test was constructed weekly from a class (Group A) generated list of ten words. Results from vocabulary tests …

Subjects rated 12 female body shapes with respect to their physical attractiveness, and the extent to which they would be expected to possess various personality characteristics. The shapes were varied using 3 levels of overall weight and 4 levels of body shapeliness. The sample was modified to control for socioeconomic factors and results are based on 297 undergraduates from Caucasian, African American, and Hispanic racial backgrounds. Loglinear analyses revealed that men and women, regardless of racial background, rated shapely underweight females as most physically attractive, sexy, and ideal for a woman, followed by normal weight figures of similar proportion. African Americans, women in particular, judged the shapely normal weight figures more favorably than the other subjects. Multidimensional scaling and subsequent frequency analyses showed that those figures judged as most attractive, sexy, and ideal were also expected to be fairly emotionally stable, and most successful and interpersonally competitive, but least faithful, kind, and family-oriented. Overweight female shapes, while rated as least physically attractive, sexy, and emotionally stable, were expected to be most family-oriented, kind, and faithful. Shapely normal weight figures were judged to be attractive and sexy, and were assumed to possess a moderate amount of the personality traits in question. …

Let M be the class of simple matroids which do not contain the 5-point line U2,5 , the Fano plane F7 , the non-Fano plane F7- , or the matroid P7 , as minors. Let h(n) be the maximum number of points in a rank-n matroid in M. We show that h(2)=4, h(3)=7, and h(n)=n(n+1)/2 for n>3, and we also find all the maximum-sized matroids for each rank.

This study was designed to determine the effectiveness of individual child-centered play therapy in the elementary school in: 1) enhancing the self-concept of kindergarten children who are experiencing adjustment difficulties; 2) decreasing the overall behavioral problems of kindergarten children experiencing adjustment difficulties 3) decreasing externalizing behavior problems such as aggression and delinquency of kindergarten children experiencing adjustment difficulties; 4) decreasing the internalizing behavior problems such as withdrawal, somatic complaints, anxiety and depression of kindergarten children experiencing adjustment difficulties; 5) increasing parental perception of change in the problematic behaviors of kindergarten children experiencing adjustment difficulties; and 6) enhancing self-control in kindergarten children experiencing adjustment difficulties. A secondary objective was to compare the participants involved in individual child-centered play therapy with participants in a previous study who were involved in child-centered group play therapy on the above named dimensions. The experimental group, consisting of 14 kindergarten children experiencing adjustment difficulties, received 10-12, 30-minute individual play therapy sessions in a 12 week period in their elementary school. The comparison group, utilized from the 1999 McGuire study, consisted of 15 children with adjustment problems and received 12-14, 45-minute group play therapy sessions in 14 weeks in their elementary school. The control group, consisting of …

In 1997, NLNAC added critical thinking as a required outcome for accreditation of associate degree nursing (ADN) programs. Until recently general critical thinking tests were the only available standardized critical thinking assessment tools. The emphasis has shifted to discipline specific tools. This concurrent validity study explored the correlation between two critical thinking tests, a general skills test, the California Critical Thinking Skills Test (CCTST) and a discipline specific test, the Arnett Critical Thinking Outcome Evaluation (CTOE). Both tests are based on the same definition of critical thinking. The CCTST, developed in 1990, covers discipline neutral content in multiple choice items. The CTOE, a free entry, written response test developed in 1998, assesses critical thinking in nursing situations using a partial credit model. A convenience sample of 434 sophomore ADN students from 9 programs in Texas completed the demographic survey and critical thinking tests in 1999. The sample was 87.9% female and 74.2% Caucasian, with a mean age of 31, mean GPA of 3.13, mean 3.7 years healthcare employment experience, mean CCTST score of 15.0023 and mean CTOE of 82.69. The sample also included 22.4% current LVNs, 15.7% with prior degrees and 53.5% in the first generation of their family to …

Gary Snyder has offered, in poems and essays, ways to acknowledge the interrelationships of humans with the more-than-human. He questions common notions of selfness as well as understandings of what it is to be human in relationship to other species and ecosystems, and he offers new paradigms for the relationship between cultures and the ecosystems in which these cultures reside. These new paradigms are rooted in a reevaluation of our attitudes toward our physical bodies which impacts our relationship to the earth and raises new possibilities for an ecological spirituality or philosophy. The sum of Snyder's endeavors is a foundation for an understanding of ecopoetics. Snyder's poem "The Trail is Not a Trail" is an interesting place to begin examining how human perceptions of the self are central to the kinds of relationships that humans believe are possible between our species and everything else. In this poem there is a curious fusion of the speaker and the trail. In fact, with each successive line they become increasingly difficult to separate. The physical self is central to Snyder's poetry because his is a poetry of the self physically rooted in ever-shifting relationship with the biosphere. The relationship of the self to …

The purpose of the study was to investigate the leadership role of the Texas Bandmasters Association (1920-1997) in the development of the band program in Texas. It sought to determine TBA's effect on the band movement in Texas, and ascertain how the TBA has contributed to the emphasis on performance focus that is associated with the Texas band tradition. In doing so, the study also provided information regarding the association's goals, purposes, activities, and contributions during the time period under investigation. The historical data for the study was compiled from documentary sources and personal interview. Documentary sources included minutes of meetings from 1920-1997, information contained in various periodicals including the Southwestern Musician combined with the Texas Music Educator, and a nearly complete set of clinic-convention programs. Historical data from past researchers, including several masters theses and doctoral dissertations, and tapes and transcripts of interviews conducted by past researchers, as well as interviews conducted by this researcher, were also utilized. Much of the historical data for the study was located at the Texas Music Educators Association archives, housed at the association headquarters in Austin, Texas. The researcher identified five periods of the association's history. In addition to developing a historical chronology, …

This study addressed the current status of early childhood curriculum design and implementation in the Texas Education Service Centers Seven and Eight. No Previous research about the characteristics of the preschool programs had been completed in those areas. This research established if preschool programs were receiving priority status in East Texas. The results yielded evidence regarding the characteristics of administrators, teachers, curriculum implementation, plus parent and community involvement. The information also provided insight regarding short-term and longitudinal effects on children who have attended preschool programs. Data were collected from a search of educational literature, regional service preschool directors, administrators, and teachers. The procedure used in designing the survey and interview documents was Michael Scriven's goal-free strategy. The main sources for the questions were the National Association for the Education of Young Children and Head Start. The study first directs attention to the common characteristics of national programs/standards, then discusses the level of implementation in local rural prekindergartens. The fifteen open-ended interviews yielded concise information relevant to the population of students served and administrative beliefs on current practices. Surveys were sent to a total of all preschool administrators in the Education Service Center Regions of Seven and Eight. A 51 percent …

This study attempted to determine the types, extent, and quality of student personnel services in colleges and universities accredited by the Accrediting Association of Bible Colleges (AABC). The Basic Services Questionnaire (BSQ) was adapted for use among Bible colleges and universities and mailed to chief student affairs officers representing 69 Bible colleges in the United States accredited by the AABC. Of the 71 surveys mailed (two institutions employed both a Dean of Men and Dean of Women), 46 were returned for a response rate of 65 percent. Chi-square tests of goodness-of-fit were performed on the data in order to categorize the types, extent, and quality of student services provided by the institutions. The Mueller-Schuessler Index of Qualitative Variation was used to determine the homogeneity, or heterogeneity, of the chief student affairs officers when grouped according to specific variables (gender, ethnic origin, major for highest degree earned, and highest degree earned). Frequency counts and percentage distributions were used on demographic data to present a profile of chief student services administrators at AABC schools. The results of the study point to four conclusions. First, the types of student personnel services provided by American Bible colleges and universities accredited by the AABC closely …

Texas law regarding the legal status of women and their property rights developed from the mingling of Spanish and English laws. Spanish laws regarding the protection of women's rights developed during the centuries-long Reconquest, when the Spanish Christians slowly took back the Iberian Peninsula from the Moorish conquerors. Women were of special importance to the expansion of Spanish civilization. Later, when Spain conquered and colonized the New World, these rights for women came, too. In the New World, women's rights under Spanish law remained the same as in Spain. Again, the Spanish were spreading their civilization across frontiers and women needed protection. When the Spanish moved into Texas, they brought their laws with them yet again. Archival evidence demonstrates that Spanish laws in early Texas remained essentially unchanged with regard to the status of women. Events in the history of England caused its legal system to develop in a different manner from Spain's. In England, the protection of property was the law's most important goal. With the growth of English common law, husbands gained the right to control their wives's lives in that married women lost all legal identity. When the English legal system crossed the Atlantic and took root …

Implementations of information technology solutions to address specific information problems are only successful when the technology is utilized. The antecedents of technology use involve user, system, task and organization characteristics as well as externalities which can affect all of these entities. However, measurement of the interaction effects between these entities can act as a proxy for individual attribute values. A model is proposed which based upon evaluation of these interaction effects can predict technology utilization. This model was tested with systems being implemented at a pediatric health care facility. Results from this study provide insight into the relationship between the antecedents of technology utilization. Specifically, task time provided significant direct causal effects on utilization. Indirect causal effects were identified in task value and perceived utility constructs. Perceived utility, along with organizational support also provided direct causal effects on user satisfaction. Task value also impacted user satisfaction in an indirect fashion. Also, results provide a predictive model and taxonomy of variables which can be applied to predict or manipulate the likelihood of utilization for planned technology.

The purpose of this study was to examine the prevalence of the comorbidity of emotional/behavioral disorders (EBD) and speech/language disorders among those students identified as under The Individuals With Disabilities Education Act criteria as emotionally disturbed and speech impaired. The literature reviewed included clinical and school settings that examined a cooccurrence of language disorders in the EBD population. Other research reported a lack of routine involvement of speech/language therapists in the assessment of the EBD population. Implications from clinical studies suggested a need for greater attention to language disorders in a multi- and interdisciplinary assessment. This study investigated the prevalence of the dual occurrence of EBD and speech/language disorders in Grades 2 through 6 in Texas schools in light of the known research. Relationships in ethnicity and socioeconomic status were examined using chi-square test of independence. Aggregate data were obtained from the database of the Texas Pupil Information Management System and from survey questionnaire responses provided by speech therapists in selected districts. The literature review focused on the impact of language in the development of appropriate personal interactions and communication skills, especially those relevant to pragmatic language factors and the implications of language competency in successful personal living and career …

The current period of rapid technological change, particularly in the area of mediated communication, has combined with new philosophies of education and market forces to bring upheaval to the realm of higher education. Technical capabilities exceed our knowledge of whether expenditures on hardware and software lead to corresponding gains in student learning. Educators do not yet possess sophisticated assessments of what we may be gaining or losing as we widen the scope of distributed learning. The purpose of this study was not to draw sweeping conclusions with respect to the costs or benefits of technology in education. The researcher focused on a single issue involved in educational quality: assessing the ability of a student to complete a course. Previous research in this area indicates that attrition rates are often higher in distributed learning environments. Educators and students may benefit from a reliable instrument to identify those students who may encounter difficulty in these learning situations. This study is aligned with research focused on the individual engaged in seeking information, assisted or hindered by the capabilities of the computer information systems that create and provide access to information. Specifically, the study focused on the indicators of completion for students enrolled in …

The widespread distribution of personal computers (PCs) throughout organizations has made a substantial impact on information systems. Additionally, the tremendous growth of the Internet has changed the way business is carried out. As the user population evolves into a much more technical and demanding group, their needs are also changing. With this change, Management Information Systems (MIS) departments must develop new ways of providing service and support to the user community. This study investigates the relationship between information systems support structures, support services, service quality and the characteristics of a diverse user population. This includes investigating technical support issues influencing user satisfaction. This study attempts to improve the understanding of the support function within MIS. The results of this study clarify the support needs of the users and identify user satisfaction factors, as well as factors relative to the quality of the support received. Six streams of prior research were reviewed when developing the research framework. These include: user support, end users and end-user computing, identifying and classifying user types, information centers, user satisfaction, service quality and other sources of computer support. A survey instrument was designed using the (UIS) user satisfaction instrument developed by Doll and Torkzadeh (1988) and …

In 1982, Richard C. Frushell urged the necessity for a critical study of Susanna Centlivre's plays. Since then, only a handful of books and articles briefly discuss herand many attempt wrongly to force her into various critical models. Drawing on performativity models, my reading of several Centlivre plays (Love's Contrivance, The Gamester, The Basset-Table and A Bold Stroke for a Wife) asks the question, "What was it like to see these plays in performance?" Occupying somewhat uneasy ground between literature and theatre studies, I borrow useful tools from both, to create what might be styled a New Historicist Dramaturgy. I urge a re-examination of the period 1708-28. The standard reading of theatre of the period is that it was static. This "dry spell" of English theatre, most critics agree, was filled with stock characters and predictable plot lines. But it is during this so-called "dry spell" that Centlivre refines her stagecraft, and convinces cautious managers to bank on her work, providing evidence that playwrights of the period were subtly experimenting. The previous trend in scholarship of this cautious and paranoid era of theatre history has been to shy away from examining the plays in any depth, and fall back on …

Medical educators advocate the need for medical students to acquire information management skills, including the ability to search the MEDLINE database. There has been no published validated method available to use for assessing medical students' MEDLINE information retrieval skills. This research proposes and evaluates a method, designed as the MEDLINE Metric, for assessing medical students' search skills. MEDLINE Metric consists of: (a) the development, by experts, of realistic clinical scenarios that include highly constructed search questions designed to test defined search skills; (b) timed tasks (searches) completed by subjects; (c) the evaluation of search results; and (d) instructive feedback. A goal is to offer medical educators a valid, reliable, and feasible way to judge mastery of information searching skill by measuring results (search retrieval) rather than process (search behavior) or cognition (knowledge about searching). Following a documented procedure for test development, search specialists and medical content experts formulated six clinical search scenarios and questions. One hundred and forty-five subjects completed the six-item test under timed conditions. Subjects represented a wide range of MEDLINE search expertise. One hundred twenty complete cases were used, representing 53 second-year medical students (44%), 47 fourth-year medical students (39%), and 20 medical librarians (17%). Data related …

This study investigated decision making factors used by child caregivers to identify suspected child abuse and neglect and collected data on caregiver training in the recognition and reporting of suspected child abuse and neglect. Data was collected in July 1999 in fourteen north Texas childcare programs. One hundred twenty three teaching and administrative staff completed a survey based on Jacobson, A., Glass, J. and Ruggiere, P. (1998). Five teachers and five administrators chosen for convenience were read eleven vignettes describing possibly abusive situations to decide whether they were reportable or non-reportable, and to indicate factors used to make their decisions. Administrators (50%) and teachers (13.3%) reported being unfamiliar with child abuse and neglect definitions and reporting laws. Two thirds (66.7%) of the administrators and 39.8% of the teachers had received specific training in recognizing and reporting child abuse and neglect. Administrators were more likely than teachers to report suspected child abuse and neglect. Teachers often reported to program administrators rather than state designated authorities. All subjects relied on information about children, but administrators also used information about parents, with teachers more likely to make excuses for parental actions. With 110 reporting opportunities, training was cited as a factor only twice …

Gunther Schuller is credited with coining the term Third Stream, meaning compositions where twentieth-century art music forms exist simultaneously with jazz. Furthermore, Schuller specifically states in the liner notes to the debut recording of Eine Kleine Posaunenmusik "The work is not a Third Stream piece." Yet the concerto alludes to jazz through a multitude of slide glissandi and plunger mute effects, Solotone mute passages, specific references to the jazz trombone styles of Tommy Dorsey and Lawrence Brown, musical quoting or indirect reference, and the use of a walking bass line in Movement V, Finale. What makes one piece Third Stream and another simply a modern composition with jazz implications? Is Third Stream primarily a compositional designation or a performance practice stipulation? How does a celebrated trombone soloist inspire and collaborate with a distinguished composer in the creation of a major work? The somewhat conspicuous title, Eine Kleine Posaunenmusik, seems to point towards Mozart's famous string serenade Eine Kleine Nachtmusik. What connection to Mozart, if any, does Schuller's title suggest? All of these questions are elucidated in this study through careful investigation and research of Gunther Schuller's Eine Kleine Posaunenmusik. New interviews with John Swallow and Gunther Schuller are included.

The results of neuropsychological tests are often used by clinicians to make important decisions regarding a demented patient's ability to competently and/or independently perform activities of daily living. However, the ecological validity of most neuropsychological instruments has yet to be adequately established. The current study examined the relationship between neuropsychological test performance and functional status in 42 individuals diagnosed with Alzheimer's Disease. A comprehensive battery of cognitive tests was employed in order to assess a wide range of neuropsychological abilities. Functional status was measured through the use of both a performance-based scale of activities of daily living (The Direct Assessment of Functional Status; Loewenstein et al., 1989) as well as by a caregiver/informant-based rating scale (Instrumental Activities of Daily Living; Lawton & Brody, 1969). Findings suggest that neuropsychological functioning is moderately predictive of functional status. Memory performance was the best predictor of functional status in most ADL domains, followed by executive functioning and visuospatial abilities.