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91.
Hierarchically structured thesauri--including MeSH--were studied to test the assumption of an inverse relationship between term specificity and the number of postings in online databases. It was suggested that this assumption holds only for peripheral terms and that the opposite is true for the central terms of a discipline. The Environment tree structure of MeSH was used to test the "peripheral" hypothesis, which was supported at a .05 level of significance, but the scattergram on the Endocrine Diseases tree, which was run to test the "central" hypothesis, had an even better level, .02. The commonly held belief that specific terms are added to a thesaurus when more general ones get too many postings was also tested. The relationship between specificity and dates was supported in MeSH (.015). The corollary--that terms with later dates have fewer postings--was supported at a .001 level of significance. The results for MeSH were much more significant than for other hierarchically structured thesauri, which indicates that thesaurus development at NLM involves interaction with MEDLINE to preclude an excessive number of postings to any one term. 相似文献
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Temporal and topic contingencies between child and mother speech are reported at 2 achievements in language development in the second year. Measured against their respective baseline rates of speech, children were most likely to talk before mother speech and mothers most likely to talk after child speech. This pattern, evident at both language achievements, increased in amplitude with development. These early conversations were generated by the children; neither their interactions nor word learning depended on adult-scaffolded formats. Only about one-third of all child speech occurred in response to something mothers said; only half of all child speech received a topic-related response. When mothers responded, they most often simply acknowledged, repeated, or clarified what the child said. The results supported the intentionality model for language development, in which the child's role is primary: Children learn words for expression and interpretation in order to share contents of mind, bringing words to their conversations that they've already learned in other contexts. 相似文献
94.
This article excavates the voices of urban black males as they speak their name (Belton, 1996) in a society that denies them this right. Based on data gathered in a large-scale ethnographic interview study of urban America, the authors traverse the spoken lives of these men, as they weave stories about neighborhood and state violence, opportunities denied and missed, and the current power of black men's groups in the church. Through their day-to-day lives urban black men challenge social representations about them in racist America, constructing an alternative hegemonic masculinity revolving around relationships, fatherhood, and dignity.Professor of Sociology of Education at the State University of New York at BuffaloCompleted her Ph.D. at the State University of New York at Buffalo and is now a practicing psychologist at Claremont CollegesCurrent graduate student at CUNY 相似文献
95.
Over 40 years after the publication of the Report of the Committee of Enquiry into the Education of Handicapped Children and Young People, commonly referred to as the Warnock Report, this article uniquely considers its legacy in the context of Northern Ireland. The article adopts a Foucauldian genealogical approach to consider first the specific context of the ‘emergence’ or ‘origins’ of the Warnock Report in the 1970s, highlighting competing political forces and the positioning of the report at the very end of the age of post-war welfarism. The approach details the key elements of the Warnock Report itself, and then charts the resulting development of SEN policy in Northern Ireland, culminating in the faltering process of reform which began in 2006 and has been partially completed but which has recently been halted by the collapse of the power-sharing Executive and the suspension of the Northern Ireland Assembly in January 2017. The legacy of the Warnock Report is critically examined, identifying the main positive contributions of the report but also acknowledging the enduring challenges set against a complex current financial and political context. Finally, rather than leaving Warnock completely behind, a case is made for a fresh, detailed, context-specific reading of this seminal report. 相似文献
96.
Yong Liu Daniel S. Putler Associate Professor Charles B. Weinberg 《Journal of Cultural Economics》2006,30(2):127-140
This paper studies the behavior of commercial television broadcasters in markets where the distribution of viewer tastes varies. Our results show that a highly “clustered” market enables the broadcaster to offer a program of a popular type but with lower quality (i.e., lower production values) than is the case when viewers have more diffused tastes. We find that viewer equity in the television market (i.e., the percentage of all potential viewers who have at least one program they consider worth watching) and viewer welfare (i.e., total consumer surplus) may not coincide. Depending upon the distribution of viewer tastes and the cost of providing quality programming, the number of broadcasters required to fully cover the market to avoid market failure may be greater than the number of broadcasters that produce greater viewer welfare. The study suggests that regulatory bodies need to pay attention to the distribution pattern of viewer tastes and the broadcasters' desire for return on programming investments, since both factors have important implications for competitive outcomes and viewer well-being. 相似文献
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Lois Weiner 《The Urban Review》1989,21(3):151-161
The second wave of educational excellence reforms has focused on improving teaching and teacher education to restore the nation's economic and industrial health and to reduce poverty in the inner cities. The author examines the theoretical underpinning of the conventional linkage between urban poverty, urban education, and urban teacher education, and suggests an alternative framework. An effective program to train urban teachers must address the bureaucratic conditions that sabotage students and teachers' success and encourage mutually respectful relationships among urban schooling's constituents. 相似文献
100.
Lois A. Huebner Lauren M. Weitzman Lisa M. Mountain Kris L. Nelson Danielle R. Oakley Michael L. Smith 《Journal of College Counseling》2006,9(1):72-78
Counseling centers have been challenged to effectively treat the growing number of college students who struggle with disordered eating. In response to this critical issue, the authors have developed an Eating Disorder Assessment and Treatment Protocol (EDATP) to assist clinical disposition in the counseling center setting and identify treatment guidelines within a coordinated care approach. Practical applications of the EDATP and future research that can assess its clinical utility are addressed. 相似文献