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171.
172.
The statutory language of the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65; California Health and Safety Code 25249.5 et seq.) encourages rapid adoption of “no significant risk levels” (NSRLs), intakes associated with estimated cancer risks of no more than 1 in 100,000. Derivation of an NSRL for a carcinogen listed under Proposition 65 requires the development of a cancer potency value. This paper discusses the methodology for the derivation of cancer potencies using an expedited procedure, and provides potency estimates for a number of agents listed as carcinogens under Proposition 65. To derive expedited potency values, default risk assessment methods are applied to data sets selected from an extensive tabulation of animal cancer bioassays according to criteria used by regulatory agencies. A subset of these expedited values is compared to values previously developed by regulatory agencies using conventional quantitative risk assessment and found to be in good agreement. Specific regulatory activities which could be facilitated by adopting similar expedited procedures are identified.  相似文献   
173.
Theory-based evaluation (TBE) explores the how and why of program success or failure. Advocates of TBE claim that it produces information unavailable in traditional process and outcome studies. This article examines six published papers of TBEs. It finds that the authors of the papers do not always make explicit the relation of their data to the theory of the program. Nevertheless, it was evident in one or more cases that TBE identified unnecessary program components, located intermediary changes, raised new questions, contributed to a paradigm shift, highlighted the difficulties of taking successful pilot programs to scale, and provided clarity and focus for the evaluation. Interestingly, in none of the studies was the original theory completely right. Lessons for the future of TBE are drawn.  相似文献   
174.
Parental social capital has emerged as an important social control component of adolescent delinquency. However, for severe forms of delinquency, such as violence, adolescent social capital is as likely a source of social control as adult social capital. This study uses the first two waves of the Longitudinal Study of Adolescent Health to show that parental social capital has little effect on violence once parental and family characteristics are controlled. However, both neighborhood and school adolescent social capital reduce adolescents' violent behavior in spite of strong controls of peer fighting, prior violent offending, and neighborhood-level variables.  相似文献   
175.
The average physician has developed several different headv, each representing another selfon the same body. One is that ofthe conventional, ethical professional who wants nothing more than to improve mankind’s health and well-being, the standard model. Another is the scientist who intends to be perceived as calculating, cold, and factual in determining what will or will not assist the ailing patient (Uexkull & Hannes, 1986). His tools are drugs, surgery, and hospitalization for presumed physical and mental ills. The third, and the one that concerns us the most, is what I will call “the neo-capitalist professional hero” (Lifton, 1971). This persona is an evolution of our American dominated internationaL cuLture which the medical profession as a group has honored by honing and poli5hing with extraordinary skil, second only to politicians and bankers, maximizing it to the ftuther detriment of the entire society. Though the body needv all three to function, none of these heads willingly acknowledges or suppOl1s the importance of the others. In what follows, a variety of media, journals, professional books, and a survey are refen"ed to in documenting data about ethical Laxity and fraud in the medical profession. Institutional, social concepts are developed that explain the data, and revealing how sociaL distress is the embodiment of the neo-capitalist professional hero. There are also suggestions for remedies in what follows, which are presented without realistic hope for implementation very soon, unfortunately, since they involve deep changes in established sociaL institutions. However, the country at large has developed some awareness of a problem which has reached epidemic propOrlions in the medical profession. FUrlher increments in awareness promise to tip the balance into positive government action.  相似文献   
176.
Recruiting a scientifically sound cohort of young men who have sex with men (YMSM) is an enduring research challenge. The few cohort studies that have been conducted to date on YMSM have relied on nonprobability sampling methods to construct their cohorts. While these studies have provided valuable information about HIV risk behaviors among YMSM, their generalizability to broader YMSM populations is limited. In this article, the authors describe a venue-based sampling methodology used to recruit a large and diverse cohort of YMSM from public venues in Los Angeles County, California. Venue-based sampling is a multistage probability sampling design that uses standard outreach techniques and standard survey methods to systematically enumerate, sample, and survey hard-to-reach populations. The study design allowed the authors to estimate individual, familial, and interpersonal psychosocial factors associated with HIV risk and health-seeking behaviors for a cohort of YMSM with known properties. Study participants completed an extensive baseline survey and over a 2-year period completed four follow-up surveys at 6-month intervals. The baseline survey was administered in both English and Spanish.  相似文献   
177.
The purpose of this pilot study was to describe attachment behavior in children adopted internationally at six months post adoption. Twenty-two children and their adoptive mothers were observed at home for completion of an attachment measure. Mothers also completed a questionnaire on their child's preadoption care. Comparisons of children low and high in attachment security suggested that low secure children showed predominantly ambivalent attachment behavior or that they were still in the process of forming an attachment. Children having foster versus orphanage care prior to adoption differed in quality of preadoption care and in certain attachment behaviors, but not in overall attachment security.  相似文献   
178.
ABSTRACT

Family involvement in school, children's relationships with their teachers, and children's feelings about school were examined longitudinally from kindergarten through fifth grade for an ethnically diverse, low-income sample (N = 329). Within-families analyses indicated that changes in family involvement in school were directly associated with changes in children's relationships with their teachers and indirectly associated with changes in children's feelings about school, with student–teacher relationships mediating this latter association. Increases in family involvement in school predicted improvements in student–teacher relationships, and, in turn, these improvements in student–teacher relationships predicted improvements in children's perceptions of competency in literacy and mathematics as well as improvements in children's attitudes toward school, more generally. These results are consistent with systems theories of child development and help answer why family educational involvement matters for low-income children. This research was supported by a grant to the authors from the National Institute of Child Health and Human Development (5R03HD052858-02). Principal investigators of the School Transitions Study were Deborah Stipek, Heather Weiss, Penny Hauser-Cram, Walter Secada, and Jennifer Greene, who were supported in part by grants from the John D. and Catherine T. MacArthur Foundation, The Foundation for Child Development, and the William T. Grant Foundation.  相似文献   
179.
Resumen

Este estudio se refiere a un análisis de las diferencias sociodemográficas que están presentes en la satisfacción marital en relación a la interacción en las parejas, aspectos emocionales y estructurales del cónyuge. Las variables sociodemográficas que se consideran son, a saber: sexo, nümero de años de casados, edad, escolaridad y nümero de hijos.

Se aplicaron las tres subescalas de la Escala de Satisfacción Marital (Pick de Weiss y Andrade Palos, sometido a publicación) en la Ciudad de México, a una muestra de 244 personas casadas.

Se encontraron diferencias con respecto al sexo del sujeto, su escolaridad y nümero de años casados, en lo que respecta a la satisfacción con la interacción conyugal. En relación a satisfacción con aspectos emocionales del cónyuge se obtuvieron diferencias en el nümero de hijos y las variables que mostraron diferencias significativas en el factor de satisfacción con aspectos estructurales del cónyuge fueron sexo y nümero de hijos.  相似文献   
180.
This article presents three critical analyses of social work practice as depicted in Ken Loach's 1994 film Ladybird, Ladybird. The analyses are intended to serve as a teaching tool in a course on critical perspectives in social work. The tool applies the radical, feminist and postmodern critiques of social work practice to the depiction of the practice in the film. It seeks to contribute to a better understanding of those critical approaches that have developed within the social work profession and, in particular, to emphasize the relevance of these approaches to actual practice. The article explicitly endeavors to arouse debate and reflection on practice among social worker students and to encourage self‐criticism in order to further the development of anti‐oppressive social work practice.  相似文献   
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