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31.
Valerie G. Zartarian Jianping Xue Halûk Özkaynak Winston Dang Graham Glen Luther Smith Casson Stallings 《Risk analysis》2006,26(2):515-531
Concerns have been raised regarding the safety of young children who may contact arsenic residues while playing on and around chromated copper arsenate (CCA)-treated wood playsets and decks. Although CCA registrants voluntarily canceled the production of treated wood for residential use in 2003, the potential for exposure from existing structures and surrounding soil still poses concerns. The EPA's Office of Research and Development developed and applied the probabilistic Stochastic Human Exposure and Dose Simulation model for wood preservatives (SHEDS-Wood) to estimate children's absorbed dose of arsenic from CCA. Skin contact with, and nondietary ingestion of, arsenic in soil and wood residues were considered for the population of children in the United States who frequently contact CCA-treated wood playsets and decks. Model analyses were conducted to assess the range in population estimates and the impact of potential mitigation strategies such as the use of sealants and hand washing after play events. The results show predicted central values for lifetime annual average daily dose values for arsenic ranging from 10(-6) to 10(-5) mg/kg/day, with predicted 95th percentiles on the order of 10(-5) mg/kg/day. There were several orders of magnitude between lower and upper percentiles. Residue ingestion via hand-to-mouth contact was determined to be the most significant exposure route for most scenarios. Results of several alternative scenarios were similar to baseline results, except for the scenario with greatly reduced residue concentrations through hypothetical wood sealant applications; in this scenario, exposures were lower, and the soil ingestion route dominated. SHEDS-Wood estimates are typically consistent with, or within the range of, other CCA exposure models. 相似文献
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33.
Frederick O. Lorenz Glen H. Elder Wan‐Ning Bao K. A. S. Wickrama Rand D. Conger 《Rural sociology》2000,65(1):50-71
Abstract This study links macro social change to emotional health through continuity and change in farming. Families were divided into four groups, depending on whether they were full‐time farmers, part‐time farmers, displaced farm families who had left farming during the 1980s, or nonfarm families. Using four waves of panel data, we estimated initial levels and subsequent changes in per capita family income, stressful life events, and depressive symptoms of wives and husbands. Between 1989 and 1992, full‐time farm families' incomes decreased dramatically, while displaced farm families started 1989 with the lowest average per capita family income but saw the largest average increases in subsequent years. Farm status and changes in income predicted changes in stressful life events; changes in stressful life events, in turn, predicted changes in wives' and husbands' reports of depressive symptoms. 相似文献
34.
Susan?M.?MooreEmail author Anna?C.?Thomas Michael?Kyrios Glen?Bates Denise?Meredyth 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2011,27(1):129-143
Geographic closeness of gambling venues is not the only aspect of accessibility likely to affect gambling frequency. Perceived
accessibility of gambling venues may include other features such as convenience (e.g., opening hours) or “atmosphere”. The
aim of the current study was to develop a multidimensional measure of gamblers’ perceptions of accessibility, and present
evidence for its reliability and validity. We surveyed 303 gamblers with 43 items developed to measure different dimensions
of accessibility. Factor analysis of the items produced a two factor solution. The first, Social Accessibility related to
the level at which gambling venues were enjoyed because they were social places, provided varying entertainment options and
had a pleasant atmosphere. The second factor, Accessible Retreat related to the degree to which venues were enjoyed because
they were geographically and temporally available and provided a familiar and anonymous retreat with few interruptions or
distractions. Both factors, developed as reliable subscales of the new Gambling Access Scale, demonstrated construct validity
through their correlations with other gambling-related measures. Social Accessibility was moderately related to gambling frequency
and amount spent, but not to problem gambling, while, as hypothesised, Accessible Retreat was associated with stronger urges
to gamble and gambling problems. 相似文献
35.
This paper discusses the main findings of a major survey ofUK community development workers. The authors also point tosome serious weaknesses facing the community development professionin the United Kingdom that are preventing it from gaining greaterrecognition. Following a review of community development inthe United Kingdom in recent years, its activities and strategiccontexts, the paper highlights three key themes: occupationalinstability and employment, equality issues, training and support.Given the UK policy context, in which considerable emphasisis being given to the importance of involving communities, thearticle argues that policymakers and community development organizationshave a responsibility to find ways of ensuring that the knowledge,skills, and techniques of community development are better understoodand supported. 相似文献
36.
Monica Kirkpatrick Johnson Kristie Long Foley Glen H. Elder Jr. 《The Sociological quarterly》2004,45(1):45-66
Americans who came of age during and immediately following World War II have recently become a central feature for more broadly understanding volunteerism, as well as civic participation, in the United States. Using data from the Stanford-Terman Study we examine women's community service participation and leadership over the period 1940–1960. The women studied moved in and out of community service over time, with patterns of participation showing a great deal of variability. Both the likelihood of involvement in community service and community service leadership peaked during midlife. Age-related patterns were largely accounted for by changes in correlated resources. Beyond age patterns, the marks of history are apparent in an increasing investment in volunteerism between 1940 and 1960 for this generation of American women. The findings of this study both support and extend a resource perspective on volunteering. 相似文献
37.
Robert Crosnoe Rashmita S. Mistry Glen H. Elder 《Journal of marriage and the family》2002,64(3):690-702
This study applies a family process model to the linkage between early economic disadvantage and later enrollment in higher education. Using two waves of data on low‐income youth, the authors found that the attitudes and behaviors of their parents, mostly mothers, mediate the impact of disadvantage on enrollment. Economically disadvantaged parents are less optimistic about their adolescents' educational chances and, in turn, engage less in the proactive parenting that promotes enrollment. The authors also found that parents' perceived efficacy buffers against the more negative consequences of disadvantage that can influence their adolescents' educational trajectories. Group comparisons reveal few differences by gender or ethnicity. 相似文献
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39.
Gretchen K. Carlisle Rebecca A. Johnson Micah Mazurek Jessica L. Bibbo Francesca Tocco Glen T. Cameron 《Journal of Family Social Work》2013,16(4-5):294-312
Companion animals (i.e., pets) have been increasingly recognized for the roles they play in families, including those with children with Autism Spectrum Disorder (ASD). This cross-sectional study explored the unique functions of companion animals within families with a child with ASD. Phenomenology was used to analyze the responses of participants (N = 338) who responded to a survey offered through the Interactive Autism Network. The study initially focused on dogs; however, the analysis was forced to expand to other species due to the data provided by participants. Seven major themes emerged: bonding and benefits, learning opportunities, barriers, grief, fit (match of family characteristics with those of the companion animal), safety, and alternative animals. Successful fit between companion animals and families was often described as necessary for beneficial functions. Barriers included necessary cost and time, as well as required supervision of interactions to enhance safety of the children and animals. 相似文献
40.
This paper draws upon the research carried out for a study of human resource needs of social workers in Canada to make a SWOT analysis of social work education and the profession. Strengths that were identified included a holistic practice orientation; the linkage between theory and practice; regulation and certification; a generalist approach to practice; increased cultural relevance of social work education; high quality social work programs; a continued demand for social workers; and the values of the profession. Weaknesses included a lack of professional identification, or identity crisis; an inability to promote the profession; the diffuse knowledge base of the profession; conflict between the values of social action and social control; a lack of preparation to manage the stress of our work; insufficient aboriginal, visible minority and multicultural members of the profession; and for aboriginal people, that social work can be seen as a residual effect of colonization. Threats to the profession included a trend to neoliberalism; increasing identification of social workers with the bureaucracy; increasing managerialization; increased community responsibility for service delivery; and interdisciplinarity. Opportunities identified included design of cost effective programs which meet service user needs; exercise of responsibility for social advocacy; development of managerial competence in social workers; extension of job opportunities through privatization; and articulation of social work competencies. 相似文献