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1.
The mean density of bacteria in a water body is commonly monitored using quantal assay. This paper describes the use of local scoring in estimating the spatial distribution of mean density from quantal assay results at a set of point locations. An application to estimating the mean density of fecal conform bacteria in a coastal pond is presented. Model diagnostics based on a parametric bootstrap are also presented.  相似文献   
2.
Of the 39 states that permit some form of public sector collective bargaining, union security agreements are prohibited in 19. Employees may join and pay dues to the union representing them in these states but they are not required to do so. This study of 372 state government workers compares union dues-payers and non-dues-payers on a variety of personal, positional, economic, and noneconomic variables. Workers who were exposed to more physical danger and less noise were more likely to be dues-payers; higher seniority workers and skilled craftworkers were more likely to pay dues. Results suggest that union voting and union dues-paying have different antecedents. They also raise questions about the generalizability of previous dues-paying research to blue-collar settings. Holding a union card in a right-to-work environment seems to have little to do with the traditional collective pursuit of economic power.  相似文献   
3.
Recent reports linking maternal prenatal drug use to SIDS in offspring raise six specific issues related to professional intervention: (1) blaming addicted parents compounds the normal guilt experienced after SIDS; (2) low self-esteem often underlies drug usage; (3) punitive intervention by child protective agencies may lead to parental mistrust of health professionals, reducing access to help; (4) society's increasing tendency to criminalize drug use during pregnancy may expose women to prosecution if a SIDS death occurs; (5) the debate over monitoring at risk infants is further complicated if caretakers use drugs; and (6) recent articles have suggested that the majority of SIDS deaths may be the result of homicide, neglect, environmental hazards, etc. For addicted parents, a SIDS death increases the risk of social fragmentation and poses challenges to professional interventions.The destructive effects of the Sudden Infant Death Syndrome go far beyond the lost lives of infants. The psychiatric morbidity among surviving family members can be severe and prolonged. Professional counseling seems vital in the prevention and treatment of a disabling guilt that follows the death of a child. (Bergman et al., 1969)  相似文献   
4.
Fishing plays an important role in people's lives and contaminant levels in fish are a public health concern. Many states have issued consumption advisories; South Carolina and Georgia have issued them for the Savannah River based on mercury and radionuclide levels. This study examined ethnic differences in risk from mercury exposure among people consuming fish from the Savannah River, based on site-specific consumption patterns and analysis of mercury in fish. Among fish, there were significant interspecies differences in mercury levels, and there were ethnic differences in consumption patterns. Two methods of examining risk are presented: (1) Hazard Index (HI), and (2) estimates of how much and how often people of different body mass can consume different species of fish. Blacks consumed more fish and had higher HIs than Whites. Even at the median consumption, the HI for Blacks exceeded 1.0 for bass and bowfin, and, at the 75th percentile of consumption, the HI exceeded 1.0 for almost all species. At the White male median consumption, noHI exceeded 1, but for the 95th percentile consumer, the HI exceeded 1.0 almost regardless of which species were eaten. Although females consumed about two thirds the quantity of males, HIs exceeded 1 for most Black females and for White females at or above the 75th percentile of consumption. Thus, close to half of the Black fishermen were eating enough Savannah River fish to exceed HI = 1. Caution must be used in evaluating an HI because the RfDs were developed to protect the most vulnerable individuals. The percentage of each fish species tested that exceeded the maximum permitted limits of mercury in fish was also examined. Over 80% of bowfin, 38% of bass, and 21% of pickerel sampled exceeded 0.5 ppm. The risk methodology is applicable anywhere that comparable data can be obtained. The risk estimates are representative for fishermen along the Savannah River, and are not necessarily for the general populations.  相似文献   
5.
In the present study, we examined the impact of cultural value orientations (i.e., the personally oriented value of individualism, and the socially oriented values of collectivism, familism, romanticism, and spiritualism) on accommodation (i.e., voice and loyalty, rather than exit and neglect, responses to partners' anger or criticism) in heterosexual and gay relationships; and we examined the impact of internalized homophobia (i.e., attitudes toward self, other, and disclosure) on accommodation specifically in gay relationships. A total of 262 heterosexuals (102 men and 162 women) and 857 gays (474 men and 383 women) participated in the present study. Consistent with hypotheses, among heterosexuals and gays, socially oriented values were significantly and positively related to accommodation (whereas the personally oriented value of individualism was unrelated to accommodation); and among gays in particular, internalized homophobia was significantly and negatively related to accommodation. Implications for the study of heterosexual and gay relationships are discussed.  相似文献   
6.
This paper describes the conceptual development of a multi-domain, psychosocial model of ‘Inner Wellbeing’ (IWB) and assesses the construct validity of the scale designed to measure it. IWB expresses what people think and feel they are able to be and do. Drawing together scholarship in wellbeing and international development it is grounded in field research in marginalised, rural communities in the global South. Results from research in India at two points in time (2011 and 2013) are reported. At Time 1 (n = 287), we were unable to confirm an eight-factor, correlated model as distinct yet interrelated domains. However, at Time 2 (n = 335), we were able to confirm a revised, seven-factor correlated model with economic confidence, agency and participation, social connections, close relationships, physical and mental health, competence and self-worth, and values and meaning (five items per domain) as distinct yet interrelated domains. In particular, at Time 2, a seven-factor, correlated model provided a significantly better fit to the data than did a one-factor model.  相似文献   
7.
In this article, I describe an undergraduate course on interethnic relations that I taught at a small, predominantly White, liberal arts college during the 1990s. First, I present the intellectual heart of the course (similarities and differences between Allport's [1954/1979] mainstream perspective and Du Bois' [1903/1969] oft-neglected, alternative perspective on race relations). Subsequently, I discuss the course background and a precipitating incident (verbal conflict between a White male student and a Black female student) that transformed the class. Finally, I reflect on my experiences, as well as individual and institutional factors (gender, institutional racism) that probably affected students' and faculty members' responses. Policy implications for courses on prejudice (and for teachers of such courses) are discussed .  相似文献   
8.
Abstract

Objectives and Participants: Changes in body weight, composition, and size were examined in college freshmen at the beginning (initial, n = 240) and end of fall semester 2007 (n = 214) and the end of spring semester 2008 (n = 205). Methods: Height, weight, body composition, and waist and hip measurements were assessed. Results: Mean weight, body mass index (BMI), absolute and percent body fat all increased significantly over fall semester and the academic year. About 31% of freshmen lost ≥5 lbs. Mean academic year weight gain was 2.6 lbs (entire group) and 6.0 lbs (weight gainers); body fat increased by 4.4 lbs in the weight gainers. A significant correlation (r = .509) was found between weight change and waist circumference change, but not between weight change and waist to hip ratio change. Conclusions: Freshmen weight gain is associated with increases in body fat and waist circumference, which may be troublesome should the trend continue throughout college.  相似文献   
9.
Little is known about the health status of adults living in continuing care retirement communities (CCRC). Using matched-case control, 458 adults from the Health and Retirement Study (HRS) or a CCRC-based sample were compared on total comorbidity, self-rated health, home health services use, and hospitalizations. At year 2, the CCRC sample reported more comorbidities (96%) but significantly better self-rated health (96% good/excellent) than the HRS sample (93% comorbidity, 73% good/excellent; p < .01). There were no significant differences in frequency of home health use or hospitalization. Living in a CCRC appears to be associated with higher self-ratings of health in this sample.  相似文献   
10.
Publishers' announcement  相似文献   
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