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281.
Abstract

Miller (1985) has claimed that a properly designed research project shows no support for the cultural defense or “politics of lifestyles concern” explanation for the rise of the New Christian Right. This short article argues that Miller's data have little or no bearing on the issues he claims to explore.  相似文献   
282.
Research Notes     
In the summer of 1995, a required MSW course was taught simultaneously to two sections of students at the University of Georgia, 11 on the main campus and 9 at a branch campus. Each section was alternately taught using live instruction or distance learning (two-way interactive television). At the conclusion of the course, students evaluated each method of teaching using Biner’s (1993) instrument for measuring attitudes toward televised courses. Live instruction was rated significantly higher than distance learning. Although distance learning technology has potential for augmenting social work educational resources, it has not yet demonstrated comparable outcomes in terms of student learning.  相似文献   
283.
Exposure to chemical contaminants in various media must be estimated when performing ecological risk assessments. Exposure estimates are often based on the 95th-percentile upper confidence limit on the mean concentration of all samples, calculated without regard to critical ecological and spatial information about the relative relationship of receptors, their habitats, and contaminants. This practice produces exposure estimates that are potentially unrepresentative of the ecology of the receptor. This article proposes a habitat area and quality-conditioned exposure estimator, E[HQ], that requires consideration of these relationships. It describes a spatially explicit ecological exposure model to facilitate calculation of E[HQ]. The model provides (1) a flexible platform for investigating the effect of changes in habitat area, habitat quality, foraging area, and population size on exposure estimates, and (2) a tool for calculating E[HQ] for use in actual risk assessments. The inner loop of a Visual Basic program randomly walks a receptor over a multicelled landscape--each cell of which contains values for cell area, habitat area, habitat quality, and concentration--accumulating an exposure estimate until the total area foraged is less than or equal to a given foraging area. An outer loop then steps through foraging areas of increasing size. This program is iterated by Monte Carlo software, with the number of iterations representing the population size. Results indicate that (1) any single estimator may over- or underestimate exposure, depending on foraging strategy and spatial relationships of habitat and contamination, and (2) changes in exposure estimates in response to changes in foraging and habitat area are not linear.  相似文献   
284.
285.
Dating the decline of Christianity in Britain has a vital bearing on its explanation. Recent work by social historians has challenged the sociological view that secularization is due to long‐term diffuse social processes by asserting that the churches remained stable and popular until the late 1950s and that the causes of decline lie in the social and cultural changes associated with the 1960s. We challenge this interpretation of the evidence. We also note that much of the decline of the churches is explained not by adult defection but by a failure to keep children in the faith. Given the importance of parental homogamy for the successful transmission of religious identity, the causes of decline in one generation may well lie in the experiences of the previous generation. We focus on the disruptive effects of the 1939–45 war on family formation and use survey data to argue for a staged model of decline that is compatible with the conventional gradual view of secularization.  相似文献   
286.
Mobile populations form an increasingly important part of many communities, yet tend to be neglected by problem gambling prevalence research. We explore relationships between problem gambling and the ways in which mobile subgroups use gambling venues. Adopting a combination of quantitative and qualitative techniques, we conduct an exploratory examination of three subgroups – construction workers, ‘grey nomads’, and ‘southerner’ tourists on the Sunshine Coast of Queensland, Australia. The groups displayed substantial differences in venue visitation, gambling behaviour and problem gambling risk. The group with the least discretionary mobility, the construction workers, were most heavily dependent on gambling venues for economic and social relationships. This translated into higher levels of problem gambling risk, which was further mediated by the inter-personal connectedness of individuals. These results suggest that mobility per se does not directly result in higher risk of problem gambling but combines with social isolation to place individuals at risk.  相似文献   
287.
288.
ABSTRACT

A sample of 260 Australian men were surveyed about their experience as nonresident fathers and their contact with their children. Most reported having little input into decisions concerning children's postseparation living arrangements, the amount of child support they paid, and the spending of their child support payments. Many claimed to have very limited say in any parenting decisions, and little or no involvement in children's schools. Fathers' limited parental role was found to be negatively correlated with their ongoing contact and involvement with children, and positively with their reported level of interparental hostility. Many respondents viewed their marginalization as parents as an impediment to their capacity to develop meaningful relationships with their children.  相似文献   
289.
Natural disasters related to hydro-meteorological events have increased during the last few decades, both in frequency and severity. Mexico is heavily exposed to climate change, but has also suffered in the past from climate variability ( Blümel, 2009 ). The new risks oblige the government to develop mitigation processes, while the affected people are implementing strategies of adaptation and resilience-building, mostly at the family and community level. This includes forced migration due to climate change into the slums of megacities or illegal immigration to the United States. The arid, semi-arid and subhumid condition of 49.2 per cent of the territory of Mexico is seriously affected by climate change. In addition, poverty and the lack of jobs have created complex livelihood situations, in which young people leave rural areas, partly due to socio-economic pull factors. In this paper, we address the functional relationships between climate patterns and migration processes in Mexico, highlighting the linkages between the origin of migrants, their economic activity and their vulnerability to extreme events and we discuss long-term climate patterns. Agriculture still uses 78 per cent of the available water in Mexico. In the drylands the competition for water use requires an integrated policy to deal with the new threats from climate change, including mitigation from the top down and adaptation processes from the bottom up to reduce the social vulnerability of the rural population in the highly affected drylands of the central and northern parts of Mexico. The new policy for administering water resources, which promotes the efficient use of an increasingly scarce and polluted resource, still suffers from a lack of participation by the affected rural population. In this paper, we propose an integrated management system from the watershed onwards, involving socio-economic, political, cultural and hydrological variables, to deal with the rising scarcity of water, and the uncertainty and complexity of climate change.  相似文献   
290.
Davis (1977) proposed the use of a kernel density estimate which is the sample characteristic function integrated over (-A(n) , A(n)), where A(n) is chosen to minimize the mean integrated square error of the estimate. The scalar, A(n), is determined by the sample size and the population characteristic function. This paper investigates, in a Monte Carlo study, the mean integrated square error obtained under a procedure suggested by Davis (1977) for estimating A(n) when the population characteristic function is unknown.  相似文献   
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