A Nonstationary Cylinder–Based Model Describing Group Dispersal in a Fragmented Habitat

□ A doubly nonstationary cylinder-based model is built to describe the dispersal of a population from a point source. In this model, each cylinder represents a fraction of the population, i.e., a group. Two contexts are considered: The dispersal can occur in a uniform habitat or in a fragmented habitat described by a conditional Boolean model. After the construction of the models, we investigate their properties: the first and second order moments, the probability that the population vanishes, and the distribution of the spatial extent of the population.     

Sources of Population Aging in More and Less Developed Countries

We provide the first global assessment of the sources of population aging by tracing its origins to the demographic histories of more and less developed countries. In more developed countries, improvements in survival among successive cohorts have accounted for the large majority of the recent increase in the population's mean age. Improved survivorship and declines in the growth rate of births have made roughly equal contributions to the aging that is occurring in less developed countries. Aging is more rapid in less developed countries because the number of births has declined faster, with China and India making large contributions. Use of the proportion of the population above age 65, 70, or 75 as measures of aging produces results similar to those using the mean age. Mortality decline becomes an even larger contributor to aging using all these measures, and its contribution grows as age advances.     

Caste,Class, and Urbanization: The Shaping of Religious Community in Contemporary India

Building on the implications of qualitative work from India and urbanism theories, I aim to understand whether religious bonding social capital in contemporary India increases with greater urbanization and whether such increases are moderated by caste or social class position. Results from multinomial logistic regression on 1,417 Hindu respondents in a nationally representative sample of India (World Values Survey-India 2001) indicate that religious bonding is fostered by urbanism and that this association is stronger for upper castes. But there is little evidence that social class similarly moderates the association between urbanism and religious bonding. In light of these findings, religious bonding might be better understood as rooted in the interaction of caste dynamics and changes in the urban environment, rather than as a result of greater affluence. The data are also consistent with work underscoring the importance of disentangling social class and caste among Hindus in contemporary India.     

A Time-Lag Analysis of the Relationships Among PISA Scores,Scientific Research Publication,and Economic Performance

Due to the poor performance of US students in international math and science tests, many authors worry that the US lead in science is in jeopardy. A recent study by Chen and Luoh (Soc Indic Res 96: 133–143, 2010) challenged this pessimistic view by delinking test performance and labor force quality. It was found that measures such as researchers per capita or scientific journal articles per capita can better account for economic performance. Because it takes time for education and R&;D to yield returns, this project replicated the preceding study using a time-lag structure. Although the results partly concur with previous findings, it is important to point out that GDP might depend on multiple variables acting together. Instead of solely focusing on reforming STEM education as partly measured by international test scores, improving the R&;D infrastructure and openness in trade could also be crucial to the future of the economy.     

Imagined past,present and futures in Murray–Darling Basin communities

Over the past three decades, irrigation-dependent rural communities in Australia's Murray–Darling Basin have experienced profound economic, social and environmental changes, which they are attempting to accommodate through local government policy. As a contribution to participatory policy design research, in consultation with local governments we carried out focus groups to explore diversity of individuals’ imagined past and present in two rural communities. This was followed by group development of a diverse range of future scenarios and agreement to three likely scenarios. The research identified presence or absence of three underlying themes – irrigation, innovation and inflow of people – that plausibly drive change in these rural communities. These themes are likely to be common to many rural communities that have depended on irrigated agriculture. They provide an example of participatory policy-making, as distinct from the historically employed top-down policy development that has occurred in the Murray–Darling Basin. Because of the diversity of perceptions of past, present and futures, and the ultimate adoption of business-as-usual within the final local government plans, the research emphasises the need to put effort into community deliberations to build cohesion and share ownership of the process for delivering locally nuanced community policy.     

The Impact of a Substance Abuse Disorder on the Well-Being of Family Caregivers of Adults With Mental Illness

ABSTRACT

The impact that substance use has on an individual with mental illness has been documented; however, little is known about the impact that this may have for a family caregiver. Data was collected in a cross sectional study using mailed questionnaires to a convenience sample of family members of persons with mental illness (n = 110). Hierarchical linear regression analysis was used to determine the impact of substance use status upon four measures of well-being within a stress-coping model. The variables within the model were able to account for a significant proportion of the variance in each of the measures: perceptions of burden, depression, anxiety and physical health status (R² = .419 to .202). However, substance use status was not a significant predictor in any of these equations. Symptomatology and a measure of specific social support were the most significant predictors of burden (β = .345, p < .001 and β = .330, p < .001). Perceptions of caregiver burden were found to be the most significant predictor in each of the other three analyses (β = .515, p < .000; β = .511, p < .000; β = ? .571, p < .000). Results of this study suggest that substance use may not be as important as the other predictors included in the model in determining the well-being of family caregivers.     

Our American Heritage

This article offers a contextual analysis of contemporary immigration issues impacting the institutions in the United States, in particular the school. It discusses the importance of addressing this theme in the classroom and presents its curricular value in the elementary and middle school social studies and interdisciplinary curricula. Using a picture book thematic text set on the topic of immigration allows for multiple curricular venues and connections through which teachers can address the complexities of immigration. Included is a recommended thematic text set annotated bibliography of twenty-three picture books of different reading levels about historical and mostly contemporary immigration issues. This annotated bibliography is a valuable curriculum resource for teachers because it supports the social studies’ curriculum and its integration with other subject areas, such as language arts and the arts. Each book's bibliographical information offers teachers suggested teaching focal themes and content knowledge, target processes of inquiry and discussion, and attitudinal dispositions that can be fostered.     

‘Tumult and Silence’ in the Study of the American Slave Revolts

Throughout the twentieth century, scholars of the American slave revolts were concerned primarily with what the revolts revealed about the character of slavery and those who resisted it. Recently, in a shift in perspective that has not been fully appreciated, several historians have used the methods of micro-history to focus attention instead on the process by which stories of the revolts were composed. The emphasis of this new approach on silences in the historical record accounts for its immense interest to the historical profession, as well as for its profound limitation as a contribution to our understanding of American slavery.