Fertility among ethnic groups in the USSR

Thirty-six ethnie groups in the USSR are analyzed as to fertility differentials. The analysis is based on data from the 1959 nationwide census. To explain the fertility differentials found, ethnographic and sociological features of these groups are traced as a possible contributing factor. One of the poignant observations of the study is the fact that almost all ethnic groups with fertility above the median are those belonging to Moslem and Buddhist traditions. They are primarily located in the Central Asian republics, the Caucasus, and some parts of southern Siberia. Low fertility levels are by and large associated with the Eastern Orthodox Slavs and the Protestant Balts.Ratios of the number of children aged 0-9 to the number of women in the 20-49 age group are related to independent variables in the following order of importance: traditional religion, percentage of married women in the 20-49 age group, degree of literacy, male-female literacy differential, and sex ratio. The multiple correlation of 0.911 was obtained between the child-woman ratio and the first four of the most important independent variables. Sex ratio appeared significant only after the influence of the percentage of married women was eliminated from the analysis of multiple and partial correlations.The data suggest that the urban-rural differential is a non-linear function of the urban-rural migration. A more complete explanation of the divergence between urban and rural child-woman fertility ratios should be made the subject of separate studies.     

Older and wealthier

The number of elder Americans with six-figure incomes will rise dramatically over the next five years--a boon to providers of health-care services, the travel industry and makers of luxury products.     

Adolescent development in social and community context: a program of research

Search Institute's integrated program of research on the linkages among community, developmental assets, and health outcomes is discussed. Recommendations are made for building a science that is dedicated to exploring pathways to developmental success.     

Producing More with Less? Community Forestry in Durango,Mexico in an Era of Trade Liberalization*

Abstract Through a qualitative case study of peasant‐organized forestry in Durango, Mexico, this paper examines how neoliberal policy reform is reshaping the community forestry sector. Post‐1992 agrarian and forestry laws facilitate the emergence of new forms of association in ejidos (collective property communities created by agrarian reform) and agrarian communities, and reorganize the delivery of forestry technical services. These developments indirectly undermine peasants' capacity to deal with the sector's long‐standing internal problems, putting at risk their ability to provide themselves with the services they need for sustainable community livelihoods and forest exploitation. Nevertheless, this study of a forest peasant federation shows that institutional change is a process peopled by groups of social agents who respond creatively to external structure from local organizational and community contexts. Ethnographic methods can be used fruitfully to study complex interactions between multiple levels of political‐economic structure and local action, which both constrain and provide opportunities for the organization of common‐pool resource management regimes.     

Mythologization of Farming Styles in Australian Broadacre Cropping*

Abstract Farming styles theory, as developed by Jan Douwe van der Ploeg to explain diversity in agriculture, is being considered as a possible tool to assist in targeting of extension in Australia. A farming style is a socially constructed type that reflects the worldviews and strategies of one configuration of farming practice for a particular commodity (or common combination of commodities) in a particular region. The various farming styles in a region represent a repertoire of possible worldviews and strategies. We first conducted focus groups to identify farming styles among Australian broadacre croppers. We then conducted case studies to validate these styles, and to gain further understanding of the rationale of each style. The case studies, however, failed to confirm the styles. The findings instead suggested that the styles which emerged from the focus groups were artifacts of the method. We conclude that focus group methodology legitimized the expression of stereotypical images grounded in local farming discourse and provided an avenue for reification of “mythological” styles, although the styles still provided social control over farmers' activities. Researchers should be aware that focus groups potentially allow the expression of mythology, and should reflect on the validity of data collected by this method.     

Characterizing uncertainty aversion through preference for mixtures

Uncertainty aversion is often modelled as (strict) quasi-concavity of preferences over uncertain acts. A theory of uncertainty aversion may be characterized by the pairs of acts for which strict preference for a mixture between them is permitted. This paper provides such a characterization for two leading representations of uncertainty averse preferences; those of Schmeidler [24] (Choquet expected utility or CEU) and of Gilboa and Schmeidler [16] (maxmin expected utility with a non-unique prior or MMEU). This characterization clarifies the relation between the two theories. Received: 20 February 1998/Accepted: 25 March 1999     

Gastrostomy and children: a review of the literature in learning disabilities

Children with developmental delays often suffer feeding difficulties. It has become common for those with a severe likelihood of malnutrition to be considered for alternative methods of nutritional intake, often a gastrostomy. As part of a pilot study investigating the effects of gastrostomy on the child and their family, we conducted a literature review in order to establish the current areas of research, progress and concern. This paper describes the method and findings of the literature review and concludes with a discussion of the topics raised. The main conclusion is that although the need for gastrostomy in this group of children has been shown to be effective in maintaining adequate weight gain and nutritional intake, the support given to the family prior to, and after the operation is inadequate. Greater emphasis needs to be placed on detailed family assessment as part of the early intervention package. Copyright © 2001 John Wiley & Sons, Ltd.     

Optimal sampling times in population pharmacokinetic studies

We propose a simulation-based approach to decision theoretic Bayesian optimal design. The underlying probability model is a population pharmacokinetic model which allows for correlated responses (drug concentrations) and patient-to-patient heterogeneity. We consider the problem of choosing sampling times for the anticancer agent paclitaxel, using criteria related to the total area under the curve, the time above a critical threshold and the sampling cost.