看美国青少年早孕现象

美国是世界上最发达的国家,随着社会的发展,一些严重的问题也随之暴露出来。出现了每年百多万的10多岁未成年少女怀孕,而且每5个女孩当中就有4个是未婚的少女。这一现象的出现,引起美国政府和社会的重视。     

Socio-political forecasting and management information systems

This paper is an attempt to place the forecasting of socio-political variables in the context of actual information needs of industrial companies. Initially discussion is of the effect of socio-political variables upon companies with a review of this significance for decision makers and decision takers. An attempt is then made to categorise existing forecasting techniques in the context of socio-political data whilst regard is paid to the possible effects of socio-political variables on companies. Discussion is then broadened to a consideration of current practice both in the UK and in the USA. Problems implicit in current practice are commented upon and the paper ends with the conclusion that socio-political forecasting is currently significant to many companies and that there is a major potential role for management scientists to play in the development and implementation of appropriate techniques.     

Crafting the new physician executive

We are at the beginning of a new revolution that will redefine work, the organizations in which the work gets done, and the relationships among organizations. The future for physician executives is imbedded in the phenomenon of such fragmentation and change. As a result, a new class of physician executives is emerging. The physician executive of the future will be an information builder, a visualizer, and a strategist--among other things.     

Cross-state variation in Medicaid programs and female labor supply

Using a pooled cross-section data set from the 1980 through 1993 Current Population Survey March Supplements, we test if different Medicaid benefit levels across states impact the labor supply behavior of female heads of households. The ordinary least square (OLS) results support the prediction that Medicaid expenditures reduce labor supply. Controlling for state fixed or random effects alters the effect of both AFDC and Medicaid on the decision to participate as well as the number of hours worked. We also find that while the effects of program generosity are sensitive to the inclusion of state effects those of variation in eligibility thresholds are not.     

Violence and hostility among families of Vietnam veterans with combat-related posttraumatic stress disorder

The current study provides a portrait of emotional-behavioral functioning within a small sample of Vietnam veterans with combat-related posttraumatic stress disorder (PTSD), their partners, and older adolescent and adult children. Veterans, their partners and children reported moderate-low to moderate-high levels of violent behavior. In addition, partner and veteran hostility scores were elevated relative to gender and age matched norms. Partners also reported heightened levels of psychological maltreatment by veterans. Veterans' combat exposure was positively correlated with hostility and violent behavior among children but unrelated to partner variables. Veterans' reports of PTSD symptoms were positively associated with reports of hostility and violence among children, and hostility and general psychological distress among partners. Veterans' violent behavior was also positively correlated with children's violent behavior, but did not yield significant correlations with other child or partner variables. Findings are discussed in relation to prior work and directions for future research are addressed.     

Teaching and research in quantitative methods in university management schools

Much has been written and said about the education and development of operational researchers and management scientists from a specialist departmental viewpoint. Considerably less attention has been devoted to the role of management schools in this process and, more importantly, in their provision of a general education in quantitative methods for all their postgraduate taught course students. This paper aims to make a contribution towards rectifying this relative neglect. Moreover, it specifically contrasts the two sets of activities and argues that they are largely fulfilling different purposes and satisfying in the main different job markets. The paper also addresses some of the problems of management science researchers within a management school milieu.     

Modelling and measurement in retailing practice

The retailing sector has traditionally attracted the attention of economists and marketing specialists but only comparatively recently, at least in the UK, have management scientists become involved. Yet there is much of a measurement and modelling character in retailing to which the management scientist can contribute most usefully. This paper examines two areas of major practical importance to retailers: labour productivity, store location and size. Basic measurement and the establishment of standards can lead to considerable performance improvements in the first area. The second problem area is strategic rather than operational in essence and lends itself to either mathematical modelling or empirical techniques or to a combination of the two approaches.     

A New Analytic Approach to Urban Differentiation: Occupational Differentiation within Industries

Abstract

Urban-ecological theory predicts that functional differentiation occurs through time in a system of cities. The preponderance of evidence from relevant studies, however, has suggested convergence rather than differentiation. In contrast to previous studies which have limited themselves to an examination of employment in either industrial or occupational categories, this study examines occupational differentiation within industries. This strategy reveals an overall trend of increasing urban differentiation. It appears that consideration of the occupational composition within industries may be an important precondition to the discovery of functional differentiation among urban communities.     

We did it together: a participatory action research study on poverty and disability

This article presents the perspective of both non-disabled and developmentally disabled people working together in a research project on poverty and disability. Our study used a participatory action research approach that challenges the norm of exclusion in the research process. Control of the research agenda has been inclusive and shared to varying degrees in accordance with the needs and desires of the members of an advisory committee of developmentally disabled people living with low income. We reflect on our process of working together according to four principles of participatory action research with disabled people. We discuss our successes and challenges enacting these principles in the hopes that future researchers can build upon our experience to be more inclusive of developmentally disabled people in their work.