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981.
An ergonomics team from the US Army Center for Health Promotion and Preventive medicine evaluated 465 video display terminal (VDT) workstations in a Government office building over an 18-day period. Each workstation evaluation involved an assessment of the worker, the chair, the desk, the keyboard, the pointing device, the monitor, and the office environmental conditions. The team also collected worker pain and injury information. The problems seen during the evaluation were characteristic of most office environments where VDT workstation furniture was purchased before the advent of mouse-driven software. The majority of furniture evaluated was not designed to meet the demands of intensive mouse use for prolonged periods of time. Much of the workstation furniture was not adjustable, chairs lacked adequate back support, and workers assumed non-neutral postures. As a result, more than 35% of the workers evaluated complained of on-the-job pain. New office furniture that is adjustable, adequate desk space and storage space were among the solutions recommended by the ergonomics team. 相似文献
982.
Effects of group therapy on female adolescent survivors of sexual abuse: a pilot study 总被引:1,自引:1,他引:0
Treatment interventions for female sexual abuse survivors was explored through a pilot study examining the relationship between group treatment and adolescent self-image. Self-image was defined as body image, self-reliance, self-control, and impulse-control. An experimental pre-post design was utilized. Participants were 13 female adolescent high school drop-outs with a history of sexual abuse who participated in the National Guard Youth Challenge Program at Camp Shelby in Mississippi. Participants completed the Offer Self- Image Questionnaire for Adolescents. The hypothesis that group therapy was an effective intervention for sexual abuse survivors was not supported; however, this is likely due to the small sample size. Because this was a pilot study, mean trends were observed to see directional changes that may assist future researchers. Observation of mean trends revealed that participants who received group therapy increased in levels of impulse control while the group that did not receive group therapy remained the same. Mean trends also revealed that the experimental group had a decrease in self-reliance whereas the control group maintained their levels of self-reliance. 相似文献
983.
Johnson TE 《Science of aging knowledge environment : SAGE KE》2002,2002(34):re4
This article reviews key events in the genetic analysis of aging in the worm. The events are presented in the form of a timeline and include landmark papers, key meetings, and the development of important funding agencies. I also speculate on events that might appear in this timeline if this review were written in the distant future. 相似文献
984.
Much has been done to identify psychosocial factors influencing risk of vocational injury and prolonged disability. The purpose of this paper is to enhance the ability of injured workers to return to their prior worker role through the identification of the influencing psychosocial perceptions. Psychosocial perceptions may assist in the identification of negative or counterproductive factors that hinder the rehabilitative process. Identifying perceptions are individual centered and focused on the views of injured workers as they proceed through the transition in life following injury. Occupational therapists play a key role in the rehabilitative process of injured workers through enhancing the person-job-environment fit [4]. 相似文献
985.
Thomas Flüeler 《Risk analysis》2001,21(4):787-800
Deregulation, with concurrent pressure on electricity utilities, has fundamentally changed the once-"closed" radioactive waste management system controlled by the so-called "nuclear establishment." Advocacy coalitions may change-who knows in which direction-but policy learning may also take place. This article presents a framework to evaluate the management options for a specified concept of "sustainability." When weighing the different objectives in view of the long-lasting potential danger of radiotoxic substances, the overall goal of a sound waste management system is to demonstrate safety. The first-priority objective of a disposal system, therefore, is its stability so that it can comply with the protection goal, that is, the long-term protection of humans and the environment from ionizing radiation. The complementary objective is flexibility, defined here as intervention potential. Because trade-offs within the "sustainability triangle" of ecology, economy, and society are unavoidable, the concept of "integral robustness"-both technical and societal-is introduced into radioactive waste management. A system is robust if it is not sensitive to significant parameter changes. In the present case, it has to have a conservative, passively stable design with built-in control and intervention mechanisms. With regard to technical implementation, a concept called "monitored long-term geological disposal" is presented. Such an "extended" final disposal concept emphasizes technical robustness, recognizes evaluation demands (for a potential break-off of a project), and enhances process-based transparency. This open approach admittedly sets high challenges with regard to technicalities as well as the institutional setting and the management process. It requires "mutual learning" by and from all stakeholders to achieve a truly sustainable radioactive waste management system. 相似文献
986.
We use data from the Indonesia Family Life Survey to investigate the impact of a major expansion in access to midwifery services on health and pregnancy outcomes for women of reproductive age. Between 1990 and 1998 Indonesia trained some 50,000 midwives. Between 1993 and 1997 these midwives tended to be placed in relatively poor communities that were relatively distant from health centers. We show that additions of village midwives to communities between 1993 and 1997 are associated with a significant increase in body mass index in 1997 relative to 1993 for women of reproductive age, but not for men or for older women. The presence of a village midwife during pregnancy is also associated with increased birthweight. Both results are robust to the inclusion of community-level fixed effects, a strategy that addresses many of the concerns about biases because of nonrandom program placement. 相似文献
987.
In this paper we argue that a movement's longevity depends on its ability to develop and sustain a strong sense of collective identity. We investigate social movement endurance by examining the Rastafari, whose membership is comprised primarily of disadvantaged Jamaicans of African descent. While many social movements fade after a short-lived peak, the Rastafari not only has persisted, but it also has become globally important. Despite its radical posture and its perceived threat to the Jamaican established order, the movement has prevailed for more than six decades. On the basis of a number of concepts derived from different theoretical traditions in social movement theory, we examine the dynamic processes involved in the construction of collective identity among the Rastafari. We are particularly interested in the concepts of "cognitive liberation,""movement culture/boundary structure," and "the politics of signification." These concepts allow us to describe and analyze the key dimensions of the Rastafarian collective identity. This framework, we argue, enhances our understanding of collective identity as well as the processes contributing to social movement longevity. 相似文献
988.
The estimated discount rate of parents is used to test a choice-based intergenerational model of the contribution of environment to the cognitive skills of a child of a given endowment. A lower parental discount rate is shown to imply higher cognitive skills of the young child. In the context of the model, estimates also imply that environmental conditions and human capital formation are not separable. Lesser environmental quality raises the costs of human capital formation in children and lesser human capital reduces parents' demand for environmental quality. Environmental quality differences among families, just like genetic differences, may persist across generations. 相似文献
989.
Thomas J. Fararo 《Sociological Theory》2000,18(3):475-481
This paper aims to communicate some of the value commitments that characterize my approach to formal model building in theoretical sociology. It does this through a narrative method, an autobiographical account of shifts in intellectual interests through various phases of my career: from history to philosophy, from philosophy to sociology, from sociology to mathematics and back, followed by several long-term formal theoretical research programs. One of these, pertaining to the formal representation of institutionalized social action systems, is described in terms of its linkage to interpretive sociology, while also noting its limitations from a theoretical science point of view. By interweaving intellectual biography and intellectual history, the paper also provides some contextual background for appreciating the work of the other contributors to this symposium. 相似文献
990.