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981.
A shift away from up-or-out, theconventional promotion system in professional servicefirms, has been explained as part of a wider set ofchanges in internal labor market arrangements andmanagement methods. This is investigated empirically in a sample oflarge partnerships in one profession. Up-or-out was usedby less than one-third of the sample of firms but iscommon among the largest firms. Internal reforms to the professional firm do not fully explainits rarity; up-or-out appears to be adaptable to newforms of management and internal labor market policies.This raises a number of questions about the utility of theoretical explanations of how professionalservice firms work or are changing. 相似文献
982.
Ken C. Winters Timothy Rich 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1998,14(3):213-225
A twin study explored the possible genetic influences on gambling behavior. Male monozygotic (MZ) twins (n = 42) revealed significantly greater similarity on gambling frequency associated with high-action games than male dizygotic (DZ) twins (n = 50). The heritability estimates for involvement in these types of games among males were moderate and significant. All MZ versus DZ comparisons among males for low-action games were nonsignificant, as were MZ versus DZ comparisons among females (n = 63) for both types of games. The findings suggest that genetic influences may be important in the origins of certain types of gambling by men. 相似文献
983.
Since 1964, there has been an expansion in the amount and the variety of state-sponsored and state-sanctioned gambling opportunities throughout the US. At the same time, the number of laws prohibiting cigarette smoking have grown enormously. It is striking how one of these activities is tolerated even encouraged by public policy makers while the other is rapidly being prohibited by them. This paper will examine this phenomenon in three parts: (1) defining what is meant by the ethics of tolerance and contrasting it with the ethics of sacrifice; (2) giving a brief historical synopsis of how the gambling and smoking issues have evolved over time; (3) drawing the implications of a shift to an ethics of tolerance on future public policy issues. 相似文献
984.
985.
986.
Because experiments with Bacillus anthracis are costly and dangerous, the scientific, public health, and engineering communities are served by thorough collation and analysis of experiments reported in the open literature. This study identifies available dose-response data from the open literature for inhalation exposure to B. anthracis and, via dose-response modeling, characterizes the response of nonhuman animal models to challenges. Two studies involving four data sets amenable to dose-response modeling were found in the literature: two data sets of response of guinea pigs to intranasal dosing with the Vollum and ATCC-6605 strains, one set of responses of rhesus monkeys to aerosol exposure to the Vollum strain, and one data set of guinea pig response to aerosol exposure to the Vollum strain. None of the data sets exhibited overdispersion and all but one were best fit by an exponential dose-response model. The beta-Poisson dose-response model provided the best fit to the remaining data set. As indicated in prior studies, the response to aerosol challenges is a strong function of aerosol diameter. For guinea pigs, the LD50 increases with aerosol size for aerosols at and above 4.5 μm. For both rhesus monkeys and guinea pigs there is about a 15-fold increase in LD50 when aerosol size is increased from 1 μm to 12 μm. Future experimental research and dose-response modeling should be performed to quantify differences in responses of subpopulations to B. anthracis and to generate data allowing development of interspecies correction factors. 相似文献
987.
Emily Rose Karen Witten Timothy McCreanor 《Kōtuitui : New Zealand Journal of Social Sciences Online》2013,8(3):191-203
Abstract People without functional access to a car in countries where private vehicles are the predominant form of transport are at a disadvantage. Alternative modes of travel in such settings often do not meet people's mobility needs, creating barriers to participation in work, education, social activities, sport and leisure, and to accessing basic goods and services. In New Zealand, private vehicles have long been prioritised as the mode of personal transport in land transport planning policy. However, this is beginning to change with policy objectives now including improvement of access and mobility for all, and reduction of social exclusion. Despite this there is very little evidence of the experiences of those with mobility or access problems in New Zealand. This article seeks to provide qualitative data about experiences of transport related social exclusion, the efficacy of alternative modes for people's mobility needs, the impacts of these difficulties on people's lives, and the policy implications of these findings. 相似文献
988.
989.
Claire Hofer Nancy Eisenberg Tracy L. Spinrad Amanda S. Morris Elizabeth Gershoff Carlos Valiente Anne Kupfer Natalie D. Eggum 《Social Development》2013,22(2):259-279
Stability and change in mother–adolescent conflict reactions (CRs) and the prediction of CRs from adolescents' earlier behavior problems (and vice versa) were examined with 131 mothers and their adolescents (63 boys). Dyads engaged in a 6‐min conflict discussion twice, 2 years apart [M age was 13 at Time 1 (T1)]. Non‐verbal expressive and verbal CRs during the conflict discussion were coded. Mothers, fathers, and teachers reported on adolescents' problem behaviors. There was inter‐individual (rank‐order) stability for adolescents' CRs whereas mothers' reactions were less stable. Mean levels of mothers' negativity, anger, and positive reactions and adolescents' negativity declined with time. Mothers’ CRs, more often than adolescents’ CRs, predicted and were predicted by adolescents’ problem behaviors in zero‐order correlations. In structural equation models with the stability of the constructs accounted for, adolescents' externalizing problems at T1 predicted higher maternal anger at Time 2 (T2). Mothers' anger and positive CRs at T1 predicted fewer T2 adolescents' internalizing problems. Stability and change in CRs are discussed. 相似文献
990.
Sick Building Syndrome (SBS) involves seemingly healthy individuals experiencing long-lasting symptoms of physical distress in their work settings and is estimated to exist in 20 to 30% of all work settings in the USA. We examined differences in stress, social support and both physical and psychological symptoms reported by hospital personnel working in known SBS sites in Halifax, Nova Scotia (n = 297) with control employees working in relatively SBS-free settings (n = 228). We found that employees reporting that their health had been affected by the building in which they worked and those complaining of poor air quality were more likely to be found in SBS locations. In addition, those people with higher levels of organizational support and marginally higher levels of union support were also more likely to be found in SBS locations. Further analyses revealed that employees with higher role overload and greater family support, but lower levels of organizational support were more likely to report that their own health had been adversely affected by their place of work. Perceptions of poor air quality were predicted by higher levels of role conflict, role overload, and organizational stress and lower levels of organizational support. These results suggest that SBS may not be solely dependent on environmental factors. 相似文献