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101.
James Turner MD Jennifer Bauerle PhD Adrienne Keller PhD 《Journal of American college health : J of ACH》2013,61(4):323-326
Abstract Objective: Determine rate of college student alcohol-related vehicular traffic fatalities in Virginia during 2007. Participants: Undergraduates at colleges and universities in Virginia. Methods: Institutions with membership in the American College Health Association were invited to participate in a survey. Data collected from institutional reports of student deaths due to vehicular accidents. Results: Twenty-four institutions were invited to participate. Sixteen responded (response rate = 67%), comprising total enrollment of 117,100 for 17- to 24-year-olds (56% of total college population in state). Five traffic deaths were reported, representing 4.3 deaths per 100,000 students. Based on statewide statistics that estimate alcohol contributes to 38.9% of traffic deaths, rate of alcohol-related motor vehicle deaths is 1.7 deaths per 100,000 college students in Virginia, which is 89% lower than leading national estimates. Conclusions: These findings suggest that past estimates of alcohol-related vehicular deaths among college students are overstated. 相似文献
102.
A. G. Keller 《Journal of the American Statistical Association》2013,108(49-50):62-64
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The authors present a management-of-self model of supervision that is currently being used in the graduate training program in marriage and family therapy at Virginia Polytechnic Institute and State University. The major proposition of the model is that as the supervisee comes to understand how family of origin and family constellation patterns learned in the past are reenacted within the therapeutic context, he/she can then interrupt those patterns of interaction that tend to inhibit his/her therapeutic effectiveness. 相似文献
105.
John DW Morecroft 《Omega》1983,11(2):131-142
This paper examines the linkages between system dynamics and the Carnegie School in their treatment of human decision making. It is argued that the structure of system dynamics models implicitly assumes bounded rationality in decision making and that recognition of this assumption would aid system dynamicists in model construction and in communication with other social science disciplines. The paper begins by examining Simon's ‘principle of bounded rationality’ which draws attention to the cognitive limitations on the information gathering and processing powers of human decision makers. Forrester's ‘Market Growth Model’ is used to illustrate the central theme that system dynamics models are portrayals of bounded rationality. Close examination of the model formulation reveals decision functions involving simple rules of thumb and limited information content. Finally, there is a discussion of the implications of Carnegie philosophy for system dynamics as it affects communication, model structuring, model analysis and future research. 相似文献
106.
Individual valuation of a binary lottery at values less than the lottery’s worst outcome has been designated as the “uncertainty effect”. Our paper aims to explore the boundary conditions of the uncertainty effect by investigating a plausible underlying process and proposing two possible methods. First, we examine how providing an exogenous evaluation opportunity prior to judging the value of the lottery affects individuals’ judgments, and find that first valuing the worst outcome and then the lottery eliminates the uncertainty effect. Second, we explore whether introducing additional cognitive load dampens how far decision makers correct their initial evaluations, and find that additional cognitive load is able to eliminate the uncertainty effect. 相似文献
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Perception of Mobile Phone and Base Station Risks 总被引:1,自引:0,他引:1
Perceptions of risks associated with mobile phones, base stations, and other sources of electromagnetic fields (EMF) were examined. Data from a telephone survey conducted in the German- and French-speaking parts of Switzerland are presented (N = 1,015). Participants assessed both risks and benefits associated with nine different sources of EMF. Trust in the authorities regulating these hazards was assessed as well. In addition, participants answered a set of questions related to attitudes toward EMF and toward mobile phone base stations. According to respondents' assessments, high-voltage transmission lines are the most risky source of EMF. Mobile phones and mobile phone base stations received lower risk ratings. Results showed that trust in authorities was positively associated with perceived benefits and negatively associated with perceived risks. People who use their mobile phones frequently perceived lower risks and higher benefits than people who use their mobile phones infrequently. People who believed they lived close to a base station did not significantly differ in their level of risks associated with mobile phone base stations from people who did not believe they lived close to a base station. Regarding risk regulation, a majority of participants were in favor of fixing limiting values based on the worst-case scenario. Correlations suggest that belief in paranormal phenomena is related to level of perceived risks associated with EMF. Furthermore, people who believed that most chemical substances cause cancer also worried more about EMF than people who did not believe that chemical substances are that harmful. Practical implications of the results are discussed. 相似文献
110.
Thomas E. Keller Kathleen Wetherbee Nicole S. Le Prohn Vincent Payne Kelly Sim Elena R. Lamont 《Children and youth services review》2001,23(12):1288
Formal kinship foster care is an increasingly common form of out-of-home placement, and several important distinctions between kinship care and non-relative foster care have been identified. The present study evaluated the behavior of kinship foster children in comparison to non-relative foster children and children in the general population. A geographically and ethnically diverse sample of foster children (N=240) was assessed for competence and problem behaviors using the Child Behavior Checklist (CBCL: Achenbach, 1991). Kinship foster children closely resembled children in the general population but differed significantly from their counterparts in non-relative foster care, who consistently scored lower on competence and higher on problem behaviors. Substantial proportions of non-relative foster children were in the clinical range on most CBCL measures, but kinship foster children were no more likely than children from the general population to score above clinical cut-offs. Differences between kinship and non-kinship foster children became less dramatic after accounting for child race and gender, which were both associated with kinship status. Child race had a strong main effect for almost all types of problem behaviors, with children of color showing significantly less problematic behavior. Discussion of these results centers on potential explanations for the observed variations in child behavior by kinship status and race. 相似文献