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排序方式: 共有349条查询结果,搜索用时 950 毫秒
101.
This article analyses the relationship of ethnic prejudice and discriminatory behavioral intentions in Germany. We utilize two representative surveys conducted in 2002 and 2004 ( N = 2,722 and 1,383, respectively) as well as a longitudinal study with three annual measurement points (2002–2004; N = 825). Results show that prejudice is substantially correlated with the respondents' reports of their own discriminatory intentions ( R = .33 to .49). Controlling for additional psychological variables, the cross-lagged, longitudinal analyses support the causal hypothesis that prejudice leads to discriminatory intentions. Additional influences on discriminatory intentions—intergroup threat and intergroup contact—are substantially mediated by ethnic prejudice. Thus, a practical implication of these results is that the reduction of intergroup threat and increment of intergroup contact may well lead to both reduced intergroup prejudice and to less discriminatory behavior .  相似文献   
102.
Prospect theory for continuous distributions   总被引:2,自引:0,他引:2  
We extend the original form of prospect theory by Kahneman and Tversky from finite lotteries to arbitrary probability distributions, using an approximation method based on weak-⋆ convergence. The resulting formula is computationally easier than the corresponding formula for cumulative prospect theory and makes it possible to use prospect theory in future applications in economics and finance. Moreover, we suggest a method how to incorporate a crucial step of the “editing phase” into prospect theory and to remove in this way the discontinuity of the original model.
Mei Wang (Corresponding author)Email:
  相似文献   
103.
Recurrent events in clinical trials have typically been analysed using either a multiple time-to-event method or a direct approach based on the distribution of the number of events. An area of application for these methods is exacerbation data from respiratory clinical trials. The different approaches to the analysis and the issues involved are illustrated for a large trial (n = 1465) in chronic obstructive pulmonary disease (COPD). For exacerbation rates, clinical interest centres on a direct comparison of rates for each treatment which favours the distribution-based analysis, rather than a time-to-event approach. Poisson regression has often been employed and has recently been recommended as the appropriate method of analysis for COPD exacerbations but the key assumptions often appear unreasonable for this analysis. By contrast use of a negative binomial model which corresponds to assuming a separate Poisson parameter for each subject offers a more appealing approach. Non-parametric methods avoid some of the assumptions required by these models, but do not provide appropriate estimates of treatment effects because of the discrete and bounded nature of the data.  相似文献   
104.
In this article we argue that the precautionary principle, as applied to the regulation of science and technology, cannot be considered in any general manner inconsistent with the norms and methods of scientific knowledge generation and justification. Moreover, it does not necessarily curtail scientific‐technological innovation. Our argument flows from a differentiated view of what precaution in regulation means. We first characterize several of the most relevant interpretations given to the precautionary principle in academic debate and regulatory practice. We then use examples of actual precaution‐based regulation to show that, even though science can have varying functions in different circumstances and frames, all of those interpretations recur to scientific method and knowledge, and tend to imply innovation in methods, products, and processes. In fact, the interplay of regulation and innovation in precautionary policy, at least in the case of the interpretations of precaution that our analysis takes into account, could be understood as a way of reconciling the two fundamental science and technology policy functions of promotion and control.  相似文献   
105.
106.
The literature on the health-promoting effects of community work has primarily dealt with the population in retirement age, yet the vast majority of volunteers are people still in the workforce. The aim of this study is to observe the relationship between volunteering and health within the context of working life, considering paid work conditions and motives to volunteer as moderating variables. We conducted an online survey with a sample of Swiss workers employed in different industries. Results show that volunteers with self-determined motives (but not with controlled motives) report lower levels of stress and burnout than non-volunteers. Moreover, volunteers in general (regardless of the quality of motivation) report higher levels of work engagement and well-being. Analyses further reveal an interaction effect for burnout and stress, where the difference between self-determined volunteers and non-volunteers becomes larger with unfavorable working conditions at their paid job, hinting at potential compensatory effects. Implications for future research and the voluntary sector are discussed.  相似文献   
107.
Job security is seen as a very high value by employees regarding their professional objectives. Especially for employees in public service that secure professional status is one of their main reasons for working in public servance. Therefore, any dismissal may have severe negative effects on health of the employees and also negative effects on the image of the employer. From their perspective, an outplacement program could be an expedient element within the employee-life-cycle (recruiting—retention—exit/outplacement). A fair culture of separation in the organizational context in public sector which is accompanied by an outplacement program can give new perspectives to the employees and strengthen the image of the employer. An interview study with clients of an outplacement consultation will be mentioned. The participants were asked about their expectations and experiences with the consultation. Basically, the results clearly show that the consultant has a tremendous importance and is thus one of the most important success factors. If he or she meets the needs of the client, he or she works up the separation and promotes the confidence of his clients, nothing stands in the way of a successful consultation.  相似文献   
108.
With the goal of understanding the development of positive stepchild–stepparent relationships, the researchers focused on turning points characterizing the interaction of adult stepchildren who have a positive bond with a stepparent. Engaging a relational turning points perspective, 38 stepchildren (males and females, ages 25 to 52 years old) who reported a positive stepparent relationship were interviewed, generating 269 turning points which were categorized into 15 turning point types and coded by valence. Turning points occurring most frequently were: prosocial actions, quality time, conflict/disagreement, changes in household/family composition, and rituals. Findings are discussed, including implications for developing and enacting resilient and positive stepchild–stepparent relationships and future directions for researchers wanting to focus on positive family interaction.  相似文献   
109.
Neuropsychoanalysis is an interdisciplinary field that attempts to generate links between psychoanalytic schools and the neurosciences. Historically speaking, neuropsychoanalysis emerged as a response to ‘cognitive’ views of the mind/brain problem, which tended to neglect the influence of emotional and instinctual processes in the constitution, and functioning, of the human mind. Since its origins, neuropsychoanalysis has used case studies, of brain injured individuals undergoing psychoanalytic treatment, to explore how focal damage to specific brain areas is related to changes in non-cognitive domains of the mind, such as emotion, motivation or personality. This approach is a useful contribution to the neurosciences since it allows observing, at the same time, objective and subjective aspects of the mind/brain, thus bridging third and first person methodologies. In this article a neuropsychoanalytic approach to case studies is introduced, describing both its historical roots as well as its present status. Then, a brief case study, of a man with focal damage to the left dorso-lateral prefrontal cortex, who presented with changes in his capacity to intrinsically regulate feelings, is used to exemplify this approach.  相似文献   
110.
According to the “Wisdom of Crowds” phenomenon, a large crowd can perform better than smaller groups or few individuals. This article investigates the performance of share recommendations, which have been published by members of a stock prediction community on the Internet. Participants of these online communities publish buy and sell recommendations for shares and try to predict the stock market development. We collected unique field data on 10,146 recommendations that were made between May 2007 and August 2011 on one of the largest European stock prediction communities. Our results reveal that on an annual basis investments based on the recommendations of Internet, users achieve a return that is on average 0.59 % points higher than investments of professional analysts from banks, brokers and research companies. This means, that on average, investors are better off by trusting the crowd rather than analysts. We furthermore investigate how the postulated theoretical conditions of diversity and independence influence the performance of a large crowd on the Internet. While independent decisions can substantially improve the performance of the crowd, there is no evidence for the power of diversity in our data.  相似文献   
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