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71.
Karsten Hank Johannes Huinink 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2015,67(1):41-58
Substantial regional variation in marriage and fertility patterns continues to exist in Germany. Following a multilevel approach, we exploit longitudinal data from the German Family Panel (pairfam), enhanced by an array of district-level variables, to investigate the extent to which spatial variations in men’s and women’s family formation behaviors result from differences in population composition or from ‘true’ contextual effects. Our multilevel analyses provide evidence for only small—if any—contextual effects on individuals’ family formation behaviors (except for a continuation of significant differences between East and West Germany). However, we still find indication that (1) regional economic circumstances matter in determining individuals’ fertility intentions as well as their transition to first marriage, (2) regional milieus are associated with individuals’ fertility, and that (3) selective family migration takes place. While it seems that social interaction rather than differences in local opportunity structures plays a role here, more research is needed to further substantiate this conclusion. 相似文献
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Johannes Gladitz 《Statistics》2015,49(6):1187-1188
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In the context of the recent recalls of contaminated pet food and lead‐painted toys in the United States, we examine patterns of risk perceptions and decisions when facing consumer product‐caused quality risks. Two approaches were used to explore risk perceptions of the product recalls. In the first approach, we elicited judged probabilities and found that people appear to have greatly overestimated the actual risks for both product scenarios. In the second approach, we applied the psychometric paradigm to examine risk perception dimensions concerning these two specific products through factor analysis. There was a similar risk perception pattern for both products: they are seen as unknown risks and are relatively not dread risks. This pattern was also similar to what prior research found for lead paint. Further, we studied people's potential actions to deal with the recalls of these two products. Several factors were found to be significant predictors of respondents’ cautious actions for both product scenarios. Policy considerations regarding product quality risks are discussed. For example, risk communicators could reframe information messages to prompt people to consider total risks packed together from different causes, even when the risk message has been initiated due to a specific recall event. 相似文献
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Johannes Willms 《Organisationsberatung, Supervision, Coaching》2010,17(3):269-280
The article presents a new model for leadership development: the leadership holarchy. The leadership holarchy can provide orientation in the developmental process and can sharpen the awareness of the coach for challenges and limits in the development of a leader. The model can be used as a diagnostic instrument in consulting and research and for the planning of trainings and seminars. Based on recent literature from personal development in adulthood, different stages of leadership development are described. In addition to the leadership holarchy, the article depicts the points of reference in developmental theory and theory of leadership. The author holds the view that an explicit development-based approach on leadership opens up new perspectives for coaching and consulting. 相似文献
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Ibsen Chivatá Cárdenas Saad S. H. Al‐Jibouri Johannes I. M. Halman Wim van de Linde Frank Kaalberg 《Risk analysis》2014,34(10):1923-1943
The authors of this article have developed six probabilistic causal models for critical risks in tunnel works. The details of the models' development and evaluation were reported in two earlier publications of this journal. Accordingly, as a remaining step, this article is focused on the investigation into the use of these models in a real case study project. The use of the models is challenging given the need to provide information on risks that usually are both project and context dependent. The latter is of particular concern in underground construction projects. Tunnel risks are the consequences of interactions between site‐ and project‐ specific factors. Large variations and uncertainties in ground conditions as well as project singularities give rise to particular risk factors with very specific impacts. These circumstances mean that existing risk information, gathered from previous projects, is extremely difficult to use in other projects. This article considers these issues and addresses the extent to which prior risk‐related knowledge, in the form of causal models, as the models developed for the investigation, can be used to provide useful risk information for the case study project. The identification and characterization of the causes and conditions that lead to failures and their interactions as well as their associated probabilistic information is assumed to be risk‐related knowledge in this article. It is shown that, irrespective of existing constraints on using information and knowledge from past experiences, construction risk‐related knowledge can be transferred and used from project to project in the form of comprehensive models based on probabilistic‐causal relationships. The article also shows that the developed models provide guidance as to the use of specific remedial measures by means of the identification of critical risk factors, and therefore they support risk management decisions. Similarly, a number of limitations of the models are discussed. 相似文献
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Laypeople''s and Experts'' Perception of Nanotechnology Hazards 总被引:1,自引:0,他引:1
Michael Siegrist Carmen Keller Hans Kastenholz Silvia Frey Arnim Wiek 《Risk analysis》2007,27(1):59-69
Public perception of nanotechnology may influence the realization of technological advances. Laypeople's (N=375) and experts' (N=46) perception of 20 different nanotechnology applications and three nonnanotechnology applications were examined. The psychometric paradigm was utilized and applications were described in short scenarios. Results showed that laypeople and experts assessed asbestos as much more risky than nanotechnology applications. Analyses of aggregated data suggested that perceived dreadfulness of applications and trust in governmental agencies are important factors in determining perceived risks. Similar results were observed for experts and laypeople, but the latter perceived greater risks than the former. Analyses of individual data showed that trust, perceived benefits, and general attitudes toward technology influenced the perceived risk of laypeople. In the expert sample, confidence in governmental agencies was an important predictor of risks associated with nanotechnology applications. Results suggest that public concerns about nanotechnology would diminish if measures were taken to enhance laypeople's trust in governmental agencies. 相似文献