首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   604篇
  免费   14篇
管理学   156篇
民族学   1篇
人才学   1篇
人口学   90篇
丛书文集   2篇
理论方法论   48篇
综合类   1篇
社会学   215篇
统计学   104篇
  2023年   7篇
  2022年   5篇
  2021年   6篇
  2020年   21篇
  2019年   20篇
  2018年   20篇
  2017年   22篇
  2016年   24篇
  2015年   11篇
  2014年   20篇
  2013年   105篇
  2012年   20篇
  2011年   25篇
  2010年   9篇
  2009年   8篇
  2008年   18篇
  2007年   16篇
  2006年   10篇
  2005年   14篇
  2004年   9篇
  2003年   10篇
  2002年   15篇
  2001年   12篇
  2000年   10篇
  1999年   4篇
  1998年   6篇
  1997年   7篇
  1996年   6篇
  1994年   4篇
  1993年   2篇
  1992年   2篇
  1991年   5篇
  1989年   4篇
  1988年   11篇
  1987年   8篇
  1986年   2篇
  1985年   11篇
  1984年   9篇
  1983年   7篇
  1982年   10篇
  1981年   7篇
  1980年   5篇
  1979年   8篇
  1978年   6篇
  1977年   11篇
  1976年   10篇
  1975年   12篇
  1974年   10篇
  1973年   9篇
  1970年   3篇
排序方式: 共有618条查询结果,搜索用时 15 毫秒
41.
42.
Much of the existing scholarly works portray institutional voids (IVs) in emerging economies as impeding forces against the development of new ventures. However, little attention has been paid to how such voids generate positive outcomes in emerging market new ventures. Drawing on the institutional theory, we propose IVs as crucial enablers of new venture internationalization. In addition, we investigate both how and when IVs enhance the degree to which new ventures internationalize by examining international learning effort (ILE) as a mediator and two domestic market environmental factors (i.e., environmental dynamism and competitive intensity) as important contingencies. We test our moderated mediation model using primary data gathered from 211 new ventures from Ghana. We found that ILE mediates the relationship between IVs and new venture internationalization and that both environmental dynamism and competitive intensity moderate the indirect relationship between home-country IVs and new venture internationalization. We discuss the theoretical and practical implications of this study.  相似文献   
43.
Public Organization Review - Challenges encountered in offsetting medical bills propelled the establishment of National Health Insurance Scheme (NHIS) to cater for the formal sector and Community...  相似文献   
44.
Social scientists often estimate models from correlational data, where the independent variable has not been exogenously manipulated; they also make implicit or explicit causal claims based on these models. When can these claims be made? We answer this question by first discussing design and estimation conditions under which model estimates can be interpreted, using the randomized experiment as the gold standard. We show how endogeneity – which includes omitted variables, omitted selection, simultaneity, common-method variance, and measurement error – renders estimates causally uninterpretable. Second, we present methods that allow researchers to test causal claims in situations where randomization is not possible or when causal interpretation could be confounded; these methods include fixed-effects panel, sample selection, instrumental variable, regression discontinuity, and difference-in-differences models. Third, we take stock of the methodological rigor with which causal claims are being made in a social sciences discipline by reviewing a representative sample of 110 articles on leadership published in the previous 10 years in top-tier journals. Our key finding is that researchers fail to address at least 66% and up to 90% of design and estimation conditions that make causal claims invalid. We conclude by offering 10 suggestions on how to improve non-experimental research.  相似文献   
45.
Altruism and social solidarity: Envisioning a field of specialization   总被引:1,自引:1,他引:0  
Conclusion This article has presented a vision of what a field of altruism and social solidarity could potentially involve. An additional perspective on the nature of this field and how it could contribute to the discipline and to society is provided by the science of psychology. In the last decade a fundamental new orientation has developed in this discipline, growing from the pioneering work of Martin E.P. Seligman. Generally identified as “positive psychology” it represents a shift from a focus on trying to understand and find solutions to mental illness and various pathologies of thought and behavior in a “disease model” to a focus on human strengths, virtues, and other positive characteristics. This shift in focus is regarded as making a direct contribution to understanding what is best in human emotions and traits and how society can support the psychological flourishing of individuals. This new perspective in turn provides increased awareness of how the problems studied in the disease model can more effectively be prevented (Seligman, 2003, 2005). The importance of this focus on the positive for sociology and a call to action is stated by Seligman (2003): The third pillar of positive psychology is the study of positive institutions and positive communities.  相似文献   
46.
A team building activity, the image exchange, was helpful to interdisciplinary teams in clarifying perceptions and opinions of participants about the roles of each discipline (child welfare, domestic violence, mental health, and substance abuse workers) at a five-day interdisciplinary training workshop. Discussion of team members’ perceptions and views provided opportunities to develop insights about misperceptions. Training in team development and role clarification provided a foundation for the development of effective interdisciplinary collaboration, which may improve interdisciplinary practice.Dr. Packard is an Associate Professor and Dr. Jones is a Professor in the School of Social Work at SDSU. At the time of writing, Ms. Nahrstedt was a Research Assistant in the School of Social Work at SDSU. This project was funded by a grant from the U.S. Department of Health and Human Services, Administration for Children, Youth, and Families.  相似文献   
47.
This study assesses the fire safety risks associated with compressed natural gas (CNG) vehicle systems, comprising primarily a typical school bus and supporting fuel infrastructure. The study determines the sensitivity of the results to variations in component failure rates and consequences of fire events. The components and subsystems that contribute most to fire safety risk are determined. Finally, the results are compared to fire risks of the present generation of diesel-fueled school buses. Direct computation of the safety risks associated with diesel-powered vehicles is possible because these are mature technologies for which historical performance data are available. Because of limited experience, fatal accident data for CNG bus fleets are minimal. Therefore, this study uses the probabilistic risk assessment (PRA) approach to model and predict fire safety risk of CNG buses. Generic failure data, engineering judgments, and assumptions are used in this study. This study predicts the mean fire fatality risk for typical CNG buses as approximately 0.23 fatalities per 100-million miles for all people involved, including bus passengers. The study estimates mean values of 0.16 fatalities per 100-million miles for bus passengers only. Based on historical data, diesel school bus mean fire fatality risk is 0.091 and 0.0007 per 100-million miles for all people and bus passengers, respectively. One can therefore conclude that CNG buses are more prone to fire fatality risk by 2.5 times that of diesel buses, with the bus passengers being more at risk by over two orders of magnitude. The study estimates a mean fire risk frequency of 2.2 x 10(-5) fatalities/bus per year. The 5% and 95% uncertainty bounds are 9.1 x 10(-6) and 4.0 x 10(-5), respectively. The risk result was found to be affected most by failure rates of pressure relief valves, CNG cylinders, and fuel piping.  相似文献   
48.
49.
Samuel Eilon 《Omega》1979,7(3):173-177
  相似文献   
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号