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   10699篇
  免费   12篇
管理学   1528篇
民族学   100篇
人口学   2431篇
丛书文集   2篇
理论方法论   510篇
综合类   289篇
社会学   4609篇
统计学   1242篇
  2023年   2篇
  2022年   5篇
  2021年   3篇
  2020年   11篇
  2019年   15篇
  2018年   1672篇
  2017年   1661篇
  2016年   1086篇
  2015年   46篇
  2014年   46篇
  2013年   81篇
  2012年   329篇
  2011年   1155篇
  2010年   1051篇
  2009年   793篇
  2008年   827篇
  2007年   1004篇
  2006年   8篇
  2005年   229篇
  2004年   258篇
  2003年   214篇
  2002年   88篇
  2001年   12篇
  2000年   13篇
  1999年   11篇
  1998年   3篇
  1997年   6篇
  1996年   31篇
  1995年   7篇
  1994年   4篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1989年   3篇
  1988年   11篇
  1986年   4篇
  1985年   1篇
  1983年   2篇
  1982年   2篇
  1980年   3篇
  1978年   1篇
  1976年   2篇
  1975年   1篇
  1973年   1篇
  1972年   3篇
  1970年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
73.
74.
Most romantic relationships start with a living apart together (LAT) phase during which the partners live in two separate households. Over time, a couple might decide to move in together, to separate, or to remain together while maintaining their nonresidential status. This study investigates the competing risks that partners in a LAT relationship will experience the transition to coresidence or to separation. We consider the amount of time LAT partners have to travel to see each other to be a key determinant of relationship development. For our statistical analyses, we use seven waves of the German Family Panel Pairfam (2008/2009–2014/2015) and analyze couples in the age group 20–40 years. We distinguish between short-distance relationships (the partners have to travel less than one hour) and long-distance relationships (the partners have to travel one hour or more). Estimating a competing risks model, we find that couples in long-distance relationships are more likely to separate than those living in close proximity. By contrast, the probability of experiencing a transition to coresidence is lower for LAT couples in long-distance than for those in short-distance relationships. Interaction analyses reveal that distance seems to be irrelevant for the relationship development of couples with two nonemployed (unemployed, in education or other inactive) partners.  相似文献   
75.
76.
We investigate whether labor mobility can be a distinct source of growth by studying the productivity impact of business visits (BVs), vis-à-vis that of other well-known drivers of productivity enhancement. Our analysis uses an unbalanced panel—covering on average 16 sectors per year in ten countries during the period 1998–2011—which combines unique and novel data on BVs sourced from the US National Business Travel Association with Organization for Economic Cooperation and Development (OECD) data on R&D and capital formation. We find that mobility through BVs is an effective mechanism to improve productivity, being about half that obtained by investing in R&D. This relevant finding invites viewing short-term mobility as a strategic mechanism and prospective policy tool to overcome productivity slowdowns and foster economic growth.  相似文献   
77.
This paper is an assessment of the impact of child support enforcement and welfare policies on nonmarital teenage childbearing and motherhood. We derive four hypotheses about the effects of policies on nonmarital teenage childbearing and motherhood. We propose that teenage motherhood and school enrollment are joint decisions for teenage girls. Based on individual trajectories during ages 12–19, our analysis uses an event history model for nonmarital teenage childbearing and a dynamic model of motherhood that is jointly determined with school enrollment. We find some evidence that child support policies indirectly reduce teen motherhood by increasing the probability of school enrollment, which, in turn, reduces the probability of teen motherhood. This finding suggests that welfare offices may wish to place greater weight on outreach programs that inform more teenagers of the existence of strong child support enforcement measures. Such programs might reduce nonmarital teen motherhood further and thus reduce the need for welfare support and child support enforcement in the long run.
Lingxin HaoEmail:
  相似文献   
78.
This paper aims to analyse “how” and “why” a company engages in CSR and sustainability. The “how” concerns the features of the firm’s CSR and sustainability approach, defined in terms of a firm’s strategy (implemented issues, initiatives and activities) and organization (organizational structures and roles and managerial systems adopted). The “why” refers to the key determinants, both internal and external, of CSR and sustainability. Finally, how the firm’s CSR and sustainability approach evolves over time and the relation between CSR determinants in various stages of the CSR evolutionary path are also investigated. The research method is based on the longitudinal analysis of a case study concerning a large multinational company operating in the telecommunications industry in Europe. The analysis of the case study shows that sub-cultural differences in the approach to CSR and sustainability may occur across hierarchical levels and functional units. Moreover, embedding CSR and sustainability principles doesn’t follow a linear and continuous process, made by sequential stages. Indeed, it can be characterized by an up and down evolutionary path, based on different stages with a changing emphasis given to CSR and sustainability issues. Finally, we find that the firm CSR and sustainability approach is not an autonomous choice, but it is a consequence of the contingent role played by both the external and the internal drivers and by their relative importance during the company’s CSR history.  相似文献   
79.
In many countries structured investment products are popular among retail investors. We explain the demand for these products using unique field data where we let subjects freely design their “favorite” structured product. Results suggest that the supply with capital protected products (guarantee certificates) might indeed be demand-driven. This does not seem to be the case for other product categories where marketing and sales practices might play a more important role. In a survey among financial practitioners we find furthermore that a demand for capital protected products can be explained by loss aversion and saving motifs, e.g. for buying a house.  相似文献   
80.
This paper examines the quality of the relationship between business managements and works councils in small and medium-sized enterprises and strives for answering the question, which factors determine the quality. As ownership is an important determining factor of the establishment of works councils in small and medium-sized businesses, especially the impact of ownership on this relationship has been investigated. Agency theory and stewardship theory give hints that the owner management can have different impacts on this relationship. In order to test these contradictory hypotheses we have estimated a Heckman selection model to investigate which factors determine the quality of the relationship between business managements and works councils. Our results based on data generated from a survey in small and medium-sized enterprises conducted by the IfM Bonn in the years 2005 and 2006 indicate that ownership has a negative influence on the establishment of works councils, but a positive one on the quality of the relationship between business management and works council. Thus, the hypotheses predicting the existence of stewardship behaviour among owners and the existence of agency behaviour among managers can be confirmed.  相似文献   
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