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   692篇
  免费   49篇
管理学   79篇
民族学   9篇
人口学   105篇
丛书文集   4篇
理论方法论   87篇
综合类   4篇
社会学   411篇
统计学   42篇
  2024年   3篇
  2023年   11篇
  2022年   11篇
  2021年   14篇
  2020年   18篇
  2019年   36篇
  2018年   44篇
  2017年   58篇
  2016年   33篇
  2015年   42篇
  2014年   35篇
  2013年   115篇
  2012年   27篇
  2011年   55篇
  2010年   17篇
  2009年   20篇
  2008年   29篇
  2007年   30篇
  2006年   20篇
  2005年   15篇
  2004年   13篇
  2003年   10篇
  2002年   9篇
  2001年   5篇
  2000年   9篇
  1999年   10篇
  1998年   5篇
  1997年   4篇
  1996年   5篇
  1995年   6篇
  1994年   2篇
  1993年   4篇
  1992年   3篇
  1991年   5篇
  1990年   3篇
  1989年   2篇
  1988年   2篇
  1986年   2篇
  1985年   3篇
  1984年   2篇
  1982年   1篇
  1976年   2篇
  1975年   1篇
排序方式: 共有741条查询结果,搜索用时 140 毫秒
721.
Entrepreneurship has a leading role in economic development worldwide and, although it has usually been considered as a male dominated activity, recent studies emphasize how significant the contribution of women today is: in 2010, almost 42% of entrepreneurs in the world were, indeed, women (GEM, 2010).  相似文献   
722.
Leadership and strategic management research suggests that the extent to which CEOs influence performance largely depends on the presence or absence of certain factors. These factors may include the characteristics of the task at hand, subordinates, the organization itself or the external environment. Among these factors, a fundamental contingency that has received little empirical attention is an organization's ownership and governance structure—that is, who owns and monitors the organization. In this paper, we outline how different ownership and governance structures can present the opportunity for, or limit, leader influence and empirically examine the extent to which CEO effects on financial performance depend on these structures. Examining organizations in the same industry but with different ownership and governance structures, our results suggest that these structures are closely aligned with the degree to which CEOs influence firm performance. Our findings support the notion that leaders matter most when ownership and governance structures correspond with a weak or ambiguous institutional logic. This study contributes new insight into the “opportunity structure” of CEO influence, that is, the organizational factors that shape leader discretion and, hence, condition the CEO's level of influence over firm performance.  相似文献   
723.
In the early 1990s, unemployment levels increased dramatically in Sweden. Although the effects of unemployment on unemployed individuals are well-documented, research on parental unemployment and children has been neglected. The aim of the present study is to explore the relationship between parental unemployment and children's accident risks in Sweden for the period 1991–1993. Two independent samples are used: the Swedish Level of Living Survey 1991 (original sample 6,733 individuals) and the Swedish Longitudinal Study among Unemployed 1992–1993 (original sample 792). The samples were taken during periods of both low and high unemployment. The results indicate that parental unemployment is associated with increased accident risks among children in 1991, 1992 and 1993. The increased risks do not seem to be due to the effects of adverse selection into unemployment on parental well-being, financial difficulties or alcohol consumption. It is also suggested that low parental well-being is of causal significance within the unemployed group.  相似文献   
724.
Objective. The objective of our research is to examine the impact of New Jersey's welfare reform called the Family Development Program (FDP) on child fostering among children on welfare. Methods. The research and analytical methods we use include an experimental design and probit regressions. Results. Our results show that FDP impacts are confined to children of short‐term welfare recipients (new cases) but affects both African‐American and white children in this welfare group. Among new cases, FDP decreases the probability of African‐American children living in foster families, resulting in a 28 percent change from the baseline prevalence rate of 7.2 percent. In contrast, FDP increases the likelihood of white children living in foster families, leading to a 70 percent change from the baseline occurrence rate of 1.4 percent. Conclusions. We conclude by discussing the policy implications of such segmented impacts of welfare reform for vulnerable child populations.  相似文献   
725.
通过构建理论模型预测FDI的不同进入模式对东道国企业价格-成本盈余(Price-CostMar-gin,PCM)的影响,以及采用固定效应工具面板和经过聚类修正的有效广义矩等不同估计模型,对1991-2001年间的进口和FDI对英国制造业企业PCM竞争规制效应进行的实证研究表明:绿地FDI对利润有负向影响,而并购FDI对利润的影响为正,即绿地FDI对PCM有规制效应,并购FDI会增加PCM。本文是第一篇使用企业数据并区分FDI不同类型进行此问题研究的论文。  相似文献   
726.
Prior research suggests considerable heterogeneity in the advantages of living in a 2‐parent family. Specifically, children living with married biological parents exhibit more favorable outcomes than children living with cohabiting biological parents and with married and cohabiting stepparents. To explain these differences, researchers have focused almost exclusively on differences in the levels of factors such as income, parental relationship quality, and parenting quality across family types. In this study the authors examined whether differences in the benefits associated with these factors might also account for some of the variation in children's cognition and social‐emotional development. Focusing on children at the time they enter kindergarten, they found only weak evidence of differences in benefits across family types. Instead, they found that children living in stepfather families experienced above‐average levels of parental relationship quality and parenting quality, which in turn played a protective role vis‐à‐vis their cognitive and social‐emotional development.  相似文献   
727.
728.
Financial markets have been characterized by boom and bust cycles since the 1980s, while the responsibility for managing retirement wealth has increasingly shifted onto individual households at the same time. Policy makers and experts have expressed concern over rising risk exposure among older householders, who appear to be increasingly exposed to the growing financial risks just as they near retirement. We consider household data from the Federal Reserve’s Survey of Consumer Finances from 1989 to 2010 to analyze the correlation between age and risk exposure. We test whether older householders’ risk exposure has indeed grown over time, whether it has increased more than that of younger householders, whether changes in the demographic composition of older householders have contributed to older households’ rising risk exposure, and the degree to which increases in risk exposure can be traced to a growing concentration of household assets held in stocks and housing and to rising householder indebtedness. Our results indicate that risk exposure has grown more for older householders than for younger ones, that demographic changes among older householders have contributed to additional increases in older householders’ risk exposure, and that the growth of older householders’ risk exposure is driven more by rising risky asset concentration and less by greater indebtedness.  相似文献   
729.
730.
This paper examines the predictive relations between two infant temperamental biases assessed at 4 months and inhibited behavior during the first 2 years of life in three independent samples from two research laboratories. Although each sample used slightly different criteria for classifying infants, the results across samples were consistent. Infants of both genders who displayed high levels of motor activity and distress to unfamiliar events were more inhibited at 14 months of age. By 24 months, there were significant sex differences: Boys identified as high reactive were more inhibited than high reactive girls.  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