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   6039篇
  免费   373篇
  国内免费   40篇
管理学   205篇
劳动科学   1篇
民族学   44篇
人才学   3篇
人口学   334篇
丛书文集   747篇
理论方法论   527篇
综合类   3072篇
社会学   824篇
统计学   695篇
  2024年   11篇
  2023年   64篇
  2022年   57篇
  2021年   49篇
  2020年   139篇
  2019年   126篇
  2018年   120篇
  2017年   144篇
  2016年   116篇
  2015年   160篇
  2014年   411篇
  2013年   791篇
  2012年   322篇
  2011年   412篇
  2010年   264篇
  2009年   261篇
  2008年   275篇
  2007年   291篇
  2006年   290篇
  2005年   256篇
  2004年   265篇
  2003年   342篇
  2002年   341篇
  2001年   275篇
  2000年   215篇
  1999年   75篇
  1998年   63篇
  1997年   68篇
  1996年   34篇
  1995年   23篇
  1994年   31篇
  1993年   7篇
  1992年   19篇
  1991年   10篇
  1990年   3篇
  1989年   3篇
  1988年   8篇
  1985年   18篇
  1984年   12篇
  1983年   11篇
  1982年   25篇
  1981年   21篇
  1980年   5篇
  1979年   5篇
  1978年   12篇
  1977年   1篇
  1976年   1篇
排序方式: 共有6452条查询结果,搜索用时 406 毫秒
991.
This paper utilizes a new data set, compiled by Citizenship and Immigration Canada, Revenue Canada and Statistics Canada, to examine the unemployment experience of Canadian immigrant cohorts over the time period 1980 to 1988. Using the records of unemployment insurance benefits of persons who immigrated to Canada in those years and who filed income tax returns, the unemployment experiences of those people are compared by landing year, gender, level of education, language ability, and country of last permanent residence. The determinants of the proportion of each immigrant cohort that received unemployment insurance benefits are estimated by relating the proportions to landing year, duration of time in Canada, and labour market conditions. Briefly, we find no obvious influences on UI receipt behaviour following the immigration reforms of 1982. However, the recession of 1981–82 had a major impact on incomes which did not recover until 5 or 6 years later. Nevertheless, more generous UI benefits did raise slightly the likelihood of UI receipts. Received: 5 December 1995 / Accepted: 14 August 1996  相似文献   
992.
This paper uses the 1983 Census of Israel to analyze Hebrew speaking skills and the effects of Hebrew fluency on the earnings of adult male immigrants. Hebrew fluency increases with a longer duration in Israel, the presence of children in the household, marrying after immigration, living in an area in which a smaller proportion speak one‘s mother tongue, a younger age at migration, a higher level of schooling and varies by country of birth. Earnings increase monotonically with the use of Hebrew. Speaking English as a second language is associated with higher earnings, even when country of origin is held constant. Received: 9 June 1997/Accepted: 6 November 1997  相似文献   
993.
Empirical research on US immigrants is reviewed: their productivity and assimilation; their contribution and use of public services; and their impact on native Americans. I discuss the characteristics of cohorts of immigrants that enter the United States at different times, and then quantify the assimilation of immigrants, typically in terms of economic productivity of immigrants compared with natives. Few have found quantifiable negative effects of immigrants on native wages or unemployment in local labor markets, but a more general equilibrium approach than has been empirically implemented may be needed to draw any conclusions regarding the distributional consequences of immigration. Received: 22 September 1995 / Accepted: 2 March 1997  相似文献   
994.
Using longitudinal data from the British National Child Development Study, this paper examines gender differences in the determinants of work-related training. The analysis covers a crucial decade in the working lives of this 1958 birth cohort of young men and women – the years spanning the ages of 23 to 33. Hurdle negative binomial models are used to estimate the number of work-related training events lasting at least three days. This approach takes into account the fact that more than half the men and two thirds of the women in the sample experienced no work-related training lasting three or more days over the period 1981 to 1991. Our analysis suggests that reliance on work-related training to improve the skills of the work force will result in an increase in the skills of the already educated, but will not improve the skills of individuals entering the labor market with relatively low levels of education. JEL classification: C25, I21, J24. Received February 9, 1996/Accepted August 14, 1996  相似文献   
995.
In this paper we show that the macroeconomic effects of demographic changes strongly depend on the degree of altruism and on the specification of the intertemporal utility function. We allow for agents either to be altruistic in the sense of Barro (1974) or non-altruistic. In the latter case, generations are heterogeneous like in the „unloved children” model of Weil (1989). In the former case, where the model is a standard Ramsey model with identical agents, we distinguish a Millian and a Benthamite intertemporal utility function. For each of these models, we study the effects of an anticipated and unanticipated permanent decline in population growth as well as the consequences of a baby-boom/baby-bust scenario. Received April 17, 1996/Accepted December 10, 1996  相似文献   
996.
Training and job mobility among young workers in the United States   总被引:3,自引:0,他引:3  
Using data from the National Longitudinal Survey of Youth from 1987 to 1992, the determinants of training and the impact of training on job turnover are examined for young private sector workers in the United States. It is found that the receipt of company training is positively correlated with education, ability, and prior tenure at the job. The results provide only limited evidence that company training reduces turnover. There is substantial evidence, however, that training which is not financed by employers increases job mobility. The results imply that training plays an important role in the job search and job matching process among young workers. JEL classification: J24, J41, J63 Received December 11, 1995/Accepted June 27, 1996  相似文献   
997.
甘肃省出生缺陷1:2配对病例对照研究   总被引:1,自引:0,他引:1  
为了解甘肃省出生缺陷死亡率及易患因素,为“甘肃省出生缺陷干预工程”项目的实施提供可干预的核心因素。根据甘肃地理特点及经济状况,按随机分层整群抽样方法,抽取了4个县,共42个乡为调查点。结果显示四县市婴儿总死亡率15.8‰(98例),出生缺陷死亡率7.7‰。甘肃省出生缺陷前五位的致病因素依次为:母亲孕早期接触农药史;母亲孕前一月服药史;母亲孕期接触农药史;母亲孕早期感染史;既往流产史。  相似文献   
998.
This paper analyses the effects of expected earnings and local markets conditions on the behaviour of young adults with high school diplomas. Decisions to either remain in the parental home or form a new household are modelled jointly with those of either gaining work experience or investing in a university education. Expected lifetime earnings are found to play a crucial role in determining the choice of studying and residing with parents. Poor labour market opportunities discourage young people from working and induce them to study. The cost of housing greatly influences the choice of working and leaving the parental home. Received: 23 March 2001/Accepted: 26 November 2001 All correspondence to Gianna Claudia Giannelli. Helpful comments by two anonymous referees are gratefully acknowledged. Responsible editor: John F. Ermisch.  相似文献   
999.
We examine the role of altruism in determining optimal transfers from a principal (a mother) to selfish agents (her children) in return for attention services. Transfer-attention contracts are studied in a setting in which informational asymmetries arise from the inability of a parent to determine the extent of her children's selfishness. We find a predominating exchange motive for transfers in the symmetric informational regime we study. However, both altruism and exchange are important motives under asymmetric information. We show that altruism facilitates transfer-attention exchange arrangements with certain trade partners under incomplete information, but diminishes trade with others. Received: 19 November 2000/Accepted: 17 May 2001 The paper was written while Edward Seiler was a fellow at the department of Agricultural Economics and Management at the Hebrew University. The authors wish to thank Elad Aharoni for research assistance, and Judith Rivlin, Yacov Tsur, two anonymous referees and seminar participants at the Hebrew University for helpful comments. Responsible editor: Alessandro Cigno.  相似文献   
1000.
The purpose of this paper is to study intergenerational optimal resources sharing when the social planer can choose the retirement age in addition to consumptions and investment. We use the extension of the Diamond analysis by Hu [1979] that incorporates endogenous retirement age. We found that the optimal retirement age is an increasing function of the population growth rate if the elasticity of substitution of old agents' labor for young agents' labor is lower than one. In the millian case, when the size of a population does not matter, and when the elasticity of substitution of old agents' labor for young agents' labor is strictly higher than one, the optimal retirement age is a decreasing function of the population growth rate. In the benthamite case, the change in the optimal retirement age is indeterminate. Received: 19 February 1999/Accepted: 27 February 2001 All correspondence to Bertrand Crettez. We would like to thank Jean-Pierre Vidal for very helpful comments on an earlier draft. An anonymous referee provided insightful comments on a previous version of this paper. Responsible editor: Alessandro Cigno.  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