全文获取类型
收费全文 | 294042篇 |
免费 | 11994篇 |
国内免费 | 2432篇 |
专业分类
管理学 | 29770篇 |
劳动科学 | 170篇 |
民族学 | 3235篇 |
人才学 | 70篇 |
人口学 | 13871篇 |
丛书文集 | 22593篇 |
理论方法论 | 18737篇 |
综合类 | 135242篇 |
社会学 | 57111篇 |
统计学 | 27669篇 |
出版年
2024年 | 511篇 |
2023年 | 2385篇 |
2022年 | 5077篇 |
2021年 | 6806篇 |
2020年 | 6386篇 |
2019年 | 6216篇 |
2018年 | 6890篇 |
2017年 | 9106篇 |
2016年 | 6964篇 |
2015年 | 7320篇 |
2014年 | 11313篇 |
2013年 | 27326篇 |
2012年 | 16506篇 |
2011年 | 18458篇 |
2010年 | 18379篇 |
2009年 | 18529篇 |
2008年 | 19124篇 |
2007年 | 19399篇 |
2006年 | 18301篇 |
2005年 | 15750篇 |
2004年 | 11263篇 |
2003年 | 8040篇 |
2002年 | 8419篇 |
2001年 | 7613篇 |
2000年 | 4759篇 |
1999年 | 3015篇 |
1998年 | 2119篇 |
1997年 | 1825篇 |
1996年 | 1693篇 |
1995年 | 1506篇 |
1994年 | 1425篇 |
1993年 | 1177篇 |
1992年 | 1230篇 |
1991年 | 1120篇 |
1990年 | 1083篇 |
1989年 | 921篇 |
1988年 | 900篇 |
1987年 | 808篇 |
1986年 | 752篇 |
1985年 | 838篇 |
1984年 | 828篇 |
1983年 | 749篇 |
1982年 | 635篇 |
1981年 | 574篇 |
1980年 | 511篇 |
1979年 | 554篇 |
1978年 | 472篇 |
1977年 | 389篇 |
1976年 | 382篇 |
1975年 | 353篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Extensive sibling conflict is predictive of multiple poor adjustment outcomes during adolescence and early adulthood, but the frequency and developmental impact of such conflict may be conditional on ineffective parenting. Thus, sibling conflict may add to or amplify the negative effects of ineffective parenting on adolescent boys' adjustment. Hypotheses in this study were that: (a) multiple informant measures of problematic parent–child relationships and of sibling conflict would form distinct constructs rather than a single negative family process construct, and (b) ineffective parenting, sibling conflict, and their interaction measured at ages 10 to 12 would predict boys' concurrent status and developmental trajectories for antisocial behavior and peer adjustment across a 4‐year span from ages 12 to 16. Confirmatory factor and latent growth modeling analyses were consistent with these hypotheses, demonstrating the important developmental impact of sibling conflict. 相似文献
992.
The 1998 Korean Survey of Family Income and Expenditures was used to examine the overall consumption and saving behavior of Korean baby boomers and compared the differences in consumption and saving behavior between older and younger boomers. The t -test results indicated that the younger boomers allocated a significantly higher percentage of their expenditures on food away from home, household appliances, transportation and communication than did the older boomers, whereas the older boomers spent higher amounts and allocated larger budget shares on their children's education than did the younger boomers. The results of Ordinary Least-Squares (OLS) regression analysis showed that, holding other factors constant, older boomers not only spent significantly more in the total consumption expenditures and education expenditures, but older boomers also saved significantly less than did younger boomers. 相似文献
993.
We propose methods for monitoring the residuals of a fitted ARIMA or an autoregressive fractionally integrated moving average (ARFIMA) model in order to detect changes of the parameters in that model. We extend the procedures of Box & Ramirez (1992) and Ramirez (1992) and allow the differencing parameter, d to be fractional or integer. Test statistics are approximated by Wiener processes. We carry out simulations and also apply our method to several real time series. The results show that our method is effective for monitoring all parameters in ARFIMA models. 相似文献
994.
Summary Following recent legislation, most social workers in Italy arenow responsible for giving a service to the population of agiven geographical area rather than to any particular categoryof client. The findings suggest that there is some experimentationwith regard to the organisation and composition of neighbourhoodteams and that the trend, not without problems, is towards socialworkers becoming the gatekeepers to financialand other resources in the Social Service Sector for the localpopulation. 相似文献
995.
文章从市场化的程度、贸易和经济的发展、开放梯度战略以及区域经济布局这四个方面剖析了阜新与经济发达地区的巨大差距及产生差距的原因,阐述了阜新的经济转型、产业结构调整及市场化发育与外向经济的依存关系,特别是从引进项目的基础工作、制定相关优惠政策及提高法律意识等方面,指明了阜新进一步对外开放需要解决和注意的问题。 相似文献
996.
Peter Hall Qiwei Yao 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2003,65(2):425-442
Summary. We develop a general methodology for tilting time series data. Attention is focused on a large class of regression problems, where errors are expressed through autoregressive processes. The class has a range of important applications and in the context of our work may be used to illustrate the application of tilting methods to interval estimation in regression, robust statistical inference and estimation subject to constraints. The method can be viewed as 'empirical likelihood with nuisance parameters'. 相似文献
997.
The study investigates Swedish male and female social workers’ assessments and help-giving strategies towards single parents applying for income support. The study was carried out with the help of a vignette distributed as a mail questionnaire. Results show that social workers tend to conform to assessments and help-giving strategies that are consistent with expectations linked to their own gender role. 相似文献
998.
What does sociology have to contribute to our understanding of terrorism? As scholars of gender and the Far Right, we believe that we have much to offer the current debates. In this article, we focus both on contemporary cases of terrorism, the attacks of September 11 and the Oklahoma City bombing, and terrorist movements as gendered: as enactments of masculinity. In particular, we focus on the contemporary white supremacist movement, the most dangerous domestic terrorist threat faced by the USA. We suggest that the ideology and organization of many terrorist groups are saturated with gendered meanings, both as the analytic prism through which they view their situation, and also as a means of political mobilization. 相似文献
999.
This paper proposes a new concept of rural development in an uncertain world. The nature of risk and uncertainty is discussed and risk management is defined as a positive model of economic and social behaviour. Some relevant paradigms for rural development are reviewed and evaluated within the general approach of risk management. It is demonstrated that the proposed view of risk management can effectively combine and reconcile different approaches by highlighting their advantages and shortcomings. Departing from a subjective definition of risk management, we progressively include its social dimensions which introduce both complexity and structure into the process of rural development. 相似文献
1000.