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   2998篇
  免费   105篇
管理学   505篇
民族学   25篇
人才学   4篇
人口学   210篇
丛书文集   18篇
理论方法论   341篇
综合类   22篇
社会学   1505篇
统计学   473篇
  2023年   23篇
  2022年   11篇
  2021年   14篇
  2020年   57篇
  2019年   89篇
  2018年   77篇
  2017年   101篇
  2016年   90篇
  2015年   74篇
  2014年   84篇
  2013年   489篇
  2012年   111篇
  2011年   91篇
  2010年   92篇
  2009年   90篇
  2008年   109篇
  2007年   88篇
  2006年   104篇
  2005年   126篇
  2004年   84篇
  2003年   92篇
  2002年   88篇
  2001年   70篇
  2000年   50篇
  1999年   60篇
  1998年   52篇
  1997年   33篇
  1996年   33篇
  1995年   27篇
  1994年   45篇
  1993年   43篇
  1992年   30篇
  1991年   40篇
  1990年   36篇
  1989年   30篇
  1988年   31篇
  1987年   33篇
  1986年   22篇
  1985年   40篇
  1984年   34篇
  1983年   25篇
  1982年   27篇
  1981年   18篇
  1980年   14篇
  1979年   13篇
  1978年   15篇
  1977年   15篇
  1976年   13篇
  1975年   12篇
  1974年   12篇
排序方式: 共有3103条查询结果,搜索用时 328 毫秒
91.
92.
International policy now constantly advocates a need for populations to engage in more physical activity to promote health and to reduce society’s health care costs. Such policy has developed guidelines on recommended levels and intensity of physical activity and implicitly equates health with well-being. It is assumed that individual, and hence social welfare will be enhanced if the activity guidelines are met. This paper challenges that claim and raises questions for public policy priorities. Using an instrumental variable analysis to value the well-being from active leisure, it is shown that the well-being experienced from active leisure that is not of a recommended intensity to generate health benefits, perhaps due to its social, recreational or fun purpose, has a higher value of well-being than active leisure that does meet the guidelines. This suggests rethinking the motivation and foundation of existing policy and perhaps a realignment of priorities towards activity that has a greater contribution to social welfare through its intrinsic fun and possibly social interaction.  相似文献   
93.
94.
ABSTRACT

Samir Amin’s final essay called for the creation of a new international organization of progressive social forces. Here I review evidence from twenty-first century transnational movements germane for understanding the likelihood of the emergence of such an international organization and the issues and sectors most likely to facilitate coalitional unity. More specifically, the ecological crises identified by Amin in the form of global warming and climate change have created an unprecedented global environmental threat capable of unifying diverse social strata across the planet. The climate justice movement has already established a global infrastructure and template to coordinate a new international organization for confronting neoliberal forms of globalization. Pre-existing movement organizing around environmental racism, climate justice in the global South, and recent intersectional mobilizations serve as promising models for building an enduring international organization that will represent subaltern groups and have a substantial impact on world politics.  相似文献   
95.
Payment by results is a relatively new way of giving development aid, where a recipient's performance against pre‐agreed measures determines the amount of aid they receive. Advocates for the mechanism argue it provides donors with both a ready justification for maintaining aid budgets and better results through innovation and autonomy. It has proved popular, with most bilateral aid donors having at least experimented with the mechanism and the variety of measures stretching from individual health workers being paid for each procedure, to national governments being paid for students' test scores. However, there has not been a robust assessment of whether Payment By Results (PbR) achieves its aims for greater effectiveness. I synthesize the evidence from eight projects fully or partially funded by DFID, the recognized world leader on PbR. This represents the best evidence currently available, and is critically analysed using the leading theoretical framework that breaks each agreement into its constituent parts. I find no evidence that PbR leads to fundamentally more innovation or autonomy, with the overall range of success and failure broadly similar to other aid projects. This may partly be due to the current use of Payment by Results, with no readily identifiable examples of projects that truly meet the idealized PbR designs. Advocates of PbR may thus conclude the idea is yet to be tested. I argue PbR does not deal with the fundamental constraints that donors face, and so it is unsurprising that PbR is subject to the normal pressures that affect all aid spending.  相似文献   
96.
97.
Lifetime Data Analysis - CD4-based multi-state back-calculation methods are key for monitoring the HIV epidemic, providing estimates of HIV incidence and diagnosis rates by disentangling their...  相似文献   
98.
99.
Training and provision of assistive devices are considered major interventions to prevent and treat low back pain (LBP) among workers exposed to manual material handling (MMH). To establish the effectiveness of training and provision of assistive devices in preventing and treating LBP an update of a Cochrane literature review was performed to November 2010. Randomised controlled trials (RCTs) and cohort studies with a concurrent control group (CCTs) were included. Nine RCTs (20.101 employees) and nine CCTs (1280 employees) were included for prevention: six more than in the previous version. No study on treatment was found. None of the included RCTs and CCTs provided evidence that training and provision of assistive devices prevented LBP when compared to no intervention or another intervention.  相似文献   
100.
We examine the relationship between income inequality, poverty, and different types of crime. Our results are consistent with recent research in showing that inequality is unrelated to homicide rates when poverty is controlled. In our multi‐level analyses of the International Crime Victimization Survey we find that inequality is unrelated to assault, robbery, burglary, and theft when poverty is controlled. We argue that there are also theoretical reasons to doubt that the level of income inequality of a country affects the likelihood of criminal behaviour.  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