全文获取类型
收费全文 | 6487篇 |
免费 | 160篇 |
专业分类
各国政治 | 198篇 |
工人农民 | 368篇 |
世界政治 | 363篇 |
外交国际关系 | 239篇 |
法律 | 4402篇 |
中国政治 | 38篇 |
政治理论 | 1011篇 |
综合类 | 28篇 |
出版年
2023年 | 37篇 |
2020年 | 65篇 |
2019年 | 85篇 |
2018年 | 194篇 |
2017年 | 117篇 |
2016年 | 222篇 |
2015年 | 97篇 |
2014年 | 108篇 |
2013年 | 488篇 |
2012年 | 245篇 |
2011年 | 227篇 |
2010年 | 108篇 |
2009年 | 153篇 |
2008年 | 141篇 |
2007年 | 142篇 |
2006年 | 144篇 |
2005年 | 483篇 |
2004年 | 213篇 |
2003年 | 130篇 |
2002年 | 107篇 |
2001年 | 232篇 |
2000年 | 220篇 |
1999年 | 169篇 |
1998年 | 72篇 |
1997年 | 71篇 |
1996年 | 62篇 |
1995年 | 59篇 |
1994年 | 62篇 |
1993年 | 55篇 |
1992年 | 142篇 |
1991年 | 128篇 |
1990年 | 158篇 |
1989年 | 160篇 |
1988年 | 160篇 |
1987年 | 155篇 |
1986年 | 134篇 |
1985年 | 128篇 |
1984年 | 95篇 |
1983年 | 86篇 |
1982年 | 55篇 |
1981年 | 53篇 |
1980年 | 45篇 |
1979年 | 61篇 |
1978年 | 46篇 |
1975年 | 42篇 |
1974年 | 66篇 |
1973年 | 43篇 |
1972年 | 38篇 |
1971年 | 41篇 |
1970年 | 41篇 |
排序方式: 共有6647条查询结果,搜索用时 31 毫秒
821.
822.
823.
824.
825.
Valéry Ridde ? 《Development in Practice》2005,15(1):4-15
The reconstruction of the health system in Afghanistan is in its early stages, and donors have proposed Performance-based Partnership Agreements (PPAs) through which to subcontract the delivery of health services to private organisations, both for-profit and not-for-profit. Beyond ideological debates, this article sets out to explain the model underlying the PPA initiative and sheds light on empirical data concerning the assumed benefits of such an approach. The article studies privatisation and the contracting-out of health services, though there is as yet no information that can demonstrate the superiority of private over public service provision. Similarly, the merits of subcontracting have not been fully proven and such arrangements raise several ethical issues. Where PPAs are to be attempted, it is important to remain cautious and to ensure that operations are organised in such a way as to permit proper comparison. The paper concludes with recommendations to organisations involved in or considering the advantages of PPAs. 相似文献
826.
827.
FRANCIS T. CULLEN 《犯罪学》2005,43(1):1-42
Three decades ago, it was widely believed by criminologists and policymakers that “nothing works” to reform offenders and that “rehabilitation is dead” as a guiding correctional philosophy. By contrast, today there is a vibrant movement to reaffirm rehabilitation and to implement programs based on the principles of effective intervention. How did this happen? I contend that the saving of rehabilitation was a contingent reality that emerged due to the efforts of a small group of loosely coupled research criminologists. These scholars rejected the “nothing works” professional ideology and instead used rigorous science to show that popular punitive interventions were ineffective, that offenders were not beyond redemption, and that treatment programs rooted in criminological knowledge were capable of meaningfully reducing recidivism. Their story is a reminder that, under certain conditions, the science of criminology is capable of making an important difference in the correctional enterprise, if not far beyond. 相似文献
828.
829.
M A Miagkova M V Lushnikova O Iu Polevaia T I Gorbatova A N Akalaev 《Sudebno-meditsinskaia ekspertiza》1991,34(2):43-45
Comparative analysis of ephedrine derivative content in 96 urine specimen obtained from people suspected in abuse with these drugs. Physical and chemical methods of the analysis (gas and thin-layer chromatography) as well as ELISA were used. It was stated that the latter is specific for determination of compounds related to ephedrine by structure and it allows one to detect its analogues in 87 cases. Gas chromatography made it possible to detect ephedrine derivatives in 94 specimen tested and thin-layer chromatography--in 64 specimen tested. The given ELISA may be recommended for medicolegal expert purposes and narcology practice. 相似文献
830.