全文获取类型
收费全文 | 9972篇 |
免费 | 274篇 |
专业分类
各国政治 | 382篇 |
工人农民 | 427篇 |
世界政治 | 750篇 |
外交国际关系 | 382篇 |
法律 | 6316篇 |
中国政治 | 72篇 |
政治理论 | 1878篇 |
综合类 | 39篇 |
出版年
2023年 | 58篇 |
2021年 | 66篇 |
2020年 | 123篇 |
2019年 | 175篇 |
2018年 | 231篇 |
2017年 | 210篇 |
2016年 | 231篇 |
2015年 | 135篇 |
2014年 | 204篇 |
2013年 | 978篇 |
2012年 | 240篇 |
2011年 | 279篇 |
2010年 | 204篇 |
2009年 | 253篇 |
2008年 | 272篇 |
2007年 | 263篇 |
2006年 | 255篇 |
2005年 | 196篇 |
2004年 | 244篇 |
2003年 | 221篇 |
2002年 | 181篇 |
2001年 | 480篇 |
2000年 | 447篇 |
1999年 | 323篇 |
1998年 | 137篇 |
1997年 | 137篇 |
1996年 | 103篇 |
1995年 | 105篇 |
1994年 | 104篇 |
1993年 | 87篇 |
1992年 | 221篇 |
1991年 | 222篇 |
1990年 | 240篇 |
1989年 | 222篇 |
1988年 | 228篇 |
1987年 | 229篇 |
1986年 | 187篇 |
1985年 | 191篇 |
1984年 | 166篇 |
1983年 | 147篇 |
1982年 | 105篇 |
1981年 | 114篇 |
1980年 | 73篇 |
1979年 | 121篇 |
1978年 | 77篇 |
1975年 | 65篇 |
1974年 | 87篇 |
1973年 | 80篇 |
1972年 | 60篇 |
1970年 | 54篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
Brigadier‐General Sir Percy Sykes Gold Medallist of the Royal Geographical Royal Empire Societies. K.C.I.E. C.B. C.M.G. 《亚洲事务》2013,44(2):300-312
This article concentrates almost entirely on the events of 1971 and the author's involvement in the “sometimes complicated and frustrating negotiations and consultations” which led up to the signing at the end of 1971 of the various Treaties of Friendship as Britain withdrew from the Gulf, leaving behind a number of independent states, including the United Arab Emirates. 相似文献
932.
933.
K. H. F. Dyson 《West European politics》2013,36(2):166-187
This article represents an attempt to analyse the complex historical processes of political change in Western Europe in the context of an explicit frame of enquiry. It is concerned to establish not only that the past illuminates the present but also that conceptual rigour and the purposive use of analysis provided by a framework of general ideas is as much relevant to making sense of the past as of the present. The model is a deliberate simplification and, of course, open to refinement. Its virtue is parsimony; its purpose, to enable indentification of the predominant type of political organisation in a concrete political situation. 相似文献
934.
935.
Bernhard König Alexander Tipold Anna Gamper Nikolaus Pitkowitz Peter Feyl Gunter Ertl 《Juristische Bl?tter》2008,130(5):336-340
Ohne Zusammenfassung 相似文献
936.
937.
Claire E.V. French Cynthia G. Jensen Susan K. Vintiner Douglas A. Elliot Susan R. McGlashan 《Forensic Science International Supplement Series》2008,178(1):1-6
There are a number of forensic cases in which the identification of the epithelial cell type from which DNA originated would provide important probative evidence. This study aimed to develop a technique using histological staining of fixed cells to distinguish between skin, buccal and vaginal epithelium. First, 11 different stains were screened on formalin-fixed, wax-embedded cells from five women. Samples were analysed qualitatively by examining staining patterns (colour) and morphology (absence or presence of nuclei). Three of the staining methods – Dane's, Csaba's and Ayoub-Shklar – were successful in distinguishing skin epithelial cells from buccal and vaginal. Second, cells were smeared directly onto slides, fixed with one of five fixatives and stained with one of the three stains mentioned above. Methanol fixation, coupled with the Dane's staining method, specific to keratin, was the only technique that distinguished between all three cell types. Skin cells stained magenta, red and orange and lacked nuclei; buccal cells stained predominantly orange–pink with red nuclei; while vaginal cells stained bright orange with orange nuclei and a blue extracellular hue. This staining pattern in vaginal cells was consistent in samples collected from 50 women aged between 18 and 67. Identification of cell type from unlabelled micrographs by 10 trained observers showed a mean success rate of 95%. The results of this study demonstrate that histological staining may provide forensic scientists with a technique for distinguishing between skin, buccal and vaginal epithelial cells and thus would enable more conclusive analyses when investigating sexual assault cases. 相似文献
938.
Managing incidental findings in human subjects research: analysis and recommendations. 总被引:8,自引:8,他引:0
Susan M Wolf Frances P Lawrenz Charles A Nelson Jeffrey P Kahn Mildred K Cho Ellen Wright Clayton Joel G Fletcher Michael K Georgieff Dale Hammerschmidt Kathy Hudson Judy Illes Vivek Kapur Moira A Keane Barbara A Koenig Bonnie S Leroy Elizabeth G McFarland Jordan Paradise Lisa S Parker Sharon F Terry Brian Van Ness Benjamin S Wilfond 《The Journal of law, medicine & ethics》2008,36(2):219-48, 211
No consensus yet exists on how to handle incidental findings (IFs) in human subjects research. Yet empirical studies document IFs in a wide range of research studies, where IFs are findings beyond the aims of the study that are of potential health or reproductive importance to the individual research participant. This paper reports recommendations of a two-year project group funded by NIH to study how to manage IFs in genetic and genomic research, as well as imaging research. We conclude that researchers have an obligation to address the possibility of discovering IFs in their protocol and communications with the IRB, and in their consent forms and communications with research participants. Researchers should establish a pathway for handling IFs and communicate that to the IRB and research participants. We recommend a pathway and categorize IFs into those that must be disclosed to research participants, those that may be disclosed, and those that should not be disclosed. 相似文献
939.
BERTIE AHERN T.D. 《今日中国(英文版)》2010,(6):26-26
IN 2010, in the midst of economic turmoil, Irish society is enriched because of its close friendship with China and the Chinese people; a friendship that is based on mutual respect, cultural understanding and trust. 相似文献
940.
Shaun L. Gabbidon Leslie K. Kowal Kareem L. Jordan Jennifer L. Roberts Nancy Vincenzi 《American Journal of Criminal Justice》2008,33(1):59-68
This paper examines race-based peremptory challenges. Such challenges occur during the voir dire jury selection process. The process allows both the defense and the prosecution to strike jurors who they believe will not
decide cases fairly. However, in the case of Batson v. Kentucky 476 U.S. 79 (1986), the Supreme Court ruled that race could not be used as a factor in eliminating prospective jurors. This
paper examines federal litigation for five years in which it was alleged that race was used as a factor in removing a juror.
An examination of the cases revealed that most of the cases involved sole male litigants who allege that there were multiple
race-based peremptory challenges used in their cases. Moreover, most of the cases that led to the allegations involved violent
offenses. Other case characteristics are noted, but of most significance was the finding that most appellants lost their cases.
As such, the courts felt that most of the challenges were, in fact, race neutral. The implications of this research are discussed.
This study was funded by an undergraduate research grant from Penn State University. 相似文献