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   5340篇
  免费   152篇
各国政治   168篇
工人农民   219篇
世界政治   332篇
外交国际关系   239篇
法律   3293篇
中国共产党   42篇
中国政治   135篇
政治理论   880篇
综合类   184篇
  2023年   41篇
  2021年   40篇
  2020年   73篇
  2019年   80篇
  2018年   106篇
  2017年   110篇
  2016年   125篇
  2015年   76篇
  2014年   105篇
  2013年   452篇
  2012年   146篇
  2011年   170篇
  2010年   159篇
  2009年   183篇
  2008年   168篇
  2007年   177篇
  2006年   171篇
  2005年   139篇
  2004年   118篇
  2003年   121篇
  2002年   102篇
  2001年   224篇
  2000年   215篇
  1999年   152篇
  1998年   65篇
  1997年   61篇
  1996年   54篇
  1995年   53篇
  1994年   61篇
  1993年   52篇
  1992年   118篇
  1991年   107篇
  1990年   135篇
  1989年   123篇
  1988年   138篇
  1987年   129篇
  1986年   101篇
  1985年   106篇
  1984年   80篇
  1983年   71篇
  1982年   52篇
  1981年   48篇
  1980年   40篇
  1979年   50篇
  1978年   36篇
  1976年   30篇
  1975年   28篇
  1974年   39篇
  1973年   28篇
  1970年   27篇
排序方式: 共有5492条查询结果,搜索用时 218 毫秒
21.
Boubou     
HYDE  H. P. T. 《African affairs》1948,47(187):114-116
He was only a little monkey, a very little one the first timeI saw him, not more than 9 inches tall; and when he died 3 yearslater, fully grown, he did not measure more than a foot anda half.  相似文献   
22.
Although there has been speculation regarding the pervasiveness and nature of judicial decisions regarding life-sustaining medical treatment (LSMT), no attempt has been made to empirically assess their prevalence or the issues they address. An exploratory study utilizing a mail survey of a nationwide random sample (N = 905) of state trial court judges was conducted to provide initial information regarding this decision-making process. Twenty-two percent of the responding judges had heard at least one LSMT case, and judicial review did not appear endemic to particular states. The number of judges hearing LSMT cases dropped from 1975 to 1981 but has increased since then. Three major issues predominate: patient competency, appointment of a surrogate decisionmaker, and resolution of the ultimate issue of forgoing LSMT. Relatively few cases either contested a prior directive's validity or involved imposing sanctions for instituting or forgoing LSMT. Although subject to different interpretations, the results suggest the courts are having a significant impact on certain aspects of the LSMT decision-making process. However, the infrequency with which any one judge is called upon to make an LSMT decision causes concern about the judiciary's ability to respond in a timely and appropriate manner. With their potential for a profound effect on the actions of health care providers, greater attention to this decision-making process is warranted.  相似文献   
23.
越南与中国岭南地区壤土相接,水陆交通便利,自古以来两地政治、经济、文化交流十分频繁,关系颇为密切。17世纪中叶明清鼎革之际,福建(闽)籍高僧拙公和尚及其弟子明行禅师(江西籍)、广东元韶禅师、石濂大汕和尚等中国高僧相继赴越弘扬佛法,成为明末清初中国岭南禅史及  相似文献   
24.
Offender assessment and classification is becoming an increasingly important part of correctional supervision and intervention. Over the last several decades, several different methods and “generations” of offender classification have emerged. Of most value appear to be third-generation, actuarial, dynamic risk/need assessments. With any new correctional strategy, however, there is a need to investigate the use of these risk/need assessments on offender subgroups in order to inform issues, such as reliability and prevalence of criminogenic risk factors. The present study utilized data that were gathered using the Level of Service Inventory-Revised (LSI-R). Results and comparisons of these assessments were investigated and presented for Native American and non-Native American offenders as well as male and female offenders. Discussion of the results, implications, and recommendations for further research are presented.  相似文献   
25.
本文从我国高等职业教育人才培养模式构建的理论基础和遵循的原则入手,结合我国的实际情况,从培养目标、课程体系、师资队伍、培养途径等方面进行探讨,提出构建我国高等职业教育技术应用型人才培养模式的具体措施。  相似文献   
26.
27.
What Do Prosecutors Maximize? Evidence from the Careers of U.S. Attorneys   总被引:1,自引:0,他引:1  
This study examines the performance of chief federal prosecutors(U.S. attorneys) and their subsequent careers. In a sample of570 attorneys in office from 1969 to 2000, the length of prisonsentences is positively related to subsequent favorable careeroutcomes for U.S. attorneys. In contrast, conviction rates donot appear to affect the careers of U.S. attorneys. These resultsare consistent with longer total prison sentences’ beingpersonally beneficial to prosecutors, and prosecutors’maximizing the length of prison sentences. Overall, the resultssuggest that sentence length, as opposed to convictions rates,is the relevant performance metric.  相似文献   
28.
Blood previously acidified with aqueous saturated ammonium chloride solution was extracted with ethyl acetate. The dried extract was subjected to acetonitrile–hexane partition. The acetonitrile portion was analysed for the presence of acidic and neutral drugs by HPLC–DAD (200 mm×2.1 mm I.D. microbore ODS-Hypersil column) and GC–FID (25 m narrow-bore×0.25 mm I.D. HP-5 column with 0.33 μm film thickness). The protocol was found to be suitable for both clinical toxicology (including emergency toxicology) and postmortem toxicology. At least 66 drugs of interest were unequivocally identified by RRTs (HPLC) and UV spectra (DAD) match while another 12 were unequivocally identified by double RRTs match (HPLC and GC). Quantitation was facilitated by incorporating calibration blood standards in each assay batch. The five drugs most commonly encountered in clinical blood specimens (1150 cases) were: paracetamol (47.4% of the cases); chlormezanone (6.6%), theophylline (1.74%), naproxen (1.65%) and mefenamic acid (1.56%). The following drugs were detected in toxicologically significant quantities in postmortem blood specimens (245 cases): phenobarbitone (1.22% of the cases), naproxen (0.82%), chlormezanone (0.82%), theophylline (0.82%), carbamazepine (0.41%) and paracetamol (0.41%).  相似文献   
29.
30.
发展高新技术产业是结构调整和优化的关键。本文就发展高新技术产业在经济结构调整中的关键作用以及如何推动高新技术产业发展等问题进行初步探讨。  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