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   15454篇
  免费   200篇
各国政治   644篇
工人农民   1361篇
世界政治   613篇
外交国际关系   567篇
法律   9132篇
中国政治   48篇
政治理论   3235篇
综合类   54篇
  2020年   82篇
  2019年   102篇
  2018年   1383篇
  2017年   1350篇
  2016年   1162篇
  2015年   180篇
  2014年   160篇
  2013年   825篇
  2012年   342篇
  2011年   1054篇
  2010年   1145篇
  2009年   719篇
  2008年   908篇
  2007年   870篇
  2006年   200篇
  2005年   218篇
  2004年   319篇
  2003年   310篇
  2002年   162篇
  2001年   280篇
  2000年   236篇
  1999年   224篇
  1998年   106篇
  1997年   91篇
  1996年   89篇
  1995年   92篇
  1994年   97篇
  1993年   68篇
  1992年   122篇
  1991年   159篇
  1990年   154篇
  1989年   144篇
  1988年   149篇
  1987年   166篇
  1986年   159篇
  1985年   149篇
  1984年   139篇
  1983年   128篇
  1982年   86篇
  1981年   91篇
  1980年   68篇
  1979年   131篇
  1978年   93篇
  1977年   80篇
  1976年   56篇
  1975年   81篇
  1974年   86篇
  1973年   82篇
  1972年   56篇
  1971年   57篇
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
991.
Neil H Ritson 《Labor History》2020,61(3-4):286-299
ABSTRACT

This paper makes two major contributions: firstly, following on recent research, it offers a more detailed critical analysis of the historical role and structure of Employers’ Associations (EAs), concentrating on a detailed analysis of the range of member services offered by a local Employers’ Association within the Engineering Employers Federation (the EEF) during the 1970s. This focus is in contrast to the literature which has concentrated on the EAs national or ‘central peak’ level. It secondly addresses the ‘countervailing power’ hypothesis, and in so doing it illustrates the key roles of the disputes procedure. The study, as a typical or representative case, uses a qualitative methodology of documentary research combined with triangulation interviews of former officials: evidence which has so far not been prominent in the literature. This paper is, therefore, a significant addition to our understanding of these institutions.  相似文献   
992.
We describe a method for obtaining specific and reproducible deoxyribonuclease I (DNase I) typing from liquid semen. Isoelectric focusing of the enzymes on polyacrylamide gel (IEF-PAGE, pH 3.5-5) was accomplished using a 0.5-mm thick gel. The separated isozymes were visualized by a new activity staining method, dried agarose film-overlay (DAFO). Pretreatment of semen samples with neuraminidase markedly enhanced the isozyme-band resolution and sensitivity. The method was simple and reliable, with high resolution and sensitivity. The DNase I types in semen samples were correlated with the types found in corresponding blood and urine samples. DNase I typing could therefore provide an additional discriminant characteristic in the forensic examination of semen.  相似文献   
993.
Structural arrangements in the Congress work against the use of analysis, but newer developments, such as growth in staff professionalism and activity of the congressional support agencies, tend to promote it. Interviews with committee staff show that they are aware of much analysis, use it primarily for political advantage, but that they also take it seriously as warning of problems and as guidance on particular issues. Staff value information more when they know and trust its source and understand its political motivations. The use of analysis to reconceptualize problems is not much in evidence, perhaps because such “enlightenment” takes place elsewhere and filters into the Congress through informal channels.  相似文献   
994.
Jeremy Horder, Provocation and Responsibility Oxford: Clarendon Press, 1992, pp xvi and 208 pp, hb £25.00.  相似文献   
995.
Altogether, 318 preliminary proceedings were initiated against physicians, compared to 2 against nonmedical practitioners. The majority i.e., 192 proceedings, dealt with charges of torture and deprivation of freedom committed against patients under psychiatric treatment. Ninety-nine proceedings were based on negligent bodily injury and negligent homicide and 15 on failure to give medical assistance. Other reasons were given in isolated cases only. The proceedings were mostly initiated against surgeons, psychiatrists, general practitioners, internists, gynecologists, and 2 against nonmedical practitioners (42 because of negligent bodily injury and 48 because of negligent homicide). The charges were dropped in accordance with Section 170,2 StPO in 78 cses, Section 153, 153a and 154 StPO in 7 cases, and there were 7 acquittals and 2 sentences after trial. In the remaining preliminary proceedings, the charges were dropped in 215 cases according to Section 170,2 StPO, and in 2 cases according to Section 153a StPO. Three defendants were sentenced to punishment and 1 received a verdict of not guilty. Thus in most of the preliminary proceedings the charges were dropped.  相似文献   
996.
The applicability of isoelectric focusing in immobilized pH gradients for the Gc-subtyping in the forensic examination of bloodstains was tested. It is shown that due to the excellent separation of the Gc 1S and 1F bands subtyping of bloodstains can be done with high reliability.  相似文献   
997.
998.
Sudden death in a neonate as a result of herpes simplex infection   总被引:1,自引:0,他引:1  
This paper describes a case of a neonate with disseminated herpes simplex born to a 14-year-old asymptomatic mother. The infant's physical examination was normal at birth, and subsequent abnormalities were so subtle that infection was not recognized during life. Postmortem cultures of liver and spleen grew herpes simplex virus, and immunofluorescent direct antibody typing revealed Type 2. A cervical culture of the mother obtained after the infant's death was negative.  相似文献   
999.
Human erythrocyte peptidase A (Pep A) displays a genetic polymorphism in blacks. Its occurrence in human semen was examined for its possible use as a semen typing system. Studies by starch gel electrophoresis, in which the Pep A was located by an improved method, were carried out on semen, semen stains, and vaginal swabs taken at known times after intercourse. In addition, a large number of vaginal swabs, negative for semen, were taken from females throughout their menstrual cycles and examined for Pep A activity. The results indicated that Pep A typing could be carried out on semen and semen stains. However, it was possible to determine the Pep A type on vaginal swabs only when they had been taken within about 3 h after intercourse.  相似文献   
1000.
Steiner  Jurg; Dorff  Robert H. 《Publius》1985,15(2):49-55
It is relatively easy to characterize the institutional structureof a country as consociational or federal. The task is muchmore difficult if we turn from structure to the decision process.Within a given structure, there may be a great deal of variationwith regard to the decision process. Data for such variationare given for the decision process in Switzerland for whichthe following four types are distinguished: (1) consociationaland federal, (2) consociational and unitary, (3) competitiveand federal, and (4) competitive and unitary. Difficulties arediscussed in aggregating from such a variation to a measurefor the prevailing decision process in a country as a whole.It is suggested that the problem be disaggregated and that decisionprocesses be compared for particular issues. This can be doneboth across and within countries.  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