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   10305篇
  免费   375篇
各国政治   571篇
工人农民   346篇
世界政治   886篇
外交国际关系   504篇
法律   5461篇
中国共产党   2篇
中国政治   78篇
政治理论   2721篇
综合类   111篇
  2020年   120篇
  2019年   172篇
  2018年   252篇
  2017年   256篇
  2016年   253篇
  2015年   179篇
  2014年   204篇
  2013年   1335篇
  2012年   221篇
  2011年   266篇
  2010年   247篇
  2009年   264篇
  2008年   268篇
  2007年   264篇
  2006年   289篇
  2005年   271篇
  2004年   252篇
  2003年   257篇
  2002年   263篇
  2001年   292篇
  2000年   255篇
  1999年   220篇
  1998年   153篇
  1997年   155篇
  1996年   105篇
  1995年   125篇
  1994年   132篇
  1993年   132篇
  1992年   154篇
  1991年   199篇
  1990年   172篇
  1989年   193篇
  1988年   159篇
  1987年   186篇
  1986年   180篇
  1985年   185篇
  1984年   165篇
  1983年   183篇
  1982年   137篇
  1981年   144篇
  1980年   121篇
  1979年   133篇
  1978年   109篇
  1977年   77篇
  1976年   95篇
  1975年   81篇
  1974年   87篇
  1973年   86篇
  1972年   66篇
  1969年   70篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
This paper describes an effort by industry and university partners to centralize manufacturing decision making through the development of generic simulation tools. This ongoing, cooperative process improvement initiative between the Industrial and Systems Engineering faculty at the University of Alabama in Huntsville (UAH) and Chrysler’s Huntsville Electronics Division (HED) permits the involved faculty to broaden their experience and technical expertise in electronics fabrication, while the industry partner benefits from the transfer of technical knowledge and advanced analysis methodologies from the university. The focus of the project is the definition of generic electronic manufacturing models that can be easily defined and implemented through common user-oriented interfaces, allowing users who are not familiar with simulation and simulation languages to address the needs of their particular functional areas.  相似文献   
73.
Andrew M. Greeley is a priest, sociologist, novelist, and journalist. His scholarly writings concentrate on religion and ethnicity. His other writings range from critiques of the Catholic church to best-selling novels.  相似文献   
74.
75.
This paper describes a collaborative exercise intended to demonstrate whether uniformity of DNA profile results could be achieved between different European laboratories. It was shown that this goal can be obtained provided that a common protocol is followed (specifically the use of a common electrophoretic buffer as being the most important parameter). Generally, lower molecular weight loci (with lower molecular weight fragments) such as YNH24 perform better than higher molecular weight loci such as MS43a. The results of the exercise are discussed in relation to the objectives of the European DNA profiling group (EDNAP).  相似文献   
76.
The impact of high temperatures (24 to 39 degrees C) and low to moderately high humidities (20 to 70%) on the applicability of TLC systems for drug identification was studied during a 6 month climatologic cycle in Burkina Faso (West Africa). In general, the Rf values as observed on the plates were found to be substantially affected as compared with values obtained at temperate climates. Some TLC systems were more affected than others and the largest deviations of up to 30 Rf units were at low humidities. Tropical conditions also had a negative effect on the reproducibility of Rf values. However, when an Rf-correction procedure was applied, using reference mixtures of known drugs on each plate, accuracy as well as reproducibility of the resulting Rfc values were drastically improved and data thus corrected were found to be compatible with existing TLC data bases developed under moderate climatological conditions. The impact of high to extremely high humidities (70 to 100%) remains to be investigated.  相似文献   
77.
78.
Legal and practical context. The streamlined procedure is asimplified patent litigation procedure that was introduced overtwo years ago in the English Patents Court and Patents CountyCourt. This article looks at the procedure, the way it has beenapplied since its introduction and the effect it has had onpatent litigation in the UK. Key points. The procedure was designed to deal with simple patentcases quickly and relatively cheaply. It is geared towards aone day trial taking place approximately eight months afterthe commencement of proceedings. Under the procedure there isno automatic disclosure, no experiments and cross-examinationis limited to permitted topics only. Although it was designedwith patents in mind, the procedure is available for all appropriateactions heard in the Patents Court and Patents County Court.It is only suitable, however, for relatively simple actionsin which complex findings of fact are not necessary. Conclusions. Not many actions have come to trial under thisprocedure, but its availability is nonetheless of great significanceto patent litigation in the UK. This is because it providesa new point of departure for directions in certain types ofaction and because its availability has increased access topatent litigation in the UK and has renewed interest in thePatents Court and Patents County Court as forums in which toissue patent proceedings.  相似文献   
79.
The role of the state is changing under the impact of, for example, globalization. The changes have been variously understood as the new public management (NPM), the hollowing–out of the state and the new governance. This special issue of Public Administration explores the changing role of the state in advanced industrial democracies. It focuses on the puzzle of why states respond differently to common trends.
This introductory article has three aims. First, we provide a brief review of the existing literature on public sector reform to show that our approach is distinctive. We argue that the existing literature does not explore the ways in which governmental traditions shape reform. Second, we outline an interpretive approach to the analysis of public sector reform built on the notions of beliefs, traditions, dilemmas and narratives. We provide brief illustrations of these ideas drawn from the individual country articles. Finally, we outline the ground covered by all the chapters but we do not summarize and compare their experiences of reform. That task is reserved for the concluding article.  相似文献   
80.
We consider the problem of drawing inferences within a legal framework when a person is a suspect for two separate offences. Although we are primarily concerned with scientific evidence the issue inevitably arises as to how that evidence interacts with other, non-scientific evidence. We show that, in this particular context, the evidence can be conveniently classified into three categories that concern, respectively: the first crime only; the second crime only; and evidence that relates to similarities between the two crimes. Two case examples are considered and we consider DNA, fibres and eyewitness evidence. These are viewed from the perspective of a prosecutor who has to decide whether or not to charge a suspect with one or both crimes. Graphical sensivity analyses are presented which have features that are not intuitively obvious.  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