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   525篇
  免费   16篇
各国政治   24篇
工人农民   18篇
世界政治   46篇
外交国际关系   12篇
法律   230篇
中国政治   7篇
政治理论   199篇
综合类   5篇
  2022年   3篇
  2020年   4篇
  2019年   6篇
  2018年   10篇
  2017年   14篇
  2016年   8篇
  2015年   5篇
  2014年   7篇
  2013年   82篇
  2012年   10篇
  2011年   12篇
  2010年   15篇
  2009年   14篇
  2008年   8篇
  2007年   13篇
  2006年   12篇
  2005年   18篇
  2004年   21篇
  2003年   10篇
  2002年   19篇
  2001年   5篇
  2000年   14篇
  1999年   10篇
  1998年   14篇
  1997年   6篇
  1995年   12篇
  1994年   6篇
  1993年   7篇
  1992年   9篇
  1991年   10篇
  1990年   8篇
  1989年   7篇
  1988年   11篇
  1987年   15篇
  1986年   12篇
  1985年   10篇
  1984年   10篇
  1983年   9篇
  1982年   5篇
  1981年   14篇
  1980年   6篇
  1979年   5篇
  1978年   7篇
  1977年   7篇
  1976年   8篇
  1975年   3篇
  1974年   2篇
  1973年   2篇
  1972年   3篇
  1965年   2篇
排序方式: 共有541条查询结果,搜索用时 31 毫秒
71.
72.
<正> 法国政府一般对外国投资是抱支持态度的。法国的政府机构——地方领土整治评议会(DATAR)积极寻找机会吸引外国投资,尤其是吸引外国投资者到法国较不发达地区去投资,并对外国投资规定了刺激和鼓励的措施。这些措施包括:支付现金、对人员培训提供津贴、特别税收减免  相似文献   
73.
Journal of Experimental Criminology - The primary aim of this study is to provide an evaluation of St. Louis’ Acoustic Gunshot Detection System’s (AGDS) ability to reduce gun violence....  相似文献   
74.
In many, especially English, defamation cases,the court often speaks of ``the average reader',``the reasonable reader' or similar concepts,which does not refer to any flesh-and-bloodreader of the defamatory text, but is a type ofconstruct of what the court thinks would be thenormal reaction of a person to an allegedlydefamatory text. This concept is compared to asimilar phenomenon found in literary theory inthe persona of the implied reader, created bythe (implied) author as having a given set ofvalues which will lead to an appreciativeinterpretation of the literary work. The papercompares the parallel concepts in the twofields.  相似文献   
75.
Physicians use the American Medical Association's Guides to the Evaluation of Permanent Impairment, 5th edition to evaluate millions of disability applicants each year. As major contributors to the chapter in the Guides devoted to assessing impairment associated with pain, we confronted the difficulties of incorporating pain into the Guides' overall evaluation system. Analysis of these difficulties is complicated by the paucity of research on the Guides, and by ambiguities and contradictions that pervade it. We propose that the ambiguities can be reduced if impairment is consistently defined in terms of organ or body part derangement, and disability in terms of activity limitations at the level of the whole person. We also propose a distinction between objective factors that may influence a person's ability to perform activities following injury. We suggest that when physicians examine disability applicants, they should evaluate both objective measures of organ or body part dysfunction and subjective reports of applicants -- especially ones regarding pain. We conclude that a comprehensive medical evaluation of disability applicant encompasses more than an impairment assessment.  相似文献   
76.
The quantitative analysis of manufacturing operations usually considers the amortization of physical assets, and allows for the cost of such assets in product prices. Typically, this involves the use of an asset's P/A ratio, where P is its initial cost and A is the net cash-flow or profit it generates in unit time. The simplest case, regarding asset life as fixed, is seldom credible, and a more realistic approach is to model the stochastic nature of asset lifetimes. In this paper, we demonstrate the efficacy of the strategy of calculating an average P/A, and show that the earning power of assets should increase with variability in lifetimes. We then argue that pricings based around this average are most useful with large numbers of assets, and that analysis of a small number requires a more considered approach. Finally, we consider the impact of estimating lifetime parameters on the approaches outlined.  相似文献   
77.
78.
79.
80.
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