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   389篇
  免费   6篇
  395篇
  2021年   7篇
  2019年   7篇
  2018年   5篇
  2017年   3篇
  2016年   7篇
  2014年   5篇
  2013年   63篇
  2012年   3篇
  2009年   4篇
  2008年   2篇
  2007年   13篇
  2005年   2篇
  2004年   3篇
  2003年   7篇
  2002年   6篇
  2001年   3篇
  2000年   3篇
  1999年   4篇
  1998年   7篇
  1997年   8篇
  1996年   9篇
  1995年   3篇
  1994年   6篇
  1993年   10篇
  1992年   8篇
  1991年   9篇
  1990年   13篇
  1989年   17篇
  1988年   14篇
  1987年   7篇
  1986年   14篇
  1985年   8篇
  1984年   4篇
  1983年   3篇
  1982年   10篇
  1981年   6篇
  1980年   7篇
  1979年   9篇
  1978年   8篇
  1977年   5篇
  1976年   5篇
  1975年   5篇
  1974年   8篇
  1973年   5篇
  1972年   3篇
  1971年   7篇
  1970年   6篇
  1969年   5篇
  1967年   6篇
  1948年   4篇
排序方式: 共有395条查询结果,搜索用时 15 毫秒
221.
Does the United Nations naming and shaming of specific violations of human rights decrease government repression? In this article, we argue that international shaming of specific human rights violations can weaken the target government, bringing new challenges and making the government cessation of repression less feasible. When international naming and shaming campaigns target specific repressive tactics, they increase the costs of some – but not all – means of repression. Using original data on naming and shaming by the United Nations Human Rights Council (HRC), we show that the shaming of one physical integrity violation is jointly associated with decreases in that violation and increases in other violations of human rights.  相似文献   
222.
本文讨论了军械装备故障诊断专家系统(JXESDT)的设计思想和实现技术,阐述了它的多种知识表示方法和推理机设计,并引入第二代专家系统特有的深层推理概念,从而在JXESDT中建立了一种深浅层推理结合的机制。  相似文献   
223.
A linear programming model for analyzing the strategic deployment mix of airlift and sealift forces and prepositioning to accomplish the composite requirements of a set of possible contingencies is described in this paper. It solves for the least-cost mix of deployment means capable of meeting any one of a spectrum of contingencies, or meeting simultaneous contingencies. The model was developed by RAC as part of the U.S. Army's study program and has been used in analyses of deployment systems conducted in support of the U.S. Army, the Joint Chiefs of Staff and the Office of the Secretary of Defense. Results of analyses have influenced the preparation of long-range plans as well as the formulation of the FY67 Department of Defense budget. The paper gives the background and assumptions of the model, describes the model by means of a simple hypothetical example followed by a selected subset of a complete version, and discusses how the model is used.  相似文献   
224.
Given herein is an easily implemented method for obtaining, from complete or censored data, approximate tolerance intervals associated with the upper tail of a Weibull distribution. These approximate intervals are based on point estimators that make essentially most efficient use of sample data. They agree extremely well with exact intervals (obtained by Monte Carlo simulation procedures) for sample sizes of about 10 or larger when specified survival proportions are sufficiently small. Ranges over which the error in the approximation is within 2 percent are determined. The motivation for investigation of the methodology for obtaining the approximate tolerance intervals was provided by the new formulation of Lanchester Combat Theory by Grubbs and Shuford [3], which suggests a Weibull assumption for time-to-incapacitation of key targets. With the procedures investigated herein, one can use (censored) data from battle simulations to obtain confidence intervals on battle times associated with given low survivor proportions of key targets belonging to either specified side in a future battle. It is also possible to calculate confidence intervals on a survival proportion of key targets corresponding to a given battle duration time.  相似文献   
225.
The absence of formal diplomatic relations between India and Israel from India's hesitant recognition of Israel in 1950 and the establishment of full relations in January 1992, was the result of a complex interplay between two sets of tensions. The first involved the Arab–Israeli dispute, and India's sympathies with a post-colonial Arab world and with the Non-Aligned Movement; the second involved accommodating Muslim opinion within India. Normalization has proceeded more strongly as the growth of Hindu nationalism has weakened Muslim leverage on Indian foreign policy.  相似文献   
226.
Torture requires careful definition, because of the degree to which its definition often entails its moral condemnation. Torture involves the deliberate infliction of (intense) pain for coercive or punishment reasons. While emphasizing that the act of torture is indeed naturally seen as repulsive and ideally should not take place, I offer a non-utilitarian argument to ethically justify torture in specific kinds of interrogative cases. This argument closely examines the moral isomorphism between cases of immediate and delayed self-defense, showing that in both cases lethal force is justified. I further show that, once one’s life is forfeit, one’s other rights pertaining to the defense of one’s intended victims are likewise forfeit. As such, any form of interrogative torture necessary to procuring relevant information from persons involved in a lethal attack upon innocent persons is ethically justified. However, that an action is strictly ethically justified does not entail that it ought to be generally adopted. Several potent constitutional and sociological concerns are raised and considered.  相似文献   
227.
228.
During the first half of the 19th century substantial quantities of Oriental and Asiatic arms and armour first began to appear in Britain. On the one hand they certainly reflected the expansion of empire but their wider significance has yet to be discussed. This article seeks to address that omission by exploring the growth of interest in these objects within military circles, what they represented to the individuals who acquired them, and how they fitted into the wider collecting strategies of military officers as a group.  相似文献   
229.
230.
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