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   162篇
  免费   3篇
  2022年   1篇
  2021年   1篇
  2019年   5篇
  2018年   11篇
  2017年   4篇
  2016年   5篇
  2015年   3篇
  2014年   5篇
  2013年   57篇
  2011年   1篇
  2010年   1篇
  2009年   1篇
  2008年   2篇
  2007年   3篇
  2006年   3篇
  2005年   6篇
  2004年   3篇
  2003年   3篇
  2002年   2篇
  2001年   1篇
  1998年   2篇
  1997年   1篇
  1996年   3篇
  1995年   3篇
  1994年   3篇
  1993年   3篇
  1992年   2篇
  1991年   1篇
  1990年   1篇
  1989年   3篇
  1988年   2篇
  1987年   1篇
  1986年   2篇
  1985年   2篇
  1984年   5篇
  1982年   1篇
  1980年   1篇
  1977年   1篇
  1976年   1篇
  1974年   2篇
  1973年   3篇
  1972年   1篇
  1970年   1篇
  1969年   1篇
  1966年   1篇
排序方式: 共有165条查询结果,搜索用时 218 毫秒
21.
22.
23.
This paper analyses the micro-level processes by which ordinary rural Nepalis came to support the Maoist insurgency. Working through the implications of orthodox collective action theory, it finds that Maoist cadres are unlikely to have been strongly motivated by considerations of acquisitive self-interest. However, the participation of many may have been partly secured through various forms of coercion. Non-instrumental motivations for participation that are not accounted for by the rational choice premises that underpin conventional collective action theory are also identified. These are found to have been of particular significance in the violent and uncertain context of contemporary Nepal.  相似文献   
24.
While separatist-related conflict has re-emerged in southern Thailand, there is one predominantly Muslim border province that has remained outside of the conflict. Satun province has been conspicuously unaffected by the Malay-Muslim separatist movement, despite its shared history and ethnic origins with the conflict-affected provinces. In contrast to Pattani, Yala, and Narathiwat, the process of state penetration in Satun was gradual and comparatively less coercive, leading to relative stability and encouraging political and economic integration. This comparative study analyzes the history of cooperative state–minority relations and political stability in Satun province, and draws important lessons directly applicable to the unrest in neighbouring provinces.  相似文献   
25.
26.
27.
28.
In an endeavor to broaden the application of scheduling models to decisions involving the use of a manager's time we use simulation to investigate the performance of a number of simple algorithms (including eight priority rules and a construction heuristic) in a dynamic setting with tasks arriving (randomly) and scheduling decisions being made, over time. We compare these simple methods relative to a bound that uses an adjacent pairwise interchange algorithm. We model uncertainty in task durations, and costs being incurred for early and tardy task completion (representative of JIT settings). In addition to evaluating the efficacy of the scheduling rules and various preemption strategies (using ANOVA), we highlight the managerial implications of the effects of eight environmental parameters. © 1996 John Wiley & Sons, Inc.  相似文献   
29.
A search is conducted for a target moving in discrete time among a finite number of cells according to a known Markov process. The searcher must choose one cell in which to search in each time period. The set of cells available for search depends upon the cell chosen in the last time period. The problem is to find a search path, i.e., a sequence of search cells, that either maximizes the probability of detection or minimizes the mean number of time periods required for detection. The search problem is modelled as a partially observable Markov decision process and several approximate solutions procedures are proposed. © 1995 John Wiley & Sons, Inc.  相似文献   
30.
Defense contractors retain engineers for two reasons. First, engineers work on current-period production contracts. Second, engineers conduct independent research and development (IR&D) and write bids and proposals (B&P) for future contracts. The amount of IR&D/B&P activity, however, understates the amount of effort devoted to learning that reduces the cost of future production. Even some engineers who work on current-period production may engage in learning, as a by-product of their efforts. This article develops and implements a model for estimating the volume of learning activity undertaken by four large manufacturers of military aircraft. © 1994 John Wiley & Sons, Inc.  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