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   1410篇
  免费   42篇
  国内免费   71篇
系统科学   106篇
丛书文集   39篇
教育与普及   9篇
理论与方法论   12篇
现状及发展   30篇
综合类   1327篇
  2024年   6篇
  2023年   7篇
  2022年   23篇
  2021年   15篇
  2020年   19篇
  2019年   18篇
  2018年   11篇
  2017年   21篇
  2016年   21篇
  2015年   24篇
  2014年   45篇
  2013年   41篇
  2012年   73篇
  2011年   84篇
  2010年   56篇
  2009年   81篇
  2008年   78篇
  2007年   84篇
  2006年   95篇
  2005年   83篇
  2004年   71篇
  2003年   92篇
  2002年   79篇
  2001年   46篇
  2000年   46篇
  1999年   53篇
  1998年   38篇
  1997年   21篇
  1996年   25篇
  1995年   23篇
  1994年   22篇
  1993年   11篇
  1992年   17篇
  1991年   17篇
  1990年   14篇
  1989年   18篇
  1988年   17篇
  1987年   16篇
  1986年   7篇
  1985年   1篇
  1984年   3篇
  1980年   1篇
排序方式: 共有1523条查询结果,搜索用时 15 毫秒
121.
阐述了图书馆权利政策的内涵与意义,分析了图书馆权利和道德的内在关联以及高校图书馆权利和道德的主要特点及其特殊性,提出了高校图书馆权利政策的发展方向。  相似文献   
122.
基于Agent的作战单元行为规划方法研究   总被引:6,自引:0,他引:6  
在海军多兵种协同攻击蓝方海上舰艇编队的作战想定背景下,为拟制红方参战兵力联合作战协同行动规划计划,采用智能体理论和多智能体技术,将担负作战任务的作战突击兵力定义为作战单元智能体,建立了作战单元智能体的BDI原型结构模型。基于分布计划的分布规划方法,定义了作战单元智能体的协同作战行为规划范围,建立了其协同行为规划问题求解操作方法类模型和行为规划模型,描述了作战单元智能体拟制协同作战行动计划方案的整个规划过程。通过规划形成决策功能,完成了协同行为规划初步计划方案,通过行动计划管理功能完成领域行为规划库的管理。  相似文献   
123.
This paper uses Stafford Beer's Viable Systems Diagnosis (VSD) to suggest that the development of a model for actionable theory in organizations would take the form of a three-step process. The first step involves the definition and explanation of an appropriate theory base, the second theory interpretation into a coherent set of action principles and the third contextual action in organizations. We contend that even for a well-informed and widely read manager gleaning the theoretical basis for this process from the recognized Beer trilogy “Brain of the Firm,” “The Heart of the Enterprise” and “Diagnosing the System” is difficult to justify in terms of time, understanding, and action. We maintain that a sound set of action principles emanating from Beer's primary work must be considered before tackling the noted trilogy. We use Beer's initial text “Cybernetics and Management” to trace some fundamental operational research and the interdisciplinary tripartite science of cybernetics. We commence our action model process with some introductory thoughts into operational research, cybernetics, VSD, and contextual action. Our first step toward action involves some primary definitions and principles of cybernetic theory and the prospect of controlling overwhelming variety. Our second step provides our set of coherent potential action principles fundamental to cybernetic theory. The paper is written in a journalistic rather than academic style reflecting the need to couch the interpretation of the theory in a language that the well-informed manager may readily translate into third step contextual practice.  相似文献   
124.
This paper begins with an introduction to the philosophy and methodology of Critical Systems Heuristics (CSH). Following this, various citicisms of CSH are reviewed. One particularly important criticism is that CSH should not be seen as a replacement for other systems approaches, but as complementary to them. It is this idea of complementarity that has led several Critical Systems thinkers to take CSH, along with a number of other systems methods, and try to show that they are most appropriately used in different contexts. CSH, it is said, is at its most useful when we are confronted with coercive situations. However, in this paper it is argued that coercion is usually characterised by closure of debate. Therefore CSH, which depends upon the possibility of communication (or arbitration) between stakeholder groups, becomes redundant when coercion is experienced. It is further argued that coercion can only be addressed adequately by widening our definition of systems practice to include campaigning and direct political action. There is still considerable scope for developing these areas in the systems domain.  相似文献   
125.
Total Systems Intervention (TSI) is an approach to intervening in problem situations which has much to offer where complex interacting issues need to be addressed by the complementary use of intervention methodologies. That such an approach has much in common with Action Research (AR) has been recognized, with much recent effort being devoted to the relationship between AR and Critical Systems Thinking (CST), the theoretical endeavor underpinning TSI. This paper further develops this line of debate and relates AR or Human Inquiry (HI) more directly to TSI, using an information systems intervention to enhance the study. The outcome is a demonstration of how TSI implicitly uses techniques informed from the field of Action Research, and how a more thorough synthesis of HI with TSI might serve to improve the overall intervention process.  相似文献   
126.
This paper is written for a broad general readership. It presents a prismatic reflection on systemic thinking, Buddhist philosophy, and deep ecology, with the objective of shedding light on world problems and understanding their gravity. Such an inquiry constitutes a formidable spearhead for the betterment of the world, guiding us towards holism, and moving us away from the partial, fragmented, compartmentalized thinking that is prevalent today. Although no deliberate attempt is made to articulate solutions to specific problems, a brief account of current socially engaged action is described.  相似文献   
127.
The article describes and demonstrates the use of a new research proposal for understanding the complexity in organizations in terms of a Deleuzian sense of an event. It creates the rhizome metaphor that allows the emergence of different ways of systems thinking, a legitimate challenge to the Modernist’s orthodoxy. For Deleuze and Guattari, micropolitics are the essence of what we call ‘rhizomatic systems.’ It is this concept of the organization, as a rhizome or rhizomatic systems that we want to focus from ‘problem solving’ in a real-world situation to the process of problematization, that is, the making or appreciating a series of events in the problematizing fields. The paper draws on the research experience in which participatory action research was carried out in a Korean distribution company. The participatory learning process happened to create a series of events in which ‘time-related research’ was conducted in order to facilitate the process of problematization within the organization.
Jae Eon YuEmail:
  相似文献   
128.
针对操作人员难以在有限的光学运动捕捉设备捕捉范围内自由运动的问题,开展了协同虚拟维修过程中的虚拟人体维修操作控制研究。基于光学运动捕捉设备对操作人员的下肢动作进行捕捉,根据实时识别结果控制虚拟人体进行大范围运动。针对维修操作过程中的虚拟人体手部运动控制,分析了虚拟人体的手部交互过程,提出了一种基于动态贝叶斯网络的维修操作智能辅助方法。以某液压缸协同式虚拟维修操作仿真平台为例验证了方法的有效性。该方法实现了对虚拟人体维修操作过程的有效控制,具有实时性好、交互性与感知性强等优点。  相似文献   
129.
决策树学习在RoboCup仿真球队中的应用研究   总被引:7,自引:0,他引:7  
通过对基于决策树的学习方法的探讨,该文提出了一种用于RoboCup仿真球队中Agent“行为选择能力”的训练算法,使得Agent能够根据当前场上的状态,决定下一步的行动。并以射门为实例,用该方法对Agent进行训练,使Agent学会判断当前状态是否可以射门,在不可射门的情况下选择下一步的行动。  相似文献   
130.
VRML场景中的智能替身研究   总被引:1,自引:0,他引:1  
徐延宁  李俊二  李学庆 《系统仿真学报》2004,16(11):2381-2383,2387
给出VRML场号中的智能替身模型,使得替身可以更好的理解用户的意图。首先,利用参数化的方法构造替身模型,使得用户可以更快捷的定制个性化的替身;在此基础上,分层次的动作模型实现了从高层的面向任务的动作到底层替身物理动作的高效分解与映射;最后,多通道的交互方式使得用户可以通过更自然的方式控制自己的替身。VRML场景中的智能替身研究为VRML多用户虚拟场景中替身交互,以及替身与场景交互的研究提供了基础。  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