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   669篇
  免费   92篇
  国内免费   77篇
电工技术   36篇
综合类   66篇
化学工业   3篇
金属工艺   4篇
机械仪表   56篇
建筑科学   27篇
矿业工程   5篇
能源动力   10篇
轻工业   2篇
水利工程   13篇
石油天然气   5篇
武器工业   1篇
无线电   48篇
一般工业技术   33篇
冶金工业   64篇
自动化技术   465篇
  2024年   4篇
  2023年   7篇
  2022年   7篇
  2021年   10篇
  2020年   9篇
  2019年   9篇
  2018年   10篇
  2017年   8篇
  2016年   12篇
  2015年   16篇
  2014年   33篇
  2013年   34篇
  2012年   51篇
  2011年   56篇
  2010年   48篇
  2009年   75篇
  2008年   71篇
  2007年   76篇
  2006年   53篇
  2005年   65篇
  2004年   41篇
  2003年   38篇
  2002年   28篇
  2001年   24篇
  2000年   13篇
  1999年   11篇
  1998年   8篇
  1996年   5篇
  1995年   6篇
  1994年   1篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1989年   2篇
  1959年   1篇
排序方式: 共有838条查询结果,搜索用时 0 毫秒
1.
The popularity of grid services has widened their application to numerous domains and increased the utilization of computational resources. In order to create more incentives for the resources owners to lease their resources and prevent users from wasting the resources, the introduction of a market-oriented grid is inevitable. However, the issues for the negotiation between service provider and consumer over the supply and demand of resources can be complex, with highly interdependent issues. In this research, a simulated automated negotiation mechanism including a co-evolutionary mechanism and a modified game theory approach is proposed, to assist them in reaching an agreement over the conflicting issues. In the proposed architecture, the co-evolution process is able to reduce the multiple dimensional search space into a two-dimension search space and identify the appropriate negotiation strategies for the negotiating agents to form a payoff matrix which can be used for the game theory related stage of their interaction. The multiple stage negotiation process is introduced to improve the negotiation result. In this paper, an application which requires a large amount of computational resources to process the data generated from mobile devises is used to demonstrate that the proposed system is able to resolve the conflicts and obtain a valid solution.  相似文献   
2.
Negotiation support systems: roots, progress and needs   总被引:2,自引:0,他引:2  
Abstract. This paper identifies game theories and social behavior science as important roots for negotiation support systems (NSS) research. As these are not typically cited in the NSS literature, summary reviews of them are provided with indications of their relevance to NSS study. On the other hand, neither offers a sufficiently general-purpose formal model of negotiation that could serve as a backbone for NSS research. A survey of that research is provided, indicating that prugress to date has been somewhat eclectic and devoid of such a model. Our central contention is that a theoretical foundation for NSS study is much needed. Desirable characteristics of a suitable negotiation model are identified as guidance for future research that will aim to devise (and subsequently apply and test) such a model.  相似文献   
3.
高摩赞工程项目是水电集团公司在巴基斯坦承建的第一个综合性的水利水电枢纽工程,也是第一个EPC合同形式的项目。本文主要介绍了项目危机处理及合同谈判的过程和措施,通过长达一年的艰苦谈判,化解了项目危机,增进了中巴传统友谊,实现了良好的经济效益和社会效益,为中国水电集团公司国际化战略发展提供了可借鉴的成功案例。  相似文献   
4.
自动信任协商是通过逐渐请求和披露数字证书在两个陌生实体间建立相互信任的方法。当前对自动信任协商协商策略的研究,往往存在很多问题。文章提出了一种基于期望因子的自动信任协商模型,该模型采用MCD策略,通过分析各信任证书的期望因子,当可能的协商存在时,它能披露和请求最小的信任证找到一条成功的协商路径,当协商不可能成功时,尽快的发现并终止它。它能保证在协商的过程中没有不相关的信任证被披露并且不需要暴露双方的访问控制策略,同时通过实验证了明MCD策略是完备的。  相似文献   
5.
Abstract

With growing pressures for collaborative information systems (IS) partnerships, Enterprise Resource Planning (ERP) implementation has been an important activity for improving supply chains efficiency in Small and Medium-Sized Enterprises (SMEs). Historically ERP consultants usually take a product-selling approach in SMEs, providing limited management consultancy services. However, a more constructive role for management consultants has become an emerging and challenging issue. This study explored the involvement of management consultants in ERP implementation, particularly with internal managers, ERP consultants and other project members. Extensive interviews were conducted with management consultants as well as 47 project members from four different SMEs in Taiwan employing ERP consultants. Using a grounded theory methodology, prior literature was used to sensitize the findings to key concepts of importance. The results were then analyzed and we described how owner-managers regard management consultants and how the consultants use role negotiation skills to work with both internal managers and ERP consultants. The study found resistance toward management consultants primarily from managers in SMEs, and not owner-managers. The relationships between management consultants and SME managers also differed from similar relationships in large organizations. Suggestions are also provided for academics and practitioners along with areas for future research to extend these exploratory findings.  相似文献   
6.
WSNs (wireless sensor networks) consist of thousands of tiny nodes having the capability of sensing, computation, and wireless communications. Unfortunately these devices are limited energy devices, that is means we must save energy as much as possible, to increase network life time as long as possible. In this paper we introduce NEER--normalized energy efficient routing protocol that increases network life time through switching between AODV protocol that depends on request-reply routing, and MRPC that depends on residual battery in routing.  相似文献   
7.
In this paper, we propose a distributed agent model that applies belief-desire-intention (BDI) reasoning and negotiation for addressing the linear assignment problem (LAP) collaboratively. In resource allocation, LAP is viewed as seeking a concurrent allocation of one different resource for every task to optimize a linear sum objective function. The proposed model provides a basic agent-based foundation needed for efficient resource allocation in a distributed environment. A distributed agent algorithm that has been developed based on the BDI negotiation model is examined both analytically and experimentally. To improve performance in terms of average negotiation speed and solution quality, two initialization heuristics and two different reasoning control strategies are applied, with the latter yielding different variants of the basic algorithm. Extensive simulations suggest that all the heuristic-algorithm combinations can produce a near optimal solution soon enough in some specific sense. The significance and applicability of the research work are also discussed.  相似文献   
8.
Multi-Agent协商是目前研究的一个热点,而从底层开发出一个Multi-Agent协商系统是非常复杂和困难的。该文在研究JADE仿真平台技术的基础上,对基于JADE仿真平台的Multi-Agent协商进行了设计与实现,为研究Multi-Agent协商有着重要的意义。  相似文献   
9.
服务质量QoS管理是满足分布式环境中端到端QoS需求的关键,而中间件是一种分布式系统中的主要交互平台.首先对中间件和QoS的相关概念进行介绍,在分析传统QoS管理模型的基础上,提出一种基于消息中间件(MOM)的QoS管理模型,重点分析多维QoS在该模型中的应用,最后结合一个实例说明多维QoS在实际系统中的应用.  相似文献   
10.
轮腿式机器人倾覆稳定性分析与控制   总被引:2,自引:0,他引:2  
对于运动在不平坦地形中的移动机器人而言,其倾覆稳定性非常关键.设计了一种结构对称的轮腿式机器人,它有4个独立的轮腿运动单元,能够变化多种构形.采用动态能量稳定锥方法和倾覆稳定性指数对机器人的稳定性进行综合评价,建立了一个模糊神经网络自适应控制系统.根据稳定性指数值,该系统可以实时改变机器人的构形和速度,保证其倾覆稳定性.正弦路面上的仿真结果表明,该系统所产生的动作实时性好、可靠性高,能够降低机器人自主越障过程中的危险.  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