A Method on the Item Investment Risk Interval Decision-making of Processing Ranking Style

1　IntroductionPolicy decision is the most common synthetic activity in people′s usual life.To realize thegiven aim,itis a process,which used scientifictheoriesand methods,analyzed the subjec-tive and objective conditions,put forward differentschemes and selected the optimal one.The item investment decision inevitably faces the uncertainty problem ,especially undermarket- oriented economy condition,itis more obvious. To avoid the fault of the item in-vestment decision,under the condition of s…     

Planning to Plan-Integrating Control Flow

In many planning situations, computation itself becomes a resource to be planned and scheduled.We model such computational resources as conventional resources which are used by control-flow actions,e.g., to direct the planning process. Control-flow actions and conventional actions are planned/scheduled in an integrated way and can interact with each other. Control-flow actions are then executed by the planning engine itself. The approach is illustrated by examples, e. g., for hierarchical planning, in which tasks that are temporally still far away impose only rough constraints on the current schedule, and control-flow tasks ensure that these tasks are refined as they approach the current time. Using the same mechanism, anytime algorithms can change appropriate search methods or parameters over time, and problems like scheduling critical time-outs for garbage collection can be made part of the planning itself.     

车间作业调度(JSSP)技术问题简明综述

介绍了车间作业调度技术问题的理论、算法分类、特点及一般框架 .将 JSSP问题的研究方法分为两类 :最优化方法和近似 /启发式方法 ,对各种算法逐一分析比较 .总结了近年来该研究领域取得的进展和存在的问题 ,并指明了将来的发展方向.     

软计算求解并行多机成组工件调度问题

自从Zade将模糊理论引入求解组合优化问题以来，出现了很多基于模糊规则与智能优化算法相结合的软计算方法，文章尝试将这种方法用于解决并行多机成组工件flow-time问题，本问题中，设有n个工件计划在M台并行一致的机器上加工，这n个工作根据相似性分为b组，开始加工时，需要一个准备时间，当工件接续在同组工件之后加工时，不需要准备时间，反之，接续在不同组工件之后加工时，需要一个准备时间，本问题的目标是找到一个工件加工的调度顺序序列，使M台机器总的流水时间最小，在文章中，作者首次利用模糊规则量化结合遗传算法的软计算方法求解这类复杂的组合优化问题，最后给出计算实例及仿真结果。     

可支持多级关键度任务的实时操作系统

为设计可支持多级关键度任务的军用实时操作系统MRTOS,首先分析了现有实时操作系统的调度机制。同时为定量描述任务的关键度,使用时间窗口来描述任务在有限时间范围内的时限错过情况。基于此描述,提出了改进型的最短紧急距离优先调度算法,该算法可保证实时任务仅错过规定数量的时限,能有效支持不同关键度任务同时运行在同一计算机上,同时可在任务量瞬时过载的情况下保证关键任务优先得到执行。最后通过仿真对最短紧急距离优先调度算法进行了例证。     

The Planning and Scheduling of Business Process in Agile Supply Chain System

The rapidly developing global competition is leadin g to the worldwide enterprise alliance, with which the geographical dispersion of production, assembly and distribution operations comes into being. Supply chain system is such a kind of enterprise alliance, managing the material and informat ion flows both in and between enterprises, such as vendors, manufacturing and assembly plants and distribution centers. In the present research work, we can see that supply chain system can quickly respond to c...     

《度算释例》中物理知识的研究

对梅文鼎《度算释例》中物理学知识进行了探讨，分析了书中利用比例规和比重表两种方法求解物体比重问题，并且对书中两种求解任意四边形重心的方法，做了详细的介绍与分析．     

HD4478U控制器的LCD应用及错误显示问题解决

以用HD4 780U作为控制器的TC1 6 0 2A型LCD为例介绍LCD在AT89C5 2单片机系统中的应用 ,探讨了工程中经常出现的显数据不准确问题的原因和解决方法     

机械润滑在液压伺服比例系统中的应用

摩擦可以使伺服比例系统的稳态和动态特性具有死区和滞环,机械润滑可降低伺服阀阀芯与阀芯腔之间的最大静摩擦力,从而提高伺服比例系统的响应性能及控制精度.通过对机械润滑机理进行分析,对产生机械润滑的颤动电路的设计及其调节进行了介绍,在此基础上还对其在伺服比例系统的应用效果进行了理论分析和试验验证.     

基于语义SOA的业务流程可变的自适应软件研究

为了增强软件的自适应能力,考虑业务流程的可变性,提出了基于语义SOA的业务流程可变的自适应的软件框架,并分析了其蕴含的软件自适应机制。基于该框架,从业务流程资源配置角度,将业务流程及其资源按其不同流程粒度封装为单粒度或复合粒度的服务,并构建业务流程领域本体,对服务语义化,并给出了相应的服务调度方法。进一步同其他相关方法进行了比较,结果表明该方法在业务流程可变上更优。