Dealing with coercion: Critical Systems Heuristics and beyond

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.     

3型FIR滤波器优化设计研究

详细研究了3型FIR线性相位滤波器的幅频响应与正弦基函数神经网络算法之间的关系,提出并证明了该模型算法的收敛性定理,给出了3型FIR带通滤波器、海尔伯特变换器和微分器的优化设计实例。研究结果表明提出的算法避免了求高价逆矩阵的困难,有效解决了3型FIR高价数字滤波器优化设计的瓶颈问题。计算机仿真结果表明了正弦基函数神经网络算法在3型FIR高价数字滤波器优化设计领域中的有效性。     

空间预警系统任务分析/规划仿真环境

针对空间预警系统的任务分析和规划问题，使用基于ASPEN的表示建模语言建立起航夭系统的任务模型，将Pareto遗传算法、混合遗传算法等多种搜索算法，和卫星仿真软件STK集成在一起，建立了一个任务分析规/划仿真环境，并在其中进行了一些仿真分析研究，如预警卫星星座优化、预警卫星传感器调度等。     

带有两货栈具有抛物型需求的变质性物品经济批量问题

传统的确定性经济批量模型通常都假定需求率是常数,且每周期的相关费用是固定不变的。弱化这些假定,并在每周期的需求依赖于抛物型需求的假设下,提出了带有两货栈的变质性物品在有限计划期内的经济批量模型。研究了该模型具有惟一的整体最优解,并给出应用实例。     

数字多路选择器单级及二级逻辑网络的最优化设计Ⅰ

基于一个逻辑函数的数字多路选择器实现，实际上是将该函数的真顶点按该网络的控制变量的取值进行分类的观点，利用布尔代数运算，讨论了数字多路选择器模块M（p）的可实现性，给出了数字多路选择器单级逻辑网络的最优化设计方法．给出的设计实例说明了这种方法是有效而可行的．     

Informization Implementation for Chinese Retailers

Retailing is an important component of every country's economic system. The current status and developments in the informization of Chinese retail industry were investigated by using questionnaires and interviews to survey 139 retailers throughout China. The investigation shows that Chinese retailers are in the initial informization stage, and can be classified into different types with corresponding informization characteristics. In addition, the survey identified the key problems faced by retailers in the initial stage. Developments in the information technology field were analyzed to identify the key technologies that Chinese retailers should focus on during the informization process. The investigation also shows that the retailers have not arrived at a consensus about information technology adoption, and thus hesitate to use new information technologies, such as the radio frequency identification.     

露天矿边坡角的优化设计

提出了基于离散元法和神经网络的集成优化设计方法，离散元能充分考虑边坡岩体结构的不连续性，处理边坡的大变形情况，神经网络是从中获取经验知识，并用之解决问题的智能系统，该方法从两条途径，不同的角度，不同的侧面来设计边坡角，并进行优化，增强了设计的可行性。     

基于视觉反馈的自主式移动机器人路径规划方法

对自主式移动机器人，通过立体视觉方法得到环境的深度信息，并反馈控制机器人的运动。文中提出了一种基于自由门１－ｄｏｏｒ和ｔ－ｄｏｏｒ进行机器人路径规划的方法，讨论了该方法的可行性，并分析了通常情况下机器人运动可能遇到的几种情况。     

黑河分层型水库水量水质综合优化调度的研究

本文分析了黑河水库水温、水质与黑河水库取水建筑物的关系。建立了黑河水库水库水量水质综合优化调度的动态确定性多目标非线性数学模型。并按逐次逼近的逐步优化法（ＰＡＰＯＡ法）对数学模型进行求解计算。经分析计算证明，该数学模型概念清晰，结构合理，计算精度较高，且优化迭代计算速度快，占计算机内存量小，避免了动态多目标优化中的“维数灾”。可供规划、设计及管理等阶段在分层型综合利用的水库水量水质综合优化调度中使用。