Methodological foundations of systems methodologies

In social systems science generally, and in management science particularly, recent developments in the variety of types of specific problem-solving methodologies (under the rubric of hard and soft systems approaches) have given an impetus to a line of inquiry, as well as debate on the nature of those methodologies. On the one hand, there has been the view that what we are witnessing is a form of Kuhnian crisis. On the other hand, a complementarist view of developments has been argued and a contingency approach proposed. But one thing has been common among the competing views: a belief that the prospects for further advances in the design and application of those methodologies, and in resolving the current controversies, lie in serious attempts to reconsider and clarify the underlying metatheoretical assumptions and concerns. This paper is an attempt to contribute to such an endeavor. A brief exposition of three methodological foundations (namely, empiricism, hermeneutics, and critique) is made, not only with the purpose of highlighting the nature as well as the limits of their epistemological and ethical claims, but also as a basis for illuminating both the nature of contemporary work on systems inquiry, design, and problem solving and the ongoing debate on what constitutes appropriate criteria for choice of specific methodologies.     

“变截面管中跨声速气流”一文引理的证明

本文对T·P·Liu教授关于“变截面管中跨声速气流”一文的关键性引理给出一个清楚的证明,以使这篇有影响的开创性论文更加完美。     

粘结平面对称分叉裂纹的奇异积分方程数值解

本文对一个含分叉裂纹的弹性半平面与另一不同材料的半平面粘结的问题用复势方法化为一组三个复Caucby型奇异积分方程。采用修正的Gauss-Legendre和修正的Lobatto-Legendre数值求积法则化成一代数方程组,裂纹尖端的应力强度因子值可从代数方程组的解求得。本文计算得到了弹性半平面、刚体与弹性半平面相粘结、两种不同材料的弹性半平面相粘结的三种问题的几种几何形状的对称分叉裂纹的应力强度因子。本文的结果扩充了“应力强度因子手册”的内容。     

A user designer-based systems methodology

This paper develops the argument that in organizational redesign it is desirable to utilize user-designers as the architects for the redesign. A methodology is developed which emphasizes the use of ideal systems models by user-designers to plan for the organization's future. The methodology involves the creation of an ideal system model, then an analysis of the present system through the creation of root definitions and process models of the existing system. Then root definitions and process models for the idealized system are created. Finally, the two are compared and desirable changes are generated which bring the existing system toward the idealized.     

一类一阶线性非齐次方程组的解法

利用二阶线性微分方程的可解定理,给出一阶线性非齐次方程组的一种新解法     

无初始状态统计知识时多变量系统的最优平滑与预报

在无初始状态统计知识的情况下,我们分别就固定点平滑、固定滞后平滑与预报３种情况给出了动态系统的最优线性最小偏差估计（ＢＬＩＭＢＥ）,同时还给出了完全（ｉ,ｊ,Ｔｉ）－可重构性的概念及系统完全（ｉ,ｊ,Ｔｉ）－可重构的充要条件     

时变不确定非线性系统的鲁棒输出跟踪

该文研究了一为具有时变参数或扰动的非线性系统的鲁棒轨迹跟踪控制问题,假定系统的标称模型是可以反馈线性化的,通过递推构造壮环系统地的Ｌｙａｐｕｎｏｖ函数,给出了该类不确定系统鲁棒输出跟踪控制器设计方案。该控制器能保证闭环系统的状态是一致有界的,且通过对控制器参数的适当选择,可使闭环系统的输出跟踪达到指定的精度要求,最后由一机器人控制系统的仿真研究表明,该文提出了控制方案具有很强的鲁棒性,控制效果是令     

人机系统中作业域仿真研究

该文讨论了人机系统中人机表现功能及其关系。采用人体运动仿真确定最大作业空间,以保证操纵的合理性与可靠性。论述了立式镗庄的结构布局设计,采用按黄金分割比的造型比例,达到秸比例调和视觉效果,动画仿真模拟了立式镗庄的操纵过程。     

计算机支持的协同工作与多媒体会议系统

计算机支持的协同工作（ＣＳＣＷ）新近发展起来的一个跨学科的新兴研究领域,多媒体会议系统是ＣＳＣＷ中一个非常重要的研究项目,本介绍ＣＳＣＷ的基本知识的发展状况,同时介绍了一个多媒体会议系统的模型和应用。     

混沌理论与非线性经济系统

简述了混沌的定义、特征以及混沌系统的判定方法,并初步探讨了混沌理论在非线性经济系统中的应用,重点讨论了该理论在非线性经济结构的统计检验和经济系统控制等方面的应用