The Synthetic Prediction Pattern of Multiple Model Systems

In this paper,the problem of the synthetic prediction pattern of multiple modelsystems has been considered,Three synthetic prediction patterns have been presented and someof their properties have been analysed.     

Normative Evaluation of Community Projects: A Multimodal Systems Approach

This paper introduces an evaluation method for community projects based on the multimodal systems approach. The method differs from the common mechanistic approach to evaluation in four ways. Firstly, it uses the long-term life (viability) of a community as the ultimate criteria of evaluation. Secondly, it is normative; that is, it focuses on the responsibility of people to their own community and for managing their own lives. Thirdly, it is dynamic; it identifies factors that threaten a community and examines their dynamic link and long-term impact on the community. Fourthly, it evaluates the adequacy of a community activity (good practice) to help ensure its long-term viability. The method is illustrated with a European Union sponsored project.     

Systems Language for e-Democracy: Personal Resource Systems Management (PRSM), a Model and Action Research

In ancient Athens, the Agora was a place for collective decision making about personal and community issues. New Agoras, most recently Internet-enabled ones, now propose to enliven participatory democracy and establish systems by which our institutions can serve us and we can govern ourselves (B. H. Banathy, Guided Evolution of Society: A Systems View, Kluwer Academic/Plenum Press, New York, 2000). Effective participation in such activity will require a language and consciousness not currently in evidence, and learning beyond current parameters. In this article, high school students from Stephanie Williams' Child Development classes at McDowell High School, Millcreek Township School District, demonstrate use of a new paradigm. This model of Personal Resource Systems Management provides systems language for Agora discourse enabling effective participatory democracy.     

A Reputation Evaluating Model for Non-Government-Run Scientific Research and Technical Service Organizations

This paper presents a reputation evaluating model for non-government-run scientific research and technical service organizations of China. The model is composed of quantitative and qualitative factors, fuzzy comment set and weight vector. The fuzzy judgement technique is applied in the model. The application of the model is also demonstrated in the paper.     

Structure Underlies Other Organizational Determinants of Mental Health: Recent Results Confirm Early Sociotechnical Systems Research

Workplaces are implicated in the current global epidemic of mental illness. This paper presents early results from an action research project designed to investigate and prevent mental illness at work. It treats the organization as an open sociotechnical system where mental health is measured by self report and the affects experienced at work. Sick days are also measured. The study finds that the second genotypical, organizational design principle creates enabling conditions for mental health, many of which enablers such as trust and equality have previously been hypothesized as determinants of mental health. But the enablers are themselves consequent to a design principle. The results show how the second design principle creates the jointly optimized sociotechnical system that leads to enablers and positive outcomes, for people and the bottom line. This research reinforces the conclusion from the first study of sociotechnical systems that structure is a determinant of mental health.     

The Viable Systems Model Applied to a National System of Innovation to Inform Policy Development

This paper outlines how the viable systems model (VSM) can provide insights into a National System of Innovation by focussing on the necessary variety needed to match the system's changing external environment. Because an innovation system is more diffuse than a firm, the VSM needs to be described within an ‘ecological’ metaphor. This approach gives insights into the system's learning processes, showing that there can be a trade-off between variety and control for the system to maintain a fixed level of viability. Furthermore, for many innovation systemsthe coordination is ‘soft’; taking place through markets, through Government directions, and through relationships embodied in clusters, unions or industry groups, etc.Governments generally can only manage the system indirectly by facilitating the generation of the necessary variety, influencing strategic directions, filling gaps in the system and encouraging coordination. Societal or cultural innovations, such as new forms of citizen participation in decision-making, may well improve the viability of an innovation system. However, if these innovations are pursued for societal rather than economic purposes, they fall outside the usual definition of innovation within an NSI.     

Delay Model for Competitive Economic Systems

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实时仿真系统参考模型

实时仿真是一个重要研究领域,我们认为复杂实时仿真系统必须分解,进行分层功能描,因此,本文根据多年实时仿真工作经验,给出了仿真计算机的体系结构,文章借鉴PERTS[8]系统,提出了实时仿真系统的参考模型。即：TGM模型、AS算法调度器、RGM模型和RACP资源访问控制协议,文章通过例子阐述了此模型的逻辑功能和基本概念。     

多产品分销系统的利润模型

由多个制造商(生产不同产品)、一个地区分销中心和多个零售商(经销多种产品,如家电产品)组成的多阶段分销系统。在地区分销中心和多个零售商都采用周期检查的最大库存水平策略的前提下,分别给出了零售商、地区分销中心和制造商的单周期利润模型及零售商和地区分销中心的多产品服务水平定义。然后,以整个分销系统的利润为优化指标,以零售商和地区分销中心的多产品服务水平作为优化问题的约束条件,建立了较为全面的分销系统联合决策利润优化模型,通过该模型求解零售商和地区分销中心最优的最大库存水平。最后,给出一个算例说明了该优化模型的求解过程。     

利用时域相关的MIMO-OFDM信道估计算法

提出了一种适用于多入多出正交频分复用(MIMO-OFDM)系统的信道估计算法,详细说明了导频符号的特殊设计算法以及信道估计算法的原理,并对该算法的均方误差性能以及复杂度进行分析;该算法能够在信道多径时延信息准确已知或不准确时带来良好的估计精度,从而保证系统性能。将该算法应用于超三代-时分双工(B3G-TDD)系统中并在室外和室内环境下仿真,均方误差和系统误码率性能结果说明了该算法的有效性;该算法能够大大增强系统的鲁棒性。     

基于遗传算法的伺服系统摩擦参数辨识研究

LuGre摩擦模型能够精确描述摩擦环节的动态特性 ,但由于其高度非线性 ,使得参数辨识非常困难。针对LuGre摩擦模型 ,提出一种新型的基于遗传算法的模型参数两步辨识方法。首先通过Stribeck曲线 ,辨识出摩擦模型中的静态参数 ,然后由系统的稳态极限环振荡响应 ,辨识出摩擦模型的动态参数。在每一步辨识中 ,均采用遗传算法作为优化工具 ,从而避免了采用线性辩识方法时的局部极小问题。对提出的方法进行了数字仿真 ,并通过设计摩擦补偿环节 ,对辨识参数进行验证 ,结果表明了该方法的有效性。     

Linear Quadratic Regulation for Discrete-Time Systems with Input Delay: Spectral Factorization Approach

The infinite-horizon linear quadratic regulation （LQR） problem is settled for discretetime systems with input delay. With the help of an autoregressive moving average （ARMA） innovation model, solutions to the underlying problem are obtained. The design of the optimal control law involves in resolving one polynomial equation and one spectral factorization. The latter is the major obstacle of the present problem, and the reorganized innovation approach is used to clear it up. The calculation of spectral factorization finally comes down to solving two Riccati equations with the same dimension as the original systems.     

经济复杂系统的建模研究--人工经济模型

经济系统是一个由大量自由买卖主体构成的复杂适应系统,可以用基于Agent的计算经济学（Agent-based Computational Economics, ACE）方法进行研究.本文提出了一个自主开发的ACE系统：SIMECO模型.用CRA（Classifiers, Rules, Actions）三层结构对Agent建模可以得到比传统基于简单固定规则的ACE模型更丰富的涌现行为,包括社会分工的自发形成、价格围绕某一固定区间动态波动、流的自发出现并增长.进一步,计算机模拟实验中还形成了由集体大规模Agent自发的交易行为导致的交易网络之上的商品流,它会伴随着系统的进化而不断增强,并使得SIMECO中的大量Agent能更好地适应多变的环境.     

复杂社会经济系统研究的一个新模型——市场交易与政府关系的三角结构模型

分析了市场交易的基础地位和单个交易的过程模型,建立了交易与政府的三角结构模型,描述了市场交易中政府的基本作用,从方法论角度区分了市场经济体制中方法论个人主义、博弈论与三角结构模型的适用范围,探讨了市场交易与政府共同推动社会经济协同发展的关系问题.     

A Model for Design of Human Activity Systems

A background is given to the common failures of management information systems and the authors' view of the causes behind these failures. There seems to be a lack of effective methods for analyzing information requirements. Different scientific methods are discussed as to their propensity for analyzing the information requirements. The importance of the systems design approach instead of the system improvement approach is emphasized. The concept of Human Activity Systems is discussed and an analysis of the interdependence of the soft and hard parts of these systems indicates that an integrated view is necessary. A methodology based on a systemic and systematic analysis of the information requirements in an organization is proposed. This methodology focuses the settings of the decisions on all levels in organizations and also indicates organizational discrepancies and information imbalances. The methodology can be regarded as a dynamic, learning system.     

MIMO无线通信系统的统一建模

提出一种统一的多天线通信系统传输模型,该模型将收发间通道分为电路、近场区和远场区三部分,通过广义欧姆定律联系电路和近场参数,利用基于矩量法的广义阻抗矩阵精确描述多天线和近场区参数,通过基于远场近似的无线信道模型联系收发端的远区场;给出不同近场环境下的仿真结果,并在此基础上详细研究了天线互耦、失配和近区散射体对系统性能的影响,与已有结果进行了比较,分析了异同处。     

基于HLA分布式仿真系统的模型驱动设计方法

提出了一种基于HLA分布式仿真系统的模型驱动设计方法。首先提出基于MDA的分布式仿真系统开发框架，然后给出了使用UMLProfile创建HLA元模型的方法，最后分析了从领域元模型到平台元。模型的映射规则．该方法通过定义基于HLA／RTI分布式仿真平台的UMLProfile，订制了HLA元模型以扩充UML对于HLA仿真平台相关模型的描述能力，有利于分布式仿真系统的快速开发和构建，同时容易实现分布式仿真应用从底层RTI平台到其他中间件平台的迁移。     

一类多状态时滞不确定系统的鲁棒预测控制

针对一类多状态时滞多面体不确定对象,提出了一种鲁棒预测控制算法。基于参数相关的李亚普诺夫函数,给出了系统稳定的充分条件。通过求解满足若干线性矩阵不等式条件的上界值的最优化问题,获得了约束范围内满足系统鲁棒性能的最优控制律。优化问题的可行性保证了算法的鲁棒稳定性。仿真实例证明了该算法的有效性。     

IT创新概念流行度影响因素的研究——基于云计算的实证分析

信息技术(IT)创新概念的扩散流行和创新概念的实物化程度、相关概念的流行度、相关的商业关注问题等内容有关.文中通过文献内容分析方法获取IT创新概念及其相关概念的文献内容数量,然后通过K-L散度公式计算概念之间的关联程度,之后通过对概念做相关分析,对自变量做降维筛选,最后通过回归方法,对影响创新概念的相关影响因子进行分析.文中以云计算为实证探索了IT创新概念扩散流行度的影响因素和关联关系.     

保险系统损失分布模型新探

基于一定范围内的人口总量很大(可视为无穷大)，且保险人数为随量，每个被保险人的平均损失费各不相同时，导出被保险人总损失费的分布。较文[3]更具实用性。