Integrating Knowledge－Based Simulation with Aspiration－Directed Model－based Decision Support System

ＩｎｔｅｇｒａｔｉｎｇＫｎｏｗｌｅｄｇｅ－ＢａｓｅｄＳｉｍｕｌａｔｉｏｎｗｉｔｈＡｓｐｉｒａｔｉｏｎ－ＤｉｒｅｃｔｅｄＭｏｄｅｌ－ｂａｓｅｄＤｅｃｉｓｉｏｎＳｕｐｐｏｒｔＳｙｓｔｅｍＦｅｎｇＳｈａｎ＆ＬｉＤ．Ｘｕ（ＤｅｐａｒｔｍｅｎｔｏｆＡｕｔｏｍａ...     

Stability of Singular and Time－Delay Measure Differential Large－Scale Systems with Impulse Effects

ＳｔａｂｉｌｉｔｙｏｆＳｉｎｇｕｌａｒａｎｄＴｉｍｅ－ＤｅｌａｙＭｅａｓｕｒｅＤｉｆｆｅｒｅｎｔｉａｌＬａｒｇｅ－ＳｃａｌｅＳｙｓｔｅｍｓｗｉｔｈＩｍｐｕｌｓｅＥｆｆｅｃｔｓＧＵＡＮＺｈｉｈｏｎｇ；ＬＩＵＹｏｎｇｑｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｕ...     

Stabilizing Decomposition of neutral Linear Time－invariant Large－Scale Control Systems With Multi－group Multi－delays

ＳｔａｂｉｌｉｚｉｎｇＤｅｃｏｍｐｏｓｉｔｉｏｎｏｆｎｅｕｔｒａｌＬｉｎｅａｒＴｉｍｅ－ｉｎｖａｒｉａｎｔＬａｒｇｅ－ＳｃａｌｅＣｏｎｔｒｏｌＳｙｓｔｅｍｓｗｉｔｈＭｕｌｔｉ－ｇｒｏｕｐＭｕｌｔｉ－ｄｅｌａｙｓ￥ＧａｏＣｕｎｃｈｅｎ；ＬＩＵＹｏｎｇｑ...     

Study on Optimal Dispatching Model for Multilake－Reservoir System of Kaidu－Kongque River and Tarim River~（12）

ＳｔｕｄｙｏｎＯｐｔｉｍａｌＤｉｓｐａｔｃｈｉｎｇＭｏｄｅｌｆｏｒＭｕｌｔｉｌａｋｅ－ＲｅｓｅｒｖｏｉｒＳｙｓｔｅｍ　ｏｆＫａｉｄｕ－ＫｏｎｇｑｕｅＲｉｖｅｒａｎｄＴａｒｉｍＲｉｖｅｒ~（１２）ＳｔｕｄｙｏｎＯｐｔｉｍａｌＤｉｓｐａｔｃｈｉｎｇＭｏｄ?..     

Study on Variation of Parameters Formula and Stability for Impulsive Time－Delay Nonlinear Large Scale Systems

ＳｔｕｄｙｏｎＶａｒｉａｔｉｏｎｏｆＰａｒａｍｅｔｅｒｓＦｏｒｍｕｌａａｎｄＳｔａｂｉｌｉｔｙｆｏｒＩｍｐｕｌｓｉｖｅＴｉｍｅ－ＤｅｌａｙＮｏｎｌｉｎｅａｒＬａｒｇｅＳｃａｌｅＳｙｓｔｅｍｓＧＵＡＮＺｈｉｈｏｎｇ（Ｄｅｐｔ．ｏｆＢａｓｉｃＳｃｉｅｎｃ...     

ON TAKEUCHI EFFICIENCY IN TWO CLASSES OF SINGLE－PARAMETER TWO－SIDED TRUNCATED DISTRIBUTIONS

ＯＮＴＡＫＥＵＣＨＩＥＦＦＩＣＩＥＮＣＹＩＮＴＷＯＣＬＡＳＳＥＳＯＦＳＩＮＧＬＥ－ＰＡＲＡＭＥＴＥＲＴＷＯ－ＳＩＤＥＤＴＲＵＮＣＡＴＥＤＤＩＳＴＲＩＢＵＴＩＯＮＳＬＩＡＮＧＨｕａ（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｍｅｓＳｃｉｅｎｃｅ，ＡｃａｄｅｍｉａＳ...     

A Nonprecedence－based Query Schedule Algorithm on Heterogeneous Multiprocessor System

ＡＮｏｎｐｒｅｃｅｄｅｎｃｅ－ｂａｓｅｄＱｕｅｒｙＳｃｈｅｄｕｌｅＡｌｇｏｒｉｔｈｍｏｎＨｅｔｅｒｏｇｅｎｅｏｕｓＭｕｌｔｉｐｒｏｃｅｓｓｏｒＳｙｓｔｅｍ￥ＨｅＪｕｎ；ｂａｎｇＤｉｎｇｘｉｎｇ＆ＺｈｅｎｇＷｅｉｍｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＣｏｍｐ...     

Some Techniques for Solving Ordinary Differential Equations with Discontinuities in Real－time Simulation

ＳｏｍｅＴｅｃｈｎｉｑｕｅｓｆｏｒＳｏｌｖｉｎｇＯｒｄｉｎａｒｙＤｉｆｆｅｒｅｎｔｉａｌＥｑｕａｔｉｏｎｓｗｉｔｈＤｉｓｃｏｎｔｉｎｕｉｔｉｅｓｉｎＲｅａｌ－ｔｉｍｅＳｉｍｕｌａｔｉｏｎ￥ＸｉｅＹａｊｕｎ；ＬｉｕＤｅｇｕｉ＆ＬｉＢｏｈｕ（Ｂｅｉｊｉｎ...     

Existence and Stability for Periodic Solution of Competition Reaction－Diffusion Models with Grazing Rates in Population Dynamics

ＥｘｉｓｔｅｎｃｅａｎｄＳｔａｂｉｌｉｔｙｆｏｒＰｅｒｉｏｄｉｃＳｏｌｕｔｉｏｎｏｆＣｏｍｐｅｔｉｔｉｏｎＲｅａｃｔｉｏｎ－ＤｉｆｆｕｓｉｏｎＭｏｄｅｌｓｗｉｔｈＧｒａｚｉｎｇＲａｔｅｓｉｎＰｏｐｕｌａｔｉｏｎＤｙｎａｍｉｃｓ￥ＬＩＵＹｏｎｇｑｉｎｇ...     

Discussion About the Paper ＂The Eigen－Problem of Matrix in Max－Algebra－Analysis for Operating Period of A Class of DEDS＂

ＤｉｓｃｕｓｓｉｏｎＡｂｏｕｔｔｈｅＰａｐｅｒ＂ＴｈｅＥｉｇｅｎ－ＰｒｏｂｌｅｍｏｆＭａｔｒｉｘｉｎＭａｘ－Ａｌｇｅｂｒａ－ＡｎａｌｙｓｉｓｆｏｒＯｐｅｒａｔｉｎｇＰｅｒｉｏｄｏｆＡＣｌａｓｓｏｆＤＥＤＳ＂ＷＡＮＬｉａｎｇｑｉａｏ（Ｄｅｐｔ．ｏｆＭａ...     

多专家集成式决策支持系统探讨

本文在文献[1]给出集成式决策支持系统(I—DSS)的基本概念及提出I—DSS的两种主要形式的基础上,对I—DSS的形式之一——多专家集成式决策支持系统(MEI—DSSS)作了较深入的探讨。本文阐述了MEI—DSS提出的原因,给出了MEI—DSS的基本概念,概述了MEI—DSS同相关学科和技术的关系,提出了MEI—DSS的基本结构框架,并从知识表示、推理机制以及多专家系统动态组合进行问题求解的算法实现等方面探讨了该系统在大型决策中的应用。本文最后提出了MEI—DSS今后有待深入研究的课题。     

一类切换时滞奇异系统的最优保成本控制

针对一类切换时滞奇异系统,对最优保成本控制问题进行了研究。利用Lyapunov函数方法和凸组合技术,给出了由线性矩阵不等式(linear matrix inequality, LMI)表示的保成本控制器存在的充分条件,并设计了相应的子控制器和切换规则。进一步,建立了一个具有线性矩阵不等式约束的凸优化问题,利用Matlab软件中的线性矩阵不等式工具箱求解,给出了最优保成本控制器的设计方法及闭环最小性能指标上界。仿真示例验证了该方法的有效性。     

A Comparison of Interactive Planning and Soft Systems Methodology: Enhancing the Complementarist Position

Flood and Jackson (1991) explain the diversity of systems-based methods with a pluralistic System of Systems Methodologies by categorizing the various methods according to the problem context for which they are deemed to be best suited. The two methods classified as most appropriate for complex-pluralistic problems, Ackoff's Interactive Planning and Checkland's Soft System Methodology, are compared according to their underlying theory, problem-solving techniques, and outcomes. Despite their shared focus on the same problem context, the two methods are derived from different ontological assumptions which yield different techniques and outcomes. An argument is presented for conducting additional comparisons of methods that address the same problem context.     

知识封装及知识型复杂系统

本文描述了复杂系统综合集成的一种新的方法--知识封装及其在知识封装上建立知识型复杂系统的过程, 探讨了知识在复杂系统中的作用及其介入的深度。采用知识封装后, 无法符号化的问题求解模块可以统一在知识系统的框架下进行处理。最后通过两个示例来说明如何对问题求解模块进行知识封装。     

航天企业基于知识流的知识管理体系框架

针对航天企业实施知识管理的薄弱环节,从系统工程角度出发,在简述企业知识管理体系基本功能的基础上,提出了基于知识流的知识管理体系框架和主要设计原则。重点阐述了基于知识流的航天企业知识管理框架模型和知识管理体系框架,并针对航天企业科研生产一体化的特点,分析了航天型号全寿命过程中从预研到研制过程的知识管理流程,以及研制过程与批生产过程的知识集成模式。对知识管理体系框架下科研生产一体化的发展趋势进行了初步探讨。     

Efficient multiuser detector based on box-constrained deregularization and its FPGA design

Multiuser detection can be described as a quadratic optimization problem with binary constraint.Many techniques are available to find approximate solution to this problem.These techniques can be characterized in terms of complexity and detection performance.The "efficient frontier" of known techniques include the decision-feedback,branch-and-bound and probabilistic data association detectors.The presented iterative multiuser detection technique is based on joint deregularized and box-constrained solution to quadratic optimization with iterations similar to that used in the nonstationary Tikhonov iterated algorithm.The deregularization maximizes the energy of the solution,this is opposite to the Tikhonov regularization where the energy is minimized.However,combined with box-constraints,the deregularization forces the solution to be close to the binary set.We further exploit the boxconstrained dichotomous coordinate descent (DCD) algorithm and adapt it to the nonstationary iterative Tikhonov regularization to present an efficient detector.As a result,the worst-case and average complexity are reduced down to 2.8 and 2.5 floating point operation per second,respectively.The development improves the "efficient frontier" in multiuser detection,which is illustrated by simulation results.Finally,a field programmable gate array (FPGA) design of the detector is presented.The detection performance obtained from the fixed-point FPGA implementation shows a good match to the floating-point implementation.     

The problem-solving system: Another problem-content system

The aim of this article is to obtain specific and general learning lessons pertaining to Soft Systems Methodology (SSM) and related human activities. Some of these activities, which are of particular concern in this paper, occur within a problem-solving system (PSS), i.e., when an analyst playing the role of problem solver tackles a problem-situation (P-S)-here known as the problem-content system (PCS). It is postulated that on many occasions, depending on the way the P-S is faced, the PSS may become another PCS depending on the behavior of the solvers when facing that P-S. Such behavior is subject not only to intellectuality but also to ethics and beliefs. Initially I draw up distinctions between a PSS and a PCS and, at once, define several important terms used in SSM. An overview of three case studies carried out in Peru is presented next. Some specific and general learning lessons obtained from the analysis are then presented. Although the studies relate to concepts of SSM, the conclusions that emerge are equally applicable to many P-S's and problem-solving approaches.     

IT绩效影响与组织规模调节效应:来自机械行业的实证分析

信息化浪潮为传统制造业发展提供了机遇和挑战. 但是, 如何描述和测量信息化投入对组织绩效的影响, 一直是困扰国内外相关领域研究者和实践者的重要问题. 研究构建了一个概念模型, 尝试探索信息化基础建设、 专项业务应用和协同集成等信息化行动模式对组织绩效的影响, 以及组织规模变量的调节效应. 基于重型机械行业企业的调查数据, 研究运用结构方程模型进行了实证分析, 并探讨了分析结果的理论价值及对信息化建设路径选择的实践意义.     

多媒体通信及其ATM网络实现技术

本文主要讨论多媒体通信及其实现技术。文中先描述了一种适应于多媒体通信的层次体系结构模式；接着论述了多媒体通信中网络的有关技术特征；然后以ＡＴＭ网络为实例，讨论了多媒体通信的实现技术。     

An extended model for project portfolio selection with project divisibility and interdependency

In this paper, we develop an extended model for the project portfolio selection problem over a planning horizon with multiple time periods. The model incorporates the factors of project divisibility and interdependency at the same time for real-life applications. The project divisibility is considered as a strategy, not an unfortunate event as in the literature, in choosing the best execution schedule for the projects, and the classical concept of “project interdependencies” among fully executed projects is then extended to the portions of executed projects. Additional constraints of reinvestment consideration, setup cost, cardinality restriction, precedence relationship and scheduling are also included in the model. For efficient computations, an equivalent mixed integer linear programming representation of the proposed model is derived. Numerical examples under four scenarios are presented to highlight the characteristics of the proposed model. In particular, the positive effects of project divisibility are shown for the first time.