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61.
把神经网络与数字信号处理相结合,提出并实现了一种基于神经网络的旋转机械在线故障监测系统,主要用于识别旋转机械的一些常见故障如转子不平衡振动、转子零部件松动、油膜涡动等等。系统主要由数字信号采集、数字信号预处理和B-P神经网络几部分组成。在神经网络中采用批处理加动量项的梯度下降算法学习。仿真结果表明该故障监测系统在故障识别率等各方面性能指标均优于传统的基于知识的工况监测与故障诊断系统。 相似文献
62.
63.
本文提出一个用于决策认知过程模拟的专家系统(Simulator).文中将决策过程表述为认知网络的形式,并通过启发式的人-机交互过程来引导决策人逐步完成认知网络的构造.文中还给出了用来辨识认知网络未知参数(边界值)的模糊数学规划模型. 相似文献
64.
Yuan-Huei HUANG Pei-Yeh CHANG Chih-Young HUNG Kuei-Ing WANG King-Jen CHANG 《系统科学与系统工程学报(英文版)》2006,15(2):247-255
1. Introduction Many countries with health insurance systems conduct periodic payment standardsadjustments. The main reasons are to address continually rising health care costs and to ensure an equitable allocation of resources. From the248 JOURNAL OF SYSTEMS SCIENCE AND SYSTEMS ENGINEERING data of the Organization for Economic Co-operation and Development (OECD) countries, the proportion of health care costs as a percentage of Gross Domestic Product (GDP) continues to r… 相似文献
65.
运用层次分析法,从过程指标和结果指标2大类型出发,构建了包括政策执行力、服务质量、接入程度、供电质量、用电水平和企业业绩等6大一级指标,17个二级指标的综合指标体系,并以湘西地区为例进行实证分析.研究表明,湘西地区农村电力普遍服务的总体水平相对较高,但在政策宣传力度、用电量增长率和供电成本等方面还十分薄弱;电力普遍服务显示出“空间传染”特性,从东向西呈现逐步减弱的态势,与地方经济发展水平之间具有显著的正相关性.在脱贫攻坚背景下,要实现电力普遍服务更好更快的发展,一是建立统一的电力普遍服务评价体系;二是重视政策宣传,引导居民合理用电;三是探索电力普遍服务扶贫模式. 相似文献
66.
为了公平、公正地开展高校贫困学生资助工作,利用层次分析法(AHP)建立评价指标体系,再用Matlab软件计算判断矩阵的特征值和特征向量.以3位高校贫困生为例,分别建立9组判断矩阵,并计算各矩阵的特征值和特征向量,再计算出指标体系中的权向量,最后评定特征向量最大者为最贫困大学生. 相似文献
67.
现代作战舰艇生命力的层次分析法综合评估 总被引:5,自引:0,他引:5
根据系统学的原理,运用层次分析的方法,对现代作战舰艇的整体生命力进行了全方位评估。结果表明,该方法简单有效,便于实际应用。 相似文献
68.
严于鲜 《四川理工学院学报(自然科学版)》2006,19(5):99-101
为了减小在构造线性回归方程过程中的计算量,增加所选择线性回归方程的准确性,文章在分析评价各种常见构造线性回归方程方法的基础上,引入一种新的构造方法——层次分析法。该方法能结合自身特点,有效利用问题的背景知识和相关专家的经验,准确方便地确定满足条件的线性回归方程。结果证明该方法有简单、准确、易行的特点。 相似文献
69.
Thomas L. Saaty 《系统科学与系统工程学报(英文版)》2004,13(2):129-157
The Analytic Network Process (ANP) is a multicriteria theory of measurement used to derive relative priority scales of absolute
numbers from individual judgments (or from actual measurements normalized to a relative form) that also belong to a fundamental
scale of absolute numbers. These judgments represent the relative influence, of one of two elements over the other in a pairwise
comparison process on a third element in the system, with respect to an underlying control criterion. Through its supermatrix,
whose entries are themselves matrices of column priorities, the ANP synthesizes the outcome of dependence and feedback within
and between clusters of elements. The Analytic Hierarchy Process (AHP) with its independence assumptions on upper levels from
lower levels and the independence of the elements in a level is a special case of the ANP. The ANP is an essential tool for
articulating our understanding of a decision problem. One had to overcome the limitation of linear hierarchic structures and
their mathematical consequences. This part on the ANP summarizes and illustrates the basic concepts of the ANP and shows how
informed intuitive judgments can lead to real life answers that are matched by actual measurements in the real world (for
example, relative dollar values) as illustrated in market share examples that rely on judgments and not on numerical data.
Thomas L. Saaty holds the Chair of University Professor, Katz Graduate School of Business, University of Pittsburgh, Pittsburgh, PA, and
obtained his Ph.D. in mathematics from Yale University. Before that he was a professor at the Wharton School of the University
of Pennsylvania for ten years. Prior to that he spent seven years at the Arms Control and Disarmament Agency in the State
Department in Washington, DC, that carried out the arms reduction negotiations with the Soviets in Geneva. His current research
interests include decision-making, planning, conflict resolution and synthesis in the brain. As a result of his search for
an effective means to deal with weapons tradeoffs at the Disarmament Agency and, more generally, with decision-making and
resource allocation, Professor Saaty developed The Analytic Hierarchy Process (AHP) and its generalization to dependence and
feedback, the Analytic Network Process (ANP). He is co-developer of the software Expert Choice and of the software Super Decisions
for decisions with dependence and feedback. He has authored or co-authored twelve books on the AHP/ANP. Professor Saaty has
also written a number of other books that embrace a variety of topics, including Modern Nonlinear Equations, Nonlinear Mathematics, Graph Theory, The Four Color Problem, Behavioral Mathematics, Queuing Theory,
Optimization in Integers, Embracing the Future and The Brain: Unraveling the Mystery of How It Works. His most recent book is Creative Thinking, Problem Solving & Decision Making. The book is a rich collection of ideas, incorporating research by a growing body of researchers and practitioners, profiles
of creative people, projects and products, theory, philosophy, physics and metaphysics...all explained with a liberal dose
of humor. He has published more than 300 refereed articles in a wide variety of professional journals. He has been on the
editorial boards of Mathematical Reviews, Operations Research, Naval Research Logistics Quarterly, Mathematical and Computer
Modeling, Socio-Economic Planning Sciences, Applied Mathematics Letters, and several others. He also served as consultant
to many corporations and governments. 相似文献
70.
英语阅读理解教学中关联理论的运用 总被引:3,自引:0,他引:3
刘武松 《萍乡高等专科学校学报》2006,(5):54-56
本文简析语用学中的关联理论,结合对阅读理解认知过程分析,分析了了关联理论对英语阅读理解的指导意义。 相似文献