首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 609 毫秒
1.
ThisresearchissupportedbythePostdoctoralGrantofChina.1.IntroductionLetW(t)for05t相似文献   

2.
Based on the idea of the reduction of optimal control systems in singularperturbations of Lions and a priori estimates in [4], we prove the convergence of theoptimal control, state and the cost function between a singular linear elastodynamic systemand a limit system. Our asymptotic analysis is applicable to the optimal control of flexiblerobotic manipulators.  相似文献   

3.
1.IntroductionandMainResultTherearemanyexamplesconcerningtheformationofsingularitiesinthesoluti0nsofnon-linearpartialdifferefitialequations.Thus,althoughasolutionmaybesmoothinitially,itmaybecomesingularatsomelatertime(see[1-6]).However,T.Nishidahaspr0vedthatiftheCln0rmoftheinitialdataissufficientlysmall,thentheCauchyproblemadmitsauniqueglobalsmooths0lutionont2Otoareduciblequasilinearhyperbolicsystemwithfirst(lower)orderdissipativeterm(see[7]).Thereafter,manyauthorshavegeneralizedNishida'sr…  相似文献   

4.
1.IntroductionLetX,X1,X2,''beasequenceofn0n-degenerateindependelltidenticallydistributedra-n-domVarableswithcommondistributionfunctionF,andletXl,'',X2beanarrangementofXl,'Xnindecreasingorderofmagnitude,i.e.IX:l2''2IX2I.SetS;=Z:. ,X;.Forx>0,defineandforx=0,setG(O)=Q(O)=P(IXI>O),K(0)=0-DeAneLetrnbeanynon-decreasingsequenceofilltegerssuchthatwheref>0andwewritel2nforloglogn.By(1.1)and(l.2),forsufficientlylargentwecandeflneasequenceb.byP.S.Griffinl1Jobtainedthefollowingtheorem:R…  相似文献   

5.
应用子波及子波向量,结合自回归时间序列AR模型,给出了大型旋转机械轴心轨迹的识别方法.该方法不仅能够反映轨迹的总体特征,而且还一定程度地描述了x轴信号与y轴信号的相关性.实验表明本方法具有较高的识别率.  相似文献   

6.
The objective of the paper is to derive new simple criteria for the stability of alinear non-autonomous delay system by using a difference-differential inequality.  相似文献   

7.
In this paper we study the estimation of the regression function.We establish a law ofthe iterated logarithm for the random window-width kernel estimator and,as an application,fora nearest neighbor estimator.These results give sharp pointwise rates of strong consistency ofthese estimators.  相似文献   

8.
一般系统结构理论及其应用(Ⅰ)   总被引:5,自引:1,他引:4  
定义若干新概念,从数学上推导一个新的一般系统模型,即一般系统结构模型。  相似文献   

9.
相似集群分析方法及其应用   总被引:1,自引:1,他引:0  
提出一种相似集群分析方法及其在系统分析中的指标筛选与结构相似分类中的应用.该方法在本文中称为IGGT.它能同时完成结构相似分类与类主特征提取的功能,在本文中介绍该方法的原理、算法及在指标筛选中的应用.  相似文献   

10.
11.
基于动态沉没成本的更新时机优化模型   总被引:1,自引:0,他引:1  
赵国杰 《系统工程学报》1997,12(4):105-108,114
将沉没成本概念动态化后构建出设备更新时机选择的系统分析模型。该模型有助于设备更新进机优化问题的正确解决。  相似文献   

12.
用面向对象程序设计神经网络的算法类库   总被引:1,自引:0,他引:1  
依据面向对象的程序(OOP)设计的优越性,用C++语言,针对神经网络BP算法和GA算法,编写了神经网络及其算法类库:目的是为神经网络学习算法的发展和深入及其应用于工程提供方便和有利工具.且给出利用该类库实现的非线性系统辨识结果  相似文献   

13.
1.IntroductionA.Pazy[1]hastwicepointedoutthat"sofar,therearenoknownnecessaryandsufficientconditions,intermsofAortheresolventR(A;A),whichassurethecontinuityfort>0ofT(t)intheuniformoperatortopology".Dr.PengfeiYaol2]hasobtainedthecharacteristicconditionsofaCOsemigroupT(t)onaHilbertspace,whichassurethecontinuityofT(t)fort>0intheuniformoperatortopology.InthispaperweconsiderthecharacteristicconditionsofaCOsemigroupT(t)onaHilbertspace,whichassurethecontinuityofT(t)fort>to(to20)intheuniformoper…  相似文献   

14.
1 IntroductionLet (X, T, Y) denote random variables where X is the variab1e of interest, called the lifetimevariab1e, with distribution function (d.f.) F; T is the random 1eft truncation time with arbitraryd.f G and Y is the random right censoring time with arbitrary d.f. H. It is assumed that Xis independent Of (T, Y), bnt T and Y may be dePendent and, Without 1oss of generality thatthey are nonnegative. In the random 1eft truncation and right censoring (LTRC) model oneobserves (Z, T…  相似文献   

15.
层次分析中判断矩阵排序的一种新方法   总被引:2,自引:0,他引:2  
提出一种新的广义最小偏差法,给出了它的标准形,并对此方法的性质进行了研究.理论分析和仿真结果表明:应用广义最小偏差法对判断矩阵进行排序不但可行而且有效.  相似文献   

16.
秦松寿 《系统科学学报》2003,11(4):92-95,105
针对当前我国高校人才培养质量管理系统存在的问题,用系统论的思想,首先说明高校人才培养质量管理系统的优化应整体协调推进,然后分别就人才培养目标的合理定位、教育路径的科学选取、动力机制的有效构建等问题,从系统论的视角提出相关建议。  相似文献   

17.
ANALYSISOFBOUNDARYSHAPEOFSOLUTIONSOFNONLINEARPERTURBATIONPROBLEM¥HECheng;ZHANGWeitao(InstituteofSystemsScience,AcademiaSinica...  相似文献   

18.
对一种改进层次分析法误导的理论分析   总被引:4,自引:2,他引:2  
揭示了基于最优传递矩而建立的改进层次分析法产生误导的原因,从理论上否定了该法的一些错误论断。  相似文献   

19.
The general theory of the ANP enables one to deal with the benefits,opportunities,costs,andrisks(the BOCR merits)of a decision,by introducing the notion of negative priorites for C and Ralong with the rating(not comparison)of the top priority alternative synthesized for each of the fourmerits in terms of strategic criteria to enable one to combine the four B,O,C,and R values of eachalternative into a single outcome.Strategic criteria are very basic criteria individuals and groups useto assess whether they should make any of the many decisions they face in their daily operations.They do not depend on any particular decision for their priorities but are assessed in terms of the goalsand values of the individual or organization.Synthesis is made with two formulas,one multiplicativeand one additive subtractive that can give rise to negative overall priorities.This paper summarizesand illustrates basic complex decisions involving several control criteria under each of the BOCRmerits.  相似文献   

20.
网络最大流的割集矩阵算法   总被引:5,自引:0,他引:5  
利用网络单位流量及网络可行流的流量平衡关系,得出流量关系矩阵,由流量关系矩阵,得出网络割矩阵,从而求出网络图的割集,最后根据网络最大流等于最小割容量,求得网络最大流,此方法使得计算网络最大流变得简便,且具有很强的实用性.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号