ON A FINITENESS THEOREM ABOUT PROBLEMS INVOLVING INEQUALITIES

ＯＮＡＦＩＮＩＴＥＮＥＳＳＴＨＥＯＲＥＭＡＢＯＵＴＰＲＯＢＬＥＭＳＩＮＶＯＬＶＩＮＧＩＮＥＱＵＡＬＩＴＩＥＳ￥ＷＵＷｅｎｉｎｎ（ＷＵＷｅｎ－ｔｓｕｎ）（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＳｃｉｅｎｃｅ，ＡｃａｄｅｍｉａＳｉｎｉｃａ，Ｂｅｉｊｉｎｇ１...     

Bayes结构递归算法在目标类型和属性融合中的应用

应用Bayes结构递归算法,对一个目标类型和属性融合的应用实例进行计算。通过一定时间间隔的每一次测量值的变化,用Bayes算法计算目标类型和属性的概率值,多次递归计算后,概率值趋向于稳定,从而判定目标类型和属性。     

Design and simulation of digital channelized receivers in fractional Fourier domain

An approach is proposed to realize a digital channelized receiver in the fractional Fourier domain (FRFD) for signal intercept applications. The presented architecture can be considered as a generalization of that in the traditional Fourier domain. Since the linear frequency modulation (LFM) signal has a good energy concentration in the FRFD, by choosing an appropriate fractional Fourier transform (FRFT) order, the presented architecture can concentrate the broadband LFM signal into only one sub-channel and that will prevent it from crossing several sub-channels. Thus the performance of the signal detection and parameter estimation after the sub-channel output will be improved significantly. The computational complexity is reduced enormously due to the implementation of the polyphase filter bank decomposition, thus the proposed architecture can be realized as efficiently as in the Fourier domain. The related simulation results are presented to verify the validity of the theories and methods involved in this paper.     

S-粗集与它的分解-还原

利用S-粗集(singular     

一般自组织进化优化定理初探

考察斯图亚特.考夫曼等人,运用他们开发出的一套计算机模拟模型——NK模型,探究生态系统和非集中化组织是如何自发地向有序方向进化的。他们根据对一般自组织进化研究的成果,得出了一般自组织进化的优化定理,这就是自组织系统自发优化,优化的结果是共同进化的系统趋向处于有序和混沌的过渡阶段,靠近有序的一边。斯图亚特.考夫曼等人得出的一般自组织进化的优化定理具有普遍意义。     

具有倒位算子的图式定理的分析研究

图式定理是遗传算法的基本定理，它给出在选择、交换、变异算子的作用下，遗传算法的某一图式经过一步迭代后在下一代存在的数目的下界。本文将这一定理进行推广，给出了具有倒位算子的图式定理的表达式．并论证了引入倒位算子的必要性。     

S-rough sets and knowledge separation

1.INTRODUCTION GivensetX U,Risanequivalencerelationfamily ofU;[x]R;isanR equivalenceclass,andwehave Z.Pawlakroughsets(R-(X),R-(X))[10].Inset Uthereareriskelementswhichexistinriskestima tionsystem,earlywarninganalysissystem,etc.We can’tascertaintheirincursionorintrusiontosetX Uinprevious;theseelementshavethefollowingtwo features:u∈U,u∈-X f(u)=x∈X;x∈X f(x)=u∈-X.Inotherwords,duetotheeffectof f∈F,elementuwhichisnotinXturnsintof(u)=x,f(u)goesintoX;elementxwhichisinX,turnsinto f…     

IMPROVEMENT FOR FERRO''''S MINIMAX THEOREM

ＩＭＰＲＯＶＥＭＥＮＴＦＯＲＦＥＲＲＯ＇ＳＭＩＮＩＭＡＸＴＨＥＯＲＥＭ￥ＣＨＥＮＧｕａｎｇｙａ（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＳｃｉｅｎｃｅ，ＡｃａｄｅｍｉａＳｉｎｉｃａ，Ｂｅｉｊｉｎｇ１０００８０，Ｃｈｉｎａ）Ａｂｓｔｒａｃｔ：Ｔｈｉｓｎｏｔ...     

应用证据理论(D-S方法)解多传感器数据融合问题

应用证据理论(D-S方法)，解在多传感器条件下的数据融合问题。具体方法是根据多个传感器对目标类型判断的基本概率分配函数，不断添加新的传感器数据，更新信任函数和似然函数，最终判断目标类型。并且将D-S方法与其它数据融合方法(如Bayes方法)进行了比较，说明了D-S方法的优越性和先进性。     

合作竞争博弈模型及其应用

合作竞争已成为当今经济发展战略的大趋势，本文通过合作博奕与竞争博奕的优劣对比，提出合作竞争博奕模型，并用一类Minimax定理求解合作竞争博奕均衡。同时以非对称双寡头合作竞争产量博奕为例，将合作竞争博奕均衡与合作均衡和竞争均衡做了对比分析。     

基于数据库信息构建贝叶斯网络的GA方法

主要论述了以现实存在的大量数据库信息为基础构建贝叶斯网络 (BayesianNetworks ,BN)的主要问题。讨论了不确定性知识的图形表示方法 ,以及如何利用专家知识指导属性的排序与选择。鉴于网络结构的复杂度随论域中结点个数的增加呈指数上升 ,如何寻找最佳贝叶斯网络就成为NP -Hard难题 ,应用遗传算法 (GeneticAlgorithms,GA)给出了最佳贝叶斯网络设计的一种新方法 ,并进行了实例计算。     

S-rough sets and the discovery of F-hiding knowledge

Singular rough sets (S-rough sets) have three classes of forms: one-directional S-rough sets, dual of one-directional S-rough sets, and two-directional S-rough sets. Dynamic, hereditary, mnemonic, and hiding properties are the basic characteristics of S-rough sets. By using the S-rough sets, the concepts of f-hiding knowledge, F-hiding knowledge, hiding degree, and hiding dependence degree are given. Then, both the hiding theorem and the hiding dependence theorem of hiding knowledge are proposed. Finally, an application of hiding knowledge is discussed.     

冷备可修系统最优更换策略下的数学模型

研究了由一个修理工、两同型部件组成的冷贮备可修系统，在假定故障部件不能“修复如新”的条件下，利用几何过程对以下两种更换模型进行了研究：(1)以系统中部件1的工作寿命T为更换策略；(2)以系统中部件1的故障次数N为更换策略。在每种策略下，均推导出了系统经长期运行单位时间内期望效量的表达式，可以通过分析法或数值法求出其最优更换策略。最后，还在一定条件下给出了策略N比策略T优的充分条件。     

THE SINGULARLY PERTURBED NONLINEAR ELLIPTIC SYSTEMS

Mostudiedaclassofsingularlyperturbedboundaryvalueproblemsforellipticequationsin{3--8].Nowweconsiderthefollowingsingularlyperturbedproblemeisapositiveparameter,x=(xl,x2,'')x.)Ea,t]denotesaboundedregioninR",onsignifiesthepiecewisesmoothboundaryofa.Thispaperisconcernedwiththesingularlyperturbedproblem(1)--(2),andweconstructtheasymptoticexpansionsofsolution,anddiscusstheirasymptoticbehavior.Weneedthefollowinghypotheses:[HI]ThecoefficientsofL,fiandgiaresufficientlysmoothfunctionswithregardtothei…     

A NEW PROOF OF THE HADAMARD MONODROMY THEOREM AND THE PERIODIC SOLUTION FOR A CLASS OF O.D.E.SYSTEMS AT RESONANCE

Early in 1904,Hadamard[1]showed the scale implicit function theorem of finitedimensions.Then it was generalized to infinite dimensions.In this paper a new proof of this theoremis given and the unique existence of the periodic solution for a class of ordinary differential equationsystems at resonance is obtained.     

对多目标决策文献[1 ]和[2 ]的评注

首先,本文指出了文献［１］中“定义６”存在的问题,并给出了一个修正的定义。其次,本文指出文献［２］中定理的大部分条件是多余的,并对相关问题作了简要评述。     

贝叶斯估计和尺度空间滤波相结合的滤波方法

提出了一种贝叶斯估计和尺度空间滤波相结合的滤波方法。信号的小波系数表现出很强的非高斯统计特性,其密度函数可以用推广的拉普拉斯先验分布建模。利用贝叶斯估计能够较好地提取出信号的小波系数,再由小波逆变换恢复信号。贝叶斯估计较好地保留了信号的边缘信息,但滤波信号尚不够平滑。尺度空间滤波在保留信号边缘的同时,还有很好的平滑作用。两者相结合有很好的滤波效果。     

Remarks on a benchmark nonlinear constrained optimization problem

1 .INTRODUCTIONThe benchmark nonlinear constrained problemwas originally put forward by Hi mmelblau[1]in1972 , and ever since then it has been regardedas a benchmark nonlinear constrained opti miza-tion problem for intelligence opti mization algo-rithms . However , just because of the citationerror made by Homaifar[2]in 1994 , two abso-lutely different results are obtained by independ-ent researchers . This problem is reevaluated inthe present study and the best-known solutionfor the“mis…     

用线性系统理论分析相控阵天线

相控阵天线是一离散阵,它的波束控制采用了数字移相器。因所用的字长有限,必然对天线的性能有影响。本文用线性系统中的采样定理导出了阵元间距的约束条件,用付氏变换理论,计算出在有限字长时,对天线性能的影响,并在空间馈电的情形下,导出了方向图锐化等效于时域中脉冲压缩。     

S-粗集与F-隐藏知识发现

S-粗集具有三类形式:单向S-粗集,双向S-粗集,单向S-粗集对偶。S-粗集具有动态特性,遗传特性,记忆特性。利用单向S-粗集对偶与它的隐藏特性,本文给出f-隐藏知识,F-隐藏知识,隐藏度,隐藏依赖的概念,提出隐藏知识的隐藏定理,隐藏知识的隐藏依赖定理,给出F-隐藏与F-隐藏依赖在系统状态识别中的应用。