集值映射下的向量均衡问题解的存在性

利用广义的截口定理,本讨论集值映射和变序下的向量均衡问题解的存在性。     

A RELATIVE BENEFIT ALGORITHM FOR BASIC ECONOMIC LOT SIZE PROBLEM

1 IntroductionMany problems in inventory control, production planning can be formulated in terms of asimple economic lot size model proposed by H.M.wagner and T.M.Whitin(1958). Since 1958, theManne-Wagner-Ehitin model has received considerable attention, and several hundred paPershave directly or ndirectly discus8ed this model; most Of these paper8 have either eXtended thismodel or proYided efficient algorithms for production problems that arise in it. (In particular,see Florian, Lenstra…     

含控制参数的抽象动力方程连值问题之积分算子求解法

讨论一类抽象Volterra型积分算子,利用此获得含控制参数的抽象动力方程边值问题的解。这种新的求解法我们称为积分算子求解法。     

A QP-FREE AND SUPERLINEARLY CONVERGENT ALGORITHM FOR INEQUALITY CONSTRAINED OPTIMIZATIONS

1 IntroductionConsider tl1e optimizatioll problemndn{f(x): gj(x) 5 0, j e I, x E R"}, j1)where f(x), gj(x): R" - R, j E I = {l,2,...,m}.We know tl1e quasi-Newton meth.d[1]'[9]1[5]1[1O1 is one of the most effective methods to solveproblenl (1) due to its property of superlinear convergence and is still all hot topic at presenttime, which attracts a Iot of authors to make iInprovemellt both in theory a1ld app1ication.Fechinei and Lucidi[3] in 1995 proposed a locally superlinearly convergell…     

Generalized Rule Induction Based on Immune Algorithm

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　Ａｒｕｌｅｉｎｄｕｃｔｉｏｎｓｔｒｕｃｔｕｒｅｉｓａｓｅｔｏｆｈｉｅｒａｒｃｈｉｃａｌｌｙｒｅｌａｔｅｄｃｌａｓｓｅｓ,ｗｈｅｒｅｈｉｅｒａｒｃｈｉｃａｌｌｙｈｉｇｈｅｒｃｌａｓｓｅｓｓｕｂｓｕｍｅｔｈｅｉｒｌｏｗｅｒｃｏｕｎｔｅｒ ｐａｒｔｓ .Ｉｔｃａｎｂｅｖｉｅｗｅｄａｓａｎｉｎｄｅｘ .Ｉｔｓｕｔｉｌｉｔｙｉｓｏｂｖｉｏｕｓｆｒｏｍｔｈｅｅｆｆｉｃｉｅｎｃｙｐｏｉｎｔｏｆｖｉｅｗ .Ｂｕｉｌｄｉｎｇｓｕｃｈａｓｔｒｕｃｔｕｒｅｉｓａｄｉｆｆｉｃｕｌｔｔａｓｋｆｏｒ…     

Using the Chiral Organophosphorus Derivatizing Agents for Determination of the Enantiomeric Composition of Chiral Carboxylic Acids by ^31PNMR Spectroscopy

The use of chiral organophosphorus derivatizing agents prepared in situ from chiral tartrate or chiral diamine for the ^31PNMR determination of the enantiomeric composition of chiral carboxylic acids is described. The method is accurate, reliable and convenient.     

THE MAZHUANG RESERVOIR IN THE JUNGGAR BASIN (Ⅰ)——GEOCHEMICAL CHARACTERISTICS OF NATURAL GAS

The Mazhuang gas reservoir is located in the eastern part of the Junggar Basin. Itsgas-producing pool is averagely 2000 m deep. It is a mid-shallow reservoir. The natural gasrich 2--7% of C_2-C_4 gaseous hydrocarbons is mainly composed of methane. δ~(13)C_(CH_4). valuesare--47----45‰, heavier than microbiogenic gas, and lighter than coal--type gas as well asoil--associated gas. The maternal materials of gas source rocks are primarily from the type-Ⅲ organic matter at the low--mature stage (0.5%相似文献   

万有Teichmller空间与Loewner链

提要通过采用构造Loewner链的方法,得到了单叶函数的充分条件,同时,结合万有Teichm(u|¨)ller空间理论,利用Loewner链构造了单叶函数的拟共形扩张表达式,并且得到了一些拟圆区域的单叶性内径的下界估计不等式.     

可修排队系统可靠性指标的分解特性

本文提出了分析可修排队系统的另一途径-分解法,剖析了一些典型可修排队系统的结构,即是经典排队系统模型与经典可靠性系统模型的一种卷积关系.应用提出的分解分析法,我们不仅可推导出在交通强度ρ<1时的有关结果,而且可得到在交通强度ρ≥1时的有关结果和一些重要的分解关系式.它使得我们把对可修排队系统的研究,转化为分别对经典排队系统与经典可靠性系统的研究,降低了对可修排队系统研究的难度.     

多元线性混合模型方差分量矩阵的非负估计

本文研究了带有两个方差分量矩阵的多元线性混合模型方差分量矩阵的估计问题.对于平衡模型,给出了基于谱分解估计的一个方差分量矩阵的非负估计类.对于非平衡模型,给出了方差分量矩阵的广义谱分解估计类,讨论了与ANOVA估计等价的充要条件.同时,在广义谱分解估计的基础上给出了一种非负估计类,并讨论了其优良性.当具有较小二次风险的非负估计不存在时,从估计为非负的概率的角度考虑,将Kelly和Mathew(1993)提出的构造具有更小取负值概率的估计类的方法推广到本文的多元模型下,给出了较谱分解估计相比有更小取负值概率和更小风险的估计类.最后,模拟研究和实例分析表明文中理论结果有很好的表现.