Reversed preservation of stochastic orders for random minima and maxima with applications

In this paper, reversed preservation properties of right spread order, total time on test order and increasing convex (concave) order when taking random minima and maxima are developed. In this context, reversed preservation properties of some ageing concepts are investigated under parallel (series) systems which are composed of a random number of i.i.d. components. Some applications in reliability and economics are given.     

字正腔圆:语言在歌唱艺术中的基本规则

咬字、吐字与发声的关系相辅相成,“字正”的同时且要注意行腔的圆润,力求注意自然语言与歌唱语言的区别。字头、字腹、字尾三者的发声应与语音两方面同时训练,不可忽视任何一方。     

土族头饰的文化内涵

本文从土族头饰类别、制作技艺、装饰功能等方面具体分析了蕴藏在土族头饰这一文化现象背后的民族历史、文化传统、价值取向和审美追求     

拓扑型极大极小不等式、截口定理和抽象经济平衡点的存在性定理

利用[1]中得到的参数型KKM定理首先证明了区间空间上的几个向量值极大极小定理。应用这些结果,得到了几个拓扑型截口定理和另外三种等价形式,最后讨论了抽象经济平衡点的存在性问题。     

Banach空间的一致极光滑性与平均一致凸性

给出了Ｂａｎａｃｈ空间的很极光滑性、一致极光滑性和平均一致凸Ｂａｎａｃｈ空间之间的关系．     

关于平均一致凸Banach空间

给出平均一致凸Ｂａｎａｃｈ空间的定义，证明了一致凸Ｂａｎａｃｈ空间是平均一致凸Ｂａｎａｃｈ空间，平均一致凸Ｂａｎａｃｈ空间是自反和弱局部一致凸Ｂａｎａｃｈ空间，并且平均一致凸Ｂａｎａｃｈ空间Ｘ中任意元在Ｘ的闭凸子集中存在唯一的最佳逼近元．     

前额正面头顶球技术的生物力学分析

从生物力学的角度分析了头顶球技术中关于力量和方向的规律,试图通过分析能使今后的头顶球教学与训练能有一个更深刻的、更明确的理论依据.     

有非负约束的线性模型

讨论有非负约束的线性模型的估计，证明了此模型可以用矩阵的消去变换来求解，主要应用于可靠性统计分析中。     

快速循环热处理对(Co_(0.35)Fe_(0.65))_(99)O_1薄膜磁性能的影响

针对(Co0.35Fe0.65)99O1薄膜,研究了两种不同热处理工艺对其磁性能的影响。结果表明:快速循环热处理可以改善高磁矩(Co0.35Fe0.65)99O1薄膜磁性能,在450°C几个快速循环热处理后,沉积薄膜的矫顽力从105下降到3Oe,电阻率下降到70%,a-Fe(Co)相晶粒尺寸可以减小到15～35nm,该处理方法较以往的热处理更能改善软磁薄膜的性能。     

On the Distance Between Cumulative Sum Diagram and Its Greatest Convex Minorant for Unequally Spaced Design Points

Abstract.  The supremum difference between the cumulative sum diagram, and its greatest convex minorant (GCM), in case of non-parametric isotonic regression is considered. When the regression function is strictly increasing, and the design points are unequally spaced, but approximate a positive density in even a slow rate ( n ^−1/3), then the difference is shown to shrink in a very rapid (close to n ^−2/3) rate. The result is analogous to the corresponding result in case of a monotone density estimation established by Kiefer and Wolfowitz, but uses entirely different representation. The limit distribution of the GCM as a process on the unit interval is obtained when the design variables are i.i.d. with a positive density. Finally, a pointwise asymptotic normality result is proved for the smooth monotone estimator, obtained by the convolution of a kernel with the classical monotone estimator.