The Generalized Mean

This article defines the generalized mean and shows how it relates to such statistics as the arithmetic, geometric and harmonic means.     

半平面上无限级Dirichlet级数的超级

本文研究了右半平面上无限级Dirichlet级数的超级与它的系数间的关系 ,得到了两个充要条件。     

亏损矩阵的乘法可交换及其可传递的条件

定义了广义0-若当块及其广义幂，并以它们为工具，探讨了亏损矩阵的乘法可交换条件及其可传递的条件。     

Some Remarks on Stationary Thermistor Problem

ＳｏｍｅＲｅｍａｒｋｓｏｎＳｔａｔｉｏｎａｒｙＴｈｅｒｍｉｓｔｏｒＰｒｏｂｌｅｍＧｕａｎＰｉｎｇ（管平）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓａｎｄＭｅｃｈａｎｉｃｓ，ＳｏｕｔｈｅａｓｔＵｎｉｖｅｒｓｉｔｙ，Ｎａｎｊｉｎｇ２１００１８）Ｆ...     

环Z_(2k1+)上的广义准循环码

首先将广义准循环码的概念推广到环Z2k1+上,然后仿照Fq上广义准循环码的生成元的形式,给出了环Z2k1+上的1-生成元广义准循环码C的生成元的具体形式,最后通过给出C为Z2k1+自由模的充分条件,得出C为自由模时码C的维数及最小距离.     

广义凸性条件下一类多目标分式规划问题的最优性条件和对偶

本文在广义凸性条件下讨论了一类带扰动的多目标分式规划问题的最优性条件和对偶．将这类多目标分式规划问题转化为多目标规划问题,我们给出了原问题的最优性充分条件,并得到了弱对偶和强对偶结果．     

一类广义多值向量变分不等式问题

本文在Hauscloff拓扑向量空间中引入和研究了一类广义多值向量变分不等式问题,通过运用删定理证明了解的一些存在性定理,推广和改进了文献[3][5]的相关研究成果．     

整Dirichlet级数的一些性质

证明了Dirichlet级数g(s)=∑∞n=1anbne-λns,h(s)=∑∞n=1anbn-1e-λns和f(s)=∑∞n=1ane-λns(s=δ+it)在一定条件下有相同的级、下级、型和(p,q)(R)-级及下(P,q)(R)-级.     

Measuring the efficiency of teaching activities in Italian universities: An information theoretic approach

The measurement of teaching efficiency of Italian universities has become a topic of much interest and debate in recent years. The aim of this study is to fully explore the potential of panel data in the analysis of teaching efficiency both by modelling human capital formation in the university as a series of sub-processes and by using various models to account for observed and unobserved factors which generate heterogeneity. The new approach for estimating a stochastic frontier model based on the Generalized Maximum Entropy method provides further insights into the measurement of university teaching performance. The evolution of efficiency throughout the entire study period was also analyzed.     

Solution by step functions of a minimum problem in L2[0,T], using generalized h- and g-indices

In this article we solve a minimum problem involving step functions. The solution of this problem leads to an investigation into generalized h- and g-indices. This minimum problem and the related generalized h- and g-indices are studied in a general context of decreasing differentiable functions as well as in the specific case of Lotkaian informetrics. The study illustrates the use of h-and g-indices and their generalizations in a context which bears no relation to the research evaluation context in which these indices were originally introduced.