Stochastic dominance in multicriterion analysis under risk

Traditionally, in the literature on the modelling of decision aids one notes the propensity to treat expected utility models and outranking relation models as rivals. It may be possible, however, to benefit from the use of both approaches in a risky decision context. Stochastic dominance conditions can be used to establish, for each criterion, the preferences of a decision maker and to characterise them by a concave or convex utility function.Two levels of complexity in preference elicitation, designated as clear and unclear, are distinguished. Only in the case of unclear preferences is it potentially interesting to attempt to estimate the value function of the decision maker, thus obtaining his (her) preferences with a reduced number of questions. The number of questions that must be asked of the decision maker depends upon the level of the concordance threshold that he(she) requires in the construction of the outranking relations using the ELECTRE method.     

非奇异H矩阵研究

给出了非奇异Ｈ矩阵的一个必要条件和一种简单实用的判定方法     

A hierarchy of lorenz curves based on the generalized tukey's lambda distribution

A hierarchy of Lorenz curves based on the generalized Tukey's Lambda distribution is proposed. Representations of the corresponding distribution and density function are also provided, together with popular inequality measures. Estimation methods are suggested. Finally, a comparison with other parametric families of Lorenz curves is established.     

Matrix mean square error comparisons based on a certain covariance structure

For two given estimators of a parameter vector the covariance structure of their difference is used to compare them in terms of their mean square error matrices. The results obtained are applied to the covariance adjustment technique and regression     

论劳动力胀供给膨对宏观经济运行的不良影响

劳动力供给膨胀问题是一个严重的社会问题,劳动力供给膨胀对宏观经济的运行产生许多不良影响,集中体现在市场经济效率、社会财富分配、社会稳定三个方面。研究劳动力供给膨胀对一个国家构建和谐社会具有重要的理论意义和现实意义。     

广义对角占优矩阵的充分条件

研究具有广泛应用背景的广义对角占优矩阵的充分条件，获得了几个简捷的实用结果。所得条件允许矩阵的非对角占优行可达ｎ－１行，运用于广泛的矩阵类。     

非奇H矩阵判别条件的推广

应用不可约矩阵的特性研究非奇H矩阵,得到了不可约矩阵是非奇H矩阵的实用判据。利用具非零元素链矩阵的性质得到其为非奇H矩阵的实用判据。所得结果不要求矩阵的对角占优条件,适用范围广,可作为非奇H矩阵的实用充分条件。     

狭义相对论中加速度a与力f的关系

本文针对关于狭义相对论中加速度ａ与力ｆ的方向关系的一些讨论［１］，采用更为直观、简单的方法，同样得出了加速度ａ与力ｆ的方向关系的普适结果；并通过典型例子较全面地讨论和描述了加速度ａ和力ｆ的方向和大小的相互关系，揭示了在狭义相对论和经典力学中ａ与ｆ相互关系的不同；并讨论了在ｖ／ｃ→０时它们的一致性，从一个侧面说明了经典力学的局限性。     

Lorenz non-consistent welfare and inequality measurement

Typical welfare and inequality measures are required to be Lorenz consistent which guarantees that inequality decreases and welfare increases as a result of a progressive transfer. We explore the implications for welfare and inequality measurement of substituting the weaker absolute differentials and deprivation quasi-orderings for the Lorenz quasi-ordering. Restricting attention to distributions of equal means, we show that the utilitarian model - the so-called expected utility model in the theory of risk - does not permit one to make a distinction between the views embedded in the differentials, deprivation and Lorenz quasi-orderings. In contrast it is possible within the dual model of M. Yaari (Econometrica 55 (1987), 99–115) to derive the restrictions to be placed on the weighting function which guarantee that the corresponding welfare orderings are consistent with the differentials and deprivation quasi-orderings respectively. Finally we drop the equal mean condition and indicate the implications of our approach for the absolute ethical inequality indices.     

社会支配取向量表在中国的信度和效度研究

本研究尝试修订西方的社会支配取向量表.359名大学本科生参与了研究.结果表明,社会支配取向量表修订后包含14个项目,量表具有较好的内部一致性、重测信度和一定的预测效度;中国被试社会支配取向得分普遍比西方的高;中文修订量表不同于西方的单因素或者双因素结构,它包括4个因素,即"反对群体平等"、"赞同优势群体的支配性"、"赞同劣势群体的较低地位"、"赞同维持等级差异".