广东省产业经济的投入产出实证研究——1987、1992、1997年广东省投入产出表比较分析

本文利用广东省统计局编制的 1987、1992、1997年投入产出表资料 ,从产业联系、产业结构和产业效益等方面对广东省产业经济进行比较分析 ,研究的结果对我省制定产业发展政策和其他经济政策有一定的参考价值。     

基于投入产出关联的区域产业部门角色演化研究——京津冀与东北地区的比较分析

文章利用2002年和2007年投入产出表,运用社会网络分析法对比分析了京津冀和东北地区的产业部门角色演化。结果表明:(1)京津冀产业发展越来越依赖于少数几个资源输出部门,东北地区提供资源的部门变化较小,而终端产业部门越来越多。对东北地区而言,高端装备制造业和科技服务业的关联作用有待增强。(2)京津冀和东北地区产业关联网络的分块趋势越来越明显。相比而言,东北地区逐步形成石油开采和加工业、高端装备制造业子群和金属机械制造业子群,但子群间的联系较弱,尤其是现代服务业与其他产业子群间的联系有待增强。     

关于现金流量表信息的分析与利用

本文从现金流量表定义出发 ,论述了编制现金流量表的必要性及作用 ,进而在此基础上 ,以比率分析的形式 ,分别从企业的盈利能力和盈利质量、偿债能力、融资与支付能力、再投资能力四个方面加以分析 ,并阐述了如何对这些指标有效运用     

Contingency tables with fuzzy information

ABSTRACT

This paper extends the classical methods of analysis of a two-way contingency table to the fuzzy environment for two cases: (1) when the available sample of observations is reported as imprecise data, and (2) the case in which we prefer to categorize the variables based on linguistic terms rather than as crisp quantities. For this purpose, the α-cuts approach is used to extend the usual concepts of the test statistic and p-value to the fuzzy test statistic and fuzzy p-value. In addition, some measures of association are extended to the fuzzy version in order to evaluate the dependence in such contingency tables. Some practical examples are provided to explain the applicability of the proposed methods in real-world problems.     

RAO'S STATISTIC FOR THE ANALYSIS OF UNIFORM ASSOCIATION IN CROSS-CLASSIFICATIONS

In this paper we introduce a new measure for the analysis of association in cross-classifications having ordered categories. Association is measured in terms of the odd-ratios in 2 × 2 subtables formed from adjacent rows and adjacent columns. We focus our attention in the uniform association model. Our measure is based in the family of divergences introduced by Burbea and Rao [1] Burbea, J. and Rao, C. R. 1982a. On the convexity of some divergence measures based on entropy functions. IEEE Transactions on Information Theory, 28: 489–495. [Crossref], [Web of Science ®] , [Google Scholar]. Some well-known sets of data are reanalyzed and a simulation study is presented to analyze the behavior of the new families of test statistics introduced in this paper.     

资金流量矩阵表预测中的DRAS法研究

在投入产出分析中RAS法已被广泛应用,主要用于对预测期的投入产出消耗系数矩阵进行修订和预测。随着研究的深入,RAS法有了很多改进,但如果需要两个矩阵共同平衡预测的时候,常规的RAS法或改进的RAS法都难以完成,而对资金流量矩阵延长表的预测,正是需要同时预测两个平衡矩阵的情况。鉴于此,讨论了一种双矩阵RAS(Double Matrix RAS,DRAS)的平衡方法,对这种方法进行了数学表述,并就其在资金流量矩阵表预测中的应用给出了说明。     

Clustering the Constitutive Elements of Measuring Tables Data Structure

This article deals with the clustering of the elements of a structure of juxtaposition of data measuring tables. One of the main issues in such problems is the selection of a one-dimensional quantity to represent the information included in the repeated observations of each variable. We propose the use of three different indices to measure the distance between elements of a structure and use the last one based on the Hilbert–Schmidt inner product for clustering purposes through an algorithmic procedure. The proposed algorithm is applied for clustering the customers of an electric company where each customer is described by a curve of load.     

对乒乓球不执拍手作用的探讨

文章对乒乓球运动中不执拍手的作用进行了研究,提出在乒乓球运动中不执拍手的作用是非常重要的．并对不执拍手在发球、维持身体平衡、运动整体性和参与击球中的作用进行了分析探讨．     

一种座位组合优化的计算方法及仿真分析

在餐饮服务收益管理中,座位组合与分配是一种重要的容量控制方法,它能够更好地实现餐厅供应结构与需求特征的匹配.本文提出了一种餐厅座位组合优化的计算方法,通过应用Flexsim系统仿真分析和实例研究,验证了该优化方法能够有效提高餐厅繁忙时段的资源分配效率,显著增加餐厅收益,提高收益率,缩短顾客 排队的平均等待时间,增加顾客满意度;在餐厅收益和顾客服务绩效两类指标上,都非常接近于枚举法给出的座位组合方案.该计算方法在理论上保持了与餐厅收益率RevPASH计算的一致性;在应用上易获取数据,计算过程简单,便于在管理实践中推广.