用熵权的TOPSIS法评价城市经济实力

基于熵权的TOPSIS法,对山东省17个城市的经济实力进行了综合分析和评价.研究表明:青岛、烟台、济南三城市的综合经济实力相对较强,特别是青岛明显高于其它城市,各城市之间的经济发展不均衡.     

基于因子和聚类分析的县域经济发展研究——以河南省18个县(市)为例

建立县域经济发展评价指标体系,以河南省18个县(市)作为样本,运用因子分析方法进行实证分析,提取出综合经济实力因子、农业发展实力因子、生活质量因子、投资因子和第三产业发展因子5个主因子,并基于主因子得分矩阵对18个县(市)进行聚类分析.结果表明:反映经济发展整体水平和工业生产规模的综合经济实力因子处于主导地位,同时农业发展实力因子的作用也不可忽视.论文认为利用因子分析和聚类分析相结合的方法研究县域经济,所得结论客观、可信,能够较好地反映影响县域经济发展的主要因素.     

西部大开发中的各省区区位优势的多层次的主成分分析

本文利用多层次主成分分析法 ,对我国西部大开发中的八个省区综合实力的五个要素及多层指标体系 ,找出具有代表性的两个主成分 ,通过多层次分析综合及排序 ,用以描述各省的综合实力。结果说明 ,该法对多层次多指标研究社会经济问题是一可行的方法     

基于德尔菲-层次分析法和灰色关联分析的城市公共服务设施承载力评价研究

在当前我国城市化进程加快的形势下,承载政府基本公共服务职能和保障城市运行的城市公共服务设施承载能力面临压力和挑战.在对城市公共服务设施范畴、种类、配置、衡量标准等全面分析的基础上,采用文献法和德尔菲法从中小学教育设施、医疗卫生设施、文化体育设施、社会福利与保障设施、基础生活设施、道路与交通设施、环保卫生绿化设施七个方面确定17种具体公共服务设施并选取47个衡量指标构建城市公共服务设施承载力评价体系,并运用层次分析法计算指标权重.基于德尔菲-层次分析法构建的城市公共服务设施承载力评价体系,采用灰色关联分析法对全国35个城市公共服务设施承载能力现状与城市经济社会发展的协调程度进行实证,验证了构建城市公共服务设施承载力评价体系的价值意义.     

长三角地区城市经济综合实力的评价

为了对长江三角洲城市群的经济综合实力做合理的评价,提出用作为“纵横向”拉开档次法对城市综合经济实力进行评价,并通过16个城市的2000、2002和2003三年数据进行了实证分析,最后给出了这些城市综合经济实力的排序和分类.     

城市综合经济实力的主成份分析

欧俊豪等．城市综合经济实力的主成份分析．对全国１９个大城市的１９９３、１９９５二年数据进行了主成份分析,提出用第一主成份作为城市综合经济实力的度量,给出了这些城市综合经济实力的排序     

考虑环境因素的中国城市经济效率评价研究

在考虑环境因素情形下,实证考察中国城市经济效率水平.引入环境因素,构建中国城市经济效率评价指标体系;运用DEA-BCC模型对中国31个省会城市和计划单列市的经济效率进行评价,计算得出各决策单元的DEA评价值,并进行效率分析、投入冗余产出不足分析和区域比较分析.考虑环境因素情形下,中国城市经济效率总体上较好,综合效率、纯技术效率和规模效率平均值分别达0.912、0.855和0.940,但个体差异较大,存在个体间的非均衡发展;从规模报酬来看,太原、福州、南昌等10个决策单元的经济规模应适当增加;长春、哈尔滨、南京等9个决策单元的经济规模应适当减少;太原、长春、哈尔滨等16个决策单元存在不同程度的投入冗余和产出不足,亟待改进;中国城市经济效率存在区域间的非均衡发展,综合效率平均值呈现东部地区最高,中部地区次之,西部地区最低的格局.     

珠江三角洲城市综合经济实力的评价

章运用主成分分析及聚类分析的方法对珠江三角洲十二个城市的综合经济实力进行评价,排出它们的优劣;其方法简单易行,效果明显,这对于帮助各城市看到自己所处的位置,明确自己的经济实力提供了一个度量准则。     

长沙建设国家中心城市的对策研究

建设国家中心城市是长沙市近年的奋斗目标.长沙市怎样建设国家中心城市,可以从与国内其他国家中心城市的全面比照当中得到建设方案.一是从经济实力、产业结构、科教实力、金融行业发展、对外开放等代表城市综合实力的5个方面,二是从引领和辐射功能、集聚功能、物流枢纽功能等代表城市功能的3个方面,对长沙与国内5个国家中心城市(天津、重庆、成都、武汉、郑州)进行对比研究.通过对比,从国内5个国家中心城市的城市功能差别当中找准长沙的城市功能定位,从长沙市城市综合实力的差距和优劣势当中发现长沙建设国家中心城市所要解决的问题,为此提出长沙建设国家中心城市的建设对策.     

基于VAR模型的山东省产业发展系统评价

以山东省为例,以创新、协调、绿色、开放、共享的发展理念为指导,构建产业发展多指标评价体系,测算改革开放以来山东省产业发展演变情况,运用基于VAR模型的脉冲响应及方差分解分析产业发展的内在机制,结果表明:(1)山东省产业发展水平不断提高,经历了初期震荡缓慢增长、中期高速增长和后期持续增长.(2)产业发展系统结构逐渐优化,呈现出产业规模、结构、效益、创新、协调及绿色为一体的产业综合发展态势,目前主要面临提升效益和发展外向型产业的双重压力.(3)从冲击响应结果来看,产业规模及外向型产业对产业综合发展表现为正向效应;产业和谐程度对产业综合发展表现为负向效应;产业效益及产业绿色化对产业综合发展起初表现为正向效应,之后作用不稳定;产业结构和产业科技创新能力对产业综合发展的正向效应存在一定滞后期.(4)预测方差结果表明,子系统对产业综合发展的影响从高到低分别为:产业发展和谐程度,产业发展外向度,产业规模,产业科技创新能力,产业结构,产业绿色发展,产业效益.     

Structuring product development processes

This paper proposes operational frameworks for structuring product development processes. The primary objective of this research is to develop procedures to minimize iterations during the development process which adversely affect development time and costs. Several procedures are introduced to restructure the development process. The computation of the corresponding product development times is facilitated by two Markov models addressing different types of learning. The methodologies are employed to identify a set of managerial concerns in restructuring the product development processes.The developed framework has become an integral part of a re-engineering project for the development of rocket engines at Rocketdyne Division of Rockwell International. Throughout the paper, the methodologies are illustrated with the help of this process.     

Optimization of functionality development

The problem of regulation of logistic growth trends is examined in the framework of control theory for problems with infinite horizon. The problem statement is related to microeconomic models of dynamic optimization of a company’s indicator of functionality development. Various control regimes of functionality development are studied for identification of plausible production trends. Optimal control problem is posed to optimize the utility function of logarithmic consumption index of the system entropy type. Solution of the problem is constructed in analysis of the Hamiltonian system and its algebraic properties. Based on this analysis nonlinear stabilizers are elaborated which lead the system to the steady state with the same growth rates as the optimal control regime. The model is tested on the real time series of dynamic trends of functionality development for two generations of mobile phones in Japan.     

Optimal investment in development projects

We consider investments in development projects within competitive environments where the “winner takes everything”. Under stationary uncertainty, it is optimal to start investing immediately at full capacity and continue until exhausting the allocated budget. For non-stationary environments, active investment, possibly deferred, will always be at full capacity; an example demonstrates that further tractable structure may not be available.     

An experiment on program development

As a contribution to programming methodology, the paper contains a detailed, step-by-step account of the considerations leading to a program for solving the 8-queens problem. The experience is related to the method of stepwise refinement and to general problem solving techniques.     

Recent development of Faith conjecture

Is a semiprimary right self-injective ring a quasi-Frobenius ring? Almost half century has passed since Faith raised this problem. He first conjectured “No” in his book Algebra II. Ring Theory in 1976, but changing his mind, he conjectured “Yes” in his article “When self-injective rings are QF: a report on a problem” in 1990. In this paper, we describe recent studies of this problem based on authors works and raise related problems.     

Autovibrational development of laser cracks

The authors experimentally investigate the discontinuous ("jumping") character of the development of laser cracks in polymethyl methacrylate. The discontinuities arise in such an order that the crack remains rounded, even if the laser beam is rectangular in cross section. The authors estimate the pressure drop in the crack during a "jump."Institute of Problems in Mechanics, Academy of Sciences of the USSR, Moscow. Translated from Mekhanika Polimerov, Vol. 9, No. 3, pp. 475–481, May–June, 1973.     

Theoretical development of advance organizers

The author presents a case for theoretical development of advance organizers based on several theories discussed in the paper.