数据包络分析与佛山产业经济效益评价

运用数据包络分析的方法， 分析佛山市产业经济效益的状况为： 佛山市基础产业和生活必需品产业的发展较好； 一般产品制造业的规模报酬率较高， 具有一定的发展潜力； 传统产业的产出弹性越来越小， 应当加以限制发展     

机构可靠性的分析

介绍了机构各类典型失效模式,并对之作了概略分析,提出了机构正常运转功能可靠性的分析方法及机构磨损可靠性、防滞卡可靠性的分析方法,对机构可靠性设计作了概要阐述。     

关于两部定价的理论研究

通过存在两类消费者情况下的两部定价模型推导出了最优两部定价公式。表明最优边际价格由各类消费者的偏好差异程度及边际生产成本决定，而固定费用主要取决于对商品具有较低效用评价的消费者的需求，并推导了固定费与需求弹性的关系以及最优边际价格的范围。     

基于弹性理念的苏州流动摊贩区布局模式和规划对策研究

流动摊贩区问题成为我国越来越多城市发展中久治不愈的顽疾,而与之有关的处理方法往往太过简单生硬,由此而引发了许多值得深思的现实问题。笔者从规划的角度出发,以弹性理念为指导,实地调研了苏州5大城区流动摊贩区状况,分别从流动摊贩区的经营特征、活动特征、分布形态特征对其进行分析,探寻其在区域内的时空分布规律,旨在研究出一套行之有效的布局模式和规划对策,为城市处理流动摊贩区问题提供一种新的思路和借鉴。     

Analysis on China's Labor Supply and Demand Trend for a Long-term

The paper take Leslie method to forecast China's total population and its age distribution structure from 2015 to 2050,and then predict the total labor supply of the working-age population,estimate the total demand for labor according to the employment elasticity of the economic growth,calculated the gap between labor supply and demand.The results show that both the labor supply and demand showed a decreasing trend,but the supply reduced faster than demand,after 2015,the labor market appears shortage,the gap between supply and demand will exist for a long time and have a tendency to expand.Facing of the new situation and new problems of the labor market,we recommend some corresponding policy.     

技术进步的来源、方向与工业节能减排

运用偏向性技术进步理论,构建了CES生产函数形式下的内生增长框架,研究了技术进步的来源和方向对工业节能减排的影响。研究发现,随着后危机时代技术投入增长,如果没有政策干预,企业的研发投入和引进技术支出使技术进步更偏向于资本增强和能源使用;而能源价格降低激励市场主体更多地投入研发于非能源要素使用,在替代弹性小于1的条件下,非能源要素增强型技术进步反而增加了能源消耗。因此,不仅要发挥市场在要素结构调整中的决定性作用,而且要通过政策干预,增加能源增强型科技投入的补贴力度,扩大能源增强型技术设备进口关税优惠,寻求节能减排和经济增长之间的平衡。     

Residents,recreationists, ridge regression,and revenues:the five r's of florida's motor- tax

Ridge regression is applied to the question of how to revise Florida's motor-fuel tax to remedy the shortfall of its transportation revenues. Along the way a model of gasoline consumption by residents and tourists is presented, and the differences in consumption patterns between the two types of purchasers are reported.     

基于扩展线性支出系统模型的我国城镇居民消费结构分析

根据统计资料,运用扩展线性支出系统模型,对1993～2006年间我国城镇居民消费结构进行计量研究,对居民边际消费倾向、收入弹性、自价格和交互价格弹性等进行数量分析,对我国城镇居民消费趋势进行预测,并提出一些政策性建议,旨在为促进国内市场与消费需求持续稳定增长提供参考。     

An optimal credit policy to increase supplier's profits with price-dependent demand functions

This paper deals with the problem of determining an optimal length of credit period from the perspective of supplier. We assume that a retailer jointly determines the unit retail price and order size to maximize profit when he/she purchases a product for which the supplier offers a trade credit. Two widely used demand functions are adopted for the study in which demands are decreasing functions of the retail price. A procedure is presented which shows how to achieve an optimal length of credit period for suppliers. The effects of credit period on the behaviour of retailers are also investigated using an example.     

Discrete Probability Distributions for Probabilistic Fracture Mechanics

Recently, discrete probability distributions (DPDs) have been suggested for use in risk analysis calculations to simplify the numerical computations which must be performed to determine failure probabilities. Specifically, DPDs have been developed to investigate probabilistic functions, that is, functions whose exact form is uncertain. The analysis of defect growth in materials by probabilistic fracture mechanics (PFM) models provides an example in which probabilistic functions play an important role. This paper compares and contrasts Monte Carlo simulation and DPDs as tools for calculating material failure due to fatigue crack growth. For the problem studied, the DPD method takes approximately one third the computation time of the Monte Carlo approach for comparable accuracy. It is concluded that the DPD method has considerable promise in low-failure-probability calculations of importance in risk assessment. In contrast to Monte Carlo, the computation time for the DPD approach is relatively insensitive to the magnitude of the probability being estimated.