Planning for the Australian information economy

This study spotlights the inadequacy of the sectoral modeling used hitherto to analyse structural change in Australia. Although the multiplier and key-sector results demonstrate that contemporary Australia is predominantly an industrial economy, in the next decade the growth of the information intensiveness of economic activity or informatization will accelerate. A sectoral model clearly identifying the information sector is proposed to study the implications of the growing information intensiveness of the Australian economy. A methodology to identify the primary information economy or information commodities traded in the market is explained. The macroeconomic scenarios—income and price implications—of programming for various targets of information sector activities are analysed. Three plausible informatization targets are hypothesised: Luddite or zero growth; laissez-faire or continuing the status quo and sunrise or accelerated performance. The significance of Leontief accounting prices based on competitive equilibria and the shadow prices connoting opportunity costs of the linear programming dual are examined. Fiscal policies to subsidise positive externalities generated by informatization, in the fase of intractability of the Pigouvian ideal taxes are briefly reviewed. Finally, the need for anticipatory policy decisions in Australia to harness the full benefits of informatization is emphasised.     

基于PC运动控制器的多轴连续运动轨迹控制

本文针对固高科技公司的GT-400-SV系列运动控制器,在四轴运动开发平台上,利用PC机主控,通过实例的方式,采用高级语言VC完成传统3轴联动数控铣床典型零件手工程序的编制,通过实例证明,基于VC的运动控制器,在PC上经简单编程即可实现运动控制,而不一定需要专门的数控软件。可以实现多轴运动轨迹控制,给用户提供了很大的软件开发空间。     

电子产品逆向物流网络规划模型研究

在分析和比较各类回收网络特点的基础上,提出了一种适合中国电子废弃物回收物流管理和分析的正逆向集成回收网络结构,该结构较现有其他研究将维修/退货产品及二手市场收益作为考虑要素,在此基础上考虑到电子废弃物回收过程的不确定性,建立了基于混合整数线性规划(MILP)方法的以网络建设和运营费用最小为目标函数的物流网络模型,并采用案例数据对模型的适用性加以验证。     

基于MATLAB的人口预测方法分析

本文运用曲线拟合、灰色系统理论和插值方法并接合MATLAB编程实现对我国人口发展进行预测,并对预测结果进行分析比较。     

陕西省主体功能区政府绩效评价研究

本文构建了基于熵权分析和灰色关联分析相结合的地方政府绩效评估模型,并通过实证研究论证了该方法的实用性和可操作性较好,为以后政府绩效评价工作提供了一种新的思路。     

目标规划及AHP在企业外包任务分配中的应用

当今社会竞争日益激烈,社会分工逐渐加强,降低成本,专注主业,成为许多企业的重要目标。很多企业开始选择将非核心业务外包给外包供应商。一般情况下,一家企业会同时与多个外包供应商合作。如何选择合适的外包供应商以及如何进行合适的外包供应商任务分配就是企业选择外包业务所要关注的重要问题。     

Reducing Brazilian greenhouse gas emissions: scenario simulations of targets and policies

This paper aims to evaluate the economic impacts of greenhouse gas emission reduction on the Brazilian economy. To this end, we developed an integrated input–output linear programming model for 2009 using the Supply and Use Tables and emissions data of the Brazilian Ministry of Science and Technology and Innovation. We simulated emissions targets for various potential scenarios in which the adopted policy design took account of sectoral composition in terms of emissions and available production technology. The results were directly affected by the high level of livestock emissions, counterbalancing this sector’s economic importance for Brazil. In the short term, sectoral emissions targets associated with taxation policy or emission permits could be developed in order to create private incentives to mitigate emissions. In this sense, the results also show that different sectoral targets may be able to balance environmental benefits with the possible economic losses incurred by such policies.     

Recursive structure and equilibria in games with private monitoring

Summary. In each stage of a repeated game with private monitoring, the players receive payoffs and privately observe signals which depend on the players' actions and the state of world. I show that, contrary to a widely held belief, such games admit a recursive structure. More precisely, I construct a representation of the original sequential problem as a sequence of static games with incomplete information. This establishes the ground for a characterization of strategies and, hence, of behavior in interactive-decision settings where private information is present. Finally, the representation is used to give a recursive characterization of the equilibrium payoff set, by means of a multi-player generalization of dynamic programming. Received: February 11, 2002; revised version: July 22, 2002 RID="*" ID="*" I am very grateful to In-Koo Cho, Larry Epstein, Denis Gromb, Stephen Morris, Paolo Siconolfi, Lones Smith and Max Stinchcombe for several insights and suggestions. A referee's comments helped improving the exposition. Finally, I wish to thank the participants to the seminars at MEDS, NYU, Columbia University, Caltech, UCLA, University of Rochester, University of Texas-Austin, Northwestern Summer Microeconomics Conference 98, Summer in Tel Aviv 98, and NASM98.     

基于灰色优势分析的中国农业现代化水平测度与波动趋势分析

灰色优势分析能在排除主观因素干扰的情况下对各评价指标进行赋权,提升了评价体系的可信度.农业现代化产出指标和投入指标的关联序分别表征了各评价指标在衡量农业现代化发展水平时的代表性强弱.结果显示:1981-2010年中国农业现代化进程已先后走出“高效益、低水平”和“高水平、低效益”的非良性状态,逐步趋向“高效益、高水平”的良性发展.随着资源、环境、人力等因素对农业的约束日渐趋紧,未来中国农业现代化水平的提升不能单纯依靠农业投入产出的规模扩张,必须注重提高农业投入产出的效益水平.     

辽宁省林业产业结构优化研究

林业产业目前存在着结构不合理、产业素质差、科技含量低、发展不充分等问题,难以适应国民经济和社会发展的需要,也制约了林业的健康、持续发展。因此,运用灰色关联度模型对辽宁省林业产业结构进行分析,并提出优化调整方案,具有重要意义。