Economic Potential of Biomass Based Fuels for Greenhouse Gas Emission Mitigation

Use of biofuels diminishes fossil fuelcombustion thereby also reducing net greenhousegas emissions. However, subsidies are neededto make agricultural biofuel productioneconomically feasible. To explore the economicpotential of biofuels in a greenhouse gasmitigation market, we incorporate data onproduction and biofuel processing for thedesignated energy crops switchgrass, hybridpoplar, and willow in an U.S. AgriculturalSector Model along with data on traditionalcrop-livestock production and processing, andafforestation of cropland. Net emissioncoefficients on all included agriculturalpractices are estimated through crop growthsimulation models or taken from the literature. Potential emission mitigation policies ormarkets are simulated via hypothetical carbonprices. At each carbon price level, theAgricultural Sector Model computes the newmarket equilibrium, revealing agriculturalcommodity prices, regionally specificproduction, input use, and welfare levels,environmental impacts, and adoption ofalternative management practices such asbiofuel production. Results indicate no rolefor biofuels below carbon prices of $40 perton of carbon equivalent. At these incentivelevels, emission reductions via reduced soiltillage and afforestation are more costefficient. For carbon prices above $70,biofuels dominate all other agriculturalmitigation strategies.     

Feminist Ecological Economics and Sustainability

Synopsis New developments in feminist ecological economics and ecofeminist economics are contributing to the search for theories and policy approaches to move economies toward sustainability. This paper summarizes work by ecofeminists and feminist ecological economists which is relevant to the sustainability challenge and its implications for the discipline of economics. Both democracy and lower material throughputs are generally seen as basic principles of economic sustainability. Feminist theorists and feminist ecological economists offer many important insights into the conundrum of how to make a democratic and equity-enhancing transition to an economy based on less material throughput. These flow from feminist research on unpaid work and caring labor, provisioning, development, valuation, social reproduction, non-monetized exchange relationships, local economies, redistribution, citizenship, equity-enhancing political institutions, and labor time, as well as creative modeling approaches and activism-based theorizing.      

政府机构节能内涵、机理与政策措施建议

政府机构节能是全社会降低能源消耗、提高能源效率的关键环节。文章系统地分析了政府机构节能的内涵、机理,探讨了政府机构节能政策的适应性,有针对性地提出了我国政府机构节能的管理运行框架体系和政策措施建议。     

服务主导逻辑视角的互联网医疗服务产品化实现机制研究

新兴互联网医疗企业如何摆脱"盈利困局"?本研究以广东医特为案例研究对象,基于服务主导逻辑视角,揭示并构建了互联网医疗服务产品化实现机制模型。实现机制模型包括服务能力可视化、服务流程标准化、服务反馈客观化三个阶段,明确了各个阶段的背景诱因、形成过程和最终效果。研究结论有助于现有服务产品化理论和服务主导逻辑的演化研究,对互联网医疗企业有一定的现实启示作用。     

我国服务业增加值的核算问题

本文集中讨论我国服务业增加值估算中存在的问题。由于历史原因和服务业本身的一些特点 ,我国现价服务业增加值被严重地低估了 ,服务业增长率计算也可能存在着偏差。对服务业增加值的以往研究均受到基础数据的限制而未能根本地解决这些问题。服务业统计核算的缺陷严重地阻碍着经济分析和经济决策。因此 ,改善我国服务业统计核算是当务之急。从长远的角度来说 ,服务业增加值核算的改善在很大程度上取决于统计调查的完善。但是 ,在现有的条件下 ,仍然有很大的改善余地。     

竞争性行业管理体制改革的方向和重点

竞争性行业是指所有不具有自然垄断性质的行业.虽然我国竞争性行业管理体制改革已取得了重大进展,但还存在政企不分、职能转变不到位、部门垄断、行业进出通道不畅、行业管理法规不健全等问题.改革的方向和重点是:推进政企分开、政资分开、政监分开和政社分开,理顺行业管理体系,打破部门垄断和地方保护,疏通行业进入和退出通道,完善行业管理法规等.     

Existence of a competitive equilibrium in a one sector growth model with heterogeneous agents and irreversible investment

Summary. We prove existence of a competitive equilibrium in a version of a Ramsey (one sector) model in which agents are heterogeneous and gross investment is constrained to be non negative. We do so by converting the infinite-dimensional fixed point problem stated in terms of prices and commodities into a finite-dimensional Negishi problem involving individual weights in a social value function. This method allows us to obtain detailed results concerning the properties of competitive equilibria. Because of the simplicity of the techniques utilized our approach is amenable to be adapted by practitioners in analogous problems often studied in macroeconomics. Received: September 13, 2001; revised version: December 9, 2002 RID="*" ID="*" We are grateful to Tapan Mitra for pointing out errors as well as making very valuable suggestions. Thanks are due to Raouf Boucekkine and Jorge Duran for additional helpful discussions. We also thank an anonymous referee for his/her helpful comments. The second author acknowledges the financial support of the Belgian Ministry of Scientific Research (Grant ARC 99/04-235 “Growth and incentive design”) and of the Belgian Federal Goverment (Grant PAI P5/10, “Equilibrium theory and optimization for public policy and industry regulation”). Correspondence to: C. Le Van     

实际汇率、工资和就业--对中国贸易部门和非贸易部门的实证研究

在同时考虑贸易部门和非贸易部门的情况下,实际汇率贬值会增加贸易部门就业,但会减少非贸易部门就业,对实际工资的影响则是不确定的.按照理论分析的结果,文章对人民币实际汇率和中国两部门实际工资及就业的关系进行协整检验,结果发现:人民币实际汇率贬值显著增加贸易部门就业,但非贸易部门就业对实际汇率变动不敏感,而两部门的实际工资和实际汇率之间则都没有协整关系存在.进一步检验发现实际汇率变动对就业在贸易和非贸易部门之间的结构也没有影响.总的结论认为,即使考虑到非贸易部门,人民币实际汇率升值对整个就业也是不利的,而贬值有利于整个就业.     

公共产品供给主体及边界确定的交易费用经济学分析——兼论我国公共产品供给过程中交易费用的计量

将新制度经济学中交易费用理论引入公共产品供给分析,给出了供给公共产品的主体确定的理论模型,并在威廉姆森范式扩展的基础上得出了各个主体的边界,认为最优公共产品供给方式的选择和主体边界的确定,取决于公共产品供给过程中发生的交易费用.测算了中国公私部门供给公共产品过程中存在的交易费用,发现就我国公共产品的供给而言,在一定的条件下将公共产品供给由政府部门交给私人部门与第三部门可以节约交易费用,提高公共产品供给的效率.     

中国能源安全现状及其可持续发展

作为世界上第三大能源消费进口国,中国的能源安全问题和能源安全战略的实施是我国保持持续平稳发展所必须认真面对的重要课题和基本任务。本文从能源安全的基本内涵、发展历程、不同类型国家的能源安全战略对比分析以及中国能源安全现实的剖析,以发展的眼光分别在战略上和战术上提出了几大对策,从而使中国能源安全实现可持续发展。