再分配倾向的决定:对既有文献的考察

本文对再分配倾向决定领域的既有文献进行详尽考察,认为从内在动力角度来理解各种决定因素才是根本,归纳提炼了再分配倾向决定的四大动机:经济利益动机、风险规避动机、公平信念动机和声誉理想动机。再分配倾向决定的四大动机通过不尽相同的理论逻辑机制和多种实证影响因素对人们的再分配倾向产生影响,四大动机的框架为实证研究中的因素筛选提供了有力的工具。对于该领域进一步的研究,本文提出应用实验手段的重要性,并应注意宏观变量对再分配倾向的内生性影响。     

复方坦索罗辛非那雄胺胶囊的含量测定方法研究

目的探讨复方坦索罗辛非那雄胺胶囊的制备和质量控制。方法将非那雄胺和微晶纤维素混合后与溶解有坦索罗辛的乙醇溶液混合制粒装入胶囊中。盐酸坦索罗辛的含量测定采用高效液相色谱法,色谱柱为KromasilC18柱(250mm×4.6mm,5μm),流动相为乙腈-0.2mol.L-1磷酸二氢钾-0.2mol.L-1磷酸盐溶液=5:7:7(v/v),流速为1mL.min-1,柱温为30℃,检测波长225nm。非那雄胺的含量测定也采用高效液相色谱法,色谱柱为WatersC18柱(250mm×4.6mm,5.0μm),流动相为甲醇-水(75:25),流速为1mL.min-1,检测波长220nm。结果结论所用方法简单,易于操作,含量测定方法简便、准确、回收率高,可用于复方坦索罗辛非那雄胺胶囊的质量控制。     

中国工业部门要素分配份额决定因素研究

本文讨论我国工业部门要素分配份额的决定因素问题。在标准的新古典要素分配份额模型中,本文引入Dixit-Stiglitz垄断竞争以及企业目标函数的差异,建立了要素分配份额的决定模型。根据这个理论模型,本文建立了中国工业部门要素分配份额的计量模型,并利用系统GMM方法进行估计。回归结果表明,垄断能力越高,资本收入份额越高,国有和非国有企业的资本收入份额存在明显差异,国有企业的资本收入份额明显低于非国有企业,各类经济性质企业的资本收入份额从高到低依次为外商投资企业、港澳台企业、法人投资企业、集体企业、私有企业和国有企业。传统新古典分配模型考虑的技术因素,包括要素投入比的变化和技术进步,对要素分配份额的变化没有显著影响,表明我国工业部门要素替代弹性为1,因而劳动与资本相对价格的变化对要素分配份额没有显著影响。我们的结论是,工业部门要素分配份额变化的主要原因是产品市场垄断增加和国有部门改制引起的劳动力市场环境改变。     

鄱阳湖周边经济区生态畜牧业空间格局与发展模式

本文采用区域生态系统发展战略分析法和以空间格局优化为核心的景观格局规划模式,在对鄱阳湖周边经济区畜牧业资源调查基础上,进行全面客观、深入细致的综合评价;制定系统完善、科学实用的草滩湿地畜牧区等5个区功能分区方案,确定区域畜牧业发展重点和方向,以及解决途径与措施。     

区域土地利用规划布局研究进展

该文对国内外区域土地利用规划布局理论与方法的研究现状进行了总结,分别对土地利用规划布局的理论体系、土地利用规划布局的模式、方法进行了分析,进而阐述了区域土地利用规划布局研究存在的不足,提出了以复杂性理论、复杂适应系统理论为指导的复杂空间决策方法,为土地利用空间决策开辟了新思路。     

What kind of marketing distribution mix can maximize revenues: The wholesaler travel agencies' perspective?

This study attempts to identify the variety of marketing channel efficiencies for marketing activities and sets up an optimal marketing distribution mix when using different distribution channels for wholesaler travel agencies. This research examines 12 large-scale travel agencies in Taiwan and offers seven direct and indirect distribution channels in order to establish an optimal marketing distribution mix and identifies the different forms of distribution involved. We also implement the analytic hierarchy process (AHP) to prioritize the seven main marketing distribution channels of travel agency: websites, cable TV, radios, professional magazines, retailer travel agencies, strategic alliances, and newspapers. Five criteria are categorized as a distribution channel selection: overall cost of the channel, target audience respondent rate, impression rates, transactional capabilities, and gross profit of the channel. The results show that Taiwan's wholesaler travel agencies adopt the retailer travel agency as their highest priority of channel selection, while travel agency websites hold it as their second priority. Transactional capabilities, gross profit of the channel, and overall cost of the channel are the top three favorable choices among the five criteria considered. This study proposes an innovative hierarchy model of marketing distribution mix to a wholesaler travel agency practitioner when making decisions in order to effectively exploit the different distribution mix, to maximize performances and revenues, and to overcome the traditional experience based on the shortcomings of the selection.     

中国城镇养老保险制度改革的收入分配效应

在公共养老保险制度下,可以通过调整养老保险的缴费率或养老金计发办法来影响参保人一生中的养老金纯受益,从而实现代际间和代际内的收入再分配。本文利用中国国家统计局2002年的城市住户调查数据,分别估计城镇参保职工在1997年养老保险制度和2005年最新养老保险制度下的终生养老金纯受益,并以此从代际间和代际内的角度对中国养老保险制度改革的收入分配效应进行定量分析。分析表明:在1997年的改革方案下改革前的养老保险制度中存在的逆向收入转移效果得到改善;但在2005年改革方案下,2002年时40岁以上的群体中存在较明显的逆向收入转移倾向。另一方面,从代际分配来看,1997年改革方案的代际不平衡大于2005年改革方案;在2005年改革方案下各代人的养老金纯受益都有所提高,但这是以养老保险制度的缴费率和养老金计发办法不变,养老财政收支能维持平衡以及参保人在整个工作期间按规定缴费为前提的。     

Ruin Problems for Phase-Type(2) Risk Processes

In this paper we consider a risk process in which claim inter-arrival times have a phase-type(2) distribution, a distribution with a density satisfying a second order linear differential equation. We consider some ruin related problems. In particular, we consider the compound geometric representation of the infinite time survival probability, as well as the (defective) distributions of the surplus immediately prior to ruin and of the deficit at ruin. We also consider explicit solutions for the infinite time ruin probability in the case where the individual claim amount distribution is phase-type.     

A barrier options approach to modeling project failure: The case of hydrogen fuel infrastructure

Hydrogen fuel cell vehicles have the potential to contribute to a sustainable transport system with zero tailpipe emissions. This requires the construction of a network of fuel stations, a long-term, expensive and highly uncertain investment. We contribute to the literature by including a knock-out barrier option in an n-fold compound real option model to take account of immediate project failure in a multi-stage sequential investment project. Our model allows to explicitly incorporate the default possibility of large-scale energy infrastructure projects. In our case study of hydrogen infrastructure development, we find that even for the least conservative valuation method no profitable business case can be made for the development of hydrogen as a sustainable transportation mode. However, we do provide some suggestive scenarios that plausible tax schedules can be designed to overcome the starting problems for hydrogen infrastructure development.     

Continuity Estimates for Ruin Probabilities

A method of continuity analysis of ruin probabilities with respect to variation of parameters governing risk processes is proposed. It is based on the representation of the ruin probability as the stationary probability of a reversed process. We apply Kartashov's technique designed for continuity analysis of stationary distributions of general Markov chains in order to obtain desired continuity estimates. The method is illustrated by the Sparre Andersen and Markov modulated risk models.