物流公共信息平台的发展趋势及建议

由于近年来,不断发展的经济社会对物流行业提出的要求越来越严峻,国家对物流行业的支持力度的增大,各地物流公共信息平台如雨后春笋般拔地而起,然而,物流公共信息平台的未来在哪里?如何让物流公共信息平台能在实际的物流业务中落地,成为我们必须思考的急迫问题,     

Should the Good and the Selfish be Taxed Differently?*

In this paper, we consider an environment where individual actions have externalities and two types of agents exist: agents with social preferences (the good) and selfish agents. Selfish agents have pay‐off functions that do not take into account social welfare. The pay‐off of an agent is a linear combination of social welfare and the pay‐off of a selfish agent. We demonstrate that the corrective tax rates that maximize social welfare do not depend on the degree of social preferences. Hence, the good and the selfish should not be taxed differently.     

油料装备产品族分类系统研究

油料装备分类是进行产品族分析和管理的基础,通过分析产品族中不同产品结构模块相似性评价指标,用集合与属性之间的关联关系,实现集合与属性相似性评估之间的映射,通过建立各相关属性的相似度矩阵,获取了产品综合相似度评价矩阵,通过聚类分析获得不同阈值下的分类结果,最后,对油料装备进行实例分析。     

创业团队研究动态探讨

创业团队日益普遍的出现和存在,其创业绩效要好于个体创业的创业绩效,创业团队的组成是以情感的纽带为基础、为起始,以专长的互补为辅、为继。创业团队是有领导的。     

影响江西省存贷款规模因素的实证分析

存贷款发展规模趋势对我们展望和规划金融业的“十一五”十分重要。本文运用经济计量软件Eviews4.0,收集筛选了江西省1984-2004年相关高频经济金融数据,经过平稳性检验、因果关系检验、协整检验,建立了影响存贷款规模因素的数理实证模型,进行了实证分析,给出了具体翔实的答案。     

石油储量价值评价中价格级差分级模型的设计

从资源所有者的角度看，石油储量价值由该储量的价格级差和成本级差构成。针对石油储量的价值评价工作，分析并确定了影响石油资源价值的价格级差因素及其次因子的构成，进而就这些因子形成了价格级差分级的模型。     

谈计量标准设备期间核查的实施

为了保持计量标准设备检定、校准状态的良好可信度，应该实施期间核查。对期间核查条款要求、实施对象与优越性以及如何实施及纠正措施作了介绍和讨论．重点介绍了应用统计核查的方法、验证测量设备的可靠性。     

农发行信贷资产隐性风险问题分析与防范对策

本针对目前农发行信贷资产管理过程中存在的隐性风险问题进行重点分析，并结合分析要点，提出规避和防范信贷资产风险的措施和建议，对强化收购资金封闭管理有一定的指导意义。     

Portfolio Returns,Market Volatility,and Seasonality

This paper examines three important issues related to the relationship between stock returns and volatility. First, are Duffee's (1995) findings of the relationship between individual stock returns and volatility valid at the portfolio level? Second, is there a seasonality of the market return volatility? Lastly, do size portfolio returns react symmetrically to the market volatility during business cycles? We find that the market volatility exhibits strong autocorrelation and small size portfolio returns exhibit seasonality. However, this phenomenon is not present in large size portfolios. For the entire sample period of 1962–1995, the highest average monthly volatility occurred in October, followed by November, and then January. Examining the two sub-sample periods, we find that the average market volatility increases by 15.4% in the second sample period of 1980–1995 compared to the first sample period of 1962–1979. During the contraction period, the average market volatility is 60.9% higher than that during the expansion period. Using a binary regression model, we find that size portfolio returns react asymmetrically with the market volatility during business cycles. This paper documents a strongly negative contemporaneous relationship between the size portfolio returns and the market volatility that is consistent with the previous findings at the aggregate level, but is inconsistent with the findings at the individual firm level. In contrast with the previous findings, however, we find an ambiguous relationship between the percentage change in the market volatility and the contemporaneous stock portfolio returns. This ambiguity is attributed to strongly negative contemporaneous and one-month ahead relationships between the market volatility and portfolio returns.

     

英美票据市场比较和对我国票据市场发展的思考

2000年11月9日,中国工商银行票据营业部在上海开业,这标志着我国首家票据专营机构的诞生,它的建立翻开了我国银行票据业务发展的崭新一页.作为货币市场的一个重要组成部分,我国票据市场的发展才刚刚起步,与之相比较,英、美等发达资本主义国家的票据市场经过长时间不断发展完善,如今已是相当成熟了.尤其是英国,早在十八世纪,英国银行之间就已经开展票据经营业务了.当今英美等国发达完善的票据市场主要归功于战后的蓬勃发展,并在此过程中形成了两种各具特点的票据市场制度,英美正是这两种不同制度的典型代表.下面我们就英美两国的票据市场作一分析和比较,然后再结合中国票据市场的发展问题作进一步探讨.