新农保对农民最优储蓄的挤出效应及其影响因素分析——基于两期代际扩展模型的应用

摘要：新型农村养老保险制度的实施和持续发展,不仅具有维护农村居民社会养老保险权益公平性的社会作用,还能起到刺激农村消费需求增加从而促进农村经济发展的经济作用。通过两期代际扩展型的应用,证明了新农保的实施对个体农户终身效用最大化下的最优储蓄存在挤出效应,其主要影响因素有：缴费年限、缴费比率、养老保险账户的增值保值能力和收入替代率等,并以此为基础,提出了完善新农保制度、促进其可持续发展的政策建议。     

银行保兑仓业务和担保授信创新与应用

银行保兑仓业务和担保授信在当今市场经济中发挥着重要作用,本研究的目的在于：弄清其概念与内涵,揭示其基本要求、操作方式与流程;并提出和论证在传统保兑仓融资过程中信用担保介入的操作模式与应用问题。     

Roles of extension and ethno-religious networks in acceptance of resource-conserving agriculture among Ethiopian farmers

This article analyses roles of social and extension networks in adoption of resource-conserving practices among Ethiopian farmers. We gathered data from 297 randomly sampled households on their agricultural practices, social networks, access to the extension, and geographical location. After examining general determinants of practising resource-conserving agriculture, we employ a two-stage regression with full-maximum likelihood correction for selection bias to establish the roles of general social networks and external professionals in acceptance of conservation techniques. In accordance with previous research, probit regression in the first stage shows that the access to extension increases with farmers’ wealth and the size of their personal networks, and decreases with the distance of their households from village centres. However, after accounting for this unequal access to extension, the second-stage linear regression shows that regardless of education, wealth or geographical location, those whose religion and ethnicity match with their agent, report learning more about conservation from extension sources. Furthermore, farmers who are socially well connected within the community tend to be less receptive to agents’ recommendations regarding resource conservation. Dissemination policy of conservation agriculture should consider the ethnic and religious affinity between farmers and their extension agents. It also needs to pay more attention to socially and geographically isolated individuals.     

我国区域经济波动的关联性分析

依据所进行的有关计量分析,在研究我国经济总量波动的区域特征以及区域经济波动的关联性问题时,不难得出如下几个方面的基本结论：区域间经济波动的内在关联性增强,但同步性却是减弱的;20世纪90年代前后国内中西部地区与东部地区经济波动的先行地位有着明显的轮替变化;与此同时,全国和各区域经济波动的周期长度延长,波动强度显著下降,且周期扩张动力显著增强。此外,各区域经济波动形态呈同化趋势,区域间周期扩张动力差异的扩大趋势也十分明显。     

奢侈品品牌社群对品牌延伸评价的影响研究

国内目前为止几乎没有将品牌社群与品牌延伸领域相结合的研究文章。本文分别从这2个领域中选择了既有很强理论价值又是品牌企业十分看重的品牌社群认同度、品牌社群参与度和品牌延伸评价三个潜变量,通过对来自汽车行业某奢侈品品牌社群的社群成员样本进行基于结构方程模型的数据分析,探讨了品牌社群认同度和参与度对品牌延伸评价的作用机理。研究结果证实了研究假设：品牌社群认同度对品牌延伸评价有正向作用,并且通过品牌社群参与度这个中介变量对品牌延伸评价有间接的正向影响。这个结论不仅为品牌社群作用的机理理论提供了较为有效的补充,还为奢侈品品牌企业建设、培育品牌社群和发展延伸品牌提供了较为有力的指导。     

Recycling and extending product-life: an evolutionary modelling

This paper presents a model-based analysis of firms’ economic incentives to extend product life and market recyclable products. We address this problem by developing an evolutionary simulation model to describe the behavior of business firms as interacting with consumers and recyclers. Market structure, business firms’ R&D strategies and consumers’ preferences are found to have an important influence here. The simulation results show that improvement in recycling is necessary but not sufficient to solve the issue of increase in waste. Recycling will need to be backed up with an extension in product-life to face such an unwanted increase. Adopting such a strategy could be positive for firms and for the environment because it could lead to high economic performance, both in terms of profits and market share, and to high environmental performance, both in terms of product recyclability and product lifetime. Our results suggest introducing regulation policies aimed at encouraging firms to invest in developing green products, i.e. those which are easily recyclable and which have a long lifetime, and getting consumers to buy them. It would also seem crucial to lend support to innovation outlay for such firms and to favor their seeking to improve product performance.

Conditional ordering extensions

We produce a solution to the problem of extending a quasiordering conditional on a finite list of ex-ante comparisons between pairs. This constitutes yet another extension of the classical Szpilrajn’s theorem. Some examples of use of our result follow.     

城市金融吸引力评价系统构建

城市金融吸引力,是一个城市对欲进行区域突破的银行的吸引力。其评价系统主要包括指标体系和研究方法。指标体系可从多维度考察,分成核心指标体系、基本指标体系和扩展指标体系等。研究方法主要分成三类,即指标处理方法、指标权数赋予方法和综合评价方法。运用阀值法进行指标处理,并用修正德尔菲法进行指标权数赋予。在此基础上,可构建综合评价模型,对城市金融吸引力进行等级划分,衡量城市的金融可拓度,为银行决策提供信息。     

外贸对长三角地区经济增长的影响——基于1986-2007年数据的实证分析

本文利用长三角地区1986-2007年的统计数据,采用出口扩展型生产函数模型,实证分析了进出口贸易对长三角地区经济增长的影响.研究结果表明,长三角地区进出口贸易对经济增长有显著的促进作用,且产品出口对经济增长的产出弹性大于进口和进出口总额的产出弹性.     

论我国中小企业的技术创新战略

高的盈利率与高的市场份额并没有必然的联系 ,然而盲从市场份额的危害相当严重 ,企业应当走出认识的误区 ,不要一味迷信市场份额。