城乡结合部用地矛盾成因分析--以北京市为例

特殊的土地利用和管理特点使得城乡结合部用地矛盾尤为凸现.人口、城市发展、集体经济发展是造成土地供求紧张的直接原因,但是管理制度的不健全则是导致和加剧矛盾激化的深层次原因.在对北京市城乡结合部土地利用与房地产市场调查的基础上,对北京市城乡结合部的用地矛盾进行分析,并从深层次揭示问题的根源和变化规律.     

On Sraffa's Standard commodity: is its price invariant with respect to changes in income distribution?

In his 1960 book, Sraffa suggested using a composite commodity,which he called the ‘Standard commodity’, to solveRicardo's search for an invariable measure of value, i.e., astandard capable of isolating the price movements of any othercommodity induced by changes in income distribution. The absencein Sraffa's book of an explicit proof of the invariance propertyof this standard gave rise to many misunderstandings about itsmeaning and its role as an invariable measure of value. In orderto clear up these questions, Bellino (On Sraffa's Standard commodity,Cambridge Journal of Economics, vol. 28, 121–32, 2004)has proposed a ‘proper’ definition of an ‘invariablemeasure of value’, showing that Sraffa's Standard commoditydoes fulfil the requirements of this definition. He claims thatthe fulfilment of this property (but not the constancy of its‘nominal’ price) qualifies the Standard commodityas an invariable measure of value. In this paper, a proof ofthe invariance of the price of the Standard commodity with respectto changes in income distribution is given, and the equivalenceof this property with Bellino's definition of invariance isshown.     

强化处置闲置地

闲置地是当前土地资源利用和管理中值得关注的重要问题。闲置地弊端甚多，严重地威胁了子孙后代的生存和社会经济的可持续发展。闲置地本质上是二元土地制度的产物，也是投机因素作祟的结果。强化闲置地的处置须从改革土地制度、规范地方政府行为、无偿收回闲置地、健全政策法规等多方面努力。     

Stock Price and Volume Effects Associated with Compositional Changes in European Stock Indices

This paper provides further evidence of price and volume effects associated with index compositional changes by analysing the inclusions (exclusions) from the French CAC40 and SBF120 indices, as well as the FTSE100. I find evidence supporting the price pressure hypothesis associated with index fund rebalancing, but weak or no evidence for the imperfect substitution, liquidity and information hypotheses. The results improve on recent evidence from the S&P500 index. The evidence for the FTSE100 additions shows, in particular, that markets learn about an imminent inclusion and incorporate this information into prices, even before the announcement date.     

Duration and the price behavior of fixed-rate level payment mortgages: An analytical investigation

In this research we use a continuous payment formula for duration to examine the price behavior of a fixed-rate level payment mortgage. In the case where the mortgage is held to maturity, duration increases monotonically as term-to-maturity increases, regardless of changes in the market rate of interest. In the case where the mortgage is prepaid prior to maturity, there exists a unique market interest rate below which duration is a monotonically increasing function of time of prepayment, but above which duration has a global maximum at some time of prepayment prior to the term-to-maturity.     

土地出让收入的区域差异分析

近年来我国土地出让收入的区域差异明显,主要原因在于地区间经济发展水平不平衡、土地出让价格差异较大以及对土地供应缺乏有效控制。土地出让收入的区域差异加剧了区域间财政收入能力的横向失衡,也加大了中央政府均衡区域间财政能力的难度,应采取相应的政策措施加以解决。     

影子价格两种定义的统一性及其经济学含义

通过应用库恩-塔克定理,本文论证了线性规划对偶解和一般数学规划的拉格朗日乘子这两种影子价格定义的统一性。由于非线性规划比线性规划更具有普遍性,本文的结论为深入讨论影子价格的经济学意义提供了极大方便。完全竞争是影子价格等于机会成本和市场价格的充分条件。但在不完全竞争条件下,影子价格一般不等于机会成本和市场价格,也不代表资源的最优配置价格,它反映的只是企业的资源利用效率。     

公允价值计量模式研究

财务会计的核心问题之一是会计计量问题。从国际财务会计的发展动向看,由于对金融工具、特别是衍生工具的计量需要,公允价值计量模式备受关注。我国也高度关注公允价值理论和实务的发展,财政部颁布的新会计准则中,已将公允价值作为计量属性之一。但应用中出现的问题和阻力使公允价值计量成为财务会计的难题之一,本文对此进行了探讨。     

Triple jump about urban land potential release in China

Recent two decades, the great changes take place in China, especially in land use area. After the marketization, the urban land potential of China releases gradually. Three models in this paper show the three stages of reforming land use system. This paper will give a clear picture of urban land use in China that spans nearly thirty years.