Accounting for Option–based Compensation: The Economic Cost Approach

The intrinsic value approach amortizes over the life of the option, the difference between the stock price on the date of the grant and the exercise price of the option. The fair market value approach amortizes over the life of the option, the market value of stock options on the date of the grant. These approaches do not reflect the changes in the option–based compensation cost after the grant date. This paper proposes an economic cost approach that not only adjusts for the changes in the value of the options during its life but also records the issuance of the stock at fair market value on the exercise date.     

Stability and Segregation in Group Formation

This paper presents a model of group formation based on the assumption that individuals prefer to associate with people similar to them. It is shown that, in general, if the number of groups that can be formed is bounded, then a stable partition of the society into groups may not exist. (A partition is defined as stable if none of the individuals would prefer be in a different group than the one he is in.) However, if individuals' characteristics are one-dimensional, then a stable partition always exists. We give sufficient conditions for stable partitions to be segregating (in the sense that, for example, low-characteristic individuals are in one group and high-characteristic ones are in another) and Pareto efficient. In addition, we propose a dynamic model of individual myopic behavior describing the evolution of group formation to an eventual stable, segregating, and Pareto efficient partition. Journal of Economic Literature Classification Numbers: C72, H41.     

Symmetry and order in the portfolio allocation problem

Summary. This research studies the role of multivariate distribution structures on random asset returns in determining the optimal allocation vector for an expected utility maximizer. All our conclusions pertain for the set of risk averters. By carefully disturbing symmetry in the distribution of the, possibly covarying, returns, we ascertain the ordinal structure of the optimized allocation vector. Rank order of allocations is also established when a permutation symmetric random vector is mapped into the returns vector through location and scale shifts. It is shown that increased dispersion in the vectors of location and scale parameters benefit, ex-ante, investors as does a decrease in the rank correlation coefficient between the location and scale parameter vectors. Revealed preference comparative static results are identified for the location and scale vectors of asset returns. For most issues addressed, we arrive at much stronger inferences when a safe asset is available. Received: August 8, 2000; revised version: January 8, 2001     

充气天线结构技术概述

简要介绍了充气式可展开空间天线(以下简称充气天线)结构的关键技术,指出了充气天线的最新发展动向。     

军民融合背景下我国上市军工企业结构评价研究

采用“DEA方法”评价我国上市军工企业结构优化度,通过我国各军工产业结构优化效率之间的对比,探究我国军工产业结构现有的问题,进而提出新时期、新常态下,我国军工产业结构升级的对策。最后,就军民融合背景下我国军工企业转型升级问题提出实践性指导。     

辽宁省产业结构与就业结构协调发展研究

产业结构与就业结构的协调发展是促进就业和经济持续稳定增长的必然要求,是考察一国或一地区产业结构调整合理化水平的重要指标。针对辽宁省产业结构与就业结构出现的不协调性问题,利用1978-2007年相关数据,采用结构偏离度、就业吸纳弹性等实证分析方法,得出二元经济体制惯性、资本密集型主导、科技含量低等是其形成的主要原因,最后提出了相应的对策建议。     

退耕还林工程成本补助:性质、结构及有效分担

阐明退耕还林工程的成本构成、补助性质和分担情况;对工程成本资金管理和运作责任主体不明确、补助成本结构设置不尽合理、退耕农户成本总体弥补不足的问题突出、地方政府在退耕还林中实际负担过多成本以及补助期偏短、配套基础建设进展缓慢、培育替代产业难度大等退耕还林工程成本补助管理及成本分担问题进行深入剖析;提出退耕还林工程成本有效分担的原则、财政职责在政府间的合理分配、保证退耕还林工程区地方政府正常工程管理工作运转的资金需要、兼顾效率原则和改进成本补助资金方法等创新退耕还林工程成本分担机制,优化政府间财政措施的建议。     

股权分置改革对价理论与实务研究

股权分置改革的实质是一种强制性的制度变迁。在这一制度变迁过程中,通过对价弥补制度安排对参与方造成的损失并获取良好的整合效果是改革成败的关键所在。对价问题是股权分置改革的核心问题,研究并掌握对价相关理论与实务是保护投资者利益、促进证券市场稳定发展的重要途径,同时也是股权分置改革成败的关键。     

政府主导下的土地流转与产业发展及就业的关联机制?——天津近郊地区农村集体建设用地流转实践与启示

天津近郊的小城镇建设过程中,农村集体建设用地流转虽然是在政府主导下进行的,但当地自身经济发展水平和农民生活方式的改变是政府推动土地流转的基础和前提;政府则通过对土地的整合及重新规划,推动了当地的产业结构调整和产业水平提升,也加快了农民身份的转变,并为失地农民提供了相应的就业机会和社会保障。农村集体土地的流转是地区产业结构升级和农民就业转型的需要,而政府主导的土地流转可以更好地促进当地产业结构的演化升级和农民的就业转型。     

房地产税、市场结构与房价

本文在住房流量模型的基础上,构建了一个购房者和开发商的住房市场局部均衡模型,考察了完全垄断和完全竞争情形下房地产税与房价之间的关系。结果表明,无论何种市场结构,提高房地产税均导致房价下降;住房市场垄断性越强,房价越高,房地产税对房价影响越大。笔者对1996-2008年中国33个大中城市数据的检验发现,市场结构对房价影响大于房地产税。房地产税增长率每增加1%,房价增长率将减少0.03%;勒纳指数每增加1%,房价增长率将增加0.16%。房地产税与市场结构相互作用将使房价上涨,但影响微不足道。因此,对住宅开征房地产税,将对房价上涨有一定限制作用,但不能有效抑制房价上涨,而增强住宅市场竞争性、降低开发商垄断具有显著效果。