Preservation and exogenous uncertain future preferences

Summary. We extend the Beltratti, Chichilnisky and Heal's (1993) and (1998) continuous-time stochastic dynamic framework to analyze the optimal depletion of an asset whose consumption is irreversible, in the face of uncertainty about future preferences. Their model is rather general and so the results are general qualitative theorems. We show that in some interesting cases it is possible to solve their model analytically. The cases involve constant elasticity utility functions and the assumption of a Poisson process for the evolution of preferences. Received: September 13, 1999; revised version: November 23, 1999     

加强成本管理提高企业竞争力

文章阐述了企业成本管理的变革情况,并提出了提高企业竞争力的有效成本管理方法.     

Traders' Bidding Strategies on European Grain Export Refunds: An Analysis with Affiliated Signals

Using a multivariate distribution of traders' information with correlations, we specify the traders' bidding strategies on tenders of European soft wheat intervention stocks. We show that correlations may have opposing effects on the traders' bidding strategy, depending on their valuation of the grain. This structural approach allows us to estimate the traders' strategies using generalized method of moments procedures.     

企业集团上市经营研究

上市经营是企业集团壮大实力的重要途径。但由于我国企业集团和证券市场的特殊性 ,企业集团上市经营面临着困难和问题。针对这些问题 ,文章提出了促进我国企业集团上市经营发展的几点建议。     

市场经济的伦理缺陷研究

市场经济的伦理缺陷:首先,表现在市场经济基本理念与传统道德价值与原则的根本冲突;其次,表现在市场经济运行过程对经济原则的片面坚持与对伦理价值的顽固排斥与否定。克服市场经济伦理缺陷的根本办法在于重新审视经济理性的合理性,检讨经济发展的终极意义,使市场经济以及经济理性回复到在伦理规则指引下为人类主体性生存服务的合理轨道上来。     

TRADE LIBERALIZATION AND GROWTH: Evidence from Mexican Cities

Applying the most recent methodology for explaining economic growth differences across countries (Barro, 1997), education, learning by doing, infrastructure, and knowledge spillovers due to specialization have been considered relevant in explaining productivity growth differences in Mexican urban manufacturing (de León, 1999). In this article, I evaluated whether there is a significant change in the relevance of these variables under trade liberalization. In particular, I evaluated the hypothesis that trade liberalization would promote productivity growth in the northern cities as result of the dynamic effect of trade given that these cities are close to the new central market for Mexican manufacturing and the loss of relevance in the previous accumulated growth factors (Livas and Krugman, 1992; Hanson, 1994). In contrast to that hypothesis, I observed that urban manufacturing close to the United States did not show a better performance than the rest of the cities as expected and that accumulated growth factors, such as education, learning by doing, and infrastructure are still relevant in explaining productivity growth across urban manufacturing in Mexico.     

Controlling the Urban Fabric: The Complex Game of Distance and Proximity in European Upper‐Middle‐Class Residential Strategies

This article presents an open discussion of the processes of urban secession and gentrification in contemporary European cities, arguing that intergroup social dynamics in urban spaces are generally more complex than either extreme mutual avoidance or the colonization of neighbourhoods by the wealthiest groups. We analyse the residential strategies of urban upper‐middle class managers in various European metropolitan areas through in‐depth semi‐structured interviews to argue that these groups develop complex strategies of proximity and distance in relation to other social groups. The development of these ‘partial exit’ strategies takes place through specific combinations of practices that allow groups to select the dimensions they are willing to share with other social groups, and those in which they prefer a more segregated social environment for themselves and their families. The responses of our interviewees were consistently more nuanced and complex than suggested by a simplistic theory about their drive to withdraw from society, forcing us to develop more sophisticated conceptual frameworks to account for the growing prevalence of multi‐layered identities and spheres of reference and solidarity, specific combinations of elective segregation and local involvement, and more active patterns of mobility combined with local embeddedness.     

我国国际资本流入结构的变化:2001—2008

我国加入世界贸易组织以来，流入我国的国际资本结构发生了较大的变化。从资本数量结构来看，资本总量逐年增加，外商直接投资比重下降，间接投资的比重上升；从资本期限结构来说，短期资本总量超过长期资本总量，中长期债务余额比较稳定，而短期债务增速较快，贸易信贷比重逐年增加；国际资本主要来源地没有大的变化；国际资本流入的行业结构中，虽制造业仍占据较大的比重，但服务业所吸收的外资却快速增长，占比越来越大。     

都市圈快速交通走廊的BRT问题研究

世界众多大城市的发展经验表明：城市的交通模式、交通结构随着城市的快速发展必然需要进行相应的调整，而这种调整可能是主动的，也往往可能是被迫的。近年来，郑州的发展有目共睹，突出的表现在经济增长、居民生活水平提高、城市设施建设和城市空间的拓展上。事实上，郑州已经开始承受城市快速发展给交通带来的阵痛，而许多隐患亦可能在不久的将来暴露出来。同时，人们逐渐意识到单一的以道路设施建设为导向的规划理念已无法适应大都市的进一步发展，而以交通模式指引交通设施建设是城市交通发展的必经之路。     

习惯性违章行为的调查与对策研究

小漏洞存在大隐患,习惯性违章都是出在一些细节上的问题,从而导致事故的发生。习惯性违章为何屡禁不止,本文通过对操作员工的习惯性违章行为的调查,研究分析在习惯性违章行为发生时员工的心理状态等因素,从理论的角度阐述习惯性违章的特点和根源,提出预防习惯性违章的措施和对策,预防事故的发生。