Herfindahl Concentration with an Import Fringe and with Supply Constraints

The widely used Herfindahl index of concentration measures market power incorrectly in cases where a core of sellers faces a competitive fringe or where some subset of sellers is supply-constrained. These cases arise, for example, where domestic sellers face a small fringe of imports, or where import supply of any magnitude is limited by natural or artificial constraints. Returning to the theoretical roots of the Herindahl, this paper demonstrates how the index should be modified to deal with such circumstances.     

经济结构与经济增长--基于面板平滑转换模型的实证分析

本文运用面板平滑转换回归模型对我国经济结构与经济增长的关系进行实证分析,分别考察了第二产业结构和第三产业结构对经济增长的资本产出弹性、劳动产出弹性以及规模报酬的影响。实证结果表明,第二产业的比重与资本产出弹性、劳动产出弹性以及规模报酬均成正相关;第三产业的比重与资本产出弹性呈现一种非线性递增关系,而与劳动产出弹性以及规模报酬成非线性递减关系。     

我国第三产业发展与就业增长互动关系研究

通过构建VAR模型对我国第三产业发展与就业增长的关系进行了实证研究。协整分析表明第三产业与就业增长之间存在着长期协同互动关系。VAR模型及脉冲响应函数的动态分析表明我国第三产业发展表现为相互促进的累积过程;劳动力投入是影响第三产业发展的重要因素,就业人数的增长对第三产业发展有巨大的推动作用;第三产业具有很大的就业吸纳空间。最后根据就业吸纳弹性来阐明第三产业发展对劳动力的吸纳能力并提出相应的政策建议。     

江南城乡中年女性生活方式和服装消费的差异研究

通过对江南城乡中年女性生活方式与服装消费的调查,采用SPSS软件对问卷数据进行统计分析,得出江南城市和乡村中年女性个体属性、生活方式、着装意识、服装消费行为的差异,根据分析的结果对城乡中年女性的服装设计、服装生产和服装营销提出建议。     

Success is not enough: The spectacular rise and fall of a strategic alliance between two multinationals

This article analyzes a strategic alliance between two multinational companies from the same geographical region. Originating in the same industrial culture and with technically advanced, complementary products, they formed a strategic alliance for international growth in 1947. Despite significant changes in the market over the years, the companies remained market leaders and icons of a successful alliance until 1988, when the alliance suddenly collapsed. The study describes the alliance process from a long-term perspective using a theoretical framework based on motives, resources, competitive advantage, trust and performance. Although the alliance is no more, it is found to have made a substantial contribution to the collaborating firms with respect to their growth and expansion in the world market. Both partners achieved what they expected from the alliance. They also have developed well as competitive companies thereafter. The sudden end to the collaboration can therefore not be seen as a failure. However, it is argued that the separation process, as the process of alliance formation, needs to be taken seriously, and managers must give sufficient time and effort to ensure that the break-up becomes non-dramatic and less painful.     

结构调整与技术进步对碳排放影响的空间效应分析

对1997～2012年中国分省域碳排放的数据进行详细测算,发现碳排放具有明显的空间相关性。利用空间面板数据模型分析发现,单位国内生产总值（GDP）能耗和能源结构碳强度对碳排放的影响较为突出。通过检验发现建立空间杜宾模型是最优的。结论：进一步加快产业结构优化升级,培育优势创新产业集群,推广清洁技术的利用,改善以煤炭为主不合理的一次能源消费结构,并充分考虑区域间的集聚效应,在碳减排活动中充分加强区域协作。     

The deterministic EOQ and EPQ with partial backordering at a rate that is linearly dependent on the time to delivery

Our original models for the EOQ and EPQ with partial backordering assumed that the backordering rate, β, is a constant. In this paper we extend those models to allow β to increase linearly as the time until delivery decreases. We show how those previous models can be adapted to find the optimal decision variable values for this new assumption and develop, for each model type, a condition that the initial value of β must meet for partial backordering to be optimal.