软件限时开发方法的研究与应用

限时开发是快速应用开发的最佳实践之一。文章介绍了限时开发的基本概念和优点以及适用的项目范围,通过一个进销存软件的开发实例说明如何成功地应用限时开发方法。     

房地产开发项目投资组合的均值——信息熵模型

以方差作为风险度量指标存在着计算复杂、计算结果不稳定等缺陷,本文并将信息熵度量风险的方法引入房地产开发项目投资组合中,建立了房地产投资组合的均值-信息熵模型。实例证明,该模型计算简单,具有较强的有效性和实用性。     

Age-specific dynamic labor demand and human capital investment

To study the optimal age-specific labor demand and human capital investment at the firm level we extend the standard dynamic labor demand model by introducing ‘age’ as a second dynamic variable and distinguish between two types of workers: ‘low skilled’ and ‘high skilled’. Applying an age-structured optimal control model we derive qualitative features of the optimal age-specific hiring and training effort. For the case of a linear revenue and production function we prove that firms do not anticipate changes in adjustment costs in their optimal decisions. This result no longer holds if a nonlinear revenue or production function is considered.     

The Dynamics of Capital Structure in Transition Economies

This paper uses a dynamic unrestricted capital structure model to examine the determinants of the private companies' target financial leverage and the speed of adjustment to it in two transition economies, the Czech Republic and Bulgaria. We explicitly model the adjustment of companies' leverage to a target leverage, and this target leverage is itself explained by a set of factors. The panel data methodology combines cross-section and time-series information. The results indicate that the Bulgarian corporate credit markets were less supply -constrained than those of the Czech Republic during the period under investigation. Bulgariancompanies adjusted much faster to the target leverage than Czech firms. The speed ofadjustment related positively to the distance between target and observed ratio for Bulgarian companies while the relationship was neutral for Czech companies. The conservative policies of Czech banks and the exposure control were likely responsible for the slower adjustment among the larger companies while the opposite were true for Bulgarian banks and companies.     

虚拟物流--第三方物流企业未来发展方向

虚拟物流是第三方物流企业的未来发展方向.本文介绍了我国第三方物流企业的现状、论述了虚拟物流的概念、分析了我国第三方物流采取虚拟经营的优势.     

动态项目型新产品开发组织模式研究

产品开发组织是新产品开发系统的组织保证。根据多产品多层次并行的产品开发过程,讨论建立了动态项目型新产品开发组织。为了顺利实现产品开发,在产品层、子阶段层和设计层并行;在动态项目型产品开发组织中,又讨论了组建产品策划团队、产品开发管理团队和产品开发技术团队等内容,以确保相应的新产品开发战略的实现。     

企业生态群落和“大”动态能力战略观

战略管理的核心作用是把环境的机会和企业的力量相匹配，同时保护企业的弱点使之不受环境的威胁。目前的企业能力理论过多地把其战略目光放在了企业内部。然而，竞争日益全球化的今天，企业的竞争，其实质不再仅仅是单纯意义上的企业能力与企业能力的较量，而是企业所属的生态群落能力间的较量。为此，本文从全球化竞争的视角出发，阐释了企业生态群落中政府动态能力、企业动态能力、金融制度动态能力、教育制度动态能力的内涵，探讨了政府动态能力、企业动态能力、金融制度动态能力、教育制度动态能力间互动作用机理，在此基础上提出了“大”动态能力企业战略观。     

租车行业收益管理研究现状及前景展望

本文基于租车行业收益管理的特点,从需求预测、超订、存量控制和价格策略四个方面对租车收益管理的研究现状进行分析,展望了收益管理在租车行业的研究前景.     

OFDI逆向技术溢出能够改善中国能源效率吗

从理论和实证两个层面考察了OFDI逆向技术溢出对中国能源效率的影响。采用2002—2016年中国30个(非全部)省(直辖市、自治区)的面板数据，运用DEA博弈交叉效率模型测算了碳排放约束下各省(直辖市、自治区)能源效率的现状。选取技术进步、产业结构等7类控制变量，采用动态面板GMM方法分析了OFDI逆向技术溢出与区域能源效率之间的动态关系。研究表明：OFDI逆向技术溢出对区域能源效率具有显著的正向促进作用，其每增加1%，将带来能源效率0.0613%的提升；在其他控制变量中，技术进步、产业结构优化、能源结构优化、外商直接投资对能源效率具有正向促进作用，城镇化水平对能源效率具有负向抑制作用，人力资本水平与对外开放度对能源效率具有正向促进作用，但不显著。以上发现为“一带一路”背景下区域节能减排政策的制定提供了经验证据。     

“Itô's Lemma” and the Bellman Equation for Poisson Processes: An Applied View

Using the Hamilton-Jacobi-Bellman equation, we derive both a Keynes-Ramsey rule and a closed form solution for an optimal consumption-investment problem with labor income. The utility function is unbounded and uncertainty stems from a Poisson process. Our results can be derived because of the proofs presented in the accompanying paper by Sennewald (2006). Additional examples are given which highlight the correct use of the Hamilton-Jacobi-Bellman equation and the change-of-variables formula (sometimes referred to as ``Itô's Lemma'') under Poisson uncertainty.