铁路编组站布局的双层规划方法研究

运用双层规划对编组站布局问题进行描述,上层规划表示决策者为了达到车流组织最优而采取的最优投资策略,下层规划为给定编组站布局方案条件下的车流组织优化。通过对上层和下层问题分别剖析,构建了编组站布局的双层规划模型,考虑到模型的复杂性,提出应用遗传算法求解,并给出了求解策略。研究结果表明,双层规划方法适用于实际编组站布局问题决策。     

汇市干预的理论与实证分析——来自日本的经验

本文以颇具代表性的日本货币当局外汇干预的模式为参照系,对当今世界资金规模最大、金融领域最前沿的外汇市场从理论和实践的角度进行论证,旨在为未来我国人民币国际化后所必将产生的外汇干预等相关问题提供具有实际意义的建议与理念。     

On the emergence of scale-free production networks

We propose a simple dynamical model for the formation of production networks among monopolistically competitive firms. The model subsumes the standard general equilibrium approach à la Arrow–Debreu but displays a wide set of potential dynamic behaviors. It robustly reproduces key stylized facts of firms׳ demographics. Our main result is that competition between intermediate good producers generically leads to the emergence of scale-free production networks.     

论证券投资基金的收益及其分配

证券投资基金的收益主要包括利息收入，股利收入和资本利得。在甸证券市场发育不完善的现阶段，出于会计谨慎性原则的考虑，证券投资基金的收益不应包括股票股利和未实现的资本利得。在收益分配方面，管理层对证券投资基金收益分配政策的限制过程多过死，不利于投资基金业的健康发展，基金持有人大会在基金收益分配政策的制定上应当享有更多的决定权。     

“小汽车家庭化”与宏观交通决策

我国部分城市和沿海发达地区已经进入“小汽车家庭化”的阶段。家庭对私人小汽车的需求极大地推动了我国汽车工业及其相关产业链的发展,但也带来了一系列严重的交通问题。根据对国外不同城市交通发展模式的分析,结合我国的具体国情,我国的宏观交通决策仍应坚持公共交通为主导,适度鼓励发展节能环保的微型汽车,对私人小汽车的使用方式进行引导,同时通过城市道路系统的改造和建立先进的交通管理系统,应对“小汽车家庭化”带来的挑战。     

Building up a B2B e-commerce strategic alliance model under an uncertain environment for Taiwan's travel agencies

E-travel agencies adopt B2B strategic alliances in order to strengthen their competitive advantages in the e-commerce travel market and because they are an effective tool to gain wider sustainable gains. External environmental and internal organizational factors impacting the success of strategic alliances model are themselves a crucial issue. This study uses multiple methods to collect data from multiple sources and uses qualitative and quantitative surveys. A two-stage research design is adopted to explore the present strategic alliances between Taiwan's wholesaler e-travel agencies and retailer sub-agencies. The results provide an in-depth understanding into the B2B e-commerce strategic alliance model. According to this research, Taiwanese e-travel agencies consider three external environment uncertainties, five internal organization motivations, five partner selection criteria, and two performance measurements of alliance strategies. Finally, the paper proposes an optimal B2B e-commerce strategic alliance model that matches the essential development needs of B2B e-commerce and overcomes the environmental uncertainties.     

居民金融资产结构变化与国债认购空间分析

国债是居民持有的重要金融资产,居民对其金融资产结构的调整会影响国债的发行规模,本文通过国际比较分析总结了居民金融资产结构变化的规律。并考察了我国居民金融资产流量结构的变化趋势和国债在居民金融资产结构中的地位,为此为基础,对“十五”期间政府面向居民可以发生国债的规模进行了预测。     

我国金融发展对居民收入分配影响的实证研究

我国金融发展对城乡居民收入分配影响的实证研究结果表明:金融发展规模是城乡居民收入差距的格兰杰原因;金融发展效率与城乡居民收入差距具有双向的格兰杰因果关系.金融发展规模的扩张扩大了城乡居民收入差距,金融发展效率的提升则缩小了城乡居民收入差距.     

The distinction between commercial and non-commercial bus services in Germany: Given by nature?

German public transport services by bus are characterized by a regulatory framework that distinguishes between commercial and non-commercial services. Contrary to the apparent views of legislators, this paper shows that costs and revenues are not the only parameters determining whether or not operators are able to provide services in a commercially viable way.Apart from the local characteristics of the specific service, we show that the classification of services as commercial versus non-commercial is determined in large part by the public transport authorities that set minimum quality standards to be provided by operators. Our analysis shows that the authorities awarding the contracts in some cases affect market organization significantly depending on how they make use of this power. Furthermore, market organization differs substantially with respect to the awarding structure and the contractual relationships, thus creating a challenge for operators and authorities in an embryonic market.     

城市交通问题的产权分析

通过对多个城市的观察,发现《中华人民共和国道路交通安全法》的许多条款形同虚设,得不到切实的执行。本文根据产权理论对这一现象进行了分析,解释当前城市交通问题的主要成因即：车辆的增多、无法识别、十字路口和交通意识。产权的主要作用是帮助人们形成与他人交流的信息的预期,有了清晰界定的产权,就可以减少城市交通中人与人之间的不确定性,减小冲突的发生。为此,本文提出了解决城市交通问题的政策建议,即限制行车数量、增强非机动车辆的识别能力和规范十字路口标识,提高公民城市交通意识。通过减少交易成本,清晰的界定产权等手段规范城市交通,从而帮助行人建立稳定的预期,保证道路畅通。