A genetic algorithm based approach to transactional and QoS-aware service selection

As there are various risks of failure when Web services are deployed in unreliable environment, the execution of a composite Web service (CWS) requires the transaction mechanism to guarantee its reliable execution. However, the existing service selection approaches consider QoS and transaction separately and have not considered that transactional properties may affect the QoS such as the execution time of a CWS. This work addresses the importance of considering transactional properties and how the transactional properties affect the QoS simultaneously in the process of service selection by a QoS-aware and transactional-aware selection approach. First, a performance evaluation method is proposed to calculate the execution time of a transactional CWS. Then, a genetic algorithm based approach, which takes into account the execution time, price, transactional property and successful execution rate of CWS, is presented to achieve global optimisation service selection. Finally, experimental results show the efficiency and effectiveness of the approach.     

中小企业商业模式创新与实现路径的分析——基于系统框架的思考

商业模式创新,是解决当前中小企业面临发展困境的有效途径。文章以中小企业为对象,在构建商业模式创新系统及对三种不同类型中小企业进行商业模式创新类型定位的基础上,重点讨论了适合于挖掘型创新的配套中小企业及适合于调整型创新的市场型、科技型中小企业商业模式创新的路径,同时从新发展的视角,探讨了中小企业互联网+商业模式创新路径,以期为中小企业商业模式创新提供思路。     

金沟河流域渠首枢纽泥沙淤积原因分析及治理

通过对金沟河流域渠首枢纽基本情况的概述,总结当前渠首枢纽泥沙运行处理的基本现状和泥沙淤积产生的危害,进而分析泥沙淤积产生的原因,最终提出解决渠首枢纽泥沙淤积具体措施,依此可以发挥枢纽工程的最大效益,给灌区和管理单位带来巨大的经济效益和社会效益。     

The Asymmetric Information Problem in Taiwan's Cancer Insurance Market

This paper investigates the problem of asymmetric information in Taiwan’s cancer insurance market. Through the survey data, we find evidence of adverse selection existing in this market. Furthermore, we collect additional information on the individual, and find that the individual’s family cancer history contains additional valuable information. It can not only more accurately predict the probability of contracting cancer, as well as predict the willingness to purchase extended cancer insurance, but it can also help to mitigate the severity of adverse selection in the insurance market.     

基于EIQ和PCB的配送中心设备决策模型的研究

讨论了EIQ和PCB分析的基本内容.分析影响配送中心储存、分拣和搬运设备选择的因素,以及EIQ和PCB分析在配送中心设备选择中的应用,最后提出基于EIQ和PCB分析的配送中心设备决策模型DC-EDM.     

浙江省研发产业发展障碍及对策研究

目前,基于资源、能源和人力资源约束下的传统产业发展面临极大的困难,浙江省迫切需要发展研发产业,以实现经济转型和产业升级.本文以研发产业发展环境支撑体系为理论基础,对浙江省研发产业发展面临的障碍及其产生的原因进行了实证分析,并提出相应的解决对策.     

Cognition of disaster risk in a tourism community: an agricultural heritage system perspective

Cognition of risk is the first step in reducing disaster damage and losses. In this study, risk cognition in the Hani Rice Terraces, the core tourism attraction in Yuanyang County, Honghe Prefecture, Yunnan, China, is analyzed based on field survey and participatory geographic information system (GIS). The results show that tourism communities have cognition of risk; are more sensitive to hazards (especially drought); have more severe potential damage and losses from hazards; and also have more enthusiasm to adapt to disaster risk, when compared with a non-tourism community. On disaster vulnerability maps, the tourism communities identified the unique “Forest – Village – Terrace - River” landscape while the non-tourism community only recognized the terrace and the village as the main elements affected by hazard. Also, the tourism communities had deeper understandings of drought, flash floods and landslide disaster risks. A conceptual model based on “Pressure – State – Response” relationships is put forward to explore the situation in which, in the tourism community, terraces have a greater variety of functions and enhanced values resulting in the spatial expansion of hazard effects.     

浅论钢筋混凝土与预应力混凝土桥梁的加固

随着交通量的迅猛增长和车辆的重型化,原有桥梁承载力明显不足;各种病害影响发生强度、刚度降低;采取粘FRP的方法对钢筋混凝土和预应力混凝土桥梁进行加固取得较好的效果。     

广义转型视角下的制度移植——日本明治维新与俄罗斯休克疗法的比较研究

从广义上来说,转型是从一个社会成熟状态向另一个社会成熟状态的转变。通过移植先进国家的制度来推动制度变迁是实现转型的一种重要方式。在历史上,制度移植既有成功的经验,也有失败的教训。通过对日本明治维新和俄罗斯休克疗法的比较,文章认为,成功的制度移植需要注重对慢动制度的诱导。而教育、示范、学习乃至奖惩等方式在诱导慢动制度变革方面可以发挥重要的作用,从而为制度移植的成功提供保障。在此基础上,文章进一步分析了俄罗斯转型的发生机理和绩效。     

基于逆向选择视角下的快递企业品牌建设研究

基于信息不对称性产生的逆向选择一直是微观经济学、信息经济学研究的重点。随着电子商务的蓬勃兴起，我国快递行业发展进入快车道。但是，多数快递企业竞争手段单一，服务单一，不注重品牌建设，集中于低端市场，顾客忠诚度低。本文利用逆向选择模型分析快递市场，指出品牌建设有助于缓解和改善信息不对称性对于企业和消费者的伤害，明确品牌建设对于快递企业的意义和作用。