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51.
在对技术型企业家的定义、内涵、特征以及形成机制进行研究的基础上,提出了技术型企业家成长环境的三维模型,从一般环境、个人环境、特殊环境三个维度来分析影响技术型企业家成长的主要因素。并以湖南省为例进行实证研究,提出了优化技术型企业家成长环境建设的相应对策。  相似文献   
52.
全面振兴东北老工业基地需要创造良好的发展环境。当前东北老工业基地经济社会发展的困境与软环境建设滞后有直接的关系。文章阐述了东北地区在经济增长、人口形势与产业结构等方面面临的困境,分析了该地区在思想环境、市场环境、政务环境、政策环境、信用环境、法治环境、社会环境等普遍存在的问题,指出东北地区软环境建设滞后的根源在于政府在软环境建设中的主体责任不明晰,突出表现为政府职能转变不到位。作为推动国家治理体系和治理能力现代化的责任主体,政府应成为东北老工业基地软环境建设的规划者、引导者、组织者和监管者。通过树立软环境建设第一责任人意识、推进政府职能转变、加强绩效考核和行政问责来完善制约东北老工业基地发展的体制机制,打造适应经济新常态的区域软环境高地,推动东北老工业基地经济社会可持续发展。  相似文献   
53.
    
Growing importance of intermodal transportation necessitates modeling and solving load planning problems by taking into account various complex decisions simultaneously like transportation mode/service type selection, load allocation, and outsourcing. This paper presents a mixed-integer mathematical programming model for a multi-objective, multi-mode and multi-period sustainable load planning problem by considering import/export load flows to satisfy transport demands of customers and many other related issues. Several multiple objective optimization procedures are utilized in order to handle conflicting objectives simultaneously under crisp and fuzzy decision making environments. A real-life case study is also performed to present application and usefulness of the proposed model.  相似文献   
54.
立足于会展企业,以蓝海战略的理论范式从商业生态系统的视角,对会展企业之间、会展企业与旅游企业之间的关系进行研究,探讨会展企业生态关系的优化思路,以寻求会展企业的长期生存和发展。  相似文献   
55.
适应中国高速铁路客流特性的售票组织策略优化研究   总被引:1,自引:0,他引:1  
售票组织是铁路客运日常管理工作的重要内容之一,其策略的制定必须与客流特性相适应。分析中国高速铁路客流与既有线及国外高铁客流的不同点,在此基础上,提出以席位销售优化控制为核心的售票组织策略。实践证明了所提出策略的有效性。  相似文献   
56.
    
Electric vehicles (EV) use an eco-friendly technology that limits the greenhouse gas emissions of the transport sector, but the limited battery capacity and the density of the battery are the major barriers to the widespread adoption of EV. To mitigate this, a good method seems to be the innovative wireless charging technology called ‘On-Line EV (OLEV)’, which is a contactless electric power transfer technology. This EV technology has the potential to charge the vehicle’s battery dynamically while the vehicle is in motion. This system helps to reduce not only the size of the battery but also its cost, and it also contributes to extending the driving range before the EV has to stop. The high cost of this technology requires an optimal location of the infrastructure along the route. For this reason, the objective of this paper is to study the problem of the location of the wireless charging infrastructure in a transport network composed of multiple routes between the origin and the destination. To find a strategic solution to this problem, we first and foremost propose a nonlinear integer programming solution to reach a compromise between the cost of the battery, which is related to its capacity, and the cost of installing the power transmitters, while maintaining the quality of the vehicle’s routing. Second, we adapt the multi-objective particle swarm optimization (MPSO) approach to our problem, as the particles were robust in solving nonlinear optimization problems. Since we have a multi-objective problem with two binary variables, we combine the binary and discrete versions of the particle swarm optimization approach with the multi-objective one. The port of Le Havre is presented as a case study to illustrate the proposed methodology. The results are analyzed and discussed in order to point out the efficiency of our resolution method.  相似文献   
57.
随着我国石油需求量及进出口量的不断增长,研究我国水上石油物流系统的优化问题日益重要,本文首先分析了水上石油物流系统研究的必要性,对国内外关于石油物流系统研究现状进行了评述,提出了我国水上石油物流系统优化问题的研究思路和方法.  相似文献   
58.
Abstract

This paper studies the difference in global equity portfolios allocated by the criterion of minimizing the risk by using two different risk measures, the standard deviation and the conditional value at risk. An empirical analysis is performed on a comprehensive stock exchange database. The main hypothesis of the present work is that the choice of risk measure has crucial importance in portfolio optimisation, especially in those situations when the stock markets are extremely volatile and the return distributions are non-normal. The rationale behind establishing minimum-risk portfolios is to keep track of the highest possible risk reduction benefits from international diversification.  相似文献   
59.
于涛 《价值工程》2014,(14):68-69
本文在分析目前土建工程现场管理主要内容及所存在问题的基础上,对优化土建工程现场管理提出合理化建议。  相似文献   
60.
Capital structure denotes enterprises' form and proportion relation of various long-term funds source. The capital structure is the combination problem of the long-term funds about enterprise development and it is the quantity and proportion between every fund form. This paper analyzes the various factors which affect capital structural decision-making, and introduces capital structural optimization theory of the shelter benefit of tax revenue and bankruptcy cost balance. It studies the method and the evaluation criterion of capital structural optimization. And it constructs capital structural optimization model of coexistence condition of company's income tax and individual income tax. This will be very helpful for the rationality of enterprise capital structure.  相似文献   
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