外资保险公司在华区位选择的决定因素——基于地级单位截取数据的分析

采用外资公司保费收入占比和外资公司机构数占比作为考察变量,利用我国2009年285个城市的分险种数据,通过托宾回归发现:市场规模、利润边际对外资保险公司进入的影响显著为正,而市场集中度和是否为中心城市的影响则显著为负;跟随客户战略只在财产险市场中得到支持,而金融业发展程度只在人身险市场中作用显著;从整体上来看,我国历史上"阶梯式"开放政策的持续影响已不显著。     

Analysing bicycle-sharing system user destination choice preferences: Chicago’s Divvy system

In recent years, there has been increasing attention on bicycle-sharing systems (BSS) as a viable and sustainable mode of transportation for short trips. However, due to the relatively recent adoption of BSS, there is very little research exploring how people consider these systems within existing transportation options. Given recent BSS growth around the world, there is substantial interest in identifying contributing factors that encourage individuals to use these systems. The current study contributes to this growing literature by examining BSS behavior at the trip level to analyze bicyclists’ destination preferences. Specifically, we study the decision process involved in identifying destination locations after picking up a bicycle at a BSS station, using a random utility maximization approach in the form of a multinomial logit model (MNL). The quantitative frameworks developed have been estimated using 2013 data from the Chicago’s Divvy system. In our modeling effort, we distinguish between BSS users with annual membership and short-term customers with daily passes. The developed model should allow bicycle-sharing system operators to plan services more effectively by examining the impact of travel distance, land use, built environment, and access to public transportation infrastructure on users’ destination preferences. Using the estimated model, we generated utility profiles as a function of distance and various other attributes, allowing us to represent visually the trade-offs that individuals make in the decision process. To illustrate further the applicability of the proposed framework for planning purposes, destination station-choice probability prediction is undertaken.     

An integrated modeling framework for design of logistics networks with expedited shipment services

This paper studied an integrated logistics network problem that determines optimal supplier locations, assignments of these suppliers to terminal facilities, expedited shipment configurations, and inventory management strategies in an uncertain environment. We studied the problem structure and proposed mathematical models to determine the optimal network design that minimizes the expected total system cost. We developed a customized solution approach based on Lagrangian relaxation that can solve these models efficiently and accurately. Numerical examples are conducted to draw managerial insights into how problem settings and key parameter values affect the optimal design results.     

基于误差相关矩阵的交会定位误差评估方法

提出了采用误差相关矩阵对三站和多站交会定位误差评估方法，分析了该方法的实际应用。     

跨国公司对华直接投资区位选择的集群导向

区位优势是跨国公司重要的竞争优势来源之一,空间集群则成为当代跨国公司突出的区位选择变量。集群化可带来成本优势,有利于提升企业创新能力,加强企业间合作,提升企业竞争力。政府应提高服务质量,发展产业相关性,培养集聚经济,加强区域吸引力,从而推动集聚经济的形成。     

Is sponsorship retention dependent on the geographic location of the sports facility?

This study tested the hypothesis that 'revenue maximization of the tenants of sports facilities is dependent on the geographical location of the facility (location of distribution)'. Revenue maximization was operationalized pertaining to sponsorship. A survey instrument was sent to all sponsors of a Melbourne-based football club. The sponsors were grouped as location dependent and location independent based on the location of their head office and financial turnover achieved in the area around the sports facility. The survey collected information on three different steps in the sports consumption process including 'coming to the sports facility', 'being in and around the sports facility' and 'being serviced in the sports facility'. t-Tests were run for most items of the questionnaire in relation to location dependency. Indicative evidence was found in support of the general hypothesis. In particular, direct sales (turnover) in the area around a sports facility were found to be an important factor when considering the issue of location dependency. Smaller, lowspending sponsors with an important percentage of turnover in the area around the sports facility were less likely to move with the football club to a (remote) new facility. In relation to sponsors' objectives, it was found that the objectives of location-dependent sponsors are directed more towards direct sales (or product /brand related as defined elsewhere), whereas location-independent sponsor's objectives seemed to be indirectly related to sales (or corporation related and generation of media benefits as defined elsewhere).     

“优势区位趋边”现象研究——空间现象与理论模型的契合分析

论文关注了"一些欠发达地区的中心城市位于区域边缘,而并不是按中心地理论处于区域中心",以及"一些欠发达地区原有中心城市发展缓慢,而处于地区边缘靠近发达地区的城镇发展迅速"(即"优势区位趋边")的现象,并以中心地理论为基础解释了这一现象存在的客观性.初步探讨其机理,最后给出了作者对优势区位趋边的理解,并分析了其研究意义.     

基于AHP-整数规划法的油料配送中心选址模型

油料配送中心选址对油料的保障效率有着重要的影响。影响油料配送中心选址的因素众多,文中首先选用层次分析法(AHP)法对这些影响因素进行处理,得到各个候选地址的权值。然后针对AHP方法无法解决条件约束问题,将AHP与整数规划方法相结合,提出了一种基于AHP-整数规划的油料配送中心选址模型。最后通过实例说明该模型能够有效解决油料配送中心选址问题。     

我国环境管制与FDI区位密度分布研究

本文在对环境管制与FDI区位分布相关研究文献回顾的基础上,利用面板数据实证检验了环境管制对FDI区位分布密度的影响。研究发现,环境管制对FDI区位分布密度的提升具有相当大的显著的负的效应;同时,人均GDP与国有化程度对FDI的相对密度提升具有非常显著的负的效应,对外开放程度与工资水平对FDI的相对密度提升具有非常显著的正的效应。该研究结果表明各地区在提高环境管制标准的同时,要推进体制改革与对外开放,形成加强环境保护与促进FD流入的良性互动。     

单一出厂定价制度下的厂商区位选择

修改Hotelling(1929)模型的基本假定,假定厂商边际生产成本为正,交通成本由消费者负担,厂商区位可以为内生变量,也可以为外生变量,在此假定前提下,分析厂商的最优的区位—价格策略,以探讨最大差异原则或者最小差异化原则何时成立,或者不成立。