市域(郊)铁路车辆选型方案探讨

随着城镇化进程的加快和城市经济辐射能力的增强,以特大城市中心城为核心的都市圈逐渐形成,都市圈内的经济联系更加紧密,都市圈核心区与外围的出行需求迅速增长,市域(郊)铁路的概念被引进,选择符合市域(郊)铁路特点的车辆类型是设计的重点。     

Consequences of a green image of drone food delivery services: The moderating role of gender and age

Drone food delivery services play a significant role in protecting the environment, because the services are operated by batteries that can be charged with electricity. Therefore, this study tried to examine a green image in the context of drone food delivery services. More specifically, this study proposed that a green image of drone food delivery services plays an important role in the formation of attitude toward using the services. In addition, it was hypothesized that the attitude has a positive influence on behavioral intentions including intentions to use, word‐of‐mouth intentions, and willingness to pay more. Lastly, the moderating role of gender and age was proposed during the theory‐building process. A theoretical model, which included 12 hypotheses, was developed and tested using a total of 427 samples collected in Korea. The data analysis results showed that a green image of drone food delivery services has a positive influence on attitude toward using the services, which in turn positively affects three subdimensions of behavioral intentions. Furthermore, gender and age played partly as a moderator. The current paper was the first to study the green image of drone food delivery services, so the findings of this study mean a lot to the theoretical aspect.     

How much are electric vehicles driven?

The prospect for electric vehicles as a climate change solution hinges on their ability to reduce gasoline consumption. But this depends on how many miles electric vehicles are driven and on how many miles would have otherwise been driven in gasoline-powered vehicles. Using newly-available U.S. nationally representative data, this paper finds that electric vehicles are driven considerably fewer miles per year on average than gasoline-powered vehicles. The difference is highly statistically significant and holds for both all-electric and plug-in hybrid vehicles, for both single- and multiple-vehicle households, and both inside and outside California. The paper discusses potential explanations and policy implications. Overall, the evidence suggests that today’s electric vehicles imply smaller environmental benefits than previously believed.     

我国商品物流配送中心发展战略的探讨

论述了建设配送中心的重要意义，介绍了我国配送中心发展的现状及存在问题，对我国今后配送中心的建设与发展提出了建设性意见。     

高新技术产业项目的绩效管理——基于软件项目管理的实证研究

针对高新技术产业广泛采用项目驱动的管理模式,在理论分析和实地调查的基础上,实证研究了客户、项目经理和激励制度对项目业绩的影响。结果发现客户对定制化需求大,但对标准化软件却有更高的边际利润;政府机构是大客户,但其垄断地位,所带来的销售利润率和项目交付率并不高;地域商务环境影响交易成本,进而显著地影响了项目的业绩水平;项目业绩受项目经理激励程度和方式的影响,但与项目经理认知特征无显著关系。这些结论说明软件企业在制定战略时,需以定制产品和定制服务为起点,但最终必须研发成为具有行业特点的标准化应用软件;在资源分配时,应重点关注地域商务环境好的客户,适当提高非政府机构行业客户的资源分配比例;应健全项目经理激励制度,促使项目提前完工,从而降低开发成本,增加项目业绩。     

物流合理配送问题的多阶段建模优化求解方法

简述了现有货物配装问题在实际应用中的缺陷,并针对货物配送问题,提出了多阶段建模优化求解方法,并应用于实例中。实例证明该方法所求得的最优解更具合理性和实际意义。     

期转现是大宗商品期货交割的有效形式

期转现是当今世界商品期货交易中通行的一种大宗商品期货交割方式,是期货交易方式与现货交易方式最有效率的结合,是典型的非标准期货交割方式.本文着重论述了期转现的积极效应和实现条件.     

顾客让渡价值分析：逆向营销视角

随着社会经济和科学技术的发展,逆向营销从根本上改变了传统营销的观念和方式,消费者成为整个营销过程的主导者。通过逆向营销的组合方式消费者能够获得更大程度的顾客让渡价值和顾客满意,并使企业能够在日趋激烈的竞争中更好地开展营销活动。     

完全BTO模式下的汽车物流与环境

描述了国内库存在汽车生产厂的上下游积压的现象,汽车生产与客户需求的完全脱节是重要原因,指出BTO是解决这个问题的可行方法,介绍了缩短OTD时间为3天的3daycar系统中可为国内汽车业借鉴的特征,从汽车物流的入厂物流与出厂物流两个方面论述了物流模式改变对环境产生的影响,并提出了为打造可持续发展的汽车物流对策。     

基于人机工程学的汽车驾驶模拟器座椅布置设计

根据人机工程学对汽车驾驶模拟器驾驶员座椅布置的要求,提出H点高度、方向盘、座椅靠背角,视野之间约束关系,应用计算机辅助设计方法,得到H点取值范围,选择合适的位置进行汽车驾驶模拟器驾驶员座椅布置设计.