基于DSRC和CDPD的先进公交系统

本文首先讲述了ITS中的2种通信技术——专用短程通信（DSRC）和蜂窝数字分组数据网（CDPD）的基本概念、工作原理及系统特点等，然后提出了一种基本这2种通信技术的先进公交系统，并对各个子系统的功能结构进行了描述。     

THE LAST MILE: AN EXAMINATION OF EFFECTS OF ONLINE RETAIL DELIVERY STRATEGIES ON CONSUMERS

The Internet has increased the level of importance of the end‐consumer market to transportation carriers. In two between subject experiments, carrier disclosure on retail merchant websites is examined as a strategic differentiation strategy. Predictions are offered concerning effects of carrier disclosure strategies on product delivery‐related expectations, consumer attitudes, and intentions to purchase a product online. Results from Study 1 reveal significant differences between disclosure and nondisclosure of the carrier for numerous product delivery‐related variables, as well as many differences between the six carriers examined in this first study. Study 2 extends these findings by showing that providing consumers with a choice of carrier leads to increased levels of satisfaction with the online experience and greater willingness to buy, relative to nondisclosure and disclosure strategies.     

针对物流的交通需求管理研究探讨

本文简要介绍了国内外交通需求管理的研究状况,阐述了在物流领域实施交通需求管理的意义和特征,提出了一些针对物流的交通需求管理策略,对我国在物流领域实施交通需求管理有一定的指导意义。     

物流运输路线选择与成本节约

目前城市物流运输要解决的迫切问题是如何在日益拥挤的城市交通条件下提高运营效率,降低由于交通拥挤给企业带来的运输成本增加。本文通过对传统的运输路线选择模型和算法的分析,提出了根据路网实时动态交通条件进行运输路线选择的模型,并对动态运输路线选择的成本节约进行了分析。     

Container yard template planning under uncertain maritime market

A yard template determines the assignment of spaces in a yard for arriving vessels. Fluctuation of demand for freight transportation brings new challenges for making a robust yard template when facing uncertain maritime market. A model is proposed for yard template planning considering random numbers of containers that will be loaded onto vessels that visit the port periodically. Traffic congestions and multiple schedule cycle times for vessel arrival patterns are also considered. Moreover, a meta-heuristic method is developed for solving the model in large-scale cases. Numerical experiments are conducted to validate effectiveness and efficiency of the model.     

Policy and politics behind Shanghai’s Free Trade Zone Program

China launched the Shanghai Free Trade Zone (FTZ) Program on September 29, 2013 in a bid to reduce administrative interventions, ease restrictions on investments, further open up its financial system, and internationalize its currency to booster shipping, logistics, and commerce. This article aims to present a background of the Shanghai FTZ and some reflections on it. China’s economic reconstruction has made a major impact on its port cities. Competitions between ports are gradually evolving into competitions between supply chains, with ports no longer considered as isolated links in the transport chain but rather as integral links in the supply chain. Ports are transitioning into fourth-generation ports with the establishment of logistics and value-added activities, which are developed in conjunction with local industrial and service businesses. In this trend, China’s port cities can provide a wide range of value-added services and become centers of commodity flow, capital flow, and information flow. Specifically, the combined effects of driving the development of peripheral industries and actively coordinating the activities of relevant parties help regulate the operations of the entire supply chain to obtain potential value-added benefits. The implementation of the Shanghai FTZ will not only stimulate trade but will also bring increased shipping and finance opportunities to the city. With free trade as the new direction and focus of the country’s economic initiatives, the Shanghai FTZ will hopefully lay the groundwork for a new round of reforms and restructuring of the Chinese economy.     

Container drayage problem with flexible orders and its near real-time solution strategies

This article studies a container drayage problem with flexible orders defined by using requiring and releasing attributes as a unified formulation of various order types. A determined-activities-on-vertex (DAOV) graph introduces a temporary vertex set to formulate different truck statuses. The problem is formulated as a mixed-integer nonlinear programming model based on the DAOV graph. Four strategies including a window partition based (WPB) strategy are presented and evaluated extensively to solve the problem. Results indicate that the WPB method could solve the problem effectively and efficiently. Furthermore, this method is robust considering the operating time biases compared to other algorithms.     

COVID-19, commuting flows,and air quality

Fossil-fuel burning transportation methods significantly contribute to air pollution. During the COVID-19 pandemic, South Korea experienced a 10-20% decline in commuting flows, even without government-mandated stay-at-home orders. This paper quantifies the impact that decreased commuting flows have on PM_2.5, PM₁₀, NO₂, CO, and SO₂, using municipality level commuting data. We find that a 1% decrease in commuting flows decreases air pollutants by 0.08-0.17%, after controlling for seasonality and time-varying local production. The effect was higher in regions with high initial pollution, and people recognized air quality improvements. These results emphasize the importance of encouraging cleaner transportation methods after the pandemic.     

论营改增对交通运输企业利润的影响——以中海发展股份公司为例

2016年5月1日,营改增将进行最后四个行业的全面试点,从2012年首先开始于交通运输业等行业的营改增,已经进入了收关之际.从历经4年多的试点结果来看,从2012年试点到2015年底,"营改增"已经累计减税5000多亿元,结构性减税效果明显.交通运输业作为我国重要的行业,又是第一批试点行业,虽然交通运输业营改增后,流转税负呈下降的趋势,但对交通运输行业的利润影响是否是正向的还需要科学的研究,因此,本文以中海发展股份公司为例,分析营改增后影响交通运输业利润的变化及因素,并给出相应的建议.     

Exploring impact factors of shippers’ risk prevention activities: A European survey in transportation

This paper reports results of a survey examining the impact factors for shippers to implement risk prevention activities. A regression analysis illustrates the relations between risk and quality related impact factors and the shippers’ ability to implement risk prevention activities. The study identifies the corporate risk culture and product vulnerability as main impact factors for the implementation of prevention activities in transportation. This paper will be beneficial for transportation managers considering the implementation of risk prevention activities in the transportation field, and will support further empirical research in the transportation management and supply chain risk management research area.