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Mapping and evaluating the complexity of information flows in freight transport chains
Transportation Planning and Technology ( IF 1.3 ) Pub Date : 2019-10-31 , DOI: 10.1080/03081060.2019.1675312
Vasco Reis 1 , Pedro Macedo 1
Affiliation  

ABSTRACT The role of information in the efficient management of freight transport systems is well acknowledged. Administrative functions, such as negotiation or payments, involve intensive communication, while the production of the transport service relies heavily on the sharing of information (e.g. track and trace). Yet, specific literature on information flows is relatively scarce. This paper sets out to contribute to filling in this gap. Firstly, it elaborates a set of maps of the information flows for four conceptualisations – direct link, corridor, hub and spoke, and connected hubs – of maritime freight transport, initially proposed by Woxenius (2007, “Generic Framework for Transport Network Designs: Applications and Treatment in Intermodal Freight Transport Literature.” Transport Reviews 27 (6): 733–749. doi:10.1080/01441640701358796). The results reveal a high degree of similarity between import and export services. Secondly, it assesses the complexity of each conceptualisation’s flow network using the concept of entropy. Flows are characterised along four variables: involved agents, timing, and contents and message type. Additionally, a new taxonomy is proposed to categorise the messages. The results evidence the heterogeneous contributions of each category to the complexity of the flows. Finally, the results also reveal that the information flows for the tasks in the pre-transport stage are not specific to the conceptualisation in question and are of comparable complexity to the flows occurring during the transport stage.

中文翻译:

绘制和评估货运链中信息流的复杂性

摘要 信息在货物运输系统的有效管理中的作用是众所周知的。行政职能,例如谈判或付款,涉及密集的沟通,而运输服务的生产在很大程度上依赖于信息共享(例如跟踪和追溯)。然而,关于信息流的具体文献相对较少。本文旨在为填补这一空白做出贡献。首先,它详细阐述了海运四个概念化——直接链路、走廊、枢纽和辐条和连接枢纽——的信息流图,最初由 Woxenius 提出(2007 年,“运输网络设计的通用框架:应用”)和多式联运文献中的处理”。运输评论 27 (6): 733–749. doi:10.1080/01441640701358796)。结果显示进出口服务之间存在高度相似性。其次,它使用熵的概念评估每个概念化的流网络的复杂性。流具有四个变量的特征:涉及的代理、时间、内容和消息类型。此外,还提出了一种新的分类法来对消息进行分类。结果证明了每个类别对流复杂性的异质贡献。最后,结果还表明,传输前阶段任务的信息流并不特定于所讨论的概念化,并且与传输阶段发生的信息流具有相当的复杂性。它使用熵的概念评估每个概念化的流网络的复杂性。流具有四个变量的特征:涉及的代理、时间、内容和消息类型。此外,还提出了一种新的分类法来对消息进行分类。结果证明了每个类别对流复杂性的异质贡献。最后,结果还表明,传输前阶段任务的信息流并不特定于所讨论的概念化,并且与传输阶段发生的信息流具有相当的复杂性。它使用熵的概念评估每个概念化的流网络的复杂性。流具有四个变量的特征:涉及的代理、时间、内容和消息类型。此外,还提出了一种新的分类法来对消息进行分类。结果证明了每个类别对流复杂性的异质贡献。最后,结果还表明,传输前阶段任务的信息流并不特定于所讨论的概念化,并且与传输阶段发生的信息流具有相当的复杂性。结果证明了每个类别对流复杂性的异质贡献。最后,结果还表明,传输前阶段任务的信息流并不特定于所讨论的概念化,并且与传输阶段发生的信息流具有相当的复杂性。结果证明了每个类别对流复杂性的异质贡献。最后,结果还表明,传输前阶段任务的信息流并不特定于所讨论的概念化,并且与传输阶段发生的信息流具有相当的复杂性。
更新日期:2019-10-31
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