模式竞争与互补性:终端用户层面的成本优化

IF 0.1 Q4 ENGINEERING, CIVIL Romanian Journal of Transport Infrastructure Pub Date : 2018-12-01 DOI:10.2478/rjti-2018-0012
D. Costescu
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引用次数: 0

摘要

摘要:本文旨在确定在模态子系统上平衡运输流分配的可能方法,以有效地利用基础设施并减少当今不平衡的负面影响。从运输服务的可替代性、对完全竞争模型的符合程度以及交叉弹性需求的性质等经济概念出发,综述了多式联运竞争的各个方面。对整个基础设施组件执行自顶向下的分析。结果表明,在有效功假设的前提下,为了进一步分析,可以假设传递物质流的网络集与传递能量流、信息流和价值流的其他网络集是分离的。本文第二部分针对非连通网络,建立了考虑舒适性和安全性的多式联运广义成本优化模型。因此,现有的仅基于行程长度、行程持续时间和能耗的算法的性能可以得到显著提高。此外,作者提出了三种新的独立类型的模态分析,允许终端用户和参与运输组织的公司优化他们的模态选择和整个运输过程组织。
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Modal Competition and Complementarity: Cost Optimization at End-User Level
Abstract The paper aims to identify possible methods for balancing the allocation of transport flow on modal subsystems in order to efficiently use the infrastructures and reduce the negative effects of today’s unbalance. The aspects of intermodal competition are reviewed, considering the economic concepts regarding the substitutability of transportation services, conformation degree to the perfect competition model and the nature of cross elasticity demand. A top-down analysis over the whole infrastructure assembly is performed. The results, under the presumption of valid work hypothesis, indicated that for further analysis the set of networks transferring material flows can be assumed as disconnected from the other networks sets transferring energy, informational and values flows. The second part of the paper develops, for that disconnected networks, a generalized cost optimization model for multimodal transportation, where the comfort and safety are accounted. Thus, the performance of the existing algorithms based only on trip length, trip duration and energy consumption can be significantly improved. Additionally, the author proposes three new independent types of modal analysis that allow end-users and companies involved in transport organization to optimize their modal choice and the whole transport process organization.
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审稿时长
10 weeks
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