To optimize transportation network and decrease transportation cost in regional port cluster,this paper develops the optimization model of transportation network consisting of few regional original ports,one regional hub port and many destination ports,which considers random transportation capacity and concave costs in transportation routes.
①得出航线成本是航次运输批量的准凸函数,并对航次运输批量和航线成本进行优化;②在考虑航线成本最优条件下,对区域始发港到某个特定目的港之间的运输路线进行决策;③对区域始发港到所有目的港的整个运输网络的运输路线进行优化,提出区域港口群运输网络的整体最小成本和最优运输航线;④通过算例验证所提出的模型的实用性。
Loading and transportation is a key link during logistics delivering,The rational project of cargo loading will economize the capacity of wagons,The exact planning of vehicle routing in distribution will reduce rate of empty driving,lower cost of distribution and take great effect on the customer service level.
其次,运用运筹学中的Dijkstra算法建立模型,给出基于交通条件约束下直送式货物配送运输车辆路线进行优化的方法和步骤,得出最优运输线路。
It can be classified as area transport volume and line transport volume according to the distributing character and data collection requirement.
公路运输量是反映公路运输业生产成果的重要指标,从公路运输量的分布特征和采集数据的需要看,公路运输量可以分为区域运输量和线路运输量。
Allocation center establishment,allocation object choice,allocation way choice and transit route arrangement question should solve which in view of the coal mine interior commodity allocation system,takes and solves the allocation benefit appraisal question,the allocation charge method and the allocation information processing.
针对煤矿内部物资配送系统应解决的配送中心的设置、配送对象的选择、配送方式的选择和运输路线的安排的问题,重视和解决配送的效益评价问题、配送的收费方法和配送的信息处理。
of or relating to or situated at the ends of a delivery route.
属于、关于或位于运输路线的端点。
Research and Design of Decision Support System On Route Planning of Road Transport;
公路运输路线规划决策支持系统的研究与设计
(transportation) not on a regular route of a transportation system.
（运输业）不在运输系统的规则线路上的。
A track or route used for such carrying.
陆路用于这种运输的路线或途径
The Marketization Usage of Road Passenger-transport Line Resource;
道路旅客运输线路资源使用的市场化
A branch line of a transport system, as of an airline or a railroad.
支线如航空或铁路等运输系统的支线
Transmitted Capacity Improvement of Transmission Line with New Heat Resistance Wire
运用新型耐热导线提高线路输送容量
Appraisal Modelling for Interruption Losses on Transport Lines
运输线路运行中断损失评估模型研究
The Research on PDL Transportation Cost Calculation;
铁路客运专线运输作业成本测算研究
Research on Line-haul Network Design of Road Express;
公路快运企业干线运输网络构建研究
Carry on Conveyance Quantity Statistics on Highways,Promote the Development Highway Transportation System;
开展公路线路运输量统计 促进公路运输系统快速发展
travel or go by means of a certain kind of transportation, or a certain route.
通过一种运输方式或路线行进。
765 kV transmission line has operated for many years.
765kV的输电线路也已运行多年。
Study on Heat Capacity of Transmission Lines Being Operated;
运行条件下输电线路热载荷能力研究
The Discussion of Integrative Management Inoperating Overhaul of Transmission Circuitry
输电线路运行、检修一体化管理探讨
Fuzzy AHP Model Based on Entropy Weight for Selection of Route in Spent Fuel Road Transportation
基于熵权的乏燃料公路运输选线模型
Discussion on Operation and Maintenance Technology for 750kV AC Transmission Line
750KV交流输电线路的运行维护技术探讨
important route for traffic or transport,eg a road,railway line or river
干线（交通或运输的重要路线,如公路,铁路线或河流）.
