نتایج جستجو برای: important transportation routes
تعداد نتایج: 1232000 فیلتر نتایج به سال:
This paper concerns the domain of the multimodal transportation systems composed of buses, trains, trams and subways lines and focuses on the scheduling problems encountered in these systems. Transportation Network Infrastructure (TNI) can be modeled as a network of lines providing cyclic routes for particular kinds of stream-like moving transportation means. Lines are connected by common share...
Despite the growing role of barge transportation in the hinterland access of major seaports in Northwestern Europe, service network design for intermodal barge transportation has received little research attention. In this paper, a decision support model for service network design in intermodal barge transportation is presented. The model determines optimal shipping routes for roundtrip service...
Title of Thesis: Scheduling Under Uncertainty for a Single-Hub Intermodal Freight System Degree Candidate: Nikola Marković Degree and Year: Master of Science, 2010 Thesis directed by: Paul Schonfeld Professor Department of Civil and Environmental Engineering This thesis addresses the optimization of an intermodal system with freight transfers at a single hub. It investigates the transportation ...
The rapid growth experienced by many cities has created huge pressures on their traffic and transport systems. One common solution consists of increasing the number of roads available, but is not always the most appropriate. The application of Information and Communications Technologies enabling more efficient and effective use of the existing transport infrastructure is necessary (also known a...
This paper developed a mathematical model framework using the single allocation strategy for hub covering location problem. The model encompassed the transportation time covering under gradual decay function. Within a certain transportation time for the origin and destination nodes among two hubs, the route is fully covered, and beyond another specified transportation time the route is not cove...
The recent US Commodity Flow Survey data suggest that transporting hazardous materials (HAZMAT) often involves multiple modes, especially for long-distance transportation. However, not much research has been conducted on HAZMAT location and routing on a multimodal transportation network. Most existing HAZMAT location and routing studies focus exclusively on single mode (either highways or railw...
introduction hepatitis b infection remains a major health problem worldwide and is an important cause of morbidity and mortality. since it is transmitted parenterally, investigation of new cases of hepatitis b infections for potential routes of transmission plays a crucial role in controlling hepatitis b infection in the community. case presentation in this study, we reported a new case of hepa...
In modern agricultural production, the transportation of products is one most important components economic effect, since lion's share costs process cargo transportation. Increasing efficiency this to a large extent allows reduce cost grown products. Transportation in sector rather complex which various types equipment are often involved, both during loading and unloading operations, itself. ar...
A typical Vehicle Routing Problem (VRP) is to design the least cost routes for a vehicle fleet to supply goods from inventory to demanding customer locations. In this paper, we are interested in routing vehicles to minimize unmet demand and time delays. An important application of the presented model is to distribute medical supplies to response to large-scale emergencies, such as natural disas...
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