نتایج جستجو برای: freight car allocation

تعداد نتایج: 147175  

2004
ARUN CHATTERJEE

ITE JOURNAL / DECEMBER 2004 INTRODUCTION AND SCOPE OF PAPER Planning for freight transportation in urban areas is not performed as commonly or as thoroughly as planning for passenger transportation, despite the fact that one of the seven factors for metropolitan planning specified in the federal legislation (the Transportation Equity Act for the 21st Century) mentions freight. Most planners and...

2014

The purpose of this paper is to provide an overview of how the intelligent transportation system (ITS) supports freight transportation operations. A study of the literature on transportation information and communication technology (ICT) and intelligent (or smart) transportation systems has been conducted. Documents of more than 60 companies producing or using intelligent transportation technol...

1998
Warren B. Powell Joel A. Shapiro Hugo P. Simao

In this paper we develop a new method for solving Dynamic Resource Allocation Problems (DRAP) that occur in the operation of freight transportation systems. Such problems involve the allocation of resources to perform tasks over a discrete-time, dynamic network. Our particular interest is in ultra-large scale problems, that involve managing thousands of resources (such as drivers or vehicles). ...

2007
Riko Jacob

We consider the situation of rearranging freight trains in a shunting yard with a hump and several tracks. Here, an elementary shunting operation is to push a all cars of one track over the hump. On the way back to the tracks the cars can be guided individually to an arbitrary track. The goal is to create one or several trains that have their cars in a particular order. We measure the efficienc...

2013
Rinaldo A. Cavalcante Matthew J. Roorda

Freight transport is the output of an economic market, which converts commodity flows into vehicle flows. Interactions in this market influence vehicle flows and since freight market characteristics (product differentiation and economies of scale/scope) violate perfect competition conditions, the output of this market cannot be predicted directly, unless these interactions are represented in th...

Journal: :Manufacturing & Service Operations Management 2010
Aditya Jain Harry Groenevelt Nils Rudi

We analyze a continuous review stochastic inventory model in which orders placed with a make-to-order manufacturer can be shipped via two alternative freight modes differing in lead-time and costs. The costs of placing an order and using each freight mode exhibit economies of scale. We derive an optimal policy for utilizing the two freight modes for shipping each order. This freight mode decisi...

2010
Baihua Zhang

Developing the country’s economic is a hot topic in Chinese society, and then the freight ability is a value that show the development of the local economic. The prediction of freight ability in country is benefit to the planning of country’s transport. This article choose suited input first, and then make up the GRNN model, at last ,predict the ability of the freight.

2004
JEAN-PAUL RODRIGUE

The geography of freight transportation evolves at various scales, but it is increasingly acknowledged that freight flows occurring at the local level are a result of global and regional economic processes. Internationally, distribution networks have expanded, namely through the division of production, manufacturing and consumption. This has been accompanied by a growth of the quantity of freig...

2002
Dieter Wild

This paper written for IMPRINT [IMPRINT, 2001] addresses the concerns of the freight transport with respect to urban pricing schemes. The viewpoints of the transport stakeholders, the limited reaction possibilities within the goods collection and distribution processes as well as the cities interests are presented for the different pricing motivations: the fair charging of infrastructure cost, ...

2013
GLENN LYONS JOHN HUNT FRASER MCLEOD

UK transport policy has shifted dramatically in recent years. The new policy direction seeks to promote walking as an alternative to the car for short trips. Midblock signalled pedestrian crossings are a common method of resolving the conflict between pedestrians and vehicles. This paper considers alternative operating strategies for midblock signalled pedestrian crossings that are more respons...

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