نتایج جستجو برای: transportation network design

تعداد نتایج: 1595983  

2016
Xinyu Liu Qun Chen

This paper proposes an optimization algorithm, the dimension-down iterative algorithm (DDIA), for solving a mixed transportation network design problem (MNDP), which is generally expressed as a mathematical programming with equilibrium constraint (MPEC). The upper level of the MNDP aims to optimize the network performance via both the expansion of the existing links and the addition of new cand...

Journal: :The SIJ Transactions on Industrial, Financial & Business Management 2013

Journal: :Operations Research 2014
Endong Zhu Teodor Gabriel Crainic Michel Gendreau

The paper addresses the scheduled service network design problem for freight rail transportation. The proposed model integrates service selection and scheduling, car classification and blocking, train make up, and routing of time-dependent customer shipments, based on a cyclic three-layer space-time network representation of the associated operations and decisions, their relations and time dime...

2008
Lucio Bianco Massimiliano Caramia Stefano Giordani

In this work we consider the following hazmat transportation network design problem. A given set of hazmat shipments has to be shipped over a road transportation network in order to transport a given amount of hazardous materials from specific origin points to specific destination points, and we assume there are regional and local government authorities that want to regulate the hazmat transpor...

2018
Franccois Queyroi

Background. The design of efficient transportation networks is an important challenge in many research areas. Among the most promising recent methods, biological routing mimic local rules found in nature. However comparisons with other methods are rare. Methods. In this paper we define a common framework to compare network design method. We use it to compare biological and a shortest-path routi...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :international journal of agricultural management and development 0
lateef lawal adefalu department of agricultural extension and rural development, university of ilorin, ilorin, nigeria oluwasogo david olorunfemi department of agricultural extension and rural development, university of ilorin, ilorin, nigeria latifat kehinde olatinwo department of agricultural economics and extension, federal university, dutsin-ma, kastina state, nigeria yusuf olatunji department of agricultural extension and rural development, university of ilorin, ilorin, nigeria

this paper examines the effect of the poor road transportation network on crop production in one of the rural agrarian local government of kwara state, nigeria. a well-structured interview schedule was conducted to elicit information from 120 crop farmers using a two-stage sampling technique. findings from the study revealed that the poor road transportation network in their area had led to a r...

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