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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Proposta de um modelo matemático para o problema dial-a-ride aplicado ao transporte de cadeirantes

Rodrigues, Patrícia Perretto 16 September 2011 (has links)
Made available in DSpace on 2016-12-23T14:05:56Z (GMT). No. of bitstreams: 1 patricia rodrigues parte 1 p 1-46.pdf: 620096 bytes, checksum: 2df2214171a193891fb63f38e815ac0e (MD5) Previous issue date: 2011-09-16 / Problems that deal with wheelchair users public transportation are often solved by Dial a Ride Problem (DARP) with time window (Time Window TW). The goal of this type of problem is the minimization of the operation cost, in other words, the ride time respecting constraints like time windows for pickup and delivery of each user, the number of vehicles available and each vehicle capacity. This thesis proposes an exact Mixed Integer Linear Program model to solve the DARPTW. In order to apply the model in a real application, the model was tested with data provided by the Vitória City Hall Infrastructure and Transportation Secretary. The model was implemented using CPLEX software and the results showed that instances up to 20 wheelchair users can be solved optimally. Moreover, it was done an analysis for fleet used / Os problemas de transporte público de cadeirantes são comumente resolvidos pelo modelo Dial-a-Ride Problem (DARP) com janelas de tempo (Time Window - TW). Com base nas restrições de janela de tempo na origem e no destino de cada cliente, no número de veículos e na capacidade de cada um deles, deseja-se minimizar os custos de atendimento dessas demandas, ou seja, o tempo de viagem. A presente dissertação propõe um modelo de Programação Linear Inteira Mista para resolver o problema do DARP-TW. Visando uma aplicação do modelo no transporte público de cadeirantes foram utilizados dados reais fornecidos pela Secretaria de Transportes, Trânsito e Infraestrutura da Prefeitura de Vitória. O modelo foi executado no software CPLEX e os resultados mostraram que cenários com até 20 clientes podem ser resolvidos otimamente. Além disso, foi possível uma análise em relação à frota utilizada

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