Many cities and towns offer to citizens a Bike-Sharing System (BSS). When company starts the service, multiple decisions have be taken at strategic, tactical, operational level. service is in place, it often necessary adapt these changed conditions. In this paper, starting from experience gained real-case of Bicimia Brescia, Italy, we present simulation framework support design or revision BSS,...

We propose two distributionally robust optimization (DRO) models for a mobile facility (MF) fleet-sizing, routing, and scheduling problem (MFRSP) with time-dependent random demand as well methodologies solving these models. Specifically, given set of MFs, planning horizon, service region, our aim to find the number MFs use (i.e., fleet size) within horizon route time schedule each MF in fleet. ...

4 A single product maritime inventory routing problem in which the production and con5 sumption rates vary over the planning horizon is studied. The problem includes a heteroge6 neous fleet and multiple production and consumption ports with limited storage capacity. 7 Two discrete time formulations are developed. One is a standard formulation and the other 8 is a fixed charge network flow refor...

in our country, student transportations’ security and driving accidents statistics for students is one of the major concerns for relevant organizations such as educational organization. in current year, a system, was named sepand, was formed in city taxi driver :::::::union::::::: by educational organization, naja traffic and city taxi driver :::::::union:::::::. in this systems’ plan, basis on...

The drive towards a greener and more sustainable future is encouraging the aviation industry to move increasing electrification of its fleet. development electric propulsion technologies also requires new approaches assess their viability in novel configurations. A methodology proposed which consists four sub-procedures; powertrain modelling, performance analysis, aerodynamic sizing. This appro...

In this paper, we address the problem of determining the optimal fleet size for three vehicle routing problems, i.e., multi-depot VRP, periodic VRP and multidepot periodic VRP. In each of these problems, we consider three kinds of constraints that are often found in reality, i.e., vehicle capacity, route duration and budget constraints. To tackle the problems, we propose a new Modular Heuristic...

Abstract The accelerated electrification of transport systems with EVs has brought new challenges for charging scheduling, fleet management, and infrastructure location configuration planning. In this review, we have provided a systematic review the recent development in strategic, tactical, operational decisions demand responsive system planning using electric vehicles (EV-DRT). We summarized ...

In this paper we address a supply vessel planning problem arising in servicing oil and gas offshore installations. Supply vessels provide offshore installations with necessary supplies on periodic basis from offshore supply bases according to weekly sailing schedules. The execution of weekly schedules during the year is affected by weather conditions influencing on sailing time and service dura...

We present a solution approach for multi-trip vehicle routing problem with time windows in which the locations of prescribed number depots and fleet sizes must also be optimized. Given complexity task, we divide into subproblems that are solved sequentially. First, address strategic decisions, once remain constant thereafter. Depots allocated by solving p-median determined identifying requireme...