Results 41 to 50 of about 21,347 (311)

Vehicle routing problem with deliveries and pickups: Modelling issues and meta-heuristics solution approaches

open access: yes, 2014
The paper investigates a class of extensions to the vehicle routing problem. Different problem versions – some well-known, some more recent – are explained and placed in a taxonomy. A central focus of the paper is on the assumptions generally made in
Nagy, Gábor, Wassan, Niaz A.
core   +1 more source

On the Reformulation of Vehicle Routing Problems and Scheduling Problems [PDF]

open access: yes, 2002
We can reformulate a vehicle routing problem (VRP) as an open shop scheduling problem (SSP) by representing visits as activities, vehicles as resources on the factory floor, and travel as set up costs between activities. In this paper we present two reformulations: from VRP to open shop, and the inverse, from SSP to VRP.
J. Christopher Beck   +2 more
openaire   +1 more source

On the differential evolution for vehicle routing problem [PDF]

open access: yes2013 International Conference on Soft Computing and Pattern Recognition (SoCPaR), 2013
Vehicle Routing Problem (VRP) is a well known NP-hard optimization problem with a number of real world applications and a variety of different versions. Due to its complexity, large instances of VRP are hard to solve using exact methods. Instead, various heuristic and meta-heuristic algorithms were used to find feasible VRP solutions.
Pavel Krömer   +4 more
openaire   +1 more source

Determination of inventory replenishment policy with the open vehicle routing concept in a multi-depot and multi-retailer distribution system

open access: yesEngineering and Applied Science Research, 2018
The Inventory Open Vehicle Routing Problem (IOVRP) involves decisions in inventory replenishment and vehicle routing of a system having multiple depots and multiple retailers.
Anchalee Supithak, Wisut Supithak
doaj   +1 more source

Vehicle Routing Problem When Using UAVs

open access: yesКібернетика та комп'ютерні технології, 2021
Introduction. In recent years, the use of unmanned aerial vehicles (UAVs) is growing rapidly. Initially introduced for military purposes, drones and related technologies have been successfully switched to a number of new civilian applications in the last
Iryna Norba
doaj   +1 more source

Overview of fuzzy vehicle routing problems

open access: yesAdvanced Engineering Research, 2020
Introduction. Various algorithms for solving fuzzy vehicle routing problems are considered. The work objective was to study modern methods for the optimal solution to fuzzy, random and rough vehicle routing problems. Materials and Methods.
Yu. O. Chernyshev   +2 more
doaj   +1 more source

Disruption management of the vehicle routing problem with vehicle breakdown [PDF]

open access: yes, 2011
This paper introduces a new class of problem, the disrupted vehicle routing problem (VRP), which deals with the disruptions that occur at the execution stage of a VRP plan.
Eglese, R W, Mu, Q, Fu, Z, Lysgaard, J
core  

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

A unified tabu search algorithm for vehicle routing problems with soft time windows [PDF]

open access: yes, 2007
The different ways of allowing time window violations lead to different types of the vehicle routing problems with soft time windows (VRPSTW). In this paper, different types of VRPSTW are analysed.
Eglese, R W   +7 more
core   +1 more source

Vehicle Routing Problem with Time Window Constrain using KMeans Clustering to Obtain the Closest Customer

open access: yes, 2022
In this paper the problem statement is solving the Vehicle Routing Problem VRP with Time Window constraint using the Ant Colony Algorithm with K-Means Clustering In this problem the vehicles must start at a common depot pickup from various ware ...
Al-Nakash, Nushwan Yousif   +3 more
core   +1 more source

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