Results 81 to 90 of about 2,789,801 (380)

Vehicle routing problems with multiple trips [PDF]

open access: yesAnnals of Operations Research, 2016
This paper presents a survey on the Multi-Trip Vehicle Routing Problem (MTVRP) and onrelated routing problems where vehicles are allowed to perform multiple trips. The first part ofthe paper focuses on the MTVRP. It gives an unified view on mathematical formulations andsurveys exact and heuristic approaches.
Dominique Feillet   +3 more
openaire   +6 more sources

A Survey on the Electric Vehicle Routing Problem: Variants and Solution Approaches

open access: yesJournal of Advanced Transportation, 2019
In order to ensure high-quality and on-time delivery in logistic distribution processes, it is necessary to efficiently manage the delivery fleet. Nowadays, due to the new policies and regulations related to greenhouse gas emission in the transport ...
Tomislav Erdelić, T. Carić
semanticscholar   +1 more source

Quantum Dots and Perovskites‐Based Physically Unclonable Functions for Binary and Ternary Keys via Optical‐to‐Electrical Conversion

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates optoelectronic PUFs that improve on traditional optical and electrical PUFs. The absorber materials are randomly coated through spray coating, ligand exchange, and dynamic spin coating. Incident light generates wavelength‐dependent binary multikey and enhances security ternary keys, approaching near‐ideal inter‐ and intra ...
Hanseok Seo   +6 more
wiley   +1 more source

Multi-objective optimization for the green vehicle routing problem: A systematic literature review and future directions

open access: yesCogent Engineering, 2020
This article aims to present research conducted on the literature regarding multi-objective optimization for routing problems with environmental considerations, referred to here as Multi-objective Optimization for the Green Vehicle Routing Problem ...
Júlio César Ferreira   +2 more
doaj   +1 more source

Hybrid Metaheuristics for the Clustered Vehicle Routing Problem [PDF]

open access: yes, 2014
The Clustered Vehicle Routing Problem (CluVRP) is a variant of the Capacitated Vehicle Routing Problem in which customers are grouped into clusters. Each cluster has to be visited once, and a vehicle entering a cluster cannot leave it until all customers
Battarra, Maria   +3 more
core   +2 more sources

Quasi‐Periodic Surface Functionalization by Ultra‐Short Pulsed Laser Processing: Unlocking Superior Heat Transfer in Vapor Chambers

open access: yesAdvanced Functional Materials, EarlyView.
Ultra‐short pulsed laser processing (ULSP) enables scalable, open‐air fabrication of self‐organized, quasi‐periodic micro/nanostructures on copper using 100 µm laser beams, orders of magnitude larger than the resulting surface features. Integrated into ultra‐thin, wick‐free vapor chambers, these laser‐functionalized surfaces dramatically enhance ...
Anish Pal   +7 more
wiley   +1 more source

Evaluating TCP performance of routing protocols for traffic exchange in street-parked vehicles based fog computing infrastructure

open access: yesJournal of Cloud Computing: Advances, Systems and Applications, 2020
As most vehicles remain parked 95% of its time, this suggests that leveraging the use of On-board Units (OBUs) in parked vehicles would provide communication and computation services to other mobile and fixed nodes for delivery of services such as ...
Awangku Muhammad Iqbal Yura   +5 more
doaj   +1 more source

A Computational Study of Genetic Crossover Operators for Multi-Objective Vehicle Routing Problem with Soft Time Windows [PDF]

open access: yes, 2008
The article describes an investigation of the effectiveness of genetic algorithms for multi-objective combinatorial optimization (MOCO) by presenting an application for the vehicle routing problem with soft time windows.
Geiger, Martin Josef
core   +1 more source

Highly Active Air Electrode with Enhanced Proton Conduction via Isovalent Doping in a Layered Perovskite for Reversible Protonic Ceramic Cells

open access: yesAdvanced Functional Materials, EarlyView.
A Ni‐doped PBSCN20 air electrode is proposed as a promising air electrode material for reversible protonic ceramic cells. An isovalent doping significantly facilitates oxygen vacancy formation and proton uptake while simultaneously reducing the energy barrier for proton migration.
Jiwon Yun   +7 more
wiley   +1 more source

Tackling Dynamic Vehicle Routing Problem with Time Windows by means of Ant Colony System

open access: yes, 2017
The Dynamic Vehicle Routing Problem with Time Windows (DVRPTW) is an extension of the well-known Vehicle Routing Problem (VRP), which takes into account the dynamic nature of the problem.
Breaban, Mihaela   +2 more
core   +1 more source

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