Results 51 to 60 of about 3,296 (197)
International Transactions in Operational Research, EarlyView.Abstract In this paper, we address the problem of routing a fleet of electric vehicles (EVs) to serve a set of customers, geographically distributed, within their time windows. We assume that EVs may also be recharged en route, and the amount of energy recharged at a recharging station (RS) is a decision variable itself, that is, partial recharges are ...
Maurizio Bruglieri +3 more
wiley +1 more source
Demand Selection for VRP with Emission Quota
Combinatorial optimization (CO) problems are traditionally addressed using Operations Research (OR) methods, including metaheuristics. In this study, we introduce a demand selection problem for the Vehicle Routing Problem (VRP) with an emission quota, referred to as QVRP.
Farid Najar +2 more
openaire +2 more sources
A matheuristic for the traveling salesman problem with positional consistency constraints
International Transactions in Operational Research, EarlyView.Abstract We propose a matheuristic for the traveling salesman problem with positional consistency constraints, where we seek to generate a set of routes with minimum total cost, in which the nodes visited in more than one route (consistent nodes) must occupy the same relative position in all routes.
Luís Gouveia, Ana Paias, Mafalda Ponte
wiley +1 more source
A Survey on the Electric Vehicle Routing Problem: Variants and Solution Approaches
Journal 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, Tonči Carić
doaj +1 more source
Assessing second‐price auctions for parcel exchanges in last‐mile logistics
International Transactions in Operational Research, EarlyView.Abstract The rapid growth of e‐commerce has led to multiple carriers operating in the same regions, creating opportunities for collaboration. However, logistics companies typically operate independently, leading to inefficiencies. Horizontal cooperation, where carriers share resources and infrastructure, can improve efficiency and reduce costs.
Christian Truden, Margaretha Gansterer
wiley +1 more source
International Transactions in Operational Research, EarlyView.Abstract We study an inventory routing problem with time windows (IRPTW). A single supplier serves a set of customers to fulfill their demand throughout a planning horizon. Each customer can be visited only within designated time windows, assuming each customer provides a single delivery time window valid for all periods.
Sara Charaf +5 more
wiley +1 more source
Perceptivni distraktori utječu na reprezentacije vidnoga radnog pamćenja samo u ranim fazama obrade
Psychological Topics, 2022 Jedan je od glavnih zadataka vidnoga radnog pamćenja (VRP) zaštita pohranjenih sadržaja od nevažnih vidnih podražaja u okolini, tj. od distraktirajućih informacija. Iako velik broj istraživanja pokazuje negativan utjecaj distraktora na sadržaje u VRP-u,
Ivan Tomić, Dragutin Ivanec
doaj +2 more sources
The application of machine learning models to optimal TSP tour length estimation
International Transactions in Operational Research, EarlyView.Abstract The traveling salesman problem (TSP) is a well‐known NP‐hard problem in combinatorial optimization, with numerous applications in logistics and elsewhere. This paper introduces a machine learning‐based approach to estimate the optimal tour length of the TSP, using linear regression, random forests (RF), and neural networks, including ...
Shuhan Kou, Bruce Golden, Luca Bertazzi
wiley +1 more source
Oral Health, Periodontitis, and Respiratory Diseases: Biological Pathways
Journal of Periodontal Research, EarlyView.This narrative review aims to provide a comprehensive update on the potential mechanisms by which poor oral health and periodontitis impact lung health, focusing on pneumonia, COPD, and asthma. ABSTRACT Poor oral hygiene and periodontitis influence lung diseases such as pneumonia, chronic obstructive pulmonary disease (COPD), COVID‐19, and asthma.
Raluca P. Vacaru +2 more
wiley +1 more source
Management System EngineeringWe investigate the degree of asymmetry in the variance risk premium (VRP) using SSE 50 ETF options in the Chinese market. Our approach decomposes the VRP into upside and downside components and quantifies the dynamic spillover asymmetry measure (SAM ...
Jue Gong +3 more
doaj +1 more source