Results 61 to 70 of about 28,852 (210)

Production routing decisions in a two‐echelon supply chain with multiple delivery modes

International Transactions in Operational Research, EarlyView.
Abstract We study an original two‐echelon production routing problem with multiple delivery modes (2E‐PRP‐MDM). In the first echelon, the primary production facility is tasked with satisfying the demands of two distinct entities: a set of warehouses and a set of customers through direct shipments. In the second echelon, warehouses become delivery hubs,
Rachida Benfedel, Fayçal Belkaid, Nadjib Brahimi   +2 more
wiley   +1 more source

Cosolver2B: An Efficient Local Search Heuristic for the Travelling Thief Problem

, 2016
Real-world problems are very difficult to optimize. However, many researchers have been solving benchmark problems that have been extensively investigated for the last decades even if they have very few direct applications.
Ahiod, Belaïd, Yafrani, Mohamed El
core   +1 more source

OPTIMIZING BI-OBJECTIVE MULTIPLE TRAVELING SALESMEN ROUTES FOR DISASTER RELIEF LOGISTICS USING GENETIC ALGORITHM

Barekeng
Handling natural disasters such as floods requires efficient logistics distribution to minimize the negative impact on victims. Distribution route optimization becomes very important in this process.
Amos Hatoguan Sihombing, Ratna Herdiana, Jovian Dian Pratama   +2 more
doaj   +1 more source

Optimization of Multiple Traveling Salesman Problem Based on Simulated Annealing Genetic Algorithm

MATEC Web of Conferences, 2017
It is very effective to solve the multi variable optimization problem by using hierarchical genetic algorithm. This thesis analyzes both advantages and disadvantages of hierarchical genetic algorithm and puts forward an improved simulated annealing ...
Xu Mingji, Li Sheng, Guo Jian
doaj   +1 more source

An Integer Programming Based Approach to Delivery Drone Routing under Load-Dependent Flight Speed

Drones, 2023
Delivery drones have been attracting attention as a means of solving recent logistics issues, and many companies are focusing on their practical applications. Many research studies on delivery drones have been active for several decades.
Mao Nishira, Satoshi Ito, Hiroki Nishikawa, Xiangbo Kong, Hiroyuki Tomiyama   +4 more
doaj   +1 more source

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

Data Collection Task Planning of a Fixed-Wing Unmanned Aerial Vehicle in Forest Fire Monitoring

IEEE Access, 2021
This article studies the data collection task planning for a fixed-wing unmanned aerial vehicle (UAV) in forest fire monitoring. Multiple wireless-based detection nodes (DNs) are distributed in high-risk areas of the forest to monitor the surrounding ...
Hao Zhang, Lihua Dou, Bin Xin, Jie Chen, Minggang Gan, Yulong Ding   +5 more
doaj   +1 more source

A formulation and a metaheuristic approach for the clustered vehicle routing problem with d‐relaxed priority rule

International Transactions in Operational Research, EarlyView.
Abstract This paper investigates an extension of the vehicle routing problem in which, in addition to minimizing the distance traveled, the sequencing of customer visits is subject to precedence constraints that impose visiting priorities among customers.
Eduardo dos Santos Teixeira, Silvio Alexandre de Araujo   +1 more
wiley   +1 more source

Evaluation of drone system for thinning operations–a case study in Sweden

International Transactions in Operational Research, EarlyView.
Abstract Thinning operations in forestry typically involve a two‐machine system (TMS) with a harvester and a forwarder. Its productivity in different forest conditions is well documented. To date, drones have been used for data collection and surveillance but not as an alternative to a TMS.
Mikael Rönnqvist, Patrik Flisberg, Gert Andersson, Petrus Jönsson   +3 more
wiley   +1 more source

DETERMINATION OF AN OPTIMAL ROUTE FOR FLIGHT OVER OF SPECIFIED POINTS OF A POTENTIALLY DANGEROUS OBJECT TERRITORY BY UAV FLEET

Радіоелектронні і комп'ютерні системи, 2019
Motivation. One of the tasks of nuclear power plants and other potentially dangerous objects monitoring employing unmanned aerial vehicles (UAV) is flying over specified points of the territory of such objects.
Герман Вікторович Фесенко, Вячеслав Сергійович Харченко   +1 more
doaj   +1 more source