RAIRO - Operations Research

Open Access

A multi-objective multi-agent optimization algorithm for the multi-skill resource-constrained project scheduling problem with transfer times p. 2093

Amir Hossein Hosseinian and Vahid Baradaran

Published online: 08 July 2021

DOI: https://doi.org/10.1051/ro/2021087

• Abstract
• PDF (4.124 MB)
• References

Open Access

On star family packing of graphs p. 2129

Mengya Li and Wensong Lin

Published online: 08 July 2021

DOI: https://doi.org/10.1051/ro/2021096

• Abstract
• PDF (306.4 KB)
• References

Open Access

Inertial normal S-type Tseng’s extragradient algorithm for solution of variational inequality problems p. 2165

D.R. Sahu and Amit Kumar Singh

Published online: 08 July 2021

DOI: https://doi.org/10.1051/ro/2021091

• Abstract
• PDF (433.8 KB)
• References

Open Access

Robust duality for generalized convex nonsmooth vector programs with uncertain data in constraints p. 2181

Izhar Ahmad, Arshpreet Kaur and Mahesh Kumar Sharma

Published online: 14 July 2021

DOI: https://doi.org/10.1051/ro/2021095

• Abstract
• PDF (210.4 KB)
• References

Open Access

A novel fuzzy non-radial data envelopment analysis: An application in transportation p. 2189

Deepak Mahla, Shivi Agarwal and Trilok Mathur

Published online: 14 July 2021

DOI: https://doi.org/10.1051/ro/2021097

• Abstract
• PDF (278.0 KB)
• References

Open Access

A model for the time dependent vehicle routing problem with time windows under traffic conditions with intelligent travel times p. 2203

Saeed Khanchehzarrin, Maral Shahmizad, Iraj Mahdavi, Nezam Mahdavi-Amiri and Peiman Ghasemi

Published online: 29 July 2021

DOI: https://doi.org/10.1051/ro/2021098

• Abstract
• PDF (544.3 KB)
• References

Open Access

Ergodicity and perturbation bounds for M_t/M_t/1 queue with balking, catastrophes, server failures and repairs p. 2223

Alexander Zeifman, Yacov Satin, Ivan Kovalev and Sherif I. Ammar

Published online: 29 July 2021

DOI: https://doi.org/10.1051/ro/2021101

• Abstract
• PDF (1.550 MB)
• References

Open Access

A conjecture on a continuous optimization model for the Golomb Ruler Problem p. 2241

Phil Duxbury, Carlile Lavor and Luiz Leduino de Salles-Neto

Published online: 29 July 2021

DOI: https://doi.org/10.1051/ro/2021103

• Abstract
• PDF (301.7 KB)
• References

Open Access

Low-cost heuristics for matrix bandwidth reduction combined with a Hill-Climbing strategy p. 2247

Sanderson L. Gonzaga de Oliveira and Libério M. Silva

Published online: 29 July 2021

DOI: https://doi.org/10.1051/ro/2021102

• Abstract
• PDF (421.4 KB)
• References

Open Access

A construction heuristic for finding an initial solution to a very large-scale capacitated vehicle routing problem p. 2265

Bapi Raju Vangipurapu and Rambabu Govada

Published online: 02 August 2021

DOI: https://doi.org/10.1051/ro/2021100

• Abstract
• PDF (2.695 MB)
• References

Free Access

Fuzzy reverse logistics inventory model of smart items with two warehouses of a retailer considering carbon emissions p. 2285

Subhash Kumar, Biswajit Sarkar and Ashok Kumar

Published online: 13 August 2021

DOI: https://doi.org/10.1051/ro/2021056

• Abstract
• PDF (1.448 MB)
• References

Open Access

Designing a new mathematical model based on ABC analysis for inventory control problem: A real case study p. 2309

Omid Abdolazimi, Davood Shishebori, Fariba Goodarzian, Peiman Ghasemi and Andrea Appolloni

Published online: 02 August 2021

DOI: https://doi.org/10.1051/ro/2021104

• Abstract
• PDF (1.514 MB)
• References

Open Access

Risk control mechanisms of third-party guarantee when financing newsvendor p. 2337

Jiazhou Huang, Qihui Lu, Xiangfeng Chen and Jizhou Zhan

Published online: 09 August 2021

DOI: https://doi.org/10.1051/ro/2021105

• Abstract
• PDF (771.5 KB)
• References

Open Access

Solutions to four open problems on quorum colorings of graphs p. 2385

Rafik Sahbi

Published online: 10 August 2021

DOI: https://doi.org/10.1051/ro/2021116

• Abstract
• PDF (403.3 KB)
• References

Open Access

Bi-level pricing and inventory strategies for perishable products in a competitive supply chain p. 2395

Naser Rajabi, Marzieh Mozafari and Ali Naimi-Sadigh

Published online: 16 August 2021

DOI: https://doi.org/10.1051/ro/2021106

• Abstract
• PDF (1.275 MB)
• References

Open Access

A novel approach for solving stochastic problems with multiple objective functions p. 2413

Ramzi Kasri and Fatima Bellahcene

Published online: 25 August 2021

DOI: https://doi.org/10.1051/ro/2021112

• Abstract
• PDF (401.9 KB)
• References

Open Access

Strategic behavior in a vacation queue with delayed observations p. 2423

Jingchuan Zhang, Chen Gang and Zaiming Liu

Published online: 25 August 2021

DOI: https://doi.org/10.1051/ro/2021110

• Abstract
• PDF (601.4 KB)
• References

Open Access

A single-consignor multi-consignee multi-item model with permissible payment delay, delayed shipment and variable lead time under consignment stock policy p. 2439

B. Karthick and R. Uthayakumar

Published online: 25 August 2021

DOI: https://doi.org/10.1051/ro/2021113

• Abstract
• PDF (640.9 KB)
• References

Open Access

Optimal reinsurance and investment strategies for an insurer under monotone mean-variance criterion p. 2469

Bohan Li and Junyi Guo

Published online: 25 August 2021

DOI: https://doi.org/10.1051/ro/2021114

• Abstract
• PDF (483.7 KB)
• References

Open Access

The integrated cutting and packing heterogeneous precast beams multiperiod production planning problem p. 2491

Kennedy Anderson Gumarães de Araújo, Tibérius de Oliveira e Bonates and Bruno de Athayde Prata

Published online: 25 August 2021

DOI: https://doi.org/10.1051/ro/2021107

• Abstract
• PDF (2.041 MB)
• References

Open Access

A fuzzy DEMATEL approach for evaluating the risk factors - (Case study: The instruction center of Iran’s national oil company) p. 2525

Mohammad-Bagher Fakhrzad, Mohammad-Reza Firozpour and Hasan Hosseini Nasab

Published online: 25 August 2021

DOI: https://doi.org/10.1051/ro/2021109

• Abstract
• PDF (480.8 KB)
• References

Open Access

Designing a supply chain network under a dynamic discounting-based credit payment program p. 2545

Yu-Chung Tsao, Mutia Setiawati, Thuy Linh Vu and Andi Sudiarso

Published online: 30 August 2021

DOI: https://doi.org/10.1051/ro/2021111

• Abstract
• PDF (1013 KB)
• References

Open Access

Solving multi-level multiobjective fractional programming problem with rough interval parameter in neutrosophic environment p. 2567

Firoz Ahmad, Shafiq Ahmad, Ahmed T. Soliman and Mali Abdollahian

Published online: 30 August 2021

DOI: https://doi.org/10.1051/ro/2021108

• Abstract
• PDF (447.1 KB)
• References

Open Access

Centralized resource allocation with the possibility of downsizing in two-stage network production systems p. 2583

Amir Hossein Yadolladi and Reza Kazemi Matin

Published online: 31 August 2021

DOI: https://doi.org/10.1051/ro/2021118

• Abstract
• PDF (667.1 KB)
• References