RAM KUMAR P.N

Significant Publications

Rabin K Jana, Indranil Ghosh & P N Ram Kumar (2023) "An explainable AI-enabled granular ensemble machine learning framework to demystify fertilizer price movements," Accepted for publication in the Journal of the Operational Research Society. DOI: https://doi.org/10.1080/01605682.2023.2260908

C.R Vishnu, E.N. Anilkumar, R. Sridharan & P N Ram Kumar (2023) "Statistical characterization of managerial risk factors: a case of state-run hospitals in India", OPSEARCH, Vol. 60, pp. 812 - 834. 

Kunpeng Li, Peiyang He & P N Ram Kumar (2023) "A column generation based approach for an integrated production and transportation scheduling problem with dual delivery modes", International Journal of Production Research, Vol. 61(16), pp. 5483 - 5501.

Jie Li, Kunpeng Li, Qiannan Tian & P N Ram Kumar (2022) "An Improved Column Generation Algorithm for the Disrupted Flight Recovery Problem with Discrete Flight Duration Control and Aircraft Assignment Constraints", Computers and Industrial Engineering, Vol.174

Alan J. Maniamkot, P N Ram Kumar, Mohan Krishnamoorthy, Hamid Mokhtar and Sridharan Rajagopalan (2022) "Hybridised ant colony optimization for convoy movement problem", Annals of Operations Research, Vol. 315, pp. 847 - 866.

Prashant Premkumar and P N Ram Kumar (2022) "Locomotive Assignment Problem - Integrating the Strategic, Tactical and Operational Level Aspects", Annals of Operations Research, Vol. 315, pp. 867 - 898.

C. R. Vishnu, Sangeeth P. Das, R. Sridharan, M N Anish, and P N Ram Kumar “Reliable and Flexible Supplier Selection Problem: A Genetic Algorithm Inspired Simulation Approach”, Accepted for publication in International Journal of Logistics Systems & Management.

E.N. Anilkumar, R. Sridharan, P N Ram Kumar (2022) "Prioritisation of barriers in implementing sustainable practices in public healthcare sector: an integrated DEMATEL, ISM and PROMETHEE model", International Journal of Services and Operations Management, Vol. 41 (4), pp. 486 – 513.

Pei Yang, Kunpeng Li and P N Ram Kumar (2022) “An enhanced branch-and-price algorithm for the integrated production and transportation scheduling problem”, International Journal of Production Research, Vol.60 (6), pp.1874 – 1889.

Wenli Li, Kunpeng Li, P N Ram Kumar and Qiannan Tian (2021) 'Simultaneous product and service delivery vehicle routing problem with time windows and order release dates', Applied Mathematical Modelling, Vol. 89, pp.669 - 687.

C. R. Vishnu, Sangeeth P. Das, R. Sridharan, P N Ram Kumar and N. S. Narahari (2021) “Development of a reliable and flexible supply chain network design model: a genetic algorithm based approach”, International Journal of Production Research, Vol.59 (20), pp. 6185 – 6209.

Wenli Li, Yong Wu, P N Ram Kumar & Kunpeng Li (2020), 'Multi-trip vehicle routing problem with order release time', Engineering Optimization, Vol. 52(8), pp.1279-1294.

Hamid Mokhtar, Mohan Krishnamoorthy, Niraj Ramesh Dayama, P.N. Ram Kumar (2020), 'New approaches for solving the convoy movement problem', Transportation Research Part E: Logistics and Transportation Review, Vol.133, pp. 101802

V.Anjana, R.Sridharan and P N Ram Kumar (2020), 'Metaheuristics for solving a multi-objective flow shop scheduling problem with sequence-dependent setup times', Journal of Scheduling, Vol. 23, pp.49-69.

C.R. Vishnu, R. Sridharan, Angappa Gunasekaran and P.N. Ram Kumar (2019), Strategic capabilities for managing risks in supply chains: current state and research futurities, Journal of Advances in Management Research, Vol. 17(2), pp. 173 - 211.

C.R.Vishnu, R. Sridharan, P.N.Ram Kumar (2019) 'Supply chain risk management: models and methods', International Journal of Management and Decision Making, Vol.18(1), 31 - 75.

Prashant Premkumar and P N Ram Kumar (2019), 'Literature Review of Locomotive Assignment Problem from service operations perspective: The Case of Indian Railways', IIM Kozhikode Society & Management Review, Vol. 8(1), pp. 74 - 86.

Anjana V, R. Sridharan, P.N. Ram Kumar (2019) 'Hybrid genetic algorithm for multi-objective flow shop scheduling problem with sequence dependent setup time: Parameter design using Taguchi's robust design method', International Journal of Process Management and Benchmarking, Vol.9(4), pp.419-446

Anilkumar Elavanakattu Narayanan, Rajagopalan Sridharan, P.N. Ram Kumar (2019) 'Analyzing the interactions among barriers of sustainable supply chain management practices: A case study', Journal of Manufacturing Technology Management, Vol. 30 (6), pp.937 - 971.

C.R. Vishnu, R. Sridharan, P.N. Ram Kumar (2019) 'Supply chain risk inter-relationships and mitigation in Indian scenario: an ISM-AHP integrated approach', International Journal of Logistics Systems and Management, Vol. 32 (3-4), pp. 548 - 578.

John Sajan, R. Sridharan, P.N. Ram Kumar, M. Krishnamoorthy (2018) 'Multi-Period Reverse Logistics Network Design for Used Refrigerators', Applied Mathematical Modeling, Vol.54, 311 - 331.

John Sajan, R. Sridharan and P.N. Ram Kumar (2018) 'Reverse logistics network design: A case of mobile phones and digital cameras', International Journal of Advanced Manufacturing Technology, Vol. 94, pp:615 - 631.

Sajan John, R. Sridharan and P N Ram Kumar (2017) 'Multi-period reverse logistics network design with emission cost', International Journal of Logistics Management, Vol 28 (1), 127 - 149.

P.N. Ram Kumar, A.I. Sivakumar (2013) 'Simulated Annealing based algorithm for the Capacitated Hub Routing Problem', International Journal of Services and Operations Management, Vol 14(2), 221 - 235.

P.N. Ram Kumar and T.T. Narendran (2011) 'On the usage of Lagrangean Relaxation for the Convoy Movement Problem', Journal of the Operational Research Society, Vol 62, 722 -728.

P.N. Ram Kumar, P.K.Rai, A.I. Sivakumar, Peeyush Mehta and Ashok Mittal (2011) 'Impact of aggregating supplies from a single supplier to a cluster of producers: opportunities for 3PL service providers', International Journal of Operational Research, Vol 12(2), 192 - 206.

P.N. Ram Kumar, A.I. Sivakumar (2011) 'On solving the capacitated hub routing problem', International Journal of Logistics Systems and Management, Vol 8(4), 392 - 402.

P.N. Ram Kumar and T.T. Narendran (2010) 'Convoy Movement Problem - An Optimization perspective', published in Innovations in Defense Support Systems - 1: Studies in Computational Intelligence, Vol. 304, 79-93, Springer Verlag, Germany.

P.N. Ram Kumar, T.T. Narendran, and A.I. Sivakumar (2009) 'Bi-criteria Convoy Movement Problem', Journal of Defense Modeling and Simulation, Vol 6 (3), 151 - 165.

P.N. Ram Kumar and T.T. Narendran (2009) 'Heuristics for Convoy Movement Problem', Strategic Analysis, Vol 33 (4), 590 - 606

P.N. Ram Kumar and T.T. Narendran (2009) 'A mathematical approach for variable speed Convoy Movement Problem', Defense and Security Analysis, Vol 25 (2), 137 - 155.

P.N. Ram Kumar and T.T. Narendran (2008) 'Integer Programming Formulation for Convoy Movement Problem', International Journal of Intelligent Defence Support Systems, Vol 1 (3), 177 - 188.

On modeling the step fixed-charge transportation problem , Working Paper, 2013

Research Areas

Transportation network optimization, Military Logistics, Vehicle routing problems and Scheduling