Papers by Madhusudanan Pillai V
Journal of Mines, Metals and Fuels, Dec 8, 2022
A supply chain consists of a network of organizations. Each organization in it acts as either cus... more A supply chain consists of a network of organizations. Each organization in it acts as either customer or supplier to others. Ordering and replenishment decisions of each organization or stage contribute to supply chain performance. A simulation study and experimentation were conducted in this study to determine the impact of ordering decisions on supply chain performance. The ordering decisions at each stage are taken by intuition for experimentation and are taken by inventory policies for simulation. Under customer demand distribution information sharing, the performance of a supply chain is evaluated and compared between those two conditions. A supply chain role play game software package is used to evaluate supply chain performance by intuition, and simulation is used to evaluate different inventory policies. Fixed order policy, Order Up-to Level (OUL), Modified OUL (MOUL), (r, Q) and (r, S) inventory policies are considered in this study. The performance measures used are the total supply chain inventory per period, bullwhip effect and supply chain fill rate. Grey Relational Analysis (GRA) is used to identify the best method to take decisions in supply chain. Results show that supply chain performance is best under MOUL policy. Based on the results of this study, supply chain members are encouraged to identify the best inventory policy and use that rather than making decisions based on intuition.
Journal of Facilities Management, 2022
Purpose The purpose of this article is to develop a bi-directional relaxed flexible bay structure... more Purpose The purpose of this article is to develop a bi-directional relaxed flexible bay structure (BRFBS) in the layout for the unequal area facility layout problems (UA-FLPs) and test the suitability of the proposed approach using literature data. Design/methodology/approach This research adopts a two-stage solution approach for UA-FLPs to form BRFBS in the layout. The solution to UA-FLPs is carried out in discrete space. The proposed heuristic method optimises the layout plan for minimising the material handling cost (MHC), and also, it indirectly optimises the space utilisation by reducing the empty space in the layout. The first stage of layout design assumes that all facilities are equal in size and uses quadratic assignment problem (QAP) model. QAP is solved with a simulated annealing heuristic method. In the second stage, a heuristic method is proposed to find the optimum width for each bay and the dimension for facilities. The proposed heuristic method is tested with numeric...
Lecture Notes in Mechanical Engineering, 2022
International journal of business and data analytics, 2019
Lecture notes in mechanical engineering, 2021
Proceedings of the International Conference on Industrial Engineering and Operations Management
Proceedings of the International Conference on Industrial Engineering and Operations Management
Journal of Global Operations and Strategic Sourcing
Purpose Blood cold chain (BCC) represents a system for preserving the blood during its journey fr... more Purpose Blood cold chain (BCC) represents a system for preserving the blood during its journey from the donor to the ultimate transfusion site. Existing BCCs have many drawbacks related to information transparency and information security. Secured and real-time information sharing in BCC can bring several benefits. The purpose of this paper is to summarise the issues in typical BCCs and to explore the scope of blockchain in the management of BCCs. Design/methodology/approach Issues in the existing BCCs are identified through a narrative review. To explain the potential of blockchain in mitigating these issues, a blockchain-based traceability solution is demonstrated with respect to a particular BCC scenario. The BCC management system discussed in this study makes use of the Ethereum blockchain’s smart contract feature and internet of things (IoT) technology. The smart contract is written in the solidity programming language and tested and validated using the Remix integrated develop...
European J. of Industrial Engineering
Lecture Notes in Mechanical Engineering, 2022
Applied Stochastic Models in Business and Industry
International Journal of Business and Data Analytics
2021 International Conference on Computational Performance Evaluation (ComPE)
Industrial Management & Data Systems
PurposeThis paper aims to introduce, conceptualize and demonstrate a software tool named “Blockch... more PurposeThis paper aims to introduce, conceptualize and demonstrate a software tool named “Blockchain-Enabled Beer Game” (BEBG) for familiarizing the application of blockchain in inventory management, one of the critical components of supply chain management.Design/methodology/approachThis paper follows a methodology of design-based research and develops a software tool in the form of a role-play simulation game. The proposed game adopts the theme of the traditional beer distribution game to establish a blockchain-enabled scenario for inventory management. A decentralized application (DApp) was prototyped on the Ethereum blockchain to demonstrate the tool.FindingsThe proposed software tool is effective in teaching and training the application of blockchain in inventory management. While interacting with BEBG, players witness how each inventory-related transaction gets secured with blockchain. A basic understanding of the fundamentals of blockchain is a prerequisite for using this too...
The decision of “how much to order” at each stage of the supply chain is a major task to minimize... more The decision of “how much to order” at each stage of the supply chain is a major task to minimize inventory costs. Managers tend to follow particular ordering policy seeking individual benefit which hampers the overall performance of the supply chain. Major findings from the literature show that, with the advent of machine learning and artificial intelligence, the trend in this area has been heading from simple base stock policy to intelligence-based learning algorithms to gain near-optimal solution. This paper initially focuses on formulating a multi-agent four-stage serial supply chain as reinforcement learning (RL) model for ordering management problem. In the final step, RL model for a single-agent supply chain is optimized using Q-learning algorithm. The results from the simulations show that the RL model with Q-learning algorithm is found to be better than Order-Up-To policy and 1–1 policy.
Theoretical Issues in Ergonomics Science, 2022
Technology-Enabled Work-System Design, 2022
Lecture Notes in Mechanical Engineering, 2020
This article proposes an application of Simulated Annealing algorithm for Flexible Bay Structure ... more This article proposes an application of Simulated Annealing algorithm for Flexible Bay Structure (SA-FBS) based Unequal Area Facility Layout Problems (UA-FLPs). Initially, MILP model of UA-FLPs with FBS is solved using LINGO software, due to complexity of the model, LINGO solver is not giving the optimal solution in a reasonable time. Then, the proposed SA-FBS is developed and applied to test the UA-FLPs reported in the literature. SA-FBS method has either given the same or better solution as compared to the solution reported in the literature. The proposed SA-FBS computational timings are competitive as compared to other meta-heuristics timings reported in the literature.
Journal of Facilities Management, 2021
Purpose The purpose of this paper is to review, evaluate and classify the academic research that ... more Purpose The purpose of this paper is to review, evaluate and classify the academic research that has been published in facility layout problems (FLPs) and to analyse how researches and practices on FLPs are. Design/methodology/approach The review is based on 166 papers published from 1953 to 2021 in international peer-reviewed journals. The literature review on FLPs is presented under broader headings of discrete space and continuous space FLPs. The important formulations of FLPs under static and dynamic environments represented in the discrete and continuous space are presented. The articles reported in the literature on various representations of facilities for the continuous space Unequal Area Facility Layout Problems (UA-FLPs) are summarized. Discussed and commented on adaptive and robust approaches for dynamic environment FLPs. Highlighted the application of meta-heuristic solution methods for FLPs of a larger size. Findings It is found that most of the earlier research adopted...
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Papers by Madhusudanan Pillai V