Ravi Shankar Kumar
DST Systems
26 Papers
87 Citations
Ravi Shankar Kumar is an academic researcher from DST Systems. The author has contributed to research in topics: Fuzzy logic & Computer science. The author has an hindex of 12, co-authored 23 publications. Previous affiliations of Ravi Shankar Kumar include Indian Institute of Technology Kharagpur & National Institute of Technology Agartala.
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Papers
Cooperative sustainable supply chain for deteriorating item and imperfect production under different carbon emission regulations
TL;DR: A sustainable supply chain inventory management (SSCIM) model for a single-manufacturer and asingle-buyer’s integrated approach by considering item deterioration and imperfect production simultaneously is developed and fuzzy rule base approach is employed to predict the customers’ demand.
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A comprehensive study on force, temperature, mechanical properties and micro-structural characterizations in friction stir lap welding of dissimilar materials (AA6061-T6 & AISI304)
TL;DR: In this article, the effect of welding and rotational speeds on axial force, weld temperature and mechanical properties such as ultimate tensile strength and fractography has been investigated, and an interface metallurgical characterization has been carried out for various process parameters which indicated that the TMAZ is affected by the hooking effect.
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Characterizations of weld defects, intermetallic compounds and mechanical properties of friction stir lap welded dissimilar alloys
TL;DR: In this article, the effect of tilt angle and rotational speed on the characteristics of welding defects, intermetallic compounds, weld strength and micro-hardness in friction stir welding of thin sheets of AA6061-T6 and AISI304 was investigated.
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Designing multi-period supply chain network considering risk and emission: a multi-objective approach
Ravi Shankar Kumar,Alok K. Choudhary,Soudagar A. K. Irfan Babu,Sri Krishna Kumar,Adrijit Goswami,Manoj Kumar Tiwari +5 more
TL;DR: This research formulates a multi-objective problem (MOP) for supply chain network (SCN) design by incorporating the issues of social relationship, carbon emissions, and supply chain risks such as disruption and opportunism and results obtained evince the robust performance of the proposed MOP.
Mining RBAC roles under cardinality constraint
Ravi Shankar Kumar,Shamik Sural,Arobinda Gupta +2 more
- 17 Dec 2010
TL;DR: A heuristic bottom-up constrained role mining scheme that satisfies a cardinality condition that no role contains more than a given number of permissions and generates the least number of roles among all the algorithms studied is proposed.
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