Sankar Kumar Roy
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View article: Pythagorean fuzzy EOQ model with stock- and hybrid price-dependent demand under preservation technology and advance payment
Pythagorean fuzzy EOQ model with stock- and hybrid price-dependent demand under preservation technology and advance payment Open
This research implements the impact of an advance payment policy on inventory management while incorporating preservation technology to mitigate product deterioration. In a real scenario, the sum of the membership and non-membership degree…
View article: Hesitant fuzzy linguistic matrix game and its application in MCDM problem
Hesitant fuzzy linguistic matrix game and its application in MCDM problem Open
. This study focuses on how to establish a connection between game theory and decision making under an uncertain environment. To tackle this uncertainty, an expansion of the hesitant fuzzy set and linguistic term set, i.e., the hesitant fu…
View article: Gaussian type-2 fuzzy cooperative game based on reduction method: An application to multi-drug resistance problem
Gaussian type-2 fuzzy cooperative game based on reduction method: An application to multi-drug resistance problem Open
Many developments of fuzzy sets have been suggested to accomplish uncertain information in real-world problems. But, in the greatest cases, fuzzy sets in two- dimensions or type-1 fuzzy sets are measured. Incomplete information can indeed …
View article: Fractional programming for Stackelberg game under type-2 fuzzy environment
Fractional programming for Stackelberg game under type-2 fuzzy environment Open
This study intends to present a Stackelberg game model for design of the fractional type-2 fuzzy programming. In achieving this aspiration, we develop a probabilistic fuzzy multi-objective fractional linear programming where the entire par…
View article: Intraguild predation in a tri-trophic age-structured fishery model
Intraguild predation in a tri-trophic age-structured fishery model Open
A common and widespread event in ecosystems is intraguild predation, where both the top predator and intermediate predator compete with each other for the same prey. Also, the top predator hunts and consumes the intermediate predator whene…
View article: A sustainable inventory optimisation considering imperfect production under uncertain environment
A sustainable inventory optimisation considering imperfect production under uncertain environment Open
This study enhances economic production quantity model by incorporating repairable defective products within an uncertain environment. To reflect practical scenarios, demand and repair rates are modelled as exponential functions of time. T…
View article: An integrated vendor-buyer model with sustainability and remanufacturing of returned product
An integrated vendor-buyer model with sustainability and remanufacturing of returned product Open
With passing time, carbon emission reduction has been a paramount job for human kind. Achieving a delicate balance between carbon emission reduction and the combustion of fossil fuels is essential. This balance is vital as carbon emissions…
View article: Selection of sustainable food suppliers using the Pythagorean fuzzy CRITIC-MARCOS method
Selection of sustainable food suppliers using the Pythagorean fuzzy CRITIC-MARCOS method Open
Sustainable food supplier selection (SFSS) can be handled as an uncertain decision-making issue. The Pythagorean fuzzy set (PFS), a type of non-standard fuzzy set, offers an expanded description space for articulating fuzzy and uncertain d…
View article: S J S -metric spaces: a survey
S J S -metric spaces: a survey Open
The aim of this survey article, is to present in one place the recently published results on S JS -metric spaces, their generalizations and applications.We start with S JS -metric spaces and study their properties.Then we deal with abstrac…
View article: Profit maximization multi-item Just-in-Time solid transportation problem with budget constraints based on carbon emission
Profit maximization multi-item Just-in-Time solid transportation problem with budget constraints based on carbon emission Open
This study combines multi-item Just-in-Time solid transportation problems, budget constraints, and carbon emissions with potential profit maximization. Carbon emissions and other greenhouse gas emissions from various modes of transportatio…
View article: Solving matrix game using rough interval payoffs
Solving matrix game using rough interval payoffs Open
In this paper, we conduct an analysis of a matrix game using rough interval payoffs, which we refer to as the rough interval matrix game (RIMG). We employ three methods to address the problem at hand: linear programming, graphical method, …
View article: Multi-attribute group decision-making for solid waste management using interval-valued <i>q</i>-rung orthopair fuzzy COPRAS
Multi-attribute group decision-making for solid waste management using interval-valued <i>q</i>-rung orthopair fuzzy COPRAS Open
In this paper, the COPRAS (Complex Proportional Assessment) method is extended for interval-valued q -rung orthopair fuzzy numbers (IV q -ROFNs) to solve multi-attribute group decision-making (MAGDM) problems. A novel distance measure for …
View article: Sustainable inventory model with environmental impact for non-instantaneous deteriorating items with composite demand
Sustainable inventory model with environmental impact for non-instantaneous deteriorating items with composite demand Open
Global warming and climate change become a sensitive issue worldwide, and many countries try to control the CO 2 emissions by investigating in many projects. This study proposes a sustainable inventory model to reduce carbon emission. It i…
View article: New approach to solve fuzzy multi-objective multi-item solid transportation problem
New approach to solve fuzzy multi-objective multi-item solid transportation problem Open
This paper explores the study of Multi-Objective Multi-item Solid Transportation Problem (MMSTP) under the fuzzy environment. Realizing the impact of real-life situations, here we consider MMSTP with parameters, e.g. , transportation cost,…
View article: Effects of multiple prepayments and green investment on an EPQ model
Effects of multiple prepayments and green investment on an EPQ model Open
In this paper, an Economic Production Quantity (EPQ) model is formulated with an investment in green operations and deterioration. In the proposed model, the demand rate depends on selling-price as well as green concerning level of the pro…
View article: Solving the multi-modal transportation problem <i>via</i> the rough interval approach
Solving the multi-modal transportation problem <i>via</i> the rough interval approach Open
This research studies a transportation problem to minimize total transportation cost under the rough interval approximation by considering the multi-modal transport framework, referred to here as the rough Multi-Modal Transportation Proble…
View article: Optimum Intervention in Transportation Networks Using Multimodal System under Fuzzy Stochastic Environment
Optimum Intervention in Transportation Networks Using Multimodal System under Fuzzy Stochastic Environment Open
Multimodal transport refers to the transportation of goods under a single contract but performed with at least two different modes of transport. This research designs a new method for solving the Transportation Problem (TP) by introducing …
View article: Impacts of green and preservation technology investments on a sustainable EPQ model during COVID-19 pandemic
Impacts of green and preservation technology investments on a sustainable EPQ model during COVID-19 pandemic Open
Carbon and Sulfur dioxides emissions are the key issues of global warming that affects on human health. Emissions cap- and -trade policy is a key mechanism implemented in several countries to reduce the emissions. Nowadays, public gatherin…
View article: Carbon mechanism on sustainable multi-objective solid transportation problem for waste management in Pythagorean hesitant fuzzy environment
Carbon mechanism on sustainable multi-objective solid transportation problem for waste management in Pythagorean hesitant fuzzy environment Open
Waste management involved in various fields of global ecosystem that provides several positive effects for green environment and sustainable development. We devise a multi-objective solid transportation model of waste management problem in…
View article: The effect of rebate value and selling price-dependent demand for a four-level production manufacturing system
The effect of rebate value and selling price-dependent demand for a four-level production manufacturing system Open
Price rebate is only permitted when purchases made by the customer exceed a predefined limit and they later buy other items from the purchaser. There are various forms of rebate used by production companies. This study provides a deteriora…
View article: Fuzzy Matrix Game: A Fast Approach using Artificial Hybrid Neural-Net Logic-Gate Switching Circuit
Fuzzy Matrix Game: A Fast Approach using Artificial Hybrid Neural-Net Logic-Gate Switching Circuit Open
Introducing neuro -fuzzy concept in decision making problems, makes a new way in artificial intelligence and expert systems. Sometimes, neural networks are used to optimize certain performances. In general, knowledge acquisition becomes di…
View article: Two-person game with hesitant fuzzy payoff: An application in MADM
Two-person game with hesitant fuzzy payoff: An application in MADM Open
Hesitant Fuzzy Set (HFS) permits the membership function having a collection of probable values which are more effective for modelling the real-life problems. Multiple Attribute Decision Making (MADM) process apparently assesses multiple c…
View article: Multi-Product Multi Echelon Measurements of Perishable Supply Chain: Fuzzy Non-Linear Programming Approach
Multi-Product Multi Echelon Measurements of Perishable Supply Chain: Fuzzy Non-Linear Programming Approach Open
The perishable milk products industry has to deal with multiple pressures such as demand forecasting, price fluctuations, lead time, order batching, and inflated orders along with difficulties of climatic and traffic conditions, storage ar…
View article: Fixed-Charge Solid Transportation Problem with Budget Constraints Based on Carbon Emission in Neutrosophic Environment
Fixed-Charge Solid Transportation Problem with Budget Constraints Based on Carbon Emission in Neutrosophic Environment Open
This paper is to integrate among solid transportation problem, budget constraints and carbon emission with probable maximum profit. The limits of air pollution and climate variation are solely dependent by exerting CO 2 gas and rest greenh…