Fuzzy sets and their variants
THE FUZZY SUBGROUPS FOR THE NILPOTENT ( p-GROUP) OF (D2^3 X C2^m) FOR m > 3

SUNDAY ADESINA ADEBISI; MICHAEL ENIOLUWAFE; MIKE OGIUGO

Articles in Press, Accepted Manuscript, Available Online from 19 June 2022

http://dx.doi.org/10.22105/jfea.2022.337181.1215

Abstract
  Abstract. This theory of fuzzy sets has a wide range of applications, one of which is that of fuzzy groups . The Fuzzy sets were introduced by Zadeh. Even though, the story of Fuzzy logic started much earlier, it was specially designed mathematically to represent uncertainty and vagueness. It was also, ...  Read More

Fuzzy sets and their variants
Prediction of human behavior with TOPSIS

Taraneh Javanbakht; Shivanjan Chakravorty

Volume 3, Issue 2 , June 2022, , Pages 109-125

http://dx.doi.org/10.22105/jfea.2022.326185.1197

Abstract
  The present paper proposes a new application of the prediction of human behavior using TOPSIS as an appropriate tool for data optimization. Our hypothesis was that the analysis of the candidates with this method was influenced by the change of their behavior. We found that the behavior change could occur ...  Read More

Fuzzy sets and their variants
A novel method for solving multi- objective linear fractional programming problem under uncertainty

Ibrahim Mohamed Mekawy

Volume 3, Issue 2 , June 2022, , Pages 169-176

http://dx.doi.org/10.22105/jfea.2022.331180.1206

Abstract
  This paper deals with a multi-objective linear fractional programming problem in fuzzy environment. The problem is considered by introducing all the parameters as piecewise quadratic fuzzy numbers. Through the use of the associated real number of the close interval approximation and the order relation ...  Read More

Fuzzy sets and their variants
Machine efficiency measurement in industry 4.0 using fuzzy data envelopment analysis

Irem Ucal Sari; Umut Ak

Volume 3, Issue 2 , June 2022

http://dx.doi.org/10.22105/jfea.2022.326644.1199

Abstract
  Industry 4.0 implementations are competitive tools of recent production systems in which complex computerized systems are employed. Efficiency of these systems is generally measured by Data Envelopment Analysis (DEA) under certainty. However, the required data in modelling the system involve high degree ...  Read More

Fuzzy sets and their variants
A fuzzy multi objective inventory model of demand dependent deterioration including lead time

Satya Kumar Das

Volume 3, Issue 1 , March 2022, , Pages 1-18

http://dx.doi.org/10.22105/jfea.2021.306498.1163

Abstract
  In this article, we have developed a deteriorated multi-item inventory model in a fuzzy environment. Here the demand rate is constant. Production cost and set-up cost are the most vital issue in the inventory system of the market world. Here production cost and set-up- cost are continuous functions of ...  Read More

Fuzzy sets and their variants
Application of the fuzzy inference system to evaluate the quality of air textured warp yarn

Umutgül Bulut; Eren Ozceylan

Volume 3, Issue 1 , March 2022, , Pages 31-44

http://dx.doi.org/10.22105/jfea.2021.316204.1174

Abstract
  It has become one of the indispensable conditions to continuously improve the quality and achieve the quality standards in order to adapt to the increasingly competitive environment in the textile industry. However, the textile production process like many other industrial processes involves the interaction ...  Read More

Fuzzy sets and their variants
New view of fuzzy aggregations. Part III: extensions of the FPOWA operator in the problem of political management

Gia Sirbiladze

Volume 2, Issue 4 , December 2021, , Pages 321-333

http://dx.doi.org/10.22105/jfea.2021.275097.1082

Abstract
  The Ordered Weighted Averaging (OWA) operator was introduced by Yager [34] to provide a method for aggregating inputs that lie between the max and min operators. In this article we continue to present some extensions of OWA-type aggregation operators. Several variants of the generalizations of the ...  Read More

Fuzzy sets and their variants
A decision-making system for Corona prognosis using fuzzy inference system

Shaveta Arora; Renu Vadhera; Bharti Chugh

Volume 2, Issue 4 , December 2021, , Pages 344-354

http://dx.doi.org/10.22105/jfea.2021.296652.1158

Abstract
  COVID-19, an epidemic disease, has challenged human lives all over the world. Governments and scientific communities are trying their level best to help the masses. This disease which is caused by corona virus majorly attacks the upper respiratory system rendering the human immunity incapacitated and, ...  Read More

Fuzzy sets and their variants
A novel mathematical approach for fuzzy multi-period multi-objective portfolio optimization problem under uncertain environment and practical constraints

Pejman Peykani; Mojtaba Nouri; Farzad Eshghi; Mohammad Khamechian; Hamed Farrokhi-Asl

Volume 2, Issue 3 , September 2021, , Pages 191-203

http://dx.doi.org/10.22105/jfea.2021.287429.1150

Abstract
  Investment Portfolio Optimization (IPO) is one of the most important problems in the financial area. Also, one of the most important features of financial markets is their embedded uncertainty. Thus, it is essential to propose a novel IPO model that can be employed in the presence of uncertain data. ...  Read More

Fuzzy sets and their variants
A new algorithm for fuzzy transportation problems with trapezoidal fuzzy numbers under fuzzy circumstances

Ladji Kane; Moctar Diakite; Souleymane Kane; Hawa Bado; Moussa Konate; Koura Traore

Volume 2, Issue 3 , September 2021, , Pages 204-225

http://dx.doi.org/10.22105/jfea.2021.287198.1148

Abstract
  Transportation problem is an important network structured linear programming problem that arises in several contexts and has deservedly received a great deal of attention in the literature. The central concept in this problem is to find the least total transportation cost of a commodity in order to satisfy ...  Read More

Fuzzy sets and their variants
Regular T_0 ‐type Separations in Fuzzy Topological Spaces in the Sense of Quasi‐coincidence

Gurusamy Saravanakumar; S. Tamilselvan; A. Vadivel

Volume 2, Issue 2 , June 2021, , Pages 120-129

http://dx.doi.org/10.22105/jfea.2021.275958.1085

Abstract
  In this paper, we introduce and study three notions of  property in fuzzy topological spaces using quasi-coincidence sense, and we relate to other such notions. Then, we show that all these notions satisfy good extension property. These concepts also satisfy hereditary, productive and projective ...  Read More

Fuzzy sets and their variants
New view of fuzzy aggregations. part I: general information structure for decision-making models

Gia Sirbiladze

Volume 2, Issue 2 , June 2021, , Pages 130-143

http://dx.doi.org/10.22105/jfea.2021.275084.1080

Abstract
  The Ordered Weighted Averaging (OWA) operator was introduced by Yager [57] to provide a method for aggregating inputs that lie between the max and min operators. In this article two variants of probabilistic extensions the OWA operator-POWA and FPOWA (introduced by Merigo [26] and [27]) are considered ...  Read More

Fuzzy sets and their variants
Well drilling fuzzy risk assessment using fuzzy FMEA and fuzzy TOPSIS

Mazdak Khodadadi-Karimvand; Hadi Shirouyehzad

Volume 2, Issue 2 , June 2021, , Pages 144-155

http://dx.doi.org/10.22105/jfea.2021.275955.1086

Abstract
  One of the most important issues that organizations have to deal with is the timely identification and detection of risk factors aimed at preventing incidents. Managers’ and engineers’ tendency towards minimizing risk factors in a service, process or design system has obliged them to analyze ...  Read More

Fuzzy sets and their variants
Application of fuzzy algebraic model to statistical analysis of neuro-psychopathology data

Semiu Ayinla Alayande; Ezekiel Akande; Amanze Egere

Volume 2, Issue 2 , June 2021, , Pages 156-162

http://dx.doi.org/10.22105/jfea.2021.279105.1089

Abstract
  The purpose of this paper is to describe and present applications of fuzzy logic in analysis of certain neuro-psychopathological symptoms. These symptoms have been linked to conditions relating to occupational hazards. Our method of data analysis which is based on Hamacher operation on picture fuzzy ...  Read More

Fuzzy sets and their variants
Evaluation and selection of supplier in supply chain with fuzzy analytical network process approach

Mohammad Ghasempoor Anaraki; Dmitriy S. Vladislav; Mahdi Karbasian; Natalja Osintsev; Victoria Nozick

Volume 2, Issue 1 , March 2021, , Pages 69-88

http://dx.doi.org/10.22105/jfea.2021.274734.1078

Abstract
  One of the most important issues concerning the designing a supply chain is selecting the supplier. Selecting proper suppliers is one of the most crucial activities of an organization towards the gradual improvement and a promotion in performance. This intricacy is because suppliers fulfil a part of ...  Read More

Fuzzy sets and their variants
A simplified new approach for solving fully fuzzy transportation problems with involving triangular fuzzy numbers

Ladji Kane; Hamala Sidibe; Souleymane Kane; Hawa Bado; Moussa Konate; Daouda Diawara; Lassina Diabate

Volume 2, Issue 1 , March 2021, , Pages 89-105

http://dx.doi.org/10.22105/jfea.2021.275280.1084

Abstract
  Transportation Problem (TP) is an important network structured linear programming problem that arises in several contexts and has deservedly received a great deal of attention in the literature. The central concept in this problem is to find the least total transportation cost of a commodity in order ...  Read More

Fuzzy sets and their variants
Fuzzy programming approach to Bi-level linear programming problems

Eshetu Dadi Gurmu; Tagay Takele Fikadu

Volume 1, Issue 4 , December 2020, , Pages 252-271

http://dx.doi.org/10.22105/jfea.2020.262326.1069

Abstract
  In this study, we discussed a fuzzy programming approach to bi-level linear programming problems and their application. Bi-level linear programming is characterized as mathematical programming to solve decentralized problems with two decision-makers in the hierarchal organization. They become more important ...  Read More

Fuzzy sets and their variants
An overview of data envelopment analysis models in fuzzy stochastic environments

Fatemeh Zahra Montazeri

Volume 1, Issue 4 , December 2020, , Pages 272-278

http://dx.doi.org/10.22105/jfea.2020.258330.1030

Abstract
  One of the appropriate and efficient tools in the field of productivity measurement and evaluation is data envelopment analysis, which is used as a non-parametric method to calculate the efficiency of decision-making units. Today, the use of data envelopment analysis technique is expanding rapidly and ...  Read More

Fuzzy sets and their variants
An overview of portfolio optimization using fuzzy data envelopment analysis models

Mehrdad Rasoulzadeh; Mohammad Fallah

Volume 1, Issue 3 , September 2020, , Pages 180-188

http://dx.doi.org/10.22105/jfea.2020.255034.1027

Abstract
  A combination of projects, assets, programs, and other components put together in a set is called a portfolio. Arranging these components helps to facilitate the efficient management of the set and subsequently leads to achieving the strategic goals. Generally, the components of the portfolio are quantifiable ...  Read More

Fuzzy sets and their variants
Assessment and linear programming under fuzzy conditions

Michael Voskoglou

Volume 1, Issue 3 , September 2020, , Pages 189-205

http://dx.doi.org/10.22105/jfea.2020.253436.1024

Abstract
  The present work focuses on two directions. First, a new fuzzy method using triangular / trapezoidal fuzzy numbers as tools is developed for evaluating a group’s mean performance, when qualitative grades instead of numerical scores are used for assessing its members’ individual performance. ...  Read More

Fuzzy sets and their variants
Multi item inventory model include lead time with demand dependent production cost and set-up-cost in fuzzy environment

Satya Kumar Das

Volume 1, Issue 3 , September 2020, , Pages 227-243

http://dx.doi.org/10.22105/jfea.2020.254081.1025

Abstract
  In this paper, we have developed the multi-item inventory model in the fuzzy environment. Here we considered the demand rate is constant and production cost is dependent on the demand rate. Set-up- cost is dependent on average inventory level as well as demand. Lead time crashing cost is considered the ...  Read More

Fuzzy sets and their variants
Analyzing the barriers of organizational transformation by using fuzzy SWARA

Iman Ghasemian Sahebi; Alireza Arab; Seyed Pendar Toufighi

Volume 1, Issue 2 , June 2020, , Pages 84-97

http://dx.doi.org/10.22105/jfea.2020.249191.1010

Abstract
  The crucial role of bureaucracy in the economic, political, socio-cultural and political structures, and its impact in achieving the goals of organization is so important that in order to achieve the development, change directions consists of purifying and modernization of the administrative system in ...  Read More

Fuzzy sets and their variants
Prediction of Pakistan super league-2020 using TOPSIS and fuzzy TOPSIS methods

Muhammad Naveed Jafar; Faizullah Khan; Amir Naveed

Volume 1, Issue 2 , June 2020, , Pages 98-107

http://dx.doi.org/10.22105/jfea.2020.249363.1011

Abstract
  We lived in uncertain word and prediction in this uncertain word is a major issue. Prediction in cricket is very complex because there are many factors which are effecting on results. Weather, pitch, Conditions, Home grounds are some of these factors. In this article it is aimed to predict the results ...  Read More

Fuzzy sets and their variants
Application of fuzzy logic in portfolio management: evidence from Iranian researches

Meysam Kaviani; Seyed Fakhreddin Fakhrehosseini

Volume 1, Issue 2 , June 2020, , Pages 108-111

http://dx.doi.org/10.22105/jfea.2020.249372.1012

Abstract
  Over the past decades, financial researchers have proposed different methods in portfolio selection, so that, Markwotiz [1] introduced risk and return criteria for a portfolio selection. Since it is difficult how to select an adequate stock portfolio, fuzzy models have been able to help researchers by ...  Read More

Fuzzy sets and their variants
Computer and fuzzy theory application: review in home appliances

Tim Chen; Ilnar Karimov; Jcy Chen; Alexandv Constantinovitc

Volume 1, Issue 2 , June 2020, , Pages 133-138

http://dx.doi.org/10.22105/jfea.2020.251719.1019

Abstract
  Clays have a tendency to this article first introduces the basic concepts of fuzzy theory, including comparisons between fuzzy sets and traditional explicit sets, fuzzy sets basic operations such as the membership function of the set and the colloquial variable, the intersection and union of the fuzzy ...  Read More