Fuzzy sets and their variants
A note on somewhat fuzzy continuity

Zanyar A. Ameen

Articles in Press, Accepted Manuscript, Available Online from 22 September 2022

https://doi.org/10.22105/jfea.2022.356442.1230

Abstract
  Thangaraj and Balasubramanian introduced the so-called somewhat fuzzy semicontinuous and somewhat fuzzy semiopen functions. Two years later, the same authors defined two other types of functions called somewhat fuzzy continuous and somewhat fuzzy open without indicating connections between them. At first ...  Read More

Fuzzy sets and their variants
Fuzzy simple linear regression using Gaussian membership functions minimization problem

Besma Belhadj

Volume 3, Issue 4 , October 2022, , Pages 279-289

https://doi.org/10.22105/jfea.2022.345298.1222

Abstract
  Under the additional assumption that the errors are normally distributed, the Ordinary Least Squares (OLS) method is the maximum likelihood estimator. In this paper, we propose, for a simple regression, an estimation method alternative to the OLS method based on a so-called Gaussian membership function, ...  Read More

Fuzzy sets and their variants
Fuzzy cognitive study on post pandemic impact on occupational shift in rural areas

Nivetha Martin; A.Velankanni Ananth; P.K. Sharmila; T. Priya

Volume 3, Issue 4 , October 2022, , Pages 290-301

https://doi.org/10.22105/jfea.2022.352027.1225

Abstract
  The pandemic has created a wide range of impacts on the livelihood of the people especially in their occupation and income generation. The horrific pandemic impacts have caused the populace to switch their occupations for the sake of their livelihood sustainability. This research works aims in determining ...  Read More

Fuzzy sets and their variants
Basic fuzzy arithmetic operations using α–cut for the gaussian membership function

Leonce Leandry; Innocent Sosoma; David Koloseni

Volume 3, Issue 4 , October 2022, , Pages 337-348

https://doi.org/10.22105/jfea.2022.339888.1218

Abstract
  Currently fuzzy set theory has a wide range to model real life problems with incomplete or vague information which perfectly suits the reality and its application is theatrically increasing. This work explored the basic fuzzy operations with the Gaussian Membership using the α-cut method. As it ...  Read More

Fuzzy sets and their variants
Using a combined fuzzy-AHP and topsis decision model for selecting the best firewall alternative

Ceren Cubukcu; Cem Cantekin

Volume 3, Issue 3 , July 2022, , Pages 192-200

https://doi.org/10.22105/jfea.2021.313606.1167

Abstract
  Covid-19 pandemic forced all the world to make significant changes in their daily routines. As a result, internet and digital technologies started to be used more actively by individuals and businesses. Due to this digitalization, everyone is more open to digital threats. In order to provide the security ...  Read More

Fuzzy sets and their variants
Evaluation of key impression of resilient supply chain based on artificial intelligence of things (AIoT)

Alireza Aliahmadi; Hamed Nozari; Javid Ghahremani-Nahr; Agnieszka Szmelter-Jarosz

Volume 3, Issue 3 , July 2022, , Pages 201-211

https://doi.org/10.22105/jfea.2022.345008.1221

Abstract
  In recent years, the high complexity of the business environment, dynamism and environmental change, uncertainty and concepts such as globalization and increasing competition of organizations in the national and international arena have caused many changes in the equations governing the supply chain. ...  Read More

Fuzzy sets and their variants
The fuzzy subgroups for the nilpotent ( p-group) of (d23 × c2m) for m ≥ 3

Sunday Adesina Adebisi; Mike Ogiugo; Michael Enioluwafe

Volume 3, Issue 3 , July 2022, , Pages 212-218

https://doi.org/10.22105/jfea.2022.337181.1215

Abstract
  A group is nilpotent if it has a normal series of a finite length n. By this notion, every finite p-group is nilpotent. The nilpotence property is an hereditary one. Thus, every finite p-group possesses certain remarkable characteristics. In this paper, the explicit formulae is given for the number of ...  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

https://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

https://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, , Pages 177-191

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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

https://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