Fuzzy sets and their variants
Theoretical Approaches of Interval-Valued Fuzzy Code and Fuzzy Soft Code

Masresha Wassie Woldie

Articles in Press, Accepted Manuscript, Available Online from 06 February 2024

https://doi.org/10.22105/jfea.2024.424633.1328

Abstract
  In this study, we attempted to demonstrate the interval-valued fuzzy code by extending the concept of an interval-valued fuzzy set. Further, we discussed the operations of the interval-valued fuzzy code. The interval-valued fuzzy soft code is introduced, and various related properties are investigated ...  Read More

Fuzzy sets and their variants
Trusted fuzzy routing scheme in Flying Ad-hoc Network

Sahabul Alam; Joydeep Kundu; Shivnath Ghosh; Arindam Dey

Articles in Press, Accepted Manuscript, Available Online from 12 February 2024

https://doi.org/10.22105/jfea.2024.436052.1370

Abstract
  Unmanned aerial vehicles (UAVs) bring both potential and difficulties for emergency applications, including packet loss and changes in network topology. UAVs are also quickly taking up a sizable portion of the airspace, allowing Flying Ad Hoc Networks (FANETs) to conduct effective ad hoc missions. Therefore, ...  Read More

Fuzzy sets and their variants
On solving linear fractional programming transportation problems with fuzzy numbers

Abouzar Sheikhi; Mohammad Javad Ebadi

Volume 4, Issue 4 , October 2023, , Pages 327-339

https://doi.org/10.22105/jfea.2024.402392.1294

Abstract
  In this paper, we present a novel method for solving Fractional Transportation Problems (FTPs) with fuzzy numbers using a ranking function. The proposed method introduces a transformation technique that converts an FTP with fuzzy numbers into an FTP with crisp numbers by employing the robust ranking ...  Read More

Fuzzy sets and their variants
Bridge domination in fuzzy graphs

Sivasankar Shanmugam; Thirumal Perumal Aishwarya; Nagesh Shreya

Volume 4, Issue 3 , July 2023, , Pages 148-154

https://doi.org/10.22105/jfea.2023.382170.1251

Abstract
  In communication networks, strong connectivity between nodes is critical. The failure of strong connectivity between nodes may jeopardize the network’s stability. In fuzzy graphs, various dominating sets using strong edges are identified to avoid network stability. In this paper, the concept of ...  Read More

Fuzzy sets and their variants
Providing a hybrid fuzzy approach to explain managers’ mental paradigms to prioritize employee needs

Abolfazl Rezaei; Mohammad Hemati

Volume 4, Issue 3 , July 2023, , Pages 155-172

https://doi.org/10.22105/jfea.2022.335662.1212

Abstract
  Today, most manufacturing and service companies adopt a customer-oriented approach to take into account employee needs and expectations as a strategic principle for sustainability and success in a competitive market. Meanwhile, Sengeh argues that “many of the best ideas and strategies will not ...  Read More

Fuzzy sets and their variants
On algebraic aspects of η-fuzzy subgroups

Muhammad Waseem Asghar; Khushdil Ahmad

Volume 4, Issue 2 , June 2023, , Pages 65-80

https://doi.org/10.22105/jfea.2023.371356.1237

Abstract
  In this paper, we define the term " η-fuzzy subgroup" and show that every fuzzy subgroup is a η-fuzzy subgroup. We define some of the algebraic properties of the concept of η-fuzzy cosets. Furthermore, we initiate the study of the η-fuzzy normal subgroup and the quotient group with respect  to the ...  Read More

Fuzzy sets and their variants
The nilpotent ( p-group) of (D25 X C2n) for m > 5

Sunday Adesina Adebisi; Mike Ogiugo; Michael Enioluwafe

Volume 4, Issue 1 , March 2023, , Pages 1-7

https://doi.org/10.22105/jfea.2022.360304.1231

Abstract
  Every finite p-group is nilpotent. The nilpotence property is an hereditary one. Thus, every finite p-group possesses certain remarkable characteristics. Efforts are carefully being intensified to calculate, in this paper, the explicit formulae for the number of distinct fuzzy subgroups of the cartesian ...  Read More

Fuzzy sets and their variants
A note on somewhat fuzzy continuity

Zanyar A. Ameen

Volume 4, Issue 1 , March 2023, , Pages 60-64

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