Research Paper Ordered structures and their variants
1. New characterization theorems of the mp-quantales

George Georgescu

Volume 2, Issue 2 , Spring 2021, Pages 106-119

http://dx.doi.org/10.22105/jfea.2021.279892.1090

Abstract
  The mp-quantales were introduced in a previous paper as an abstraction of the lattices of ideals in mp-rings and the lattices of ideals in conormal lattices. Several properties of m-rings and conormal lattices were generalized to mp-quantales. In this paper we shall prove new characterization theorems ...  Read More

Research Paper Fuzzy sets and their variants
2. 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 , Spring 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

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

Gia Sirbiladze

Volume 2, Issue 2 , Spring 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

Research Paper Fuzzy sets and their variants
4. Well drilling fuzzy risk assessment using fuzzy FMEA and fuzzy TOPSIS

Mazdak Khodadadi-Karimvand; Hadi Shirouyehzad

Volume 2, Issue 2 , Spring 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

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

Semiu Ayinla Alayande; Ezekiel Akande; Amanze Egere

Volume 2, Issue 2 , Spring 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

Research Paper Soft sets and their variants
6. Fuzzy hypersoft sets and its weightage operator for decision making

Somen Debnath

Volume 2, Issue 2 , Spring 2021, Pages 163-170

http://dx.doi.org/10.22105/jfea.2021.275132.1083

Abstract
  Hypersoft set is an extension of the soft set where there is more than one set of attributes occur and it is very much helpful in multi-criteria group decision making problem. In a hypersoft set, the function F is a multi-argument function. In this paper, we have used the notion of Fuzzy Hypersoft Set ...  Read More

Research Paper Intuitionistic fuzzy sets and their variants
7. On the prediction of Covid-19 time series: an intuitionistic fuzzy logic approach

Imo Eyo; Jeremiah Eyoh; Uduak Umoh

Volume 2, Issue 2 , Spring 2021, Pages 171-190

http://dx.doi.org/10.22105/jfea.2021.263890.1070

Abstract
  This paper presents a time series analysis of a novel coronavirus, COVID-19, discovered in China in December 2019 using intuitionistic fuzzy logic system with neural network learning capability. Fuzzy logic systems are known to be universal approximation tools that can estimate a nonlinear function as ...  Read More