Pythagorean fuzzy sets and their variants
1. A modified Pythagorean fuzzy analytic hierarchy process based on interval-valued Pythagorean fuzzy numbers

Shahid Ahmad Bhat; Akanksha Singh

Articles in Press, Accepted Manuscript, Available Online from 05 March 2021

http://dx.doi.org/10.22105/jfea.2021.269561.1071

Abstract
  The analytic hierarchy process (AHP), is one of the well-known and most widely used technique to determine the priority weights of alternatives from pairwise comparison matrices. Several fuzzy and intuitionistic fuzzy extensions of AHP have been proposed in the literature. However, these extensions are ...  Read More

Fuzzy sets and their variants
2. New View of Fuzzy Aggregations. Part I: General Information Structure for Decision-Making Models

Gia Sirbiladze

Articles in Press, Accepted Manuscript, Available Online from 07 March 2021

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

Abstract
  The Ordered Weighted Averaging (OWA) operator was introduced by R.R. Yager [58] 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 J.M. Merigo [27, 28]) are considered ...  Read More

Other
3. Well Drilling Fuzzy Risk Assessment using Fuzzy FMEA and Fuzzy TOPSIS

Mazdak Khodadadi-Karimvand; Hadi Shirouyehzad

Articles in Press, Accepted Manuscript, Available Online from 07 March 2021

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
4. New View of Fuzzy Aggregations. Part II: Associated Probabilities in the POWA operator

Gia Sirbiladze

Articles in Press, Accepted Manuscript, Available Online from 27 March 2021

http://dx.doi.org/10.22105/jfea.2021.275094.1081

Abstract
  The Ordered Weighted Averaging (OWA) operator was introduced by R.R. Yager [58] to provide a method for aggregating inputs that lie between the max and min operators. In this article several variants of the generalizations of the fuzzy-probabilistic OWA operator - POWA (introduced by J.M. Merigo [27,28]) ...  Read More

Fuzzy sets and their variants
5. New View of Fuzzy Aggregations. Part III: Extensions of the FPOWA Operator in the Problem of Political Management

Gia Sirbiladze

Articles in Press, Accepted Manuscript, Available Online from 27 March 2021

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

Abstract
  The Ordered Weighted Averaging (OWA) operator was introduced by R.R. 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

Intuitionistic fuzzy sets and their variants
6. On the Prediction of Covid-19 Time Series: An Intuitionistic Fuzzy Logic Approach

Imo Eyo; Jeremiah Eyoh; Uduak Umoh

Articles in Press, Accepted Manuscript, Available Online from 27 March 2021

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 ...  Read More

Ordered structures and their variants
7. New characterization theorems of the mp -quantales

George Georgescu

Articles in Press, Accepted Manuscript, Available Online from 07 April 2021

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