Volume 23 (2026)
Volume 22 (2025)
Volume 21 (2024)
Volume 20 (2023)
Volume 19 (2022)
Volume 18 (2021)
Volume 17 (2020)
Volume 16 (2019)
Volume 15 (2018)
Volume 14 (2017)
Volume 13 (2016)
Volume 12 (2015)
Volume 11 (2014)
Volume 10 (2013)
Volume 9 (2012)
Volume 8 (2011)
Volume 7 (2010)
Volume 6 (2009)
Volume 5 (2008)
Volume 4 (2007)
Volume 3 (2006)
Volume 2 (2005)
Volume 1 (2004)
Number of Articles: 16
cover 17-6 December 2020
Volume 17, Issue 6 , November and December 2020
Abstract
Read MoreApplications of generalized fixed points theorems to the existence of uncertain differential equations with finite delay
Volume 17, Issue 6 , November and December 2020, Pages 1-15
Abstract
In this paper, we study the existence and uniqueness of solutions to initial value problems associated to ordinary fuzzy differential equations with finite delay in the setting of a generalized Hukuhara derivative. Our approach is based on the results of fixed points of weakly contractive mappings on ... Read MoreA note on a theorem by Aldo Ghizzetti
Volume 17, Issue 6 , November and December 2020, Pages 17-27
Abstract
In this article, we explore some aspects of Fourier analysis on fuzzy sets. In particular, we give a complete characterization of the Fourier coefficients of fuzzy subsets of the unit circle. The main result hinges on a theorem by the Italian mathematician Aldo Ghizzetti. This work was part of a broader ... Read MoreCopula-based measurement error models
Volume 17, Issue 6 , November and December 2020, Pages 29-38
Abstract
In this work, we study the joint distribution function as well as the copula of (X-Z,Y) where the random vector (X, Y, Z) is characterized by a copula C_{X,Y,Z}. We use this copula to analyze a measurement error model. Some theoretical results, several examples as well as a simulation study are ... Read MoreAggregation of sequence of fuzzy measures
Volume 17, Issue 6 , November and December 2020, Pages 39-55
Abstract
In this paper we present construction of new fuzzy measures by applying extended aggregation function on a sequence of fuzzy measures. According to properties of applied aggregation function and properties of initial fuzzy measures, some properties of constructed fuzzy measure are proved. Additionally, ... Read MoreA combination risk-based approach to post-earthquake temporary accommodation site selection: A case study in Iran
Volume 17, Issue 6 , November and December 2020, Pages 54-74
Abstract
One of the most important problems after natural disasters in every country is the preparation of temporary accommodations for victims. The developers of preventive plans are also faced with numerous uncertainties in this crisis management topic. Furthermore, uncertainty is not defined in classical mathematical ... Read MoreGeneralized convex combination of implications on bounded lattices
Volume 17, Issue 6 , November and December 2020, Pages 75-91
Abstract
In this paper, the notions of the linear and g-convex combination for implications which extend the notion of convex combination of fuzzy implications on the unit interval to bounded lattices are introduced. A necessary and sufficient condition for the g-convex combination to be an implication is determined. ... Read MorePythagorean interval 2-tuple linguistic VIKOR method for evaluating human factors in construction project management
Volume 17, Issue 6 , November and December 2020, Pages 93-105
Abstract
In a construction project, there are many factors that affect the project quality, such as people, materials, machinery, environment, etc. Among them, people have the greatest influence on the project quality, whether people participate directly or indirectly. This paper mainly evaluates human factors ... Read MoreComplex fuzzy ordered weighted distance measures
Volume 17, Issue 6 , November and December 2020, Pages 107-114
Abstract
In this paper, we introduce the complex fuzzy ordered weighted distance (CFOWD) measure. It is a new measure that uses the main characteristics of the the orderedweighted averaging (OWA) operator and uncertain information represented as complex fuzzy values. This measure includes a wide range ... Read MoreA modified method on estimating and assessing the process yield with imprecise multiple characteristics
Volume 17, Issue 6 , November and December 2020, Pages 115-131
Abstract
The conventional advanced process yield index $S^{T}_{pk}$ is widely applied in industry to provide an exact measure of the overall production yield whose quality characteristics are mutually independent and multivariate normally distributed. While one can find numerous studies that consider a ... Read MoreRedundancy of mset topologies
Volume 17, Issue 6 , November and December 2020, Pages 133-137
Abstract
In this note, our aim is to present the relation between msets and $L$-fuzzy sets. We prove that an mset can be viewed as an $L$-fuzzy set. An mset topology can be viewed as an L-topology. Therefore, it follows that mset topologies are redundant in theoretical sense. Read MoreStates on implication basic algebras
Volume 17, Issue 6 , November and December 2020, Pages 139-156
Abstract
In this paper, the notions of Bosbach states and state-morphisms on implication basic algebra are introduced, along with their properties and related results. It is proved that Bosbach states coincide with Riecan states on bounded implication basic algebras. Accordingly, the relations between Bosbach ... Read More$C^\infty$ $L$-fuzzy manifolds with $L$-gradation of openness and $C^\infty$ $LG$-fuzzy mappings of them
Volume 17, Issue 6 , November and December 2020, Pages 157-174
Abstract
In this paper, we generalize all of the fuzzy structures which we have discussed in \cite{MM} to $L$-fuzzy set theory, where $L= <L,\leq,\bigwedge,\bigvee, '>$ denotes a complete distributive lattice with at least two elements. We define the concept of an $LG$-fuzzy topological space $(X, \mathfrak{T} ... Read MoreModal operators on pseudo-BE algebras
Volume 17, Issue 6 , November and December 2020, Pages 175-191
Abstract
In this paper, we define and study the modal operators on pseudo-BE algebras as special cases of closure operators on these structures.We prove that the composition of two modal operators is a modal operator if and only if they commute.For the particular case of a good pseudo-BCK algebra an equivalent ... Read MoreProbabilistic model development for estimating construction labor productivity optimization integrating with fuzzy logic approach systems
Volume 17, Issue 6 , November and December 2020, Pages 193-201
Abstract
Construction labour productivity is a foremost tool used for data assessing, planning, budgeting and establishment of construction project. Influence of multi variation factors results in decrease of labour productivity in construction field. Still we are dependent on traditional technique comprises ... Read MorePersian-translation 17-6 December 2020
Volume 17, Issue 6 , November and December 2020, Pages 205-218