Browsing by Author "V-4843-2019"
Now showing items 1-20 of 21
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An algorithm for choosing a good shape parameter for radial basis functions method with a case study in image processing
Ghalichi, Shabnam Sadat Seyed; Amirfakhrian, Majid; Allahviranloo, Tofigh (Elsevier B.V., 2022)Some efficient radial basis functions (RBFs) have a free parameter called the shape parameter that controls the shape of approximating function. This parameter is mainly selected by trial and error related to the problem. ... -
Analysis on determining the solution of fourth-order fuzzy initial value problem with Laplace operator
Akram, Muhammad; Ihsan, Tayyaba; Allahviranloo, Tofigh; Al-Shamiri, Mohammed M. Ali (AMER INST MATHEMATICAL SCIENCES-AIMS, 2022)This study presents a new analytical method to extract the fuzzy solution of the fuzzy initial value problem (FIVP) of fourth-order fuzzy ordinary differential equations (FODEs) using the Laplace operator under the strongly ... -
Attractiveness of pseudo almost periodic solutions for delayed cellular neural networks in the context of fuzzy measure theory in matrix-valued fuzzy spaces
Eidinejad, Zahra; Saadati, Reza; Allahviranloo, Tofigh (SPRINGER HEIDELBERG, 2022)In this paper, considering fuzzy measure theory and matrix-valued fuzzy norm spaces, we study a differential system of non-autonomous cellular neural networks with mixed delays (NA-CNN-MD). Our main goal is to investigate ... -
The best approximation of generalized fuzzy numbers based on scaled metric
Allahviranloo, Tofigh; Saneifard, Rasoul; Saneifard, Rahim; Kiani, Farzad; Noeiaghdam, Samad; Govindan, Vediyappan (HINDAWI LTD, 2022)The ongoing study has been vehemently allocated to propound an ameliorated alpha-weighted generalized approximation of an arbitrary fuzzy number. This method sets out to lessen the distance between the original fuzzy set ... -
Bifurcation and multiplicity of solutions of the navier-stokes equations in driven semi-elliptical cavity flow
Erturk, Ercan; Allahviranloo, Tofigh (MDPI, 2022)In this paper, bifurcations in the solution of the Navier-Stokes equations are studied and multiple solutions of the driven semi-elliptical cavity flow are presented. The two-dimensional steady incompressible driven viscous ... -
Classical and intelligent methods in model extraction and stabilization of a dual-axis reaction wheel pendulum: a comparative study
Tavakol Aghaei, Vahid; Akbulut, Batuhan Ekin; Tan, Deniz; Allahviranloo, Tofigh; Fernandez Gamiz, Unai; Noeiaghdam, Samad; Bezci, Yuksel Ediz (Elsevier B.V., 2022)Controlling underactuated open-loop unstable systems is challenging. In this study, first, both nonlinear and linear models of a dual-axis reaction wheel pendulum (DA-RWP) are extracted by employing Lagrangian equations ... -
Conditions to guarantee the existence of solutions for a nonlinear and implicit integro-differential equation with variable coefficients
Li, Chenkuan; Saadati, Reza; Allahviranloo, Tofigh (WILEY, 2022)Using Babenko's approach, multivariate Mittag-Leffler (MM-L) function, and Krasnoselskii's fixed point theorem, we first investigate the existence of solutions to a Liouville-Caputo nonlinear integro-differential equation ... -
Fuzzy generalized fractional power series technique for simulating fuzzy fractional relaxation problem
Ebdalifar, Khatereh; Allahviranloo, Tofigh; Rostamy-Malkhalifeh, Mohsen; Behzadi, Mohammad Hassan (Springer link, 2022)In this paper, the fuzzy generalized fractional power series method is proposed to obtain the numerical solutions of a class of fuzzy fractional relaxation problems. For this purpose, the fuzzy generalized fractional power ... -
Generalized Hukuhara conformable fractional derivative and its application to fuzzy fractional partial differential equations
Ghaffari, Manizheh; Allahviranloo, Tofigh; Abbasbandy, Saeid; Azhini, Mahdi (SPRINGER, 2022)The main focus of this paper is to develop an efficient analytical method to obtain the traveling wave fuzzy solution for the fuzzy generalized Hukuhara conformable fractional equations by considering the type of generalized ... -
Interval model for calculating prospect cross efficiency of data envelopment analysis and providing a solution for its expansion in fuzzy model
Rahmani, Amir; Rostamy-Malkhalifeh, Mohsen; Lotfi, Farhad Hosseinzadeh; Allahviranloo, Tofigh (SEMNAN UNIV, 2021)Cross efficiency evaluation of data envelopment analysis (DEA) is an effective tool in measuring the performance of decision-making units. In general, in cross efficiency evaluation models, it is assumed that decision ... -
Introducing and solving the hesitant fuzzy system A X = B
Babakordi, Fatemeh; Allahviranloo, Tofigh (Systems Research Institute, Polish Academy of Sciences, 2022)In this paper the solution for hesitant fuzzy system as AX = B is introduced where A is an n ×n known hesitant fuzzy matrix, B is an n ×1 known hesitant fuzzy vector and X is an n ×1 unknown hesitant fuzzy vector. First, ... -
Multi-step gH-difference-based methods for fuzzy differential equations
Safikhani, Leila; Vahidi, Alireza; Allahviranloo, Tofigh; Afshar Kermani, Mozhdeh (Springer Nature, 2023)The main purpose of this paper is to introduce fuzzy Adams–Bashforth (A–B) and fuzzy Adams–Moulton (A–M) methods based on the generalized Hukuhara (gH)-differentiability and employ them as the predictor and corrector, ... -
New analysis of fuzzy fractional Langevin differential equations in Caputo's derivative sense
Akram, Muhammad; Muhammad, Ghulam; Allahviranloo, Tofigh; Ali, Ghada (AMER INST MATHEMATICAL SCIENCES-AIMS, 2022)The extraction of analytical solution of uncertain fractional Langevin differential equations involving two independent fractional-order is frequently complex and difficult. As a result, developing a proper and comprehensive ... -
A new estimation of failure analysis in fuzzy environment, case study: The electrical model failure for the football stadium
Allahviranloo, Tofigh; Abbasi, F. (World Scientific Publishing Co. Pte. Ltd., 2022)In this paper, we propose the new fuzzy arithmetic operations based on transmission average on pseudo-hexagonal fuzzy numbers from [F. Abbasi, T. Allahviranloo and S. Abbasbandy, A new attitude coupled with fuzzy thinking ... -
A new maximal flow algorithm for solving optimization problems with linguistic capacities and flows
Akram, Muhammad; Habib, Amna; Allahviranloo, Tofigh (ELSEVIER SCIENCE INC, 2022)The maximal flow problems (MFPs) are among the most significant optimization problems in network flow theory with widespread and diverse applications. To represent qualitative aspects of uncertainty in the maximal flow ... -
A numerical method for approximating the solution of fuzzy fractional optimal control problems in caputo sense using legendre functions
Mirvakili, M.; Allahviranloo, T.; Soltanian, F. (IOS PRESS, 2022)Fractional order differential equations accurately model dynamic systems and processes. In some of the fractional optimal control problems (FOCPs), due to the ambiguity in the initial conditions and the transfer of ambiguity ... -
Optimal data transmission and pathfinding for WSN and decentralized IoT systems using I-GWO and Ex-GWO algorithms
Seyyedabbasi, Amir; Kiani, Farzad; Allahviranloo, Tofigh; Fernandez-Gamiz, Unai; Noeiaghdam, Samad (Elsevier B.V., 2023)Efficient resource use is a very important issue in wireless sensor networks and decentralized IoT-based systems. In this context, a smooth pathfinding mechanism can achieve this goal. However, since this problem is a ... -
Realistic solution of fuzzy critical path problems, case study: the airport's cargo ground operation systems
Fazlollah, Abbasi; Allahviranloo, Tofigh (Springer, 2022)In fact, this research is executed in an environment where uncertainty is the principal feature of it. One of these uncertainties in the project planning process is estimating the duration of activities. This paper presents ... -
Solution of initial-value problem for linear third-order fuzzy differential equations
Muhammad, Ghulam; Allahviranloo, Tofigh; Pedrycz, Witold (SPRINGER HEIDELBERG, 2022)Every real-world physical problem is inherently based on uncertainty. It is essential to model the uncertainty then solve, analyze and interpret the result one encounters in the world of vagueness. Generally, science and ... -
State feedback control for fractional differential equation system in the space of linearly correlated fuzzy numbers
Son, Nguyen Thi Kim; Thao, Hoang Thi Phuong; Allahviranloo, Tofigh; Long, Hoang Viet (Elsevier, 2022)In this paper, we will introduce Caputo fractional LC derivative defined in the linear correlated fuzzy-valued number space RF (A) and some of its applications, specifically the feedback control problem in the space RF ...
