Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (714 journals)
    - MATHEMATICS (GENERAL) (45 journals)
    - NUMERICAL ANALYSIS (26 journals)
    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)            First | 1 2 3 4 | Last

Showing 201 - 400 of 538 Journals sorted alphabetically
Educação Matemática Debate     Open Access  
Edumatica : Jurnal Pendidikan Matematika     Open Access  
EduMatSains     Open Access  
Electronic Journal of Differential Equations     Open Access  
Electronic Journal of Graph Theory and Applications     Open Access   (Followers: 3)
Em Teia : Revista de Educação Matemática e Tecnológica Iberoamericana     Open Access  
Emergent Scientist     Open Access  
Energy for Sustainable Development     Hybrid Journal   (Followers: 13)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Open Access   (Followers: 2)
Euclid     Open Access  
European Journal of Applied Mathematics     Hybrid Journal  
European Journal of Combinatorics     Full-text available via subscription   (Followers: 3)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 1)
Examples and Counterexamples     Open Access  
Experimental Mathematics     Hybrid Journal   (Followers: 5)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Extracta Mathematicae     Open Access  
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 5)
Fixed Point Theory and Applications     Open Access  
Formalized Mathematics     Open Access  
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Foundations and Trends® in Econometrics     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Networking     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Stochastic Systems     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Theoretical Computer Science     Full-text available via subscription   (Followers: 1)
Foundations of Computational Mathematics     Hybrid Journal  
Fractal and Fractional     Open Access  
Fractals     Hybrid Journal   (Followers: 1)
Frontiers of Mathematics in China     Hybrid Journal  
Fuel Cells Bulletin     Full-text available via subscription   (Followers: 9)
Functional Analysis and Other Mathematics     Hybrid Journal   (Followers: 4)
Fundamental Journal of Mathematics and Applications     Open Access  
Funktsional'nyi Analiz i ego Prilozheniya     Full-text available via subscription  
Fuzzy Optimization and Decision Making     Hybrid Journal   (Followers: 8)
Game Theory     Open Access   (Followers: 2)
Games     Open Access   (Followers: 4)
Games and Economic Behavior     Hybrid Journal   (Followers: 25)
Gamm - Mitteilungen     Hybrid Journal  
GANIT : Journal of Bangladesh Mathematical Society     Open Access  
GEM - International Journal on Geomathematics     Hybrid Journal   (Followers: 1)
General Mathematics     Open Access  
Glasgow Mathematical Journal     Full-text available via subscription  
Global Journal of Mathematical Sciences     Full-text available via subscription  
Graphs and Combinatorics     Hybrid Journal   (Followers: 4)
Grey Systems : Theory and Application     Hybrid Journal  
Groups, Complexity, Cryptology     Open Access   (Followers: 2)
GSTF Journal of Mathematics, Statistics and Operations Research     Open Access   (Followers: 1)
Historia Mathematica     Full-text available via subscription  
Historical Methods: A Journal of Quantitative and Interdisciplinary History     Hybrid Journal   (Followers: 28)
IMA Journal of Applied Mathematics     Hybrid Journal  
IMA Journal of Numerical Analysis - advance access     Hybrid Journal  
ImmunoInformatics     Open Access   (Followers: 1)
Indagationes Mathematicae     Open Access  
Indian Journal of Pure and Applied Mathematics     Hybrid Journal   (Followers: 4)
Indonesian Journal of Combinatorics     Open Access  
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 1)
Infinite Dimensional Analysis, Quantum Probability and Related Topics     Hybrid Journal   (Followers: 1)
Infinity Jurnal Matematika dan Aplikasinya     Open Access   (Followers: 3)
Information and Inference     Free  
InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan     Open Access  
InfraMatics     Open Access  
Insight - Non-Destructive Testing and Condition Monitoring     Full-text available via subscription   (Followers: 111)
International Electronic Journal of Algebra     Open Access  
International Journal for Numerical Methods in Engineering     Hybrid Journal   (Followers: 35)
International Journal for Numerical Methods in Fluids     Hybrid Journal   (Followers: 19)
International Journal of Advanced Mathematical Sciences     Open Access  
International Journal of Advanced Mechatronic Systems     Hybrid Journal   (Followers: 2)
International Journal of Advanced Research in Mathematics     Open Access  
International Journal of Advances in Engineering Sciences and Applied Mathematics     Hybrid Journal   (Followers: 10)
International Journal of Algebra and Computation     Hybrid Journal   (Followers: 1)
International Journal of Algebra and Statistics     Open Access   (Followers: 3)
International Journal of Applied and Computational Mathematics     Hybrid Journal  
International Journal of Applied Mathematical Research     Open Access   (Followers: 1)
International Journal of Applied Mathematics and Computer Science     Open Access   (Followers: 7)
International Journal of Applied Mechanics     Hybrid Journal   (Followers: 8)
International Journal of Applied Nonlinear Science     Hybrid Journal  
International Journal of Autonomic Computing     Hybrid Journal   (Followers: 1)
International Journal of Bifurcation and Chaos     Hybrid Journal   (Followers: 4)
International Journal of Biomathematics     Hybrid Journal   (Followers: 2)
International Journal of Computational Complexity and Intelligent Algorithms     Hybrid Journal  
International Journal of Computational Economics and Econometrics     Hybrid Journal   (Followers: 6)
International Journal of Computational Geometry and Applications     Hybrid Journal   (Followers: 2)
International Journal of Computational Intelligence and Applications     Hybrid Journal   (Followers: 2)
International Journal of Computational Methods     Hybrid Journal   (Followers: 4)
International Journal of Computer Processing Of Languages     Hybrid Journal   (Followers: 1)
International Journal of Control, Automation and Systems     Hybrid Journal   (Followers: 15)
International Journal of Dynamical Systems and Differential Equations     Hybrid Journal   (Followers: 1)
International Journal of Economics and Accounting     Hybrid Journal   (Followers: 1)
International Journal of Foundations of Computer Science     Hybrid Journal   (Followers: 3)
International Journal of Fuzzy Computation and Modelling     Hybrid Journal   (Followers: 2)
International Journal of Image and Graphics     Hybrid Journal   (Followers: 5)
International Journal of Industrial Electronics and Drives     Hybrid Journal   (Followers: 3)
International Journal of Low-Carbon Technologies     Open Access   (Followers: 1)
International Journal of Mathematical Education in Science and Technology     Hybrid Journal   (Followers: 9)
International Journal of Mathematical Modelling & Computations     Open Access   (Followers: 3)
International Journal of Mathematical Modelling and Numerical Optimisation     Hybrid Journal   (Followers: 5)
International Journal of Mathematical Sciences and Computing     Open Access  
International Journal of Mathematics     Hybrid Journal   (Followers: 4)
International Journal of Mathematics & Computation     Full-text available via subscription  
International Journal of Mathematics and Mathematical Sciences     Open Access   (Followers: 4)
International Journal of Mathematics in Operational Research     Hybrid Journal   (Followers: 2)
International Journal of Metaheuristics     Hybrid Journal   (Followers: 1)
International Journal of Modelling in Operations Management     Hybrid Journal   (Followers: 2)
International Journal of Modern Nonlinear Theory and Application     Open Access   (Followers: 1)
International Journal of Number Theory     Hybrid Journal   (Followers: 1)
International Journal of Partial Differential Equations     Open Access   (Followers: 2)
International Journal of Polymer Science     Open Access   (Followers: 25)
International Journal of Pure Mathematical Sciences     Open Access  
International Journal of Reliability, Quality and Safety Engineering     Hybrid Journal   (Followers: 14)
International Journal of Research in Undergraduate Mathematics Education     Hybrid Journal   (Followers: 4)
International Journal of Sediment Research     Full-text available via subscription   (Followers: 2)
International Journal of Shape Modeling     Hybrid Journal   (Followers: 1)
International Journal of Theoretical and Mathematical Physics     Open Access   (Followers: 13)
International Journal of Trends in Mathematics Education Research     Open Access   (Followers: 4)
International Journal of Ultra Wideband Communications and Systems     Hybrid Journal  
International Journal of Wavelets, Multiresolution and Information Processing     Hybrid Journal  
International Journal on Artificial Intelligence Tools     Hybrid Journal   (Followers: 9)
International Mathematics Research Notices     Hybrid Journal   (Followers: 1)
Internet Mathematics     Hybrid Journal   (Followers: 1)
Inventiones mathematicae     Hybrid Journal   (Followers: 2)
Inverse Problems in Science and Engineering     Hybrid Journal   (Followers: 3)
Investigations in Mathematics Learning     Hybrid Journal  
Iranian Journal of Optimization     Open Access   (Followers: 2)
Israel Journal of Mathematics     Hybrid Journal  
Ithaca : Viaggio nella Scienza     Open Access  
ITM Web of Conferences     Open Access  
Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya     Full-text available via subscription  
Jahresbericht der Deutschen Mathematiker-Vereinigung     Hybrid Journal  
Japan Journal of Industrial and Applied Mathematics     Hybrid Journal  
Japanese Journal of Mathematics     Hybrid Journal  
JIPM (Jurnal Ilmiah Pendidikan Matematika)     Open Access  
JMPM : Jurnal Matematika dan Pendidikan Matematika     Open Access  
JOHME : Journal of Holistic Mathematics Education     Open Access   (Followers: 3)
Johnson Matthey Technology Review     Open Access  
Jornal Internacional de Estudos em Educação Matemática     Open Access  
Journal d'Analyse Mathématique     Hybrid Journal   (Followers: 2)
Journal de Mathématiques Pures et Appliquées     Full-text available via subscription   (Followers: 3)
Journal for Research in Mathematics Education     Full-text available via subscription   (Followers: 29)
Journal für Mathematik-Didaktik     Hybrid Journal  
Journal of Advanced Mathematics and Applications     Full-text available via subscription   (Followers: 1)
Journal of Algebra     Full-text available via subscription   (Followers: 3)
Journal of Algebra and Its Applications     Hybrid Journal   (Followers: 3)
Journal of Algebraic Combinatorics     Hybrid Journal   (Followers: 3)
Journal of Algorithms & Computational Technology     Open Access  
Journal of Applied Mathematics     Open Access   (Followers: 3)
Journal of Applied Mathematics and Computing     Hybrid Journal  
Journal of Applied Mathematics, Statistics and Informatics     Open Access   (Followers: 1)
Journal of Artificial Intelligence and Data Mining     Open Access   (Followers: 10)
Journal of Classification     Hybrid Journal   (Followers: 5)
Journal of Combinatorial Designs     Hybrid Journal   (Followers: 4)
Journal of Combinatorial Optimization     Hybrid Journal   (Followers: 7)
Journal of Combinatorial Theory, Series A     Full-text available via subscription   (Followers: 5)
Journal of Combinatorial Theory, Series B     Full-text available via subscription   (Followers: 3)
Journal of Complex Analysis     Open Access   (Followers: 2)
Journal of Complex Networks     Hybrid Journal   (Followers: 1)
Journal of Complexity     Hybrid Journal   (Followers: 6)
Journal of Computational and Applied Mathematics     Hybrid Journal   (Followers: 6)
Journal of Computational Biology     Hybrid Journal   (Followers: 9)
Journal of Computational Mathematics and Data Science     Open Access  
Journal of Computational Multiphase Flows     Open Access   (Followers: 1)
Journal of Computational Physics     Hybrid Journal   (Followers: 59)
Journal of Computational Physics : X     Open Access   (Followers: 1)
Journal of Computer Engineering, System and Science (CESS)     Open Access  
Journal of Contemporary Mathematical Analysis     Hybrid Journal  
Journal of Cryptology     Hybrid Journal   (Followers: 5)
Journal of Difference Equations and Applications     Hybrid Journal  
Journal of Differential Equations     Full-text available via subscription   (Followers: 1)
Journal of Discrete Mathematics     Open Access   (Followers: 1)
Journal of Dynamics and Differential Equations     Hybrid Journal  
Journal of Engineering Mathematics     Hybrid Journal   (Followers: 2)
Journal of Evolution Equations     Hybrid Journal  
Journal of Experimental Algorithmics     Full-text available via subscription  
Journal of Flood Risk Management     Hybrid Journal   (Followers: 14)
Journal of Function Spaces     Open Access  
Journal of Functional Analysis     Full-text available via subscription   (Followers: 3)
Journal of Geochemical Exploration     Hybrid Journal   (Followers: 4)
Journal of Geological Research     Open Access   (Followers: 1)
Journal of Geovisualization and Spatial Analysis     Hybrid Journal  
Journal of Global Optimization     Hybrid Journal   (Followers: 6)
Journal of Global Research in Mathematical Archives     Open Access  
Journal of Homotopy and Related Structures     Hybrid Journal  
Journal of Honai Math     Open Access  
Journal of Humanistic Mathematics     Open Access   (Followers: 1)
Journal of Hyperbolic Differential Equations     Hybrid Journal  
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Industrial Mathematics     Open Access   (Followers: 2)
Journal of Inequalities and Applications     Open Access  
Journal of Infrared, Millimeter and Terahertz Waves     Hybrid Journal   (Followers: 3)
Journal of Integrable Systems     Open Access  
Journal of Knot Theory and Its Ramifications     Hybrid Journal   (Followers: 2)
Journal of Liquid Chromatography & Related Technologies     Hybrid Journal   (Followers: 7)
Journal of Logical and Algebraic Methods in Programming     Hybrid Journal   (Followers: 1)
Journal of Manufacturing Systems     Full-text available via subscription   (Followers: 3)
Journal of Mathematical Analysis and Applications     Full-text available via subscription   (Followers: 3)
Journal of mathematical and computational science     Open Access   (Followers: 2)

  First | 1 2 3 4 | Last

Similar Journals
Journal Cover
International Journal of Applied and Computational Mathematics
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2349-5103 - ISSN (Online) 2199-5796
Published by Springer-Verlag Homepage  [2469 journals]
  • Numerical Study of a Nonlinear High Order Boundary Value Problems Using
           Genocchi Collocation Technique

    • Free pre-print version: Loading...

      Abstract: Abstract The present work aims to investigate the approximate solution to a general form of higher-order boundary value problem of both linear and nonlinear types. A novel Genocchi polynomial-based method is adapted for solving the model through a matrix collocation-based method. The considered model is investigated using the presented technique which mainly converts the equation into a system of algebraic equations. This system is then solved using a new algorithm. The method is tested on several examples and the acquired results prove that the method is accurate compared to other techniques from the literature. The method is straightforward and fast in terms of computational effort and is considered a promising technique for solving similar problems.
      PubDate: 2022-05-24
       
  • Oblique Traveling Wave Closed-Form Solutions to Space-Time Fractional
           Coupled Dispersive Long Wave Equation Through the Generalized Exponential
           Expansion Method

    • Free pre-print version: Loading...

      Abstract: Abstract This work concerned with the oblique traveling wave solutions of coupled space-time fractional (2 + 1)-dimensional dispersive long wave equations (DLWE) for understanding the basic features of resonance wave dynamics in science and engineering, mainly in water wave dynamics. The generalized exp(−  \({\Psi }\) (ζ))-expansion scheme mutually by means of conformable derivatives is implemented to seek several types of faithful solutions of coupled DLWE. The oblique traveling wave solutions are displayed in the forms of trigonometric, hyperbolic and rational functions through physical and some supplementary free parameters. It is predicted that the obliqueness is significantly modified the oppositely propagating long waves assuming the suitable values of the parameters.
      PubDate: 2022-05-24
       
  • Analysis of the Fractal-Fractional Modelling of Immune-Tumor Problem

    • Free pre-print version: Loading...

      Abstract: Abstract Cancer is one of the biggest threats around the globe, albeit medical action has been prosperous, despite large challenges, at least for some diagnostics. A magnificent effort of personal and financial resources is dedicated, with flourishing results(but also with failures), to cancer analysis with special consideration to experimental and analytical immunology. Fractal-fractional operators have manifested the enigmatic performance of numerous natural phenoms, which ordinarily do not foretell in ordinary ones and fractional operators. In this study, we examine an Immune-Tumor dynamical system supporting the fractal-fractional frame. We authenticate the existence theory to guarantee the suggested system maintains at least one answer through Schauder’s fixed point theorem. Additionally, Banach’s fixed theory affirms the uniqueness of the answer to the aimed problem. A Non-linear functional examination was carried out to affirm that the introduced system is stable with respect to Ulam-Hyres’s theory supporting the fractal-fractional operator. Behavior of the offered problem is presented through the graphical representations, for the different amounts of fractional order and fractal orders successfully.
      PubDate: 2022-05-20
       
  • Dynamics of Fractional Chaotic Systems with Chebyshev Spectral
           Approximation Method

    • Free pre-print version: Loading...

      Abstract: Abstract The dynamical behavior of chaotic processes with a noninteger-order operator is considered in this work. A lot of scientific reports have justified that modeling of physical scenarios via non-integer order derivatives is more reliable and accurate than integer-order cases. Motivated by this fact, the standard time derivatives in the model equations are formulated with the novel Caputo fractional-order operator. The choice of using the Caputo derivative among several existing fractional derivatives has to do with the fact that it gives way for both the initial conditions and boundary conditions to be incorporated in the development of the chaotic model. Numerical approximation of fractional derivatives has been the major challenge of many scholars in different areas of engineering and applied sciences. Hence, we developed a numerical approximation technique, which is based on the Chebyshev spectral method for solving the integer-order and non-integer-order chaotic systems which are largely found in physics, finance, biology, engineering, and other areas of applied sciences. The proposed numerical method used here is easy to implement on a digital computer, and capable of solving higher-order problems without reduction to the system of lower-order ordinary differential equations with limited computational costs. Experimental results are presented for different instances of fractional-order parameters.
      PubDate: 2022-05-19
       
  • Bessel Wavelet Transform and Fractional Bessel Wavelet Transform on
           Functions of Rapid Descent

    • Free pre-print version: Loading...

      Abstract: Abstract The key objective of the paper is to extend the Bessel wavelet transform and fractional Bessel wavelet transform to distributions of slow growth using adjoint method. We prove the continuity of Bessel wavelet transform and its inverse in a suitable Zemanian type space. Based on this, the continuity of fractional Bessel wavelet transform and its inverse is proved in the above space. Using the continuity results, these transforms are extended as an adjoint to the corresponding dual space of distributions. The examples of Bessel wavelet transform of a polynomial function and a distribution are given. The Schrödinger equation is solved using the Bessel wavelet transform.
      PubDate: 2022-05-18
       
  • Time-Fractional Differential Equations with Variable Order using RDTM and
           ADM: Application to Infectious-Disease Model

    • Free pre-print version: Loading...

      Abstract: Abstract From the current scenario it is well known that the most of the engineering problem leads to the mathematical model with different concept. Associated with these phenomena, the present investigation gathers some physical interpretation of different model that leads to couple nonlinear time fractional differential equation encompass with variable order within certain domain relating to the physical significance of the corresponding problem. The system of equations is based upon Caputo-type fractional differential equation in particular cases. The crux of this investigation is that the use of various solution approach for the modeled problems such as “Reduced Differential Transform Method” and “Adomian Decomposition Method”. Finally, the aforesaid methodologies are also applicable for the infectious diseases model and verified in particular case of integral order with an earlier investigation.
      PubDate: 2022-05-17
       
  • Dynamics of Diverse Optical Solitary Wave Solutions to the Biswas–Arshed
           Equation in Nonlinear Optics

    • Free pre-print version: Loading...

      Abstract: Abstract The solitary wave solutions gained well-reputed significance because of their peculiar characteristics. Solitary waves are spatially localized waves and are found in a variety of natural systems from mathematical physics and engineering phenomena. This manuscript deals the investigation of optical pulses to the Biswas–Arshed equation with third order dispersion and self-steepening coefficients in nonlinear optics. Various optical pulses are recovered in single and combo shapes like bright, dark, singular, bright-dark, and dark-singular solitons by the virtue of extended sinh-Gordon equation expansion method and ( \(\frac{G^{\prime }}{G^2}\) )-expansion function method. Besides, the singular periodic wave solutions are also derived. The constraints conditions to ensure the existence criteria of reported optical solutions are also listed. In addition, by selecting different parametric values, the physical representation of some achieved solutions is plotted in 3D graphs with the help of Mathematica. The reported results show that the proposed methods are effective, concise, straightforward, powerful, and they can be used to tackle some more complex nonlinear systems.
      PubDate: 2022-05-17
       
  • Effects of Catheter, Stenosis and Thrombosis in Non-Newtonian Blood Flow
           Through Narrow Arteries with Clinical Applications: A Mathematical Model

    • Free pre-print version: Loading...

      Abstract: Abstract This study analyses the rheological characteristics of non-Newtonian Carreau fluid model for nanoparticles suspended flow of blood through constricted arteries in the presence of stenosis, thrombosis and catheters. Analytical expressions, such as, velocity distribution, temperature, pressure gradient, wall shear stress and resistive impedance to flow are obtained by implementing the perturbation method and through the extensive use of MATLAB and MATHEMATICA programming tools, the results are presented graphically and tabularly. It is found that temperature of the fluid lessens with the increase in stenosis shape parameter and depth of stenosis which results in the reduction of flow of blood in the artery. It is discovered that a rise in Weissenberg number results in the decrease of fluid’s velocity and skin friction. The magnitude of resistance to blood flow reduces with the upsurge of flow rate and stenosis shape parameter and the reverse character is recognized when Weissenberg number, the depth and axial displacement of blood clot increases. When the angioplasty catheter of radius 0.3 is inserted to the clear the constrictions in the artery, the resistance to flow surges considerably in the range of 6.75–8.78 when the stenosis position extends in the axial direction from 0.1 to 0.3. It is also recorded that when the catheter guidewire radius is 0.18, the pressure gradient in blood flow is found to vary in the range of 1.21–1.43 when the axial variable z varies from 0.2 to 0.8 and it decreases from 1.36 to 1.32 when the blood clot position displaces from 0.2 to 0.6.
      PubDate: 2022-05-16
       
  • On Certain New Results of Fractional Calculus Involving Product of
           Generalized Special Functions

    • Free pre-print version: Loading...

      Abstract: Abstract The key aim of the present work is to develop extended fractional calculus results associated with product of the generalized extended Mittag–Leffler function, S-function, general class of polynomials and \({\overline{\text{H}}}\) -function. Some special cases involving various simpler and useful special functions are given to show the importance and utilizations of our main findings. The outcomes are very general in characteristic and can be utilized to derive numerous interesting fractional integral operators involving simpler special functions and polynomials having uses in scientific and engineering problems.
      PubDate: 2022-05-14
       
  • An investigation of Heat Transfer and Magnetohydrodynamics Flow of
           Fractional Oldroyd-B Nanofluid Suspended with Carbon Nanotubes

    • Free pre-print version: Loading...

      Abstract: Abstract This study aims to investigate the heat transfer and magnetohydrodynamics flow of fractional Oldroyd-B nanofluid in a porous medium with radiation effect. The Caputo time-fractional derivative model is introduced to develop the Oldroyd-B fluid’s constitutive relationship, which describes both memory and elastic effects. Two kinds of carbon nanotubes, particularly single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) with base fluid water are considered for the study. The presence of carbon nanotubes with fractional derivatives made the results advantageous for handling similar heat-regulating industrial and engineering problems like achieving heat transfer management in automobile engines, boiler, heat exchangers, grinders and refrigerators. Nonlinear coupled governing equations involving Caputo time-fractional derivatives are reduced to dimensionless form using suitable non-dimensional quantities. The obtained nonlinear governing equations are solved using finite difference approximation with the combined L1 algorithm. Influence of involved parameters on fluid motion and thermal distribution are presented via plots and discussed in detail. The comparison between two kinds of nanofluids, namely SWCNT Oldroyd-B nanofluid and MWCNT Oldroyd-B nanofluid are studied and noticed that MWCNT Oldroyd-B nanofluid provides higher velocity and lower temperature for all embedded parameters. Also, skin-friction and heat transfer rate are controlled by the flow parameters like relaxation and retardation times, relaxation and retardation fractional derivatives, nanoparticle volume fraction, porosity, Darcy number, magnetic and radiation parameters. Furthermore, it is observed that \(\overline{C_{f}}_{{\mathrm{MWCNT Oldroyd{-}B}\,\mathrm{nanofluid}}} > \overline{C_{f}}_{{\mathrm{SWCNT Oldroyd{-}B}\,\mathrm{nanofluid}}}\)   and   \(\overline{Nu}_{{\mathrm{SWCNT Oldroyd{-}B}\,\mathrm{nanofluid}}} >\overline{Nu}_{{\mathrm{MWCNT Oldroyd{-}B}\, \mathrm{nanofluid}}}\) .
      PubDate: 2022-05-13
       
  • Impact of Magnetic Field on the Flow of a Conducting Fluid Past an
           Impervious Spheroid Embedded in Porous Medium

    • Free pre-print version: Loading...

      Abstract: Abstract The majority of the previous studies analyzed the flow of fluid around the perfect sphere however the slight deformations in the shape of the particle are observed in nature. The motivation of the present work is to investigate the impact of MHD flow on slightly deformed sphere embedded in unbounded porous medium. The stream function for the flow field is calculated in terms of Bessel and Gegenbauer functions. As a boundary conditions, vanishing of normal and tangential component of velocity are applied. The resistance force is evaluated past an impermeable spheroid. As a special case, we consider an electrically conducting fluid motion past a rigid oblate spheroid embedded in a porous medium. Also, the expression for non-dimensional drag and dimensionless shearing stress are computed and its variation with Hartmann number, permeability, and deformation parameters are depicted graphically. The flow patterns of the streamline are represented graphically along the axial direction of the spheroidal particles. A number of specific cases are developed and compared to earlier research, demonstrating that our approach is valid. The results show that the magnetic field increases the resistance on the oblate spheroid. The investigation of the current study may be beneficial in the delivery of medications to the desired location, the medical treatment of tumors, cancer, and others.
      PubDate: 2022-05-13
       
  • Numerical Analysis of Williamson-Micropolar Nanofluid Flow Through Porous
           Rotatory Surface with Slip Boundary Conditions

    • Free pre-print version: Loading...

      Abstract: Abstract A rotating porous surface characterized by the Darcy–Forchheimer model upon which the Williamson micropolar nanofluid discharge occurs is examined to explore the effects of such flow and heat transferring capacity. The magnetic field is also introduced in this non-Newtonian fluid flow to control the fluid motion. Nanofluid is specified by taking the thermal properties of blood and \(\hbox {Fe}_3\hbox {O}_4\) particles. The mathematical structure of the problem is analyzed by considering assumptions used in fluid flow theories with velocity and thermal slip boundary conditions. The governing mathematical equations are simplified by applying similarity transformation variables. The upshots of the current study are obtained by utilizing the bvp4c solver in MATLAB. The micropolar parameter helps in escalating fluid velocity and Nusselt number and enhancing thermal transmission. The outcomes of solutions are plotted through graphs and tables by varying engrossed parameters, and then the observed changes are discussed and highlighted.
      PubDate: 2022-05-13
       
  • Double Diffusive Casson Fluid Flow, Heat and Mass Transfer due to Porous
           Media with Effects of Richardson Number and Thermal Radiation

    • Free pre-print version: Loading...

      Abstract: Abstract The present paper investigates the combined impacts of Biot number and Richardson number on Casson fluid stream with radiating porous media on flow, heat and mass transfer with convective boundary conditions. The governing flow equations are reduced into ODE’s by applying similarity equations. Matlab is used to solve the reduced equations numerically. The focus of present paper is to study the effects of various constraint like porous parameter and thermal radiation on Casson mixed convection of Richardson and Biot number on stream, energy and mass transfer. Also, the energy transformation increases with rise in thermal radiation is observed. Tables and graphs are used to identify and analyse the impact of relevant limitations on various flow parameters.
      PubDate: 2022-05-13
       
  • ABC Fractional Order Vaccination Model for Covid-19 with Self-Protective
           Measures

    • Free pre-print version: Loading...

      Abstract: Abstract A mathematical model delineating the control strategies in transference of Covid-19 pandemic is examined through Atangana–Baleanu Caputo type fractional derivatives. The total count of people under observation is classified into Susceptible, Vaccinated, Infected and Protected groups (SVIP). The designed model studies the efficiency of vaccination and personal precautions incorporated qualitatively by every individual via fixed point theorem. Stability of the system has been investigated with spectral characterisation of Ulam Hyer’s kind. Numerical interpolation has been derived by Adam’s semi-analytical technique and we have approximated the solution. We have proved the theoretical analysis through graphical simulations that vaccination and self protective interventions are the significant role to decrease the contagious expansion of the virus among the people in process.
      PubDate: 2022-05-12
       
  • Application of Two-Dimensional Fibonacci Wavelets in Fractional Partial
           Differential Equations Arising in the Financial Market

    • Free pre-print version: Loading...

      Abstract: Abstract This manuscript provides an efficient and high-accuracy computational technique for solving fractional Black–Scholes equations (FB–SEs) arising in the financial market. In order to find an accurate solution of the mentioned equations, we use the collocation method through the two-dimensional Fibonacci wavelets (2D-FWs). To carry out the scheme, we firstly present 2D-FWs. Then, Riemann–Liouville pseudo-operational matrix for 1 & 2D-FW are achieved. RL pseudo-operational matrix for 2D-FWs and the collocation technique are employed to reduce the mentioned problem into a system of algebraic equations. Moreover, the convergence of the approximate solution to the exact solution is proven by providing an upper bound of error estimate. To reveal the performance and accuracy of the developed method, some numerical experiments are provided. Moreover, we present a brief bibliometric analysis and scientific trends to quantitatively measure research results on considered equations.
      PubDate: 2022-05-10
       
  • Coupled Numerical Scheme for Vascular Fluid-Tube Interaction using Large
           Deformation Theory

    • Free pre-print version: Loading...

      Abstract: Abstract A methodological approach is elaborated to study the vascular fluid-tube interaction under pulsatile blood flow within an asymmetrical nonlinear aneurysm and large deformation models. The aneurysm dynamics were modeled using a simplified Lagrangian nonlinear system describing the arterial wall motion with large deformation. The flow is governed by the Navier-Stokes equations in two-dimensional domain. A semi-implicit splitting scheme coupled with the finite difference method is developed to solve the flow equation in an irregular domain using a mesh transformation. On the other hand, the wall equations are solved using the Runge-Kutta method combined with the shooting technique by reducing the resulted boundary value problem to an initial value problem. Rigid and elastic aneurysms are considered and the effect of various geometrical and fluid parameters on the flow are investigated, mainly the Reynolds number, the aneurysm length and height. The study focused on the effect of the asymmetric curvatures of the tube walls and their deformations due to the pulsatile flow. The flow is examined under a steady inlet flow as well as under a pulsatile one for various aneurysm forms. The obtained numerical results validate the fluid and structure solvers and demonstrate significant differences between the rigid and elastic models of the structure as well as the effect of the asymmetric propriety of the arterial aneurysm.
      PubDate: 2022-05-09
       
  • A Bi-level Multi-objective Programming on Data Envelopment Analysis by
           Penalty Approach

    • Free pre-print version: Loading...

      Abstract: Abstract The aim of this paper is to evaluate the structure of a bi-level system, which consists of multiple leaders at the first level and multiple followers at the second. We integrate the bi-level programming and Data Envelopment Analysis with multiple leaders and followers. The proposed model differs from the existing bi-level Data Envelopment Analysis models in that we use a penalty function for evaluating the cost efficiency instead of the Kuhn–Tucker conditions. So, we first explain the bi-level linear multi-objective programming problem and then utilize an exact penalty method to evaluate the cost efficiencies of decision-making units with multiple leaders and followers. One of the features of our proposed method is that it reduces the number of nonlinear constraints and increases the computational speed compared to existing computational methods. Finally, to demonstrate the efficiency of our method, we provide a numerical example.
      PubDate: 2022-05-09
       
  • Global Stability and Numerical Analysis of a Compartmental Model of the
           Transmission of the Hepatitis A Virus (HAV): A Case Study in Tunisia

    • Free pre-print version: Loading...

      Abstract: Abstract This paper deals with the transmission and spread of the hepatitis A virus in central west Tunisia (the city of Thala). The target of this framework is to determine the global stability of a SEIRD epidemiological model where the infectious compartment is split into symptomatic and asymptomatic compartments. We study the global stability of the equilibrium state using the Lyapunov function which depends on the value of the basic reproduction number \(R_0\) . Therefore, we prove that when \(R_0<1\) , the disease-free equilibrium (DFE) is globally stable, but when \(R_0>1\) , the DFE is unstable, and therefore the the endemic equilibrium is globally stable.
      PubDate: 2022-05-07
       
  • Local Convergence of a Seventh Order Derivative-Free Method for Solving
           Nonlinear Equations in Banach Spaces

    • Free pre-print version: Loading...

      Abstract: Abstract This manuscript presents the study of local convergence of a seventh order derivative free method in Banach spaces. Earlier study showed the convergence of method using derivatives up to fifth order and only in the n-dimensional Euclidean space. Domain of convergence, computable error bounds and uniqueness of the solution were not studied earlier, thereby limiting the applicability of the method. In present study we focus on these problems and extended the method in more general setting of a Banach space using hypothesis only on the first derivative. Numerical examples are presented to verify the theoretical results.
      PubDate: 2022-05-05
       
  • Cost Optimization of the Queueing System with Degrading Service Rate,
           Bernoulli Vacation, and a Regular Vacation After Fixed Services

    • Free pre-print version: Loading...

      Abstract: Abstract Due to the continuous work, degradation in the working capacity of machines and servers is an inevitable phenomenon. To analyze this type of situation in queueing systems, we considered the degradation in the service rate of the server. For the maintenance purpose, vacation is given after completion of a threshold number of services. After maintenance, the server will start working in the fresh mode, that is, with the initial service rate. The impatient behavior of customers and unreliability of the server are also included, which make our model more realistic. We derived the stability condition for this model and found out the steady state probabilities using matrix geometric method. All the system performance measures are calculated. An expected cost function is constructed and is optimized using the particle swarm optimization method. Effects of degrading service rate as well as breakdown rate and vacation rate are studied on the key measures and the expected cost function.
      PubDate: 2022-05-03
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 3.230.142.168
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-