Subjects -> EDUCATION (Total: 2507 journals)
    - ADULT EDUCATION (24 journals)
    - COLLEGE AND ALUMNI (10 journals)
    - E-LEARNING (37 journals)
    - EDUCATION (2141 journals)
    - HIGHER EDUCATION (158 journals)
    - INTERNATIONAL EDUCATION PROGRAMS (4 journals)
    - ONLINE EDUCATION (41 journals)
    - SCHOOL ORGANIZATION (14 journals)
    - SPECIAL EDUCATION AND REHABILITATION (40 journals)
    - TEACHING METHODS AND CURRICULUM (38 journals)

EDUCATION (2141 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 857 Journals sorted alphabetically
#Tear : Revista de Educação, Ciência e Tecnologia     Open Access   (Followers: 5)
(Pensamiento), (palabra) y obra     Open Access   (Followers: 4)
21st Century Pedagogy     Open Access   (Followers: 12)
@tic. revista d'innovació educativa     Open Access  
Abant İzzet Baysal Üniversitesi Eğitim Fakültesi Dergisi     Open Access   (Followers: 2)
ABDIMAS ALTRUIS : Jurnal Pengabdian Kepada Masyarakat     Open Access  
Abdimas Toddopuli : Jurnal Pengabdian Pada Masyarakat     Open Access   (Followers: 10)
About Campus     Hybrid Journal   (Followers: 9)
Academic Medicine     Hybrid Journal   (Followers: 81)
Academic Psychiatry     Full-text available via subscription   (Followers: 34)
Academic Questions     Hybrid Journal   (Followers: 9)
Academy of Management Learning and Education     Full-text available via subscription   (Followers: 68)
Accounting & Finance     Hybrid Journal   (Followers: 63)
Accounting Education: An International Journal     Hybrid Journal   (Followers: 25)
ACM Transactions on Computing Education (TOCE)     Hybrid Journal   (Followers: 14)
Acta Científica : Ciências Humanas     Open Access   (Followers: 2)
Acta Didactica Norge     Open Access   (Followers: 2)
Acta Educationis Generalis     Open Access   (Followers: 1)
Acta Paedagogica Vilnensia     Open Access   (Followers: 1)
Acta Scientiarum. Education     Open Access  
Action in Teacher Education     Hybrid Journal   (Followers: 90)
Action Learning: Research and Practice     Hybrid Journal   (Followers: 47)
Action Research     Hybrid Journal   (Followers: 53)
Active Learning in Higher Education     Hybrid Journal   (Followers: 396)
Actualidades Pedagógicas     Open Access  
Adelphi series     Hybrid Journal   (Followers: 14)
Adiyaman University Journal of Educational Sciences     Open Access   (Followers: 1)
Administração Educacional     Open Access  
Administration & Society     Hybrid Journal   (Followers: 18)
Administrative Science Quarterly     Full-text available via subscription   (Followers: 275)
Adult Education Quarterly     Hybrid Journal   (Followers: 259)
Advanced Education     Open Access   (Followers: 19)
Advances in Building Education     Open Access   (Followers: 8)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 38)
Advances in High Energy Physics     Open Access   (Followers: 29)
Advances in School Mental Health Promotion     Partially Free   (Followers: 12)
AERA Open     Open Access   (Followers: 14)
Africa Education Review     Hybrid Journal   (Followers: 31)
African Journal of Chemical Education     Open Access   (Followers: 6)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 12)
African Journal of Health Professions Education     Open Access   (Followers: 7)
African Journal of Research in Mathematics, Science and Technology Education     Hybrid Journal   (Followers: 13)
African Journal of Teacher Education     Open Access   (Followers: 4)
Agora     Full-text available via subscription   (Followers: 6)
AGORA Magazine     Open Access   (Followers: 1)
Ahmad Dahlan Journal of English Studies     Open Access   (Followers: 4)
AIDS Education and Prevention     Full-text available via subscription   (Followers: 9)
Ainedidaktiikka     Open Access  
Akademos     Open Access   (Followers: 2)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 4)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access   (Followers: 1)
Aksis : Jurnal Pendidikan Bahasa dan Sastra Indonesia     Open Access  
Al-Athfaal : Jurnal Ilmiah Pendidikan Anak Usia Dini     Open Access   (Followers: 2)
Al-Bahith Journal     Open Access   (Followers: 1)
Al-Fikrah     Open Access   (Followers: 3)
Al-Idarah : Jurnal Kependidikan Islam     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Al-Mudarris : Journal of Education     Open Access   (Followers: 3)
Al-Tadris : Jurnal Pendidikan Bahasa Arab     Open Access  
Al-Tadzkiyyah : Jurnal Pendidikan Islam     Open Access  
Al-Tanzim : Jurnal Manajemen Pendidikan Islam     Open Access  
Al.Qadisiya journal for the Sciences of Physical Education     Open Access  
Alberta Journal of Educational Research     Full-text available via subscription   (Followers: 9)
Aldaba     Open Access   (Followers: 1)
Alexandria : Revista de Educação em Ciência e Tecnologia     Open Access  
Alotrop     Open Access  
Alsic : Apprentissage des Langues et Systèmes d'Information et de Communication     Open Access   (Followers: 18)
Alteridad     Open Access  
Ambiente & Educação : Revista de Educação Ambiental     Open Access  
American Annals of the Deaf     Full-text available via subscription   (Followers: 16)
American Educational Research Journal     Hybrid Journal   (Followers: 259)
American Journal of Business Education     Open Access   (Followers: 17)
American Journal of Distance Education     Hybrid Journal   (Followers: 35)
American Journal of Education     Full-text available via subscription   (Followers: 295)
American Journal of Educational Research     Open Access   (Followers: 76)
American Journal of Health Education     Hybrid Journal   (Followers: 39)
American Journal of Physics     Full-text available via subscription   (Followers: 58)
American String Teacher     Full-text available via subscription   (Followers: 3)
Ana Dili Eğitimi Dergisi / Journal of Mother Tongue Education     Open Access   (Followers: 1)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 4)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access   (Followers: 8)
Annales Universitatis Mariae Curie-Sklodowska, sectio N – Educatio Nova     Open Access  
Annali dell'Universita di Ferrara     Hybrid Journal  
Annals of Dyslexia     Hybrid Journal   (Followers: 11)
Annals of Modern Education     Full-text available via subscription   (Followers: 6)
Antistasis : An Open Educational Journal     Open Access   (Followers: 9)
Anuario Pilquen : Sección Divulgación Científica     Open Access  
Apertura. Revista de innovación educativa‏     Open Access   (Followers: 3)
Ápice : Revista de Educación Científica     Open Access  
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 19)
Applied Measurement in Education     Hybrid Journal   (Followers: 11)
Aprender     Open Access  
AR-RIAYAH : Jurnal Pendidikan Dasar     Open Access  
Arabia     Open Access   (Followers: 1)
Arabiyatuna : Jurnal Bahasa Arab     Open Access   (Followers: 1)
Archivos de Ciencias de la Educación     Open Access   (Followers: 2)
Areté, Revista Digital del Doctorado en Educación de la Universidad Central de Venezuela     Open Access   (Followers: 1)
Arrancada     Open Access  
Ars Educandi     Open Access  
Art Design & Communication in Higher Education     Hybrid Journal   (Followers: 30)
Art Education     Hybrid Journal   (Followers: 1)
Arte e Investigación     Open Access   (Followers: 1)
Arts and Humanities in Higher Education     Hybrid Journal   (Followers: 49)
Arts Education Policy Review     Hybrid Journal   (Followers: 6)
Artseduca : Revista electrónica de educación en las ARTES     Open Access   (Followers: 1)
ASHE Higher Education Reports     Hybrid Journal   (Followers: 21)
Asia Pacific Education Review     Hybrid Journal   (Followers: 13)
Asia Pacific Journal of Education     Hybrid Journal   (Followers: 27)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 16)
Asia-Pacific Journal of Teacher Education     Hybrid Journal   (Followers: 28)
Asia-Pacific Science Education     Open Access   (Followers: 1)
Asian Association of Open Universities Journal     Open Access   (Followers: 1)
Asian Education and Development Studies     Hybrid Journal   (Followers: 7)
Asian Journal of Distance Education     Open Access   (Followers: 5)
Asian Journal of Education and Social Studies     Open Access   (Followers: 3)
Asian Journal of English Language Teaching     Full-text available via subscription   (Followers: 19)
Asian Journal of Legal Education     Full-text available via subscription   (Followers: 4)
Asian-Pacific Journal of Second and Foreign Language Education     Open Access   (Followers: 5)
ASp     Open Access   (Followers: 4)
Assessing Writing     Hybrid Journal   (Followers: 17)
Assessment & Evaluation in Higher Education     Hybrid Journal   (Followers: 258)
Assessment for Effective Intervention     Hybrid Journal   (Followers: 15)
Assessment in Education: Principles, Policy & Practice     Hybrid Journal   (Followers: 50)
Assessment Update     Hybrid Journal   (Followers: 7)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5)
At-Ta'dib Jurnal Kependidikan Islam     Open Access  
At-Taqaddum     Open Access  
At-Turats     Open Access  
ATENA Didaktik     Open Access   (Followers: 5)
Atenas : Revista Científico Pedagógica     Open Access   (Followers: 1)
Athenea Digital     Open Access  
ATIKAN : Jurnal Kajian Pendidikan (Journal of Educational Studies)     Open Access  
Atthulab : Islamic Religion Teaching and Learning Journal     Open Access   (Followers: 1)
Aula Abierta     Open Access   (Followers: 2)
Aula de Encuentro     Open Access  
Australasian Journal of Educational Technology     Open Access   (Followers: 20)
Australasian Journal of Engineering Education     Hybrid Journal   (Followers: 3)
Australasian Journal of Gifted Education     Full-text available via subscription   (Followers: 8)
Australasian Marketing Journal (AMJ)     Hybrid Journal   (Followers: 6)
Australian Art Education     Full-text available via subscription   (Followers: 8)
Australian Educational Researcher     Hybrid Journal   (Followers: 34)
Australian Journal of Adult Learning     Full-text available via subscription   (Followers: 16)
Australian Journal of Career Development     Hybrid Journal   (Followers: 5)
Australian Journal of Dyslexia and Other Learning Difficulties     Full-text available via subscription   (Followers: 10)
Australian Journal of Education     Hybrid Journal   (Followers: 51)
Australian Journal of Environmental Education     Full-text available via subscription   (Followers: 11)
Australian Journal of Indigenous Education, The     Full-text available via subscription   (Followers: 15)
Australian Journal of Learning Difficulties     Hybrid Journal   (Followers: 7)
Australian Journal of Music Education     Full-text available via subscription   (Followers: 6)
Australian Journal of Public Administration     Hybrid Journal   (Followers: 473)
Australian Journal of Teacher Education     Open Access   (Followers: 31)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 7)
Australian Screen Education     Full-text available via subscription   (Followers: 3)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 4)
Australian Universities' Review, The     Full-text available via subscription   (Followers: 4)
Autism     Hybrid Journal   (Followers: 356)
Avaliação : Revista da Avaliação da Educação Superior (Campinas)     Open Access  
Azalea: Journal of Korean Literature & Culture     Full-text available via subscription   (Followers: 4)
Bahastra     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 2)
Baltic Journal of Career Education and Management     Open Access   (Followers: 1)
Barn : Forskning om barn og barndom i Norden     Open Access   (Followers: 1)
Basastra : Jurnal Bahasa, Sastra, dan Pengajarannya     Open Access   (Followers: 1)
BC TEAL Journal     Open Access  
Becoming : Journal of the Georgia Middle School Association     Open Access   (Followers: 3)
Behavioural Sciences Undergraduate Journal     Open Access   (Followers: 6)
BELAJEA : Jurnal Pendidikan Islam     Open Access  
BELIA : Early Childhood Education Papers     Open Access   (Followers: 10)
BELT - Brazilian English Language Teaching Journal     Open Access   (Followers: 5)
Berkeley Review of Education     Open Access   (Followers: 10)
Beyond Behavior     Hybrid Journal   (Followers: 1)
Biblioteca Escolar em Revista     Open Access  
Biblioteka i Edukacja     Open Access   (Followers: 4)
Bio-Lectura     Open Access  
BIODIK : Jurnal Ilmiah Pendidikan Biologi     Open Access   (Followers: 1)
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access   (Followers: 1)
Bioeduscience     Open Access   (Followers: 3)
Bioma : Jurnal Ilmiah Biologi     Open Access  
Biomedical Engineering Education     Hybrid Journal   (Followers: 2)
Biosaintifika : Journal of Biology & Biology Education     Open Access   (Followers: 9)
Biosfer : Jurnal Biologi dan Pendidikan Biologi     Open Access  
Biosfer : Jurnal Tadris Biologi     Open Access  
BISE : Jurnal Pendidikan Bisnis dan Ekonomi     Open Access   (Followers: 1)
Biuletyn Historii Wychowania     Open Access  
BMC Medical Education     Open Access   (Followers: 50)
BMJ Simulation & Technology Enhanced Learning     Hybrid Journal   (Followers: 13)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletim Técnico do Senac     Open Access  
Bordón : Revista de Pedagogía     Open Access   (Followers: 1)
British (Jurnal Bahasa dan Sastra Inggris)     Open Access   (Followers: 1)
British Educational Research Journal     Hybrid Journal   (Followers: 280)
British Journal of Educational Studies     Hybrid Journal   (Followers: 212)
British Journal of Educational Technology     Hybrid Journal   (Followers: 210)
British Journal of Music Education     Hybrid Journal   (Followers: 28)
British Journal of Religious Education     Hybrid Journal   (Followers: 11)
British Journal of Sociology of Education     Hybrid Journal   (Followers: 66)
British Journal of Special Education     Hybrid Journal   (Followers: 59)
British Journal of Visual Impairment     Hybrid Journal   (Followers: 14)

        1 2 3 4 5 6 7 8 | Last

Similar Journals
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Annali dell'Universita di Ferrara
Journal Prestige (SJR): 0.429
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0430-3202 - ISSN (Online) 1827-1510
Published by Springer-Verlag Homepage  [2658 journals]
  • Generalization of Titchmarsh theorem in the deformed Hankel setting

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      Abstract: In this paper, by using the generalized symmetric difference \(\Delta _{h}^{m}\) of order m and step \(h>0\) , we obtain a generalization of Titchmarsh’s Theorem for deformed Hankel transform.
      PubDate: 2021-10-11
       
  • Multiplicative Lie triple derivation of triangular 3-matrix rings

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      Abstract: Let \({\mathfrak {T}}={\mathfrak {T}}_3(\mathrm {R}_i, \mathrm {M}_{ij})\) be a triangular 3-matrix ring. In the present paper, we study of multiplicative Lie triple derivation on triangular 3-matrix rings and prove that every multiplicative Lie triple derivation on triangular 3-matrix rings can be written as a sum of an additive derivation and a center valued map vanishing at each second commutator.
      PubDate: 2021-09-25
       
  • On an operator preserving inequalities between polynomials

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      Abstract: Let P(z) be a polynomial of degree at most n. We consider an operator N, which carries a polynomial P(z) into $$\begin{aligned} N[P](z):=\sum \limits _{j=0}^{m}\lambda _j\bigg (\frac{nz}{2}\bigg )^j\frac{P^{(j)}(z)}{j!}, \end{aligned}$$ where \(\lambda _0,\lambda _1,\ldots ,\lambda _m\) are such that all the zeros of $$\begin{aligned} u(z)=\sum \limits _{j=0}^{m}\left( {\begin{array}{c}n\\ j\end{array}}\right) \lambda _jz^j \end{aligned}$$ lie in the half plane $$\begin{aligned} z \le \bigg z-\frac{n}{2}\bigg . \end{aligned}$$ In this paper, we estimate the minimum and maximum modulii of N[P(z)] on \( z =1\) with restrictions on the zeros of P(z) and thereby obtain compact generalizations of some well known polynomial inequalities.
      PubDate: 2021-09-20
       
  • On the irreducibility of the extensions of Burau and Gassner
           representations

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      Abstract: Let \(Cb_n\) be the group of basis conjugating automorphisms of a free group \(\mathbb {F}_n\) , and \(C_n\) the group of conjugating automorphisms of \(\mathbb {F}_n\) . Valerij G. Bardakov has constructed representations of \(Cb_n\) , \(C_n\) in the groups \(GL_n(\mathbb {Z}[{t_1}^{\pm 1}, \ldots ,{t_n}^{\pm 1}])\) and in \(GL_n(\mathbb {Z}[{t}^{\pm 1}])\) respectively, where \(t_1, \ldots , t_n, t\) are indeterminate variables. We show that these representations are reducible and we determine the irreducible components of the representations in \(GL_n(\mathbb {C})\) , which are obtained by giving values to the variables above. Next, we consider the tensor product of the representations of \(Cb_n\) , \(C_n\) and study their irreduciblity in the case \(n=3\) .
      PubDate: 2021-09-18
       
  • A family of derivative-free methods for solving nonlinear equations

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      Abstract: We propose a two-parameter derivative-free family of methods with memory of convergence order 1.84 for finding the real roots of nonlinear equations. The new methods require only one function evaluation per iteration, so efficiency index is also 1.84. The process is carried out by approximating the derivative in Newton’s iteration using general quadratic equation \(\alpha u^2+\beta v^2+\alpha _1 u+\beta _1 v+\delta =0\) in terms of coefficients \(\alpha , \beta \) . Various options of \(\alpha , \beta \) correspond to various quadratic forms viz. circle, ellipse, hyperbola and parabola. The application of new methods is validated on Kepler’s problem, Isentropic supersonic flow problem, L-C-R circuit problem and Population growth problem. In addition, a comparison of the performance of new methods with existing methods of same nature is also presented to check the consistency.
      PubDate: 2021-09-13
       
  • Attractors for Navier–Stokes equation with fractional operator in
           the memory term

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      Abstract: In this paper, we study the long-time dynamics of Navier–Stokes equations with a fractional operator in the memory term and external forces $$\begin{aligned} \partial _tu-\nu \Delta u +\displaystyle \int _{0}^{\infty }g(s)(-\Delta )^\alpha u(t-s)\,\mathrm{d}s +(u\cdot \nabla )u+\nabla p=\epsilon f(x) \end{aligned}$$ on a bounded domain \(\Omega \) in \(\mathbb {R}^2\) with smooth boundary. We establish the existence of global attractor for the associated dynamical system. We prove the continuity of global attractors with respect to forcing parameter \(\epsilon \) in a residual dense set. Moreover, the upper-semicontinuity with respect to parameter \(\epsilon \) of global attractors is shown.
      PubDate: 2021-08-21
       
  • Stability analysis for a multi-layer Hele-Shaw displacement

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      Abstract: A well known approximation for the displacement of two immiscible fluids in a porous medium is the Hele-Shaw model. In experiments it was observed that a liquid with variable viscosity, introduced between the two initial fluids, can minimize the Saffman-Taylor instability. In some works an attempt was made to replace the variable viscosity liquid with a sequence of several immiscible liquids with constant viscosities. We prove that the linear stability analysis of this multi-layer Hele-Shaw model leads us to an ill-posed problem.
      PubDate: 2021-08-11
       
  • Initial value problems of nonlinear fractional differential equations with
           two orders

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      Abstract: In this paper, we use the fixed point theory to obtain the existence and uniqueness of solutions for a class of nonlinear fractional differential equations. Two examples are given to illustrate this work.
      PubDate: 2021-08-07
       
  • Helicity and regularity of weak solutions to 3D Navier–Stokes
           equations

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      Abstract: We show that a Leray–Hopf weak solution to the three-dimensional Navier–Stokes the initial value problem is regular in (0, T] if \(\Vert \nabla u_0^+\Vert _2\) (or \(\Vert \nabla u_0^-\Vert _2\) ) for initial value \(u_0\) and \(\max \{\frac{d{\mathcal H}}{dt},0\}\) (or \(\max \{-\frac{d{\mathcal H}}{dt},0\}\) ) are suitably small depending on the initial kinetic energy and viscosity, where \(u_0^+=\int _0^{\infty } dE_\lambda u_0\) , \(u_0^-=\int _{-\infty }^0 dE_\lambda u_0\) , \(\{E_\lambda \}_{\lambda \in {\mathbb R}}\) is the spectral resolution of the \(\mathrm{curl}\) operator and \({\mathcal H}\equiv \int _{\mathbb R^3}u\cdot \mathrm{curl} u\,dx\) is the helicity of the fluid flow. The results suggest that the helicity change rate rather than the magnitude of the helicity itself affects regularity of the viscous incompressible flows. More precisely, an initially regular viscous incompressible flow with suitably small positive or negative maximal helical component does not lose its regularity as long as the total helical behavior of the flow with respect to time is not decreasing, or even weakened at a moderate rate in accordance with the initial kinetic energy and viscosity.
      PubDate: 2021-07-31
       
  • Rings with fine nilpotents

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      Abstract: A nonzero sum of a unit and a nilpotent element in a ring is called a fine element. This is a study of rings in which every nonzero nilpotent is fine, which we call NF rings.
      PubDate: 2021-07-06
       
  • Space curves, X-ranks and cuspidal projections

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      Abstract: Let \(X\subset \mathbb {P}^3\) be an integral and non-degenerate curve. We say that \(q\in \mathbb {P}^3\setminus X\) has X-rank 3 if there is no line \(L\subset \mathbb {P}^3\) such that \(q\in L\) and \(\#(L\cap X)\ge 2\) . We prove that for all hyperelliptic curves of genus \(g\ge 5\) there is a degree \(g+3\) embedding \(X\subset \mathbb {P}^3\) with exactly \(2g+2\) points with X-rank 3 and another embedding without points with X-rank 3 but with exactly \(2g+2\) points \(q\in \mathbb {P}^3\) such that there is a unique pair of points of X spanning a line containing q. We also prove the non-existence of points of X-rank 3 for general curves of bidegree (a, b) in a smooth quadric (except in known exceptional cases) and we give lower bounds for the number of pairs of points of X spanning a line containing a fixed \(q\in \mathbb {P}^3\setminus X\) . For all integers \(g\ge 5\) , \(x\ge 0\) we prove the existence of a nodal hyperelliptic curve X with geometric genus g, exactly x nodes, \(\deg (X) = x+g+3\) and having at least \(x+2g+2\) points of X-rank 3.
      PubDate: 2021-07-01
       
  • Asymptotic modeling of the behavior of a reinforced plate governed by a
           full von Karman thermo-elastic system with nonlinear thermal coupling

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      Abstract: In this paper, we deal with the asymptotic modeling of the behavior of a reinforced rectangular plate with a thin layer of high thermal conductivity. We focus on a thermo-elastic model described by a set of nonlinear time dependent partial differential equations, accounting for nonlinear mechanical and nonlinear thermal coupling. Our aim is to model this junction and reproduce the effect of the thin body by means of approximate boundary conditions, obtained by an asymptotic analysis with respect to the thickness of this latter. The study is carried out for two kinds of layers: Stiff and soft. Different limit behaviors occur according to the rigidity or the softness of this latter.
      PubDate: 2021-06-12
       
  • Space-time decay rate for Navier–Stokes equations with power-law
           type nonlinear viscous fluid

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      Abstract: We investigate the space-time decay properties for strong solutions to the 3D Navier–Stokes equations with power-law type nonlinear viscous fluid. Based on the temporal decay results for this equation, we find that one can obtain decay estimate of the weight for the velocity field u by direct weighted energy estimate.
      PubDate: 2021-05-31
       
  • On the decay of a nonlinear wave equation with delay

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      Abstract: In this paper we consider wave equation with logarithmic nonlinearity and distributive internal delay. We establish the local existence result using the semigroup theory whereas the global existence by the well-depth method. Finally, under suitable assumptions on the weight of the delay and that of frictional damping, we prove that the system is exponentially stable.
      PubDate: 2021-05-26
       
  • Approximation by modified Szász-Kantorovich type operators based on
           Brenke type polynomials

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      Abstract: In this paper, a modification of Szász-Kantorovich type operators based on Brenke-type polynomials is introduced, and the convergence properties of the proposed operators with the help of Korovkin’s theorem are discussed. The order of convergence of these operators with the aid of classical and second-order modulus of continuity is studied. A Voronovkaja-type theorem is also established. Lastly, the rate of convergence and error estimation of these operators compared with the existing operators with the help of some graphs and tables using Mathematica.
      PubDate: 2021-05-22
       
  • Perturbation bounds for angular sectors of spectra of unbounded operators

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      Abstract: Let A and \(\tilde{A}\) be linear unbounded in general operators on a Hilbert space. We consider the following problem: let the spectrum of A lie in some angular sector. In what sector the spectrum of \(\tilde{A}\) lies, if A and \(\tilde{A}\) are sufficiently “close”' Illustrative examples are also presented.
      PubDate: 2021-05-01
       
  • Exponential stability of thermoelastic Timoshenko system with
           Cattaneo’s law

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      Abstract: In this paper, we consider a one dimensional thermoelastic Timoshenko system where the thermal coupling is acting on both the shear force and the bending moment, and the heat flux is given by Cattaneo’s law. We establish an exponential stability result irrespective of the values of the coefficients of the system.
      PubDate: 2021-05-01
       
  • Some inequalities for polynomials with restricted zeros

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      Abstract: By using the boundary Schwarz lemma, it was shown by Dubinin (J Math Sci 143:3069–3076, 2007) that if P(z) is a polynomial of degree n having all its zeros in \( z \le 1,\) then for all z on \( z =1\) for which \(P(z)\ne 0,\) $$\begin{aligned} Re\bigg (\frac{zP^{\prime }(z)}{P(z)}\bigg )\ge \frac{n}{2}+\frac{1}{2}\left( \frac{ a_n - a_0 }{ a_n + a_0 }\right) . \end{aligned}$$ In this paper, by using simple techniques we generalize the above inequality, thereby give a simple proof of the above inequality. As an application of our result, we also obtain sharp refinements of some known results due to Malik (J Lond Math Soc 1:57–60, 1969), Aziz and Rather (Math Ineq Appl 1:231–238, 1998). These results take into account the size of the constant term and the leading coefficient of the polynomial P(z).
      PubDate: 2021-05-01
       
  • An approach to H-supplemented modules via noncosingular modules

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      Abstract: Let M be a module over a ring R. We call M, \(\gamma \) -H-supplemented provided for every submodule N of M there is a direct summand D of M such that \(M=N+X\) if and only if \(M=D+X\) for every submodule X of M with M/X noncosingular. We prove that M is \(\gamma \) -H-supplemented if and only if for every submodule N of M there exists a direct summand D of M such that \((N+D)/N\ll _{\gamma } M/N\) and \((N+D)/D\ll _{\gamma } M/D\) .
      PubDate: 2021-05-01
       
  • Approximating multiple integrals of continuous functions by $$\delta $$
           δ -uniform curves

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      Abstract: We present a method to approximate, with controlled and arbitrarily small error, multiple intregrals over the unit cube \([0,1]^{d}\) by a single variable integral over [0, 1]. For this, we use the so called \(\delta \) -uniform curves, which are a particular case of \(\alpha \) -dense curves. Our main result improves and extends other existing methods on this subject.
      PubDate: 2021-05-01
       
 
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