Subjects -> EDUCATION (Total: 2411 journals)
    - ADULT EDUCATION (24 journals)
    - COLLEGE AND ALUMNI (10 journals)
    - E-LEARNING (38 journals)
    - EDUCATION (2043 journals)
    - HIGHER EDUCATION (158 journals)
    - INTERNATIONAL EDUCATION PROGRAMS (4 journals)
    - ONLINE EDUCATION (42 journals)
    - SCHOOL ORGANIZATION (14 journals)
    - SPECIAL EDUCATION AND REHABILITATION (40 journals)
    - TEACHING METHODS AND CURRICULUM (38 journals)

EDUCATION (2043 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: 1)
(Pensamiento), (palabra) y obra     Open Access   (Followers: 2)
21. Yüzyılda Eğitim Ve Toplum Eğitim Bilimleri Ve Sosyal Araştırmalar Dergisi     Open Access  
21st Century Pedagogy     Open Access   (Followers: 5)
Abant İzzet Baysal Üniversitesi Eğitim Fakültesi Dergisi     Open Access  
ABDIMAS ALTRUIS : Jurnal Pengabdian Kepada Masyarakat     Open Access  
Abdimas Toddopuli : Jurnal Pengabdian Pada Masyarakat     Open Access  
About Campus     Hybrid Journal   (Followers: 7)
Academic Medicine     Hybrid Journal   (Followers: 74)
Academic Psychiatry     Full-text available via subscription   (Followers: 27)
Academy of Educational Leadership Journal     Full-text available via subscription   (Followers: 53)
Academy of Management Learning and Education     Full-text available via subscription   (Followers: 57)
Accounting & Finance     Hybrid Journal   (Followers: 30)
Accounting Education: An International Journal     Hybrid Journal   (Followers: 13)
ACM Transactions on Computing Education (TOCE)     Hybrid Journal   (Followers: 7)
Acta Científica : Ciências Humanas     Open Access  
Acta Didactica Norge     Open Access   (Followers: 2)
Acta Educationis Generalis     Open Access  
Acta Paedagogica Vilnensia     Open Access  
Acta Scientiarum. Education     Open Access  
Action in Teacher Education     Hybrid Journal   (Followers: 61)
Action Learning: Research and Practice     Hybrid Journal   (Followers: 44)
Actualidades Pedagógicas     Open Access  
Adelphi series     Hybrid Journal   (Followers: 13)
Adiyaman University Journal of Educational Sciences     Open Access  
Administração Educacional     Open Access  
Advanced Education     Open Access   (Followers: 11)
Advances in Arts, Social Sciences and Education Research     Open Access   (Followers: 16)
Advances in Building Education     Open Access   (Followers: 4)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 33)
Advances in High Energy Physics     Open Access   (Followers: 22)
Advances in School Mental Health Promotion     Partially Free   (Followers: 7)
Africa Education Review     Hybrid Journal   (Followers: 26)
African Journal of Chemical Education     Open Access   (Followers: 5)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 7)
African Journal of Health Professions Education     Open Access   (Followers: 5)
African Journal of Research in Mathematics, Science and Technology Education     Hybrid Journal   (Followers: 11)
African Journal of Teacher Education     Open Access   (Followers: 4)
Agora     Full-text available via subscription   (Followers: 3)
AGORA Magazine     Open Access   (Followers: 1)
Ahmad Dahlan Journal of English Studies     Open Access   (Followers: 2)
AIDS Education and Prevention     Full-text available via subscription   (Followers: 8)
Ainedidaktiikka     Open Access  
Akademos     Open Access   (Followers: 2)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access  
Aksis : Jurnal Pendidikan Bahasa dan Sastra Indonesia     Open Access  
Al-Athfaal : Jurnal Ilmiah Pendidikan Anak Usia Dini     Open Access  
Al-Bahith Journal     Open Access  
Al-Idarah : Jurnal Kependidikan Islam     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Al-Mudarris : Journal of Education     Open Access   (Followers: 2)
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: 1)
Aldaba     Open Access  
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: 12)
Alteridad     Open Access  
Ambiente & Educação : Revista de Educação Ambiental     Open Access  
American Annals of the Deaf     Full-text available via subscription   (Followers: 13)
American Journal of Business Education     Open Access   (Followers: 14)
American Journal of Distance Education     Hybrid Journal   (Followers: 30)
American Journal of Education     Full-text available via subscription   (Followers: 162)
American Journal of Educational Research     Open Access   (Followers: 55)
American Journal of Health Education     Hybrid Journal   (Followers: 35)
American Journal of Physics     Full-text available via subscription   (Followers: 57)
Ana Dili Eğitimi Dergisi / Journal of Mother Tongue Education     Open Access   (Followers: 1)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 1)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access  
Annales Universitatis Mariae Curie-Sklodowska, sectio N – Educatio Nova     Open Access  
Annali dell'Universita di Ferrara     Hybrid Journal  
Annals of Dyslexia     Hybrid Journal   (Followers: 9)
Annals of Modern Education     Full-text available via subscription   (Followers: 5)
Antistasis : An Open Educational Journal     Open Access   (Followers: 1)
Anuario Pilquen : Sección Divulgación Científica     Open Access  
Apertura. Revista de innovación educativa‏     Open Access   (Followers: 1)
Ápice : Revista de Educación Científica     Open Access  
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 15)
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: 1)
Areté, Revista Digital del Doctorado en Educación de la Universidad Central de Venezuela     Open Access  
Arrancada     Open Access  
Ars Educandi     Open Access  
Art Design & Communication in Higher Education     Hybrid Journal   (Followers: 22)
Art Education     Hybrid Journal  
Arts Education Policy Review     Hybrid Journal   (Followers: 4)
Artseduca : Revista electrónica de educación en las ARTES     Open Access  
ASHE Higher Education Reports     Hybrid Journal   (Followers: 18)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12)
Asia Pacific Journal of Education     Hybrid Journal   (Followers: 20)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 15)
Asia-Pacific Journal of Teacher Education     Hybrid Journal   (Followers: 27)
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: 5)
Asian Journal of Distance Education     Open Access   (Followers: 2)
Asian Journal of Education and Social Studies     Open Access   (Followers: 1)
Asian Journal of English Language Teaching     Full-text available via subscription   (Followers: 16)
Asian-Pacific Journal of Second and Foreign Language Education     Open Access   (Followers: 5)
ASp     Open Access  
Assessing Writing     Hybrid Journal   (Followers: 16)
Assessment & Evaluation in Higher Education     Hybrid Journal   (Followers: 125)
Assessment in Education: Principles, Policy & Practice     Hybrid Journal   (Followers: 43)
Assessment Update     Hybrid Journal   (Followers: 5)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 3)
At-Ta'dib Jurnal Kependidikan Islam     Open Access  
At-Taqaddum     Open Access  
At-Turats     Open Access  
ATENA Didaktik     Open Access  
Athenea Digital     Open Access  
ATIKAN : Jurnal Kajian Pendidikan (Journal of Educational Studies)     Open Access  
Aula Abierta     Open Access  
Aula de Encuentro     Open Access  
Australasian Journal of Educational Technology     Open Access   (Followers: 14)
Australasian Journal of Engineering Education     Hybrid Journal   (Followers: 3)
Australasian Journal of Gifted Education     Full-text available via subscription   (Followers: 5)
Australian Art Education     Full-text available via subscription   (Followers: 6)
Australian Educational Researcher     Hybrid Journal   (Followers: 29)
Australian Journal of Adult Learning     Full-text available via subscription   (Followers: 13)
Australian Journal of Dyslexia and Other Learning Difficulties     Full-text available via subscription   (Followers: 7)
Australian Journal of Environmental Education     Full-text available via subscription   (Followers: 9)
Australian Journal of Indigenous Education, The     Full-text available via subscription   (Followers: 13)
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: 230)
Australian Journal of Teacher Education     Open Access   (Followers: 28)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 4)
Australian Screen Education     Full-text available via subscription   (Followers: 2)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 4)
Australian Universities' Review, The     Full-text available via subscription   (Followers: 4)
Azalea: Journal of Korean Literature & Culture     Full-text available via subscription   (Followers: 3)
Bahastra     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 2)
Baltic Journal of Career Education and Management     Open Access  
Barn : Forskning om barn og barndom i Norden     Open Access  
Basastra : Jurnal Bahasa, Sastra, dan Pengajarannya     Open Access  
BC TEAL Journal     Open Access  
Becoming : Journal of the Georgia Middle School Association     Open Access  
Behavioural Sciences Undergraduate Journal     Open Access   (Followers: 1)
BELAJEA : Jurnal Pendidikan Islam     Open Access  
BELIA : Early Childhood Education Papers     Open Access   (Followers: 8)
Berkeley Review of Education     Open Access   (Followers: 10)
Biblioteca Escolar em Revista     Open Access  
Biblioteka i Edukacja     Open Access   (Followers: 4)
Bio-Lectura     Open Access  
BIODIK : Jurnal Ilmiah Pendidikan Biologi     Open Access  
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access   (Followers: 1)
Bioeduscience     Open Access  
Bioma : Jurnal Ilmiah Biologi     Open Access  
Biomedical Engineering Education     Hybrid Journal  
Biosfer : Jurnal Biologi dan Pendidikan Biologi     Open Access  
Biosfer : Jurnal Tadris Biologi     Open Access  
BISE : Jurnal Pendidikan Bisnis dan Ekonomi     Open Access  
Biuletyn Historii Wychowania     Open Access  
BMC Medical Education     Open Access   (Followers: 46)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim Técnico do Senac     Open Access  
Bordón : Revista de Pedagogía     Open Access  
British (Jurnal Bahasa dan Sastra Inggris)     Open Access  
British Educational Research Journal     Hybrid Journal   (Followers: 158)
British Journal of Educational Studies     Hybrid Journal   (Followers: 128)
British Journal of Educational Technology     Hybrid Journal   (Followers: 94)
British Journal of Music Education     Hybrid Journal   (Followers: 18)
British Journal of Religious Education     Hybrid Journal   (Followers: 7)
British Journal of Sociology of Education     Hybrid Journal   (Followers: 57)
British Journal of Special Education     Hybrid Journal   (Followers: 43)
Brock Education : A Journal of Educational Research and Practice     Open Access  
Brookings Trade Forum     Full-text available via subscription   (Followers: 4)
Buckingham Journal of Education     Open Access   (Followers: 7)
Bulletin De L' Association Thaïlandaise Des Professeurs de Français     Open Access  
Business, Management and Education     Open Access   (Followers: 17)
Caderno Brasileiro de Ensino de Física     Open Access  
Caderno de Educação     Open Access  
Caderno Intersaberes     Open Access  
Cadernos de Educação     Open Access  
Cadernos de Estudos e Pesquisa na Educação Básica     Open Access  
Cadernos de Pesquisa     Open Access  
Cadernos de Pesquisa em Educação     Open Access  
Cadmo     Full-text available via subscription  
Cahiers de la recherche sur l'éducation et les savoirs     Open Access   (Followers: 3)
Cakrawala Pendidikan     Open Access  
Calidad en la educación     Open Access   (Followers: 1)
Cambridge Journal of Education     Hybrid Journal   (Followers: 69)
Campbell Systematic Reviews     Open Access   (Followers: 4)
Campus Legal Advisor     Hybrid Journal   (Followers: 2)
Campus Security Report     Hybrid Journal   (Followers: 1)
Canadian and International Education     Open Access   (Followers: 9)
Canadian Journal for New Scholars in Education/ Revue canadienne des jeunes chercheures et chercheurs en éducation     Open Access   (Followers: 7)
Canadian Journal for the Scholarship of Teaching and Learning     Open Access   (Followers: 18)
Canadian Journal for the Study of Adult Education     Open Access   (Followers: 1)
Canadian Journal of Education : Revue canadienne de l'éducation     Open Access   (Followers: 11)
Canadian Journal of Educational Administration and Policy     Open Access  

        1 2 3 4 5 6 7 8 | Last

Similar Journals
Journal Cover
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  [2469 journals]
  • Weak Hopfcity and singular modules

    • Free pre-print version: Loading...

      Abstract: The concept of Hopfian modules has been extensively studied in the literature. In this paper, we introduce and study the notion of \(\delta \) -weakly Hopfian modules. The class of \(\delta \) -weakly Hopfian modules lies properly between the class of Hopfian modules and the class of weakly Hopfian modules. It is shown that over a ring R, every quasi-projective R-module is \(\delta \) -weakly Hopfian iff \(\delta (R)=J(R)\) . We prove that any weak duo module, with zero radical is \(\delta \) -weakly Hopfian. Let M be a module such that M satisfies ascending chain conditions on \(\delta \) -small submodules. Then it is shown that M is \(\delta \) -weakly Hopfian. Some other properties of \(\delta \) -weakly Hopfian modules are also obtained with examples.
      PubDate: 2022-01-08
       
  • Thermal convection with generalized friction

    • Free pre-print version: Loading...

      Abstract: A model for thermal convection with generalized friction is investigated. It is shown that the linear instability threshold is the same as the global stability one. In addition, decay of the energy in the \(L^2\) norm is shown for the perturbation velocity and temperature fields. However, due to the presence of the generalized friction we establish exponential decay in the \(L^{\beta +1}\) norm for the perturbation temperature, where \(\beta >1\) .
      PubDate: 2021-12-17
       
  • Continuous dependence and convergence for a Kelvin–Voigt fluid of
           order one

    • Free pre-print version: Loading...

      Abstract: It is shown that the solution to the boundary - initial value problem for a Kelvin–Voigt fluid of order one depends continuously upon the Kelvin–Voigt parameters, the viscosity, and the viscoelastic coefficients. Convergence of a solution is also shown.
      PubDate: 2021-11-22
      DOI: 10.1007/s11565-021-00381-7
       
  • Two algorithms for solving mixed equilibrium problems and fixed point
           problems in Hilbert spaces

    • Free pre-print version: Loading...

      Abstract: Our study in this paper is focused on mixed equilibrium problems as well as combination with and fixed point problems in real Hilbert spaces. We introduce a new extension of a skew-symmetric bi-functions, called generalized skew-symmetric bi-functions. Two iterative methods based on the subgradient extragradient method is presented and their weak convergence theorems are proved under some mild assumptions. Further, we discuss some numerical examples to demonstrate the applicability of the iterative algorithm. The methods and analysis is new and extend several related result in the literature.
      PubDate: 2021-11-01
      DOI: 10.1007/s11565-021-00380-8
       
  • Strictly hyperbolic Cauchy problems on $${\varvec{{\mathbb {R}}^n}}$$ R n
           with unbounded and singular coefficients

    • Free pre-print version: Loading...

      Abstract: We investigate the behavior of the solutions of a class of certain strictly hyperbolic equations defined on \((0,T]\times {\mathbb {R}}^n\) in relation to a class of metrics on the phase space. In particular, we study the global regularity and decay issues of the solution to an equation with coefficients polynomially bound in x with their x-derivatives and t-derivative of order \(\text {O}(t^{-\delta }),\delta \in [0,1),\) and \(\text {O}(t^{-1})\) respectively. This type of singular behavior allows coefficients to be either oscillatory or logarithmically bounded at \(t=0\) . We use the Planck function associated with the metric to subdivide the extended phase space and define an appropriate generalized parameter dependent symbol class. We report that the solution experiences a finite loss in the Sobolev space index in relation to the initial datum defined in the Sobolev space tailored to the metric. Our analysis suggests that an infinite loss is quite expected when the order of singularity of the first time derivative of the leading coefficients exceeds \(O(t^{-1})\) . We confirm this by providing a counterexample. Further, using the \(L^1\) integrability of the logarithmic singularity in t and the global properties of the operator with respect to x, we derive an anisotropic cone condition in our setting.
      PubDate: 2021-10-27
      DOI: 10.1007/s11565-021-00378-2
       
  • Generalization of Titchmarsh theorem in the deformed Hankel setting

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00379-1
       
  • Multiplicative Lie triple derivation of triangular 3-matrix rings

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00374-6
       
  • On an operator preserving inequalities between polynomials

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00375-5
       
  • On the irreducibility of the extensions of Burau and Gassner
           representations

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00376-4
       
  • A family of derivative-free methods for solving nonlinear equations

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00377-3
       
  • Attractors for Navier–Stokes equation with fractional operator in
           the memory term

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00373-7
       
  • Stability analysis for a multi-layer Hele-Shaw displacement

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00371-9
       
  • Initial value problems of nonlinear fractional differential equations with
           two orders

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00372-8
       
  • Helicity and regularity of weak solutions to 3D Navier–Stokes
           equations

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00370-w
       
  • Rings with fine nilpotents

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00369-3
       
  • Space curves, X-ranks and cuspidal projections

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00368-4
       
  • Asymptotic modeling of the behavior of a reinforced plate governed by a
           full von Karman thermo-elastic system with nonlinear thermal coupling

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00364-8
       
  • Space-time decay rate for Navier–Stokes equations with power-law
           type nonlinear viscous fluid

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00367-5
       
  • On the decay of a nonlinear wave equation with delay

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00366-6
       
  • Approximation by modified Szász-Kantorovich type operators based on
           Brenke type polynomials

    • Free pre-print version: Loading...

      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
      DOI: 10.1007/s11565-021-00365-7
       
 
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: 54.224.117.125
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-