Results 121 to 130 of about 11,399,904 (367)
Structural Concrete, EarlyView.Abstract This study examines the time‐dependent behavior of reinforced and prestressed concrete structures using integral‐ and rate‐type formulations, applying the concrete creep and steel relaxation models from the fib Model Code 2020. The stress–strain law for aging concrete is expressed by a second‐order differential equation, but a single rate‐type
Mauro Schulz
wiley +1 more source
Infinitely many solutions to the Dirichlet problem for quasilinear elliptic systems
Le Matematiche, 2005 In this paper we deal with the existence of weak solutions for some Dirichlet problem.The existence of solutions is proved by applying a critical point variational principle obtained by B. Ricceri as consequence of a more general variational principle.
Antonio Giuseppe Di Falco
doaj
Reactor Design for Chemical Reaction‐Diffusion Systems
ChemSystemsChem, EarlyView.This review discusses methods for the design of reactors for studying reaction‐diffusion (RD) phenomena. Abstract The experimental study of reaction–diffusion‐driven chemical and biological systems is a key to understanding pattern formation in nature. Starting from experiments performed in a Petri dish or test tube, various reactors have been designed
Brigitta Dúzs +2 more
wiley +1 more source
On the Dirichlet Problem for the Hyperbolic Case [PDF]
Proceedings of the National Academy of Sciences, 1942 Not ...
openaire +3 more sources
On Some Approximation Methods for Solutions of the Dirichlet Problem for Linear Elliptic Equations of Arbitrary Order [PDF]
, 1958 Felix E. Browder
openalex +1 more source
Journal of Research in Science Teaching, EarlyView.ABSTRACT There have been several attempts to conceptualize and operationalize pedagogical content knowledge (PCK) in the context of teachers' professional competencies. A recent and popular model is the Refined Consensus Model (RCM), which proposes a framework of dispositional competencies (personal PCK—pPCK) that influence more action‐related ...
Jannis Zeller, Josef Riese
wiley +1 more source
Antiplane deformation of a cylindrically anisotropic elastic rod
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012 The problem of antiplane deformation of general cylindrical anisotropic material is studied in this paper. Explicit solutions of Dirichlet and Neumann problems are given for a circular domain.
Yurii A Bogan
doaj
Dirichlet problem for second-order abstract differential equations
Electronic Journal of Differential Equations, 2020 We study the well-posedness in the space of continuous functions of the Dirichlet boundary value problem for a homogeneous linear second-order differential equation u''+Au = 0, where A is a linear closed densely defined operator in a Banach space. We
Giovanni Dore
doaj
ON A BOUNDARY-VALUE PROBLEM FOR THE POISSON EQUATION AND THE CAUCHY–RIEMANN EQUATION IN A LENS
Проблемы анализаIn this paper, we consider the Dirichlet boundary-value problem for complex partial differential equations in a lens. With the help of the harmonic Green function, the Dirichlet boundary-value problem is solved explicitly for the Poisson equation in a ...
A. Darya, N. Taghizadeh
doaj +1 more source
On construction of converging sequences to solutions of boundary value problems
Mathematical Modelling and Analysis, 2010 We consider the Dirichlet problem x″ = f(t,x), x(a) = A, x(b) = B under the assumption that there exist the upper and lower functions. We distinguish between two types of solutions, the first one, which can be approximated by monotone sequences of ...
Maria Dobkevich
doaj +1 more source