Results 31 to 40 of about 17,377,748 (367)

Positive Solution of Singular BVPs for System of Dynamic Equations on Time Scales [PDF]

, 2012
This paper is devoted to derive some necessary and suficient conditions for the existence of positive solutions to a singular second order system of dynamic equations with Dirichlet boundary conditions.
Lago, Ariadna, Otero-Espinar, Victoria, Pernas-Castaño, Tania   +2 more
core   +2 more sources

Existence and stability of a positive solution for nonlinear hybrid fractional differential equations with singularity

Journal of Taibah University for Science, 2019
In this paper, we will study solution existence and its stability for hybrid fractional DE with fractional integral, fractional differential derivative and Φp-operator in Caputo sense.
W. Al-Sadi, Huang Zhen-you, Abdulwasea Alkhazzan   +2 more
semanticscholar   +1 more source

Positive practices : solution-focused and narrative therapeutic techniques with children with sexually harmful behaviours [PDF]

, 2006
This article explores the use of solution-focused and Narrative Therapeutic approaches with a boy who had sexually harmful behaviours. The paper will highlight the practical challenges of working with someone who is 'problem-saturated' through ...
Berg I. K., Bird J., Burton D., De Shazer S., De Shazer S., Dolan Y., Epston D., Freeman J., Hackett S., Jenkins A., Maletzky B. M., Milner J., Milner J., Milner J., Myers S., Payne M., Print B., Scott D., Steve Myers, Turnell A., Vizard E., Wampole B. E., White M., White M., White M., Winslade J.   +25 more
core   +1 more source

Existence and uniqueness of positive solutions for a class of nonlinear fractional differential equations with mixed-type boundary value conditions

Nonlinear Analysis, 2018
In this article, we study a class of nonlinear fractional differential equations with mixed-type boundary conditions. The fractional derivatives are involved in the nonlinear term and the boundary conditions. By using the properties of the Green function,
Fang Wang, Lishan Liu, Debin Kong, Yonghong Wu   +3 more
doaj   +1 more source

The existence and nonexistence of positive solutions for a singular Kirchhoff equation with convection term

Mathematical Biosciences and Engineering, 2022
This paper considers a singular Kirchhoff equation with convection and a parameter. By defining new sub-supersolutions, we prove a new sub-supersolution theorem.
Xiaohui Qiu, Baoqiang Yan
doaj   +1 more source

Positive solution for a class of nonlinear fourth-order boundary value problem

AIMS Mathematics, 2023
In this paper, we are concerned with the existence of positive solutions for boundary value problems of nonlinear fourth-order differential equations $ \begin{eqnarray*} &&u^{(4)}+c(x)u = \lambda a(x)f(u), \; \; x\in (0,1),\\ &&u(0) =
Yanhong Zhang , Li Chen
doaj   +1 more source

The parallel approximability of a subclass of quadratic programming [PDF]

, 1997
In this paper we deal with the parallel approximability of a special class of Quadratic Programming (QP), called Smooth Positive Quadratic Programming. This subclass of QP is obtained by imposing restrictions on the coefficients of the QP instance.
Serna Iglesias, María José, Xhafa Xhafa, Fatos   +1 more
core   +1 more source

Unique positive solutions for boundary value problem of p-Laplacian fractional differential equation with a sign-changed nonlinearity

Nonlinear Analysis, 2022
This paper investigates the existence of a unique positive solution for a class of boundary value problems of p-Laplacian fractional differential equations, where its nonlinearity is signchanged and involves a fractional derivative term, and its ...
Wenxia Wang
doaj   +1 more source

Moving mesh finite difference solution of non-equilibrium radiation diffusion equations [PDF]

, 2018
A moving mesh finite difference method based on the moving mesh partial differential equation is proposed for the numerical solution of the 2T model for multi-material, non-equilibrium radiation diffusion equations. The model involves nonlinear diffusion
Huang, Weizhang, Qiu, Jianxian, Yang, Xiaobo   +2 more
core   +2 more sources

On Positive Solutions for Some Nonlinear Semipositone Elliptic Boundary Value

Nonlinear Analysis, 2006
This study concerns the existence of positive solutions to classes of boundary value problems of the form −∆u = g(x,u), x ∈ Ω, u(x) = 0, x ∈ ∂Ω, where ∆ denote the Laplacian operator, Ω is a smooth bounded domain in RN (N ≥ 2) with ∂Ω of class C2, and ...
G. A. Afrouzi, S. H. Rasouli
doaj   +1 more source