Tahir, M. H.; Cordeiro, Gauss M.; Alzaatreh, Ayman; Mansoor, M.; Zubair, M.(Communications in Statistics: Simulation and Computation, 2016-11-25)
Many distributions have been used as lifetime models. In this article, we propose a new three-parameter Weibull–Pareto distribution, which can produce the most important hazard rate shapes, namely, constant, increasing, ...
Mach, Thomas; Reichel, Lothar; Van Barel, Marc; Vandebril, R.(Journal of Computational and Applied Mathematics, 2016-09-01)
Integral equations of the first kind with a smooth kernel and perturbed right-hand side, which represents available contaminated data, arise in many applications. Discretization gives rise to linear systems of equations ...
Wei, Dongming; Zhang, Zhenbu(Electronic journal of differential equations, 2001)
In this work, we compare a parabolic equation with an elliptic
equation both of which are used in modeling temperature profile of a powerlaw
polymer
ow in a semi-infinite straight pipe with circular cross section.
We ...
Lefton, Lew; Wei, Dongming(Electronic journal of differential equations, 2001)
We study approximations of the steady state Stokes problem governed
by the power-law model for viscous incompressible non-Newtonian flow
using the penalty formulation. We establish convergence and find error estimates.
Elgindi, Mohamed B. M.; Wei, Dongming; Elgindi, T.M.(arXiv.org, 2014)
In this paper we formulate the equilibrium equation for a beam made of graphene sub-
jected to some boundary conditions and acted upon by axial compression and nonlinear lateral
constrains as a fourth-order nonlinear ...
Hazim, Hamad; Wei, Dongming; Elgindi, Mohamed B. M.; Soukiassian, Yeran(World Journal of Engineering and Technology, 2015)
A lumped-parameter nonlinear spring-mass model which takes into account the third-order elastic
stiffness constant is considered for modeling the free and forced axial vibrations of a graphene
sheet with one fixed end ...
The nonlinear Brinkman-Forchheimer-extended Darcy equation is used to model some
porous medium
ow in chemical reactors of packed bed type. The results concerning the
existence and uniqueness of a weak solution are ...
In this paper the geometric dimensions of a compressive helical spring
made of power law materials are optimized to reduce the amount of material. The
mechanical constraints are derived to form the geometric programming ...
Elgindi, Mohamed B. M.; Wei, Dongming(Mathematics Faculty Publications, 2012)
In this paper we prove the global solvability of a class of fourth-order
nonlinear boundary value problems that govern the deformation of a Hollomon’s
power-law plastic beam subject to an axial compression and nonlinear ...
Elgindi, Mohamed B. M.; Wei, Dongming(Applied Mathematical Sciences, 2013)
This paper is concerned with the existence of equilibrium states of a thin-walled hollow
elasto-plastic cylinders fully or partially submerged in a fluid. This problem serves as a
model for many problems with engineering ...
Elgindi, Mohamed B. M.; Wei, Dongming; Soukiassian, Yeran; Liu, Yu(World Journal of Engineering and Technology, 2014)
In this paper, we consider the buckling of an Euler-Bernoulli graphene beam due to an axial compressive
load. We formulate the problem as a non-linear (eigenvalue) two-point boundary value
problem, prove some properties ...
Wei, Dongming; Elgindi, Mohamed B. M.(American Journal of Computational Mathematics, 2013)
In this work, we present a priori error estimates of finite element approximations of the solution for the equilibrium equation of an axially loaded Ramberg-Osgood bar. The existence and uniqueness of the solution to the ...
Lefton, Lew; Wei, Dongming(Journal of Numerical Mathematics, 2003)
Finite element approximations of the stationary power-law Stokes problem using penalty
formulation are considered. A priori error estimates under appropriate smoothness assumptions on the
solutions are established without ...
In this paper, it is shown that D. Shelupsky's generalized sine func-
tion, and various general sine functions developed by P. Drabek, R.
Manasevich and M. Otani, P. Lindqvist, including the generalized Ja-
cobi elliptic ...
Wei, Dongming(Society for Industrial and Applied Mathematics. SIAM Journal on Numerical Analysis, 1992-04)
A quasilinear parabolic problem is studied. By using the method of lines, the existence and uniqueness of a solution to the initial boundary value problem with sufficiently smooth initial conditions are shown. Also given ...
Let V be a variety of algebras. We establish a condition (so called
generalized entropic property), equivalent to the fact that for every algebra
A 2 V, the set of all subalgebras of A is a subuniverse of the complex ...
For a class C of finite lattices, the question arises whether any
lattice in C can be embedded into some atomistic, biatomic lattice in C. We
provide answers to the question above for C being, respectively,
— The class ...
We give two sufficient conditions for the lattice Co(Rn,X) of rel-
atively convex sets of Rn to be join-semidistributive, where X is a finite union
of segments. We also prove that every finite lower bounded lattice can ...
A convex geometry is a closure space satisfying the anti-exchange axiom. For several
types of algebraic convex geometries we describe when the collection of closed sets is order scattered, in terms of obstructions to the ...
Discovery of (strong) association rules, or implications, is an important
task in data management, and it nds application in arti cial intelligence,
data mining and the semantic web. We introduce a novel approach
for ...