نتایج جستجو برای: implicit solution

تعداد نتایج: 505038  

تقی پور آذر, یاور, جانبازی, مهدی, ضیائی, فرهود,

In this study, based on Density Functional Theory (DFT), the effect of solution on the g-tensor, hyperfine coupling constant of atoms and finally the EPR spectrum of alanine free radicals induced by ionizing radiation such as electron and gamma was investigated using implicit models such as COSMO, and explicit models such as introducing hydrogen bonds to the cluster structures. The obtained res...

2007
ANITA T. LAYTON MICHAEL L. MINION

High-order semi-implicit Picard integral deferred correction (SIPIDC) methods have previously been proposed for the time-integration of partial differential equations with two or more disparate time scales. The SIPIDC methods studied to date compute a high-order approximation by first computing a provisional solution with a first-order semi-implicit method and then using a similar semiimplicit ...

2005
Anita T. Layton Michael L. Minion

Previously, high-order semi-implicit Picard integral deferred correction (SIPIDC) methods have been proposed for the time-integration of partial differential equations with two or more disparate time scales. The SIPIDC methods studied to date compute a high-order approximation by first computing a provisional solution with a first-order semi-implicit method and then using a similar semi-implici...

H. Z. Aashtiani and B. Hejazi,

Bus network design is an important problem in public transportation. A main step to this design is determining the number of required terminals and their locations. This is a special type of facility location problem, which is a time-consuming, large scale, combinatorial problem. In a previous attempt by the authors, this problem had been solved by GAMS, based on a branch and bound algorithm.&...

2007
Francisco Facchinei FRANCISCO FACCHINEI CHRISTIAN KANZOW

1993] proposed to solve nonlinear complementarity problems by seeking the unconstrained global minima of a new merit function which they called implicit Lagrangian. A crucial point in such an approach is to determine conditions which guarantee that every uncon-strained stationary point of the implicit Lagrangian is a global solution, since standard unconstrained minimization techniques are only...

Journal: :Math. Program. 2013
Xiaojun Chen Shuhuang Xiang

We propose a generalized Newton method for solving the system of nonlinear equations with linear complementarity constraints in the implicit or semi-implicit time-stepping scheme for differential linear complementarity systems (DLCS). We choose a specific solution from the solution set of the linear complementarity constraints to define a locally Lipschitz continuous right-hand-side function in...

Journal: :Appl. Math. Lett. 2006
Jun Li Nan-Jing Huang

In this paper, we introduce a new class of general mixed vector F -implicit complementarity problems and general mixed vector F -implicit variational inequality problems, and study the equivalence between of them under certain assumptions in Banach spaces. We also derive some new existence theorems of solutions for the general mixed vector F -implicit complementarity problems and the general mi...

Journal: :SIAM J. Scientific Computing 2015
Jizu Huang Chao Yang Xiao-Chuan Cai

Existing approaches for solving the lattice Boltzmann equations with finite difference methods are explicit and semi-implicit; both have certain stability constraints on the time step size. In this work, a fully implicit second-order finite difference scheme is developed. We focus on a parallel, highly scalable, Newton–Krylov–RAS algorithm for the solution of a large sparse nonlinear system of ...

1998
David S. Ebert Edward Bedwell

Implicit modeling eases the design and animation of complex objects; however, it does not solve the problem completely for extremely complex surface design problems and for modeling volumetric phenomena. Procedural techniques are another growing solution to this problem because of their exibility, parametric control, and abstraction of speciication. This paper discusses how to combine existing ...

Journal: :journal of linear and topological algebra (jlta) 0
j rashidinia department of mathematics,college of basic science, islamic azad university, alborz, iran. h. s. shekarabi department of mathematics,college of basic science, islamic azad university, alborz, iran. m aghamohamadi department of mathematics,college of basic science, islamic azad university, alborz, iran.

we have developed a three level implicit method for solution of the helmholtz equation. using the cubic spline in space and nite di erence in time directions. the approach has been modi ed to drive numerov type nite di erence method. the method yield the tri- diagonal linear system of algebraic equations which can be solved by using a tri-diagonal solver. stability and error estimation of the...

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