Results 21 to 30 of about 14,211,873 (126)

New Variational Principles for Two Kinds of Nonlinear Partial Differential Equation in Shallow Water [PDF]

open access: yesJournal of Applied and Computational Mechanics
Variational principles are very important for a lot of nonlinear problems to be analyzed theoretically or solved numerically. By the popular semi-inverse method and designing trial-Lagrange functionals skillfully, new variational principles are ...
Xiao-Qun Cao   +4 more
doaj   +1 more source

Evaluating an extended rehabilitation service for stroke patients (EXTRAS): Study protocol for a randomised controlled trial [PDF]

open access: yes, 2015
Background: Development of longer term stroke rehabilitation services is limited by lack of evidence of effectiveness for specific interventions and service models.
McMeekin, P   +38 more
core   +2 more sources

Residual-QSAR. Implications for genotoxic carcinogenesis

open access: yesChemistry Central Journal, 2011
Introduction Both main types of carcinogenesis, genotoxic and epigenetic, were examined in the context of non-congenericity and similarity, respectively, for the structure of ligand molecules, emphasizing the role of quantitative structure-activity ...
Putz Mihai V
doaj   +1 more source

A second order convergent trial method for a free boundary problem in three dimensions [PDF]

open access: yes, 2015
The present article is concerned with the solution of a generalized Bernoulli free boundary problem in three spatial dimensions. We parametrize the free boundary under consideration over the sphere and apply a trial method which updates the free boundary
Harbrecht, Helmut, Bugeanu, Monica
core   +1 more source

Observations on the tanh-coth expansion method for finding solutions to nonlinear evolution equations [PDF]

open access: yes, 2010
The 'tanh-coth expansion method' for finding solitary travelling-wave solutions to nonlinear evolution equations has been used extensively in the literature. It is a natural extension to the basic tanh-function expansion method which was developed in the
Parkes, E.J.
core   +4 more sources

Free vibration analysis of symmetrically laminated composite rectangular plates using extended Kantorovich method [PDF]

open access: yesMaejo International Journal of Science and Technology, 2010
Free vibration of symmetrically laminated composite rectangular plates with various boundary conditions is analysed by an extended Kantorovich method, in which a separable function to the dynamic-system energy equation is applied in order to reduce the ...
Kullasup Phongsrisuk
doaj  

Analytic investigation of the (2+1)-dimensional Heisenberg ferromagnetic spin chain equation with M-fractional derivative

open access: yesPartial Differential Equations in Applied Mathematics
In this study, we examine the Heisenberg ferromagnetic spin chain equation in complex form in (2+1) dimensions, which is closely related to ferromagnetic materials and is used in spin wave dynamics modeling.
Zehra Tat, Emrullah Yaşar
doaj   +1 more source

New exact solutions for generalized Gardner equation

open access: yesKuwait Journal of Science, 2017
In this research, we seek exact solutions of generalized Gardner equation. We make use of extended trial equationmethod to attain exact solutions of generalized Gardner equation. Firstly, we find some exact solutions such as soliton solutions, rational,
Seyma T. Demiray, Hasan Bulut
doaj  

Exact Periodic Wave Solutions for the Perturbed Boussinesq Equation with Power Law Nonlinearity

open access: yesMathematics
In this paper, exact periodic wave solutions for the perturbed Boussinesq equation with power law nonlinearity are obtained for different nonlinear strengths n.
Ying Kong, Jia Geng
doaj   +1 more source

Can we identify non-stationary dynamics of trial-to-trial variability?" [PDF]

open access: yes, 2014
Identifying sources of the apparent variability in non-stationary scenarios is a fundamental problem in many biological data analysis settings. For instance, neurophysiological responses to the same task often vary from each repetition of the same ...
Alejandro Tabas-Diaz   +11 more
core   +1 more source

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