Results 11 to 20 of about 1,143 (217)

Solution of a two-dimensional parabolic model problem in a degenerate angular domain [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
In this paper, the boundary value problem of heat conduction in a domain was considered, boundary of which changes with time, as well as there is no the problem solution domain at the initial time, that is, it degenerates into a point.
M.I. Ramazanov   +2 more
doaj   +2 more sources

Time-Domain Boundary Integral Methods in Linear Thermoelasticity [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2020
This paper is concerned with the application of time domain boundary integral methods(TDBIMs) to a non-stationary boundary value problem for the thermo-elasto-dynamic equations, based on the Lubich approach via the Laplace transform. Fundamental solutions of the transformed thermo-elasto-dynamic equations are constructed explicitly by the Hörmander ...
George C. Hsiao   +1 more
openaire   +3 more sources

An IGA based domain integral method for the evaluation of the J-integral using the singular patch method

open access: yesMechanical Engineering Journal, 2022
In this paper, a domain integral method to evaluate the J-integral along with a singular patch method for three-dimensional linear elastic fracture mechanics analyses using Isogeometric analysis (IGA) are presented.
Omar TABAZA   +2 more
doaj   +1 more source

Three-dimensional crack analyses under thermal stress field by XFEM using only the Heaviside step function

open access: yesMechanical Engineering Journal, 2020
A three-dimensional crack analysis method based on XFEM using only the Heaviside step function was applied to heat transfer and subsequent thermal stress analyses of cracked structures. The proposed method employs tip elements to discretize the weak form
Toshio NAGASHIMA
doaj   +1 more source

An accelerated hybrid TLM-IE method for the investigation of shielding effectiveness [PDF]

open access: yesAdvances in Radio Science, 2010
A hybrid numerical technique combining time-domain integral equations (TD-IE) with the transmission line matrix (TLM) method is presented for the efficient modeling of transient wave phenomena.
N. Fichtner, P. Russer
doaj   +1 more source

Integration of Domain Ontologies in the Repository of Website Evaluation Methods [PDF]

open access: yesAnnals of Computer Science and Information Systems, 2015
Many methods can be used for the evaluation of website quality. While they can be used for different purposes and require different assessment approaches it is not easy to select proper method adequate to the needs. Presented research is focused on building a repository of knowledge about the methods for the assessing the quality of website.
Pawel Ziemba   +4 more
openaire   +2 more sources

An efficient approach for calculating a definite integral with about a dozen of sampling points [PDF]

open access: yesVojnotehnički Glasnik, 2022
Introduction/purpose: An approximate approach to definite integral calculation has been an attractive problem continuously since the creation of integration due to practical needs in scientific and engineering areas.
Jie Yu   +3 more
doaj   +1 more source

A new three-dimensional J-integral formulation for arbitrary load history and finite deformation

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In this paper, a new formulation of three-dimensional J-integral for the evaluation of elastic-plastic fracture problem is presented. It is known that the J-integral represents the energy release rate per unit crack extension.
Koichiro ARAI   +2 more
doaj   +1 more source

The Time-Domain Integration Method of Digital Subtraction Angiography Images [PDF]

open access: yesComputational and Mathematical Methods in Medicine, 2018
The clarity improvement and the noise suppression of digital subtraction angiography (DSA) images are very important. However, the common methods are very complicated. An image time-domain integration method is proposed in this study, which is based on the blood flow periodicity. In this method, the images of the first cardiac cycle after the injection
Shuo Huang   +6 more
openaire   +3 more sources

Singular integrals in product domains and the method of rotations [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
Singular integrals with kernels of the form K ( x , y )
openaire   +1 more source

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