Results 11 to 20 of about 66,203 (111)

Deep geological processes and deep resources in basins: scientific issues and research directions

open access: yesShiyou shiyan dizhi, 2020
Marching deeper into the earth is of great significance for domestic resource strategy and tends to be an inevitable research direction in geoscience. With theoretical and technological progress achieved in recent years, hydrocarbon resources in deep or ...
Zhiliang HE   +4 more
doaj   +1 more source

A robust and low frequency stable time domain PMCHWT equation [PDF]

open access: yes, 2015
The time domain PMCHWT equation models transient scattering by piecewise homogeneous dielectrics. After discretization, it can be solved using the marching-on-in-time algorithm.
Andriulli, Francesco P   +2 more
core   +3 more sources

Hypersonic aerodynamics on thin bodies with interaction and upstream influence [PDF]

open access: yes, 1994
In the fundamental configuration studied here, a steady hypersonic free stream flows over a thin sharp aligned airfoil or flat plate with a leading-edge shock wave, and the flow field in the shock layer (containing a viscous and an inviscid layer) is ...
Khorrami, AF, Smith, FT
core   +1 more source

Fine-grained visualization pipelines and lazy functional languages [PDF]

open access: yes, 2006
The pipeline model in visualization has evolved from a conceptual model of data processing into a widely used architecture for implementing visualization systems.
Colin, Runciman   +3 more
core   +3 more sources

Minimum length-scale constraints for parameterized implicit function based topology optimization [PDF]

open access: yes, 2018
Open access via Springer Compact Agreement The author would like to thank the Numerical Analysis Group at the Rutherford Appleton Laboratory for their FORTRAN HSL packages (HSL, a collection of Fortran codes for large-scale scientific computation.
Dunning, Peter D
core   +2 more sources

A Phase Field Model for Continuous Clustering on Vector Fields [PDF]

open access: yes, 2001
A new method for the simplification of flow fields is presented. It is based on continuous clustering. A well-known physical clustering model, the Cahn Hilliard model, which describes phase separation, is modified to reflect the properties of the data to
Garcke, Harald,   +5 more
core   +2 more sources

Robust semi-automated path extraction for visualising stenosis of the coronary arteries [PDF]

open access: yes, 2008
Computed tomography angiography (CTA) is useful for diagnosing and planning treatment of heart disease. However, contrast agent in surrounding structures (such as the aorta and left ventricle) makes 3-D visualisation of the coronary arteries difficult ...
Achenbach   +43 more
core   +2 more sources

Moving-boundary problems solved by adaptive radial basis functions [PDF]

open access: yes, 2010
The objective of this paper is to present an alternative approach to the conventional level set methods for solving two-dimensional moving-boundary problems known as the passive transport. Moving boundaries are associated with time-dependent problems and
Atluri   +42 more
core   +2 more sources

A transient boundary element method model of Schroeder diffuser scattering using well mouth impedance [PDF]

open access: yes, 2008
Room acoustic diffusers can be used to treat critical listening environments to improve sound quality. One popular class is Schroeder diffusers, which comprise wells of varying depth separated by thin fins.
Cox, TJ, Hargreaves, JA
core   +1 more source

Space-time domain solutions of the wave equation by a non-singular boundary integral method and Fourier transform

open access: yes, 2017
The general space-time evolution of the scattering of an incident acoustic plane wave pulse by an arbitrary configuration of targets is treated by employing a recently developed non-singular boundary integral method to solve the Helmholtz equation in the
Chan, Derek Y. C.   +2 more
core   +1 more source

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