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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Parallel Three-Dimensional Acoustic And Elastic Wave Simulation Methods With Applications In Nondestructive Evaluation, Kevin Edward Rudd
Parallel Three-Dimensional Acoustic And Elastic Wave Simulation Methods With Applications In Nondestructive Evaluation, Kevin Edward Rudd
Dissertations, Theses, and Masters Projects
In this dissertation, we present two parallelized 3D simulation techniques for three-dimensional acoustic and elastic wave propagation based on the finite integration technique. We demonstrate their usefulness in solving real-world problems with examples in the three very different areas of nondestructive evaluation, medical imaging, and security screening. More precisely, these include concealed weapons detection, periodontal ultrasography, and guided wave inspection of complex piping systems. We have employed these simulation methods to study complex wave phenomena and to develop and test a variety of signal processing and hardware configurations. Simulation results are compared to experimental measurements to confirm the accuracy of …
Forward Secure Fuzzy Extractors, David Goldenberg
Forward Secure Fuzzy Extractors, David Goldenberg
Dissertations, Theses, and Masters Projects
No abstract provided.
A New Packet Filter: Fast Packet Filtering By Exploiting Cisc And Simd Isa, Zhenyu Wu
A New Packet Filter: Fast Packet Filtering By Exploiting Cisc And Simd Isa, Zhenyu Wu
Dissertations, Theses, and Masters Projects
No abstract provided.
Tweakable Blockciphers Secure Against Generic Exponential Attacks, Elizabeth Ann Crump
Tweakable Blockciphers Secure Against Generic Exponential Attacks, Elizabeth Ann Crump
Dissertations, Theses, and Masters Projects
No abstract provided.
Decoupling Method For Parallel Delaunay Two-Dimensional Mesh Generation, Leonidas Linardakis
Decoupling Method For Parallel Delaunay Two-Dimensional Mesh Generation, Leonidas Linardakis
Dissertations, Theses, and Masters Projects
Parallel mesh generation procedures that are based on geometric domain decompositions require the permanent separators to be of good quality (in terms of their angles and length), in order to maintain the mesh quality. The Medial Axis Domain Decomposition, an innovative geometric domain decomposition procedure that addresses this problem, is introduced. The Medial Axis domain decomposition is of high quality in terms of the formed angles, and provides separators of small size, and also good work-load balance. It presents for the first time a decomposition method suitable for parallel meshing procedures that are based on geometric domain decompositions.;The Decoupling Method …
Parallel Generalized Delaunay Mesh Refinement, Andrey Nikolayevich Chernikov
Parallel Generalized Delaunay Mesh Refinement, Andrey Nikolayevich Chernikov
Dissertations, Theses, and Masters Projects
The modeling of physical phenomena in computational fracture mechanics, computational fluid dynamics and other fields is based on solving systems of partial differential equations (PDEs). When PDEs are defined over geometrically complex domains, they often do not admit closed form solutions. In such cases, they are solved approximately using discretizations of domains into simple elements like triangles and quadrilaterals in two dimensions (2D), and tetrahedra and hexahedra in three dimensions (3D). These discretizations are called finite element meshes. Many applications, for example, real-time computer assisted surgery, or crack propagation from fracture mechanics, impose time and/or mesh size constraints that cannot …