An O(1) time algorithm to multiply two N-bit binary numbers using an N ¥ N bit-model of reconfigurable mesh is shown. It uses optimal mesh size and it improves previously known results for multiplication on the reconfigurable mesh. The result is obtained by using novel techniques for data representation and data movement and using multidimensional Rader Transform. The algorithm is extended to r...

We present an algorithm for detecting and extracting the silhouette edges of a triangle mesh in real time using GPUs (Graphical Processing Units). We also propose a tessellation strategy for visualizing the mesh with smooth silhouettes through a continuous blend between Bézier patches with varying level of detail. Furthermore, we show how our techniques can be integrated with displacement and n...

This paper describes an effective anisotropic mesh adaptation procedure for general 3D geometries using mesh modification operations. The procedure consists of four interacted high level components: refinement, coarsening, projecting boundary vertices and shape correction. All components are governed by an anisotropic mesh metric field that represents the desired element size and shape distribu...

The network structure of poly(vinyl alcohol) (PVA) hydrogels obtained by freezing-thawing cycles was investigated by solid-state (1)H low-field NMR spectroscopy. By the application of multiple-quantum NMR experiments, we obtain information about the segmental order parameter, which is directly related to the restrictions on chain motion (cross-links) formed upon gelation. These measurements ind...

An adaptive mesh refinement method for solving optimal control problems is developed. The method employs orthogonal collocation at Legendre-Gauss-Radau points, and adjusts both the mesh size and the degree of the approximating polynomials in the refinement process. A previously derived convergence rate is used to guide the refinement process. The method brackets discontinuities and improves sol...

This paper presents the current strategy used in IP-OORT, an ongoing project to extend the application domain of a C++ toolkit library for iterative mesh adaptation. OORT is a class library for sequential structured, unstructured and hybrid mesh adaptation used mainly in the context of CFD computations, that performs iterative mesh refinement , coarsening and smoothing in 3D. Extensions to para...

Hernioplasty is mainstay in treatment of abdominal wall hernias including incisional hernias. But in the developing countries like India everyone can not afford the commercial mesh used for this procedure. So, in this study we used sterilised nylon mosquito net mesh in our patients, efficacy of which has been proved already in the repair of both inguinal and incisional hernias. In this study co...

We present results from molecular-dynamics simulations of a generic bead-spring model of copolymer chains confined between solid walls and report on the glass-transition temperature and segmental dynamics as a function of film thickness and mesh size (the end-to-end distance of the subchains in the crosslinked polymer networks). Apparently, the glass-transition temperature displayed a steep inc...

Torus/mesh-based machines have received increasing attention. It is natural to identify the maximum healthy submeshes in a faulty torus/mesh so as to lower potential performance degradation, because the time for executing a parallel algorithm tends to depend on the size of the assigned submesh. This paper proposes an efficient approach for identifying all the maximum healthy submeshes present i...