A standard method for visualizing vector elds consists of drawing many small \glyphs" to represent the eld. This paper extends the technique from regular to curvilinear and unstructured grids. In order to achieve a uniform density of vector glyphs on nonuniformly spaced grids, the paper describes two approaches to resampling the grid data. One of the methods, an element-based resampling, can be...

A bounded aspect-ratio coarsening sequence of an unstructured mesh M 0 is a sequence of meshes M 1 ; : : : ; M k such that: M i is a bounded aspect-ratio mesh, and M i is an approximation of M i?1 that has fewer elements, where a mesh is called a bounded aspect-ratio mesh if all its elements are of bounded aspect-ratio. The sequence is node-nested if the set of the nodes of M i is a subset of t...

The development of high-order computational methods for solving partial differential equations on unstructured grids has been underway for many years. Such methods critically depend on the availability of high-quality curvilinear meshes, as one badly-shaped element can degrade the solution in the whole domain [2]. The usual way of generating curved meshes is to first generate a straight sided m...

Management of unstructured data is viewed as one of the major unsolved problems. Nearly eighty percentage of enterprise data resided in unstructured formats such as text files, email, customer profile information, external information, video documents and audio samples in various fields including search, prediction, business intelligence, financial service industry – FSI and in sematic web, whi...

Information integration from multiple heterogeneous sources is one of the major challenges facing enterprises and service providers today, and one of the important problems in this domain is the integration of structured and unstructured (or text) data. In this paper we describe our work on a data-driven approach to integrating various sources of text data, without relying on the availability o...

In the multidimensional numerical simulation of physical processes many phenomena are suuciently localized and it is obvious that adap-tive local grid reenement techniques are necessary to resolve the local physical behavior. For this reason the nite element discretiza-tions are often considered on the non-hierarchical unstructured meshes which permit to reduce the number of degrees of freedom ...

The Tera Multithrcadcd Architecture (MTA) is a new parallel supcrcomputer currently being installed at San Diego Supercomputing Center (SDSC). This machine has an architecture quite different from contemporary parallel machines. The computational processor is a custom design and the machine uses hardware to support very fine grained multithreading. The main memory is shared, hardware randomized...