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Computing in Science & Engineering

Issue 3 • Date May-Jun 2004

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Displaying Results 1 - 20 of 20
  • String, ring, sphere: visualizing wavefunctions on different topologies

    Publication Year: 2004, Page(s):82 - 86
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1093 KB) | HTML iconHTML

    A quantum system's state is described by a complex wave function, which can be supported on different topologies - for example, one-dimensional open space, a closed one-dimensional ring, or a two-dimensional surface of a sphere. Interactive tools represent the quantum state of a single particle constrained to different topologies, while stressing the underlying superposition principle, which is in... View full abstract»

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  • The Penna model for biological aging and speciation

    Publication Year: 2004, Page(s):74 - 81
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (309 KB) | HTML iconHTML

    Results obtained by the application of the Penna model to problems of evolutionary theory are reviewed. The genesis of diploid organisms is studied and compared to other forms of polyploidity. The addition of phenotype-dependent selection and its consequences, considering ecological and/or sexual selection traits, are discussed. This addition made possible the analysis of the mechanism through whi... View full abstract»

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  • More models of infection: it's epidemic

    Publication Year: 2004, Page(s):70 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (250 KB) | HTML iconHTML

    First Page of the Article
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  • Fitting exponentials: an interest in rates

    Publication Year: 2004, Page(s):66 - 69
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (330 KB) | HTML iconHTML

    We study efficient algorithms for solving problems with exponentials. In this paper, we investigate the problem of fitting a sum of exponential functions to data. This problem occurs in many real-world situations, but we'll see that for many data sets, the solution is not well determined. View full abstract»

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  • Visualization equivalence for multisensory perception: learning from the visual

    Publication Year: 2004, Page(s):61 - 65
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (359 KB) | HTML iconHTML

    In our information-rich world, computers generate so much data that it comprehending and understanding it in its raw form is difficult. Visual representations are imperative if we are to understand even a small part of it. In addition - or as an alternative to visual mappings - we could map information into nonvisual forms, any form that stimulates any of our senses: from auditory, haptic, olfacto... View full abstract»

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  • Some applications of Grobner bases

    Publication Year: 2004, Page(s):56 - 60
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1098 KB) | HTML iconHTML

    Previously (see ibid., vol.6, no.2, 2004), we discussed the geometry of linear and algebraic systems. We also defined ideals and bases so that we could introduce the concept of Grobner bases for algebraic system solving. In this article, we give more details about Grobner bases and describe their main application (algebraic system solving) along with some surprising derived ones: inclusion of vari... View full abstract»

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  • Two- and three-dimensional asteroid impact simulations

    Publication Year: 2004, Page(s):46 - 55
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1488 KB) | HTML iconHTML

    Performing a series of simulations of asteroid impacts using the SAGE code, the authors attempt to estimate the effect of tsunamis and other important environmental events. The code they developed treats multiple fluids with different equations of state and different constitutive models for material strength. The adaptive mesh can refine based on a number of criteria including gradients in physica... View full abstract»

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  • Virtual watersheds: simulating the water balance of the Rio Grande Basin

    Publication Year: 2004, Page(s):18 - 26
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1538 KB) | HTML iconHTML

    Managers of water resources in arid and semi-arid regions must allocate increasingly variable surface water supplies and limited groundwater resources. This challenge is leading to a new generation of detailed computational models that can link multiple sources to a wide range of demands. Detailed computational models of complex natural-human systems can help decision makers allocate scarce natura... View full abstract»

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  • Simulation of swimming organisms: coupling internal mechanics with external fluid dynamics

    Publication Year: 2004, Page(s):38 - 45
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1485 KB) | HTML iconHTML

    Problems in biological fluid dynamics typically involve the interaction of an elastic structure with its surrounding fluid. A unified computational approach, based on an immersed boundary framework, couples the internal force-generating mechanisms of organisms and cells with an external, viscous, incompressible fluid. Computational simulation, in conjunction with laboratory experiment, can provide... View full abstract»

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  • IEEE Computer Society Information

    Publication Year: 2004, Page(s): 97
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  • Computational science and pathological science

    Publication Year: 2004, Page(s):2 - 3
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  • Stella: growing upward, downward, and outward [software review]

    Publication Year: 2004, Page(s):8 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1268 KB) | HTML iconHTML

    The author reviews Stella's modeling capabilities for both research and instruction. He describes the basic modeling tools using his student's quest as a simple, illustrative case study, exploring how these tools contribute to speed and efficiency in creating models for concept testing. He also examines some of Stella's broader research capabilities in the context of how they support and connect w... View full abstract»

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  • Frontiers of simulation, part II

    Publication Year: 2004, Page(s):16 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (675 KB) | HTML iconHTML

    First Page of the Article
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  • Data sharing in scientific simulations

    Publication Year: 2004, Page(s):87 - 96
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (375 KB) | HTML iconHTML

    Several physics processes modify the state of a scientific simulation over time. In fact, researchers often divide a simulation's development into areas - called packages - according to physics specialization. In this article, we use the word "package" primarily to mean a portion of scientific software whose components communicate internally much more than they do with outside routines, but packag... View full abstract»

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  • Large-scale fluid-structure interaction simulations

    Publication Year: 2004, Page(s):27 - 37
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2943 KB) | HTML iconHTML

    Combining computational-science disciplines, such as in fluid-structure interaction simulations, introduces a number of problems. The authors offer a convenient and cost-effective approach for coupling computational fluid dynamics (CFD) and computational structural dynamics (CSD) codes without rewriting them. With the advancement of numerical techniques and the advent, first, of affordable 3D grap... View full abstract»

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  • Simulated bite marks [digital simulation]

    Publication Year: 2004, Page(s):4 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (713 KB) | HTML iconHTML

    Though real Sabertooth cats are long extinct, anatomist Frank Mendel and his team plan to build a scale model of the head and jaws of a 700-pound Smilodon fatalis to reproduce the predator's deadly bite. They want to measure the forces necessary for the teeth to penetrate the skin, muscle, and other tissues of a recently dead herbivore, and use the data in a new computer-aided design (CAD) program... View full abstract»

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  • New cloud animation software on the horizon

    Publication Year: 2004, Page(s):6 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (485 KB) | HTML iconHTML

    Swell and Prime - two new programs that render animated, three-dimensional (3D) clouds - are the Purdue University Rendering and Perceptualization Lab's latest innovations. At the lab, directed by David Ebert, researchers are developing software that brings scientific and medical data sets to life as 3D models, computer-generated illustrations, and photorealistic images. Crude as they might appear... View full abstract»

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  • IEEE Computing in Science & Engineering

    Publication Year: 2004, Page(s): 0_1
    Request permission for commercial reuse | PDF file iconPDF (627 KB)
    Freely Available from IEEE
  • Computing in Science & Engineering - Table of contents

    Publication Year: 2004, Page(s):0_2 - 0_4
    Request permission for commercial reuse | PDF file iconPDF (649 KB)
    Freely Available from IEEE
  • 2004 Editorial calendar

    Publication Year: 2004, Page(s): 73
    Request permission for commercial reuse | PDF file iconPDF (662 KB)
    Freely Available from IEEE

Aims & Scope

CS&E magazine emphasizes articles that help define the field as the interface among the applications (in science and engineering), algorithms (numerical and symbolic), system software, and computer architecture.

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Meet Our Editors

Editor-in-Chief
George K. Thiruvathukal
Loyola University