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Computing in Science & Engineering

Issue 5 • Sept.-Oct. 2004

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Displaying Results 1 - 16 of 16
  • [Front cover]

    Publication Year: 2004, Page(s): c1
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    Freely Available from IEEE
  • Table of contents

    Publication Year: 2004, Page(s):1 - 2
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    Freely Available from IEEE
  • From the Editors: The Future Ain't What It Used to Be

    Publication Year: 2004, Page(s): 3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB) | HTML iconHTML

    A fanciful way to describe the difference between magic and science is by way of humankind’s relationship with the gods. Magic, in this view, is an attempt to force the gods to do what we humans want, but science is an attempt to determine what the gods will do next. Put another way, magic pays little attention to discovering causes of various outcomes, because practitioners of magic believe ... View full abstract»

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  • Intelligent agents peer skyward

    Publication Year: 2004, Page(s):4 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    Intelligent agents will one day be employed by astronomers all over the world. They will communicate with robotic telescopes on a worldwide network, ready to request (and, if necessary, bargain for) observation time at the first sign of a rapidly unfolding event. The project to develop the network, known as eSTAR (escience telescopes for astronomical research), is a collaboration between the Astro... View full abstract»

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  • Guest Editors' Introduction: Verification and Validation in Computational Science and Engineering

    Publication Year: 2004, Page(s):8 - 9
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB) | HTML iconHTML

    An encompassing goal of contemporary scientific computing is to provide quantitatively accurate predictions that can help society make important decisions. The span of this intended influence includes such widely different fields as astrophysics, weather and climate forecasting, quantitative economic policy, environmental regulation, and performance certification of complex engineered systems such... View full abstract»

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  • Validating astrophysical simulation codes

    Publication Year: 2004, Page(s):10 - 20
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB) | HTML iconHTML

    Astrophysical simulations model phenomena that can't be fully reproduced terrestrially. Validation then requires carefully devising feasible experiments with the relevant physics. The authors describe validating simulations against experiments that probe fluid instabilities, nuclear burning, and radiation transport, and then discuss insights from - and the limitations of - these tests. View full abstract»

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  • Beyond the means: validating climate models with higher-order statistics

    Publication Year: 2004, Page(s):22 - 29
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB) | HTML iconHTML

    Large-scale climate models are validated by comparing those models' means and variabilities to actual observation. New applications place more demands on such models, which we can address by examining the models' distributions of daily quantities such as temperature and precipitation. View full abstract»

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  • Building PDE codes to be verifiable and validatable

    Publication Year: 2004, Page(s):30 - 38
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    For codes that solve nonlinear partial differential equations (PDEs), powerful methodologies already exist for verification of codes, verification of calculations, and validation (V2V). If computational scientists and engineers are serious about these issues, they will take the responsibility and the relatively little extra effort to design (or modify) their codes so that independent users can con... View full abstract»

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  • An experimenter's perspective on validating codes and models with experiments having shock-accelerated fluid interfaces

    Publication Year: 2004, Page(s):40 - 49
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB) | HTML iconHTML

    In describing several science experiments used to validate applications of codes at Los Alamos National Laboratory, we offer an experimenter's perspective on this process within the context of the US Stockpile Stewardship Program. The validation experiments we describe validate particular models and algorithms that may be used in weapons codes. Code validation at Los Alamos National Laboratory has... View full abstract»

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  • Framework for approximating eigenpairs in electronic structure computations

    Publication Year: 2004, Page(s):50 - 59
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB) | HTML iconHTML

    Our framework, computing approximate eigensystems (CApE), efficiently approximates symmetric linear eigenvalue problems occurring in the self-consistent field method used during electronic structure computations. CApE has several algorithmic tools that both detect matrix structure in application problems and compute solutions to prescribed accuracy. View full abstract»

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  • Achieving a common view point: yaw, pitch, and roll

    Publication Year: 2004, Page(s):60 - 62
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    Objects move and tracking them is an essential ingredient in applications such as navigation and robot motion. Surprisingly, the same mathematical tools used in tracking are also used in the absolute orientation problem of comparing two objects (such as proteins or machine parts) to see if they have the same structure. In this paper, we develop the mathematical and computational tools to solve suc... View full abstract»

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  • Gentoo Linux: the next generation of Linux

    Publication Year: 2004, Page(s):66 - 74
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB) | HTML iconHTML

    The first item of business when installing a Linux system is to pick a distribution, or distro. The plethora of options includes Red Hat, Lindows, Debian, SuSe, Mandrake, Gen-too, and even the emerging Chinese standard, Red Flag. Gentoo Linux is a significant distro for several reasons. First, the entire OS is maintained from source code. Even when binary packages are directly installed, metadata ... View full abstract»

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  • The Current State of the Grid

    Publication Year: 2004, Page(s):75 - 77
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    Freely Available from IEEE
  • Nonlinear instabilities and nonstationarity in human heart-rate variability

    Publication Year: 2004, Page(s):78 - 83
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB) | HTML iconHTML

    The human cardiovascular system exhibits complex and interesting dynamics, including heart-rate fluctuations. The heart rate fluctuates irregularly - a phenomenon called heart-rate variability. Here, we present a short review of our experience with the analysis of heart-rate variability. Initially, we focused on the assessment of the risk of sudden cardiac death due to cardiac arrest. During this ... View full abstract»

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  • A picture from a thousand words [information visualization]

    Publication Year: 2004, Page(s):84 - 88
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1128 KB) | HTML iconHTML

    Anyone engaged in scientific work knows how difficult it is to keep up with the latest scientific advances. The overwhelming volume of literature-related to the growing number of peer-reviewed print outlets and Internet-based sources - combined with cutting-edge science's increasingly interdisciplinary character means that scientists, educators, students, policy makers, and funding agencies need n... View full abstract»

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  • Computer Society Information

    Publication Year: 2004, Page(s): c3
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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.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
George K. Thiruvathukal
Loyola University