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Computing in Science & Engineering

Issue 5 • Sept.-Oct. 1999

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Displaying Results 1 - 16 of 16
  • Phase transitions and critical phenomena

    Publication Year: 1999, Page(s):10 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (105 KB)

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  • Dynamic Fracture Analysis

    Publication Year: 1999, Page(s):20 - 23
    Cited by:  Papers (8)
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  • Terms of life defined in agreement with fate.com - A fantasy

    Publication Year: 1999, Page(s):104 - 105
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  • Computer-simulated Fresnel diffraction using the Fourier transform

    Publication Year: 1999, Page(s):77 - 83
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The study of Fresnel diffraction is an integral part of any course in physical optics. Fresnel diffraction occurs when an aperture is illuminated with coherent light and the resulting diffraction pattern appears on a screen, a finite distance from the aperture. In general, the techniques found in standard optics texts' to compute the intensity of the diffraction pattern as a function of position o... View full abstract»

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  • Enabling synchronous math discussions on the Web

    Publication Year: 1999, Page(s):74 - 76
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    In an increasingly interconnected world, communication tools play an essential role in facilitating the exchange of ideas and discussions over the Internet. In particular, we must have profession-specific tools for synchronous distance collaboration that focus on users' interests, such as mathematics and science. As early as 1990, when the original view of the Web emerged, scientists realized it w... View full abstract»

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  • Extending Python with Fortran

    Publication Year: 1999, Page(s):66, 68 - 73
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Python is a great scripting language. It is portable, free, and has a powerful numerical facility, object oriented features, and a library of modules that enable a huge variety of applications: cryptography, image processing, special effects for movies, Web programming, Web site search engines, and so on. The authors have created a tool, Pyfort, for connecting Fortran routines to Python. To use Py... View full abstract»

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  • Numerical simulation of macroscopic traffic equations

    Publication Year: 1999, Page(s):89 - 98
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (796 KB)

    The increasing need for efficient traffic optimization measures is making reliable, fast and robust methods for traffic simulation more and more important. Apart from developing cellular automata models of traffic flow, this need has stimulated studies of suitable numerical algorithms that can solve macroscopic traffic equations based on partial differential equations. The numerical integration of... View full abstract»

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  • Cruising digital ships on electronic seas

    Publication Year: 1999, Page(s):16 - 19
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    Naval architects now use a different kind of ship model, a hydrodynamic computer simulation, to design faster, quieter, or more economically efficient ships for the world's navies, merchant marines, and cruise lines. A leader in the use of computers to determine the hydrodynamic behavior of surface and undersea craft is the US Navy's David Taylor Model Ship Basin, part of the Naval Surface Warfare... View full abstract»

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  • Large-scale atomistic simulations of dynamic fracture

    Publication Year: 1999, Page(s):56 - 65
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1636 KB)

    The authors provide a survey of state-of-the-art molecular dynamics simulation of materials, shedding light on various facets of the rich phenomena of dynamic fracture. It is concluded that within 10 years, we will see petaflop computers perform trillion-atom MD simulations to include the effects of microstructures that span diverse length scales up to the mesoscale regime above micron. Within the... View full abstract»

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  • Don't subtract the background [signal count analysis method]

    Publication Year: 1999, Page(s):84 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    When phenomena occur at the threshold of detection capabilities, event rates are low and observers usually record data as discrete counts. In this article, I outline a statistically reliable and efficient method for analyzing signal counts superimposed on background counts that are not subtracted before the data are analyzed. The Poisson statistics of the data are used with a maximum likelihood es... View full abstract»

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  • Computer science and the evolution of genetic information

    Publication Year: 1999, Page(s):12 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Taken as a whole, research efforts in biocomputing and genomic evolution offer fertile ground for the development of new theoretical insights and future avenues for research in multiple fields, while also posing new ways of viewing old or existing problems. Not only do biological and computational sciences stand to benefit, but continued work in this area might even provide the hands-on engineer w... View full abstract»

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  • Processes controlling fast fracture of brittle solids

    Publication Year: 1999, Page(s):24 - 31
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1084 KB)

    Brittle fracture in solids has attracted the attention of engineers and physicists because of both its technological interest and inherent scientific curiosity. Bridging the different approaches requires extensive experimental investigations and multiscale computational schemes. The authors discuss the microscale processes that control the development of fast fracture in brittle materials View full abstract»

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  • Bridging time and length scales in semiconductor process model development

    Publication Year: 1999, Page(s):100 - 103
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The development of new semiconductor device materials is currently dominated by costly and time-consuming experimental investigations in which growth parameters are varied and correlated, ex situ, to device characteristics. Model-based process development has the potential to assist greatly in optimizing growth parameters and providing models that are suitable for use in in-situ process control. R... View full abstract»

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  • Fracture and damage at a microstructural scale

    Publication Year: 1999, Page(s):32 - 38
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    Studying fracture surfaces of materials has been very useful in discriminating between different theoretical models. In the future, models and simulations should be able to help design suitable microstructures for tough materials. It is concluded that experiments in quantitative fractography perhaps have raised more questions than answers. However, they have proved useful in discriminating between... View full abstract»

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  • Scalable molecular-dynamics, visualization, and data management algorithms for materials simulations

    Publication Year: 1999, Page(s):39 - 47
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1884 KB)

    Highly efficient algorithms for massively parallel computers, interactive virtual environments for analyzing and steering simulations in real time, and data compression and mining schemes for input/output and knowledge discovery have led to rapid progress in large scale molecular dynamics simulations involving millions of atoms. Consequently, dynamic fracture of materials with realistic microstruc... View full abstract»

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  • Molecular dynamics of cracks

    Publication Year: 1999, Page(s):48 - 55
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    Brittle objects fail because of cracks. But how and why do they move? The answers to these questions hide down at the atomic scale. Simple analytical models point to numerical simulations of brittle fracture that can be compared directly with laboratory experiments. These simulations do not yet agree with experimental results because the atomic force laws on which the computations rest are not yet... View full abstract»

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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.

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Editor-in-Chief
George K. Thiruvathukal
Loyola University