Computing in Science and Engineering

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Designing scientific components
Computing in Science and Engineering - Tập 4 Số 5 - Trang 84-90 - 2002
P.F. Dubois
Correctness is more precious to scientific programmers than it is to business programmers because of the great difficulty in distinguishing between programming errors, errors in modeling, and errors in algorithms. We've all sat in meetings and discussed whether a peculiar wiggle in a graph represents an algorithm problem (such as neglecting to include a possibly negligible term) or a modeling one ... hiện toàn bộ
#Programming profession #Open source software #Costs #Libraries #Middleware #Scientific computing #Business #Sun #Packaging #Hardware
Multi-scale geophysical modeling using the spectral element method
Computing in Science and Engineering - Tập 4 Số 5 - Trang 42-48 - 2002
M. Iskandarani, D.B. Haidvogel, J.C. Levin, E. Curchitser, C.A. Edwards
The spectral element method offers distinct advantages for geophysical simulations, including geometric flexibility, accuracy and scalability. Developers of atmospheric and oceanic models are capitalizing on these properties to create new models that can accurately and effectively simulate multi-scale flows in complex geometries.
#Geophysics computing #Solid modeling #Interpolation #Polynomials #Computational modeling #Atmospheric modeling #Concurrent computing #Computer simulation #Grid computing #Finite element methods
Parallel implementation issues: global versus local methods
Computing in Science and Engineering - Tập 4 Số 5 - Trang 26-31 - 2002
S.J. Thomas, R.D. Loft, J.M. Dennis
Spectral elements are a potential alternative to the spectral transform method widely used in atmospheric general circulation models. A semi-implicit formulation permits larger time steps than an explicit formulation. Thus, a semi-implicit 3D spectral-element dynamical core should achieve high performance levels on microprocessor-based parallel clusters and substantially accelerate the climate sim... hiện toàn bộ
#Atmospheric modeling #Spatial resolution #Delay #Equations #Fast Fourier transforms #Concurrent computing #Distributed computing #Weather forecasting #Computational modeling #Parallel processing
Climate modeling with spherical geodesic grids
Computing in Science and Engineering - Tập 4 Số 5 - Trang 32-41 - 2002
D.A. Randall, T.D. Ringler, R.P. Heikes, P. Jones, J. Baumgardner
A new approach to climate simulation uses geodesic grids generated from an icosahedron and could become on attractive alternative to current models. We implemented an atmospheric general circulation model using a geodesic discretization of the sphere. Our model uses the message-passing interface and runs efficiently on massively parallel machines.
#Oceans #Atmospheric modeling #Computational modeling #Finite difference methods #Equations #Mesh generation #Atmosphere #Power harmonic filters #Solid modeling #Carbon dioxide
Matplotlib: A 2D Graphics Environment
Computing in Science and Engineering - Tập 9 Số 3 - Trang 90-95 - 2007
John D. Hunter
Keeneland: Bringing Heterogeneous GPU Computing to the Computational Science Community
Computing in Science and Engineering - Tập 13 Số 5 - Trang 90-95 - 2011
Jeff Vetter, Richard Glassbrook, Jack Dongarra, Karsten Schwan, Bruce Loftis, Stephen McNally, Gunther H. Weber, James H. Rogers, Philip C. Roth, Kyle Spafford, Sudhakar Yalamanchili
Intensity-modulated radiation therapy
Computing in Science and Engineering - Tập 4 Số 5 - Trang 8-9 - 2002
D.I. Lewin
Radiation therapy is a tricky business. The goal is to deliver as much radiation as possible to a tumor while sparing nearby noncancerous tissue. A newer approach, called intensity-modulated radiation therapy (IMRT), relaxes the requirement for a uniform dose distribution, yet delivers the radiation more accurately to the cancerous region. This dose distribution, created by small beamlets that can... hiện toàn bộ
#Biomedical applications of radiation #Cancer #Medical treatment #Neoplasms #Collimators #Cities and towns #Spinal cord #Intensity modulation #Brushes
Modeling chemical constituents of the atmosphere
Computing in Science and Engineering - Tập 4 Số 5 - Trang 56-63 - 2002
J. Feichter, M. Schultz, T. Diehl
Interactions between the atmosphere, ocean, ice, land surface, and the marine and terrestrial biosphere control the global climate system. These components are coupled by the exchange of momentum, radiative energy, and trace constituents' mass. Various processes drive this exchange and require different computational methods to model it.
#Atmospheric modeling #Chemicals #Atmosphere #Oceans #Land surface #Sea surface #Ice surface #Biosphere #Control systems #Electromagnetic coupling
Python for Scientific Computing
Computing in Science and Engineering - Tập 9 Số 3 - Trang 10-20 - 2007
Travis E. Oliphant
OpenMM: A Hardware-Independent Framework for Molecular Simulations
Computing in Science and Engineering - Tập 12 Số 4 - Trang 34-39 - 2010
Peter Eastman, Vijay S. Pande
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