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11 Resources for

computation

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Computation of Elementary Modes: A Unifying Framework and the New Binary Approach
This white paper deals with the concept of elementary flux modes that provide a rigorous formalism to describe and assess pathways and has proven to be valuable for many applications. However, computing elementary modes is a hard computational task. In recent years we assisted in a multiplication of algorithms dedicated...
Tags: BioMed Central, computation, network
White papers 2004-11-04
Application of CFD to the Computation of Complex Rotorcraft Configurations
This paper presents typical results which were obtained at ONERA during the past years of the CHANCE program, which aims at the development and validation of CFD tools for computing the aerodynamics of the complete helicopter, taking into account the coupling with blade dynamics. The results presented concern elsA computations...
Tags: Blade servers, Utility computing, ONERA, computation, blade, disk, tool
White papers 2004-09-24
Computation of Fan Tone Noise Generation and Radiation From Engine Inlets
In this paper a source-to-far-field computation chain aiming at predicting the noise generated by rotor-stator fan interactions and radiated from the inlet is presented. It is applied to a turbofan model, tested in DNW -LLF anechoic wind tunnel in the framework of DUCAT project. Interaction noise sources are assessed by...
Tags: ONERA, computation
White papers 2004-09-13
Parallel Chimera Computations of Helicopter Flows
In the CFD field, chimera method is a meshing technique that enables to deal with complex geometries using overset structured grids. In the context of parallel scalar computers, its efficiency can be raised by balancing the overset grid blocks over the machine processors. In this paper, the chimera method has...
Tags: PRODUCTIVITY, ONERA, computation, grid, technique, processor, computer, software
White papers 2004-09-09
Modal Expansion Functions Combined With EFIE Applied to Air Intake / Engine RCS Computations
This paper introduces a sub-domains technique for analyzing the EM scattering from 3D cavities. The Electric Field Integral Equation is used to compute the generalized Scattering matrices of the sub-domains. Wave-guided modes are used for modeling the field propagation from the cavity opening down to the engine face. RCS patterns...
Tags: ONERA, computation, modeling, 3D, technique
White papers 2004-05-25
3D Navier-Stokes Computations of a Stall-Regulated Wind Turbine
In this paper several 2D and 3D Navier-Stokes computations performed with the compressible elsA solver, developed at ONERA, on the wind turbine tested by NREL in the NASA Ames large wind tunnel are presented. After a brief description of the tools and methods used, the prediction of the S809 airfoil...
Tags: ONERA, computation, turbine, 3D, 2D, analysis, performance, tool
White papers 2004-04-29
Computation of Broadband Noise Radiated by a Ducted Fan in an Uniform Flow
Prediction of ducted-fan broadband noise has become a challenge for reducing aircraft turbofan noise because it dominates overall sound levels at subsonic rotation tip speeds. This paper discusses the equations established in a previous work for a uniform flow inside the duct, the free medium being at rest (case of...
Tags: Network technology, Broadband Internet, ONERA, computation, broadband, aircraft
White papers 2003-08-28
Unifying Method for Computing the Circumcircles of Three Circles
Given a set of three generator circles in a plane, we want to find a circumcircle of these generators. This problem is a part of well-known Apollonius' 10th Problem and is frequently encountered in various geometric computations such as the Voronoi diagram for circles. In addition, there can be several...
Tags: computation
White papers 2003-02-14
Alternative Valuation Techniques: Economic Value Added (EVA)
Economic Value Added EVA analysis is an analytical tool towards computation of accrued shareholder value in the organization. It measures the surplus value created by an investment. The computation of this value is imperative in optimizing an organization’s financial strategy within the strategic management framework. The Discounted Cash Flow DCF...
Tags: Economic value-added analysis, Investment, Indiana University, Economic Value Added, computation, valuation, strategic management, shareholder, analysis, financial, tool
Presentations 2003-01-01
Improvements on Computations of High Speed Propeller Unsteady Aerodynamics
This paper presents the application of the CANARI flow solver to the computation of unsteady effects in the aerodynamic interaction of a high speed propeller with the aircraft. The method is first validated on the APIAN isolated propeller test case by comparison with experiment at M=0.7. The method is then...
Tags: Aerospace & Defense, ONERA, computation, aircraft, 3D, analysis
White papers 2001-10-10
Automatic Generation of Staged Geometric Predicates
This white paper deals with the Algorithms in Computational Geometry and Computer Aid-ed Design that are often developed for the Real RAM model of computation, which assumes exactness of all the input arguments and operations. In practice, however, the exactness imposes tremendous limitations on the algorithms {even the basic operations...
Tags: Carnegie-Mellon University, computation, computer
White papers 2001-06-01

Additional Resources

Park City Group Reports Pact with International Supermarket Retailer
FOOD AND BEVERAGE CLOSE-UP-8 June 2009-Park City Group Reports Pact with International Supermarket RetailerC2008 - CloseUpMedia - newsdesk@closeupmedia.com Park City Group, a developer and marketer of patented computer software and consulting services for retailers, announced that as a result of its customer experiencing ongoing and substantial increases in...
Articles 2009-06-08
Time to green up the data centres: a new survey shows that while CEOs and CIOs may be championing green information technology, the reality is that many companies are still in the "talking" phase or still have no plans to green up their data centres. This article looks at the key findings and examines what this means for business and the wider community
[ILLUSTRATION OMITTED] WE'VE I HEARD so much about green information technology' IT, initiatives recently you'd be forgiven for thinking that everybody had this under control. You might be surprised to learn that storage vendor ONStor found that 58 per cent of the companies they surveyed were either still...
Articles 2008-12-01
What's hot: and what's hotter
The first Shooting, Hunting and Outdoor Trade SHOT Show I attended was in Dallas in 1989. It was a big show then and has only gotten bigger. Frankly it verges on being too big. It has gone from three days to four, and even so I have to plan carefully...
Articles 2008-08-01
Mediware's JAC Awarded UK ASCC Framework Contracts
MediwareInformation Systems, Inc. (NASDAQ: MEDW), a provider of ClosedLoopTMclinical systems for blood and medication management, announced that theCompany's UK-based JAC ComputerSystems has been appointed to the ASCC Additional Supply Capabilityand Capacity framework contract in both the e-prescribing and pharmacystock control categories. The ASCC contracts provide a framework...
Articles 2008-07-16
DIAGNOS and First Source Resources Enter Into a $3M Services Contract
DIAGNOS inc. ("DIAGNOS" or the "Corporation") (TSX VENTURE: ADK), a leader in the use of artificial intelligence and advanced knowledge extraction techniques, and First Source Resources Inc. ("First Source") (TSX VENTURE: FSR) announced today that they have entered into a service agreement to explore an area covering approximately 37,000,000 acres...
Articles 2008-07-16
Tripwire Granted Patent for Integrity Based Fail Over
The U.S. Patent Office has granted Tripwireits third patent. Customers have applauded Tripwire's leadership inconfiguration control and change auditing since the company's founding in1997 -- and analysts recognize Tripwire as the go-to product for ensuringthe continuous integrity of IT configurations, helping ensure regulatorycompliance, mitigating security risk and improving IT availability....
Articles 2008-07-16
Get a Deep Insight into the Future Handset Connectivity Technologies
Reportlinker.com announces that a new market research report related to the Hardware computer equipment industry is available in its catalogue. Future Handset Connectivity Technologies http://www.reportlinker.com/p090953/Future-Handset-Connectivity-Technologies.html Future Handset Connectivity Technologies gives first-hand insights into the development of Bluetooth, WLAN, NFC and UWB technologies for mobile handsets. This...
Articles 2008-07-16
D-Link(R) Xtreme N(TM) Dual Band Router Crowned 'King' by PC Magazine; Hailed as 'Ultimate Choice' by LAPTOP
D-Link, the end-to-end networkingsolutions provider for consumers and business, has received top industryrecognition for its new Xtreme NTM Duo Media Router DIR-855 from both PCMagazine and LAPTOP Magazine. The D-Link DIR-855 is a powerful dual band 802.11n wireless routerengineered to maximize speed, range and performance of a Wi-Fi network whenrunning...
Articles 2008-07-16
Symantec and Toshiba to Offer Norton 360 and Norton Internet Security to Laptop Customers
Symantec Corp. (NASDAQ: SYMC), makers ofNorton security software, today announced that Toshiba America InformationSystems, Inc., Digital Products Division and Toshiba of Canada Limited willinclude Norton 360 or Norton InternetSecurity 2008 on all of its laptop computers. Toshiba will offer afull-featured complimentary 60-day introductory subscription...
Articles 2008-07-16
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White papers (10 results)