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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
[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...
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...
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...
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...
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....
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...
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...
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...
