The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In order to improve the accuracy of wind speed prediction, the paper proposed a brand new prediction model, called the nonlinear least squares autoregressive moving average model, which based on the wavelet decomposition and reconstruction. Firstly, this model introduces the wavelet transform, which decomposes the original non-stationary wind speed sequence into a relatively stable sequence; Then...
As a kind of huge moving obstacles, wind turbines have a serious impact on weather radar performance, and so the analysis of electromagnetic scattering characteristics of wind turbine is significant for the identification of wind farm clutter and the influence evaluation on weather radar. In this paper, calculation of radar cross scattering (RCS) of wind turbine is firstly achieved by using electromagnetic(EM)...
With the rapid development of microelectronic technology, thermal behavior of interface structure has become one of the priorities in microelectronic reliability research. Multi-scale coupled analysis has gradually become the main analysis method of the interface heat transferring problem. The coupled method and key modeling technology among MD (Molecular Dynamics), ISE (Interface Stress Element)...
Interpolation methods are very important in computational aeroelasticity in both the closely and loosely coupled analysis method. In this paper, the characteristics of thin plate splines (TPS), multiquadrics surface spline methods(MQ) and kriging method were first analyzed for interface data interpolation in computational aeroelasticity. Through the analysis of different methods, a hybrid interpolation...
The dynamics and kinematics model is very important for the analysis of stability, manipulation and control of stratosphere airship. A full modeling approach that includes the computation of aerodynamics of airship and the added mass for the nonlinear dynamics simulation of stratosphere airships is proposed in this paper. In this approach, the aerodynamics of airship is calculated based on a panel...
InAlGaN quaternary alloys were grown on nitrided sapphire, AlN nuclear layer and GaN layer by radio-frequency plasma-excited molecular beam epitaxy (RF-MBE). Reflection high-energy electron diffraction (RHEED), Rutherford back-scatter spectrometry (RBS), atomic-force microscopy (AFM) and high resolution X-ray diffraction (HRXRD) were used to characterize the InAlGaN alloys. Different buffer layers...
To combine the merits of symmetric key cryptosystem and public-key cryptosystem, the authors present a key distribution scheme based on both the Rabin public-key system and the Chinese remainder theorem (CRT) for conditional access system (CAS) in digital TV broadcast, in order to solve dynamic access control problems in user hierarchies. Due to the simplicity of key generation and derivation, the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.