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.
Holographic reconstruction is an inversion method with which the sound radiation characteristics of the sound source can be reconstructed by using nearfield acoustic holography. In this paper, the sound field holographic reconstruction method is researched based on the sound field reconstruction model of nearfield acoustic holography. Using MATLAB and LabVIEW virtual instrument software platform,...
This paper is aimed at making diagnosis for turbine blades by processing data. In this paper three kinds of feature are extracted, using time-domain analysis, wavelet packet decomposition and fractal analysis respectively. K-means algorithm is improved to classify data. The method of improved ReliefF is taken to allocate weights of each feature. This article calculates combined feature center distance...
An improved Discontinuous Galerkin Time-Domain (DGTD) method based on regular hexahedron is proposed for reducing the computational complexity. The derivation process of the equations and calculation method is described. And the explicit scheme of DGTD Maxwell's curl equation based on regular hexahedron is given. By comparing with the general DGTD method, this method has a more simplified form and...
We proposed a straightforward and highly efficient DGTD implementation of the Uniaxial Perfectly Matched Layer (UPML). Discontinuous Galerkin method (DGM) is imposed on both the UPML Maxwell's curl equations and the auxiliary differential equations (ADE). By recording the intermediate results in the updated processes of E-fields and H-fields, the computation time for auxiliary variables in ADE can...
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.