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.
Layer velocity modeling is not enough for high accuracy pre-stack imaging. But block velocity modeling may accurately describe complex subsurface geological structure. Through the research of seismic exploration block modeling method, this paper proposes a new practical workflow about block modeling, researches Delaunay triangulation algorithm, achieves surface structure geometrical modeling, and...
Three single-phase H-bridge DVR is a kind of dynamic voltage restorer (DVR) which is used very widely. The traditional analysis method of compensation strategy has some shortcomings so that it is not suitable for this kind of DVR. A new analysis method which could overcome the shortcomings of the tradition method is proposed in the paper. The new method not only has definite physical concept but also...
Drugs tender procurement is a complementary policy of Chinese Health Care Reform, which has been promulgated and implemented since 2000 in China, and has achieved good results. Bidding-evaluation and Bidding-decision are often accepted as the key points in the bidding process. A successful bidding is directly caused by a scientific bidding-evaluation system. This paper mainly focuses on the system...
80 wt.% Au, 20 wt.% Sn solder is used in optoelectronics because it allows soldering in fluxless processes. Au-Sn solder is also applied in the field of RF and MEMS packaging. Normally the deposited solders are re-flowed after electroplating but it is also possible to use the bumps in the as-deposited condition. Au-Sn solder which has been reflowed consists of an Au pedestal with a eutectic solder...
The dynamic model of a physical simulation experiment system for flexible satellites is given. The measurement model of the accelerometer placed at the end of the flexible panel is established and an adaptive filter is used for its data processing. Feedback control using vibration information obtained from the accelerometer signal is designed. The physical simulation experiment results show that 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.