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.
The electromagnetic launch system is an advanced complex system, which is developed by use of the advantages of the pulse power technology and advanced control technology. To overcome the bottle-neck in the improvement of launching efficiency, this paper has proposed a novel model and analyzed some factors which influence the system efficiency. Simulations and experiments show that increasing the...
Commutation failure is a serious malfunction in high-voltage direct current (HVdc) converters and is mainly caused by ac side faults, where the change of dc current during fault conditions should be given adequate attention. Employing superconducting fault current limiters (SFCLs) for an HVdc system can suppress its dc fault current’s amplitude and maintain a small rate of the dc current change, which...
Intrusion alert analysis system correlates alerts that generated by one or more IDS(s), and yields a succinct attack scenario which reflects an intrusion process. This paper presents an intrusion alert analysis model consists of four modules: alert formalization, alert filtering, alert fusion and correlation, and scenario visualization. Alerts are fused and correlated using approach based on finite...
This paper studies the efficiency of aluminum future market by Zipf-typed Analysis model, which was used to natural language field. We transformed the return of aluminum future to a time series only contained the characters of -1, 0, 1 by certain thresholds. We inspected the values of absolute frequencies and relative frequencies of the time series and observed a weak phase transitions phenomena in...
This paper studies the price behavior of Chinese copper future by Zipf-type analysis model. We transformed the closing copper future price data to series only contained up-down information by certain thresholds. We have observed phase transitions phenomena in copper future market, and identified three critical points, at which the heterogeneous agents transit their trading behaviors. We found 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.