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 control problem of linear discrete-time systems with constraints of control, state and initial state is studied. State feedback control law of linear constrained systems is designed based on positively invariant sets of linear systems so that all given initial states of system asymptotically transfer to the origin while all constraints are satisfied. Firstly, the problem of the existence of the...
New materials of bolosaurs from Dashankou, a Late Permian locality near Yumen, Gansu are described in detail. Based on the characteristics: prehensile and forwardly directed incisor, transversely widened cheek teeth with laterally placed single cusp, the remains are referred to Belebey vegrandis Ivachnenko, 1973.
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.