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.
This paper presents a novel quadrotor UAV attitude control algorithm to realize complex acrobatic UAV maneuvers. A nonlinear dynamic model based on the exponential coordinates parametrization of rotation is proposed. By analysing the model using Lie Group and Lie Algebra theory, cascaded linear PID controllers are designed. To further improve the controller performance, PID controllers are augmented...
The maximum clique question is a paradigmatic combinatorial optimization. In order to get better solution, cuckoo search, a new meta-heuristic method was introduced. The cuckoo search was used to get better candidate solutions in this hybrid algorithm. Then, hybrid algorithm is compared with VNS and SA by standard DIMACS data sets, result shows that hybrid algorithm can get better solution in most...
PRIME is a solution for Powerline Communications in the CENELEC A-Band using OFDM modulation. SFN can be applied to PRIME system to take advantage of the repeater effect of PHY nodes in the SFN to achieve dynamic routing. Synchronization algorithm of SFN-aided PRIME system is detailly studied and anylized. The false alarm probability of synchronization algorithm is also derived. Simulation results...
This paper investigates the approximate library management problem, which is to construct an index for a dynamic text collection L such that for any query pattern P and any integer k, we can report all k-error matches of P in L efficiently. Existing work either focussed on the static version of the problem or assumed k = 0. We observe that by combining several recent techniques, we can achieve 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.