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.
An improved method based on the D-H method is proposed for a 5-DOF manipulator with special structure which is difficult to establish joint transformation by using normal D-H method. The forward kinematics of this manipulator with special structure is established by adding virtual joint. The method is suitable for manipulators with rotating joints, and the coordinate transformation must be achieved...
Rolling bearing's running state has an important influence on the health condition of rotate machinery. This work focuses on the remaining useful life prediction of the rolling bearing. An auxiliary particle filter-based predictor for rolling bearing is presented. The energy spectrum feature of vibration signal is selected as the representation of system degraded states. The wavelet packet decomposition...
Dual-energy Computed Tomography (DECT) is a useful tool that has been used widely in the security field and clinical diagnosis, because of its outstanding capability of material identification. One of the widely used pre-reconstruction methods for DECT is dual effect decomposition method. But the method only takes the compton scattering and photoelectric effect into consideration and ignores other...
The developing of photon counting detectors makes it is feasible to obtain multi energy information from one X-ray source. Based on the photon counting system, this paper proposes a simulation of multi energy BMD method, which can lead to the promotion of current BMD accuracy as well as providing multi information of human tissue. In our simulation, we generalize the conic surface equation fitting...
In dual energy computerized tomography (DECT) which is widely used in industrial areas and security inspection, metal artifact reduction (MAR) is a troublesome problem. Pronounced streaks appear in the atomic number reconstruction and the value appears to be highly inaccurate when metal objects are present. In this article, a practical MAR method for DECT is proposed. Firstly, sinogram segmentation...
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.