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 paper, based on the current researches on the regulation and control of digital cognitive competence by transcranial direct current stimulation (TDCS), adopts stimulation device developed by Tsinghua University to launch the analysis experiment of cognitive behaviors aiming at the key problem of the application effects of TDCS, compares the influences of stimulating electrode parameters on digital...
A space-time array difference magnetotelluric method is proposed in order to suppress the correlated noise and obtain reliable plane wave impedance data in strong interference region. First, we established a model of electromagnetic prospecting system with multi-input and multi-output. Both natural and man-made electromagnetic field is considered to incidence to earth simultaneously, constitute a...
Level set methods have been extensively used in contour recognition and image segmentation. The traditional level set methods require to initialize the level set function regularly and are strongly dependent on initial contour position thus there are many problems about the methods. Considering those problems, this article proposed a new level set method to draw geometric active contour self-adaptively...
We propose an extension of mutual information and a new fast algorithm to accelerate the evaluation of mutual information of images. This algorithm adopts gauss function as kernel function, and then uses fast gauss transform to reduce time complexity and improves the fast gauss transform by adaptive k-center clustering. The new algorithm can estimate smoother curves of mutual information function...
A new method for noninvasive temperature estimation is proposed in this paper. Noninvasive temperature estimation is one of key problems of high-intensity focused ultrasound (HIFU). In tissue, temperature changes, caused by HIFU, cause gray variation of the B-mode ultrasonic image, which can be used to estimate temperature. In this paper, the relation between temperature and the energy of real-valued...
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.