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.
A real-time discrete event simulation platform for Internet end-system targeted attacks, EA-CPNsim, is presented in this paper. This platform provides support for modeling the targeted end-systems behavior and the attack effect, helping the system administrator chooses and verifies the defense schemes, and evaluating the system consequences. EA-CPNsim is constructed based on the CPN tools, a widespread...
A novel product data management mode, CVPDS (Collaborative Visualization Production Development System), which is based on the cooperative design and visualization technology, is proposed in this paper. It also analyzes and establishes the system frame, discusses the key technology of cooperative visualization development and the implementing management flat; studies the realization method of 3D virtual...
A novel structure of the integrated cascode crystal oscillator is presented by analyzing the discrete oscillator circuits in this paper. A temperature-independent voltage source, which is suitable for integrated circuits, was used for biasing of the buffer amplifier, while eliminating the bypass capacitor. Both the oscillator circuits and the buffer amplifier use the common divider resistance. The...
In active noise control, the Filtered-x LMS algorithm has been widely used,but it is inefficient to the nonlinear noise control; then the Filtered-s LMS algorithm using the FLANN structure to solve the nonlinear problem, but these two algorithms need identification of secondary path and may converge to local minima; this paper using FLANN structure and genetic algorithm (S-GA) ,which don’t need identification...
In response to the roller bearing fault of the engineering vehicle, the excellent characteristics of time-frequency of wavelet packet is used to decompose the fault signal. Then we extract the necessary of the fault signals. Finally, we carry out the recognition of fault types using multi-class support vector machine and dynamic clustering algorithm brought forward in the paper. It is such a algorithm...
The paper aims at present the acute toxic effect of water-accommodated fraction (WAFs) of No.0 diesel oil on embryos and larvae development of sea urchin, Hemicentrotus pulcherrimus by adopting embryonic development technology. The experiment was carried out with six concentrations. The results indicate that the water-accommodated fractions have evident toxic effect on two - arm and four - arm larvae...
Aiming at the overlapping phenomenon that exists among the cells in the actual mice macrophages image, this paper presents the method of image segmentation based on Otsu threshold and watershed of distance transform. The image is first segmented by Otsu threshold algorithm. Then erosion and dilation morphological operators are used to get rid of noises. Finally, the watershed algorithm based on distance...
Knowledge visualization and retrieval are the key techniques to implement effective knowledge management. Traditional research on knowledge map emphasizes on building global view of knowledge base, but ignores its support to knowledge retrieval. In this paper, a searchable knowledge map model is proposed. Based on this model, we extent the search-ability of knowledge map and propose three practical...
An important target in ontology evolution is to guarantee ontology consistency when changes occur. Most of previous work focused on providing general methods for handling abstract changes, but ignored detailed methods for the specific changes, especially those property range changes which often arise in practice. This paper presents a process to apply a request change, by focusing on the specific...
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.