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.
There are many difficulties in top-down earthwork construction, such as great difficulty in excavation, long time in construction and the diversity and complexity in arranging machine, etc. Cyclic operation network (CYCLONE) apply queueing theory and simulation technique to network planning technique, through the simulation of cyclic construction process and stochastic process, provide complete decision-making...
Based on system value engineering and grey theory, an assessment model about the disaster-bearing capacity of city's lifeline after dam-break is put forward. First, the connective reliability of the city's lifeline after dam-break is put forward. Second, the relation between loss and function is established and the loss through function reliability is obtained. At last, the assessment model about...
The aim of this paper is to solve the next two questions: (1) The quantitative assessment and classification of the disaster loss is a complex and difficult work. It often encounters the problem that different people will arbitrarily create different membership functions for the same issue, so the results of different model can not be compared. (2) The evaluation factors may have mutual relationships...
Fuzzy reliability analysis is of great importance for structural engineering such as arch dams, large concrete dams etc. In this paper, an improved method of fuzzy reliability analysis on deep sliding surface in rock foundation under dam is established. Firstly, this paper discussed how to determine the probability density function of structure. Secondly, according to the knowledge of fuzzy mathematics...
In this paper, the nonlinear seismic response of arch dams is presented using the method of Rate-dependent Plastic Damage Constitutive Model, in which damage variables varying with strain rate are introduced as internal variables. The dam-foundation-reservoir dynamic interaction and nonlinear contact of joints are included in the analysis. The effects of straining rate and loading history on concrete...
A new method is proposed to provide to estimation direction arrival of signal received without any Doppler frequency information. The paper propose and analyze a new algorithm called adaptive blind Doppler estimate algorithm based on Doppler orthogonalized. The efficient of algorithm is confirmed by theory analyze and computer simulations.
In China power systems began to carry out the international standard protocol-IEC60870-5-101 as the communication protocol for telecontrol, teleprotection, and associated telecommunications in 1998. For the sake of the generalization of IEC60870-5-101 standard and the development of the high quality software, this paper introduces the finite state machine (FSM) theory for design of the communication...
Objective: A method for separating mRNAs by means of the polymerase chain reaction (differential display mRNA), and identifying the genes related to radiation-induced lung cancer was introduced. Methods: The RNAs were isolated from two pairs of samples, SV40-immortalized human fetal tracheal fibroblast cell (SHTF) versus αSHTF cell (transformed SHTF cell induced by α particles) and lung cancer tissue...
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.