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.
Smart meter, as a key part of the smart grid, is responsible for collecting the user characteristics in the advanced metering infrastructure. As more and more applications have been upgraded to the IPv6 protocol, 6LoWPAN can potentially replace the ZigBee as the standard protocol in the “Internet of Things” area. Representing an application of IPv6 technology in the smart metering, this article introduces...
In this paper, a control strategy using Dynamic Matrix Control algorithm is proposed to enhance the already installed PID controller for the control of the coal flow delivered to the power plant boiler. The future control inputs are calculated by solving the quadratic optimization problem using Hildreth algorithm. Two cases are considered in testing and comparing the performance of the new DMC control...
In this paper, the three dimensional modeling of 2JK mine hoist spindle was established by using Pro/ E according to given data. Then the model was inputed into the finite element analysis in ANSYS, the stress distribution of the spindle was obtained, strength check of the dangerous section was made at the same time. which provides a accurate and reliable theoretical basis for improving the spindle...
According to the thought of intelligent forecasting and hybrid forecasting, an Intelligent Hybrid (IH) model for short-term traffic flow forecasting was presented. The IH model had three sub-models: History Mean (HM) model, Artificial Neural Network (ANN) model and the Fuzzy Combination (FC) model. By means of the good static stabilization character of HM method, the HM model predicted the traffic...
Aiming at the problem of satellite communication signal and jamming blind separation in noisy environment, a new method is presented which combined joint approximate diagonalization (JAD) of the fourth order cumulant matrix and post-position wavelet de-noising. The new method has solved the problem that the performance of previous ones become worse at jamming-to-signal-ratio (JSR) exceeded 30 dB when...
The paper presents a newly developed nonlinear tube-ball mill model for model based on-line condition monitoring. This mathematical model is derived through analyzing energy transferring, heat exchange and mass flow balances. Evolutionary techniques are adopted to identify the unknown system parameters using the on-site measurement data. The identified system parameters are then validated using multiple...
Understanding the effect of frequency and number of elements on suppressing the grating lobes is of importance for the design of the phased array. In this study, acoustic field simulation model of a spherical phased array for focused ultrasound surgery is described. The influence on performance of frequency (0.8 to 1.5 MHz) and number of circular elements (45 to 90) in the array is investigated for...
With the rapid development of the Internet, Web log mining, which is used to find useful information about users from Web log files, has become a heat issue of research. The aim of association rule mining is to find interesting and useful patterns in a transaction base. This paper makes use of variable precision rough set theory to retrieve the associated rules from Web log and applies the rules to...
This paper discusses two patterns in data mining: association rules and sequential patterns, and describes the process to find these patterns by mining historical securities trading database. Through the analysis of mining result, this paper presents the concept and realization of customer behavior model, and successfully applies the model to advance the performance of Internet securities dealing...
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.