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.
In the study of gas-liquid two-phase flow and heat transfer of evaporative cooling generator, has important significance to test the accuracy of void ratio. This paper first introduces the principle of ray testing, should pay attention to the selection of γ-ray source. The ray test two-phase flow void ratio of the experimental platform is established. The test data and drift model, one-dimensional...
A method for 3-D seismic refraction tomography is presented. We have applied a new approach for processing 3D seismic refraction data using waveform modeling to image underground pipes using short channel spacing. This approach successfully obtained accurate high definition 3D ground model. More than 10 surveys were done to image underground pipes and voids. The purpose of this study is to test the...
Preference restraint cone data envelopment analysis model is recommended and extended to interval number case. A mew model for project selecting has been established based on preference restraint cone data envelopment analysis model and interval data envelopment analysis. The approach is illustrated by an example. It is shown that the introduced model is convenient for integrates decision-maker's...
Grey model and support vector machine are fit for prediction in the small size of data, their advantages and disadvantages are probed in this paper at first. And then, the combined model is proposed, which combines grey model and support vector machine with optimal weights. The weights are obtained and optimized by minimizing the sum of squared residuals standard. Some experiments compared with grey...
Analyzing the characteristics of wood biomass gasification process comprehensively and considering the impact of gasification temperature as well as the amount of catalyst on gasification gas components, gas yield, gas production rate, the calorific value and gasification efficiency, sawdust gasification process model based on LSSVM (least squares support vector machine) was set up. Based on this...
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.