EDP Sciences
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Investigation of radio ray-path and electron density slope of the ionosphere
EDP Sciences - Tập 3 - Trang 449-452 - 1998
The three dimensional ray-path equation considering the effect of the horizontal gradient of the ionospheric electron density is obtained. By integrating in upgoing and downgoing stage, the point on the raypath can be determined and the propagation channel in HF radio telecommunication may be recknoed and predicted. Considering the effect of the electron density slope the ray-path is asymmetric ab......
BP network based users’ interest model in mining WWW Cache
EDP Sciences - Tập 11 - Trang 243-247 - 2006
By analyzing the WWW Cache model, we bring forward a user-interest description method based on the fuzzy theory and user-interest inferential relations based on BP (back propagation) neural network. By this method, the users' interest in the WWW cache can be described and the neural network of users' interest can be constructed by positive spread of interest and the negative spread of errors. This......
Multiple feature fusion in convolutional neural networks for action recognition
EDP Sciences - Tập 22 - Trang 73-78 - 2017
Action recognition is important for understanding the human behaviors in the video, and the video representation is the basis for action recognition. This paper provides a new video representation based on convolution neural networks (CNN). For capturing human motion information in one CNN, we take both the optical flow maps and gray images as input, and combine multiple convolutional features by ......
Explicit multisoliton solution to the coupled nonlinear Schrodinger equations
EDP Sciences - Tập 18 Số 4 - Trang 319-322 - 2013
A Necessary condition on comparison theorem for one-dimensional stochastic differential equation
EDP Sciences - Tập 15 - Trang 13-15 - 2010
We consider the comparison theorem of one-dimensional stochastic differential equation with non-Lipschitz diffusion coefficient. Considering the two one-dimensional stochastic differential equations as a two-dimensional equation, we present a necessary condition such that comparison theorem holds by viscosity solution approach.
The relation of department components and activity in Spatial Information Infrastructure
EDP Sciences - Tập 6 - Trang 460-466 - 2001
Spatial Information Infrastructure (SII) facilitates the sharing, interoperability and integration of geographical information among department components of a region or a country. The SII is developed and shared by different department components. The relation of department components is a fundament for collaborating tasks and information exchange in SII. There are two kinds of department compone......
Extracting result schema based on query instances in the Deep Web
EDP Sciences - Tập 12 - Trang 835-839 - 2007
Deep Web sources contain a large of high-quality and query-related structured date. One of the challenges in the Deep Web is extracting result schemas of Deep Web sources. To address this challenge, this paper describes a novel approach that extracts both result data and the result schema of a Web database. The approach first models the query interface of a Deep Web source and fills in it with a s......
Application of thermogravimetry to study the kinetics and stability of porphyrin copper-sodium of ephedra
EDP Sciences - Tập 5 - Trang 357-360 - 2000
Thermogravimetry was used to study the non-isothermal decomposition kinetics and the stability of porphyrin copper-sodium from ephedra. The kinetic equation for the second step can be expressed as
$$d\alpha /(dT) = Ae^{ - \frac{{E_\alpha }}{{KT}}} 3/2(1 - \alpha )^{4/3} /[(1 - \alpha )^{ - 1/3} - 1]$$
......
Fractals generated by statistical contraction operators
EDP Sciences - Tập 7 - Trang 274-280 - 2002
In the theory of random fractal, there are two important classes of random sets, one is the class of fractals generated by the paths of stochastic processes and another one is the class of factals generated by statistical contraction operators. Now we will introduce some things about the probability basis and fractal properties of fractals in the last class. The probability basis contains (1) the ......
“CAM-Brain” ATR's artificial brain project
EDP Sciences - Tập 1 - Trang 579-592 - 1996
This paper reports on progress made in the first 3 years of ATR's “CAM-Brain” Project, which aims to use “evolutionary engineering” techniques to build/grow/evolve a RAM-and-cellular-automata based artificial brain consisting of thousands of interconnected neural network modules inside special hardware such as MIT's Cellular Automata Machine “CAM-8”, or NTT's Content Addressable Memory System “CAM......
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