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Sudden changes of channel coefficients in a wideband vectored wireline system (such as G.fast) due to changes in the terminating impedance of lines outside the vectored group can seriously degrade stability and throughput. This letter presents a model that predicts the impact of termination mismatch based exclusively on crosstalk data for the properly-terminated state. Experimental results confirm...
This virtual simulation training system is a kind of generation using virtual reality technology, and it is suitable for simulation training virtual environment, it can be a true reproduction of a practical training bases or facilities, can also be a fictional world, the trainees in a virtual environment as the backing, immersed in it, for the corresponding study and training. Mainly from the following...
On the basis of object-oriented and component technology, software reusability in GIS software design and development is implemented. Four level models about GIS are propounded, the order: the view level, the implement level, the control level and the data model level. In the mean time, this paper uses the spatial database to store spatial information and terrain data document to store terrain information...
A shipborne helicopter platform, which can compensate wave motion, is useful for a helicopter to land and take off safely. In order to solve the time delay problem of hydraulic cylinder, the prediction for the generalized heave motion (the coupling result of roll, pitch and heave) of the platform is needed. An Automation Regressive (AR) model is proposed to do the short time prediction for its low...
Support vector machines (SVMs) are provided with great abilities of analyzing data with the characteristics of small sample-sets, high dimension, nonlinear, high noise. They are applicable to deal with machine learning problems of industries. The paper brought forward to taking advantage of multi-classification SVMs to evaluate the sensory qualities of products according to the data feature of such...
A shipborne helicopter platform, which is connected with a ship by hydraulic cylinders, is helpful for a helicopter to land and take off safely. The large inertia of the system arouses the problem of time delay when the system running. In order to solve that, the short time prediction for the generalized heave motion (the coupling result of roll, pitch and heave) of the platform is needed. In this...
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