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The paper presented a simple and reliable real-time ECG signals detection method which was named Derivative Windows Algorithm (DWA). Firstly, the algorithm detects QRS wave group by method of baseline-opposite amplitude-derivative, then detects TP wave by method of mean-variance-window. And finally, we simulated DWA algorithm in Matlab and performed the algorithm in ARM7TDMI-S subsequently according...
This paper describes a method of generation of forces from a two-dimensional static image to make texture tangible using haptic devices. The proposed technique consists in creating a height map computed thanks to Tsai & Shah algorithm - an algorithm in shape-from-shading. This height map is then used to generate the virtual surface, and forces fields creating haptic texture are calculated by a...
Objective: To study the superiority and application prospect of generalized regression neural network (GRNN) which is used in forecasting the incidence rate of hypertension. Methods: Use meteorological data, including average temperature, average pressure and relative humidity, and hypertension incidence rate from January 2003 to December 2008 as the input of neural network. Use the incidence rate...
This paper presents a driving intention intelligent identification method for hybrid vehicles based on fuzzy inference. In this paper, a fuzzy logic inference system is developed to identify driving intention. The membership functions and rules of fuzzy logic inference system are built for intention identification and the simulation is done in different driving conditions. The simulation results show...
SOA is a new methodology to be used in the software development in recently. But the interrelated standards and specifications about SOA are very complicated and confused for most users. After analyzing the misapprehending on the application of SOA, it gives some reasoning and suggestion for the uses of SOA, and shows a sample about the light-weight SOA product model. A new approach based on SOA and...
The acquisition equipment is the most important part in remote reading system base on low voltage power line carrier, it decides the data exactness and stabilization of the whole system. First to introduce the hardware design of an acquisition equipment; second to give an especial method to design the acquisition equipment software, this especial method is based on a storage strategy named token-ring,...
With a powerful capability in nonlinear mapping, the neural network has been applied widely in pattern recognition and nonlinear estimation. Based on the theoretical model of vegetation ecological water requirement in arid areas, this article has estimated the vegetation ecological water requirement in lower Heihe River reaches, by use of back propagation (BP) network and radial basis function (RBF)...
This article established the assessment model of Fuzzy Comprehensive Assessment (FCA) and Analytic Hierarchy Process (AHP), based on the methods of AHP and FCA, and applied this model in the comprehensive profit assessment (CPA) of ecological water compensation in Heihe River basin. The result of this research is realistic and able to be popularized.
The progress of virtual reality technology demands more about the real-time and naturalness of the interface. Based on the classification research on human-computer interfaces in 3D scene, this paper explored the real-time 3Dimensional User Interface (3DUI) in virtual reality interaction, and through practices on the 3DVIA Virtools platforms, presented the implementation principle and some specific...
Visual textual CAPTCHAs have been widely used on Internet banking in China to defend against malicious bot programs. In this paper, four categories of representative CAPTCHAs are chosen to break. We present an efficient method for solving visual textual CAPTCHAs using image processing techniques and instance learning, such as graying, thresholding, interference noises removing, segmentation, character...
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