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In this paper, a CMOS digitized wind transducer implemented by wind speed to frequency converter with calibration circuits is newly proposed. A calibration technique is proposed in this work. Another innovation is that the outputs of the proposed chip are directly digitized, they could be easily sent over a wide range of transmission media, such as PSN, radio, optical, IR, ultrasonic, and etc. Before...
In this paper, a practical approach to detecting user attention for online learning systems using gaze and speech activity information is proposed. A portable camera and microphone system to acquire human-computer interaction data is used in this approach. User attentiveness is classified into three categories: attentive, inattentive-not looking, and inattentive-speaking. Experimental results show...
Conference proceedings front matter may contain various advertisements, welcome messages, committee or program information, and other miscellaneous conference information. This may in some cases also include the cover art, table of contents, copyright statements, title-page or half title-pages, blank pages, venue maps or other general information relating to the conference that was part of the original...
In this paper, an analog optical-comparator-based VLSI velocity and direction motion sensor is newly proposed. Without using complicated calculation as performed by DSP, the proposed chip is attractive due to the fact that the proposed method is low-cost, and easier to be implemented. The chip area is 1.47 × 1.49 mm2. The detecting speed range is from 0.009 to 1.5 m/s. All the functions and performance...
Based on the three-phase voltage source PWM rectifier of voltage oriented control, a method of the main parameters design is proposed. The static and dynamic characteristics of the system are affected by the parameters of the hardware seriously. The mathematical of three-phase PWM rectifier is set up, the simulation of the system is done with Matlab/Simulink, and the application example is realized...
This paper proposes a photovoltaic (PV) array simulator based on the topology of the buck converter and digital control strategy. First of all, a photovoltaic array simulation model is established by analysis of current-voltage characteristic curve of the photovoltaic cell array. To simplify the control model, the output current-voltage simulation curve is piecewise fitted. The buck convertor is controlled...
This paper presents the 7-term Harris window and interpolated FFT harmonic analysis method for electrified railway. In addition, the paper discusses the harmonic characteristics of electrified railway and the sidelobe characteristics of the 7-term Harris window. Whenanalysis harmonic signal, good sidelobe characteristics of window function are needed. While the characteristics of the mainlobe do not...
Distribution and Utilization communication network carries not only the information of distribution network control, but also the information of all the distributed energy resources and power consumption measurement. However, the data flow and services flow prediction is very hard to plan and predict. This paper proposed the model that was very useful for the capacity and structure of distribution...
In this paper, a rolling ultra-short term wind power prediction (WPP) based on an online sequential extreme learning machine (OS-ELM) algorithm is presented. Two issues are specially considered to improve the wind power forecasting effect: wind speed sequence correction and error interval evaluation. Three independent OS-ELM based neural networks are accordingly designed: the single wind turbine generator...
In this paper, we propose a new projection-based registration scene based non-uniformity correction technology. Technically, the newly raised technology is a kind of interframe registration NUC algorithm but with more advantages. We propose a new projection estimator to calculate the relative displacement of the neighboring frames. The estimator uses the column and row projection vector to calculate...
Background and purpose: As one of the major types of programmed cell death (PCD), necrosis has been observed and demonstrated to be responsible for cell death and the mechanisms responsible for necrosis are still not very clear. This study reviews that programmed cell death (PCD), including apoptosis and necrosis for C6 glioma cells is related to p53-reactive oxygen species (ROS). Methods: The C6...
Based on MAX-MIN Ant System (MMAS), we proposed a novel algorithm to minimize the idle traveling of tool path on cutting 2D intensive multi-contour patterns. The proposed algorithm consists of four steps: 1) use standard MMAS algorithm to define the pattern order; 2) seek the appearing node according to the pattern order; 3) optimize the node sequence with MMAS algorithm; 4) repeat the step 2) and...
In a k-threshold secret sharing scheme, a dealer who holds a secret s distributes parts of this secret (the shares) to n players; If k or more of these players pool their shares, they are able to determine s, but if less than k of them pool their shares, they cannot infer any information on s. In 1979, Shamir introduced such a scheme, based on polynomial interpolation in a finite field. This scheme...
Acoustic telemetry technology for Well Logging While Drilling(LWD) is one promising kind of LWD data transmission technologies. It takes the elastic wave propagating along the drill string as carrier to transmit downhole measurement data up to the ground. However, polluted by the acoustic noises which are produced by drilling rigs and mud circulation, as well as attenuated during the process of propagation,...
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