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A new method to extract fetal electrocardiogram (FECG) signal from the mixed ECG signals is presented by introducing time-correlation to traditional independent component analysis (ICA). FECG signal extraction is a hot research topic because the FECG signal reflects the heart situation of the fetus and provides the basis of early diagnosis. In this paper, an objective function based on time-correlation...
This paper includes mixed matrix estimation of underdetermined blind source separation (UBSS) under the anechoic mixing model and introduces single source points to the anechoic mixing model. First, we adopt a clustering algorithm to get the amplitude in the mixing matrix. Then, utilizing the amplitudes, We use a single source point detection method to determine the presence of only one source signal...
With the advent of large numbers of data and a large number of samples, the traditional support vector machine algorithm is not applicable because of it's too much memory overhead and time overhead. Traditional parallel SVM based on MapReduce is to separate the train data into multiple sub-training sets on MapReduce-based model, these sub-datasets are trained by SVM, and then, get the support vectors...
The system combines the wireless communication technology and medical sensor detection technology, to realize the remote medical monitoring of multiple physiological parameters. As the basis of the Android platform, the mobile health platform construct a health report with physical examination, health guidance for every members in family. After using the corresponding physiological data acquisition...
The separation of non-stationary signals is a hot topic. The blind source separation algorithms based on time-frequency analysis can not only describe the time-domain feature and the frequency-domain feature of signals but also extract the time-varying feature of non-stationary signals. Blind source separation owns better performance in solving the problem of non-stationary signals separation. In...
In this paper, a compact highly selective bandpass filter with wide upper-stopband using short-circuited microstrip coupled-line hairpin resonator is presented. The equivalent transmission-line circuit model is developed to analyze the performance of the proposed filter. There are two transmission poles existing at each resonance of a single short-circuited microstrip coupled-line hairpin unit. The...
This paper presents a miniaturized rat-race coupler with harmonic suppression. The proposed coupler only takes 15.1% of the area of the corresponding conventional coupler. Design equations are derived for analysis. Finally, the proposed coupler is fabricated for experimental verification.
Simulation training system can improve the trainer's ability, a rapid response and safety operating capability in the operation of real ship, to reduce operation accident of sailing. Intelligent examination scoring system uses the professional theory and practical experience as the evaluation criteria, and analyzes the operator's operation process to realize the automatic scoring through the program...
Automatic and real-time monitoring of the deformation and instability of slopes and crags is an effective means to predict landslide and other geological disasters. It helps grasp the disaster rules, make a timely qualitative or quantitative safety evaluation, and minimize the disaster occurence and damage. The ZigBee-based WSN (Wireless Sensor Network) technology was used to real-time sample and...
As Scheduling for real time polling services (rtPS) is not defined in IEEE 802.16 standard, there are various approaches described to address this issue. IEEE 802.16 has detailed documents about the QoS parameter. However, they do not mention the scheduling algorithm to be used. The essential goals of this packet scheduling scheme are to guarantee the QoS parameter as well as provide fairness among...
The IEEE 802.16 standard is proposed to provide a wide-range broadband wireless service, but it leaves the implementation of the wireless resource scheduler as an open issue. We study the scheduling algorithm and propose a fairoriented two-level scheduling scheme for downlink traffic in a WiMAX network. A central controller (Base Station) has a number of users, and different mobile subscriber stations...
Fast dissolution nanofiber membranes were prepared using electrospinning process with Ferulic Acid (FA)--a traditional Chinese medicine as the active pharmaceutical ingredients and a pharmaceutical hydrophilic polymer--polyvinylpyrrolidone K30 as the filament-forming matrix. Field Emission Scanning Electronic Microscopy (FE-SEM), Differential Scanning Calorimetry (DSC), Attenuated Total Reflection...
Most of the MAC and routing protocols proposed for wireless ad hoc networks are based on omni-directional antenna. Omni-directional antenna distributes energy in all directions, not only causing unnecessary interference to other nodes, but also reducing the potential range of the transmission. In this paper, we propose a novel medium access control and routing protocols for wireless ad hoc networks...
A new model combined weighted gray correlation analysis with DEA (data envelopment analysis) was presented in this paper. It integrates the advantages of both DEA and gray correlation analysis, and takes the latter as a central model. In the model, DEA determines the weight vector of correlation coefficients for each decision-making unit (DMU) to calculate the relatively optimal correlation degrees...
According to analyzing and researching the concept and structure of trusted computing, this paper reviews the relative work of security operating system based on trusted computing. Then a security model based on trusted computing IBLP is advanced through the improvement of a classical security model BLP. The overall design scheme and modularized implementation of a secure operating system for trusted...
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