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Coping with such disadvantages of particle swarm optimization algorithm and GA as being easy to run into local optima, the method of cooperative optimization is proposed to solve the job shop scheduling problem by combing the quantum-behaved particle swarm optimization and GA. The algorithm applied the parallel hybrid architecture of collaborative quantum particle swarm and GA, in which a kind migration...
The online estimation of spacecraft center of mass (CM) plays an important role in the attitude and orbit control law design of large variety mass property spacecraft. Based on spacecraft motion equation, the method of using one point three orientations acceleration together with gyro information to estimate CM was discussed, the main error source and requirement of angle velocity was analysis. Then,...
In order to overcome the seriously constrained storage and processing problem of a single node in wireless multimedia sensor networks (WMSNs), distributed Wyner-Ziv image compression algorithm is brought forward based on Wyner-Ziv. In this paper, the pixel domain Wyner-Ziv video coding scheme is adopted to achieve the distributed video codec system, the principle and performance of the system is analyzed...
According to characteristics of hydraulic support under coal mine working face, a linear-hierarchy of wireless sensor network (WSN) is proposed including its topology generation algorithm as well as how to maintain the network topology in the event of topology changes. Establishing bottom infrastructures of WSN, cluster headers will be selected to save energy design a network layout of the cluster...
To solve the seam tracking problem of the mobile welding robot, a prototype of mobile welding robot with welding torch positioned at one side of welding robot is developed. And a new controller based on the dynamics of the mobile welding robot was designed. To make the tracking more quickly and smoothly, the controller combined the algorithm of the integral backstepping and the algorithm of the nerve...
A method of binaural sound localization based on detection of multi-band zero-crossing points generated from binaural filter-band outputs is presented. In the presented method, the ITD values are estimated by a histogram weighted by the estimated source noise rate(SNR) computed from the variances of ITD samples. As a result, the method provides an accurate estimate of sound source direction and is...
In cross-language information retrieval (CLIR), the query sentence is often combined with a series of query keywords, rather than a complete natural sentence. Lack of necessary contextual syntactic information in such a query sentence makes it impossible to achieve a unique translation of the query sentence with acceptable precision. In this paper, we convert the translation of query sentence to the...
In isotonic regression we always suppose that the means are restricted by center order. But if the order imposed on the alternative is in question, one may wish to test this order restriction as the null hypothesis with an unrestricted alternative. So this paper study this problem.
A novel method of binaural sound localization based on the dominant frequency separation is proposed. In this method, the ITD values is estimated by using the property for sound signals to keep their dominant frequency components unchanged in the frequency domain. To verify the validity of the suggested method, the test of the dominant frequency separation is made. Firstly, in frequency domain, the...
As software-as-a-service (SaaS) becomes more and more popular, the identity management and federation among SaaS applications also become an important factor impacting the growth of SaaS ecosystem. Typically, there are three major functions to be enabled in identity federation: 1) single sign-on across different services. 2) Account provisioning to different services. 3) secure backend service call...
Slow light technology has been greatly developed in the last decade. Many mechanisms have been used to slow down the velocity of light, and its potential applications have been continuously researched. In this paper a novel high spectral sensitivity optical fiber interferometer with slow-light medium is proposed, and it is applied to enhance the wavelength detection sensitivity of fiber brag grating...
The design of a calibration circuit for dual-frequency induction tool is introduced. We put the calibration circuit into calibration signal generation circuit and processing circuit. The former one is based on dual-channel reconfigurable and synchronous DDS technology with adjustable phase difference and adjustable amplitude radio. The latter one is composed of channel selection switch, cascade amplifier,...
As a classical statistical pattern recognition algorithm characterized with high accuracy and stability, KNN has been used widely in text categorization. But since KNNpsilas time complexity is directly proportional to the sample size, its classification speed is very slow. In this paper, we propose a new KNN text categorization algorithm based on semantic centre, which we call SKNN, to speed up the...
To attain the goal of preserving the edges and removing the noise for the images, a pseudo cross bilateral filter based on Laplacian pyramid is proposed. The proposed algorithm firstly decomposes the image and its filtered version into several levels via Laplacian pyramid, in which the filtered version is obtained by adaptive Wiener filter. At each level of the decomposed images, a pseudo cross bilateral...
This paper analyses how small and medium size(SMEs) professional service firms(PSFs), face the human resource management(HRM) issues. These issues will, however, be of paramount importance for service firms as they rely solely on "human capital" as their only source of production. The intention is to focus on the issues of a human resources(HR) nature and to consider how these act as growth...
With the demand of the engineering application, a method of the multi-model reference fault tolerant control is proposed. Fault models are classified detailedly, and the faults taking place in the system are identified, located, and diagnosed via neural network. A feasible multi-model reference active fault tolerant control method is proposed. Finally, a simulation example is used to demonstrate the...
Positive feedback trade is a kind of speculation during short term in financial market. This activity will cause the violent fluctuation for a given asset price, and make great influence to the stabilization of the financial market. So, it must be strong significance to research on the positive feedback trade and related controllable measures. First, we classified the former works, then the price...
To tackle the problems of Web information overload and mismatch, researchers have proposed many approaches to acquire Web user profile for topics of interest. But the traditional techniques do not provide satisfactory structures for mining Web user profile. In this paper, we present a new approach automatically mining Web user profile based on FCA (formal concept analysis) methods from positive documents...
In the classical MPLS resilience scenario, the fault recovery mechanism can only be deployed in two ways: either 100% protects traffic in protection switching case, or unprotect traffic in rerouting case. Consequently, the resource consumption is too high for network to afford if the fast recovery mechanism (protection switching) is deployed in the whole network. One of the objectives of our proposed...
This study considers the efficiency of housing markets in Shanghai, China based on some approaches of fractal theory. Specifically, we examine the housing markets via a test by R/S (rescaled range) analysis and a Hurst exponent computation. With recent housing price indices of Shanghai in China real estate index system (CREIS), we calculate Hurst exponent of housing markets in Shanghai using an R/S...
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