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In order to master the law of GIS partial discharge and electromagnetic propagation characteristics (UHF) signal propagation factors affecting GIS cavity UHF, using a finite difference analysis (FDTD) simulation studies. Based on the Insulation Experiment Station of 500kV transformer combination test fixture, build simulation model with metal spikes such defects as an example to set emission source...
Transformer magnetizing inrush current can lead false-actions of differential protection and, reduce transformer lifetime, and send higher harmonics to power grid. The paper deals with the harmful problem of magnetizing inrush current for switch-on unloaded transformer. We derive the mathematical model of magnetizing inrush current. Based the analysis of relation among magnetizing inrush current,...
This paper presents a 10Gb/s concatenated BCH encoder of super FEC. The concatenated BCH encoder module contains 32 BCH column encoder groups and 2 BCH row encoder groups. To achieve high speed, parallel encoding technique is employed. In addition, some optimization methods such as sub-expression sharing and tree-based structure are also adopted to balance the gates' fanout and reduce the delay. The...
This paper presents a new method for voltage stability evaluation of distribution network. Making use of the node voltage equation, a direct load flow solution method is found at first. This load flow algorithm can directly derive the voltage correction on imaginary axis of every node without any iteration. Then the derived correction on imaginary axis is inserted into the voltage equation which has...
Aim at the problem that airborne equipment lacks quantitative analysis of airdrop adaptability, this paper put forward to build a virtual simulation verification platform of airdrop adaptability, integrated software and hardware, which uses technology of numerical calculation, modeling and simulation and virtual test. The airdrop process of airborne equipment which includes loading, air transportation,...
Block Compressed Sensing (BCS) is one of the fundamental theories for image reconstruction. Compared with the traditional Compressed Sensing (CS) technique, it reduces the computational complexity and improves the efficiency of the reconstruction. However, the reconstruction quality of BCS is deteriorated to some degree. In order to improve the reconstruction quality of BCS, a new method based on...
Flexible hinges are widely used in micro robotic. Its rigidity directly influences an organization's terminal localization. Its actual structure geometry size cannot satisfy the theoretical analysis completely in a theoretical supposition condition. In this paper, we analyzed the rotation rigidity of symmetric elliptic flexible hinges and half elliptic flexible hinges in different parameters using...
This paper presents a no-reference objective video quality assessment method for compressed video. Only employed two parameters are involved: the change of the bit rate for the encoded video and the difference between its successive frames, and assessed the video quality by analyzing the average change of the difference between its successive frames with the bit rate variety of the encoded video....
In this paper, we study the scheduling algorithm of high efficiency and energy saving in heterogeneous environment, propose a task scheduling algorithm based on the copy, on the basis of the initial allocation task, considering the replication of task from the perspective of performance and energy balance. Establish heterogeneous task model and the mathematical model of energy consumption, and is...
A fuzzy statistical normalization for target detection in active sensing data is proposed in this paper. The first stage of the fuzzy statistical normalization is the Fuzzification of the active sensing data. Then the fuzzy inference and defuzzification operation based on statistical method and alpha-cut approach are performed, which not only attenuate the heavier tailed clutter data values, but also...
This paper explains the advantages of fuzzy control system and its implementation principle by comparison with the classical control theory and it indicates that the fuzzy control system is how to play a role with the example of robot motion control in different road conditions. Finally, the matlab simulation result shows the effectiveness of the method.
The enhancement of lung nodules in chest radiographs plays an important role in computer-aided diagnosis, and is more useful for doctor observing and analyzing. In this paper, we introduce a parameterized logarithmic image processing (PLIP) method based on Laplacian of Gaussian (LoG) filtering to enhance lung nodules in chest radiographs. This method combines the advantages of both algorithms which...
Osteoarthritis (OA) is a chronic disease that often occurs in the elderly population. Currently, the most common methods for diagnosing OA are radiographs and enzyme-linked immunosorbent assay (ELISA) method which are specific but require specialized laboratory facilities and highly trained personal. In this work, it developed a user friendly and non-invasive method that is quartz crystal microbalance...
Gröbner bases algorithm is an important symbolic method for solving polynomial equations, and S-polynomial is the crucial notion of Buchberger's algorithm. In order to improve the efficiency of Buchberger's algorithm, many researchers focused on polynomial reduction. Unlike the past approach, extended S-polynomial is introduced in this paper. It is obvious that S-polynomial is a special case of extended...
As the development of information technology in Tibetan, Tibetan language has been widely used. In this paper, a Tibetan vocabulary typing game based on a commonly used Flash action script language is designed to achieve the vocabulary display, drop, input, count and result output function. It is a simple learning tool for Tibetan language learners.
In order to decrease two-dimensional DOA computational complexity, a 2-D direction finding method is proposed with L-shape uniform linear arrays when the additive white Gaussian noises exist. A cross-correlation matrix of received signals is first constructed. Afterwards, signal subspace can be acquired by performing eigen-value decomposition of the matrix. The signal subspace is divided into two...
The article introduce an advanced fuzzy cluster analysis algorithm base on fuzzy equivalence relation and the general research steps in detail, giving an example of realization different occupation introductions and fuzzy classification base on working achievements.
Accurate segmentation of brain tumor is very difficult and challenging task due to irregular shape, size, high degree of intensity and textural similarity between normal areas and abnormal regions areas. An intensity based new methodology to segment and detect is proposed which gives more accurate segmentation and detection of abnormal regions from MRI of brain. The accuracy of segmentation methods...
Water resources informatization has accumulated a large amount of data in the construction and development process, and the heterogeneous data sources has hampered the business applications of water information. To solve the ubiquitous problems of water information at present, such as the difficulty in sharing the water basic data, as well as its deficiency in expressive force and single application,...
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