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In new ship isolated power system, fuzzy controllers were used to control energy storage module against load fluctuation. Taking residual capacity allowances of energy storage module as input singles, fuzzy controller dynamically regulated the total goal leveling power of energy storage module and the respective goal leveling power of energy storage module. Residual capacity allowances and output...
The technology fMRI is popular and feasible in researching human brain function, but the processing data produced by fMRI is tough. Presently, there are some kinds of methods for processing data, but they have its advantages and disadvantages, and some have slow convergence rate and bad stability. According to fMRI data's characteristics, we plan to use GA which has been done some modification. Though...
Our goal is to develop a high performance SPECT system for simultaneous SPECT-MR imaging of small animals (SA). The SPECT system has inner diameter (ID) of 15.4 cm and outer diameter of 19.8 cm. It comprises five seamless cylindrical detectors, each with 19 CZT modules (2.54×2.54 cm2, 16×16 pixels). The SPECT system can be operated either stand-alone or as an insert into an MRI system with a minimum...
Many applications involve map visualization. Nevertheless, almost all of them display the map in the same style, which often cause information overloading. In this paper, we present a novel user-centered 2.5D focus context map visualization technique. Instead of treating all the information equally, we can custom the map according to user requirements. The main contributions of our technique are in...
While many approaches have been developed to visualize 3D city scenes, most of them exhibit the visualization results in a uniform rendering style. This paper presents an expressive rendering approach for visualizing large-scale 3D city scenes with various rendering styles integrated in a seamless way. Each view is actually a combination of the photorealistic rendering, the nonphotorealistic rendering,...
about EEG, we could seem as a chaotic attractor, and the identification EEG has been changed into the identification of non-linear parameter. In the identification processing, we find that the optimized algorithm PSO is better to produce a adaptive result.
The local scour depth is a key parameter in the design of levee engineering. Based on experiment data, a non-dimensional analysis for the prediction of local scour depth of slanting stream is presented, The maximum scour depth is related to the approach flow velocity, flow depth, flow angle, slope of levee and the particle size of the bed sediment. The test experience formula for estimation of the...
This paper presents an on-line equivalent algorithm for power system based on phasor measurement unit. The method considers the changes of the system parameters and load level, which overcome parameters rift problem and the shortage of traditional two points power flow method that supposing the parameters are fixed after a small disturbance. On this basis, voltage stability and Alert margin are proposed,...
Assembly modeling, one of the most important technologies of virtual assembly, not only reflects the integrity of assembly information, but also serves as the foundation of assembly simulation and planning. In order to extract the complete assembly information from assembly model, this paper proposes a hierarchical constraint assembly model for assembly sequence planning. It is established on detailed...
Multiple description coding (MDC) is a promising approach for video transmission over unreliable channels. The descriptions generated have temporal correlations between frames and spatial correlations in each frame. Therefore, in view of exploring these correlations, a novel scheme, that is, joint temporal-spatial error concealment is proposed in this paper. Experimental results show that better performance...
The cross structures in the South-to-North Water Diversion Middle Route Project face tremendous flood risk. Using Bayesian Network theory and complete learning method, the nodes and structure of the Bayesian Network are first decided and the parameters of each node are determined secondly. The conditional probability table of the cross structure node is determined using the conversion table developed...
This paper takes into account the effect of the transfer of power grid operation mode during the study on reactive power optimization control. And it is proposed that a multi-objective reactive power optimization model including transformer stalls, constraints in the operation mode transfer process, the reactor and so on. The iterative algorithm of optimization and power flow calculation is used to...
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