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The information gradient-based routing and navigation protocols have been proved to be effective when collecting data from the distributed wireless sensor networks, because the data collector can achieve the global objective through local greedy decision based on the information gradient. An efficient method to establish this information gradient is to solve a discrete approximation to the harmonic...
As a kind of large-power, single-phase and nonlinear load, the electrified railway produces a great deal of harmonic, which has a severe impact on the power quality in power system. In this paper, a set of practical indicators is put forward firstly, in order to analyze the transmission characteristics of the harmonics and negative sequence voltage and current in power network quantitatively. Secondly,...
In this paper, a dual-functional device with power divider and filtering is designed with high selectivity and wide stopband in a compact size. A filter is used to replace the quarter-wavelength line of the traditional power divider. The filter consists of two half-wavelength resonators with same fundamental frequency and different harmonics. Thus, the out-of-band rejection is enhanced. To verify...
The information gradient-based routing protocols have been proved to be economical and effective by adopting the principle of achieving the global objective through local decision, but lightweight methods to construct the information gradient should be fully investigated, especially in a large-scale network with high information dynamics. In this paper, we focus on the construction of the information...
Prediction of the 3D structure of protein-protein complexes is crucial for understanding the biological system of life and thus for designing drugs. However it is a challenging problem due to the flexibility of the backbone and side-chains of the receptor and ligand. In this paper, we present a new framework for fast and flexible protein-protein docking based on geometric and physicochemical complementarity...
The decomposition process for the extraction of harmonics components from compressed power quality data was required under the frame of Shannon sample theory, but it increased the complexity of data procedure. A compressed sampling matching pursuit (CoSaMP) method was presented to detect harmonics from compressive sensing (CS)-based compressed power data sequence avoiding decompression pretreatment...
this article will use the generalized ridge regression in system harmonic impedance analysis and the harmonic evaluation. Based on the equivalent circuit of the system, users can obtain system harmonic impedance, the background harmonic and common connection point, the analytical expression of the harmonic. Using the harmonic voltage and current data which will be got in the common connection point,...
There are many methods in building local geomagnetic field, such as polynomial method, interpolation method, Spherical Cap Harmonic Analysis and Rectangular Harmonic Analysis. Curve Surface Spine Function and Multi-surface Function are two interpolation methods. The model based on interpolation passes each node compared with fitting method. It can be proved that the interpolation method can get more...
This paper presents a new harmonic measurement scheme based on lifting wavelet transform (LWT) for shunt active power filters (APFs). As one of methods to build second-generation wavelets, LWT can be easy to achieve in time domain for its original bit location calculation. And it could lessen calculation complexity and depress course due to its particular structure, compared with first generation...
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