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POI recommendation aims to recommend places which users have not visited before. In this paper, we proposed a POI recommendation method using location similarity, which assumes that people may be interested in the places that are similar with the places that they have been to before. In order to calculate the similarity of locations, we proposed a novel method using time slots. Every two hours can...
The primary selection of test signals is the foundation of design for testability. However, since the lack of data in the preliminary design phase for testability, it is difficult to quantitatively gain the test signal set with the highest cost-effectiveness ratio through calculation. According to the fact mentioned above, this paper proposes a primary selection method for test signals based on QFD...
The underground infiltration sewage treatment system has invests, the equipment to be simple few, the expense is low, management simple and so on characteristics. Through increase voluntarily the development's microorganism microbial inoculum improvement soil character and in the enhancement underground infiltration system microorganism activeness, and carries on the microbial inoculum the physiological...
A promising trend of image processing is to incorporate some knowledge on human visual system. In this paper, we propose an improved pulse coupled neural network (PCNN) for image enhancement. We apply the passive membrane equation, which is known as a model for describing the ON-OFF opponent property of the receptive fields of the retinal ganglion cells, as the linking field to modulate feeding field...
Researchers pay more attention to the LEO (low earth orbital) collision simulation after the collision of US-Russia satellites this year. In the LEO collision simulation, the positions and the attitudes of LEO satellites and the positions of space debris are simulated, and then the times and the orbital positions of possible collisions are calculated. Since there are large-scale LEO objects, it is...
In the distribution network fault location, because of the cement pole earth fault and the existence of the wire distribution capacitance makes the C type traveling wave method and the AC signal injection method can not work effectively. DC signal injection method solves the problem of the two methods' blind area. The advantage of it is free from to wire distributing capacitance influence, and the...
Three nonlinear equalization algorithms are discussed for the case that training sequence is not available but channel state information (CSI) is known. The first algorithm is based on the extended Kalman filter (EKF). The second one is based on decision feedback equalization (DFE), where a modified DFE (MDFE) is proposed. Both of the two algorithms use CSI directly. Independent of CSI, the third...
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