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To deal with the fusion failure problem of multiple location points in case of multiple emitters, a new location method by position information field (PIF) is presented. Firstly, the location precision by measuring two-dimensional directions is analyzed, and the covariance matrix of position error is deduced. Then, through the choice of different kernel functions the emitter PIF function is constructed...
Log-polar transformation (LPT) is a well-known tool for image registration. LPT makes rotation and scale change in Cartesian coordinate appearing as translation in log-polar domain. Translation can be obtained using phase correlation techniques. However, in the current LPT methods, when images are sampled, the fixed number of samples tends to result in low precision. Aiming to this issue, this paper...
This study was design to test the reliability and validity of test via mobile phone based platform (MPBT) administered into potential PTSD sufferings in Mianzhu, Sichuan province, and examine the equivalence with traditional paper-and-pencil test (PPT) counterpart and gender differences. In the case of Children's Revised Impact of Event Scale (CRIES), the MPBT form had acceptable psychometric properties,...
Driving is a complex man-machine process, color signal is an important factor for affecting driving fatigue. In the course of driving simulation, using different color signals to stimulate the drivers, through subjective questionnaires and measuring the changes in drivers?? physiological parameters, to research the changing law of the drivers?? heart rate, respiratory rate and other physiological...
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