Tracking with a discriminative classifier becomes popular recently. The online updating makes it easy to adapt to target appearance variations. However, this also brings drifting problem. It’s necessary to find a tracking method with strong adaptivity and anti-drifting ability. In this paper, an online semi-supervised boosting method is proposed at first, and based on it, we propose a novel tra...

We have studied the formation of relativistic solitary waves due to nonlinearinteraction of strong electromagnetic wave with the plasma wave. Here, our plasma isrelativistic both in temperature and in streaming speed. A set of equations consisting ofscalar and vector potentials together with a third order equation for the enthalpy inphoton gas plasma is obtained analytic...

Nauhaus I, Nielsen KJ, Callaway EM. Nonlinearity of twophoton Ca imaging yields distorted measurements of tuning for V1 neuronal populations. J Neurophysiol 107: 923–936, 2012. First published November 23, 2011; doi:10.1152/jn.00725.2011.—We studied the relative accuracy of drifting gratings and noise stimuli for functionally characterizing neural populations using two-photon calcium imaging. C...

The basic form of drifting sub-pulses is that of a periodicity whose phase depends (approximately linearly) on both pulse longitude and pulse number. As such, we argue that the two-dimensional Fourier transform of the longitude-time data (called the Two-Dimensional Fluctuation Spectrum; 2DFS) presents an ideal basis for studies of this phenomenon. We examine the 2DFS of a pulsar signal synthesi...

Received: 27 September 2005 Revised: 28 September 2005 Accepted: 29 September 2005 I first met Claudio in Oslo around 1980. Like so many others we met because of Kristen Nygaard. At this time Claudio spent some months at the University of Oslo as a visiting scholar doing research (together with Leslie Schneider) on the practical impacts of the ‘data agreements’ between the Norwegian trade union...