The herd behavior of the Cont Bouchaud model is amplified by allowing clusters to copy decisions of some other cluster in the next time step. The results of the model are compared to data from Warsaw Stock Exchange. It follows that the mechanism of the amplified imitation could be responsible for the sell decision on a poorly developed, emergent market.
The double exponential function which approximates the distributions of accelerations and decelerations in heart rate can be used in assessing vasovagal pathophysiology evoked by the head-up tilt test. We test how the coefficients of the exponential decay depend on the bin size used in the numerical construction of distributions. These coefficients turn out… (More)