We study the two and three dimensional, N=2, 3, nonlinear dispersive equation CN(m,a+b): u(t)+(u(m))x + [u(a)inverted delta2ub]x=0 where the degeneration of the dispersion at the ground state induces cylindrically and spherically symmetric compactons convected in the x direction. An initial pulse of bounded extent decomposes into a sequence of robust compactons. Colliding compactons seem to eme...

Given a set of strings U = {T1, T2, . . . , T }, the longest common repeat problem is to find the longest common substring that appears at least twice in each string of U , considering direct, inverted, mirror as well as everted repeats. In this paper we define the generalised longest common repeat problem, where we can set the number of times that a repeat should appear in each string. We pres...

The relationship between liking and stimulus complexity is commonly reported to follow an inverted U-curve. However, large individual differences among complexity preferences of participants have frequently been observed since the earliest studies on the topic. The common use of across-participant analysis methods that ignore these large individual differences in aesthetic preferences gives an ...

Properties of the Act-r conflict resolution suggest the possibility of modelling a behaviour at different activation levels of the autonomic nervous system. A model of the classical Yerkes-Dodson experiment was built to test the predictions. The resulting model explains such psychological phenomena as the inverted-U curve, relating performance to arousal, within the mathematical representations...

Many psychological and physiological studies with simple stimuli have suggested that perceptual learning specifically enhances the response of primary sensory cortex to task-relevant stimuli. The aim of this study was to determine whether auditory discrimination training on complex tasks enhances primary auditory cortex responses to a target sequence relative to non-target and novel sequences. ...

Historical experience shows that the economy-wide energy intensity develops nonmonotonically like an inverted U, which still lacks direct theoretical explanations. Based on a model of structural change driven by technological differences, this paper provides an attempt to explore the underlying mechanisms of energy intensity change and thus to explain the above empirical regularity accompanied ...