We propose a feature extraction method for a newly developed vibratory image sensor. The proposed method extracts a local log-polar symmetry as image feature. In this article, it is shown that log-polar symmetric patterns include well-known characteristic points such as edges, corners, peaks, and so on. The principle of our method is as follows: a periodic vibration of an image sensor modulates...

Habitat use by mule deer was studied in the Mapimí Biosphere Reserve in the Chihuahuan Desert, Mexico. The deer population in this area is distributed among isolated hills and sierra. Because of their similar soil and vegetation characteristics, these hills are a homogeneous element of the landscape. This study was carried out within this element, in order to understand the habitat variables th...

We investigate a tritrophic system whose cyclic dominance is modelled by the rock-paper-scissors game. consider that organisms of one or two species are affected movement limitations, which unbalances spatial Performing stochastic simulations, we show mobility unevenness controls population dynamics. In case slow species, predominant depends on level restriction, with being preponderant if limi...

The societal diffusion of information and communications technologies (ICTs) remains starkly uneven at all scales. It is in the contemporary city that this unevenness becomes most visible. In cities, clusters and enclaves of ‘superconnected’ people, Ž rms and institutions often rest cheek-by-jowel with large numbers of people with non-existent or rudimentary access to communications technologie...

We demonstrate the existence of stochastic resonance (SR) in confined systems arising from entropy variations associated to the presence of irregular boundaries. When the motion of a Brownian particle is constrained to a region with uneven boundaries, the presence of a periodic input may give rise to a peak in the spectral amplification factor and therefore to the appearance of the SR phenomeno...