In this paper we present a method to generate a digital mosaic starting from a raster input image. Mosaics generation of artistic quality is challenging. The basic elements, the tiles, typically small polygons, must be packed tightly, emphasizing orientations chosen by the artist. An ad­hoc boundaries detection have to be performed according to the directional g...

The BCS theory injected two powerful ideas into the collective consciousness of theoretical physics: pairing and spontaneous symmetry breaking. In the 50 years since the seminal work of Bardeen, Cooper, and Schrieffer, those ideas have found important use in areas quite remote from the stem application to metallic superconductivity. This is a brief and eclectic sketch of some highlights, emphas...

The ideas of optimization of learning algorithms in Artificial Neural Networks are reviewed emphasizing generic properties and the online implementations are interpreted from a biological perspective. A simple model of the relevant subsidiary variables needed to improve learning in artificial feedforward networks and the ‘time ordering’ of the appearance of the respective information processing...

We present in expository style the main ideas in SGGS, which stands for Semantically-Guided GoalSensitive theorem proving. SGGS uses sequences of constrained clauses to represent models, instance generation to go from a candidate model to the next, and resolution as well as other inferences to repair the model. SGGS is refutationally complete for first-order logic, DPLL-style model based, seman...

We give an overview of some recent results on operator-valued $(L^{p},L^{q})$ Fourier multipliers and stability theory for evolution equations. The aim is to provide a relatively nontechnical introduction the underlying ideas, emphasizing connection between two areas. also indicate how can be applied functional calculus theory.

We give an overview of some recent results on operator-valued $(L^{p},L^{q})$ Fourier multipliers and stability theory for evolution equations. The aim is to provide a relatively nontechnical introduction the underlying ideas, emphasizing connection between two areas. also indicate how can be applied functional calculus theory.

Promoting a "broad view of health" is an important objective of the healthy cities movement, including recognition of the powerful role that social relations and living conditions play in the health of community members. This article presents a quantitative approach to assessing consensus and change in ideas about health determinants among local coalition members. A ranking of five determinants...

The purpose of this survey is twofold. First, we the studies percolation on fractal networks. objective to assess current state art topic, emphasizing main findings, ideas and gaps in our understanding. Secondly, try offer guidelines for future research. In particular, focus effects attributes self-similar Some challenging questions are outlined.