Spicules are Bright and Dark

Bright and Dark Solitons

Departamento de Teoría de la Señal y Comunicaciones e Ingeniería Telemática Universidad de Valladolid, ETSI Telecomunicación, Campus Miguel Delibes s/n 47011 Valladolid, Spain Phone: +34 983 185545, Fax: +34 983 423667, e-mail: [email protected] Joule Physics Laboratory, School of Sciences, Institute of Materials Research University of Salford, Salford M5 4WT, UK Phone: +44 161 295 5079, Fax: +...

How are Bright Galaxies Embedded within their Dark Matter Halos?

Recent studies suggest that the orientations of large, bright galaxies within their dark matter halos are related to the morphologies of the galaxies themselves. Elliptical galaxies tend to be oriented such that, in projection on the sky, the mass (i.e., the dark matter) is well-aligned with the luminous galaxy. On the other hand, disk galaxies tend to be oriented such that their angular moment...

Bright Light from Dark Matter

Coupling between dark and bright solitons

We discuss the mutual coupling of solitary waves of two di$erent types, dark and bright, due to nonlinear interaction between the modes with different signs of group-velocity dispersions, and find a novel class of vector solitons. We investigate the stability of these dark-bright solitons and reveal an important mechanism of soliton stabilization. PALS: 03.40.Kf; 42.50.Rh

Bright and dark sides of computational intelligence

The paper describes basic concepts of neural networks and fuzzy systems. It is shows that most commonly used neural network architecture of MLP – Multi Layer Perceptron is also one of the least efficient ones. Also most commonly used EBP – Error Back Propagation algorithm is not only very slow, but also it is not able to find solutions for optimal neural network architectures. EBP can solve pro...