1077-3142/$ see front matter 2010 Elsevier Inc. A doi:10.1016/j.cviu.2009.06.009 q A demo video of the system can be downloaded ~ekenel/door_monitoring.mpg. * Corresponding author. E-mail addresses: [email protected] (H.K. Ekenel Stallkamp), [email protected] (R. Stiefelhage URLs: http://cvhci.ira.uka.de/~ekenel/ (H.K. Eke ~stiefel/ (R. Stiefelhagen). 1 Present address: Ruhr-Universität-...

The homotopy theory of the suspensions of the real projective plane is largely investigated. The homotopy groups are computed up to certain range. The decompositions of the self smashes and the loop spaces are studied with some applications to the Stiefel manifolds.

Clindoxyl Gel (Stiefel) is a combination of 1% clindamycin phosphate and 5% benzoyl peroxide in a gel vehicle that is well tolerated and more efficacious than either active agent alone or the vehicle in reducing lesion counts and improving global scores in patients with moderate acne. It was approved for once daily use in Canada in November 2001.

Recently we introduced the concept of neural networks learning on Stiefel-Grassman manifold for MLP-like networks. Contributions of other authors have also appeared in the scientiic literature about this topic. The aim of this paper is to present a general theory for it, and to illustrate how existing theories may be explained within the general framework proposed here.

In this paper we propose an algorithm for blind separation of signal sources. The algorithm is based on quasi-Newton method used in constrained optimization problems over the Stiefel manifold. The simulation results show the algorithm’s performance in recovering original signals and its convergence behavior.