An algorithm for stochastic (convex or nonconvex) optimization is presented. The algorithm is variable-metric in the sense that, in each iteration, the step is computed through the product of aâ€¦ (More)

We consider two new algorithms with practical application to the problem of designing controllers for linear dynamical systems with input and output: a new spectral value set based algorithm calledâ€¦ (More)

Acanthamoeba species infect humans occasionally and act as opportunistic pathogens in immunocompromised individuals. This study demonstrates the application of cytocentrifugation as an aid toâ€¦ (More)

We study central groupoids, central digraphs, and zero-one matrices A satisfying A = J . A survey of known results is given, including short proofs for some of them; new results and techniques areâ€¦ (More)