We present a new technique to measure the complex surface impedance of the mixed state of superconducting thin films over the broad frequency range 45 MHz-20 GHz. The surface impedance is extracted from measurements of the complex reflection coefficient made on the film using a vector network analyzer. The technique takes advantage of a special geometry in which the self-fields from currents fl...

In this paper we propose some improvements to a recent decomposition technique for the large quadratic program arising in training Support Vector Machines. As standard decomposition approaches, the technique we consider is based on the idea to optimize, at each iteration, a subset of the variables through the solution of a quadratic programming subproblem. The innovative features of this approa...

Recently, Sun proposed a private-key encryption scheme based on the product codes with the capability of correcting a special type of structured errors. In this paper, we present a novel method to improve the information rate of Sun’s scheme. This method uses the added error vector to carry additional information. Some information bits are mapped into an error vector with the special structure ...

on a finsler manifold, we define conformal vector fields and their complete lifts and prove that incertain conditions they are homothetic.