I nformation security problems cost millions of dollars for US companies and billions for the overall US economy, according to a joint survey by the Computer Security Institute and the US Federal Bureau of Investigation Nowadays, the question is not whether organizations need more security, but how much to spend for added security.And yet investing in IT… (More)
Integrating a company's risk profile for threats, vulnerabilities, attacks, and outcomes to determine costs and benefits of IT security solutions
PURPOSE To investigate the effects of interferon-beta-1a (IFN-beta-1a) on the trafficking of cell populations in peripheral blood cells of multiple sclerosis (MS) patients. METHODS In this open-label pharmacodynamic study, peripheral blood was obtained from 10 relapsing-remitting (RR) MS patients just prior to and at 1, 2, 4, 8, 24, 48, 120, and 168 h… (More)
We prove that a matroid with at least two elements is a tangle matroid if and only if it cannot be covered by three hyperplanes. Some consequences of this theorem are also noted. In particular, no binary matroid of rank at least two is a tangle matroid.