Botnets are now the key platform for many Internet attacks, such as spam, distributed denial-of-service (DDoS), identity theft, and phishing. Most of the current botnet detection approaches work only on specific botnet command and control (C&C) protocols (e.g., IRC) and structures (e.g., centralized), and can become ineffective as botnets change their C&C techniques. In this paper, we present a...

Abstract Sputtered Ti–rich TiNiCu alloys are known to show excellent cyclic stability. Reversibility is mostly influenced by grain size, crystallographic compatibility and precipitates. Isolating their impact on stability difficult. Ti 2 Cu precipitates for instance believed enhance reversibility showing a dual epitaxy with the B2 B19 lattice. Their influence functional fatigue, if they partly ...

This paper considers the effects of gravitational induced uncertainty on some well-known quantum optics issues. First we will show that gravitational effects at quantum level destroy the notion of harmonic oscillations. Then it will be shown that, although it is possible(at least in principle) to have complete coherency and vanishing broadening in usual quantum optics, gravitational induced unc...

This paper improves van Zyl’s Nonnegative Eigenvalue Decomposition (NNED). Orientation angle compensation and helix scattering are introduced to the decomposition. The volume scattering parameters that explain the most cross-polarized power are selected. If volume scattering and helix scattering explain all cross-polarized power in the measured coherency matrix, then simply perform van Zyl deco...

This thesis focuses on characterising and understanding robustness in Boolean models of genetic regulatory systems, both in terms of abstract models — specifically the Random Boolean Network model — and in terms of models of real-world regulatory systems. More specifically, the characterisation of robustness to state perturbation is considered in terms of features of a system’s dynamic structur...