Abstract: In this paper particle swarm optimization(PSO)has been applied for the design of the optimal robust controllers for third order systems . The controller design problem is posed as constrained nonlinear optimization problem. The parameters of the chosen controller are obtained solving the nonlinear constrained optimization problem.The performance index which has been used in the design is integral square error(ISE).The constraints are frequency domain performances related with robust stability .

• Publication Date: 24-Feb-2013
• DOI: 10.15224/978-981-07-5461-7-44
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Abstract: The cost of a single zero-day network worm outbreak has been estimated at US$2.6 billion. Additionally zero-day worm outbreaks have been observed to spread at a significant pace across the global Internet, with an observed infection proportion of more than 90 percent of vulnerable hosts within 10 minutes. The threat posed by such fast-spreading malware is therefore significant, particularly given the fact that network operator / administrator intervention is not likely to take effect within the typical epidemiological timescale of such infections. An accepted tool that is used in researching the threat presented by zero-day worms is the use of simulation systems. However when considering zero-day worm outbreaks on the Internet there are persistent issues of scale and fidelity. The Internet Worm Simulator (IWS) reported in this paper is designed to address these issues by presenting a novel simulation method that, on a single workstation, can simulate an entire IPv4 address space on a n

• Publication Date: 24-Feb-2013
• DOI: 10.15224/978-981-07-5461-7-45
• Views: 0
• Downloads: 0