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In this paper, the Newmark-Beta algorithm is introduced into the finite-difference time-domain (FDTD) method in dispersion media, resulting in an unconditionally stable method for periodic metallic grating analysis. The proposed method eliminates the Courant–Friedrich–Levy constraint and improves the simulation efficiency for multiscale problems. The dispersion of the metal, which is caused by the...
This paper revisits the problem of designing a static anti-windup gain for enlarging the domain of attraction of the resulting closed-loop system. By utilizing a composite quadratic Lyapunov function, which was originally proposed to study the stabilization problem for linear systems under actuator saturation, an existing LMI based design algorithm is enhanced to result in a nonlinear, possibly continuous,...
Usability is an important measurement of software quality. Effective usability evaluation method and analysis technique on usability data always help to achieve high usability. A numerical measurement in usability evaluation can facilitate the comparison between different designs of product prototype. In this paper, we propose a simulation approach based on FSM to abstract the user interface rules...
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