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In this study, it was attempted to construct damage assessment model which could systematically analyze and predict the effects on the semiconductor devices. At first, the PIN diode was designed and manufactured for both the simulation and radiation test. After that the radiation test were performed to it with Gamma-ray. Next, after inputting the pulse model similar to that used in the measurement into 3D model PIN diode with the same parameters of the process design, the behavior of the instantaneous charges which were generated inside the devices were analyzed and the output current value was simulated. The results obtained from the two processes showed the similar characteristics

The conductivity of the rubber composition used in tank pads is an indication of consistency and quality. Two simple, nondestructive procedures to obtain the approximate average electrical conductivity of rubber at microwave frequencies are investigated. One system involves two horn antennas obliquely angled toward the rubber pad. Conductivity is inferred from measurement of the received power reflected from the rubber as compared to received power from a flat metal conductor. Although the model is mathematically simple, the system is difficult to implement due to the very small power level of the received signal,The other system consists of an open-ended waveguide terminated with a large flange and placed at normal incident flush against the sample. The measured complex reflection coefficient of the rubber at the waveguide aperture is the quantity used to infer conductivity. This system is easier to implement, but interpretation of the measured reflection coefficient is computationally intensive. In addition, the interpreted value of conductivity are very sensitive to phase measurement error. >

A fuzzy logic-based gain tuner for tuning gains of PID controllers is proposed. The tuning is completed by the fine tune following the rough tune of gains under the stabilized operation established by the Lyapunov function-based stabilizer. Simulation results on a speed controller of induction motors are presented to show the effectiveness of the proposed gain tuner.