• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2004.07a
• /
• pp.353-356
• /
• 2004

This paper discribes the analysis of the I-V characteristics of 4H-SiC DiMOSFET with single epi-layer Silicon Carbide has been around for over a century. However, only in the past two to three decades has its semiconducting properties been sufficently studied and applied, especially for high-power and high frequency devices. We present a numerical simulation-based optimization of DiMOSFET using the general-purpose device simulator MINIMIS-NT. For simulation, a loin thick drift layer with doping concentration of $5{\times}10^{15}/cm^3$ was chosen for 1000V blocking voltage design. The simulation results were used to calculate Baliga's figure of Merit (BFOM) as the criterion structure optimization and comparison.

• Wind and Structures
• /
• v.31 no.6
• /
• pp.549-560
• /
• 2020

Methods for stochastic simulation of non-Gaussian wind pressure have increasingly addressed the efficiency and accuracy contents to offer an accurate description of the extreme value estimation of the long-span and high-rise structures. This paper presents a linear prediction and z-transform (LPZ) based Cumulative distribution function (CDF) mapping algorithm for the simulation of multivariate non-Gaussian fluctuating wind pressure. The new algorithm generates realizations of non-Gaussian with prescribed marginal probability distribution function (PDF) and prescribed spectral density function (PSD). The inverse linear prediction and z-transform function (ILPZ) is deduced. LPZ is improved and applied to non-Gaussian wind pressure simulation for the first time. The new algorithm is demonstrated to be efficient, flexible, and more accurate in comparison with the FFT-based method and Hermite polynomial model method in two examples for transverse softening and longitudinal hardening non-Gaussian wind pressures.

• The Korean Journal of Emergency Medical Services
• /
• v.28 no.2
• /
• pp.131-142
• /
• 2024

Purpose: This study aimed to explore the use of web-based virtual simulations to improve the learning flow, problem-solving ability, and academic self-efficacy of paramedicine students. Methods: This study used a pre-post comparison design with 40 pamedicine students at one university. the participants were third grade students and participated in web based virtual simulation(vSim®). The difference between the pre-post was analyzed using a Paired Sample t-test with SPSS 26.0. Results: After web based virtual simulation using vSim® program than before, significantly higher learning flow(t=12.74, p<.001), problem-solving process(t=5.78, p<.001), academic self-efficacy(t=2.77, p<.001), Paramedic-Care Skills Confidence(t=6.30, p<.001). Conclusion: The results indicated the positive effects of web-based virtual simulation(vSim®) learning method and suggests implications for learners and instructors.

• Proceedings of the KSME Conference
• /
• 2005.11a
• /
• pp.179.2-179.2
• /
• 2005

• Proceedings of the Korean Society for Bio-Environment Control Conference
• /
• 2000.11a
• /
• pp.30-33
• /
• 2000

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2013.05a
• /
• pp.77-78
• /
• 2013

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2008.10a
• /
• pp.383-385
• /
• 2008

• Proceedings of the Optical Society of Korea Conference
• /
• 2005.07a
• /
• pp.298-299
• /
• 2005

• Proceedings of the SAREK Conference
• /
• 2003.07a
• /
• pp.244-244
• /
• 2003

• Translational and Clinical Pharmacology
• /
• v.26 no.3
• /
• pp.142-142
• /
• 2018