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상용차 트레일러 Yaw Stability 향상을 위한 모델링
김명석(Myungsuk Kim),이재웅(Jaewoong Lee),이형철(Hyeongcheol Lee) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
This paper investigates the modeling of commercial articulated vehicle for yaw stability improvement. A tractor-semi-trailer vehicle is a large commercial vehicle consisting of a semi-trailer which carries a load and a tractor which tows semi-trailer, Incase of traffic accidents caused by commercial vehicles are especially dangerous. Because the semi-trailer truck has larger size and mass than the vehicles. Most of major accidents occur because of commercial vehicles yaw roll stability. Through modeling of commercial vehicle to 5 wheel model, model can be used simulation with control algorithm. It is verified that the proposed modeling is effective for improvement of commercial vehicle`s yaw and roll stability. The modeling proposed in this paper is validated by computer simulation software, TruckSim and MATLAB/Simulink.
합리적 부정기능을 지원하는 플래시 저장장치를 위한 새로운 플래시 명령어
조건희(Geonhee Cho),김명석(Myungsuk Kim),김지홍(Jihong Kim) Korean Institute of Information Scientists and Eng 2022 정보과학회논문지 Vol.49 No.2
Traditional encryption cannot defend against coercive attackers who compel the user to hand over decryption keys as it cannot hide the existence of the ciphertext. To solve this problem, there have been studies on a deniable storage solution that applies plausible deniability, a characteristic that allows the user to deny the existence of sensitive data, to a storage device. The hidden volume mechanism is being used in various deniable storage solutions due to its relatively low-performance overhead compared to other mechanisms, and has recently evolved to defend against multiple-snapshot attacks. However, the existing hidden volume mechanism fundamentally requires a dummy random data pool to hide the ciphertext. Due to the existence of dummy random data stored in the storage device, the plausible deniability characteristic is exposed, which can reveal the intention to hide the data. This study proposes a flash chip-level access control command set that simultaneously supports data sanitization and plausible deniability, and using this, we propose a hidden volume-based deniable storage solution that supports plausible deniability characteristics without dummy random data.