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손계원(Gyewon Son),소준섭(Junseop So),고주은(Jooeun Ko),이진우(Jin-Woo Lee),이정록(JeongRok Lee),신원선(Won-Sun Shin) 한국디지털콘텐츠학회 2024 한국디지털콘텐츠학회논문지 Vol.25 No.2
Child speech recognition has emerged as a significant research topic in the fields of human-computer interaction and educational technology. Childrens utterances possess distinct characteristics from adults, often making it challenging for conventional automatic speech recognition (ASR) models to accurately recognize their speech. In this study, we utilized OpenAIs Whisper model to transcribe the voices of 4-7 year-old children into text. Specifically, considering the differences in speech between children and adults, we conducted data refinement and dataset construction to enhance the models performance. These efforts present an approach to enhance the performance of the Whisper model for child speech recognition from the perspective of training data. Our method improved the error rate of Korean child voice recognition by 84%.
이정한(Junghan Yi),이대행(Daehang Lee),김민철(Mincheol Kim),이순칠(Soonchil Lee),홍계원(Gyewon Hong),이호준(Hojoon Lee) 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.1
A precise magnetic field probe was designed to measure the field distribution inside a superconducting magnet. The operation principle of the developed equipment is based on cw-NMR. The range of field is from 2.8 T to 5.8 T, and the resolution is better than 0.3 ppm NMR samples were water and heavy water contained in a tube of 4 ㎜ diameter and 4㎜ height. This equipment can be manufactured very inexpensively compared with the currently available commertial ones.
대형 디젤엔진용 후처리시스템 구조에 따른 유동 특성 연구
조낙원(Nakwon Jo),문성준(Seongjoon Moon),이양로(Yangro Lee),안계원(Gyewon An) 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
Heavy-duty diesel engine should be mounted with a many string of DOC/DPF to reduce SOF and PM emission. And then, in order to minimize the engine power reduction and DPF recycling decline by mounting such devices, a new catalyst layout need to design that considering the back pressure and heat insulation. In this study, internal flow characteristics of the after-treatment devices by various DOC/DPF structures are computed using STAR-CCM+ v9.04 code. Through this, we propose a new catalyst layout that are numerically compared better pressure resistance and temperature loss of emissions. As a results, a new catalyst layout were predicted by calculating the back pressure more than 4.7% and heat insulation more than 2.06%.