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택시를 활용한 자동차용 램프 내구성 평가에 대한 신뢰성 및 효율성 분석
고민수(Minsu Ko),김경현(Kyounghyun Kim),김찬중(Chanjoong Kim),이승필(Seungpil Lee) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
Recently, the vehicle development period is shortened and the prototype stage is eliminated in order to reduce development costs, and the stage of vehicle development is applied by applying mass-production molds from the early stage of development. Accordingly, in product development, more emphasis is placed on analysis or simulation than on actual testing. As a result, unexpected problems occur at the point in time when consumers actually use them, and a lot of money is being spent to improve them. Also, in the field of warranty, it is necessary to predict the failure rate of the actual vehicle and calculate the warranty cost for it, but there is no actual durability test result, so it is difficult to predict this. Therefore, in this analysis, we intend to apply parts that do not affect safety to taxis and check how effective they are in predicting durability and reliability.
감정어휘 평가사전과 의미마디 연산을 이용한 영화평 등급화 시스템
고민수(Minsu Ko),신효필(Hyopil Shin) 한국인지과학회 2010 인지과학 Vol.21 No.4
본 논문은 한 문서의 전체 의미는 각 부분의미의 합성이라는 관점에서 미리 반자동으로 구축된 감정어휘 평가사전을 기반으로 한 시스템을 제안한다. 인간의 의사 결정 과정과 유사한 방식으로 의사 결정 과정을 모델링하려는 노력으로써 본 ARSSA 시스템은 개별 리뷰의 의미값 연산과 자료 분류를 통해 감정 표현이 나타난 영화평 리뷰의 자동 등급화에 대한 연구를 수행한다. 이는 {‘평점’ : ‘리뷰’} 이항구조로 이루어진 현재의 평점 부여 형식에서 발생하는 두 변항의 불연속성 문제를 해결해보려는 목적을 가진다. 이는 어휘 의미 합성 과정에서 반영된 추상적 의미들의 합성 함수를 통해 실현될 수 있다. 시스템의 성능 실험에서 네이버 무비에서 확보한 1000개의 리뷰에 대한 10-fold 교차 검증 실험이 수행되었다. 이 실험은 기존에 부여된 평점과 비교하여 감정어휘 평가사전을 이용하였을 때 85%의 F1 Score를 보였다. Assuming that the whole meaning of a document is a composition of the meanings of each part, this paper proposes to study the automatic grading of movie reviews which contain sentimental expressions. This will be accomplished by calculating the values of semantic segments and performing data classification for each review. The ARSSA(The Automatic Rating System for Sentiment analysis using an Appraisal dictionary) system is an effort to model decision making processes in a manner similar to that of the human mind. This aims to resolve the discontinuity between the numerical ranking and textual rationalization present in the binary structure of the current review rating system: {rate: review}. This model can be realized by performing analysis on the abstract menas extracted from each review. The performance of this system was experimentally calculated by performing a 10-fold Cross-Validation test of 1000 reviews obtained from the Naver Movie site. The system achieved an 85% F1 Score when compared to predefined values using a predefined appraisal dictionary.
자동차 램프류에 사용되는 흡습제에 대한 수명 예측방법 개발
김찬중(Chanjoong Kim),고민수(Minsu Ko),정재훈(Jaehoon Jeong),김경현(Kyunghyun Kim) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
The desiccant for automobile lamps, which is currently mainly used, is very different from the desiccant used in everyday life or in industrial and logistics sites. Therefore, the generally known desiccant lifetime method should not be used. Automobile lamps are affected not only by design but also by changes in light sources and external environment. Therefore, it is necessary to estimate the life of the desiccant by considering these factors. In this study, a method of predicting the life time according to temperature, humidity, light source, and structure for the desiccant applied to the headlamp was proposed, and also a method for predicting the desiccant life according to field claims was proposed and analyzed.
냉각장치를 이용한 헤드램프 습기 억제 시스템 개발을 위한 연구
김찬중(Chanjoong Kim),최경덕(Kyungduk Choi),고민수(Minsu Ko) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
While studies on the fogging in the headlamp so far have focused on fogging removal, this study suggests ways to suppress the generation of fogging. We have understood the mechanism of fogging to improve fogging performance in the headlamp system. and the relationship between the temperature of the headlamp housing and the fogging performance has been found by analyzing the thermal characteristics of vehicles. Finally, the method of controlling the fogging suppression using water was proposed in the humid conditions and the analysis was performed.