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지능형 자동차용 FOT 데이터베이스에 기반한 한국과 미국 운전자의 주행특성 고찰
정창현(Changhyun Jeong),이영석(Youngseok Lee),최성진(Sungjin Choi),정도현(Dohyun Jung),이강원(Kangwon Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Recently, automobile has been developed as a fusion technology product with many electronic parts and telematics equipments and many ECUs. Automobiles are becoming more intelligent and safe vehicles, assemblies of advanced technology by customers’ demand. A study on the natural driving pattern and driver"s response in various traffic and road condition is essential to develop the driver friendly intelligent vehicle. We introduced the field operational test (FOT) database, which could be used as driving and road conditions collection for researches about driver friendly intelligent system, Human Vehicle Interface(HVI) system and economic driver model and so on, which has been built by Korea Automotive Technology Institute(KATECH) from 2 years ago. Also, we compared Korean and American driving characteristics based on FOT database. American driving data came from UMTRI(University of Michigan Transportation Research Institute) RDCW(road departure crash warning system) FOT database. We showed macroscopic observation results about driving tendency of both database in this paper and we will present detail analysis results in the close future.
CdS/ZnS 양자점 기반 플라스틱 섬광체 제작 및 성능평가
민수정 ( Su Jung Min ),강하라 ( Ha Ra Kang ),이병채 ( Byung Chae Lee ),서범경 ( Bum Kyung Seo ),정재학 ( Jae Hak Cheong ),노창현 ( Changhyun Roh ),홍상범 ( Sang Bum Hong ) 한국화학공학회 2021 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.59 No.3
Currently, gamma nuclide analysis is mainly used using inorganic scintillators or semiconductor detectors. These detectors have high resolution but there are less economical, limited in size, and low process ability than plastic scintillators. Therefore, quantum dot-based plastic scintillator was developed using the advantages of the quantum dot nanomaterial and the conventional plastic scintillator. In this study, efficient plastic scintillator was fabricated by adding CdS/ZnS based on the most widely used Cd-based nanomaterial in a polystyrene matrix. In addition, the performance of the commercial plastic scintillator was compared and it was analyzed through radiological measurement experiments. The detection efficiency of fabricated plastic scintillator was higher than commercial plastic scintillator, EJ-200. It is believed that this fabricated plastic scintillator can be used as a radioactivity analyzer in the medical and nuclear facility fields.