http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Won-Oh Jo(조원오) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
NFC 기반 2 Factor 모바일 전자결제를 위한 갤러리-옥션의 사용자인증 모듈 개발
조원오,차윤석,오수희,최명수,김형종,Jo, Won Oh,Cha, Yoon Seok,Oh, Soo Hee,Choi, Myeong Soo,Kim, Hyung Jong 한국스마트미디어학회 2017 스마트미디어저널 Vol.6 No.3
최근 NFC 기능이 탑재되어있는 스마트폰의 비중이 급속하게 많아지고 있으며, 이로 인해 NFC 관련 기술이 많은 기업들에 의해 만들어지고 있다. NFC기반 2 factor 전자결제시스템의 보안기능 향상과 새로운 서비스를 위해 갤러리-옥션을 개발하였다. XenServer를 이용해 효율적으로 서버를 관리 할 수 있도록 하였으며, 향상된 보안기능은 FIDO 인증기술을 적용하기 위해 지문인식을 통한 사용자 인증 모듈의 개발 및 TTS를 이용한 갤러리-옥션의 전자계약 음성서비스를 개발하였으며, 실제 적용을 통해 테스트 한 결과, NFC 모바일 전자결제를 통한 사용자의 편리하고 간단한 인증방식과 보안성을 강화하였다. Lately weight for smartphone mounted to function for NFC is increasing, rapidly. Because of this, NFC related technology is made by many companies. We developed Gallery-Auction for security enhancements and new services of NFC-based 2 factor electronic payment system. Enhanced security features development of user authentication module through fingerprint recognition to apply FIDO authentication technology and developed electronic contract voice service of Gallery-Auction using TTS(Text to Speech). Therefore we enhanced convenient and simple authentication method and security through NFC mobile electronic payment.
-
Anti-wear performance and life evaluation of wheel bearing type greases
Jung-Young Kim(김중영),Keun-Wo Chung(정근우),Young-Wun Kim(김영운),Won-Oh Jo(조원오) 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.39 No.-
Li-complex and urea type greases (each 10 species) which were furnished by Chang-Am LS. analyzed anti-wear performance into fretting wear tester & four-ball wear tester. From the results of fretting wear test. the wear volume of Li-complex greases are 4.6~8.9㎎ and 8.3-14.4㎎ with the test of urea greases. The anti-wear performance for 4-ball wear test of greases produced results around 0.5㎜ at the value of WSD. The grease life performance were evaluated by SKF-ROF Grease Tester and wheel bearing life tester. From the results of SKF-ROF tester. the life performance evaluated by whole working time produced results 50~300hr with the Li-complex greases and 100-1000hr with the urea greases. That is to say. in spite of severe condition at the higher of 10℃ reaction temp. the life performance with Urea type greases are much superior to Li-complex type greases. Prior to wheel bearing life tester. the grease selected performance evaluation(=anti-wear test) are tested by wheel bearing tester. In this results. we can confirm results those are similar with SKF-ROF tester. In this study. we can draw two major conclusions. one is that Li-complex greases are superior to urea greases with anti-wear properties and the other is that urea greases are much superior to Li-complex greases with life performance
ScienceON
스콜라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
