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인증 기능이 강화된 온라인 전자 화폐 모형과 시뮬레이션
이성렬(Sung-Yeol Lee),주재훈(Jae-Hun Joo) 한국정보과학회 1998 한국정보과학회 학술발표논문집 Vol.25 No.2Ⅲ
본 연구에서는 인터넷 기반의 전자 상거래에서 극소액 지불을 지원하고, 원격지에서의 계정 개설과 관리 등을 용이하게 할 수 있도록 지불인과 수취인을 쉽게 인증할 수 있는 인증 기능이 강화된 전자 현금 모형의 지불 프로토콜을 개발하고, 프로토타입을 통해 그 효과성을 실험하였다. 또한 본 연구에서 개발하고자 하는 온라인 전자 현금인 OnCash 에서는 기존의 전자 현금인 Ecash 나 NetCash 와 마찬가지로 공개키 암호방식과 비밀키 암호방식을 이용하여 메시지 기밀성을 유지하고 전자 화폐의 이중사용을 방지하고, 적정한 수준의 익명성을 유지할 수 있도록 하였다.
이성렬(Sung Yeol Lee),계영철(Young Chul Kye),신용우(Young Woo Cinn) 대한피부과학회 1988 대한피부과학회지 Vol.26 No.5
We report herein a case of impetigo hepetiformis treated with etretinate. The patient was 30 year old female in the 7th month of her second pregnancy, who had suffered from generalized coalesced pustular eruption with slightly itching and hurning sensation with fever on whole body except face, both had and foot. The euption began as an erythemations patch which developed pustules along the mar gin. I'here was extensian by the develupment of fresh peripheral pustules and coaleence of these patches. Histopathological findings showed hyperkeratosis, subcorneal spongiform pustule, spon,iosis in the epidermis and vascular proliferation in the devmis, She was treated successfully with etretinate for 4 weeks.
이성렬(Lee Sung-Yeol),김경민(Kim Kyung Min),윤태호(Yoon Tae-Ho) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
The main purpose of this study is to evaluate the seismic capacity of existing RC school structures constructed in the 1980s using the Korean and Japan's codes. And seismic capacity of existing RC school structures using Korean and Japan's codes are compared. As the results, the first and second story of school building are appeared to be destroyed, and the destructive ratio of l st floor is maximum 65% higher than that of 2nd floor. Also, the destructive ratio of side part in school buliding is maximum 32% higher than that of center part. Therefore, it is desirable that the side part of lower story in school building is seismically reinforced.
노주영(Joo Young Roh),이성렬(Sung Yeol Lee),계영철(Young Chul Kye),신용우(Yong Woo Cinn),김수남(Soo Nam Kim) 대한피부과학회 1988 대한피부과학회지 Vol.26 No.3
The dysplasitc melanocytic nevus(DMN) of the skin is an atypical-appearing melanocytic tumor characterized by intraepidermal atypical melanocytic preliferation. Clinically, DMN has a diameter greater than 5mm, ill-defined irregular borders, irregularly distributed pigmentation surrounded by erythems,. Histopat- hologically, there are numerous discrete nests of atypical melanocytes situated at the dermoepidermal junction of elongated rete ridges. In the dermis, concentric lamellar fibroplasia, lymphocytic infiltrates and neovascularization are noted. We report herein a case of DMN developed on the trunk of 31-year-old Korean male.