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VLSI 설계자동화 시스템을 위한 순서회로의 최적상태코드 할당 알고리듬
임재윤,임인칠,Lim, Jae-Yun,Lim, In-Chil 대한전자공학회 1989 전자공학회논문지 Vol. No.
순서회로를 PLA로 실현하기 위한 설계자동화 방법에 대해 논했으며, PLA로 회로 실현시 면적최소화를 위한 최적 상태코드할당 알고리듬을 제안하였다. 회로기술이 용이하고 합성력이 강한 하드웨어 기술언어인 DASL9design automation support language)을 이용하여 회로를 기술한 후 이를 컴파일하여 그 결과를 PLA롸 자동설계하는 시스템을 제안한다. 순서회로의 각 상태에 대한 코드할당시 출력 및 다음상태를 동시에 고려하여 코드할당을 수행함으로서 종래의 할당법에 비해 평균 10%의 PLA 면적을 감ㅂ소 시킬 수 있었다. 본 시스템은 마이크로 인스트럭션, FSM, VLSI의 제어부설계등에 확장 적용할 수 있게 구성하였다. A design automation method for sequential circuits implementation by mans of PLA is discussed, and an optimal state-code assignment algorithm to minimize the PLA area is proposed. In order to design sequential circuit automatically, DASL (Design Automation Support Language) [8] which is easy to describe and powerful to synthesize, is proposed and used to describe sequential circuit, An optimal statecode assignment algorithm which considers next states and outputs simultaneously is proposed, and by adopting this algorithm to various examples, the area of PLA is reduced by 10% comparing privious methods. This system is constructed to design microinstruction, FSM, VLSI control part synthesis.
면역억제환자에서 발생한 범발성 편평사마귀를 경구 아시트레틴과 국소 5% Imiquimod Cream 병합요법으로 효과적으로 치료한 1예
임재윤 ( Jae-yun Lim ),김한샘 ( Han-saem Kim ),김정인 ( Jung-in Kim ),민준홍 ( Joon Hong Min ),최영준 ( Young Jun Choi ),남재희 ( Jae Hui Nam ),채승완 ( Seoung Wan Chae ),이가영 ( Ga-young Lee ),김원석 ( Won-serk Kim ) 대한피부과학회 2017 대한피부과학회지 Vol.55 No.9
Verruca plana is a subtype of warts, which are one of the most common dermatological diseases. A 37-year-old man presented with multiple asymptomatic skin-colored, 1∼2-mm, flat-topped papules on both arms, neck, and face. The patient had ulcerative colitis, which had been treated with immunosuppressants for 15 years. After skin biopsy, verruca plana was confirmed. The patient was treated with 5% imiquimod cream for 6 months. However, only mild improvement was observed. Acitretin was then added to the treatment regimen. After 44 weeks of treatment, acitretin was stopped. Dramatic and rapid clinical improvement was achieved after 3 weeks of treatment, and no sign of recurrence after treatment cessation has been reported for 60 weeks. Consequently, the combination of oral acitretin and topical 5% imiquimod cream should be recommended for the effective and safe treatment of recalcitrant verruca plana in immunosuppressed patients. (Korean J Dermatol 2017;55(9):597∼601)
임재윤(Jae-Yoon Lim),윤승환(eun g-Hwan Yun),임선희(Sun-Hee Lim),이옥연(Ok-Yeon Yi),임종인(Jong-In Lim) 한국정보과학회 2007 한국정보과학회 학술발표논문집 Vol.34 No.2D
정보 통신기술의 발전으로 단말기와 네트워크에 독립적인 부가서비스를 이용할 수 있는 개방형 가입자 인증 카드인 USIM(Universal Subscriber Identification Module) 카드가 이용되고 있다. 모바일 정보기기의 성능 향상으로 다양한 기능이 추가되고 USIM에 저장된 개인정보의 중요성이 부각되어 범죄 도구로 이용될 가능성이 높아 졌으며, 법정 증거자료로서의 중요성도 증가되었다. 모바일 포렌식은 기존의 데이터 저장장치와는 다른 파일시스템을 가지고 있기 때문에 거기에 맞는 전용 포렌식 툴들이 필요하며, USIM과 관련된 범죄가 일어날 때, 자료의 복구와 빠른 검사를 통해 법적 증거화 시킬 수 있는 USIM 포렌식 툴을 요구한다. 본 논문에서는 USIM의 기본적인 구조와 파일시스템을 분석하고 USIM 포렌식 관점에서 증거화 시킬 수 있는 다양한 유형과 절차들을 알아보고, 현재 사용 중인 USIM 포렌식 툴들에 대해 비교 분석한다.
대학병원 피부과 외래에 내원한 안드로겐 및 원형탈모증 환자에서의 대표적 Trichoscopic Finding에 대한 고찰
임재윤 ( Jae Yun Lim ),민준홍 ( Joon Hong Min ),최영준 ( Young-jun Choi ),남재희 ( Jae Hui Nam ),이가영 ( Ga-young Lee ),김원석 ( Won-serk Kim ),정호주 ( Ho Joo Jung ) 대한피부과학회 2016 大韓皮膚科學會誌 Vol.54 No.9
Background: By magnifying the scalp and structure of hair, trichoscopy enables easy differentiation among various hair loss diseases. Objective: To measure the frequency of representative trichoscopic findings in outpatients with androgenetic alopecia and alopecia areata and the frequency of various trichoscopic findings depending on the disease severity of androgenetic alopecia. Methods: This cross-sectional study included 87 patients with androgenetic alopecia (n=57) and alopecia areata (n=30) treated over a year (2014∼2015). Three dermatologists assessed the trichoscopic findings (hair shaft, hair follicle opening, and perifollicular epidermis) in these patients. Results: Vellus hair was observed in 21 of the 30 patients (70%) with alopecia areata and 20 of the 57 patients (35%) with androgenetic alopecia. Among the patients with androgenetic alopecia, as the disease severity increased, the portion of patients with vellus hair, thickness heterogeneity, and honeycomb pigmentation also increased (p<0.05). Conclusion: Trichoscopy is very useful for the diagnosis of androgenetic alopecia and alopecia areata. Additionally, the severity of androgenetic alopecia can be assessed using trichoscopy. (Korean J Dermatol 2016;54(9):699∼705)
SPKI/SDSI를 적용한 분산도메인간의 효율적인 인증 및 접근제어 모델 연구
임재윤(Jae-Yoon Lim),윤승환(Seunghwan Yun),임선희(Sun-Hee Lim),이옥연(Okyeon Yi),이상진(Sangjin Lee) 한국정보기술학회 2010 한국정보기술학회논문지 Vol.8 No.10
SPKI/SDSI(Simple PKI/Simple Distributed Security Infrastructure) is improved security technologies of complicated characteristic of Hierarchical Architecture and weakness of access control. It is suitable that the technologies of SPKI/SDSI have characteristic of Horizontal structure for the closed circumstances. This paper will analysis complexity of using certificate between PKC and AC when the users of typical X.509 PKI structure move to another CA domain. To solve this problem, it will explain ways of authorizing user's certificate and authority faster when the user moves to another domain, it is easier to use the functions of SPKI/SDSI, Name Certificate and Authorization Certificate. Moreover, it will propose much more safer and effective Name Certificate issuance and Authorization Certificate's application by applying the managements of SPKI/SDSI's certificate based on the USIM cards.
이윤호 ( Yun Ho Lee ),임재윤 ( Jae Yun Lim ),이현주 ( Heun Joo Lee ),최영준 ( Young-jun Choi ),이가영 ( Ga-young Lee ),김원석 ( Won-serk Kim ) 대한피부과학회 2020 大韓皮膚科學會誌 Vol.58 No.3
Background: Patients with undifferentiated masses on the finger are frequently encountered in the clinic. However, dermatology literature is scarce regarding these tumors. Objective: To investigate the clinical characteristics of digital benign tumors. Methods: We retrospectively reviewed clinical photographs and medical records of 139 patients who visited Kangbuk Samsung Hospital for digital tumors confirmed by skin biopsy between January 2013 and August 2019. Results: The mean patient age was 47.6 years and the male-to-female ratio was 1:1.27. The most common digital tumor was mucous cysts, accounting for 32.37% of the total number, followed by pyogenic granuloma (29.49%) and Masson’s hemangioma (7.19%). The most common digital tumors on the volar and dorsal surfaces were pyogenic granuloma (54.09%) and mucous cyst (55.12%), respectively. Conclusion: Our study demonstrates that various digital tumors can occur. Further studies with larger patient groups are needed to better understand the incidence or site predilection of digital tumors. (Korean J Dermatol 2020;58(3): 162∼167)