http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
건선 피부병소에서 표피세포의 증식 및 분화 - 건선 표피에서 DNA 합성세포 및 분화 표식자 발현의 검색 -
조광현(Kwang Hyun Cho),장승호(Seung Ho Chang),김영걸(Young Gull Kim),윤재일(Jai Il Youn),박상철(Sang Chul Park),함의근(Eui Keun Ham) 대한피부과학회 1992 대한피부과학회지 Vol.30 No.3
DNA replicating cells were detected in the psoriatic epidermis by anti BrdU antibody after incubating tissue sections biopsied in acute and chronic areas with BrdU. The expression pattern of No. 1 keratin, involucrin. filaggrin, loricrin and transglutaminase E was studied in the paraffin embedded sections of psoriatic specimen which showed various histopathological findings. The results are as follows 1) The labeling index of BrdU in lesional psoriatic skin was significantly greater than that in normal skin. The labeling index was greater in the clinically active lesion of psoriasis than that of the chronic lesion, which suggest that psoriatic lesions are composed of distinct lesions differing in activity. 2) In the epidermis of the psoriatic plaques with extensive parakeratosis or microabscesses at the base of the stratum corneum and absent granular layers, the expression pattern of five epidermal proteins appeared as follows : No. 1 keratin which is found in normal epidermis immediately above the basal layer, appeared several layers higher. Involucrin was detected in most of the suprabasal layers. Fillaggrin, loricrin and transglutaminase E showed negative expression. The results obtained in the present study suggest that the increment of DNA replicating cells and aberrant, maturation pathway of epidermis appear in active psoriatic plaques. (Kor J Dermatol 1992; 30(3): 291-302)
U-City 건설을 위한 무선랜 기반 무선망과 WiBro 기반 무선망의 경제성 분석
조광현(Kwang-hyun Cho),김동호(Dong Ho Kim),이정륜(Jong-ryun Lee),김동민(Dong-min Kim),최순영(Soon-young Choi) 한국통신학회 2011 韓國通信學會論文誌 Vol.34 No.9
본 논문은 U-City (Ubiquitous City)의 무선망을 구축하는데 있어 WLAN 기반의 무선망과 WiBro 기반의 무선망을 고려하고 각 방식을 통해 구축할 경우 소요되는 비용과 얻을 수 있는 편익을 분석하여 경제적 효율성이 높은 무선망 방식을 선정하는 방법론을 제시하였다. 비용 분석을 위한 기초 데이터 획득을 위해 셀 설계 및 커버리지 분석을 수행하였으며, WiFi와 WiBro의 기술적 특징을 바탕으로 편익 분석을 수행하였다. 비용-편익 분석 결과 WiBro 무선망의 손익분기점이 WiFi 무선망에 비해 1.75년 빨리 도달하며, NPV(Net Present Value)도 114억원 가량 큰 것으로 나타나 경제적으로 효율적인 무선망 방식으로 분석되었다. In this paper, we made cost & benefit analyses of both WLAN-based and WiBro-based wireless networks for U-City(Ubiquitous City). We obtained basic data for cost analysis such as the number of network equipments through cell design and cell-coverage analysis. Also we made benefit analysis considering technical features of WLAN and WiBro networks. By cost & benefit analysis, we have reached conclusions that WiBro-based wireless network has earlier BEP(Break-Even Point) and larger NPV(Net Present Value) than WLAN-based network, and that WiBro is more efficient wireless network for U-City.
약물에 의한 홍역상 발진 및 다형 홍반의 병리조직학적 고찰
조광현(Kwang Hyun Cho),신기식(Ki Shik Shin) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.4
A histopathological observation of drug-induced morbilliform eruption and erythema multiforme was made on 32 patients with drug eruption, We found that many histopathologic features of drug-induced morbilliform eruption of basal cell layer with infiltration of derrnoepidermal junction and necrosis of epidermal keratinocyte were similar to those of drug induced erythema multiforme. Therefore, it seems possible to regard the histopathologic features of druginduced morbilliform eruption and erythema multiforrne as a cornmon tissuc reaction with spectral expression.
Chair`s Lecture : EBV associated hydroa vacciniforme-like eruption
조광현 ( Kwang Hyun Cho ) 대한피부과학회 2014 대한피부과학회 학술발표대회집 Vol.66 No.2
Hydroa vacciniforme (HV) is a rare self-limiting disease developing in childhood. It is characterized by vesicles and crust formation on the skin after sun exposure. Recently, cases with HV-like eruptions and severe systemic symptoms have been described in Asia and Latin America. It had been regarded as a different entity from typical HV. But latent Epstein-Barr virus (EBV) infection have also been detected in the patients with typical HV and the possibility has been suggested that typical HV and atypical HV are variants with the same disease spectrum of EBV-associated lymphoproliferative disorders, which ranges from typical HV as a benign pole to severe HV progressing to hematologic malignancy as a malignant pole. Chronic active Epstein-Barr virus infection (CAEBV) is an atypical illness associated with serologic evidence of persistent EBV infection. The extremely high levels of EBVmeasured in affected tissue or peripheral blood are the most recently proposed diagnostic criteria. I also found EBV associated HV-like eruption in the patients with CAEBV. During last 25 years, I have experienced more than 20 patients with EBV associated HV-like eruption. In this presentation, I will talk about various clinical features of the patients with EBV associated HV-like eruption that I have experienced.
조광현(Kwang Hyun Cho),조미경(Mi Kyung Cho),이유신(Yoo Shin Lee),함의근(Eu Keun Ham) 대한피부과학회 1989 대한피부과학회지 Vol.27 No.4
A total of 68 primary melanorna cases diagnosed at Seoul National University Hospital for the past 10 years from 1978 to 1987 were included for this clinico pathological study. Among the 31 primary cutaneous melanomss, 19 cases (61.3%) occurred on hands or feet, especially on the plantar surfaces. The average age of patients with acral melanomas was 49.3 years at the tirne of diagnosis and the male to female ratio of 19 cases was 3.8 to 1. The clinical and histopathologic findings showed that most ecral melanomas, if not all, were the acral lentiginous type. A high incidence of metastasis (73.7%) was recognized in acral melanomas.
통신방송 융합형 개인 맞춤형 방송 서비스를 지원하는 IPMG(IP Media Gateway) 구현
조광현(Kwang-hyun Cho),조력연(Yok-yon Cho),이종혁(Jong-hyuk Lee),김현철(Hyun-cheol Kim),안광용(Kwang-yong Ahn) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11
In order to activate the digital broadcasting in Korea, the analog broadcasting will have been closed down until 2012. Recently IPTV(Internet Protocol TV) thorough internet has been regarded as the fourth media following the terrestrial, satellite, and cable for the digital broad casting. And it has been the important medium for the communication and broadcasting system. However It is not easy to replace the entire broadcasting system with the digital - type broadcasting system. For the digital broadcasting, we should replace all TV sets, install the settop-boxes to receive the various IP media, solve problems about time delaying when changing channels, and support communication and broadcasting consolidation service for such as PVR and Network CCTV. IPMG is the digital converter that is able to solve these problems.