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손종인,이학용,손현승,서태일,윤길상 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
Micro end-milling has been becoming an important machining process to manufacture a number of small products such as micro-devices, bio-chips, micro-patterns and so on. Despite the importance of micro end-milling, many related researches have given grand efforts to micro end-milling phenomenon, for example, micro end-milling mechanism, cutting force modeling and machinability. This paper strongly concerned actual problem, micro tool deflection, which causes excessive machining errors on the workpiece. To research this problem, we measured cutting forces in micro end-milling processes. And then we measured about cutting profile for that processes. At last we make a comparison between tool deflection due to cutting force and measurement of cutting profile.
이은영,장태원,정만홍,옥철호,이규원,손창배,이지숙,신은경,서정아,백종현,김영옥 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2
Actinomycosis is a chronic suppurative infection, whitch infiltrates mucosa-associated tissues. Thoracic, pelvic and cervicofacial infections of actinomyces are not uncommon, but endobronchial actinomycosis is rarely reported. We report a case of a 29 year old man who presented with a recurrent pneumonia and chronic cough. Fiberoptic bronchoscopy revealed occlusion of the right. lower medio-basal segment bronchus with exophytic endobronchial mass. The diagnosis was confirmed histologically by demonstration of sulfur granules in the bronchoscopic biopsy of the mass. Intravenous administration of amoxacillin and clindamycin followed by oral amoxacillin and clindamycin therapy resulted in complete recovery.
[PD-0022] Identification of GM soybean using visible near infrared spectroscopy
Seo-Yoon Oh(Seo-Yoon Oh),Younsung Cho(Younsung Cho),Tae-hun Ryu(Tae-hun Ryu),Tae-sung Park(Tae-sung Park),Soo-in Sohn(Soo-in Sohn),Hyong-mi Mun(Hyong-mi Mun),Eun-kyung Shin(Eun-kyung Shin) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
손태식(Tae-Shik Sohn),서정우(Jung-Woo Seo),서정택(Jung-Taek Seo),문종섭(Jong-Sub Moon) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅰ
은닉채널에 관한 연구는 1980년대 이전부터 진행되어 왔으며, 최근에는 멀티미디어 데이터에 대한 스테가노그래피에 대한 관심이 집중되고 있다. 하지만, 본 논문에서는 현재 스테가노그래피나 정보은닉에서 다루는 동영상 데이터에 대한 은닉채널이 아니, 인터넷 환경의 근간을 이루는 TCP/IP 네트워크 트래픽에 존재하는 은닉채널에 대한 연구를 수행하였다. 먼저 은닉채널 개념 및 기존 연구동향을 분석하였으며, 그 후 TCP/IP를 구성하는 각 프로토콜에 생성 가능한 은닉채널을 분석하여 향후 연구 방향을 제시하였다.
The Performance Evaluation of NSSS Control Systems for UCN 4
Sohn, Suk-Whun,Song, In-Ho,Sohn, Jong-Joo,Park, Jong-Ho,Seo, Jong-Tae Korean Nuclear Society 2001 Nuclear Engineering and Technology Vol.33 No.3
NSSS Control Systems automatically mitigate transient conditions and leads to a stable plant condition without operator actions when a transient occurs during normal power operation. In this paper, the function and performance of NSSS control systems were examined and evaluated by comparing the predicted results with the measured data for the selected events. Loss of a Main Feedwater Pump and Load Rejection to House Load Operation events were selected for the evaluation among the transient tests peformed during the Power Ascension Test (PAT) of UCN unit 4. The overall schematic control actions of NSSS control systems can be evaluated easily through the observation of these two typical events. The selected events were analyzed by the KISPAC computer code[l] which had been used in developing the control logic and determining the control setpoints during the plant design. Additionally, the performance of FWCS during low power operation was evaluated. The result of evaluation showed that the NSSS control systems were designed properly and the performance of the NSSS control systems was excellent and also the computer code had a good prediction capability.