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소형 Gun Drill Machine 개발에 관한 연구
오진수,박광훈,남궁재관,우창기,강동명 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-
This compact Gun Drilling Machine was developed to improve productivity and economical efficiency for small and midium enterprise tool makers. To produce specialize tools that gun drilling works should be required prior to making deep holes. Gun drill machines are so expensive and big burden for small tool makers so that works used to execute through outside orders but it was required lot of cost too. Most of gun drill machines are providing for high volume and large capacity enterprises. In order to support for small and medium enterprise purpose that compact gun drill machine was designed and developed. It could be improved products quality, productivity and saving manufacturing cost using this machine.
정명아,서유승,양진수,박준섭,윤진훈,이중건,이준승,이영규,김동희,조성범,주종은 대한신장학회 2002 Kidney Research and Clinical Practice Vol.21 No.2
Pelvic actinomycosis is a chronic granulomatous suppurative disease caused by an anaerobic grampositive organism Actinomyces israelii. It is com-monly associated with an intrauterine device(IUD) and can mimick pelvic or intra-abdominal malignant neoplasm. Ureteral obstruction leading to hydronephrosis is a rare complication of tubo-ovarian abscess. We experienced a case of hydronephrosis as a complication of pelvic actinomycotic abscess. The patient was a 46-year-old women presenting with fever and right flank pain. Leukocytosis and pyuria were present and a hydronephrosis was diagnosed by intravenous pyelography. Ultrasonography and a computerised tomography revealed a mass in right adnexum compressing the right ureter. Removal of retroperitoneal abscess and salphingo-oophorectomy were done and the diagnosis of actinomycosis was made by pathologic finding of resected mass. Postoperatively, the patient was treated with second-generation cephalosporin successfully. (Korean J Nephrol 2002;21(2):337-340)
정영진,박원희,안원준,이명렬,이영수,유광희,심광섭 한양대학교 의과대학 1997 한양의대 학술지 Vol.17 No.2
Transmandibular implants are used limitedly such as on remaining symphyseal basal bone of atrophic mandible, on the bony defect of symphyseal area due to trauma or tumor as surgical implants. Among the more recent advances in oral implantology are the Fixed Mandibular Implant (FMI)based on the pioneering studies and clinical applications by Irwin Small of the USA and the development very high success rates for providing attachments and abutments in areas of the oral cavity severely compromised by either atrophy or surgical loss of osseous tissues. We will present a case report of regabilitation of totally edentulous mandible with advanced alveolar atrophy using Fixed Mandibular implant (F.M.I).
홍주현,진계환,박경순,조명찬,박길선,차은종,이태수 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2
연구목적: 초소형 정밀 기계 기술로 제작된 2차원 가속도 센서와 916 MH2 단거리 고주파 데이터 통신 기술을 응용하여 인체의 운동상태를 자동으로 감지하고 분류하는 기법을 제안 하고자 하였다. 재료 및 방법: 인체의 신호를 획득하기 위하여 미국 버클리대에서 제작한 무선 센서를 등 산용 조끼의 전면상단에 부착해서, 대상자의 흉골 부위에 위치하도록 하고, 앉은 상태에서 일어서거나 눕거나 하는 동작 및 그 역동작이 일어날 때, 가속도 센서에서 감지되는 4가지 종류의 파형 현화에 해당되는 데이터를 무선센서 네트웍을 통해 획득하였다. 결과: 획득한 신호를 주성분분석(Principal Component Analysis)과 지원벡터머신(Support Vector Machine)을 사용하여, 2차주성분까지를 도표화하고 클러스터링 함으로써, 4개의 영역으로 분할하는 것이 가능함을 말 수 있었다 결론: 소형 센서들이 작동되는 임베디드 컴퓨팅 환경에서 일상생활 중에 발생하는 인체의 4가지 동작을 자동으로 감지하고 분류하는 것이 가능함을 보였다. Purpose: New monitoring and classifying method of human motion contort was pro- posed by using 2-axial MEMS accelerometer and 916 MHz short-range data communica-tion technology. Materials and Methods: The wireless sensor of MICA mote was attached to a woman mountain vest and located close to the subject's sternum. During four types of sub-ject's motion, that is, sit-to-stand, stand-to-sit, sit-to-tying, and tying-to-sit, waveform changes of the accelerometer data were acquired by wireless sensor network. Results: The acquired signal was analyzed by Principal Component Analysis(PCA) and Support Vector Machine(SVM) technique. By clustering the first and second principal components, four regions corresponding to the four types of motion, were clearly segment-ed. Conclusion: Human motion context during daily life could be monitored and classified automatically by using small sensors in embedded computing environment
공무원 사이버 교육효과에 미치는 영향요인 탐색연구 : 지방공무원을 중심으로 Focusing on Local officials
김하균,박명주,장창진 한국정보시스템학회 2004 情報시스템硏究 Vol.13 No.1
Along with the advance of information technology and the introduction of the information era, cyber education through the internet has been activated in universities and private educational organization. However, most cyber education is not being practically applied in government employ. This study looks at the influential factors of cyber education in order to create a cyberspace where the public official can obtain information at a place and time convenient to them. This will provide a chance to activate cyber education effectively. The hypothesis was approved through multiple regression analysis was executed in order to explain and predict the relationship between influential factors and cyber education effects. The results of the study show the influential factors of education effect as follows: the instruction design and contents factors such as interesting educational contents, interaction between learners and teacher, and positive instruction, all had an important influence. the learner factors, such as a desire to learn, motivation, and interest in the lesson, also had a significant influence. the environmental factors such as systematical basis and support, atmosphere, and consideration of others had a large effect on the education effect.
李淳赫,孟昇辰,朴明根 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.10 No.2
This study was conducted to get best fitting frequency distribution for the annual runoff and to simulate long aeries of annual flows by single-season first order Markov Model with comparison of statistical parameters which were derived from observed and synthetic flows at three watersheds in the Yeong San river basin. The results summarized through this study are as follows. 1.Hydrologic persistence for three watersheds were acknowledged by the correlogram analysis. 2.Normal distribution of the annual runoff for the applied watersheds was confirmed as the best by Kolmogorov-Smirnov test. 3.Statistical parameters were calculated from synthetic flows simulated by normal distribution. It was confirmed that those are very similar to statistical parameters of observed data. 4.Hydrologic persistence between observed flows and synthetic flows simulated was confirmed by the correlogram analysis. 5.It is to be desired that generation technique of synthetic flow in this study would be compared with other simulation techniques for the objective time series.