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선박 네비게이션 시스템의 효율성 보장을 위한 카메라 장착 중소형 VDR장치 및 데이터 제어방법 연구
민병국,하태진,김용수,박정민,차준섭,Min, Byung Guk,Ha, Tae Jin,Kim, Young Soo,Park, Jung Min,Cha, Jun Sub 한국스마트미디어학회 2013 스마트미디어저널 Vol.2 No.1
The paper presents VDR system for efficiency of ocean navigation device and how to output and to save data using this system as well as compressed digital data and analog video output from the camera are utilized at the same time. The compressed digital data is used to store video for VDR device while analog video is used to display on screen in real-time so that VDR system saves the load on SD memory card without navigation terminal and output it with real-time video. Also, the control method using VDR system are proposed for saving and outputting data. 본 논문은 선박 네비게이션 단말기의 효율성을 위한 VDR 시스템 및 이를 이용한 데이터 출력 저장 방법에 관한 것으로, 압축된 디지털 데이터와 아날로그 영상을 카메라로부터 함께 출력할 수 있도록 함으로써 압축된 디지털 데이터는 VDR 장치의 영상 저장에 이용하고 아날로그 영상은 실시간으로 화면 출력에 이용할 수 있도록 하여, 네비게이션 단말기에 부하를 주지 않고 영상을 실시간으로 모니터로 출력함과 함께 SD 메모리에 저장하게 하는 VDR 장치 및 이률 이용한 데이터 출력 저장 등의 제어방법을 제시하고자 한다.
민완기(Min Wan Ki),김남오(Kim Nam Oh),김병철(Kim Byung Chul),민병국(Min Byoung Guk),조금배(Cho Geum Bae),서길모(Seo Gil Mo) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
The six-pulse thyrister rectifier is one of the most widely used types of solid state converter. For electrolyzer system, the design procedure of tunned filters of AC 14.4㎸ power system are proposed by dynamic simulation. It is shown that these harmonic filters can meet most operational requirments. By careful specification of the transformer reactance, very low harmonic content and high power factor may be achieved at a specific operating point. The the proposed design procedure is verified with the simulation results.
박병철,김익동,김풍택,박일형,유영규,민병국 대한골절학회 1991 대한골절학회지 Vol.4 No.1
Cubitus varus deformity is the most common complication following supracondylar fracture of the humerus, Cubitus varus deformity causes no functional problem, moreover, most patient retains full range of motion at elbow joint. However, the deforlmity is often severe and the patient or his (her) parents wants surgical correction for the cosmetic reason. In children below 15 years old, the result is relatively good, because one can greensticking the osteotomy site with preservation of medial cortex that is important in maintaining stability. Minimal internal fixation using Kwire, Steinmann pin, screw and wire is adequate for stabilize the osteotomy. Also one can resuture the periosteum and bone healing is rapid in children. But in adult, complete osteotomy is inevitable in most cases, rigid internal fixation should be considered to stabilize the osteotomy and to allow early ROM exercise. We performed supracondylar osteotomy for cubitus varus deformity in adults with posterior approach and double plating technique in 4 patients from January 1989 February 1990. The results obtained were as follows; l. All 4 cases of cubitus varus deformity were complication of the supracondylay fracture of the humerus. 2. The correction technique used was lateral closing osteotomy in 3 cases and step-cut osteotomy in 1 case. 3. Surgical approach was posterior in 3 cases and lateral in 1 case. 4. The goal of operative treatment was cubitus rectus or slight valgus position. 5. Rigid internal fixation was done using double reconstruction plate in 3 cases and single reconstruction plate in 1 case. 6. The average preoperative carrying angle was -24 degrees ranging from -20 to-32 degrees. The average correction angle was 26.2 degrees. The average postoperative carrying angle was 2.2 degrees ranging from -4 to 7 degrees.(-: varus, +: valgus) 7. The operative complication was radial nerve palsy in 1 case, but totally recovered in 9 months follow-up.