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송경민(Kyung-Min Song),이칠우(Chil-Woo Lee) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅱ
본 논문에서는 실세계에서의 사용자 동작을 가상 공간의 캐릭터를 통해 나타낼 수 있는 제어 방법에 대해 논한다. 사용자의 캐릭터는 스테레오 카메라 영상으로부터 얻어지는 3차원 좌표값 5개올 이용하여 표현된다. 영상에서 구하는 3차원 좌표값은 노이즈가 들어있고 불안정하므로 자연스럽고 부드럽게 변형할 수 있도록 프레임 내에서 보간 작업이 필요하다. 안정된 데이터는 신체 제약조건을 만족하는 범위에서 inverse kinematic을 이용하여 joint angle을 계산한다. 하지만 이 방법은 수학적인 계산을 통해 나온 결과이기 때문에 가끔 사용자가 원하지 않는 동작을 만들어 내는 단점을 극복해야 한다.
송경민(Kyung Min Song),김종필(Jong Pil Kim),최길웅(Kil Ung Choi),민수기(Su Gee Min),황성욱(Sung Ook Hwang),고승권(Seung Kwon Koh),조숙(Suk Cho),이우영(Woo Young Lee) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.5
Tuberculosis of the uterine cervix is a rare disorder and the cervix is reported to be involved in 5-15 percent of the case of genital tuberculosis. It is discovered incidentally in most cases. The genital lesions are secondary to tuberculosis elsewhere, usually, the lungs. Primary cervical tuberculosis is very rare. The cytologic diagnosis of cervical tuberculosis is difficult. The histological diagnosis of genital tuberculosis presents no problems when the typical caseating necrosis and Langhans giant cell granulomas are present in tissue. And the presence of tubercle bacilli in biopsy specimens as well as in cultures of one specimen confirmed the diagnosis. We report a case of tuberculosis of the cervix confirmed by histologic examination with brief review.
송경민 ( Kyung Min Song ),장은영 ( Eun Young Jang ),김희영 ( Hee Young Kim ),양재하 ( Chae Ha Yang ) 대구한의대학교 제한동의학술원 2017 東西醫學 Vol.42 No.2
Objective : Acupuncture has been used a useful tool for treatment of mental diseases including drug addiction. However, the effects of acupuncture on the cognitive functions are not clear. In the present study, we reviewed the role of acupuncture on the cognitive functions. Methods : We searched research and review articles with ‘acupuncture, cognitive functions or cognitive impairment’ key word in Pubmed and RISS sites. Results and conclusion : Cognitive impairments are produced in many of diseases such as Parkinson’s disease and Alzheimer’s disease. In addition, prefrontal cortex or lateral habenula region in the brain is involved in cognitive functions. Acupuncture showed the therapeutic effect on cognitive functions in some diseases. Taken together, acupuncture can ameliorate cognitive impairments possibly through regulation of prefrontal cortex or later habenula region of brain.
송경민(Kyoung-Min Song),이기웅(Ki-Woong Lee),이창현(Chang-Hyun Lee),이우경(Woo-Kyung Lee),이명진(Myeong-Jin Lee) 한국전자파학회 2016 한국전자파학회논문지 Vol.27 No.3
무인항공기는 전투뿐만 아니라, 정찰, 관측 탐사 등 여러 분야에서 이용할 수 있고, 전천후 영상 수집이 가능한 SAR(Synthetic Aperture Radar) 기술과 함께 기존의 감시정찰 체계가 수행할 수 없던 임무영역까지로 그 능력이 확장될 것으로 보인다. 오늘날, 고효율 집적기술의 발전과 시스템 경량화 기술의 발전에 힘입어 무인항공기에도 경량의 SAR Sensor를 탑재하려는 연구와 수요가 증가하고 있다. 이에 따라, 본 논문에서는 SAR 시스템을 구성하는 핵심 모듈인 광대역 첩신호발생기를 DDS 디지털 소자 기반으로 개발하여 무인항공기용 신호 발생기와 송수신장비의 개발과정 및 결과를 기술하였다. UAVs(Unmanned Aerial Vehicle) can be used in variant fields fornot only combat, but also recon, observation and exploration. Moreover, UAVs capacity can be expanded to impossible missions for existing surveillance system such as SAR(Synthetic Aperture Radar) technology that collecting images from all weather conditions. In recent days, with development of highly efficient IC and lightened system technology, there are significant increase of researches and demands to make SAR sensor as a payload of UAV. Therefore, this paper contains development process and results of small signal generator and RF device as a core module of SAR system based on the digital device of DDS.
소형 무인기 SAR 탑재체 개발을 위한 FPGA 기반의 DRFM 신호 처리 장치 설계
송경민(Kyoung-min Song),이우경(Woo-kyung Lee),이명진(Myeong-jin Lee) 대한전자공학회 2017 대한전자공학회 학술대회 Vol.2017 No.6
This paper describes the design and development of FPGA variable based DRFM signal processor for small UAV SAR. The desired bandwidth of the signal is 100 MHz DRFM with I and Q combination. The system contains both DRFM signal generator and wide band data storage module in a single digital board. The measurement results of the signal loop-back test with 9.5 GHz I/Q modulator will also be described.
이기웅(Kee-Woong Lee),송경민(Kyoung-Min Song),송정환(Jung-Hwan Song),정철호(Chul-Ho Jung),이우경(Woo-kyung Lee),이명진(Myeong-Jin Lee),송용규(Yong-Kyu Song) 한국전자파학회 2017 한국전자파학회논문지 Vol.28 No.2
최근 드론은 다양한 분야에서 활용되고 있지만, 테러, 범죄, 보안 등에 악용될 우려가 높아지고 있다. 해외에서는 안티드론 기술들에 대한 연구결과들이 수차례 발표되었으며, 국내에서도 레이다를 활용한 드론 탐지 기술에 관심이 증가하고 있다. 하지만 상용 드론은 작은 크기와 낮은 반사도로 인해 탐지가 어렵다고 알려져 있어 이를 극복하기 위한 기술개발이 필요되고 있다. 본 논문은 실제로 진행된 ISAR 기반의 드론 탐지 실험결과를 제시한다. 지상에 설치된 레이다를 통해 원거리에서 비행하는 드론의 ISAR 원시데이터를 획득하였으며, 영상형성 기법을 적용하여 탐지 성능이 향상됨을 보인다. Along with the popular use of commercial drones, there are increased concerns on the possible threats from drones intruding into secured areas. The difficulty of drone detection is attributed to its stealthy operation flying at low altitude with low level signature. Consequently, the anti-drone technique has been of major research topic in recent years and among others, the radar detection is considered as the most promising technique. However, the use of conventional radar detection may not be effective due to the low level radar cross sections of the commercial drones. In this paper, ISAR technique has been employed to implement drone detection in urban area. To this purpose, a pulsed radar system is set up on the ground to track flying drones and the corresponding ISAR images are produced by coherent processing.
자궁경부 세포진 검사에서 미확정 편평세포의 임상적 의의와 적절한 처치
윤정묵(Jung Mook Yoon),이상은(Sang Eun Lee),황태율(Tae Yul Hwang),송경민(Kyung Min Song),홍표(Pyo Hong),민수기(Soo Kee Min),황성욱(Seong Ook Hwang),김준미(Joon Mee Kim),고승권(Seung Kwon Koh),조숙(Sook Cho),이우영(Woo Young Lee) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.8
N/A Objective : To evaluate the clinical significance and the optimal management of atypical squamous cells of undetermined significance (ASCUS) in Papanicolaou cervical smears. Method : This study included 25380 cases of cervical Pap smears received from January 1995 to June 2000 by the Department of Obstetrics & Gynecology, Inha Hospital, Medical College, the Inha University. Retrospective review was done on 384 cases of ASCUS. Result : ASCUS and squamous intraepithelial lesions (SIL) were diagnosed in 384 cases (1.5%), and 311 cases (1.1%), respectively. The ratio of ASCUS to SIL was 1.2. Colposcopic directed biopsies revealed 14 cases (14.1%) of low grade SIL (LSIL), 21 cases (21.2%) of high grade SIL (HSIL), and 2 cases (2.0%) of squamous cell carcinoma. Conclusion : The immediate colposcopy with biopsy in women with ASCUS may decrease follow-up visits for Pap testing, reduce patient anxiety, minimize the loss of high risk cases during follow-up and lower medicolegal litigation. The early colposcopy may be the method of choice for follow-up in women with ASCUS in Korea.