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식도암 환자에서 $^{99m}Tc$-Neomannosyl Human Serum Albumin과 $^{99m}Tc$-Phytate를 이용한 감시림프절 탐색의 비교
김현구,강두영,김성은,박종재,정재민,목영재,최영호,Kim, Hyun-Koo,Kang, Du-Young,Kim, Seung-Eun,Park, Jong-Jae,Jeong, Jae-Min,Mok, Young-Jae,Choi, Young-Ho 대한기관식도과학회 2010 大韓氣管食道科學會誌 Vol.16 No.2
Background: The aim of this study was to compare a novel mannose receptor-binding agent(Technetium-99m human serum albumin, $^{99m}Tc$-MSA) with $^{99m}Tc$-phytate for sentinel node mapping in patients with esophageal cancer. Material and Method: Twenty patients with clinical stage T1N0m0 or T2N0M0 esophageal cancer that were candidates for esophagectomy were enrolled. Endoscopic injection of $^{99m}Tc$-MSA or $^{99m}Tc$-phytate was administered at the peri-tumor region before surgery in 10 patients. The radioactive lymph nodes were identified with a handheld gamma probe after lymph node dissection. Results: The patient's age and the sex ratio of both groups were similar. The clinical stage, tumor location, and operative technique did not differ. The total number of dissected lymph nodes did not differ ($28.5{\pm}9.12$ in MSA group, $32.2{\pm}11.24$ in phytate group, p=0.430). The sentinel node was identified in all cases in both groups. The number of sentinel nodes per patient was $2.7{\pm}1.57$ in the MSA group, which was significantly greater than the $1.7{\pm}0.88$ in the phytate group (p=0.036). Five out of 20 patients whose sentinel nodes could be identified had metastases; however, neither group had any false-negative results for sentinel node identification. Conclusion: Sentinel nodes were detected more frequently with MSA than with phytate.
김현구,정호열,박주현,Kim, Hyun-Koo,Jung, Ho-Youl,Park, Ju H. 대한임베디드공학회 2011 대한임베디드공학회논문지 Vol.6 No.1
This paper presents an effective method for detecting vehicles in front of the camera-assisted car during nighttime driving. The proposed method detects vehicles based on detecting vehicle headlights and taillights using techniques of image segmentation and clustering. First, in order to effectively extract spotlight of interest, a pre-signal-processing process based on camera lens filter and labeling method is applied on road-scene images. Second, to spatial clustering vehicle of detecting lamps, a grouping process use light tracking method and locating vehicle lighting patterns. For simulation, we are implemented through Da-vinci 7437 DSP board with visible light mono-camera and tested it in urban and rural roads. Through the test, classification performances are above 89% of precision rate and 94% of recall rate evaluated on real-time environment.
김현구 ( Hyun Koo Kim ),김정화 ( Joung Hwa Kim ),이연희 ( Youn Hee Lee ),이재호 ( Jae Ho Lee ),김산 ( San Kim ) 한국물환경학회 2008 한국물환경학회지 Vol.24 No.2
Perchlorate, which is still unregulated, is found in tap water, posing a threat to public health. In and out of Korea, there is no clear standard for drinking water quality or discharge. To make matters worse, Perchlorate study is in its infancy in Korea. This research tracked fresh water and purified water of water purification facility A and B located at the city of D, where Nak-dong River is being utilized as the purified water. And it was found that purified water shows no particular pattern in Perchlorate concentrations but represented a higher level of concentration compared to fresh water. With utilizing the research results, the study sought the impact of activated-carbon treatment process on Perchlorate elimination and found out that Perchlorate concentrations increased 38% after the process. The result proves that conventional water purification process can`t eliminate Perchlorate. Therefore, it is reasonable that Perchlorate discharge from sources should be minimized.
白村江싸움 직후 일본의 大陸關係의 再開 : 신라와의 관계를 중심으로
Kim Hyun Koo(金鉉球) 일본사학회 1998 일본역사연구 Vol.8 No.-
T’ang emperor T’ai-tsung promised to Kim Chun Chu that China would allow Silla to rule the former territories of Paekche of the south of Pyongyang when the latter visited China to ask China’s help in its struggle against Paekche and Koguryo. Based on this accord both T’ang and Silla conquered Paekche and Koguryo. After the fall of Paekche, however, it became obvious that T’ang wanted to put the Korean peninsula under its direct rule. This led to the conflict between T’ang and Silla, but both sides tried to avoid an armed conflict to achieve the common goal of conquering Koguryo. Japan was afraid that it could be the next target if T’ang came to rule Koguryo and Silla after Paekche. Japan and Silla wanted each other in this respect, but were exercising restraint in approaching each other to avoid the clash between them and T’ang. It became apparent that T’ang would invade Silla and Japan while it was waging a war against Koguryo. This common danger from T’ang made both Silla and Japan get closer publicly. Because Japan’s relations with T’ang could not be dealt with lightly its diplomatic approach to Silla was very cautious. The visit of Silla envoy led by Kim Dong Am in the 9th month of 668 and Japan’s envoy for returning courtesies led by Oyama opened the way for an alliance between two countries. They came to exchange intelligence on T’ang: the second Silla envoy sent in the 9th month of 669 led by Achandokyudung. In 671 T’ang sent its envoys to Japan four times, and Kwak Mu Chong with an embassy of 2,000 people asked a military aid. In the same year Silla’s envoys visited Japan three times. Japan could not but make clear its attitude toward T’ang. Silla finally took the pro-Silla stance: Japan rejected the Chinese offer and severed its diplomatic ties with T’ang. Unlike previous studies which emphasized a policy change between Teach and Tenmu, Japan’s foreign policy since the battle of the Paekchon river changed little.
김현구(Hyun-Koo Kim),이재권(Jae-Gwon Lee),김남석(Nam-Suk Kim),박명주(Myeong-Ju Park),이희성(Hee-seong Lee),김미혜(Mi-hye Kim) 한국엔터테인먼트산업학회 2012 한국엔터테인먼트산업학회 학술대회 논문집 Vol.2012 No.5
본 논문에서는 가정용 게임기 XBOX의 추가 장비인 KINECT를 활용하여 사용자가 입력하는 지화를 인식하는 프로그램을 연구하였다. 입력되는 지화를 한글로 나타내기 위해 YCbCr 색 공간을 이용한 이진화 와 팽창 침식 등의 모폴로지 기법을 사용하여 손 영역을 추출한다. 추출된 손 영역을 템플릿매칭 하여 가장 비슷한 모양을 찾아내 사용자에게 출력해 주는 시스템을 제안한다.