• 대한원격탐사학회지
• /
• 제40권4호
• /
• pp.343-350
• /
• 2024

Meta에서 신속한 영상 분할 기능을 제공하는 대규모 컴퓨터 비전 생성 모델을 발표한 이후, 여러 활용 분야에서 이를 적용하려는 연구가 이루어지고 있다. 이 연구에서는 위성 영상 자료에 Segment Anything Model (SAM)을 사용할 수 있는 QGIS 플러그인 Geo-SAM을 사용하여 수체 객체 탐지와 추출에 대한 SAM의 적용성을 조사해 보고자 하였다. 실험 대상 자료는 국토위성(Compact Advanced Satellite 500, CAS500-1) 영상을 사용하였다. 이 자료를 가지고 SAM을 적용하여 얻은 결과는 같은 입력 영상으로부터 수작업으로 제작한 수체 객체 자료, Open Street Map (OSM)의 수체 자료, 국토지리정보원의 수계 수치지도와 비교하였다. SAM 처리 결과와 비교 대상 자료를 이용하여 추출된 모든 객체를 대상으로 계산한 경계사각형의 교집합/합집합의 평균값을 나타내는 mean Intersection over Union (mIoU)은 각각 0.7490, 0.5905, 0.4921로 나타났고, 각 자료에서 공통으로 나타나거나 추출된 객체에 대해 계산한 결과는 차례대로 0.9189, 0.8779, 0.7715로 나타났다. SAM을 적용한 결과와 다른 비교 자료와의 공간적 일치도를 분석한 결과, SAM에서는 한 개의 수체 객체를 여러 개의 분할 요소로 나타내므로 수체 객체 분류를 지원하는 의미 있는 결과를 보이고 있음을 알 수 있다.

• 한국수학사학회지
• /
• 제27권5호
• /
• pp.313-327
• /
• 2014

Based on the importance and the necessity of the study on history of mathematics and mathemtics education using history of mathematics for finding the cultural identity and values of our traditional mathematics, we refer to two types of teaching and learning methods utilizing 'WonYongSamBangHoGu', the second theme of 'SanSulGwanGyeon' written by Lee Sang Hyuk. First, we present various cases of 'WonYongSamBangHoGu' constructed utilizing kind of mathematics learning software, GeoGebra by high school freshmen belonging to the Education Centers for the Gifted in Seoul Science Park. Second, We modernly reinterpret the questions contained in 'WonYongSamBangHoGu' and show several developed items using it.

• 복식
• /
• 제34권
• /
• pp.195-208
• /
• 1997

1) The color of JOGORI and CHIMA was such gorgeous and those garments were put on during the events of GAM-EUNG-CHUNG-BAI HO-GU-GEO-RI JO-SANG-GEO-RI DEWT-JUN and CHAN-BOO-GEO-RI. 2)BULSA-JANG-SAM(JE-SUK-GEO-RI) was white colored and had wide sleeves putting on a pink priestrobe and a pink belt on it 3) they put on HONG-CHUL-NIK(GU-REUNG) and CHONG-CHUL-NIK(DAE-GEO-RI). 4)They put on GOO-GUN-BOK(JUN-RIP JUN-BOK(BYUL-SUNG-GEO-RI) DONG-DA-RI(Expel the demon) 5) MONG-DOO-RI(MAN-SIN-MAL-BYUNG) put on the garment constructed with the color and from of a white straight collar a wide sleeve and a pink belt 6) A long robe was colored with green (GAM-EUNG-CHUNG-BAI) and was used not as a headdress but as a man's overcoat. 7) CHANG-EUI was a green colored small CHAHG-EUI(SUNG-JO-GEO-RI). As observed above the Shaman apprel during Chosun Dynasty is a part of the traditional clothing originated from THE THEORY OF THE COSMIC DUAL FORCES and THEORY OF THE COSMIC DUAL FORCES and the FIVE ELEMENTS (i.e. metal wood water fire and earth) It's basic form and wearing method were not so different from the traditional clothing silmilar to the official uniform during Chosun Dynasty and the official uniform was the symbol of authority(almost almighty) at that time of period and to that the Shaman apparel was constructed with the more gorgeous colors to emphasize the sanctity or the descent of the Divine Being from heaven. We realized that a Shaman had put on the symbolic garment suitable for the grade and nature of the Divine Body at every events to enter into " The World of Gods"Gods."

• 한국측량학회지
• /
• 제19권3호
• /
• pp.273-281
• /
• 2001

GSIS와 AHP법을 이용하여 삼척지역을 대상으로 산사태 발생 가능성을 분석하였다. 산사태를 유발하는 많은 인자들 중에서 경사도, 경사방향, 지질, 토양, 임상자료들은 기존의 지도자료를 이용하여 입력하여 데이터베이스를 구축하였다. 연구대상지역의 환경적ㆍ지리적 특성을 고려하여 산사태를 유발하는 인자를 결정하였으며, AHP법을 적용하여 유발인자들에 대한 입력값을 결정하였다. 산사태가 발생할 가능성이 있는 지역은 산사태 유발인자들로 만들어진 각각의 레이어를 중첩함으로써 작성되었다. 마지막으로 작성된 도면을 실제 산사태가 발생한 곳과 비교함으로써 산사태 유발인자들이 산사태 발생에 미치는 영향을 알아보았다. 그 결과 삼척지역에서는 토양과 지질적 요소가 가장 많은 영향을 미쳤다는 것을 알 수 있었다.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
• /
• pp.221-224
• /
• 2005

Hyperspectral image data have great potential to depict more detailed information on biophysical characteristics of surface materials, which are not usually available with multispectral data. This study aims to test the potential of hyperspectral data for classifying five soil classes defined by the vector product interim terrain data (VITD). In this study, we try to classify surface materials of bare soil over the study area in Korea using both hyperspectral and multispectral image data. Training and test samples for classification are selected with using VITD vector map. The spectral angle mapper (SAM) method is applied to the EO-I Hyperion data and Landsat ETM+ data, that has been radiometrically corrected and geo-rectified. Higher classification accuracy is obtained with the hyperspectral data for classifying five soil classes of gravel, evaporites, inorganic silt and sand.

• 혜화의학회지
• /
• 제10권1호
• /
• pp.259-268
• /
• 2001

As mentioned above, I have acquired some valuable results about medical treatments with acupuncture for "Trigeminal neuralgia" after studying oriental medical books. 1. The course of medical treatments with acupuncture was, first of all, applying general ones, and then, assisting ones based on occuring area of pain and the cause. 2. For general treatments, "Chok-yangmyong-Wi-Kyong", distributed widely on the face, was used in great numbers. The order, according to the number of using times, of spots for acupuncture was Ha-kwan(11 times), Hap-kok(10), Chan-juk(7), Hyop-geo, Tae-yang, Sa-baek(individually 6). 3. For assisting treaments based on occuring area of the pain, spots of the Kyong-rak, passing through occuring area of the pain, and Kyong-woe-ki-hyol were used in great numbers. 4. The order was O-je, Chan-juk, Yang-baek(individually 8), Tae-yang(5) for the pain of first branch of the trigeminal nerve; Sa-baek(12), Kwan-ryo(6), Go-ryo(5) for the pain of second one; and Hyop-geo, Ha-kwan(individually 6), Dae-young, Hyop-seung-jang(individually 5). Seung-jang(4). 5. For assisting treatments based on the cause, "One-hyol(原穴)", "Rak-hyol(絡穴)" and "5-soohyol(五輸穴)" were used in great numbers. 6. The order was Pung-ji(10), Hap-kok(9), Woe-kwan(5) for "Woe-Kam(外感)"; Nae-jong(12), Tae-chung(10), Chok-sam-ri(7) for "Kan-Wi-Hwa-Seung(肝胃火升)"; Tae-gue(7), Sam-um-kyo, Pung-ji(individually 2) for "Ho-Hwa-Sang-Seung(虛火上升)"; Pung-ryung(4) for "Pung Dam-Jo-R ak (風痰阻絡)"; Kyok-su(2) for "Ki-Che-Hyol-Ho(氣滯血虛)".

• 한국지반환경공학회 논문집
• /
• 제3권2호
• /
• pp.5-14
• /
• 2002

본 연구에서는 지중내에 설치한 매설관에 작용하는 응력-변형 특성을 분석하였다. 연약지반의 수축과 팽창특성을 고려할 수 있는 Egg-Cam Clay 모델을 소개하였다. 기존에 사용하던 Cam Clay 모델은 연약지반의 수축 및 팽창 특성을 고려하지 못하는 단점이 있기 때문에 Cam Clay 모델을 수정하여 Egg-Cam Clay 모델을 제안하였다. 이와는 별도로 지중내의 매설관에 작용하는 응력-변형을 감소시키기 위하여 지오그리드, EPS 지오폼을 매설관과 함께 설치하였다. 탄소성모델을 이용하여 현장에 시험시공한 여러 단면에 유한요소해석한 결과 긍정적인 효과를 얻었다.

• 수산해양기술연구
• /
• 제46권3호
• /
• pp.204-213
• /
• 2010

Test fishing was carried out using six kinds of different mesh sizes (20, 22, 24, 28, 35, 40mm) for springnet-pot to study bycatches according to the mesh size and catches survey was done for another one (mesh size : 22mm, entrance round : 350mm) in Geo-je & Tong-young waters of Korea. On the first sea experiment, it was thought that suitable mesh size of spring-net-pot catching conger-eel over 35cm with decreasing the catches of conger-eel (Conger myriaster) below 35cm was 24mm. On the second sea experiment, commercial catches were crabs (Charybdis bimaculata), octopus minor (Octopus variabilis) and others including conger-eel, and catches proportion was 60% of total catches weights. There was no big difference for the monthly catches. Self-consumption catches were 9 species including conger-eel below 35cm holding 50% of catches in the side of weights. There were 40% of bycatches for the catches weights and 63% for catches numbers in the 22mm mesh size of spring-net-pot having entrance round over 140mm. It showed that 50% of catches weights were discarded.

• 한국지구물리탐사학회:학술대회논문집
• /
• 한국지구물리탐사학회 2007년도 공동학술대회 논문집
• /
• pp.291-296
• /
• 2007

We measured potential waveform of load, displacement, micro electric signal generated by rock and mortar fracture using PXI A/D Converter. The rock type used for measurement was used granite, limestone and sandstone, and mortar specimen. we made measuring equipment of physical properties to confirm basic information of physical properties, measured physical properties of rock engineering, electric resistivity and seismic velocity. Potential waveform system was built using PXI A/D Converter and measured potential waveform of load, displacement, micro-electric signal generated using this during uniaxial compressive test by the specimen finished such test of physical properties. Using the saturated rock and mortar specimen, micro electric signal increased, and It didn't increase a signal in dried rock and mortar specimen according as load and strain rate increases. But signal also increased in saturated or dried specimen in case of sandstone. It was possible to check the close correlation relationship the signal and fracture behavior by a compressive load as the signal of fracture position was increased bigger than the other position. It was also possible to check the correlation relationship between physical properties and micro geo-electric signal.

• 대한공간정보학회지
• /
• 제14권3호
• /
• pp.13-22
• /
• 2006

3차원 지형공간정보의 활용범위가 확대되면서 다양한 형태와 크기의 건물들이 존재하는 광범위한 도시지역에 대하여 신속하고 정확하게 실세계에 가까운 3차원 건물 모형을 구축하는 기술 개발이 요구되고 있다. 기존의 항공사진이나 고해상 위성영상을 이용한 3차원 도시 지형공간의 구축 연구와는 달리 최근에는 높은 정밀도를 가진 항공 LIDAR 관측 자료를 활용한 3차원 건물 복원에 관한 연구가 활발히 진행되고 있다. 본 연구에서는 Zero-crossing의 특성을 갖는 LoG 연산자를 이용하여 높이별로 건물의 경계선 정보를 추출하고 Douglas-Peucker 알고리즘을 이용하여 경계선을 직선화하여 건물의 경계선을 정제하고 3차원으로 건물을 복원하는 기법을 제안하였다.