한반도 및 인근해역의 지진특성

전정수,전정수 대한지질공학회 2000 지질공학 Vol.10 No.2

지진자료를 분석해 지진기록으로부터 산업현장에서 발생하는 인공지진을 식별하여 정확한 지진 카타로그를 제공하는 것은 지진연구에서 가장 기초적인 과정이지만 또한 매우 중요한 과제이다. 특히 지진계에 기록된 지진자료 만으로 이를 식별하는 것은 매우 어려운 관계로 선진국에서는 수십 년 전부터 많은 연구가 수행되어 오고 있다. 현재 국제사회에서 발효를 앞두고 있는 CTBT 체제에서 인공발파와 자연 지진의 식별은 외교 정책적인 면에서 매우 심각한 국제문제를 야기 시킬수 있다. 본 연구에서는 지진파 - 공중음파 관축소의 자료를 종합 분석하여 지진과 인공발파를 식별하는 방법을 추천코자 한다. 최극 한반도 및 주변해역에서 발생한 지진들의 분포는 남쪽에서는 서산-포항을 잇는 N60-70$^{\circ}$W 방향으로 진앙이 집중되며, 북쪽에서는 주로 평안도와 황해도에 집중된다. 1936년 이후 한반도 및 인근해역에서 발생한 비교적 큰 지진들(규모 4.5 이상) 14개의 메카니즘(mechanism)은 주로 수평이동단층(strike-slip faulting) 형태로 이는 이 지역에 작용하는 주 응력은 압축력임을 나타낸다. 이는 한반도 및 인근해역에 작용하는 응력장이 동쪽에서 유라시아판(Eurasian Plate) 밑으로 침강하는 태평양판(Pacific Plate)의 영향뿐만 아니라 남서쪽에서 충돌하는 인도판(Indian Plate)의 영향도 작용하는 것으로 판단된다. Discrimination between natural earthquakes and man-made explosions is very essential but critical matter in Seismology. In the CTBT Monitoring business, this is very crucial issue and sometimes could occur the international conflict. In this study, we analyzed seismic and infrasound data from Chulwon Seismo-Acoustic Array and would like to introduce routine data processing procedures at the Korea Institute of Geology, Mining and Materials(KIGAM) to discriminate the earthquakes and artificial explosions. We found analyzing acoustic data together with seismic data is very effective way to identify and discriminate man made explosion from natural earthquake. Recent earthquakes in and around the Korean Peninsula are concentrated in a narrow zone with N60-70$^{\circ}$W in southern Korea, and Pyungan and Hwanghae Province in northern Korea. The mechanism of 14 larger earthquakes in and around the Korean Peninsula since 1936 show predominant strike-slip faulting together with minor thrust component. This indicates horizontal compression is dominant in and around the Korean Peninsula.

홍콩과 韓國의 時計産業 比較硏究

田正秀 慶尙大學校 經營行政大學院 1991 最高管理者課程論文集 Vol.2 No.-

SIFT와 다중측면히스토그램을 이용한 다중물체추적

전정수,문용호,하석운 대한임베디드공학회 2014 대한임베디드공학회논문지 Vol.9 No.1

In multiple object tracking, accurate detection for each of objects that appear sequentially and effective tracking in complicated cases that they are overlapped with each other are very important. In this paper, we propose a multiple object tracking system that has a concrete detection and tracking characteristics by using multi-lateral histogram and SIFT feature extraction algorithm. Especially, by limiting the matching area to object's inside and by utilizing the location informations in the keypoint matching process of SIFT algorithm, we advanced the tracking performance for multiple objects. Based on the experimental results, we found that the proposed tracking system has a robust tracking operation in the complicated environments that multiple objects are frequently overlapped in various of directions.

양측성 신우 주의 낭종(Parapelvic Cyst) 1예

전정수,박영하,김승준,구완서,방병기,안중현,권혁호,신영신 대한신장학회 1994 Kidney Research and Clinical Practice Vol.13 No.2

A parapelvic renal cyst was usually identified during excretory urography as a mass causing extrinsic compression on the renal pelvis. This appearance is nonspecific, however, and the etiology of such a mass must be further investigated. Recently computed tomography, magnetic resonance imaging (MRI) and sonography have replaced angiography as the preferred methods of evaluating masses in this region. The main radiological findings consisted of a round smooth mass distorting the pelvis and elongating or dilating the calices. Therefore differential diagnosis of renal hilar masses is necessary. The appearance of parapelvic cysts on both CT and sonography may minic hydronephrosis and unnecessarily lead to further invasive studies. As, we experienced the parapelvic cyst in a 36 years old female patient and she is being closely followed by us with our treatment plan of alcohol ablation. We report it here with a review of the literature.

철근공사 품질 향상을 위한 소고

전정수 江原大學校 産業大學院 1996 技術管理者課程論文集 Vol.3 No.-

현대 화예디자인과 섬유예술의 융합표현에 관한 연구

전정수 한국조형디자인학회 2012 조형디자인연구 Vol.15 No.2

현대미술은 탈장르화와 장르간의 융합을 통해 특정한 장르에 얽매이지 않고 작가의 조형세계를 자유롭게 표현하는 방시긍로 변목하고 있다. 1960년대의 다다이즘에서 시작한 오브제(Objet)미술의 발전은 기존 미술의 개념을 확장시키고 탈장르와 융합을 가속화시켰다. 지금까지 꽃꽃이 공예와 섬유공예는 각각 화훼산업과 섬유산업의 발달로 인해 생활 공예와 디자인, 순수 조형예술로 양분되어 발전하고 있다. 하지만 두 장르는 서로 비숫한 특성을 가지고 있다. 섬유예술에 있어 재료로 사용되는 식물성 섬유는 식물의 열매와 줄기, 표피에서 얻는다. 화예디자인의 주 소재는 꽃과 식물로서 섬유예술의 소재와 관련성을 가진다. 조형기법에 있어서도 유사성을 보인다. 소재와 기법의 유사성은 두 장르간의 융합의 바탕이 될 수 있다. 화예디자인과 섬류예술의 융합은 조형의 가치를 재발견하여 화장시키고 작가들의 창조적 표현 욕구를 충족시킬 수 있다. 또한 설치미술, 환경조형, 대지미술의 조형적 특성들을 공유하고 있어, 융합표현의 가장 큰 장점인 조형표현의 확대와 친환경적 조형예술을 기대할 수 있다. 연구는 화예디자인과 섬유예술의 현대미술사적 개념과 이론적 고찰, 현대조형예술에서의 섬유와 화훼 융합작품 연구, 실제로 융합한 작품 4점을 표현하는 방법으로 진행하였다. The modern art is transformed by post-genre and fusion, which make the artist to express their beauty of formative arts much more freely. Object art extended concept of the art and accelerated post-genre and fusion. Growth in flower industry and textile industry devide flower art and fiber art, and they developed separately. But they have similarity. In fiber art, vegetable fiber, the main material, comes from fruits, stems, and skin of plants. For flower art, the primary materials are flower and plants which has relevance with fiber art. And have some likeness in techniques. Similarity in material and techniques is the basis for fusion of two genres. Fusion of flower design and fiber art will rediscover and expend the value of formative arts, and fulfill the creativity of the artist. Also it shares attribute of installation art, environmental sculpture, and land art that extend expression of formative arts and make it more eco-friendly. The study covers the concept and theoretical approach of flower design and fiber art, research of fusion art works in modern formative arts, and expression of four fusion art works.

Numerical investigation of vortex shedding and vortex-induced vibration for flexible riser models

전정수,김우전 대한조선학회 2010 International Journal of Naval Architecture and Oc Vol.2 No.2

The numerical study about the vortex-induced vibration and vortex shedding in the wake has been presented. Prior to the numerical simulation of flexible riser systems concerning engineering conditions, efficiency validating of the proposed FSI solution method have been performed. The comparison between numerical simulation and published experimental data shows that the CFD method designed for FSI solution could give acceptable result for the VIV prediction of flexible riser/pipe system. As meaningful study on VIV and vortex shedding mode with the focus on flexible riser model systems, two kinds of typical simulation cases have been carried out. One was related to the simulation of vortex visualization in the wake for a riser model subject to forced oscillation, and another was related to the simulation of fluid-structure interaction between the pipes of coupled multi-assembled riser system. The result from forced oscillation simulation shows that the vortex-induced vibration with high response frequency but small instantaneous vibration amplitude contributes to vortex conformation as much as the forced oscillation with large normalized amplitude does, when the frequency of forced oscillation was relatively high. In the multi-assembled riser systems, it has been found that the external current velocity and the distance between two pipes are the critical factors to determine the vibration state and the steady vibration state emerging in quad-pipe system may be destroyed more easily than dual-pipe system.

이동식 지진-공중음파 관측망을 이용한 경상분지 일원에서의 미소지진 발생 현황 및 특성 분석

전정수,제일영,신인철 대한지질학회 2008 대한지질학회 학술대회 Vol.2008 No.

제 23 차 학술대회 : 49. 위장관 점막 재생에 관한 실험적 연구

전정수,김재성,박원호 대한외과학회 1971 대한외과학회 학술대회자료집 Vol.- No.-

담도경하 전기수력 쇄석술 (Choledochoscopic Electrohydraulic lithotripsy : EHL)을 이용한 잔류 담석의 제거

전정수 한국간담췌외과학회 2000 한국간담췌외과학회지 Vol.4 No.1

Choledochoscopic lithotomy with the aid of electrohydraulic lithotripsy ( EHL ) was performed in 12 patients at the Department of Surgery, College of Medicine, the Catholic University of Korea, St. Vincent Hospital between January 1996 and March 1998. This retrospective analysis include 4 patients with common bile duct (CBD) stones, 5 patients with intrahepatic duct (IHD) stones, and 3 patients with CBD & IHD stones. The male to female ratio was 1 to 2. The peak incidence of age was the fifty. As a route for the choledochoscopy, a T-tube tract was used in 9 patients, while percutaneous biliary drainage followed by dilatation of the tract was established in 3 patients. The largest stones measured 22mm (by 5mm), the average is 10.3mm. Average number of session which performed for IHD stones was 3.7, while that of CBD stones was 2.7. Complete removal of the stones was achieved in 7 of 12 patients. Retained stones of CBD were removed completely in all cases. We could not removed retained stones completely in cases of multiple, impacted stones in peripheral ducts, associated stricture and acute angulation of IHD & CHD which choledochoscopic manipulation make difficult. Minor complications were bleeding from the bile duct mucosa in 1 patient and postprocedure chills and fever in 1 patient. In conclusion, choledochoscopic lithotomy with electrohydraulic lithotripsy is efficient and will be useful to remove biliary calculi in patients who have poor surgical risks. Choledochoscopic lithotomy with the aid of electrohydraulic lithotripsy ( EHL ) was performed in 12 patients at the Department of Surgery, College of Medicine, the Catholic University of Korea, St. Vincent Hospital between January 1996 and March 1998. This retrospective analysis include 4 patients with common bile duct (CBD) stones, 5 patients with intrahepatic duct (IHD) stones, and 3 patients with CBD & IHD stones. The male to female ratio was 1 to 2. The peak incidence of age was the fifty. As a route for the choledochoscopy, a T-tube tract was used in 9 patients, while percutaneous biliary drainage followed by dilatation of the tract was established in 3 patients. The largest stones measured 22mm (by 5mm), the average is 10.3mm. Average number of session which performed for IHD stones was 3.7, while that of CBD stones was 2.7. Complete removal of the stones was achieved in 7 of 12 patients. Retained stones of CBD were removed completely in all cases. We could not removed retained stones completely in cases of multiple, impacted stones in peripheral ducts, associated stricture and acute angulation of IHD & CHD which choledochoscopic manipulation make difficult. Minor complications were bleeding from the bile duct mucosa in 1 patient and postprocedure chills and fever in 1 patient. In conclusion, choledochoscopic lithotomy with electrohydraulic lithotripsy is efficient and will be useful to remove biliary calculi in patients who have poor surgical risks.