• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 정기총회 및 창립40주년기념 학술대회 학회본부
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• pp.383-386
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• 1987

In this paper, a low frequency acoustic microscope system has been built for the purpose of detecting sub-surface defects in materials. 100 won coin, aluminium, ceramics, I.C. are used for experimental and the acoustic microscope is operated in the focused and defocused mode at a frequency of 3 MHz. In experiment, it has shown that acoustic microscope has the resolution of 0.5mm and the defects presented on the surface and near surface of samples are detected by a monitor.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1979년도 제13차 학술대회 연제순서 및 초록
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• pp.10.3-10
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• 1979

흥미있는 이물 4례를 경험하였으며, 술후 경과가 좋았기에 보고하는 바이다. 증례 1 : 5재남아에서 8개월이상 종격동에 들어 있었던 10원주화를 관혈적으로 제거하였다. 증례 2 : 8재남아의 우측기관지에 흡기시 피리 소리를 내면서 들어가 있었던 풍선피리심. 증례 3, 4 : 5재남아와 5재여아의 식도 제일협착부에 10원동전이 각각 2개식 중복되 걸려있었다.

• Journal of Chest Surgery
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• 제25권2호
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• pp.183-187
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• 1992

Reconstructive surgery for corrosive esophageal stricture was performed in 392 patients at National Medical Center from 1959 to 1990 Between Jan. 1971 and Dec. 1990, 23 cases were experienced stenotic anastoma of neck after reconstructive surgery for corrosive esophageal stricture. The major procedure of esophageal reconstruction was colon interposition without resection of the strictured esophagus except jejunal interposition in 1 case. There were 12 males % 11 females, and mean age was forty years. The caustic materials were 16[70%] alkali and 7[30%] acid. Half of the cases had hypopharyngeal injury. After reconstructed surgery, dysphagia was developed immediate in 65%, from 2 months to 5 months in 31%, and from years in 4%[1 case]. The complications were anastomatic leakage in 13 cases, anastomatic stenosis in 8 cases, graft gangrene in 1 case, and cancer development in 1 case. The therapeutic procedures were end-to-end anstomolis & partial resection of stenotic anastoma in 18 cases, bourgination in 2 cases, and coin interposition with graft removal in 3 cases. The therapeutic results were excellent in 16 cases, mild discomfort in 3 cases, poor in 3 cases, and death in 1 cases.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2018년도 제58차 하계학술대회논문집 26권2호
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• pp.395-396
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• 2018

인터넷 쇼핑몰, 오프라인 매장에서 구입한 제품의 포토 리뷰를 블로그, 쇼핑몰에 올릴 때 얼굴 노출을 꺼려하여 직접 사진 처리 프로그램 등을 통해 얼굴을 가리거나 사진을 얼굴 부분까지 잘라 내는 등의 번거로운 작업을 거친 후 올리게 된다. 위와 같은 불편함을 해결하기 위해 쇼핑몰, 블로그 등 인터넷 매체를 통해 포토 리뷰를 작성 할 때 얼굴이 포함된 사진을 올리더라도 자동으로 얼굴 인식 후 의상에 어울리는 소품을 합성하여 구매자가 포토 리뷰를 올리기 편한 환경을 제공하고자 한다. 이를 위해 기본적인 얼굴 추적과 얼굴 특징 점을 기반으로 한 안경과 같은 소품 합성 등이 필요하다. 본 연구에서는 실시간으로 얼굴 및 특징점을 추출하고 이를 기반으로 얼굴에 소품을 합성하는 기본 기능을 구현하였다.

• Advances in pediatric surgery
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• 제13권2호
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• pp.112-118
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• 2007

Ingested foreign bodies are common occurrences in the pediatric population. From October 2002 to April 2006, eight patients (6 male, mean age: $30.9{\pm}14.4$ months, range: 7~45 months) who had ingested metallic foreign bodies, such as bar magnets, coin-type magnets, screws, metal beads, and disk batteries, were selected for foreign body removal using a magnetic device under floroscopic control. A 1-cm-long cylindrical magnet (6 mm in diameter) was placed at the end of a 150-cm-long plastic tube from an IV set. The magnet was passed through the mouth into the stomach. Under fluoroscopic control, the magnet was maneuvered so that it attached to the metallic foreign bodies. The forgeign body was then easily removed by retracting the magnet with the metallic object attached. This procedure was successful in six patients of 8 patients. This procedure is a minimally-invasive and may avoid the use of anesthesics, endoscopy or surgery.

• 대한인간공학회지
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• 제18권1호
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• pp.121-131
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• 1999

There have been many questionnaires, catecholeamins analysis and bio-signal analysis to analyze human stress condition through out the years, and especially researches in bio-signal analysis have been actively increasing. The purpose of our research is Quantitative analysis of stress with synthesis of bio-signals. The stress status was estimated using the bio-signals and fuzzy theory which combines these signals and physiological knowledge. Stress was estimated by a 'coin-stacking' experiment with two type-relax and stress status. To do the experiment EMG, respiration, periphery temperature, heart rate and skin conductances were used to evaluate human stress stages. The system was tested to 10 healthy persons and achieved a template of a stress progress and stress variations were classified to 4 steps by continuous or rising status of stress progress.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1983년도 제17차 학술대회연제순서 및 초록
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• pp.13.2-13
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• 1983

식도 및 기도이물은 이비인후과 영역에서 흔히 접하는 질환으로써 특히 식도이물의 보고 예는 국내문헌상에서도 수 많이 찾아 볼 수 있으며 이의 진단에는 X-선 촬영이 필요불가결하며 중요한 수단으로 되어 있음은 주지의 사실이다. 이중 특히 경부측면 X-선 검사를 간과하는 경우가 있으나 최근 저자들은 4세의 여아에서 2개의 동전이 중첩 계류된 것을 경부측면 X-선상에서 확인하여 식도경술하에 제거한 예를 경험하였기에 문헌고찰과 더불어 보고하면서 식도 및 기도이물, 특히 동전의 식도이물이 의심되는 환자에서는 경부 전후경 X-검사는 물론 특히 경부 측면엑스선 검사를 반드시 실시하여야 한다는 것을 강조하는 바이다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1981년도 제15차 학술대회연제순서 및 초록
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• pp.11.3-11
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• 1981

이비인후과 영역에 있어서 식도, 기관 및 기관지 이물에 대한 보고는 흔히 볼 수 있으나 비인강내의 이물에 관한 보고는 그리 흔하지 않다. 특히 소아에 있어서의 음식통로의 이물은 대개 식도의 제 1협착부에 많은 것으로 알려져 있으나 저자들은 최근 6개월된 소아에서 동전이 비인강내에 매복되어있는 1례를 치험하였기에 보고하면서 소아에서 음식통로의 이물이 의심될 때에는 식도부위 뿐만 아니라 비인강부까지도 X-선 촬영을 해야 한다는 필요성을 강조하는 바이다.

• 한국컴퓨터정보학회논문지
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• 제20권11호
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• pp.105-110
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• 2015

This paper deals with a newly proposed algorithm for stable marriage problem, which I coin threshold algorithm. The proposed algorithm firstly constructs an $n{\times}n$ matrix of the sum of each sex's preference over the members of the opposite sex. It then selects the minimum value from each row and column to designate the maximum value of the selected as the sum threshold $p^*_{ij}$. It subsequently deletes the maximum preference $_{mzx}p_{ij}$ from a matrix derived from deleting $p_{ij}$ > $p^*_{ij}$, until ${\mid}c_i{\mid}=1$ or ${\mid}c_j{\mid}=1$. Finally, it undergoes an optimization process in which the sum preference is minimized. When tested on 7 stable marriage problems, the proposed algorithm has proved to improve on the existing solutions.

• Journal of Electrochemical Science and Technology
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• 제9권1호
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• pp.51-59
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• 2018

Various Si-Fe-Al ternary alloys were prepared with the same amount of Si by the melt spinning technique. The feasibility of the capacity prediction approach based on the estimation of the active amount of Si using the phase diagram was practically examined and reported. These predictions were verified by the electrochemical test of fabricated coin cells and other characterization methods. The capacity prediction approach using the phase diagram might be a fundamental and efficient method to accelerate the practical application of Si-based alloys as the anode material for Li-ion batteries. The details on the prediction procedure were discussed.