3DFT-CISS를 이용한 감각신경성 난청 환자의 MBI

김성원,여상원,김상후,김종수,조재흥,이동희,이승균 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

부산 북항지역 해양 탄성파탐사

김진후,정성기,배종견,박찬우 東亞大學校 海洋資源硏究所 1995 硏究論文集 Vol.9 No.1

A marine seismic exploration with 3.5khz sub-bottom profiler was carried out as a part of preliminary geological survey in the Buckhang area, Pusan, where an ocean bridge is considered to be constructed connecting Chunghak-dong, Yongdo-ku with Kamman-dong, Nam-ku. The seismic survey was conducted on the 10 survey lines(total length of 10km), and the aim of this survey was to profile depth of bedrock and investigate subsurface structures such as faults and fracture zones that might be present in the area. The subsurface structure consists of the upper sediment layer and the lower acoustic bedrock. The thin sediment layer covers the bedrock on the west and is getting thicker eastward. The bedrock depth also increases eastward, up to 15m at the west area and 24m in the east area. A minor fault is known to exist at the shore of Chunghak-dong, Youngdo-ku, but there is no evidence that indicates the existence of fault or fracture zones over the study area.

靑果物에 있어서의 Ethylene生成과 作用

金成福,李彰厚 高麗大學校自然資源科學硏究所 1993 自然資源科學硏究 Vol.1 No.-

청과물에 대한 에틸렌의 생성과 작용에 대한 검토에서, 비록 에틸렌이 수많은 식물에서 여러가지 반응을 나타낸다고는 할지라도, 에틸렌 생성은 거의 언제나 환경적 변화나 생리적 변화에 대한 하나의 신호로서 나타난다는 것이다. 에틸렌 생성은 환경적 스트레스(물리적 자극, 침수)에 반응하여 증가하고, 생리적으로 성숙단계에 도달한 기관(maturing fruits and flowers, or aging leaves)에서 증가한다. 또한 에틸렌은 식물 생육에서 혼자서 작용하기보다는 다른 hormon과 관련하여 작용하는 수가 더 많다. 특히 식물조직에서 에틸렌의 역할은 다른 hormon들의 농도에 의해 조절된다. 식물체의 조직에서 에틸렌이 여러가지 과정에서 중재하고 있는 메커니즘에 대해서는 별로 알려진 바가 없으며, 만약 이들 기구들이 차츰 알려져 간다면 더 많은 흥미와 발전을 기대할 수 있으리라 생각된다. 에틸렌의 작용기작에 관한 연구는 에틸렌의 생체막에의 영향, 단백질 합성의 유도 및 핵산대사와의 관계, 카네이션 꽃의 에틸렌 대사와의 관계(Beyer, 1977), ^14C-에틸렌의 ribosome RNA와 단백질에로의 흡착(Shimokawa 등, 1968), 금속을 포함하는 수용체와의 결합(Breg 등, 1965), 더 나아가서는 식물에 있어서 에틸렌의 결합장소의 성질이란 동적해석으로 발전하고 있다.(Beggs 등, 1986; Bengochea 등, 1980; Shimokawa 등, 1978; Thomas 등, 1984; Yang, 1985). 이와 같이, 여러 방면에서 접근해 온 에틸렌의 작용기구에 관한 연구는 일반적인 hormon의 작용기작에서처럼 hormon 전구체 → hormon → hormon 수용체 또는 hormon 결합체 → 초기반응 → 확대반응으로 연결지어 연구하려는 경향이다.

LBL 방법을 이용한 3차원 수중위치결정에 관한 연구

김진후,이상화 東亞大學校 海洋資源硏究所 1988 硏究論文集 Vol.1 No.1

A 3-dimensional underwater position of an object is obtained by using a LBL(Long Baseline) method. A five-transponder array with a transducer which is located inside or above an array is considered and the coordinates of the fix point is calculated through a weighted least-squares method. A singular value decomposition(SVD) method is adopted to solve a system of leastsquares and it was found that the weighted least-squares method provides more accurate results than the non-weighted least-squares method does. When the tranducer is far above the transponder array, the accuracy of the z-coordinate is generally poor. But it can be overcome by using a weighted least-squares method and by using moored buoys which carry transponders. This underwater positioning system can be applied to navigation and dynamic positioning system as well as underwater tracking system for monitoring underwater operations.

Charge Coupled Device를 이용한 화상 분석 시스템에 대한 연구

김기준,성기천,이후설 대진대학교 2002 大眞論叢 Vol.10 No.-

It is very important to use the Charge Coupled Devices(CCDs) in spectrometric Analysis because we can study the molecular structures, molecular energy level, Intermolecular reaction, absorption or emission, photochemistry, weakly bound Molecular Energy, Fluorescence and Photo dynamic Therapy(PDT). CCD is very essential to study the molecular structures and medical engineering combining laser spectroscopy in the modem physical and chemistry. Thus, this study has manufactured and designed the electromagnetic spectrometric with CCD and then analyzed the phenomenon of foot. A video imaging system was studied for direct observation of the separated parts of bores during photons aborted and scattered. Data aquisition in addition with the possibility of further image processing, made it possible to clear and real image of the separated part of medical engineering. In the yesterday, CCD was thought to be used in only broadcasting system. But nowadays. it is thought to be used the industrial demand in observations, instrumentations and robotics as the industry develops.

環境-貿易連繫 論議動向과 우리 나라 環境産業 育成方案

金成厚,金炳運 東新大學校 1997 論文集 Vol.9 No.-

Since the beginning of 1990's, GATT/WTO, OECD, UN and ISO have intensively dealt with environment-trade linkage, as the environment issues became to play more and more important role in the world economy. As a matter of fact, the intensified environment issues will result in a rapid growth of environment industry itself. The issues will also give a positive influence on Korean economy which has a poor level of environment industry, while they enlarge the market for environment industry all over the world. Thus, it is necessary for the Korean economy to positively participate in the relative world market and to compete with advanced countries. In order to survive in the competing world market, and overcome a variety of, we suggest some development strategies for environment industry as follows; First, we must change the existing industrial structure into advanced one which utilizes atomic energy, water power, tidal plant, solar power, LNG, and so on. Second, we must increase R & D investment for environment industry to catch up with industrialized contries' high-tech and know-how. Third, we must help our own environment industry grow steadily and finally survive independently with competitiveness. Fourth, we need to increase financial support which is given to the domestic environment industry that is still vulnerable. Fifth, we have to induce economic agents to pay close attention to environmental hazards through various means available. As a result, the increasing tendency of environment-trade interdependency argument in the major international organizations will enlarge the world environment market. Thus Korean economy, first of all, has to adjust the existing backward industrial structure into advanced one not to lose domestic market, and finally to take advantage of the big world market by actively participating in the related trade issues.

이산 웨이브릿 변환을 이용한 현장타설 말뚝의 충격응답파형 분석에 관한 연구

김진후,김성보 東亞大學校 建設技術硏究所 2009 硏究論文集 Vol.32 No.2

Waveforms obtained by Impulse Response (IR) method were analyzed for integrity test of cast-in-place piles. We proposed a new flowchart for data processing, which includes generating reflectivity function and discrete wavelet transform (DWT) of the function. Analysis of approximate and details coefficients of the DWT, and the reflectivity function itself provide good measures for integrity test of cast-in-place piles. We found a fault in the pile by proposed analysis technique, which had not been found by the conventional analysis.

포도의 안토시아닌

김성복,이창후,한동현 高麗大學校 自然資源科學硏究所 1996 自然資源科學硏究 Vol.4 No.-

MIN 모듈을 갖는 Hidden Markov Model의 학습 방법에 관한 연구

김대극,이정주,정호균,이상희 강원대학교 정보통신연구소 2001 정보통신논문지 Vol.5 No.-

In this paper, we propose the HMM with the MIN module. Because initial and re-estimated variance vectors are important elements for performance in HMM recognition systems, we propose a method which compensates for the mismatched statistical feature of training and test data. The MIN module is an element of the generalized learning vector quantization (GLVQ) network, which generalizes learning conditions of LVQ and minimizes errors of the cost function given to generate optimized reference vectors. The proposed hybrid HMM/MIN module is a unified network in which the observation probability in the HMM is replaced by the MIN module neural network. Two kinds of experiments were performed to compare the performance of the proposed HMM and the conventional HMM.

시추공 탄성파탐사에 의한 지층의 전단계수 산출

김진후,정성교 동아대학교 건설기술연구소 1997 硏究報告 Vol.21 No.1

건설 예정부지에 대한 시추공 횡파 하향탐사를 실시하여 얻은 자료에 대한 역산을 수행하여 지층의 횡파속도와 전단계수 프로파일을 구했다. 시추공 횡파 하향탐사는 평판 측면타격에 의한 신호 발생원과 시추공 내에 설치한 3성분 수진기로 수행되었으며, S/N비를 높이기 위하여 3회에 걸쳐 신호를 종합(stacking)하였다. 탐사자료의 역산은 Marquart 알고리즘을 사용하였으며, 산출된 인장에 대한 분산(variance), 분해능 매트릭스(resolution matrix) 및 상관관계 매트릭스(correlation matrix)를 구하여 해석 결과에 대한 분석을 시도하였다. 인자 분석을 통해 볼 때 역산을 통해 얻은 결과는 유일해로 추정되며, 대상지역의 횡파속도는 0.41~0.98㎞/sec 범위이다. 횡파속도와 밀도를 이용해 얻은 지반의 전단계수는 0.34~2.28GPa 범위로 산출되었으며, 대상지역 중앙 하부지층에 심한 파쇄대의 존재 가능성을 보이고 있다. The downhole shear-wave survey data were collected at the construction site, and the shear-wave velocity and shear modulus profiles were obtained through the inversion of the data. In the downhole shear-wave survey shear-waves were generated by plate striking, and the signal, which was stacked 3 times, was detected by 3-component geophone installed in tile borehole. The Marquart algorithm was used for inversion process, in which variances, resolution matrix, and correlation matrix were calculated for analyzing qualify of parameters determined. The analysis of parameter determination indicates that the parameters obtained are the unique solutions, and the shear-wave velocities are in the range of 0.41∼0.98km/sec. The shear modulus obtained from shear-wave velocity and density profile was 0.34∼ 2.28GPa, and the shear modulus of the lower strata in the central part of the study area indicates that a fracture zone may be developed in this site.