Trichloroethyene 처리한 흰쥐의 이물질 대사효소의 활성도에 관한 연구

김기웅,강성규,최병순,이종성,김종성,문영한 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.2

Trichloroethylene(TRI) is one of the most widely used organic solvent in many industries. It is used a degreasing agent, extract and dillution solvents. TRI is metabolized by liver microsomal cytochrome P450 to reactive intermediates, which are considered responsible for its hepatotoxicity. Cytochrome P450 is a key enzyme in the first step of TRI metabolism resulting in chloral hydrate(CH) formation, which is a rate-limiting step in TRI metalbolism. This study was performed to find change of hepatic cytochrome P$%) levels and of electron transport system for P-450 dependent reaction. Injections of TRI were done to the male Sprague Dawley rats(mean body wights, 170±10g) in corn the dosage of 150,300,600 ㎎/㎏ for 2 days. The results of experiments are following: 1. The contents of microsomal protein, cytochrome P450 and b5 are tended to be decreased with increasing amount of TRI, but not signifcantlly(p>0.05). 2. The activity of NADPH-cytochrome P450 reductase is slowly decreased by increasing amount of TRI, but not significantlly(p>0.05). On the other hand, the activity of NADH-b5 reductase is increased with increasing amount of TRI(p<0.05). 3. The activity of 7-ethoxyresolufin O-deethylase did not show any critical changes(P>0.05). This result suggests that the inductive pattern of TRI may not be related to P 450IA1 and P450IIB.

우리나라 湖水의 Chlorophyll-a 濃度와 無機營養鹽類 사이의 相關性 分析

金東植,方起雄 大田工業大學 1992 한밭대학교 논문집 Vol.9 No.2

ABSTRACT Summer mean data derived from various survey reports on Korean lakes since 1980 were used in order to relate chlorophyll-a concentration to inorganic nutrients and to find limiting nutrients to phytoplankton growth. From the analysis of data, POY4-P is an important limiting nutrient in Korean lakes. When the ratio of Inorganic-Nitrogen/POY4-P was greater than 17 and POY4-P concen- tration was less than 60mg/m3, the limiting nutrient was POY4-P, especially. A simple regression of chlorophyll-a concentration to inorganic nutrients showed that the models were log(Ch. -a)=0.563 log (POY4-P) -0.024 and log(Chl.-a)=1.377 log(Inorgan.-N)-3.225. Correlation coefncients of models in Korean lakes were Iower than those in foreign natural lakes. These reasons might be related to Iow transparency caused by SS from inflowing stream and short hydraulic retention time in Korean lakes. Summer mean data derived from various survey reports on Korean lakes since 1980 were used in order to relate chlorophyll-a concentration to inorganic nutrients and to find limiting nutrients to phytoplankton growth. From the analysis of data. PO_4 -P is an important limiting nutrient in Korean lakes. When the ratio of Inorganic-Nitrogen/PO_4-P was greater than 17 and PO_4-P concen-tration was less than 60mg /m^3, the limiting nutrient was PO_4- P, especially. A simple regression of chlorophyll -a concentration to inorganic nutrients showed that the models were log(Ch. -a)=0.563 lo9(PO_4-P)-0.024 and log(Chl.-a)=1.377 log(Inorgan.- N) -3.225. Correlation coefficients of models in Korean lakes were lower than those in foreign natural lakes. These reasons might be related to low transparency caused by SS from inflowing stream and short hydraulic retention time in Korean lakes.

국내외 테크노파크 추진 동향

김기웅,이신수 한국항공대학교 경영연구소 2002 경영연구 Vol.9 No.1

테크노 파크의 조성 목적은 대학과 연구기관, 기업간의 유기적인 협력을 통해 산업수준을 향상시키고 기술집약형 산업을 발전시키는 것이다. 본 연구에서는 테크노파크의 추진방향을 제시하였는데, 테크노파크는 지역기술 혁신 시스템의 실질적 중심이 되어야 하고, 전국적으로 종합연계하여 국가 기술혁신 시스템의 기본골격을 형성해야 한다. 이를 위한 세부 추진 과제로는 테크노파크의 기술 혁신기능 강화 추진 주체와 전문성 확보, 선진운영기법의 도입, 전문 평가 관리 시스템의 구축, 기술혁신을 위한 실질적 유인조치의 확대 등을 들 수 있다. Purpose for promoting of Technopark is promoted the industrial level through organic cooperation of an university and a research institution, between enterprise and is growed a technology-intensive industry. In this thesis, we proposed a promotive aim of Technopark. The TechnoPark must be took the practical lead of Regional Technology Innovation System and must form a fundamental structure of National Technology Innovation System. The task of detailed promotion may suggest the expansion of promotive induction management for technology innovation, construction of expert evaluation management system, introduction of advanced operation techniques, ensure of expertness of promotion leader and the intensification of technical innovation skill.

정지영상 압축을 위한 이진적응에 관한 연구

김향태,위승정,정재영,최호진,최봉한,이웅기 조선대학교 통계연구소 1999 統計硏究所論文誌 Vol.1 No.1

대용량 저장장치의 출현, 컴퓨터 성능 및 초고속 망의 급속한 성장, 디지털 필름스캐너의 성능 향상 및 비용 감소 덕분에 디지털 형태로 영상을 다루기 위한 요구가 점차 증대되는 추세이다. 디지털 영상은 항상 고품질을 유지해야 하므로 화소 당 비트를 높게 할당하는데 이때 소요되는 방대한 비트 수를 효과적으로 감소시켜 저장용량 및 대역폭을 줄이기 위해서는 효율적인 영상 압축이 요구된다. 본 눈문은 디지털 영상의 압축을 위한 새로운 이진적응 방식을 제안한다. 먼저 변환된 예측오류를 얻기 위해 적응예측을 하고, 모델 템플리트로부터 적당한 예측오류 값 영역을 하나의 context영역이 되도록 하는 방식으로 부호화에 적절한 수의 context 영역을 결정한다. 그리고 부호화 효율을 개선하기 위해 개별적인 context 영역에서 부호화 될 예측오류가 나타날 확률을 근접하게 추정한 후, 고 빈도 예측 심볼 집합을 이진적응에 적용하여 부호화의 효율을 개선한다.

신경망 알고리즘을 이용한 그래프 레이아웃

김향태,이웅기 조선대학교 기초과학연구소 1999 自然科學硏究 Vol.22 No.1

This paper proposes a neural network algorithm for minimizing edge crossings in drawings of nonlinear graphs. This is very important subproblem encountered in graph layout. The algorithm finds either the minimum number of crossings and provides a linear embedding realizing the number of crossings found. The parallel time complexity of the algorithm is O(1) for a neural network with n^2 processing elements, where n is the number of vertices of the graph. This paper proposes results from testing a sequential simulator of the algorithm on a set of nonlinear graphs and compare its performance with the heuristic of Nicholson.

물질남용 치료프로그램 후 재범여부에 대한 예비적 추적조사 연구

김현수,조선미,오은영,임기영,정영기,윤웅장,이영미 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.6

연구목적: 본 연구는 물질사범에게 시행되는 수강명령 프로그램의 효과를 재범률을 중심으로 살펴보고자 한 것이다. 방 법: 이 연구의 대상집단은 보호관찰소에서 의뢰받은 물질남용자집단이다. 이들은 법원으로부터 보호관찰, 수강명령, 치료명령, 사회봉사 등을 부과받았다. 총 104명의 대상자집단을 치료프로그램을 이수한 수강군과 비수강군으로 나누었으며 이들에 대한 재범률을 조사하였다. 결 과: 프로그램을 이수한 수강군이 비수강군에 비해 재범률이 낮았다(p<.05). 또한 단기 수강군과 장기수강군의 재범률의 차이를 조사하였는데 대상자 집단의 수가 적기 때문에 장기 수강군의 효과가 통계적으로 입증되지는 않았다. 결 론: 우리는 물질남용자에 대한 정책이 보다 교육적으로 변화할 것을 본 논문을 통하여 제시하려 하였으며 정부 및 법무부는 물질남용자에게 교육과 치료를 제공해주어야만 한다. Objectives: Using recidivism rate, we investigated the outcome after our substance abuse treatment program had been implemented. Methods: Our target population was substance abuse criminals referred by probational office. They either received the parole and probation order, treatment order or social service order from the court. We divided 104 substance abuse criminals into treatment group and non-treatment group. We examined their recidivism rate. Results: We reached a conclusion that treatment group had lower recidivism rate than non-treatment group(p<.0.5). We examined the effectiveness of short-term and long-term programs. However, no effectivess of long-term program was found because the sabject number was too small. Conclusion: We suggest that the strategies for substance abuse should be changed to more educative ones. The Government and Ministry of Justice must provide education and treatment to the substance abuse criminals.

산란 초음파의 주파수 특성을 이용한 단일 섬유 복합재료의 인터페이즈 평가법 개발

김웅기,임현준 韓國非破壞檢査學會 1999 한국비파괴검사학회지 Vol.19 No.2

본 연구에서는 산란 초음파의 주파수 특성을 이용하여 단일 섬유 복합재료내 인터페이즈의 물리적 성질을 측정하는 방법을 제안하고, 그 가능성을 이론적으로 고찰하였다. 그 결과, 주파수 영역에서 나타나는 산과 골의 위치 및 크기가 인터페이즈의 성질에 의해 상당한 영향을 받음을 보임으로써 이 방법의 타당성을 확인하였다. 산란 초음파의 주파수 거동은 산란체의 공명과 관련되어 있지만, 공명 피크가 음향파의 경우만큼 두드러지지 않아 기존의 음향 공명산란이론을 바로 적용할 수 없었다. 산란 초음파의 주파수 특성으로부터 인터페이즈의 성질을 구하는 역문제의 해법으로서 신경회로망을 구성하였으며, 이를 사용하면 대부분의 경우 인테페이즈의 성질을 상당히 정확하게 추정할 수 있었다. A method is proposed to characterize single-fiber composite interphases from the frequency-domain characteristics of scattered ultrasonic waves, and its feasibility is investigated theoretically. It has been shown that the locations and magnitudes of the peaks and valleys in the frequency domain are affected significantly by the interphase properties, which may indicate the effectiveness of the proposed method. Although the frequency-domain behavior is basically associated with the resonance of the fiber-inter phase system, it is not dominantly affected by the scatterer's resonance unlike that in the case of acoustic wave scattering. Therefore, the conventional acoustic resonant scattering theory is not directly applicable to the characterization of composite interphases. In order to solve the inverse problem of predicting the interphase properties from the frequency-domain characteristics of the ultrasonic scattered waves, an artificial neural network has been constructed. This approach has demonstrated reasonable accuracy in most cases considered in this study.

취학전 아동들의 체격 및 기초체력에 관한 비교 연구

김태운,안병철,고기준,한재웅,이재규 釜山大學校 附設 體育科學硏究所 1997 體育科學硏究所 論文集 Vol.13 No.-

The purpose of the present investigation was to compare and analyze the physique and physical fitness for children(boys:876, girls:784, age: 7 yrs), and to correlation between physique and physical fitness 5 items. The measurement items of physique and physical fitness were height, weight and sitting trunk flexion, 50M run, standing long jump, foot balance, flexed arm hang test. The statistical analysis were calculated to mean and standard deviation for all measurement values and correlation coefficients between physique and physical fitness 5 items for children using SPSS/PC+ statistical package(α=.05). The conclusion of the present investigation was as follows; 1. Physique 1) In height, boys(118.31 ±23.92cm) has been significantly higher than girls(116.11 ±4.72cm)(P<0.05). 2) In weight, boys(22.31 ±3.54kg) has been significantly higher than girls(21.17 ±3.31kg)(P<0.01). 2. Physical fitness 1) In sitting trunk flexion, girls(11.67 ±4.37cm) has been significantly higher than boys(9.97 ±4.48cm)(P<0.01). 2) In 50M run, boys(12.58 ±1.30sec) has been significantly faster than girls(13.30 ±1.59sec)(P<0.01). 3) In standing long jump, boys(112.99 ±16.36cm) has been significantly higher than girls(98.94 ±16.24cm)(P<0.01). 4) In foot balance, girls(30.90 ±19.66sec) has been significantly higher than boys(26.65 ±19.25sec)(P<0.01). 5) In flexed arm hang, boys(8.68 ±7.94sec) and girls(8.58 ±8.11sec) had no significant difference. 3. Correlation between physique and physique and physical fitness 1) In correlation between height and physical fitness, boys were no little correlation in 5 items all, and girls and total were significantly low correlation(P<0.01) between height and 50M run, standing long jump. 2) In correlation between weight and physical fitness, boys and girls all were significantly low correlation between weight and standing long jump(P<0.05), flexed arm hang(P<0.01), and total were significantly low correlation between weight and 50M run(P<0.05), standing long jump(P<0.01), flexed arm hang(P<0.01).

여중생들의 신체조성과 심폐기능 및 심박수 회복율에 관한 비교 연구 : 비만 여중생과 정상 여중생을 중심으로

김태운,신군수,김종인,이광무,김성헌,안병철,고기준,한재웅,이재규 釜山大學校 附設 體育科學硏究所 1996 體育科學硏究所 論文集 Vol.12 No.-

The purpose of this study was to compare and analyze the relation between body composition, cardiorespiratory functions and percent heart rate recovery in obese and normal middle school female students. We used total of 12 middle school female students(3rd grade) as subject and devided them into two groups : The measurement items of cardiorespiratory functions were HR, VE, RQ, VO₂, VCO₂, VO₂/kg, O₂pulse, VE/VO₂, VE/VCO₂, before and after treadmill exercise load. The statistical analysis were M±SD and t-test for groups(α=.05) using ?? statistical package. The conclusion of this study was as follows ; 1. In 5 items(FM, LBM, %Fat, TBW, BMI) all of body composition, obese group has been significantly higher than normal group(P<0.01). 2. In heart rate and VO₂ of resting(before exercise loads) cardiorespiratory functions, normal group has been significantly higher than obese group(P<0.05). 3. In VEmax of cardiorespiratory functions after exercise loads, obese group has been significantly higher than normal group(P<0.05), and in VO₂max, obese group has been significantly higher than normal group(P<0.01). 4. In 1, 3, 5 minute percent recovery all of percent heart rate recovery after exercise loads, normal group has been higher than obese group but there was no statistical significant difference.

주체사이성과 소통의 윤리학

김연경,이기웅 서울대학교 러시아연구소 2006 러시아연구 Vol.16 No.1

в данной статье предпринята попытка представить этическую перспективу в акте коммуникации. Исходным пунктом исследования служит этика как долженствование, развернутая в 'философии поступка' раннего М. Бахтина: подчеркивается ответственность и конкретность этического поступка человека, в чем и видится доказательство существования 'я' - единственного и неповторимого бытия. Однако, при всей справедливости этика как долженствование имеет недостаток, поскольку здесь упущено понятие 'другой' как также атктивный субъект в коммуникации. При рассмотрении коммуникацивной этики более гибкий подход предлагает т. н. 'философия другого': предметом рассмотрения становятся понятие 'лицо' И. Левинаса, этико-эстетическое исследование 'автора и героя', представленное Бахтиным, в частности мысль Достоевского о свободе и т. д. В тот момент, когда передо мной появляется 'другой' в виде искаженного страданием лица и приказывает мне исполнить свою свободу, то я ставлюсь подсудимым перед другим именно из-за моей свободы и таким образом требуется этический акт. Переходя от антитезы 'я и другой' к интерсубъективности, мы встречаемся с 'событием' бытия и жизни, одним из главнейших понятий в системе мышления Бахтина, также 'ребенком' Левинаса. Этика в коммуникацивном акте должна, хотя бы отчасти, освободить от подавленной нудительности, а отразить вечную событийность как сущность человека и жизни. И потому особый акцент делается на вечном возвращении: превозойти прошедшее, а стремиться к настоящему и будущему. Только с такой точки зрения можно надеяться на новую перспективу коммуникации с другими.