KAL기 추락에 의한 대량재해의 개인식별

강신몽,이원태,고영창,최상규,김윤희,이홍석,서재관,윤중진,이혜경,최득린,김종열,윤창육,변명식,이장홍 大韓法醫學會 1991 대한법의학회지 Vol.15 No.2

Individual identification is an important part in medicolegal field especially in mass disaster. At July, 27, 1989, KAL KE-803 was crashed on landing at Tripoli International Airport, Liba. The plane was caught in fire and sixty eight Koreans were sacrified. The majority of victims were severely charred and injured. The authors examed all dead bodies and successfully identified all the cases through visual, anthropological, odontological, radiological and pathological methods including fingerprint and blood typing.

AE 신호를 이용한 회전형 압축기의 이상상태 감시

이감규,정지홍,김전하,강명창,김정석 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.5

The compressor has one of important roles in refrigeration cycle and it determines refrigeration efficiency and quality. This paper aims to monitor rotary compressors for room air conditioners by using Acoustic Emission(AE) technique. The reliability of rotary compressors has been evaluated through visual inspection on them after long term test. This paper describes methods for acquisition and processing AE raw signal to monitor the state of rotary compressor. A detecting method of abnormal compressor in real time is suggested and special-purpose monitoring system which can be applied to automatic manufacturing line is developed using one-chip microprocessor at low cost.

STS 304 스테인리스강의 플라즈마 페이스트 침붕처리에 관한 연구

李聖道,李贊揆,孫明淑,尹在弘,許聖康 國立 昌原大學校 産業技術硏究所 1997 産技硏論文集 Vol.11 No.-

Various surface properties of boride layer formed by plasma paste boronizing were examined. A boride layer of flat structure was formed on the STS 304 stainless steel substrate by plasma paste boronizing treatment with several different temperature from 1023K to 1223K under gas mixture of Ar/H₂: 2/1(vol.%). The paste was composed of 30wt% boron and 70wt% borax. The properties of boride layer were evaluated by micro vickers hardness tester, SEM, EPMA, and corrosion tester. Metallographic cross section of the borided specimen was consisted of the boride layer, Ni rich layer, Cr rich layer, and matrix structure. It was found to form boride layer in a short time to conventional boronizing methode. In XRD analysis of boride surface, various peaks such as FeB, Ni₃B and CrB were presented. Especially, the peak of CrB was more intensive than other peaks. Activation energy for the formation of boride layer was found to be 123kJ/mol which is lower than the conventional boronizing treatment. The microhardness of these boride layers were in the range of HV 1800∼2000. However, from the results of anodic polarization curve in 1M H₂SO₄solution on the borided specimens, it is found that the corrosion resistance is improved by boronizing treatment. Primary current density is, however, increased with the Boronizing temperature.

강의 수소취화에 대한 국부영역에서의 수소의 거동(Ⅰ) : 지연파괴의 수소집적에 미치는 응력 및 소성변형의 영향

이영호,이진우,배명일,고준빈,이규천 충남대학교 산업기술연구소 2001 산업기술연구논문집 Vol.16 No.1

Hydrogen embrittlement cause decrease of it's mechanical properties during hydrogen dissolved in steels. Many mechanisms of hydrogen concentration researches have done, but it is not clearly known yet. In this study the effect of plastic deformation and external stress on mechanism of hydrogen concentration by high temperature hydro-genation treatment were investigated. The main results are as follow : 1)For short time fracture process, a defect rate of chemical potential energy is an important factor on hydrogen concentration for delayed fracture of steel processed with high temperature hydrogen. 2)For long time fracture process, the important element is long range diffusion of hydrogen due to the rate of effective hydrogen density and plastic deformation. 3)hydrogen concentration as plastic deformation vary in proportion to slope of plastic deformation. 4)Hydrogen concentration due to the effect of external stress, but this effect is limited in short range. 5)External stress is an acceleration element for delayed fracture of steel.

정량적 묘사분석을 이용한 다양한 전분 gel의 관능특성

이규희,강현아,신명곤 우송대학교 부설 산업연구원 2002 산업연구 Vol.4 No.1

전분은 특성상 수분과 가열에 의해 호화 되고, 호화 후 온도가 낮아지면 젤을 형성하는 특성을 갖고 있다. 전분의 이러한 특성을 이용하여 제조된 식품으로는 "묵"을 들 수 있겠다. 본 실험에서는 소비자 기호도의 만족을 위하여 여러 가지 전분을 이용하여 젤을 제조하여 정량적 묘사 분석을 통해 관능특성을 비교하였다. 결과로는 옥수수 전분젤이 다른 전분젤들과 비교하여 가장 단단하며 탄력 있는 젤을 형성함을 알 수 있었고, 다음은 도토리 전분 젤이 단단하고 탄력 있는 젤을 형성하였으며, 고구마와 감자전분의 단단한 정도는 통계적으로 유의차가 없음을 알 수 있었다. Starches has been mainly used for making gel and capturing the small molecular weight substance. Especially, the foods using the gelling properties of starch have famously known as "Mook" in Korea. The sensory characteristics for the starch gel properties are need to study for the confidence of consumer acceptance. In this study, the gels which obtained various starch such as sweet potato's starch, potato starch, corn starch and acorn starch were evaluated the sensory attributes using quantitative descriptive analysis(QDA). As the results, 8 terms were described, and the most rigid and springiness gel was the corn starch gel, the second was acorn starch gel, and the starch gels between sweet potato and potato were not shown significance.

경직성 뇌성마비 환아에서 선택적 후근 절제술 후 운동기능의 변화

이소영,최인성,한재영,정주찬,위정선,오명신,박승진,이삼규,김재휴 全南大醫大 2001 전남의대학술지 Vol.37 No.1

JavaRmi 분산객체를 위한 이벤트 서비스의 설계

이명준,김현규,김규완 울산대학교 1999 공학연구논문집 Vol.30 No.1

대규모의 분산응용시스템은 일반적으로 복잡한 이벤트 전달과 함께 빈번한 상호작용을 필요로 하는 구성요소들로 이루어져 있다. 다중 이벤트 전달을 지원하는 상호작용 기법은 오류없이 구현하기 힘드므로 보다 안정적인 분산응용시스템을 효율적으로 지원하기 위해서는 이벤트의 다중처리를 체계적으로 처리하기 위한 서비스를 개발하는 것이 바람직하다. 본 논문에서는 Sun 의 JavaRmi 분산객체 환경에서 다중 이벤트 전달을 체계적으로 지원하기 위한 JavaRmi 이벤트 서비스의 설계에 대하여 기술한다. 설계된 JavaRmi 이벤트 서비스는 체계적인 인터페이스와 병행성 제어를 제공하면서 이벤트 채널 팩토리와 이벤트 필터의 개념을 지원한다. A large distributed application generally consists of multiple components which require frequent interactions with complex event transfers. Since the interaction mechanism supporitng multiple event transfers is difficult to implement correctly, it is desirable to develop a service for the systematic multiple event transfers to support a stable distributed application in an effective manner. In this paper, we describe a design of JavaRmi Event Service for systematic multiple event transfers on Suns JavaRmi distributed object environment. The JavaRmi Event Service includes the concept of event service factory and event filter with well-defined interfaces and concurrency control.

천안지역 대학생의 흡연군과 비흡연군간의 충동성,우울 및 불안정도 비교 연구

강영규,김현우,백기청,이경규,임명호 大韓神經精神醫學會 2002 신경정신의학 Vol.41 No.6

연구목적 : 본 연구에서는 근래에 와서 건강을 위협하는 중요한 변인으로 강조되고 있는 흡연이 어떤 심리적 요인과 관련이 있는지 검증하고자 하였다. 여러 가지 심리적 변인 중 아마도 흡연과 가장 관련이 높을 것으로 생각되는 우울, 불안 그리고 충동성 정도가 흡연자와 비흡연자 간 뿐 아니라, 같은 흡연자라 할지라도 성별에 따른 차이가 있는지 검증하고자 하였다. 이러한 연구는 흡연을 예방하고 치료하는 데 있어 다른 물질중독의 경우와 마찬가지로 우울, 불안 및 충동성 등의 심리적 요인의 고려가 중요한 변인으로 간주되어야할 지를 알 수 있는 지표가 될 수 있을 것이다. 방 법 : 이 연구는 크게 BIS-11의 신뢰도 검증을 위한 예비연구와, 흡연과 정신건강과의 관계를 알아보기 위한 본 연구로 대별될 수 있다. 예비연구의 대상으로는 BIS-11을 한글로 번역하고 그 신뢰도를 측정하기 위해 일반인 187명을 대상으로 한 설문작업이 이루어졌으며 이중 30명에 대해서는 1주일 간격의 검사-재검사의 과정을 거쳤다. 본 연구의 연구대상으로는 천안 소재의 대학생 총 550명을 대상으로 하였다. 본 연구에 사용된 설문지는 ① 사회인구학적인 변인에 대한 문항들 ② Barrat 충동척도 임시 번안판 ③ Beck의 우울증 척도 한글판(Beck Depression Inventory : BDI한글판) ④ 상태-특성 불안척도 한글판(State-Trait Anxiety Inventory) 중 특성불안 척도 이렇게 총 4개의 부분으로 구성되었다. 통계분석은 SPSS Win 9.0을 이용하였으며 주로 이원변량분석법(Two-Way ANOVA)과 independent T-test 등을 이용해 분석하였다. 결 과 : 흡연군이 비흡연군에 비해서 'Barrat 충동척도 임시 번안판' 총 점수, 그 하위 3개요인 중 즉흥성(제 2 요인), Beck의 우울증 척도 점수 그리고 이들을 합한 '불안-우울-충동성 표준종합점수합'이 유의미하게 놓았다. 또한 여성이 남성에 비해 특성불안 점수, BIS-11 총점수, 그 하위 3개요인 중 즉흥성(제 2 요인), 운동성(제 3 요인), Beck의 우울증 척도 점수 그리고 이들을 합한 '불안-우울-충동성 표준화 점수의 합'이 유의미하게 높았다. 또 성별 및 흡연여부의 상호작용효과가 있는 변수로는 'Barrat 충동척도 임시 번안판' 총점수, 그 하위 3개 요인 중 즉흥성(제 2 요인), 운동성(제 3 요인), Beck의 우울증 척도 점수 그리고 이들을 합한 '불안-우울-충동성 표준화 점수의 합'이 있었다. 이러한 상호작용 효과를 검증하기 위하여 남성 흡연-비흡연군, 여성 흡연-비흡연군을 비교한 결과 남성의 경우 흡연군과 비흡연군 사이에 이들 모든 척도에서 통계적으로 유의미한 차이가 없었으나, 여성의 경우 흡연군이 비흡연군에 비해 이들 모든 영역에서 유의미하게 높은 점수를 보였다. 결 론 : 이상의 연구결과는 그것이 원인이지 결과인지는 알 수 없으나 흡연자가 대체로 우울, 불안, 충동성 등의 심리적 영역에서 문제가 있으며 특히 여성 흡연자의 경우 그 정도가 심해 흡연의 예방 및 치료에 있어 단순히 신체적 문제만을 부각시킬 것이 아니라 이러한 심리적 요인을 고려해야 함을 시사한다 하겠다. Objective : The study aims to determine whether smokers are more likely to have depression, anxiety and impulsiveness than nonsmokers. In addition, the difference between male and female smokers in terms of psychiatric symptoms are also to be looked at, particularly considered that there is still social stigma against female smokers in Korea. Ultimately, conclusions of the report can decide whether the psychiatric factors should be regarded important in treating smokers and prevention of smoking. Methods : The study is composed of two parts, a preliminary study to check confidence level of BIS-11 and the main study to examine relations between smoking and mental health. For the preliminary study, BIS-11 was translated into Korean to check its confidence level by interviewing 187 people, among whom 30 respondents had gone through an examination and a reexamination with one-week interval. Respondents of the main study were total 550 college students in Cheonan area. The questionaires were categorized into five parts ; 1) sociodemographic variants 2) temporary Korean version of Barrat Impulsiveness Scale(Version 11 : BIS-11) 3) Korean version of Beck Depression Inventory 4) trait anxiety scale from Korean verison of State-Trait Anxiety Inventory. SPSS Win9.0 has been run to analyze the outcome mainly using Two-Way ANOVA and independent T-test. Results : Difference between genders/smokers and nonmokers : The overall score of BIS-11, one of its three subcategories : impromptuness, Beck Depression, and the combined score for multi scales were significantly higher among smokers. Female smokers showed significantly higher scores than male smokers in trait anxiety, overall BIS-11, and two of its three subcategories(indiscretion and motor), Beck Depression and the combined score for multi scales. Overall BIS-11, two of its three subcategories(indiscretion and motor), Beck Depression and the combined score for multi scales were meaningful variants in comparison between male smokers/nonsmokers. While there was no significant difference between smokers and nonsmokers among men, significant difference was identified among women who showed higher scores across all variants. Conclusion : Although it is not sure whether it is the result or the cause of smoking it is confirmed that smokers have problems in psychiatric areas such as depression, anxiety, and inpromptuness, particularly among female smokers to greater degree. Therefore, it strongly implies that psychiatric aspects should be considered in preventing and treating severe smoking problems of female smokers along with physical ill effects.

에너지와 인근 피치 간에 유사도를 이용한 잡음레벨 검출에 관한 연구

강인규,이기영,배명진 한국음성과학회 2004 음성과학 Vol.11 No.3

Human has average pitch-level when speak naturally. That is "Habitual pitch level". However, if noise added at speech, the pitch-wave is changed irregularly. We can estimate noise level of speech by using this point. This paper calculates energy level of the input speech, pitch period from of above limited energy level by NAMDF (Normalized Average Magnitude Difference Function) method, after cut each frame by pitch period unit, and propose a method that estimate noise level through closed pitch of input speech.

탄수화물 부하식이요법시 蔘朮健脾湯 투여가 시합 전 후 장거리 달리기 선수의 뇨중 대사 성분 변화에 미치는 영향

韓榮奎,李鳴種 동국대학교 한의학연구소 2000 東國韓醫學硏究所論文集 Vol.8 No.2

이 실험의 목적은 탄수화물 부하식이요법시의 삼출건비탕 투여가 달리기 선수의 뇨중 대사성분변화에 미치는 영향에 대해 관찰 연구한 것이다. 탄수화물 부하식이시 參朮健脾湯 투여는 전해질 대사 관련 변인에 있어서 Na^(+), Cl^(-), K^(+), Ca^(++)에 유의성 있는 영향을 미쳤으며, 이는 세포막 투과성의 변화를 의미하는 것으로 Na^(+)-K^(+) pump의 활성도가 증가하여 운동수행능력을 향상시킬 것으로 기대되나 추후 전해질 대사와 관련하여 renin, aldosterone 등의 호르몬 분비 기전에 관해서도 지속적인 연구가 진행되어야 할 것으로 사려된다. Objective This experimental study was designed to investigate effects of Sam-chool-gun-bi-tang administration during carbohydrate loading diet to long distance runners on changes of the urine metabolic responses. Materials and Methods All subjects were divided randomly with two groups, Sam-chool-gun- bi-tang administration Group (N=5) and control group (N=5) and attended on domestic marathon race. The urine samples were collected by 15ml conical tube at rest, a day before race, immediately after race, a day after race. These samples were used to analyze for the factors of the change on metahlic responses. At First, the factors of the routine urine test were checked; RBC, WBC, glucose, protein, ketone, bilirubin, urobilirubin. Next, the factors on the changes of the electrolyte metabolism and creatinine were checked; Na , Cl^{-}, K^{+}, Ca, Creatinine. Results 1. Urine RBC, WBC, glucose, protein, ketone, bilirubin, urobilirubin were all denoted negatively(-). 2. Urine pH response in Sam-chml-gun-bi-tang administration group was shown significant difference between two groups at immediately after race. 3. Urine Na' response in Sam-chool-gun-bi-tang duministration group was shown significant difference between two groups at immediately after race. 4. Urine K response in Sam-chool-gun-bi-tang administration group was shown significant difference between two groups at immediately after race and a day after race. 5. Urine Cl^{-} response in Sam-chml-gun-bi-tang adrmnistration group was increased at immediately after race, but was not shown significant difference between two groups. 6. Urine Ca- response in Sam-chool-gun-bi-tang adrmnistration group was decreased gradually, but was not shown significant difference between two groups. 7. Urine Creatinine response in Control group was decreased significantly at immediately after race, but was not shown significant difference between two groups. Conclusion According to the above results, it was shown that Sam-chool-gun- bi-tang adrmnistration had the positive effects on changes of the urine matabolic responses during carbohydrate loading diet to the long distance runners.