雪嶽山 신갈나무林의 植物社會學的 硏究

이우철,白元基,金文基 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

A phytosociological study on the Mongolian oak forest was carried out on Mt, Sorak by the Z-M method. The Mongolian oak forest was classified into one oder, two alliances, one association and three communities : Rhododendro-Quercetalia mongolicae Kim 1990 Lindero-Quercion mongolicae Kim 1990 Vaccinium hirtum v. koreanum-Quercus mongolica Community Lespedeza maximowiczii-Quercus mongolica Community Pino koraiensis-Quercion mongolicae Kim 1992 Typical community Lichno-Quercetum mongolicae Kim 1992 Total vascular plant species in investigatied sites consisted of 193 taxa, and their life-farm composition Was H-D_(1)-R_(5)-e type.

컴퓨터 내장형 비파괴검사용 초음파탐상기 개발

김양래,이원흠,김선형,이순흠,최관순,김진구 韓國非破壞檢査學會 1997 한국비파괴검사학회지 Vol.17 No.2

현재 널리 사용되고 있는 비파괴검사중의 하나인 초음파탐상검사(ultrasonic testing)는 교량, 발전소, 석유화학프랜트 및 중공업분야 등에 사용되는 각종 구조물의 사용전ㆍ중검사에 폭넓게 응용되고 있으며, 구조물의 안전관리와 품질관리에 필수적으로 요구되고 있다. 또한, 이들 구조물에 존재하는 결함에 대한 정량적 평가 및 검사 데이타의 해석에 많은 연구가 진행되고 있다. 기존의 초음파탐상검사에 사용되는 휴대용 초음파탐상기의 단점을 보안하기 위해 컴퓨터 내장형 초음파탐상기가 선진국에서 개발되고 있으며 다양한 소프트웨어의 사용에 따른 검사 신뢰도가 향상되고 있다. 본 연구는 컴퓨터 내장형 초음파탐상기를 구성하고, 이를 콘트롤할 수 있는 프로그램, 검사결과의 저장 및 신호 처리 해석이 가능한 소프트웨어를 개발하였다. Ultrasonic testing is one of the most widely used method of nondestructive testing for pre-service inspection(PSI) & in-service inspection(ISI) in structures of bridges, power plants, chemical plants & heavy industrial fields. It is very important to estimate safety, life, quality of structures. Also, a lot of research for quantities evaluation & analysis inspection data is proceeding. But traditional portable ultrasonic flaw detector had been following disadvantages. 1) Analog ultrasonic flaw detector decreased credibility of ultrasonic test, because it is impossible for saving data & digital signal processing. 2) Stand-alone digital ultrasonic flaw detector cannot effectively evaluate received signals because of lack of its storage memory. To overcome this shortcoming, we develop the computer based ultrasonic flaw detector for nondestructive testing. It can store the received signal and effectively evaluate the signal, and then enhance the reliability of the testing results.

결핵성 중이염의 임상적 고찰

박병원,조우령,석상렬,김서규,김명구,권오준,김병헌 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.8

면접조사를 통한 초등학생의 영양교육 실태 및 실천도 조사

오유진,이영미,김정현,안홍석,김정원,박혜련,서정숙,김경원,권오란,박혜경,이은주,성현이 대한지역사회영양학회 2008 대한지역사회영양학회지 Vol.13 No.4

This study investigated the experience and practice of elementary school students on nutrition education. The data were collected from 217 male and female students attending 5-6th grade elementary schools in Seoul and Kyunggi-Do from March to June 2007, interviewing face to face by a nutrition teacher and 3 interns of a nutrition teacher. The results were as follows: 86.5% of the subjects learned about ‘Table etiquette’, ‘Reasons for eating fruits and vegetables’ (78.7%), ‘Food waste and environment’ (72.3%), ‘Healthy snacks’ (55.7%), ‘Food sanitation’ (52.3%), ‘Food culture of foreign countries’ (48.1%). Nutrition education experience was significantly different by gender. A total of 43.5% boys responded that they never learned about ‘basic food preperation’ (p < 0.01). They had learned ‘Nutrients for body’ and ‘Food waste and environment’ in school, ‘Healthy weight loss’, ‘Food culture of foreign countries’, ‘Food circulation’ on television, Most content (‘Table etiquette’, ‘Simple cooking’, ‘Food sanitati n’, ‘Eating behaviors for health’, ‘Reasons for eating fruits and vegetables’, ‘Healthy snacks’) was learned from parents. The practice after nutrition education was higher in ‘Table etiquette’ (2.14), ‘Eating fruits and vegetables’ (2.07) than others compared with education experience. The most reason of non-practice on nutrition information was ‘Troublesome’. In ‘Nutrients for body’, a boy answered ‘Difficult for practice’ 20.0%, a girl answered ‘Difficult to understand’ 32.6%, showing a significant difference between the gender groups (p < 0.001). They remembered the ‘Nutrients for body’ (49.6%), ‘Food sanitation’ (44.5%) because of ‘important content’,‘Basic food preparation’ (40.6%), ‘Food culture of foreign countries’ (36.3%) because of ‘interesting content’, ‘Healthy weight loss’ (52.0%), ‘Eating behavior for health’ (44.5%) and ‘Healthy snacks’ (33.7%) because of ‘need for my health’.

H9c2 심근 세포주에서 외인성 nitric oxide가 허혈에 의한 세포 독성에 미치는 영향

정성구,장현용,김명천,고영관,정주호,배영미,박원서,김대중,유영민,김성수,임성빈 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Nitric oxide(NO) is known to have protective effects on an ischemic heart and to exert triggering effects on ischemic preconditioning. However, the effects of NO during the ischemic period have not been investigated. To investigate the role of exogenous nitric oxide in a model of ischemic heart cell death, we studied the effects of ischemic preconditioning and ischemia in a normal and an ischemic buffer. Methods: Rat cardiac myoblast cells(H9c2) were cultured in a normal and an ischemic buffered medium. For the ischemic culture of heart cells, the cells were cultured in a dessicator with GasPak for 5 hrs. In ischemic preconditioning, the cells were pretreated with ischemic buffer for 5 min and then perfused with normal medium for 30 min. For the measurement of the cytotoxicity, a MTT(3-4-Sdimethylthiazol-2-yl-2,5-diphenyl tetrazolium bromide) assay was performed. A DAPI(4',6-diamidino-2-phenylindole dihydrochloride) staining procedure and a flow cytometry analysis were performed to confirm apoptotic cell death by ischemia. Results: Cell viability, as determined by using a MTT assay, showed that the preconditioned group treated with NO showed more cell death than with the not-preconditioned groups in both normal and ischemic buffers. But, In normal medium and not-preconditioned groups, NO showed protective effect according to the concentrations(100,1000μM) . No treatment with NO produced the different results. In normal medium, the protective effect of ischemic preconditioning was demonstrated, but no protective effect of ischemic preconditioning could be seen in the case of the ischemic buffer. The DAPI staining and flow cytometry analysis of heart cells showed characteristic apoptotic features. Conclusion: NO added in the ischemic phase had deterious effects on heart cells. Ischemic preconditioning was more harmful than ischemia alone. The toxicity of the cells was characteristic apoptosis.

급성 세균성 감염증에 대한 Cefotetan(Yamatetan^ⓡ)의 임상적 효과

김주옥,안원전,박종훈,노흥규,박종우 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.1

Total 20 cases of infectious diseases were treated with Cefotetan at the Dept. of internal medicine, Chung Nam National University Hospital, Dae Jeon, Korea, from January 1985 to April 1985. Among 20 cases, 6 were the patients with acute pyelonephritis, 7 were pneumonia, 2 were acute cholecystitis, 2 were chronic bronchitis, 2 were cellulitis and 1 was lung abscess. The response was good in 16 cases, and poor in 4 cases. The laboratory tests were normal except I which was reversible. (mild elevation of SGOT and SGPT) The side effects were noted in 2 cases, such as skin eruption and drug fever, which were improved with supportive care. Cefotetan was thought to be useful against acute bacterial infections of respiratory, urinary, biliary tracts and cutaneous tissue.

벡터 양자화를 이용한 문장 및 화자 독립 감정 인식

김원구 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

In this paper, the vector quantization based emotion recognition system is proposed for speaker and context independent emotion recognition. For this purpose, a corpus of emotional speech data recorded and classified according to the emotion using the subjective evaluation were used to make statistical feature vectors such as average, standard deviation and maximum value of pitch and energy and to evaluate the performance of the conventional pattern matching algorithms. In the Experiments, pitch and energy parameters were used as a prosodic information and MFCC parameters were used as phonetic information. Experimental results showed that vector quantization based emotion recognizer using MFCC parameters showed better performance than that using the pitch and energy parameters. The vector quantization based emotion recognizer achieved recognition rates of 73.3% for the speaker and context independent classification.

경쟁제한적 기업결합

김재걸,김원규 牧園大學校 社會科學硏究所 1997 産經硏究 Vol.13 No.-

오늘의 우리 경제는 부도 직전에 IMF로부터의 긴급지원으로 가까스로 위기를 면하게 된듯하다. 그러나, 그 대가로서 감수해야 할 고통이 예상되는 것도 주지의 사실이다. 그 중에서도, 외국인의 국내기업에 대한 주식투자 한도가 무제한으로 됨에 따라, 국내 기업은 외국인 투자가들의 사냥감이 되게 되었고, 만일 외국인에 의한 인수 ( 합병을 저지하고자 한다면 국내 투자가들에 의한 인수 ( 합병이 있어야 하는 등, 소위 기업의 인수 ( 합병(M&A)이 예상되고 있다. 이러한 시점에서 본 논문은, 기업의 인수 ( 합병의 개념을 파악하고, 이러한 경우에 있어서의 독점규제 및 공정거래에 관한 법률의 규제 대상(일정한 거래분야에 있어서 경쟁을 실질적으로 제한하는 기업결합)이 되는 기업의 인수 ( 합병은 어떠한 것이며, 또한 이러한 것을 가려내는 방법 즉 판단기준은 무엇인가에 관하여, 우리 나라 공정거래위원회 및 일본의 공정거래위원회의 구체적인 심결례를 통하여 서술한다. 그러나, 현행 독점규제 및 공정거래에 관한 법률에 의할 경우에는 그 판단이 곤란한 점이 많기 때문에, 이를 보완하기 위한 법적 조치가 필요함을 지적한다.

유전특성에 미치는 선형 저밀도 폴리에틸렌과 에틸렌 비닐 아세테이트 혼합비 영향

김원종,정의남,임윤희,심낙순,박하용 三陟大學校 2002 論文集 Vol.35 No.-

The physical and electrical properties of electrical insulating materials due to the mixing ratio of linear low density polyethylene(LLDPE) and ethylene vinyl acetate(EVA) are studied. Specimens are selected as LLDPE and EVA of mixing ratio of 50 : 50, 60 40, 70 : 30, 80 20 and virgin. To analyze the physical properties of specimens, Fourier transform infra-red spectrum, X-ray diffraction and differential scanning calorimetry are used. To investigate the influence on dielectric characteristic due to Physical structural change of specimens, we investigated the frequency and temperature dependency of tan f for virgin specimen and mixture specimens in the temperature range of 25[t]~120['c], frequency range of 30[Hz] ~l.5×10s[Hz]. For the value of tan 3, dielectric loss, at each temperature of 35, 75, 100, 120[℃], it is confirmed that as applied voltage increase, α and β peak moved to low frequency area at high temperature area, and also moved to high frequency at low temperature areas, the width of peak widen. it is considered to be caused by the molecular vibration, reduction of side-branch density, reduction of crystalline with increasing temperature.

확률적 매칭을 사용한 화자독립 음소 HMM 기반의 음성 인식

김원구 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This paper presents a method that improves the performance of the personal voice dialling system in which speaker independent phoneme HMM's are used. Since the speaker independent phoneme HMM based voice dialing system uses only the phone transcription of the input sentence, the storage space could be reduced greatly.However, the performance of the system is worse than that of the system which uses the speaker dependent models due to the phoneme recognition errors generated when the speaker independent models are used. In order to solve this problem, a new method that jointly estimates transformation vectors for the speaker adaptation and transcriptions from training utterances is presented. The biases and transcriptions are estimated iteratively from the training data of each user with maximum likelihood approach to the stochastic matching using speaker-independent phone models. Experimental result shows that the proposed method is superior to the conventional method which used transcriptions only.