Ba_2Ti_9O_20 유전체 재료의 저온소결 첨가제에 의한 소결 거동 및 고주파 특성

최명호,이주희,박명진,고영철,김남철 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-

Sintering characteristics and microwave dielectric properties of the Ba_2Ti_9O_20 ceramics added with lithium-boro-silicate glass frit were investigated. Sintering experiments showed that the densification occurred at lower firing temperatures down to 900℃ as the addition of glass frit was increased up to 10wt%. The bulk density and shrinkage of ceramics were strongly dependent on the amount of the glass frit. The microstructures of the ceramics were found to become skeletal-like structures as increase of glass frit. The monoclinic crystal structure of the Ba_2Ti_9O_20, however, was found not to be affected by the addition of glass frit up to 10wt%. Microwave dielectric constants of the glass frit added ceramics were relatively consistent of 35 with over 15% shrunk and densified ceramics. However, the quality factor (Qf) and the temperature constant (TCP) was found to be significantly affected by the additions of glass frit.

지역 청소년 정신건강 교육을 위한 기질에 따른 도형선호도 분석에 관한 연구

우명철(Woo, Myung-chul) 한국여가복지학회 2021 여가복지경영연구(여가복지) Vol.2 No.1

이 시대의 청소년들의 학업부진, 정서, 불안정성, 우울감, 우울증, 불면증, 편집증, 무감각, 노여움, 두려움, 공포, 학교폭력, 및 자살 등의 문제에 직면하고 있으며 현대인들의 복잡한 생활양식인 인관관계의 몰이해에서 오는 정신적인 문제들이 빈발하고 있는 이 때 현대인들의 정신건강 관리를 위해 다양한 프로그램 중 치유상담을 병행할 수 있는 도형을 통한 상담 및 도형상담, 우쓰치유학은 편안하게 접근하여 정신적인 내면과 영적상태를 파악 치유할 수 있는 효율적인 진인치유 기법이며 통계 과학적인 상담기법의 도구가 될 것이다. 우쓰도형기질유형 척도 개발 연구를 위해 상담분야인 현존하는 두 이론, 수잔 델린저 도형이론과 팀 라헤이 기질이론을 이용하여 본 연구자는 우쓰힐링상담연구소에서 상담의 정확성과 효율성을 높이고자 연구하였다. Woo s Healing 진단 유형인 심리상담의 도구 척도를 활용을 하고자 척도를 보안하고 요인분석과 상관관계를 가설로 정하고 분석하였다. 조사기간은 90일간, 142명을 실증적인 상담을 겸하여 조사하였으며 본 척도를 분석하기 위해 spss 24.0을 이용하여 요인분석 프로그램을 이용하여 타당성을 분석하였다. 본 척도는 사각형기질 2성분, 8개, 원형기질 4성분, 9개, 사각형기질 1성분, 9개, S기질 3성분, 8개, 문항을 추출하였다. 검사지 한 장속에 도형을 그리게 하여 그 속에서 도형의 형태, 위치, 크기, 작기, 배열을 통해서 심리상태, 정서적인 면과 무의식 속에 있는 과거의 심리적인 상처들과 견고한 진들을 발견하게 하여 현재를 발견하고 미래를 제시하며 편안하게 접근하여 정서적인 안정성을 갖게 한다. 도형을 통한 심리학적 상담인 우쓰치유학은 영성이 없이는 내담자를 통찰하기 어려우며 영성도, 심리학이 없이는 우리의 가면의 문제를 해결할 수 없듯이, 어찌 보면 우쓰치유학은 심리학과 영성사이의 가교역할을 할 수 있다고 볼 수 있으며 이는 어느 누구 계층의 사람도 편안하게 접근하여 간단하면서도 빠르게 진단하는 전인치유적인 상담기법으로 이끌어 내는 통계 과학적인 학문으로 이는 우쓰치유상담기법이다. A Study On The Development Of Woo s Geometric shape Temperament Type Indicator Woo Myung-cheol CEO, Woo s Educational Research Institute for Healing & Counseling Purpose; In the Modern Era, Science and Medicine are developed nutrition and sanitation conditions very much are improved. But Human Happiness is not progress, Frankly Saying, keeps on worseing. Youth do not know their way that leads them true happiness. Modern Men contain Youth are suffered and stressed by Pollution with Political and Econimic Situations. In order to resolve these hard situations, We are to use and develop further Mental Therapeutic Curing as well as Woo s Healing Woo s Geometric Shape. Psycho-geometrics. And We are to contain Whole Man Healing or Holistic Therapy to Care Contemporary Men. Methodology ; Mental or Spiritual Healing for Modern Men needs Various Programscontain Woo s Healing and Psycho-geometrics using Woo s Geometric Shape and Temperament Type. Especially Woo s Healing contributes emotional, mental, spiritual healing using scientific counseling method, effetive statistial analysis, and contact them comfotablely. Findings; These experiment found out that Temperament Types are deep meaningly relative one another. Results ; We make the best use of Using these Findings to develop human relation with our neibourhood and mental, spiritual peace privately.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

터널의 계측변위를 이용한 역해석기법에 관한 연구

박명철,민덕기 울산대학교 1996 공학연구논문집 Vol.27 No.2

본 논문은 직접법으로 수행한 역해석결과를 제시하였다. 본 연구에서 개발한 역해석 기법은 최적화 기법에 가중치를 적용시켜 구하고자 하는 미지의 물성치를 얻을 수 있었다. 직접법의 장점은 복잡한 수학 방정식이 불필요하여 비선형 문제를 해결할 수 있어 실제현장에 적용가능하다. 그리고 유한차분법을 이용하여 정해석을 실시하였으며, 정해석으로부터 구한 변위를 계측변위로 하여 탄성계수와 초기응력을 대상으로 역해석을 실시한 결과 거의 정확한 값에 수렴하는 것을 확인할 수 있었다. 그리고 현장 계측데이타를 이용하여 역해석을 수행하여 타당한 물성치를 얻어 현장 적용성 검토도 확인하였다. In this paper, the results of back analysis based on the direct method were presented. The presented approach to back analysis with the weighting function was based on an iterative procedure correcting trial value of unknown parameters by minimizing the error function. The advantage of the presented approach was that method might be non-linear back analysis problem without having to rely on a complex mathematical background. By the FDM analysis on the underground structure, the method derived the complete intial state of stress and Young's modulus from the measured displacements. The presented approach was applied to analysis a tunnelling, and the results were satisfactory.

포트 분사 4밸브 엔진에서의 첫 번 크랭크 사이클 중 실린더 내부의 연료전달

홍명석,안철봉,박용태 조선대학교 동력자원연구소 1997 動力資源硏究所誌 Vol.19 No.1

Fuel transport was visualized within the cylinder of a port injected four-valve SI engine having a transparent cylinder liner. Measurements were made while motoring at 250rpm to simulate cranking conditions prior to the first firing cycle, and at 750rpm to examine the effects of engine speed. A production GM Quad-4 cylinder head was used, and the stock single-jet port fuel injector was used to inject indolene. A digital camera was used to capture back-lighted images of cylinder wall wetting for open and closed intake valve injection. In addition, two-dimensional planar imaging of Mie scattering from the indolene fuel droplets was used to characterize the fuel droplet distribution as a function of crank angle for open and closed intake valve injection. LDV was used to measure the droplet and air velocities near the intake valves during fuel injection. It was found that with open-valve injection a large fraction of the fuel impinged on the cylinder wall opposite the intake valves. This fuel did not completely vaporize over the engine cycle and built up over successive motored cycles. The small droplets that impinged upon the cylinder wall coalesced quickly due to surface tension forces, which impeded fuel vaporization from the cylinder wall. For closed-valve injection the fuel was stripped from the intake valves and ports very shortly after intake valve opening by the incoming air. There was very little impingement of fuel on the cylinder walls with closed-valve injection, but some fuel droplets apparently impinged on the piston top. It was observed that the droplets from closed-valve injection tend to be larger than those from open-valve injection, although this was not quantified. With closed-valve injection, droplets entering the cylinder had lower velocities than the incoming air. With open-valve injection, the early droplets entering the cylinder had higher velocities than the incoming air, but the droplets and air velocities were very close for most of the injection period.

수평 구조의 냉전자 방출형 자기센서

남명우,김시헌,남태철 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1

We have fabricated the vacuum magnetic device with a lateral field emitter arrays constructed on n-Si wafer, and investigated its magnetic chracteristics. The devics is consisted of tip-arrayed emitter, gate, and split-anodes. The characteristics of the fabricated samples have been measured in the vacuum of 6.2X10^(-7) torr. A turn-on-voltage was approximately 84 V and anode current of 0.62 μA/tip was observed at the gate and the anode bias of 100 V and 200 V, respectively. Fowler-Nordheim plot could be obtained from the measurement, and field emitting area and field conversion factor calculated from the plot were 6.3X10^(-)16~1.2x10^(-15)cm^(2) and 8.9x10^(5)cm^(-1), respectively. The fabricated vacuum magnetic device has showed a good linearity to the magnetic field and a high sensitivity compared with the conventional semiconductor magnetic devices.

Nonlinear Cardiac Dynamics and Morning Dip : 위험한 일중리듬 An Unsound Circadian Rhythm

염명걸,김남수,오재원,김창렬,이재웅,김순길,이철범,노정일,최정연,윤용수 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.3

이론적 관점에서 본 동화 구연의 활성화 방안

김명철 부산교육대학교 초등교육연구소 1996 초등교육연구 Vol.9 No.-

These days the development of sensibility and accurate usage of the Korean language are regrettably weakened to the disadvantage of healthy growth of young pupils in Korea because of blind concentration on learning foreign language, computer and so on. In order to solve these problems the present study has focused on analyzing many reference books in Korea and finding out effective ways for activating ornal narration of fairy tales. 1. Profound and concrete ways in terms of theory and practice should be presented in order to diffuse oral narration of fairy tales all over the country. 2. Through a lot of reading fairy tales and steady practice on the oral narration anyone has to be confident of becoming an excellent oral narrator, who has been mistakenly believed to be talented by birth. 3. Kindergarten and elementary school authorities across the country should institutionally and financially support their teachers concerned for the thorough activation of oral narration of fairy tales among young pupils. 4. The mistaken idea that oral narration of fairy tales is out of date and is not in line with social change should be completely corrected at home and in the society of Korea.

平生敎育 理念下의 學校敎育과 社會敎育의 連繫體制 構築에 關한 硏究

金明澈 釜山敎育大學校 1994 부산교육대학 논문집 Vol.30 No.1

These days we can find a lot of accidents and social problems in the society of Korea, even though partly developing aspects can be shown. Furthermore, in line with rapid social change, Korea has been confronted with various social needs such as tremendous amount of information, changing way of life, self-realization, etc. Though we partly succeeded in coping with these problems and social needs by virtue of formal education(schooling) for the past years, recently we have almost failed in it because of many limits and rigidity in formal education. In order to solve these problems and needs the present study has focused on finding out fundamental direction for the establishment of linkage between formal and nonformal education system on the basis of conformal education articles and reference books in and out of the country. 1. Mutual utilization of educational resources between formal schools and nonformal education institutions should be guaranteed legally, institutionally and financially. 2. In terms of educational system, curriculum and mutual approval of academic record, it should be legally and institutionally guaranteed that both formal and nonformal education system have equal importance, and smoothly maintain mutual linkage in both vertical and horizontal dimensions. 3. Nonformal education institutions and their supporters including experts and researchers concerned should improve the quality of their programs and educational process in terms of theory as well as practice, to be a better model compared with that of formal schools. 4. Rigid and out-of-date values and attitudes of whole people in Korea that formal education(schooling) is best should be revolutionarily changed into those that nonformal education is equally valuable and indispensable in future learning society.

아동이 지각한 부모의 사회·경제적 배경이 아동의 학업성취에 미치는 영향

김명철 부산교육대학교 초등교육연구소 1998 초등교육연구 Vol.13 No.-

Academic achievement of children is said to be closely connected with a lot of variables such as individual quality, parents' socio=economic background, teacher, and school climate, etc. The present study has focused on finding out how academic achievement of children is influenced by parents' socio-economic background like their academic career, occupation and economic status. The conclusion and educational advice are as follows : 1. A coefficient of correlation between parents' academic career and academic achievement of children has proved to be high, so supplementary and special program should be provided for the benefit of children with low level of academic achievement. 2. A coefficient of correlation between parents' occupation and academic achievement of children has also proved to be high, so special field study and career guidance should be strengthened for the benefit of children with low level of academic achievement. 3. A coefficient of correlation between parents' economic status and academic achievement of children has also proved to be high, so effective way of learning in school should be given to children with low level of economic status.