높은 지향성을 갖는 Air Line 결합기 설계

길준범,이성원,최영호,박종임,안달,박준석 호서대학교 반도체제조장비국산화연구센터 2000 학술대회 자료집 Vol.2000 No.1

본 논문에서는, 일반적인 스트립 구조의 결합기가 갖는 문제 즉, 높은 온도에서 나쁜 특성을 보이는 문제점을 극복하고자 Air Line Type의 결합기를 구현하였다. 또한 이 결합기는 24dB이상의 지향성을 가지고 있다. 해석을 위해 짝수 모드와 홀수 모드 해석법을 사용하였고, EM-Simulation으로 확인한 특성과 실제 제작된 20dB, 30dB Cellular 대역(800∼900MHz) Air Line 결합기의 결고 특성은 좋은 일치를 보여주고 있다. 또한 최대 장점인 온도 특성은 온도 데이터를 통하여 온도에 강한 특성을 보임을 알 수 있다.

고농도 Manitol용액의 관류에 의한 흰쥐 뇌혈관의 미세구조의 변화

엄순길,김경용,이원복,김동창 대한해부학회 1993 Anatomy & Cell Biology Vol.26 No.4

방사선 펄스 계측 및 분석시스템에 관한 연구

길경석,손원진,송재용,김일권 한국해양대학교 산업기술연구소 2002 연구논문집 Vol.19 No.-

An objection of this study is to develop a measuring circuits and a analytic system for radioactive pulses. The proposed system consists of a pulse detection units for neutrons and gamma-rays, a programmable high voltage supply unit and a digital signal processor. Gamma-ray detection circuit can count pulse up to 10,000[pps]. The pulse detection parts consists of an active integrator, a pole-zero circuit, and a 3-stage amplifier of 60[dB], and its frequency bandwidth is from 37[Hz] to 300[kHz]. Also, pulse height distribution in accordance with pulse counts is important data in analyzing radioactive pulses. In this study, A/D converter (12[bit], 100[ns] and DSP [TMS 320C31-60) are used to analyze the pulse height, and the analytic system is designed to be operated in PC-base. Radioactive pulse has superior penetration ability to all kind of materials, and it is also possible to evaluate the soundness of electrical insulation materials by analyzing the pulse counts and/or pulse height distribution.

의과대학생과 일반대학생의 삶의 질 비교

민성길,신원철,김광일,정지인,김동기 대한신경정신의학회 2000 신경정신의학 Vol.39 No.6

연구목적 : 미래에 환자들의 신체적, 정신적 건강을 책임지게 될 의과 대학생 집단이 의학을 공부하는 과정에서 어떤 신체적, 정신적 및 사회적 문제들에 의해 고통받는지 알아보고 이의 개선방향을 발견하기 위해, 의과대학생들이 느끼고 있는 삶의 질에 대한 연구를 실시하였다. 방 법 : 1999년도에 연세대학교 의과 대학에 재학중인 본과 학생 317명과, 연세대학교 재학중인 일반 대학 150명을 대상으로 설문조사를 하였다. 조사도구는 세계보건기구 삶의 질 간편형 척도(WHOQOL-BREF)였다. 의과대학생과 일반대학생의 삶의 질을 각 항목(item)별, 영역(domain)별, 그리고 총점의 평균값을 비교하여, T-test로 검정하였고, 각 영역의 기여도를 다중회귀 분석으로 평가하였다. 결 과 : 전체점수에서는 차이를 보이지 않았다. 그러나 항목별점수에서는, 수면과 휴식, 성적 활동, 레저와 여가활동에 대한 참여와 기회에서는 의과대학생의 삶의 질이 유의하게 낮게 보고되었으며, 약물과 치료에 대한 의존도, 경제적 자원, 새로운 정보와 기술을 얻을수 있는 기회, 교통수단에서는 의과대학생의 삶의질이 유의하게 높게 보고되었다. 영역점수에서는, 사회적 관계 영역에서 의과대학생의 삶의 질이 낮게, 환경 영역에서는 높게 보고되었다. 그리고 의대생에서 신체적 건강, 환경, 그리고 사회적 관계 영역들이 삶의 질에 크게 기여하였고, 반면 일반대생에서는 심리적 영역과 환경 영역이 크게 기여하였다. 결 론 : 이와 같은 결과는 주로 의대생들의 사회적 관계 영역, 그리고 기타 하부척도에서는 수면과 휴식, 성적활동, 레저와 여가 활동에 대한 참여와 기회 등의 항목에서 삶의 질을 높이는 것이 필요하다는 것을 시사한다. Objectives : The quality of life of medical students was investigated and compared with that of general college students to identify what kind of problems medical students are suffering from. Method : Korean version of WHOQOL-BREF was administered to 317 medical students and 150 general college students of Yonsei University in 1999. Collected data were analyzed with t-test and multiple regression analysis Results: There was no significant difference in the total scores of WHOQOL-BREF between medical students and general college students. However, the scores of facets of sleep and rest, sexual activity, and participation and opportunities for recreation/leisure were significantly lower in medical students than in general colleges for recreation/leisure were significantly lower in medical students than in general college students, while the scores of facets of dependency on medication and treatment, financial resources, opportunities for acquiring new information and skills, and transport were significantly higher in medical students than in general college students. The score of social relationships domain was significantly lower in medical students than in general college students, while, the score of environmental domain was significantly higher in medical students than in general college students. Physical, environmental and social relationships domains contributed more to the quality of life of medical students than psychological domain while psychological and environmental domains contributed more to the quality of life of general college students than physical and social relationships domains. Conclusion : The result suggests that it is necessary to improve the quality of life of medical students in social relationships domain and in the facets of sleep and rest, sexual activity, participation and opportunities for recreation/leisure.

장기간의 크레아틴 구강 투여와 웨이트 트레이닝의 병행이 근육량과 체구성비 및 안정시 대사량에 미치는 영향

채지원,임길병 대한스포츠의학회 2004 대한스포츠의학회지 Vol.22 No.1

The purpose of this study is to examine the effect of long-term oral creatine supplementation combined with weight training on muscle mass, body composition, and resting metabolic rates. Ten participants are divided into 2 groups: Creatine supplement group, non-Cr supplement group. The creatine supplement group took 20 g of creatine monohydrate daily for the first 4 days and 5 g daily for the following 54 days. All the subjects performed onehour resistive training three times per week. Between creatine supplementation group and non creatinesupplementation group, there was no significant difference in resting metabolic rate,body weight, body fat percentage, body fat mass, lean body mass, urinary creatinine level, and one repetition maximum. However, creatine supplementation group had a tendency of being increased in resting metabolic rate, body weight, lean body mass, urinary creatinine, and one repetition maximum.

제품 특성과 공급체인 유형 간의 관계구조가 공급체인 성과에 미치는 영향에 관한 연구

김길선,이창원 서강대학교 경영연구소 2004 서강경영논총 Vol.15 No.2

판소리의 사설짜기에 대한 고찰 - 〈새타령〉을 중심으로 -

손길원,최진형 京畿專門大學 2000 京畿專門大學 論文集 Vol.- No.28

This study's main aim is the type of construction of Pansori-sasul. The Pansori is important genre in the many cultural discourses at 19th century. The Pansori has very flexible way to construct text with contemporary other genre. A horizontal movement of unit text is main theory of constructing Pansori-sasul. With this view point, this study will consider on <Saetaryung>. <Saetaryung> is a song of Jap-ga and piece of Pansori-sasul. So, study on <Saetaryung> will explain the theory of construction Pansori-sasul. This study will show construction theory of Pansori with a point of difference with Jap-ga and Pansori with focus on <Saetaryung>. The conclusion of this study will explain a type of discourses in 19th century of our classical genre of lyricism and narrative. And that will be able to show the theory of construction Pansori-Sasul, too.

패프타이드와 類似한 슬폰酸의 合成

朴元吉 慶北大學校 1962 論文集 Vol.5 No.-

By varying groups on biologically active molecules, it is possible to produce analogues which sometimes inhibit the action of the parent compount. Suc is true of taurine (β-aminoethane-sulfonic acid) and analogue of β-alanine and of N-pantoyltaurine for pantothenic acid. It seemed possible that the sulfonic acid analogues of amino acids built into peptids might possibly produce inhibition of the parent peptide. N-Tauryl-L-histidine was selected to prepare as an analogue of carnosine(N-β'alnyl-L-histidine). There were several reasons for this choice. Carnosine causes a slight contraction of isolated uterine muscle and inhibition of this action can be easily tested. Also, taurine being a β-amino sulfonic acid, is much more stable than the α-amino sulfonic acids. N-(N-phthaloyltauryl)-L-histidine methyl ester prepared by condensing N-phthaloyl chloride with histidine methyl ester in chloroform. The yield were quite low possibly due to reaction between the acid chloride and the imidazole of histidine. Approximately 50% yield of crude amorphous product was obtained, but upon purification by crystallization they yielded only 25% of a pure product. The methyl ester was removed by acid hydrolysis to prevent partial cleavage of the phthaloyl group. Grystalline N-taurylhistidine was then obtained from this acid by removal the phthaloyl group by hydrazinolysis. Tests for inhibition were carried out by comparing the action of carnosine on isolated uterine muscle before and after N-Taurylhistidine had been added to the bath surrounding the muscle strip. Only in very high relative concentration of taurylhistidine was there any demonstrable inhibition.

한국형 스포츠 귀인 측정도구 개발

김원배,윤영길 한국스포츠심리학회 2003 한국스포츠심리학회지 Vol.14 No.1

본 연구에서는 고등학교 선수 158명과 대학교 선수 169명을 대상으로 성공과 패배에서 느꼈던 스포츠 귀인유형을 탐색하여 스포츠 귀인 측정 문항틀을 개발하였으며, 고등학교 선수 391명과 대학교 선수 221명을 대상으로 한국형 스포츠 귀인 측정 도구에 대한 통계적 검증을 실시하였다. 연구결과, 성공에 대한 귀인유형으로는 노력, 컨디션, 능력, 정신력, 팀웍, 운, 자신감, 지도력, 상대수준, 집중력, 체력 등으로 나타났으며, 패배에 대한 귀인 유형으로는 노력부족, 능력부족, 컨디션 난조, 정신력 저하, 자만심, 팀웍 부족, 운, 체력 저하, 집중력 저하, 심리적 부담감, 상대방 수준 등으로 나타났다. 이러한 귀인 유형들의 원자료를 바탕으로 문항을 구성하여 통계적으로 문항반응 비율, 신뢰도 분석, 요인분석을 실시한 결과 스포츠 성공 귀인 측정 질문지(7요인, 25문항)는 상대분석, 정신력, 지도력, 운, 팀웍, 노력, 컨디션 요인으로 구성되었으며, 스포츠 패배 귀인 측정 질문지(5요인, 22문항)는 자만심, 팀웍 부족, 심리적 부담감, 컨디션 난조, 정신력 저하 요인으로 구성되었다. The purpose of this study was to develop Korean version of Sport Attribution Scale by examining Attribution factors of 158 High School players and 169 College players in success/failure. In addition, Korean Sport Attribution Scale were tested statistically as having subjects of 391 High school players and 221 College players. The results of the study demonstrated that Attribution factors of success were effort, condition, ability, teamwork, luck, confidence, leadership, the level of opponents, concentration, and physical strength. Attribution factors of failure were lack of effort, lack of abilities, poor conditioning, weak mental condition, self-sufficiency, lack of teamwork, bad luck, decreased physical strength, decreased concentration, psychological pressure, and the level of opponents. The Questionnaires were based on the raw data of attributional factors. As the results of factor analysis, questionnaire-response rate, and validity analysis, Sport Success Attribution Questionnaires(7 factors, 25 questions) consists of analysis of opponents, mental toughness, leadership, luck, teamwork, effort, and condition. Sport Failure Attribution Questionnaires(5 factors, 22 Questions) were self-sufficiency, lack of teamwork, poor conditioning, and weak mental condition.

歷史 小說 硏究

손길원 京畿專門大學 1997 京畿專門大學 論文集 Vol.- No.25