크론병에 대한 CoPPLX의 방어효과에 대한 연구

이호학,김유림,문창기,이재일,양병윤,김종수,이정민,정재혁,안석진,박상준,김윤권,김소연,김영중,조민구,최영자,장성조 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

Au를 공침한 SnO₂후막센서의 가스 감응 특성

성정훈,강대원,이윤수,임준우,홍영호,이덕동 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

High selective and sensitive thick film type methane gas sensors were fabricated and their sensing characteristics for various hydrocarbon gases were investigated. Raw material, SnO_(2)/Au, prepared by coprecipitation was even grain size. SEM, TEM, BET and XRD analyses were carried out for investigation of surface morphology and crystalline structure. The thick film devices using the above materials exhibited high sensitivity to methane gas at the operating temperature of 400°C. The sensitivity of SnO_(2)/Au+Pd thick film devices to methane gas was higher than that to the other hydrocarbon gases such as iso-butane and propane. The optimal adding amounts of Au and Pd were 1wt.% and 3wt.%, respectively. The sensitivity, S, is defined as {(R_(A)-R_(G))/R_(A)}><100, which R_(A) and R_(G) are resistance in air and that in the gas ambient, respectively.

냉기 치료에 따른 둔근에서의 피부 및 근육내 온도 변화

정우성,김미정,박시복,이상건,김영호,양길태,장윤희 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.2

로보트 매니퓰레이터 시스템을 위한 지능 제어기

정성옥,이윤배 조선대학교 기초과학연구소 1991 自然科學硏究 Vol.14 No.1

With growth of computer science, researches and developments on robot problem-solving have led to many ideas about expert control in artificial intelligence. This paper describes the distributed system of intelligent controller for robot manipulator system with 3 joints. In this paper, I present the result of the experiments which indicate how the motion of controlled robotics might be achieved through similar pattern-based paradigms, implemented for real-time operations on robot manipulator with artificial intelligent methodology. For intelligent controller, a knowledge base system is constructed with the knowledge base, inference engine and user interface to determine the control signals required to obtain the desired results.

저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

Silicone Elastomer에 의한 육아종성 조직의 미세구조적 연구

윤정길,최찬,정상우 全南大醫大 1985 전남의대학술지 Vol.22 No.3

반하(Pinellia ternata)가 랫드의 수컷 생식기계에서 3β-HSD,SGP-2 및 AR 유전자 발현에 미치는 영향

연정민, 백인정, 김윤배, 노재섭, 황방연, 김순선, 조대현, 이범준, 윤영원, 남상윤 충북대학교 동물의학연구소 2005 Journal of Biomedical and Translational Research Vol.6 No.2

본문참조

BMS 수리모형하에서 시스템의 수리효과 및 고장강도함수의 모수추정

윤원영,정석주,정일한,김종운,정상욱 한국경영과학회 2000 韓國經營科學會誌 Vol.25 No.4

Estimation problems of parameters of the failure process and the repair effect in repairable systems are considered. We propose estimation procedures in repairable systems without preventive maintenances. The fallure process is modeled by a proportional age reduction model (Brown. Mahoney, Sivazlian [5]) which is able to consider both aging and repair effects. Maximum likelihood method is used to estimate the repair effect and parameters of intensity function simultaneously. Simulations are performed to evaluate the accuracy of estimators. A numerical example is also presented.

압저항형 스마트 실리콘 압력 센서의 설계

정후민,신윤권,조상복,이종화 울산대학교 2001 공학연구논문집 Vol.32 No.2

압저항형 스마트 실리콘 압력 센서를 0.6 ㎛ 이중 폴리 실리콘 이중 금속 CMOS 공정으로 구현하기 위하여 설계하였다. 이 스마트 실리콘 압력 센서는 압저항형 저항기들로 된 휘스톤 브리지를 갖는 다이아프램과 op-amp, A/D 변환기, 및 UART 회로 등의 주변회로 들로 구성되어 있다. 브리지 회로의 출력 전압과 압력에 의한 기계적 응력 사이의 관계를 COSMOS-M 상용프로그램으로 다이아프램의 응력 분포를 모의실험하여, 압저항기의 최적의 위치와 크기에 대한 연구를 하였다. CMOS op-amp 회로는 규정된 출력 특성을 얻기 위하여 크기가 다른 트랜지스터들로 설계하여 HSPICE로 모의실험하여 최적화 시켰다. A/D 변화기 회로는 가능한 칩 면적을 줄이기 위하여 서브 레인징 기법과 신경 MOSFET 구조를 이용하여 설계하였다. UART회로는 VHDL 소스 코드와 셀 라이브러리를 이용하고 Synopsys로 합성하여 설계하였다. 회로의 물리적 레이아우트 설계는 Mentor 틀로 설계하였다. 그러나 온도보상회로와 출력오프셋 문제는 아직 해결하지 못하고 다음에 연구할 예정이다. A piezoresistive smart silicon pressure sensor is designed to implement with 0.6 ㎛ double-polysilicon double-metal CMOS precess. This smart pressure sensor is composed of a diaphragm with piezoresistive resistors' Wheatstone bridge and the peripheral circuitry of op-amp, A/D converter and UART. The relationship between the output voltage of the bridge circuit and the mechanical stress by applied pressure was studied by simulating the stress distribution on the diaphragm with COSMOS-M package program to optimize the size and position of piezoresistors. The CMOS op-amp circuit was designed with different CMOS transistor sizes to obtain the defined op-amp output characteristics and simulated with HSPICE. The A/D converter was designed using neuron MOSFET structure and sub-ranging method to minimize the chip area. The UART circuit was designed by using VHDL source code and cell library and by synthesizing with Synopses and the physical layout of the circuit was designed with Mentor tools. The problems for temperature compensation and the output voltage offset were not yet considered.

國民學校 兒童의 姿勢計測에 對한 硏究

尹南植,韓成一,成丁順 梨花女子大學校 韓國生活科學硏究院 1977 韓國生活科學硏究院 論叢 Vol.18 No.-

국민학교 어린이들의 자세의 諸特性을 分析하여 學校現場에서의 자세교육의 지도자료를 구하는데 연구 목적이 있다. 서울, 경기지방의 남녀 어린이 240명에 대하여 척주 만곡도, 下肢의 상태 등을 계측하여 分析檢討한 結果를 다음과 같이 要約할 수 있다. (1) 연구대상자의 신체 형태의 특징은 細長型인데, 약 28%의 어린이는 전에 병을 앓은 경험이 있고, 50∼60%의 영양 불량아가 있다. (2) 자세에 미치는 환경 요인은 不實한 傾向이 있지만 자세 지도나 자세에 대한 관심도는 비교적 높다. (3) 立位자세의 표준 前傾度는 남자 4˚∼+5˚, 여자 -3˚∼+3˚이다. (4) 흉추부의 표준 만곡도는 남자 3˚∼12˚, 여자 4˚∼12˚이다. (5) 표준 상배 후만각은 남자 155˚∼168˚, 여자 152˚∼166˚이고, 표준 요부전막각은 남녀 모두 152˚∼168˚이다. (6) o脚은 전체 어린이의 7%이고 x脚은 3%를 차지하고 있다. The purpose of this study was to obtain the materials on the posture education at school. The subjects chosen for this study were 240 children from the first to the sixth grades at the elementary schools located in Seoul and Kyong-Gi Province. The children were interviewed each to examine the posture structure, were measured the degrees of vertebrae curvatures and the structure of the lower limbs by the Cureton's conformatuer to find the characteristics of the posture. The results were: (1) The children were near to the type of ectomorph posture. About 28% of the children had previously suffered the serious diseases. The children of unbalanced diet were from 50% to 60% of the total number. (2) 45% of the children used the desks and chairs when they study, and 70% of them had their desks and chairs unfit to their body structures. (3) Under these unfavorable circumstances, the children showed, however, the higher enthusiasm for the posture education which is encouraging. (4) The average Angle ∠α of forward curvature in standing position was about -4˚∼+5˚ among boys and -3˚∼43˚ among girls. (5) The average angle ∠a' of verabrae curvature of the thoracic was 3˚∼12˚ among sboy and 4˚∼12˚ among girls. (6) The male with Kyphosis (hunch back) was about 155˚∼168˚, the female was 152˚∼166˚. The male and female with lordossis of lumber curvature was 152˚∼168˚. (7) The children of bowlegs (O type) and those of knock knees (x type) were 3% of the whole.