심혈관계 질환으로 관상질환 집중치료실에 입원한 환자들의 혜후 측정을 위한 APACHEⅢ점수 체계의 임상적 유용성

이공섭,이창선,최현주,홍종서,강지향,김도형,이민영,오인균,김병엽,김상억,김학찬,한승혜,이재용,지영우,안경주 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

다중모델기법을 이용한 비선형시스템의 퍼지모델링

이철희,하영기,서선학 江原大學校 産業技術硏究所 1997 産業技術硏究 Vol.17 No.-

In this paper, a new approach to modeling of nonlinear systems using fuzzy theory is presented. To express the various and complex behavior of nonlinear system, we combine multiple model method with hierachical prioritized structure, and the mountain clustering technique is used in partitioning of system. TSK rule structure is adopted to form the fuzzy rules, and Back propagation algorithm is used for learning parameters in consequent parts of the rules. Also we soften the paradigm of Mamdani's inference mechanism by using Yager's S-OWA operators. Computer simulations are performed to verify the effectiveness of the proposed method.

유연구조 퍼지추론 및 비퍼지화

이철희,서선학,Yager, R. 강원대학교 정보통신연구소 1997 정보통신논문지 Vol.1 No.-

In this paper, we suggest a new approach having the flexibility to the problem of fuzzy inference and defuzzification. For fuzzy inference, we observe the fact that it consists of three parts; the determination of firing level of each rule, the determination of degree of coupling between antecedent and consequent of a rule, and the aggregation of all rules. So we soften the paradigm of Mamdani's fuzzy inference model by using S-OWA operators. Also, for defuzzification, we introduced a combinability function to help to more intelligently guide the difuzzification process. And then, we treat it as a kind of clustering problem and apply the basic idea used in the mountain clustering method. The proposed method includes Mamdani's fuzzy inference model and center of gravity method as a special case, and it has the flexibility.

분자마커를 이용한 작물의 품종 개량과 품질관리

이이,엄유리,정찬문,석영선,이학수 충북대학교 연초연구소 2009 煙草硏究 Vol.22 No.-

분자마커는 현대 농업에서 없어서는 안 될 중요한 도구로 자리잡아가고 있으며 단백질과 DNA에 기초한 다양한 분자마커가 개발되었다. RFLP, RAPD, SSR, AFLP, CAPS, SNP, STS, DNA sequencing 등 다양한 분자마커는 독특한 특성을 가지고 있어서 용도에 맞게 분자마커를 선별하여 사용할 필요가 있다. 분자마커의 선별에서는 사용가능한 DNA의 양, DNA의 품질, 공우성 마커 여부, 비용 등을 고려해서 해야 한다. 담배에서는 주로 병저항성과 품종을 감별하기 위한 분자마커가 개발되어 이용되고 있으나 담배의 DNA 다형성이 다른 작물에 비하여 현저히 낮아 게놈프로젝트가 완성되면 resequencing을 이용하여 마커를 개발하는 것이 효율적일 것으로 보인다. Molecular marker is very important tool for modern agriculture. Various molecular markers were developed for detecting protein and DNA polymorphism. Restriction Fragment Length Polymorphism (RFLP), Random Amplified Polymorphic DNA (RAPD), Simple Sequence Repeat (SSR), Amplified Fragment Length Polymorphism (AFLP), Cleaved Amplified Polymorphic Sequence (CAPS), Single Nucleotide Polymorphism (SNP), Sequence Tagged Site (STS) and DNA sequencing are typical molecular markers commonly used. Each molecular marker has its own specific characters. Researchers have to choose a molecular marker for their own demands with considering the DNA quantity required, DNA quality required, codominance, and cost for developing and analysis. In tobacco, disease resistance and cultivar identification are the main focus of marker development. DNA polymorphism of tobacco is much less than that of other crops. Completion of genome project followed by resequencing could be a good opportunity for molecular marker development of tobacco.

항공기의 저속도 측정장치에 관한 연구

이학근,조중선 國立 昌原大學校 産業技術硏究所 1996 産技硏論文集 Vol.10 No.-

The anemometer is one of the sensors that can measure the aircraft speed. This paper describes that the development of the system for measuring the aircraft speed for low-speed, low-height using anemometer. This system can compensate in order to the linearized zone for measuring aircraft speed. The wind tunnel test has been carried out with the hardware of the constand current anemometer and constand temperature anemometer using wheaston bridge circuit. The control Algorithm which selects the data for a linearized zome in a wide range of the wind speeds has been adopted. The system were formed and tested by introducing the mixed algorithmic approach used constant current circuit and constant temperature circuit in order to measure the aircraft speed in a wide range of the wind speed.

21세기 새로운 시대를 준비하는 원광대학교 의과대학의 교육목표 개정과정

이학승,김요식,송윤강,오재민,양연식,정선관 원광대학교 의과학연구소 2009 圓光醫科學 Vol.24 No.1

교육목적은 대학의 교육이 지향하는 대전제이다. 그러므로 대학교육 목적과 목표가 어떤가에 따라 교육과정과 교육방법이 달라진다. 원광대학교 의과대학의 교육목표는, '지덕겸수'로 요약되는 '과학과 도학을 겸비한 전인교육'의 건학정신과 '학술탐구'와 '덕성함양'의 원광대학교 교육목표와 일치하게 현재까지 유지되었다. 그러나 현행 교육목표의 여러 문제점이 발견되었고, 시대상의 변화에 따라 원광대학교 의과대학에서도 사회적 변화 빛 의료인에 대한 시대적 요구에 걸맞은 의학교육의 목적 및 목표의 재설정 과정을 시작하게 되었다. 그 결과 개정 작업을 통해 새로운 교육목표를 설정하게 되었으며 그 내용은 다음과 같다. 1. 기본진료능력을 지닌 의사를 양성한다. 2. 원불교 교리 이념을 반영한 윤리적, 도덕적인 의사를 양성한다. 3. 평생 학습하는 연구하는 의사 혹은 의과학자를 양성한다. 4. 사회적 책무를 수행하는 리더십을 갖춘 의사를 양성한다. 5. 지역 사회에 공헌하는 봉사정신을 갖춘 의사를 양성한다. Purpose : With the changes to the medical environments and to the medical educational systems, we aimed to evaluate the current mission statement of the School of Medicine, Wonkwang University, and to revise it. Methods : To establish the new goal and mission statement, a Special Committee for the Revision of Medical School Mission and advisory group were organized in 2008. This special committee conducted through five steps of action, which are composed of investigation, education, development, surveillance of various opinions, and announcement. Results : For the development of new goal and mission, the revised, final goal and mission statements decided through the five steps of action. The new mission of Wonkwang University School of Medicine was as follows; 1. Doctor who can diagnose and treat easily 2. Ethical and moral doctor who practice Won Buddhism 3. Doctor or Medical Scholar who studies lifelong study 4. Doctor who has leadership to social responsibility 5. Doctor who goes into service to a local community. Conclusion : The authors expect that the new goal and mission of Wonkwang University School of Medicine would be helpful in giving the guideline on the educational process of medical school and will give the information to reform the medical school system according to the rapidly changing educational environment.

퍼지논리 제어기의 비선형성의 정량적 해석

이철희,서선학 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-

In this paper,the nonlinear I/O characteristic of suzzy logic controller is analyzed by using cell concept. Sources of the conlinearity inafuzzy logic controller include thefuzzification, the fuzzy reasoning and the defuzzification. A closed form expression for the defuzzified output is derived in case of a fuzzy logic controller with two inputs, traingular memberships, MacVicar-Whelan type linguistic rules, and direct fuzzy reasoning. As a result, it is shown that fuzzy logic linguistic rules, an direct fuzzy reasoning. As a result, it is shown that fuzzy logic controller is a nonlinear controller. Also its nonlinearity is analyzed with respect to the conventional PID control and the sliding mode control.

종골 골절 치료에 있어서의 전산화 단층 촬영의 유용성

김학준,하권익,윤정로,심재익,김택선,김영배,이우승,최재혁 대한골절학회 2003 대한골절학회지 Vol.16 No.4

고분자 전해질 감습막의 합성과 전기적 성질

공명선,조준상,이학민,김경호 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

고분자 습도센서의 감습재료로 이용하고자 4-vinylpyridine (4-VP) 과 methylmethacrylate(MMA) 의 공중함체를 전극에 도포한 후 α, ω-dihaloalkane으로 4 차 암모늄화시킨 후 습도변화에 따른 전기저항을 측정한 결과 소수성 모노머인 MMA의 양이증가할 수록 전기저항이 증가하였으며, 또한 α, ω-dihaloalkane에 의한 4차 암모늄화 반응시간에 따라서도 전기저항의 크기 및 감습막의 안정성에 차이가 있음을 알 수 있었다. In order to for a humidity sensitive material of polymeric humidity sensor, a copolymer of 4-vinylpyridine (4-VP) and methylmethacrylate (IBA) is coated on the electrode and then 4 quartermization by α, ω-dihaloalkane, and thereafter measured the electrical resistance due to humidity variation. As a result, the more content of MMA which is a hydrophobic monomer is increased, the more property of electrical resistance is increased. Also, according to the reaction time in 4 quarternization by α, ω-dihaloalkane we can see the diferences of the magnitude of electrical resistance and the stability of humidity -sensitive membrane.

구형 Helicobacter pylori의 중성구 매개 산화활성

홍원선,김혜원,이학성,명승재,정훈용,양석균,김진호,민영일,정명희 대한암예방학회 2000 Journal of cancer prevention Vol.5 No.3