태극건강기공체조(太極健康氣功體操)가 신체(身體)·생리적(生理的) 기능(機能)에 미치는 영향(影響)

전영선,Jun, Young Sun 대한침구의학회 2004 대한침구의학회지 Vol.21 No.4

Objective : This The purpose of this study is to find out the effects of the Taeguk Gi Gong Exercise program on physical and physiological functions. Methods : The study is performed with one group pretest-posttest design. A total of 20 subjects are selected by convenience sampling, which are comprised of 11 researchers of a research center, and 9 nurses of a general hospital. The average age of the subjects is 26.3 years old. The Taeguk Gi Gong Exercise program is consisted of 30-minute main exercise and 10-minute finishing exercise. During the first two weeks, the 40 minute program was conducted in a group, 5 times per week. From the third week, it was conducted 3 times per week, twice in a group and once individually by watching video. All of the subjects were examined for the vital signs, blood sugar, body weight, and the flexibility of joint before and after conducting the program. Results : The results of the study are as follows: 1. After the Taeguk Gi Gong Exercise, the systolic blood pressure increased, and there is no change in the diastolic blood pressure, but all of them are not significant. 2. After the Taeguk Gi Gong Exercise, the pulse decreased, but not significant. 3. After the Taeguk Gi Gong Exercise, the blood sugar increased, but not significant. 4. After the Taeguk Gi Gong Exercise, the body weight reduced significantly. 5. After the Taeguk Gi Gong Exercise, the flexibility of waist significantly increased. 6. After the Taeguk Gi Gong Exercise, the flexibility of arm significantly increased(Left : t=-4.219, p=.000, Right : t=-2.74, p=.013). Conclusion : Based on the results described above, it is considered that the Taeguk Gi Gong Exercise program is clearly effective in decreasing body weight and flexibility of joint.

부하를 고려한 DC-DC 컨버터의 듀티비에 따른 태양광 발전 시스템의 최대전력점 추적

전영선(Young-Sun Jun),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정철호(Chul-Ho Jung),김도연(Do-Yeon Kim),정병진(Byung-Jin Jung),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

This paper presents a maximum power point tracking(MPPT) of photovoltaic system with duty ratio of DC-DC converter considered load. A variation of solar irradiation is roost important factor in the MPPT of PV system. That is nonlinear, aperiodic and complicated. NN was widely used due to easily solving a complex math problem. The paper consists of solar radiation source, DC-DC converter, DC motor and load(cf, pump). NN algorithm apply to DC-DC converter through an adaptive control of neural network, calculates converter-duty ratio using an adaptive control of NN. The results of an adaptive control of NN compared with the results of converter-duty ratio which are calculated mathematical modeling and evaluate the proposed algorithm. The experimental data show that an adequacy of the algorithm was established through the compared data.

THAMS CLINIC CAMP 프로그램을 통한 융합인재 양성 방안 연구

전영선(Young-Sun Jun),김태동(Tae-Dong Kim),서태원(Taewon Seo) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.6

본 프로그램에 참여한 학생들은 창의력을 발휘하고 문제해결 능력을 배울 수 있게 된 것 같다고 의견을 모았으며, 스토리텔링 프로젝트 수행과정을 통해 고정 관념과 틀에 박힌 단순한 사고에서 벗어나 다양하고 창의적인 발상을 할 수 있는 좋은 기회였다고 말을 한다. 또한 THAMS CLINIC CAMP는 학생들에게 각자 전공과 타 학문의 연관성과 융합에 대한 눈을 뜨고 생각하게 하는 계기가 되었다. 2년간 본 프로그램을 운영하면서 학생들의 반응은 학생들에게 분절된 학문 간의 벽을 허무는 융합교육에 대한 인식의 전환이 일어났다는 점과 학생들이 과거를 이해하고 현재를 재조명하며 앞으로 펼쳐진 미래를 올바른 방향으로 설계할 수 있는 생각을 가질 수 있는 기회를 제공해 주었다는 것이다. Students participating THAMS CLINIC CAMP told that they can learn creativity and problem-solving skill. They also told they have good opportunity to have diverse and creative ideas away from stereotype and stereotypical through the storytelling project. THAMS CLINIC CAMP offers the opportunity to students for the relevance of their major to others. This program provides that the walls between academic education are broken and students understand the past and present, and can design thinking the future in the right direction.

논문 : 웹 개발 프로세스에 기반 한 사용성 평가 방법론 최적화 연구

전영선 ( Young Sun Jun ),노승완 ( Seung Wan Roh ) 디자인융복합학회 2013 디자인융복합연구 Vol.12 No.2

인터넷의 등장과 더불어 정보통신기술의 발전으로 지금의 웹 시장은 최근 몇 년 사이 사회·문화적으로 큰 성장으로 이루고 있다. 웹 시장의 발전과 함께 웹사이트 사용성이 더욱 중요시 되었으며, 웹 사용성 평가에 대한 관심 또한 높아지고 있다. 하지만 웹 사용성 평가는 초기 소프트웨어 개발 분야에서 발전된 평가 방법론들을 바탕으로 적용되어 왔기 때문에 보다 적합하고 체계적인 방법론 연구의 노력이 필요하다. 이에 본 연구는 웹 사이트 기반 어플리케이션의 단계별 사용성 평가 방법론을 재 정의하는데 의의가 있다. 현재 웹 사용성 평가 프로세스의 기존 개발된 연구는 찾아보기 어렵기 때문에 이러한 연구를 위해 웹 개발 프로세스의 문헌을 참고하여 웹 사용성 수행의 특성을 고려한 새로운 프로세스를 개발하였다. 또한 사용성 평가 기준을 참고하여 사용성 평가 방법의 선택을 위한 선정기준을 도출하였다. 이렇게 도출된 웹 사용성 평가 프로세스와 선정기준에 적합한 방법론 구축을 위해 매트릭스 방식을 적용하여 시뮬레이션을 진행하였다. 매트릭스의 구성으로 행(x)축은 ‘웹 사용성 평가 프로세스 별 선정기준’을 그 기준으로 삼고, 열(y)축은 수집된 ‘사용성 평가 방법론’을 나열하여 평가 방법이 선정기준에 대해 얼마만큼 부합되는가에 대한 점수를 측정한다. 그 결과에 따라 웹사이트 사용성 평가 방법론이 하나의 툴로 완성이 된다. 이러한 매트릭스는 프로젝트나 향후 다른 연구의 웹 사용성 평가에 앞서 사용성 평가자의 입장에서 보다 더 효율적이고 논리적인 사용성 평가 방법론을 도출 할 수 있는 가이드를 제공할 것이다. Due to the advancement of information and communications technology and the introduction of the Internet, web markets have emerged in the recent years in both social and cultural aspects. In addition to the development of the domestic web markets, evaluations of web-site usability have become more important in the market field. Such evaluations are based on the assessment methodologies of earlier software development fields; thus, a more appropriate and systematic approach to evaluating the processes are necessary for the study of web-usability. The primary aim of this study is to redefine the step-by-step usability test methodology based on web-based applications. Until now, not much study of web-usability test has been made; thus, the following research is based on collection of data and literature review focusing on web-development process. In addition, guidelines for selection of web-usability tests were drawn in reference to the standards of usability test. Such developed web-usability evaluations were carried out by applying the matrix system where the X-axis represents the ‘evaluation standards of web-usability test’ while the Y-axis represents the statistical figures of how much the ‘web-usability test methodologies’ correspond to the values of web-usability evaluation standards; thus, resulting in the establishment of web-usability test as a complete tool. As a result, the following study will provide a fundamental guideline for the future study of web-usability evaluation as well as provide an efficient and logical methodology regarding web-usability evaluation.

경년열화된 철근콘크리트 전단벽의 지진응답에 영향을 미치는 변수들의 민감도분석

박준희,전영선,최인길,Park, Jun-Hee,Choun, Young-Sun,Choi, In-Kil 한국전산구조공학회 2011 한국전산구조공학회논문집 Vol.24 No.4

철근콘크리트 구조물은 타설 후 시간이 경과함에 따라 물리적인 요인과 화학적인 요인으로 인하여 열화가 진행된다. 열화된 구조물의 효율적인 구조해석을 수행하기 위하여 구조물의 거동과 밀접한 관련이 있는 중요열화변수를 정의하는 것은 필요하다. 본 연구에서는 경년열화된 철근콘크리트 전단벽의 중요변수를 분석하기 위하여 일계이차모멘트법을 이용하여 민감도해석을 수행하였다. 콘크리트의 경화현상을 고려하지 않을 경우 구조물의 열화성능이 과소평가될 수 있으므로 콘크리트의 경화에 따른 해석변수들의 민감도를 분석하였다. 열화된 전단벽에서 변수의 중요도는 토네이도 다이어그램으로 나타내었다. After a concrete is poured, reinforced concrete structures were distressed by physical and chemical factor over time. It is in need to define important variables related to structural behavior for effectively conducting seismic analysis of structures with age-related degradation. In this study, a sensibility analysis using the first-order second moment method was performed to analyze an important variables for the reinforced concrete shear wall with age-related degradation. Because the seismic capacity of aging structures without a concrete hardening effect can be underestimated, the sensibility of analysis variables was analyzed according to the concrete hardening. Important variables for RC shear wall with age-related degradation was presented by using the tornado diagram.

FNN에 의한 태양광 발전의 MPPT 제어

정철호(Chul-Ho Jung),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),전영선(Young-Sun Jun),김도연(Do-Yeon Kim),정병진(Byung-Jin Jung),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

The paper proposes a novel control algorithm for tracking maximum power of PV generation system. The maximum power of PV array is determinated by a insolation and temperature. Prior considered the term in PV generation system is how maximum power point is accurately tracked. The paper proposes a FNN(Fuzzy Neural-Network) control algorithm so as to accurately track those maximum power points. The proposed control algorithm comprises the antecedence part of fuzzy rule and clustering method, multi-layer neural network in the consequent part. FNN has the advantages which are depicted both high performance and robustness in Fuzzy control and high adaptive control in Neural Network Specially, it can show the outstanding control performance for parameter variations appling to non-linear character of PV array. In paper, the tracking speed and the accuracy prove the validity through comparing a proposed algorithm with a conventional one.

인공지능 SV-PWM 제어를 이용한 SynRM의 고성능 제어

김도연(Do-Yeon Kim),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정철호(Chul-Ho Jung),정병진(Byung-Jin Jung),전영선(Young-Sun Jun),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

This paper is proposed a high performance speed control of the synchronous reluctance motor through the artificial intelligent SV-PWM. SV-PWM is controlled using fuzzy control that is artificial intelligent control. SV-PWM can be maximum used maximum dc link voltage and is excellent control method due to characteristic to reducing harmonic more than others. Fuzzy control has a advantage which can be robustly controlled. Simulation results are presented to show the validity of the proposed algorithm.

태양광 발전 추적 시스템의 효율 향상을 위한 그림자 보상알고리즘 개발

고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정철호(Chul-Ho Jung),김도연(Do-Yeon Kim),정병진(Byung-Jin Jung),전영선(Young-Sun Jun),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

In this paper a novel tracking system is described, regarding the influence of shadow between array, aimed at improving the efficiency of PV tracking system. The loss by influence of those shadow can be compensated for by means of control algorithm of the tracking device. The paper suggests a method controlling an altitude for length which is received the shadow influence of PV array. By using an azimuth of current solar position and the length between arrays, the controller of tracking device is able to calculate the length between actual arrays and make a comparison of the shadow length at a specific time with the length between arrays. In the paper, we develop the control algorithm able to minimize the loss caused by the influence of shadow on the PV tracking system, and compared this with conventional output system. The controller has been tested in the laboratory with proposed algorithm and shows excellent performance.

기후환경 변화에 대한 태양광 추적 시스템의 효유로치적화 제어

최정식(Jung-Sik Choi),고재섭(Jae-Sub Ko),정철호(Chul-Ho Jung),김도연(Do-Yeon Kim),정병진(Byung-Jin Jung),전영선(Young-Sun Jun),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

In this paper proposes a novel tracking algorithm regarding the power loss when operating a tracking system for a rapidly changing insolation to improve the power of PV tracking system. In case of tracking an azimuth and altitude of the sun in realtime, therefore, the actual PV power is less increasing than the power of tracking system fixed a specific position. To reduce the power loss, this paper proposes a nonel control algorithm of the tracking system. The paper is analyzed efficiency about conventional PV tracking method, comparing proposed algorithm with high performance method. We show propriety of proposed algorithm by means of the demonstrable study.

FNN-PI를 이용한 IPMSM의 효율최적화 제어

정병진(Byung-Jin Jung),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정철호(Chul-Ho Jung),김도연(Do-Yeon Kim),전영선(Young-Sun Jun),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월

Interior permanent magnet synchronous motor(IPMSM) has become a popular choice in electric vehicle applications, due to their excellent power to weight ratio. In order to maximize the efficiency in such applications, this paper proposes the FNN(Fuzzy Neural-Network)-PI controller. The controllable electrical loss which consists of the copper loss and the iron loss can be minimized by the error back propagation algorithm(EBPA). This paper considers the parameter variation about the motor operation. The operating characteristics controlled by efficiency optimization control are examined in detail.