직·병렬공진을 이용한 시분할형고주파 인버터의 특성해석

조규판(Kyu-Pan Cho),이경호(Kyoung-Ho Lee),노채균(Chae-Gyun Ro),배영호(Young-Ho Bae),심광렬(Kwang-Yeal Sim) 한국조명·전기설비학회 2000 한국조명·전기설비학회 학술대회논문집 Vol.2000 No.-

The time sharing type high frequency inverter using serial-parallel resonant to give VVVF function in the inverter used as power source of induction heating at high frequency is presented in this paper. This proposed inverter can reduce distribution of the switching current because of using the current of serial resonant circuit to the input current of the parallel one. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, according to the calculated characteristics value, a method of the circuit design and operating characteristics of the inverter is proposed. In addition, this paper proves the validity of theoretical analysis through Simulation. This proposed inverter show that it can be practically used in future as power source system for induction heating application, DC-DC converter etc.

일반논문 : 고등학생용 눈치척도 개발 및 타당화

조규판 ( Gyu Pan Cho ),권태우 ( Tae Woo Kwon ),김경원 ( Kyung Won Kim ) 인하대학교 교육연구소 2016 교육문화연구 Vol.22 No.1

본 연구의 목적은 고등학생용 눈치척도를 개발하고, 그 타당성을 검증하는 것이다. 문헌연구를 통하여 눈치를 구성하는 요인으로 정서적 눈치, 행동적 눈치를 설정한 후 이들 구성요인에부합되는 197문항을 제작하였다. 제작된 문항 중 내용이 유사한 문항을 수정하거나 삭제하여 95 문항을 1차 예비문항으로 선정한 다음 전문가의 검토를 거쳐 정서적 눈치 15문항, 행동적 눈치10문항 총 25문항을 선정하였다. 이들 문항으로 구성된 검사를 173명의 고등학생에게 실시하여문항과 구성요인간의 상관분석과 요인분석을 실시한 결과 정서적 눈치 7문항, 행동적 눈치 6문항의 2개요인 13개 문항이 최종 문항으로 선정되었다. 눈치척도는 두 구성요인과 척도의 총점간의 상관이 높아 구인타당성이 입증되었으며, 문항내적합치도가 높아 신뢰도가 입증되었다. 따라서 본 연구에서 개발된 눈치척도는 고등학생들의 눈치를 측정하는 도구로써 적합한 것으로 판단된다. The purpose of this study is to develop the Sense of Wit Scale for high school students, and examine the validity and reliability. Two factors of sense of wit were identified based on the results of literature review, which are emotional sense of wit and behavioral sense of wit. 197 items that represented the two factors were developed based on the result of literature review. 95 items were selected from the original questionnaire by researchers. 25 items, which are 15 items for emotional sense of wit factor and 10 items for behavioral sense of wit factor, were selected from 95 items based on review of a professional. 173 high school students were sampled for the study. Factor analysis confirmed the two factors with 13 items that are 7 items for emotional sense of wit factor 6 items for behavioral sense of wit factor. To examine the construct validity of the test, correlation coefficient between two factors and total score of the test was computed. Each factor was highly correlated with total score of the test. The Sense of Wit Scale also had high internal consistency. Therefore, the Sense of Wit Scale has high validity and reliability so that it can be used to measure sense of wit for high school students.

The Effects of Home Environment, Parents Characteristics, and Student Characteristics on Reading Achievement in Sweden

조규판(Cho Gyu-Pan) 한국비교교육학회 2004 比較敎育硏究 Vol.14 No.2

이 연구의 목적은 구조방정식(SEM)을 이용해서 가정환경 및 부모특성, 학생의 심리적 특성, 그리고 학생의 읽기 성취도간의 관계를 설명하는 모형을 만드는데 있다. 이 연구를 위해 국제학업성취도평가협회(IEA)가 2001년에 실시한 국제읽기능력향상연구(PIRLS) 35개국의 자료 중 Sweden 5,052명의 학생과 그들의 부모들에게 실시했던 자료를 사용하였다. 연구의 결과 세 변인을 설명해주는 모형을 개발하였다. 가정환경 및 부모특성은 아동의 읽기성취도에 직접, 간접적으로 영향을 미치는 것으로 나타났다. 학생의 심리적 특성인 읽기태도 및 읽기자아개념도 그들의 읽기성취도에 긍정적으로 영향을 미치는 것으로 나타났다. 이 연구의 결과는 학생들의 읽기성취도 향상에 관심이 있는 사람들에게 실제적인 정보를 제공하고 있다. The purpose of this study is to build a model that explains the relationships between and among the home environment and parents characteristics, student attitudes toward reading and reading self-concept, and reading achievement. The database of 5,052 students and their parents from Sweden in the PIRLS were used for this study. The results provide a model fit among three variables. It shows that the variable of the home environment and parents characteristics effect directly and indirectly on reading achievement. Student attitudes toward reading and reading self-concept is a variable that effects on reading achievement. The results provide practical information to people who are interested in improving student reading achievement.

중학생의 기질 및 원가족의 정서적 건강성이 자아분화에 미치는 영향

조규판(Cho Gyu Pan),송근혜(Song Geun Hea) 학습자중심교과교육학회 2010 학습자중심교과교육연구 Vol.10 No.3

본 연구의 목적은 중학생을 대상으로 기질 및 원가족의 정서적 건강성이 자아분 화에 미치는 영향을 알아보는데 있다. 이를 위해 중학생들에게 기질, 원가족의 정서 적 건강성, 그리고 자아분화 검사를 실시하여, 이들 변인 간의 상관관계를 분석하 고, 기질 및 원가족의 정서적 건강성이 자아분화에 미치는 상대적 영향력을 알아보 았다. 본 연구를 통해 나타난 결과는 다음과 같다. 첫째, 기질과 자아분화와의 상관관계에서 기질의 정서성과 자아분화 간에는 유 의미한 부적상관을 있는 것으로 나타났다. 둘째, 원가족의 정서성과 자아분화 간에는 유의미한 정적상관이 있는 것으로 나 타났다. 셋째, 기질 및 원가족의 정서적 건강성이 자아분화에 미치는 상대적 영향력을 알 아본 결과 기질의 하위요인인 정서성, 활동성과 원가족의 정서적 건강성의 하위요 인인 자율성이 중학생의 자아분화를 유의미하게 설명하는 독립변인으로 나타났으 며, 이들 세 변인이 자아분화의 약 50%를 설명하는 것으로 나타났다. 즉 선천적인 경향을 가지는 기질의 하위요인들은 정서적 감정과 지적인 사고의 조화로운 성숙 을 내포하는 자아분화 수준에 부적 관계를 가지며, 자신의 행동에 대한 책임감 및 타인에 대한 이해심과 신뢰감을 내포하고 있는 원가족의 정서적 건강성이 중학생 의 자아분화 수준에 정적 관계를 나타냄으로써, 중학생의 자아분화 성숙에 도움을 줄 수 있는 기질에 따른 개인차를 고려한 가족 프로그램 및 가족의 정서적 건강성 을 높일 수 있는 프로그램의 필요성을 제시하고 있다. The purpose of this study is to examine the effect of the temperament and the emotional health of the family of origin on self-differentiation of middle school students. 135 middle school students have been surveyed using the Scale of Emotionality, Activity, and Sociability(EAS), Family-of-Origin Scale(FOS), and the Scale of Self-Differentiation. The conclusions based on result and discussion are as follows. First, the emotionality of temperament showed a significant negative correlation with self-differentiation. We have to consider the individual differences of temperament to increase the level of self-differentiation of middle school students. Second, the emotionality of the family of origin showed a significant positive correlation with the self-differentiation. The middle school students need to develop and keep balance of the spirit of cooperation and independence to increase the level of self-differentiation of middle school students. Third, the sub-factors of the emotionality and activity from temperament and autonomy and intimacy from the healthiness of the family of origin significantly explain the self-differentiation of middle school students. The sub-factors of temperament that have an inborn tendency had negative relations with the self-differentiation that implies a harmonized maturity between emotional feelings and intellectual thinking, while the emotional healthiness of the family of origin that implies the responsibility for one s own behavior and the understanding and trust toward others had a positive relation with middle school students self-differentiation level. Conclusively, the results of this study suggest that individual differences based on middle school students temperament need be considered in developing family programs and other approaches customized for them.

시분할형 부하병렬 고주파 공진 인버터의 특성해석

조규판(Gyu Pan Cho),원재선(Jae Sun Won),김이국(Lee Kook Kim),김동희(Dong Hee Kim),노채균(Chae Gyun Ro),심광렬(Kwang Yeal Sim),원규식(Gyu Sik Won) 영남대학교 정보통신연구소 2000 정보통신연구소논문집 Vol.7 No.1

Half-Bridge형 시분할방식 고주파 공진 인버터의 특성해석에 관한 연구

조규판(G. P. Cho),신금향(G. H. Shin),원재선(J. S. Won),김동희(D. H. Kim),노채균(C. G. Ro),심광렬(K. Y. Sim),배영호(Y. H. Bae) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7

A high frequency resonant inverter consisting of three unit half-bridge serial resonant inverter used as power source of induction heating at high frequency is presented in this paper. As a output power control strategy, time-sharing gate control method is applied. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, according to the calculated characteristics value, a method of the circuit design and operating characteristics of the inverter is proposed. This paper proves the validity of theoretical analysis through the experiment. This proposed inverter show that it can be practically used in future as power source system for induction heating application, DC-DC converter etc.

청소년용 학습몰입척도 개발 및 타당화

조규판(Cho, Gyu-Pan),방희원(Bang, Hui-Won) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.22

본 연구의 목적은 청소년용 학습몰입척도를 개발하고 타당성을 검증하는 것이다. 이론 및 선행연구의 분석을 통해 학습몰입을 구성하는 요인으로 인지적 몰입, 정의적 몰입, 행동적 몰입의 세 요인을 추출하였으며, 구성요인에 부합하는 80문항을 제 작하였다. 측정하는 내용이 유사한 문항은 수정 또는 삭제하여 60문항을 1차 예비문항으로 선정하였다. 1차 예비문항에 대해 전문가 2인에게 내용타당도를 검증받아 인지적 몰입 13문항, 정의적 몰입 13문항, 행동적 몰입 14문항의 40문항을 본 조사를 위한 2차 예비문항으로 선정하였다. 부산시 중·고등학생 401명을 대상으로 본 조사를 실시한 뒤 타당화 과정을 거쳐 인지적 몰입 9문항, 정의적 몰입 9문항, 행동적 몰입 8문항의 3개 요인 총 26문항이 학습몰입척도의 최종 문항으로 선정되었다. 학습 몰입척도는 세 구성요인간의 상관이 높아 구인타당성이 입증되었으며, 문항내적합치도가 높아 신뢰도가 입증되었다. 따라서 본 연구에서 개발된 학습몰입척도는 청소년들의 학습몰입을 측정하는 도구로써 적합한 것으로 판단된다. The purpose of the study was to development the Learning Flow Scale for adolescent and examine its validity and reliability. Three sub-factors of learning flow were identified based on the result of literature review, which are cognitive flow, emotional flow, and behavioral flow. 80 items that represented the three factors were developed based on the result of literature review. 60 items were selected as the first preliminary survey by modifying or deleting similar sentences, and then the content validity was reviewed by two expert. As a result, 40 items were selected as 13 cognitive, 13 emotional, 14 behavioral learning flow. 401 middle or high school students in Busan were sampled for this study. Correlation analysis and factor analysis confirmed the three factors with 26 items that are 9 items for the cognitive learning flow, 9 items for emotional learning flow, and 8 items for behavioral learning flow. To examine the construct validity of the scale, correlation coefficient among three factors and total score of the scale was computed and they were highly correlated each other. The scale also had high internal consistency reliability. Therefore, the Learning Flow Scale has high validity and reliability so that it can be used to measure learning flow for adolescents.

교사의 자기효능감(self-efficacy)과 자율성(self-determination)이 학생의 동기에 미치는 영향

조규판 ( Gyu Pan Cho ) 한국교육학회 부산지회 2004 釜山敎育學硏究 Vol.17 No.1

순시전류합성형 부하병렬 고주파 공진 인버터의 특성해석

조규판(Kyu-Pan Cho),원재선(Jae-Sun Won),이봉섭(Bong-Seob Lee),심광렬(Kwang-Yeal Sim),배영호(Young-Ho Bae) 한국조명·전기설비학회 2002 한국조명·전기설비학회 학술대회논문집 Vol.2002 No.-

This paper describes the instantaneous current resultant type load parallel high frequency resonant inverter consisting of three unit half-bridge serial and parallel resonant inverter can be used as power source of induction heating. This proposed inverter can reduce distribution of the switching current because of using the current of serial resonant circuit to the input current of the parallel one. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, the principle of basic operating and the its characteristics are estimated by the parameters such as switching frequency(μ), load resistance(λ). Experimental results are presented to verify theoretical discussion. This proposed inverter will can be practically used as a power supply in various fields as induction heating application DC-DC converter etc.

대학생 핵심역량 진단검사 개발 및 타당화

조규판(Cho, Gyu-Pan),주희진(Ju, Hee-Jin),최진아(Choi, Jin-A),방희원(Bang, Hui-Won) 동북아시아문화학회 2018 동북아 문화연구 Vol.1 No.55

The purpose of the study is to develop and validate the Core Competency Diagnostic Assessment for College Students. Six factors of core competency of college students were identified based on the results of literature review, which are expertise, character, creativity, challenge, glocal, and communication. Each factor consists of four subfactors. Subfactors of expertise competency are knowledge exploring ability, information literacy, learning strategy, and major literacy. Subfactors of character competency are conscientiousness, sence of consideration, human being understanding, and social responsibility. Subfactors of creativity competency are problem solving ability, analysis & inference ability, critical thinking, and technology acceptance & literacy. Subfactors of challenge competency are leadership, self directed learning ability, self-management, and goal setting & practical ability. Subfactors of glocal competency are cultural inclusiveness, global citizenship, ability of foreign language, and local symbiosis. Subfactors of communication competency are interpersonal relationship ability, communication ability, conflict management ability, and teamwork. 348 items from six factors, which consist of four subfactors, were developed. 701 college students were selected for the study, and 606 students’ data were analyzed. To examine the content validity, it is examined by a test professional from department of education and a professor from department of Korean. Factor analysis for each factor confirmed each sub-factor. To examine the reliability the internal consistency (Cronbach α) for each factor was computed. Based on these process 240 items were decided as items of the Core Competency Diagnostic Assessment for College Students. Each factor has high construct validity, each items are represented the each factors, and each facotr has internal consistency.