자유탐구 기법을 활용한 수업이 과학 창의적 문제해결력 및 과학적 탐구능력에 미치는 효과

이용섭,김순식,이상균 대한지구과학교육학회 2011 대한지구과학교육학회지 Vol.4 No.2

The purpose of this study is to make a Result analysis on the Free Inquiry Method of Elementary school student. Also, this study investigates how free inquiry activities effect the science creative problem solving ability and science process skills of Elementary school student. For this study 150, third year, elementary School students from Busan City were selected. The Inquiry examined the effectiveness of each of the following free inquiry methods: the Program Based Learning method, the Project method, the Independent Investigation Method, the Small Group Inquiry Method, and the Science Notebooks Method. The students were divided into groups in which they incorporated the respective methods into their practice. Test showed the following results: First, the Science Notebooks Method activities proved to be much more effective than the Program Based Learning method, the Project method, the Independent Investigation Method, the Small Group Inquiry Method, and the Science Notebooks Method in terms of developing on science creative problem solving ability. Second, the Project method activities proved to be much more effective than the Program Based Learning method, the Independent Investigation Method, the Small Group Inquiry Method, the Science Notebooks Method in terms of developing on science process skills.

초등예비교사의 프로젝트 학습이 자기주도적 학습능력 및 창의적 인성에 미치는 효과

이용섭 대한지구과학교육학회 2019 대한지구과학교육학회지 Vol.12 No.2

이 연구의 목적은 초등예비교사에게 메이커 교육을 도입한 프로젝트 학습으로 자기주도적 학습능력 및 창 의적 인성에 미치는 효과를 알아보는 것이다. 본 연구는 2019년 3월부터 4월까지 8주간의 실험처 치 기간을 설정하였으며, 연구에 참여한 학생들은 B 교육대학교 2학년 1학기에 재학 중이고 ‘과학과 교재 연구 1’ 강좌를 수강하는 심화과정 3개 반 75명의 초 등예비교사를 대상으로 연구집단을 구성하였다. 연구집단의 실험처치는 메이커 교육으로 창의적인 산출물을 만들어 내는 과정의 수업이 이루어졌다. 모 둠별로 창의적인 산출물을 만들기 위해 주제를 설정하 였으며, 주 도구인 3D펜으로 작업을 하였고 리사이클 재료를 활용하였다. 창의적인 산출물이 완성되면 모둠 별로 실물을 제시하면서 발표를 하였다. 연구의 결과는 다음과 같다. 첫째, 초등예비교사의 프로젝트 학습은 자기주도적 학습능력에 미치는 효과가 있었다. 둘째, 초등예비교사의 프로젝트 학습은 창의적 인 성에 미치는 효과가 있었다. 셋째, 초등예비교사는 프로젝트 학습에 대해 흥미 를 느끼며 인식에 긍정적인 반응을 보였다. The purpose of this study is to investigate the effect of the pre-service teacher's maker project learning on self -directed learning ability and creative personality. This study established an eight-week period of experimental treatment from March to April 2019, and the students who participated in the study formed a research group of 75 students in three of their advanced classes who are attending the second semester of B University of Education and taking courses in 'Teaching Research 1'. The experimental treatment of research groups was conducted by the process of producing creative outputs through training of manufacturers. The experimental group of the study group was a process of producing creative output through maker education. The theme was set up to create creative output by group, worked with the main tool, 3D pen, and utilized the recycling material. When the creative output is completed, it is announced by presenting the actual product in each group. The results of the study are as follows. First, project learning by pre-service teachers had an effect on self-directed learning ability. Second, project learning by pre-service teachers had an effect on creative personality. Third, pre-service teachers was interested in learning about the project and responded positively to the students' perception.

파괴기준이 불연속 안반내 원형공동의 소성거동 및 보강에 미치는 영향

이용섭,문현구 한국자원공학회 2002 한국자원공학회지 Vol.39 No.3

Existing studies in predicting the behavior of rock mass as a consequence of tunnelling often assume that the medium is isotropic. However, if the rock mass contains non-random discontinuities, the strength depends on the orientation of discontinuities. And the displacement around a tunnel varies significantly within such a rock mass. Therefore, in this study, the anisotropic strength and displacement are studied using different failure criteria, and a theoretical solution of displacement around a circular tunnel in a hydrostatic stress state is introduced. Also, a support design is studied to construct a stable and economical tunnel. 연구에서는 터널굴착으로 야기되는 암반의 거동을 예측함에 있어서 암반을 등방성 매질로 가 정하였다. 그러나 암반에 일정한 방향성을 갖는 불연속면이 존재할 경우 암반의 강도는 불연속면의 방향에 따 라 달라지며, 이러한 암반에 터널을 굴착할 경우 터널에서의 위치에 따라 변위가 달라진다. 따라서 본 연구에 서는 암반에 일정한 방향성을 갖는 불연속면이 존재할 경우 파괴조건식에 따른 강도와 변위의 이방성 거동에 관한 연구를 수행하였으며, 외부압이 정수압으로 작용하는 암반에 원형터널을 굴착할 경우 파괴조건식에 따 른 변위의 이론해를 유도하였다. 그리고 이러한 암반에 안전하고 경제적인 터널을 건설하기 위한 보강설계에 관한 연구를 수행하였다.

원격과학수업의 활용도 및 문제점, 학습자 행동분석

이용섭,Lee, Yong-seob 대한지구과학교육학회 2020 대한지구과학교육학회지 Vol.13 No.2

본 연구의 목적은 원격과학수업의 활용도 및 문제점과 학습자 행동분석을 알아보는데 있다. 본 연구는 3월부터 6월까지 16주간에 거쳐 강의가 이루어졌으며 수강학생들에게 강의평가 및 설문조사를 하였다. 연구 대상은 B 교육대학교의 '초등과학교재연구 1' 강좌를 수강하는 128명을 대상으로 2020년 3월부터 6월까지 비대면 강의를 통해 강의평가 및 면담을 통해 조사하는 것이다. 이에 대한 연구결과는 다음과 같다. 첫째, 학습자의 입장에서는 대학의 LMS시스템 활용이 좋았다. 둘째, 교수자의 과학 자료제시가 온라인 시스템에서 원활하게 운영되는데 효율적이지 않았다. 다양한 플랫폼의 장단점을 살펴보면 교육의 적합성에 따라 달라질 수 있지만 전문적인 강의 지원방식인 LMS 시스템을 보다 학습자의 요구에 맞추어 업그레이드 한다면 보다 높은 교수자와 학습자의 만족도가 높을 것이다. The purpose of this study is to investigate the usages and problems of distance science learning and learner behavior analysis. This study established an Sixteen-weeks period of experimental treatment from March to June 2020, and the students who participated in the study formed a research group of 128 students in 2nd grade of their advanced classes who are attending the second semester of B university of education and taking courses in 'teaching research 1'. B university of education is singleness class that doesn't have compare group, so this study is constituted only study group. The results of the study were as follows. First, The students who took science learning remotely liked using the university's LMS system. Second, it was not efficient for the faculty member's scientific data presentation to operate smoothly in the online system. Third, it is necessary to set various educational platforms as a standardized platform. Looking at the pros and cons of various platforms may vary depending on the suitability of education, but if the LMS system, which is a professional teaching support method, is upgraded to meet the needs of learners, the satisfaction of higher instructors and learners will be higher.

과학과의 SGIM 적용 수업이 과학적 탐구능력 및 과학에 대한 태도에 미치는 효과

이용섭,이건의 대한지구과학교육학회 2011 대한지구과학교육학회지 Vol.4 No.1

The purpose of this study is to examine the effects of small group inquiry skills on improving science process skills and attitudes toward science in elementary school science. The research questions of this study were as follows. First, effects of small group inquiry skills on improving science process skills in elementary school science. Second, effects of small group inquiry skills on improving attitudes toward science in elementary school science. The subjects of this study is two classes from 6th grade elementary classes in Busan. The experiment class practiced small group inquiry skills, while the control class practiced self inquiry. To verify the effect of the experiment, ANOVA was conducted. The main findings of this study are as follows. First, the small group inquiry skills gave a significant influence on increasing the science process skills, including the basic science process skills and the integrated science process skills, of students. Especially, among subordinate factors of science process skills between groups, it was effective to increase abilities of observing, reasoning, interpreting data, formulating hypothesis. It is necessary for teachers to make an effort to teach according to steps of the small group inquiry skills and to support inquiry activities, in order to increasing the science process skills. However, frequency of additional lessons have a little influence on increasing the science process skills. Second, there is meaningful change in the attitudes toward science for those who studied the small group inquiry skills. Also, they affected subordinate factors of the attitudes toward science, like the attitudes toward science inquiry, the happiness about science class. This study shows that the small group inquiry skills give a positive influence on the science process skills and attitudes toward science in elementary school science.

위상조절 왜곡발생기를 가진 아날로그 전치왜곡기를 이용한 Doherty Amplifier의 선형성 개선

이용섭,정윤하 대한전자공학회 2007 電子工學會論文誌-SC (System and control) Vol.44 No.2

This paper represents a Doherty amplifier (DPA) with analog predistorter (PD) to improve the linearity of the DPA while preserving the high efficiency. A third-order PD cancels fifth-order intermodulation (IM5) as well as third-order intermodulation (IM3) components by their same phase difference in the PD and DPA. This is accomplished by independently controlling their phase by using the phase-controlled error generator in the PD. Also, we confirm the phase-control ability of the error generator experimentally with a simple and accurate phase measurement setup. For experimental verification, a third-order PD has been implemented and tested in a 180-W DPA at the wide-band code division multiple access (WCDMA) band of 2.11-2.17 GHz. Two-tone test results show that significant cancellation of IM3 and IM5 components can be obtained. For four-carrier WCDMA applications, significant adjacent channel leakage ratio (ACLR) improvement is achieved over a wide range of output power levels. This technique is cost-effective and convenient due to its simple structure, compact size, and three control parameters. 본 논문은 Doherty 증폭기의 높은 효율을 유지하면서 선형성을 개선하기 위해 아날로그 전치왜곡기를 가진 Doherty 증폭기를 보여준다. 3차 전치왜곡기는 전치왜곡기와 Doherty 증폭기에서 3차와 5차 혼변조 성분이 이루는 위상차를 같게 만들어 3차뿐만 아니라 5차 혼변조 왜곡신호를 동시에 상쇄시킨다. 이것은 전치왜곡기에서 위상조절 왜곡발생기를 이용하여 3차와 5차의 위상차를 독립적으로 조절함으로서 이루어진다. 또한, 간단하고 정확한 위상 측정 장치를 이용하여 왜곡발생기의 위상조절 능력을 실험적으로 확인한다. 실험적인 검증을 위해, 3차 전치왜곡기는 2.11-2.17 GHz의 WCDMA 대역에서 180-W Doherty 증폭기와 구현된다. 투톤 실험결과는 3차와 5차 혼변조 왜곡성분이 크게 상쇄될 수 있음을 보여준다. 또한, 4-carrier WCDMA 응용에서도 넓은 출력 범위에서 상당한 ACLR이 개선된다. 이 기법은 간단한 구조, 작은 크기, 세 가지의 조절 파라미터 때문에 가격 효율적이며 편리하다.

초등학교 예비교사들의 천문분야에 대한 개념이해 조사

이용섭,김순식,이상균,남윤경,주은진,이혜림 대한지구과학교육학회 2011 대한지구과학교육학회지 Vol.4 No.3

The objective of the research which it sees to investigate and teachers elementary school preparation should have had what kind of line concept from astronomical field, to interpret. The research questions of this study were as follows. It tried to observe the result which investigates the line concept of teachers preparation in about conceptual gain and loss degree of the astronomical field which it comes to reveal from the research which it sees. The students where are not the scientific department of pedagogy and the scientific department of pedagogy were visible a relatively high gain and loss degree from the earth shape and phase change of month during one night. Also the part which it thinks rhinologically was many. When it presents the type, with afterwords it is same. First, The endurance rotates in about location change of month during various day, it revolves with the direction where also the month is the same type which does not know a fact, The students do not recognize well in about the shape of month changing everyday the type. The students does not understand the location which the month when it follows at time is accurate well the type was many. Second, when it tries to compare a scientific department of pedagogy 3 grade and a rhinologic department of pedagogy 3 grade, the gain and loss degree of most scientific department of pedagogy 3 grade is appearing highly.

우울증 치료제의 개발동향

이용섭 한국신약개발연구조합 1998 신약뉴스 Vol.6 No.3

分娩第三期의 處置

李庸燮 中央醫學社 1968 中央醫學 Vol.15 No.6

2007년 개정 과학과 교육과정에서 자유탐구 방안

이용섭,박미진 대한지구과학교육학회 2010 대한지구과학교육학회지 Vol.3 No.1