• 한국자기학회:학술대회 개요집
• /
• 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
• /
• pp.54.1-54.1
• /
• 2007

• 과학교육연구지
• /
• 제44권2호
• /
• pp.214-224
• /
• 2020

물리 이미지 및 관심은 물리 학습에 영향을 미치는 요인 중에 하나이다. 공과대학 신입생은 고등학교 때에 다양한 학습 환경 조건에서 대학에 입학한다. 대학 물리교육을 위하여 공과대학 신입생의 특성에 따른 물리 이미지 및 관심을 조사할 필요가 있다. 이 연구는 공과대학 신입생의 성별과 고등학교 때 물리 이수 여부에 따른 물리 이미지와 관심 여부를 조사하여, 공과대학 학생의 대학 물리 학습에 대한 교육적 시사점을 논의한다. 연구 대상은 공과대학 1학년 공과 계열 286명, 정보기술 계열 242명, 건설환경 계열 136명 총 664명이다. 분석 내용은 공과대학 신입생의 성별과 고등학교 때 물리 이수 여부에 따른 물리 이미지 및 관심 여부를 분석한다. 분석결과 첫째, 물리 이미지는 공과대학 신입생의 물리 이수 여부에 따라 유의미한 차이가 나타났다. 고등학교 때 물리를 배우지 않은 학생의 물리 이미지 점수가 물리I 또는 물리I,II를 배운 학생보다 높게 나타났다. 둘째, 물리 관심 여부는 성별과 물리 이수 여부에 따라 유의미한 차이가 나타났다. 성별에서는 남학생이 여학생보다 물리 관심이 높았고 고등학교 때 물리 이수 여부에서는 고등학교 때 물리를 이수하지 않은 학생이 물리를 이수한 학생보다 물리 관심이 높았다. 끝으로 공과대학 학생의 대학 물리 학습에 대한 교육적 시사점을 논의한다.

• 한국과학교육학회지
• /
• 제11권2호
• /
• pp.67-77
• /
• 1991

In this paper, current research papers on Physics Problem Solving were analyzed according to the types of research purpose, method, subject and content of Physics, by using 3 Proceedings and 4 kinds of Journal, that is, the International Workshop(1983, Paris, France) and Conference (1983, Utrecht, The Netherlands) and Seminar(1987, Cornell University, U. S. A.) on Physics Education, and Journal of Research in Science Teaching (1984-1990) and Science Education (1986-1990). and Inter national Journal of Science Education(l987-1988) and Cognitive Science(1989-1990). There were 98 research papers on Problem Solving and among them 37 papers on Physics Problem Solving were selected for analyzing. The results of analysis are as follows; 1) The studies on Model of Novice Student were 22(59%), And those on Model of Desired Preformance, on Model of learning and on Model of Teaching were all much the same. 2) The theoretical studies were 10(27%), and the experimental ones 27(73%). Among the experimental studies, there were 16(59%) by using the written test, and 7(26%) by using the thinking aloud method. 3) The studies about university students as subjects were 20(54%). Probably, it seems the reason that most of researchers on Physics Problem Solving were professors of university or graduate students. 4) Among the various fields of Physics, the studies on Mechanics were 24(63%) and those on E1ectromagnetics 6(16%). or graduate students.

• 한국과학교육학회지
• /
• 제9권1호
• /
• pp.53-67
• /
• 1989

General Physics CAI Program was developed for university science and engineering student. The program was restricted in the field of mechanics and was mainly aimed for individual tutorial. This project was supported by Government. Department of Education, physics attending their general physics classes in university. The program was written in BASIC and constructed by frame, 4 professors and 6 graduate students were involved in the project. Summary of this study is as follows. 1. The theory of CAI was illuminated from a new point of view to enhance usefullness of CAI. Also the structure of frame type CAI was studied. 2. The program was developed as follows 1) The program consisted of main program, pretest routine, tutorial routine, final test routine, and several other routines for program control. Whole program was written in BASIC. 2) 20 problems for pretest, 90 problems and subsequent hints and solutions for tutorial, 20 problems for final test were developed. 3) According to student's pretest result, tutorial course was routed through several different courses which contain different number of problems 4) The expected rate of achievment for final test was set to 75%. 5) Data of students response to problems including number of tries and time used were recorded for the purpose of achievment analisys 3. 22 students went through whole course and the results were as follows. 1) Pretest marks were widly distributed from 20 points to 100. It means that achievement of high school physics course were not enough. 2) Throughout tutorial course, students who had got higher mark in pretest answered correctly in the first trial at a higher rate of 78 %. Overall rate of correct answer in the second trial was distributed appropriatly. 3) Average mark of final test was 78.8 points, rather a higher rate of achievement than expected. This means that the program was constructed well.

• Journal of the Optical Society of Korea
• /
• 제18권6호
• /
• pp.633-638
• /
• 2014

We report experimental behaviors of condensed $^{87}Rb$ atoms responding to changes in the trap potential of the atomchip. The two-types of adiabatic and non-adiabatic overall changes were implemented by changing the ramp-down speed of the chip-wire current, which can dominantly modify the one-axis magnetic field gradient. Under the adiabatic process, a pure condensate stayed in the initial spin state and collectively oscillated with both monopole and dipole modes, while an atomic cloud above the critical temperature exhibited sound waves in a dense ultracold gas. On the other hand, Bose-Einstein condensate atoms with non-adiabatic perturbation were split into spatially different positions by spin states through spin-flip. We investigated the split ratio among spin states depending on final evaporation frequency. Potential changes, of course, cause collective oscillations regardless of the changing process.

• Bulletin of the Korean Chemical Society
• /
• 제15권2호
• /
• pp.112-114
• /
• 1994

When an electron is transferred to $C_{60}$, the bond structure is distorted due to the electron-lattice interaction and a polaron-like state is formed. The evolution process of the bond distortion is studied by the dynamical equation of atomic lattice, and time-dependent changes of the bond lengths are determined. Then it can be estimated that the relaxation time to form the polaron-like state is a fraction of a picosecond.

• 한국자기학회:학술대회 개요집
• /
• 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
• /
• pp.35.1-35.1
• /
• 2007

• 한국자기학회:학술대회 개요집
• /
• 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
• /
• pp.299.2-299.2
• /
• 2007

• 대한예방한의학회지
• /
• 제3권1호
• /
• pp.173-179
• /
• 1999

압력을 증가시켜가며 맥파를 측정하여 맥파의 진동수와 푸리에 진폭이 가해준 압력에 따라 어떠한 양상을 보이는지 조사하였다. 맥파의 기본 진동수는 압력에 따른 변화를 거의 보이지 않았으며, 푸리에 진폭은 개인의 체질에 따라 몇 가지 유형으로 분류될 수 있음을 보였다. 이 유형들을 다시 푸리에 진폭이 최고점에 이를 때의 압력의 크기와 최고점에서의 상태를 유지할 수 있는 압력의 범위에 따라 맥상의 여러 형태와 연관지을 수 있음을 보였다.

• 한국광학회지
• /
• 제13권5호
• /
• pp.449-454
• /
• 2002

$^85Rb\;D_1$ 전이선의 바닥준위 $F_g$=2에서 여기준위 $F_e$=3 전이를 이용하여 열린 원자계에서의 전자기 유도 흡수 현상을 관측하고, 전자기 유도 흡수에서의 비결맞음 펌핑 효과를 조사했다. 비결맞음 광원의 편광과 세기의 변화에 따른 전자기 유도 흡수에 대한 연구를 통해 비결맞음 광원의 편광에 따라서 자기부준위들 사이의 원자밀도 분포의 변화를 유도할 수 있고, 이러한 원자밀도 재분포 효과에 의해서 전자기 유도 흡수의 정도가 달라짐을 확인하였다