• Journal of Korean Society of Forest Science
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• v.100 no.3
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• pp.327-333
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• 2011

This study was aimed to specify health-related push and pull factors in mountain climbing and provide effective management strategy for mountain-based recreational setting through the identification of the reciprocal relationship between the push and pull factors. The results of survey by 440 mountain climbers at Mt. Dobong, Mt. Bukhan, Mt. Kwanak, and Mt. Cheonggye showed that three dimensions were respectively derived from health-related 15 push items and 11 pull items; therapeutic care, mental health, physical fitness in push factors and cultural, socio-economic, and natural environment in pull factors. According to an analysis of influence between push and pull factors, natural environment was reported to be the greatest influencing pull factor on therapeutic care and physical fitness, and socio-economic environment was on mental health.

• The Journal of the Acoustical Society of Korea
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• v.29 no.4
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• pp.229-236
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• 2010

Phase coherent modulation techniques in underwater acoustic channel can improve bandwidth efficiency and data reliability, but they are made difficult by time-varying intersymbol interference. This paper proposes an adaptive equalizer combined with phase estimator which compensates distortions caused by time-varying multipath and phase variation. The experiment in the East sea demonstrates phase coherent signals are distorted by time-varying multipath propagation and the proposed scheme equalizes them. Bit error rate of BPSK and QPSK are 0.0078 and 0.0376 at 300 meter horizontal distance and 0.0146 and 0.0293 at 1000 meter respectively.

• Journal of The Korean Association For Science Education
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• v.19 no.4
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• pp.653-664
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• 1999

This study was designed to develope an in-service training programme using Interactive $Physics^{TM}$ simulation for science teachers and to evaluate the effect of programme. The purposes of training programme are the improvement of scientific inquiry teaching ability as well as enhancement of the understanding of scientific concepts, inquiry skills, and the computer manipulation skills. The developed programme was implemented four times with 15 hours for each courses. The questionnaire for evaluating the programme after the last course showed that many teachers (1) voluntarily participated in this programme with internal motivation, (2) were satisfied with the level of programme difficulty, professionality of lecturer, and classroom environment, (3) gave positive responses about the achievement of the purposes of this programme, (4) showed strong intention for applying simulation to their school teaching. And future studies were proposed.

• Journal of Gifted/Talented Education
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• v.23 no.4
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• pp.523-535
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• 2013

The purpose of the present study is to investigate the factors which affect academic achievements among gifted students' intellectual and personality characteristics. For this purposes, 125 science gifted students' learning ability test and NEO personality test data were collected and analyzed along with the school achievement scores. According to the results of this study, there are significant relationships between academic achievements and conscientiousness, executive function, and learning motivation. Based on the achievement level, there are positive correlation between academic achievement and conscientiousness in a high academic achievement group. For the middle academic achievement group, there are positive relationship with executive function and learning motivation attention but negative relationship with extraversion. For the low achievement group, concentration was the only factor highly correlated with academic achievement. For the high academic achievement group, conscientiousness is a significant predictors of academic achievement; for middle academic achievement group, executive function and learning motivation were the significant predictors; for low academic achievement group, concentration was the significant predictors of academic achievement. Results were discussed in terms of practical value of enhancing gifted students' academic achievement.

• Journal of Gifted/Talented Education
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• v.24 no.4
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• pp.679-701
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• 2014

As the validity issue of teacher nominations for the identification of gifted students has been raised recently, this study purports to test the validity of teacher nominations for selecting scientifically gifted students. As the criterion variables, domain specific traits such as science creative problem solving skills and science attitudes and domain general characteristics such as divergent thinking skills, creative attitudes, intrinsic motivation, and leadership were analyzed. Scientifically gifted students, potentially gifted students who had never been enrolled in gifted programs but were nominated as the scientifically gifted by teachers, and general class students participated in the study. The results of ANOVA showed that there were significant differences in all variables but originality factors of the TTCT and science creative problem solving skill test between gifted/nominated students and general class students; gifted/nominated students were significantly superior in these variables to general class students. The discriminant functions analysis yielded a discriminant function that significantly discriminated between gifted/nominated and general class students. Variables loaded on the discriminant function were science creative problem solving skills except for the originality subfactor, and science efficacy. These results imply that while teachers are likely to consider adaptation-oriented academic excellency related to logical thinking skills, problem solving skills, and science performance when nominating students, they may ignore the innovation-oriented property which is indicated as the fluency and originality factors of TTCT. Also, the criteria of teacher nominations are presumed to be congruent with the selection criteria of the gifted education program which pursued academic excellency as the educational goal. This suggests that with such criteria, high performing students in the science area can be sufficiently identified by teachers with no further identification procedures or/and tests.

• Journal of Science Education
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• v.38 no.3
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• pp.585-598
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• 2014

The purpose of this study was to investigate how the activity in the elementary school science teachers' study group help teachers improve their professionalism and what the motivation was for the continuous participation by analyzing the operation system of study group and the teachers' perception. For this study, the N Elementary Science Teachers' Study Group in Gyeong-gi province was chosen, which has been maintained for a long time. Data such as observation journals, contents of activities, and some documents from this study group were collected through the participant observation methodology, and the perceptions about the participating motivation, the personal satisfaction and the impact on the professionalism were investigated by interviewing 5 teachers who participating in this study group. The results of this study were as follows: First, voluntary participation activated the teachers' study group, so teachers who belong to the study group, had a great satisfaction in the activities of the study group. Second, the more teachers participated in study group, they thought their professionalism has been improved. Based on the result of this study, implications to improve the professionalism of teachers were suggested.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11a
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• pp.277-280
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• 2002

정보과학의 발진은 급속도로 발전하고 있다. 가장 기초적인 정보 과학의 교육이 이루어지는 현행 중등 컴퓨터 교육은 어떠한 교과보다도 창의적인 자기 주도적 학습 및 개별학습이 필요하다. 컴퓨터 활용을 위한 교육보다는 컴퓨터 과학으로서의 컴퓨터 교육이 필요할 뿐 아니라 학생의 학습환경, 학습동기 및 흥미, 선행학습정도, 교과 수업의 참여도 등에 따라 학생 개개인의 능력 차이를 고려한 학습자의 개인의 학습능력에 맞는 수준별 교육이 필요하다. 고등학교 컴퓨터 교과 교육에서의 컴퓨터 과학으로서의 교육효과를 위해 학습자 학습 능력에 맞는 교육과정을 설계하였고 보충학습과 심화학습을 위한 자기 주도적 학습 방법인 웹에서의 학습 방법을 도입하여 학습의 효과를 높이고자 하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.74-75
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• 2023

선박의 자율지능기술은 국방분야에서 무인화 기술 개발로 시작하여, 최근에는 해운분야에서 자율운항선박의 도입에 관심을 갖게 되면서 자율운항선박 관련 기술 개발이 활발히 이루어지고 있다. 자율운항선박이 해상 물류의 수단으로 사용화되기 위해서는 자율운항선박의 항만 입출항을 위한 기술적, 제도적 기반이 마련되어야 한다. 특히 항만 운영의 효율성을 높이고 자율운항선박의 안전 운항을 보장하기 위해서는 자율운항선박의 입출항을 위한 여러 기술이 개발되어야 한다. 본 연구에서는 자율운항선박의 입출항을 위해서 요구되는 기능을 식별하고, 요구 기능이 개발되기 위해서 고려되어야 하는 사항을 검토하였다. 자율운항선박의 입출항 지원을 위해서는 항만과 선박의 정보 공유 및 동기화가 선행되어야 하고, 고품질 정보를 기반으로 스케줄링 및 운항 경로 계획이 수립되어야 한다.

• Journal of The Korean Association For Science Education
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• v.36 no.3
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• pp.435-443
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• 2016

The purpose of this study is to analyze the mismatch between instructional design and teaching practice of pre-service science teachers and to investigate the cause of these mismatches. Twenty pre-service science teachers took part in teaching practicum for four weeks from Apr. 2015 to May 2015 and we analyzed their lesson plans and videos of these lessons. After that, we interviewed the pre-service science teachers in order to know the cause of these mismatches and additional informations. The main findings are as follows. First, in the introductory stage, we found more mismatch in the "attention and motivation stimulation" area than any other area. Many pre-service science teachers corrected their 'motivation practice' in different forms. Second, we found out that the most mismatch occurred in the evolving stage. Many pre-service science teachers added learning contents in "learning content presentation" area. Third, in the closing stage, many pre-service science teachers omitted the "leaning content summary" area in the lack of time. Fourth, the number of mismatches by internal factors is similar of by external factors. The mismatches by external factors were mainly by feedback of guidance teacher and change by students' response. In addition, we discussed the implications related to reflective mentoring program, importance of guidance teacher, importance of time management etc.

• Journal of The Korean Association For Science Education
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• v.22 no.3
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• pp.517-524
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• 2002

The secondary science teachers' professional needs and their preference for training method between off-line and on-line education were investigated. A nation-wide survey was administered to 145 science teachers from 106 secondary schools. The respondents showed high demands on all items. The prominent need was to motivate students learning science. To the contrary. their need for learning more about history and philosophy of science was the lowest. Veteran teachers and high school teachers had higher demands on designing evaluation items, but nonveteran teachers on evaluating the effectiveness of their instruction and updating their scientific knowledge. Teachers preferred the online education as a training method for most items except laboratory activities.