• 한국초등과학교육학회지:초등과학교육
• /
• 제23권4호
• /
• pp.326-331
• /
• 2004

In this study, the relationships among self-directed learning ability, science teaching efficacy beliefs (personal science teaching efficacy and science teaching outcome expectation), life satisfaction, job satisfaction, and other background variables of elementary school teachers were investigated. A survey was administered to 234 teachers from 25 elementary schools in Jeonju. It was found that self-directed learning ability of the teachers was significantly correlated with their personal science teaching efficacy, science teaching outcome expectation, life satisfaction, job satisfaction, and age. A stepwise multiple regression analysis revealed that personal science teaching efficacy, life satisfaction, science teaching outcome expectation, and age were the significant predictors on their self-directed learning ability.

• 한국지구과학회지
• /
• 제43권5호
• /
• pp.647-658
• /
• 2022

The purpose of this study is to analyze students' learning characteristics regarding spatial ability, orienteering ability and earth science content learning ability and their relationship through development and application of earth science activities using orienteering. The programme aims to improve students' spatial ability using orienteering activity which requires spatial ability. Topics in the programme included map, compass, contour, movement of celestial, and constellation application. Students were to orienteer in the field using the method they learned in class. This programme was applied to five 7th graders. The results are, first, students who have positive attitude toward science and do well at school tended to perceive their orienteering ability high. Second, all parts of spatial ability, spatial visualization, spatial orientation, spatial relation were used during orienteering, especially spatial visualization and spatial orientation. The relationship between spatial ability, orienteering ability, and earth science content learning abilities was not clear. However, orienteering ability and earth science content learning ability were in similar tendency.

• 한국초등과학교육학회지:초등과학교육
• /
• 제28권4호
• /
• pp.382-389
• /
• 2009

The purpose of this study was to examine the instructional effect of problem-based learning on creative problem-solving skills and academic achievement in elementary science classes. Based on the literature review, six stages for problem-based learning were applied: Orientation, Presenting problems and the process of learning, preliminary problem solving, problem solving, sharing results, and wrapping up/evaluating. The subjects were 74 students in two six-grade classes in Gyeonggi province. As a result, the following findings were given: First, the students who were engaged in problem-based learning showed better progress in creative problem-solving skills. Second, science academic achievement of experimental group were better than traditional group. Educational implications were discussed.

• 한국초등과학교육학회지:초등과학교육
• /
• 제21권2호
• /
• pp.241-252
• /
• 2002

Field learning have not well performed in elementary school for various reasons, in spite of the benefits of field study. Absence of suitable geological field courses for elementary science education is one of several reasons The purpose of this study is to develop learning materials for the field geology in Hampyeong region and apply them to the geological related units for elementary science education. The 5 observation sites for the field geology learning in study area include various rocks and geological structure such as granite, gneiss, conglomerate, sandstone, mudstone, plant fossil, fold, fault and weathering phenomenon changing rocks to soil. This study area is suitable place for the field geology learning of elementary science education in Kwangju and Chonnam province because of convenience access, fresh outcrops and distribution of various geological learning materials as rocks and structure.

• 한국초등과학교육학회지:초등과학교육
• /
• 제20권2호
• /
• pp.165-175
• /
• 2001

The study aimed to examine the effects of cooperative learning in science teaching on scientific knowledge, inquiry ability, and science - related attitudes. This study has carried out LT strategy. The cooperative learning was applied to the experimental group for 8 weeks with worksheets developed for this study, The results were statistically analyzed by SPSS. The results are as follows: Students of cooperative learning made significant progress in scientific knowledge(p<.05), inquiry ability(p<.01), and science - related attitudes(p<.05). The students in the cooperative classes have shown that the cooperative learning was good for causing interest. inducing active participation, and helping students' learning. and students showed strong wish for the continuous cooperative loaming.

• 한국경영과학회지
• /
• 제29권4호
• /
• pp.117-134
• /
• 2004

This study suggests a data driven optimization approach, which simulates the models of human learning processes from cognitive sciences. It shows how the human learning processes can be simulated and applied to solving combinatorial optimization problems. The main advantage of using this method is in applying it into problems, which are very difficult to simulate. 'Undecidable' problems are considered as best possible application areas for this suggested approach. The concept of an 'undecidable' problem is redefined. The learning models in human learning and decision-making related to combinatorial optimization in cognitive and neural sciences are designed, simulated, and implemented to solve an optimization problem. We call this approach 'SLO : simulated learning for optimization.' Two different versions of SLO have been designed: SLO with position & link matrix, and SLO with decomposition algorithm. The methods are tested for traveling salespersons problems to show how these approaches derive new solution empirically. The tests show that simulated learning for optimization produces new solutions with better performance empirically. Its performance, compared to other hill-climbing type methods, is relatively good.

• International Journal of Computer Science & Network Security
• /
• 제21권6호
• /
• pp.137-142
• /
• 2021

Machine-learning systems have proven their worth in various industries, including healthcare and banking, by assisting in the extraction of valuable inferences. Information in these crucial sectors is traditionally stored in databases distributed across multiple environments, making accessing and extracting data from them a tough job. To this issue, we must add that these data sources contain sensitive information, implying that the data cannot be shared outside of the head. Using cryptographic techniques, Privacy-Preserving Machine Learning (PPML) helps solve this challenge, enabling information discovery while maintaining data privacy. In this paper, we talk about how to keep your data mining private. Because Data mining has a wide variety of uses, including business intelligence, medical diagnostic systems, image processing, web search, and scientific discoveries, and we discuss privacy-preserving in deep learning because deep learning (DL) exhibits exceptional exactitude in picture detection, Speech recognition, and natural language processing recognition as when compared to other fields of machine learning so that it detects the existence of any error that may occur to the data or access to systems and add data by unauthorized persons.

• 한국초등과학교육학회지:초등과학교육
• /
• 제27권4호
• /
• pp.446-454
• /
• 2008

The purpose of this study was to examined the effects of different grouping according to the levels of students' achievement in science cooperative learning on students' science academic achievements, science-related attitudes, perceptions of science learning environment and self-efficacies. The results of this study can be summarized as following. First, the homogeneous grouping was more effective than the heterogeneous grouping in improving the science academic achievements of high academic ability students. Second, the homogeneous grouping was more effective than the heterogeneous grouping in improving the science-related attitude of students, especially for low academic ability students. Third, both the homogeneous grouping and the heterogeneous grouping improved the perceptions of science learning environment of students. For low academic ability students, the homogeneous grouping was more effective. Fourth, the homogeneous grouping was more effective than the heterogeneous grouping in improving self-efficacies of students, especially for middle and low academic ability students.

• 한국과학교육학회지
• /
• 제36권1호
• /
• pp.159-166
• /
• 2016

과학수업에서의 거꾸로 수업에 대한 이해와 경험을 바탕으로 거꾸로 수업을 적용하는데 겪는 어려움을 면담조사방법을 활용하여 분석하였다. 면담자는 서울, 경기에 근무하고 있는 교사 중 거꾸로 수업 경력을 기준으로 과학 교과에 2년 이상 거꾸로 수업을 운영한 경험을 가진 교사와 올해 처음 거꾸로 수업을 운영하기 시작한 교사를 초 중 고 학교급별로 각 1명 씩 총 6명을 선정하였다. 참여한 교사들에게 3단계 면담 조사를 실시한 결과, 초중고 과학 수업에서 거꾸로 수업 수행에 매우 높은 만족감을 나타내었다. 특히 탐구활동에 거꾸로 수업이 많은 도움이 된다고 하였다. 그러나 교사들은 수업 준비에 부담감을 가지고 있었으며 수업 구성에 대한 어려움을 겪고 있었다. 거꾸로 수업의 어려움 해결 방안에 대한 탐색으로서 교과서 체제에 대한 논의를 통해 현재의 수업을 개선하는데 다양한 시사점을 도출할 수 있었다.

• 한국초등과학교육학회지:초등과학교육
• /
• 제36권3호
• /
• pp.273-285
• /
• 2017

The purpose of this study is to develop a program that enables students to participate in various experiential learning places in order to provide various experiences to students for solve the problem of prejudice to specific places such as science museum, zoo and botanical garden. For this purpose, the surveys were conducted about experiential places and awareness of experiential learning. 88 elementary school teachers participated in the survey. As a result, they were positive about the use of experiential learning in elementary science instruction, but there were responses that a lot of preparations for the progress and efforts were needed. Therefore, if instructional materials and teaching materials for experiential learning are given, it is confirmed that the intention of using is increased. And the results were analyzed and the experiential sites were categorized into 12 types. We could present basic data that can diversify not only the science museum but also science related experiential places. We developed a learning program related to 'The Liquid and Gas' unit of the third grade, And 'Life unit of Plant' unit of the third $4^{th}$ grade. Through this study, we intend to help science experiential learning to be activated and student - centered experiential learning to be realized.