• Journal of The Korean Association For Science Education
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• v.35 no.2
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• pp.325-331
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• 2015

In this study, we investigated the effects of individualized learning adapted to students' conceptions using smart devices in science instruction upon students' conceptual understanding, the retention of conception, achievement, learning motivation, enjoyment of science lessons, and perception about individualized learning using smart devices. Four seventh-grade classes at a coed middle school in Seoul were assigned to a control group and a treatment group. Students were taught about molecular motions for seven class periods. Two-way ANCOVA results revealed that the scores of a conception test, the retention of the conception test, a learning motivation test, and an enjoyment of science lessons test for the treatment group were significantly higher than those for the control group. Although the score of the treatment group was higher than that of the control group in the achievement test, the difference was not statistically significant. Students' perceptions about individualized learning using smart devices were also found to be positive.

• Journal of the Korean Chemical Society
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• v.50 no.4
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• pp.338-345
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• 2006

study investigated the effect of an instruction using generating analogy on scientific conceptual understanding, science learning motivation, attitude toward science instruction, and perception of instruction. Two classes of seventh graders at a middle school in Seoul were randomly assigned to the treatment group and the control group, and they were taught about the motion of molecules for 5 class hours. The instruction for treatment group was developed based on the Glynns Teaching-With-Analogy model. Two-way ANCOVA results revealed that the scores of the treatment group were significantly higher than those of the control group in the conception test. However, there was no significant difference between two groups in the science learning motivation test and the test on the attitude toward science instruction. Survey results on the students perception of instruction showed that generating analogy was hard for the greater part of students, and finding appropriate analog was the most difficult work. Educational implications are discussed.

• Journal of Science Education
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• v.42 no.2
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• pp.214-229
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• 2018

The purpose of this study was to investigate the effect of science-based STEAM program on the positive science experience of elementary school students. The participants of this study were 64 fourth graders of S elementary school located in Gyeonggi-do. They were divided into the experimental group of 30 students and the comparative group of 34 students. The program was reorganized into the STEAM program, which emphasized communication with students in the second semester of 4th grade, centered on 'Earth and Moon' unit which were carried out in total 16 times. The experimental group was giving the science-centered STEAM program, and the comparative group was giving the general instruction model based on the instructional book guidelines. The results of the study are as follows. The science-centered STEAM program showed a further influence on the positive science experience of elementary school students. Based on these results, it can be confirmed that the class using the science-centered STEAM program positively influenced the improvement of students' positive science experience.

• Journal of The Korean Association For Science Education
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• v.42 no.3
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• pp.325-340
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• 2022

This study attempts to analyze the causes of low affective achievement of elementary, middle, and high school students in Korea in science. To this end, a total of 27 students, three to four students per grade, were interviewed by grade from the fourth grade of elementary school to the first grade of high school, and a total of nine teachers were interviewed by school level. In the interview, related questions were asked in five sub-areas of the 'Indicators of Positive Experiences about Science': 'Science Academic Emotion', 'Science-Related Self-Concept', 'Science Learning Motivation', 'Science-Related Career Aspiration', and 'Science-Related Attitude'. Interview contents were recorded, transcribed, and categorized. As a result of examining the causes of low science academic emotion, it was found that students experienced negative emotions when experiments are not carried out properly, scientific theories and terms are difficult, and recording the inquiry results is burdensome. In addition, students responded that science-related self-concept changed negatively due to poor science grades, difficult scientific terms, and a large amount of learning. The reasons for the decline in science learning motivation were the lack of awareness of relationship between science class content and daily life, difficulty in science class content, poor science grades, and lack of relevance to one's interest or career path. The main reason for the decline in science-related career aspirations was that they feel their career path was not related to science, and due to poor science performance. Science-related attitudes changed negatively due to difficulties in science classes or negative feelings about science classes, and high school students recognized the ambivalence of science on society. Based on the results of the interview, support for experiments and basic science education, improvement of elementary school supplementary textbook 'experiment & observation', development of teaching and learning materials, and provision of science-related career information were proposed.

• Journal of KIISE:Computer Systems and Theory
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• v.36 no.4
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• pp.291-303
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• 2009

Round robin based proportional share scheduling(RRPS) defines weight which determines share for each task and allocates CPU resource to each task in proportional to its respective weight. RRPS uses fairness as the measure of performance and aims at high fairness of scheduling. However, researches for scheduling fairness problem due to synchronization among tasks have been rarely investigated. In this paper, we discuss that scheduling delay due to synchronization may result high unfairness in RRPS. We explain such a situation as weight inversion. We then propose weight inheritance protocol(WIP), a synchronization mechanism, that prevents weight inversion. We also show that WIP can reduce unfairness using fairness analysis and simulation.

• Science of Emotion and Sensibility
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• v.8 no.1
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• pp.55-61
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• 2005

The purpose of the study was to examine any difference in academic achievement, self-concept and achievement motivation by the types of hemispheric dominance. 189 high school students participated in the study. They were taken three kinds of different psychological tests i.e., the brain hemispheric preference (dominance), the self-concept and the achievement motivation tests. Three types of hemispheric dominance were classified as the left hemispheric, the right hemispheric and whole brain dominances. The results showed that students with the right hemispheric dominance showed lower academic achievement and self concept than the other groups students. Those who had left hemisphere dominance showed higher achievement motivation than the right hemispheric students. These results could be interpreted that education in the high school in Korea mainly focuses left hemisphere related topics or subjects.

• Journal of the Korean Chemical Society
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• v.46 no.4
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• pp.377-384
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• 2002

In this study, the effect of cooperative computer-assisted instruction upon students' conceptual under-standing,application ability, and learning motivation were investigated by a previous achievement level. The treatment and the control groups (2 classes) were selected from a middle school in Seoul, and taught about the motion of molecule for 5 class periods. Prior to the instructions, a learning motivation test was administered and used as covariate. The scores of a previous achievement test were also used as covariate. The scores of the mid-term science examination were used as blocking variable. After the instructions, the conceptions test, the application test, and the learning motivation test were administered. Two-way ANCOVA results revealed that there were no significant differences in the scores of the con-ceptions test and the application test. However, the scores of the treatment group were found to be significantly higher than those of the control group in the learning motivation test.

• Journal of Korean Society of Forest Science
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• v.85 no.4
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• pp.647-655
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• 1996

This paper examined the effects of users' expectations, norms and recreation motives on perceived conflict in a recreation setting. The study used data collected at Second Campground in Chirisan National Park, Korea, during the summer of 1994. Of the total 280 questionnaires distributed, 253 questionnaires(90.4%) were usable. About 82% of the respondents perceived conflict by others' late-night-singing. This study supported the notion that perceived conflict occurs when norms, expectations, and recreation motives are interfered with by others' incompatible behaviors. Solitude/nature motive factor was a better predictor of perceived conflict than norm-interference or expectation-interference. However, the relative predictability of each variable on perceived conflict could be various depending on different kinds of recreation motives, specific ways of measuring norms, expectations and conflict. Management implications were discussed.

• Journal of KIISE
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• v.42 no.1
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• pp.1-6
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• 2015

Smart electronics are now widely used in everyday life, but the size of the screen of such devices is still too small to fully enjoy multimedia content. Therefore, if the display is comprised of multiple views produced by multiple smart devices, then the screen output size can increase. However, a time delay between the devices can generate a discordance in the video and sound. This paper compares two synchronization techniques that can be used to minimize such a time delay, and proposes a synchronization technique in which, the timing of the screen for each device is calculated by synchronizing the playback time, using the timing information transferred from the control device, and periodically adjusting the playback timing forward or backward. When multimedia content is reproduced using multiple views from multiple smart devices, we can minimize the time delay, regardless of the network quality or the differences in the devices used for this technique.

• Journal of the Korean Society of Radiology
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• v.15 no.5
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• pp.657-666
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• 2021

This study was conducted to understand the motivation for major selection and degree of satisfaction with major for university students in the department of Radiology, and to analyze the effect university life adjustment in COVID-19. From Jung 20 to July 20, 2021, 308 students in grades 1~4 were enrolled at universities in Busan and Gyeongnam. Factors influencing university life adjustment were found to have a good adjustment when majoring was selected with personal motive rather than social motive. Among the sub-factors of major satisfaction, general satisfaction and satisfaction with surrounding relationships had a positive effect on university life adjustment. Therefore, in order to adapt to healthy university life, it is necessary to secure closeness between school, professor, and students, and it is desirable to provide students with opportunities to experience various education by recognizing the rapidly changing policy changes in education to increase major satisfaction. Based on the results of this study, it is expected that the results of this study will be used as basic data for successful university life of students in the department of radiology.