• International Journal of Fuzzy Logic and Intelligent Systems
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• 제16권4호
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• pp.270-275
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• 2016

We present an approach for acceleration actor-critic algorithm for reinforcement learning with continuous action space. Actor-critic algorithm has already proved its robustness to the infinitely large action spaces in various high dimensional environments. Despite that success, the main problem of the actor-critic algorithm remains the same-speed of convergence to the optimal policy. In high dimensional state and action space, a searching for the correct action in each state takes enormously long time. Therefore, in this paper we suggest a search accelerating function that allows to leverage speed of algorithm convergence and reach optimal policy faster. In our method, we assume that actions may have their own distribution of preference, that independent on the state. Since in the beginning of learning agent act randomly in the environment, it would be more efficient if actions were taken according to the some heuristic function. We demonstrate that heuristically-accelerated actor-critic algorithm learns optimal policy faster, using Educational Process Mining dataset with records of students' course learning process and their grades.

• 영어어문교육
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• 제4호
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• pp.53-84
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• 1998

The purposes of the present study were to give the new direction of teaching English based on the 7th English curriculum, and to show some useful insights on English teaching in the 21st century. The 7th English curriculum was developed in two parts: as a required subject and as an elective subject. As a required subject, the English curriculum applies to the third grade of elementary school through to the first grade of high school. The elective subject of the English curriculum applies to the second and third grades of high school. In the 7th curriculum reform, a proficiency-based language program will be applied in the form of intensive and supplementary courses at the same levels irrespective of differences based on students' abilities, schools and regions. Linguistic functions, communicative functions, subject matters are included in the content area in language organization. Limiting the length of sentences is applied at elementary school only and is not applied at higher levels.

• 정보교육학회논문지
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• 제2권1호
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• pp.19-34
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• 1998

For the purpose of adapting positively to the information society, it is very important to develop the capabilities of the retrieve, gather, process and application for informations by making efficient use of computers. So, with a view to understanding the importance of computer and adjusting actively to the information society, the systematic policy to cultivate the ability of making the most of computers is strongly demended. Therefore this study is to make a curriculum and guide for improving the capability of applying computers systematically, through analyzing a curriculum of computer in Elementary, Middle and High Schools, and to develop a model of grading system to cultivate the ability of applying computers, which grades capabilities of its practical use.

• 대한수학교육학회지:학교수학
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• 제4권4호
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• pp.581-599
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• 2002

This study investigated the factorization concept development level of 3rd grades in middle school, the success of factorization problem solving, and the completion of factorization analogy tasks and science concepts analogy tasks. This study's results are followings. 1. Based on Sfard' reification levels, we classified students' factorization concept development levels from level 0 to level 3. As the students' development level was high, they tended to succeed the factorization problems gradually. 2. Experiencing factorization tasks which made students arrange factorization expressions hating same characterization, students ' factorization problem solving was improved. And, as the students' development level was high, they tended to attend to internal structural relations in factorization analogy tasks. 3. Analogy in factorization wasn't interrelated with analogy in science concepts. It said that analogy depended on the knowledges with it.

• East Asian mathematical journal
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• 제39권2호
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• pp.229-250
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• 2023

The purpose of this study is to investigate the impact of project learning using chatbots on artificial intelligence literacy. The subjects of the study were a total of 41 students from 1st to 3rd grade of general high school in Gyeonggi-do. Classes were held after school for a total of 6 hours, and the contents of the classes consisted of the concept and characteristics of artificial intelligence, the concept and expression of knowledge, OBT application for Kakao i open builder, guidance on how to create chatbots, and chatbot production practice. As a result of the pre- and post-test of the experimental group, the quantitative value of artificial intelligence literacy increased in all three grades. In the case of second-year students who set up a comparison group, when compared with the results of the comparison group, there was a significant positive effect on the AI literacy result, and female students were found to be more effective than male students.

• Educational Technology International
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• 제24권2호
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• pp.263-293
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• 2023

Offices of Education in Korea is planning and implementing the BYOD (bring your own device) policy. In particular, the Seoul Metropolitan Education Office promoted the 'Dibud' (digital buddy) policy. Due to the relative newness of the policy, coupled with opposition from the council, it hasn't been fully implemented. This study focuses on a rare example of a high school that experienced BYOD under the Office of Education-led policy in all three grades. This study adapted key variables from the Technology Acceptance Model (TAM). The regression results showed that both perceived usefulness (PU) and perceived ease of use (PEOU) significantly influenced intention to use Chromebooks and students' perceived learning outcomes. Analysis of the open-ended questionnaires revealed that students perceived positive benefits from using Chromebooks, such as easier data retrieval, improved academic performance, and increased learning productivity. Although the majority of respondents said there were no negative aspects to Chromebooks, negative factors included non-academic use, wireless network inconvenience, and device performance issues. The results of this study can provide data and understanding for future BYOD policies, specifically Chromebooks.

• 한국간호교육학회지
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• 제22권3호
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• pp.366-375
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• 2016

Purpose: This study was conducted to identify factors which influence suicidal ideation in students in girls' high schools. Methods: The participants were 202 students attending a girls' high school and a specialized girls' high school in D city. Data were collected from October 8 to December 23, 2013. Research tools were suicidal ideation, existential spiritual well-being, interpersonal relations, and depression. Data were analyzed using t-test, one-way ANOVA with Scheffe-test, Pearson's correlation coefficient, and multiple regression by stepwise selection with SPSS/WIN 12.0. Results: Suicidal ideation was negatively correlated with existential spiritual well-being, interpersonal relations, and positively correlated with depression. Effective variables were depression (${\beta}=0.54$, p<.001), existential spiritual well-being (${\beta}=-0.22$, p=.001), and grades (${\beta}=-0.10$, p=.042). These variables explained 52% of the variance in suicidal ideation. Conclusion: Based on the outcomes of this study, it is necessary to design an intervention program that teachers and community mental health nurses can use to increase existential spiritual well-being and decrease the depression and suicidal ideation for students in girls' high schools.

• Child Health Nursing Research
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• 제16권2호
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• pp.102-111
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• 2010

Purpose: This study was conducted to identify high school students' knowledge and attitude about cancer, and to examine the relation between these variables. Methods: The participants were 811 students from 8 high schools in U city. The data were analyzed using Pearson correlation coefficients, ANOVA and Duncan test with SPSS/WIN 12.0. Results: The score for participants' knowledge about cancer was 18.88 out of a possible 30, and their score for attitude towards cancer was 34.74 points of a possible 50. There were significant differences in knowledge about cancer according to gender, religion, school grades and worries about cancer. The attitude towards cancer showed significant differences according to worries about cancer and family atmosphere. The health behaviors were also statistically affected by factors like whether one smoked or not, health condition and harmony of family life. There was a significant positive correlation between attitude towards cancer and health behavior for cancer prevention. Attitude towards cancer and health behavior for cancer prevention showed a positive correlation with knowledge about cancer. Conclusion: The results of this study indicate that the development of an appropriate attitude towards cancer by high school students should lead to the practice of health behavior to prevent cancer. This development could be enhanced with structured and on-going education about cancer.

• 한국과학교육학회지
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• 제14권3호
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• pp.304-311
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• 1994

Four science concepts were selected from high school science textbook to investigate the differences in priorities of students knowledge activated during solving earth science problems in laboratory and earth science environmental contexts. Two items, one for laboratory context and the other for earth environmental context, were developed for earth selected concept The subjects were constituted of 192 students in 11th grade and 196 in 12th grade in one senior high school. Students' responses were categorized using graph models and analyzed in terms of 'Common Activated Knowledge'(CAK). and 'Specific Activated Knowledge'(SAK) across students' cognitive frames, grades, and sex. As contextual differences of the problems increased, context effects in priorities of CAK were reported in favor of laboratory context, on the contrary those of SAK in favor of earth environmental context. Context effects were reported across cognitive frames, especially students with laboratory cognitive frames showed more significant context effects than others. Lower graders and girls showed relatively large context effects. The results of this study showed that science concepts learned in a laboratory context are not easily transferred to earth environmental context. Therefore, special instructional strategies should be developed to overcome the context effect s according to activated knowledges with high priorities in laboratory and earth environmental context.

• Human Ecology Research
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• 제54권4호
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• pp.441-450
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• 2016

This study examined how parental role stress, family cohesion, and family adaptation of mothers who have adolescent children influenced parental efficacy. The subjects were 739 mothers of 370 junior high school and 369 senior high school children. Collected data were analyzed using t-test, correlation analysis, and hierarchical regression analysis after analyzing the data. The results of the study were as follows. First, mothers with high incomes, high educational level, and children with high school grades saw an increase in parental efficacy. Second, there were significant positive correlations in parental role stress, family cohesion, family adaptation and the parental efficacy of mothers. Third, the results of this study showed that parental role stress, family cohesion, and family adaptation were factors to understand the parental efficacy of mothers. Family cohesion was also an important factor to understand the parental efficacy of mothers. The findings confirm that the anxiety of parental role stress for mothers who have adolescent children is not a negative factor in regards to lower parental efficacy. The findings suggest that parental education programs for mothers of adolescent children and a required social welfare system for parental roles was not recognized as a stress factor.