• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.9
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• pp.1019-1025
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• 2014

Recently, the studies of the Unmanned Aerial Vehicle(UAV) has been studied a variety from military aircraft to civilian aircraft and for general hobby activity aircraft. In particular, for small unmanned aircraft research for the ease of turning and hovering and Vertical-Off Take Landing(VTOL), have been studied mainly quadrotor unmanned aircraft is a type suitable for this study of small unmanned aircraft. The studies of these unmanned aircraft is the kinetic analysis requires complex processes, because these support by the aerodynamic forces on the unmanned aircraft study, and the controller design based on these dynamical analysis and experimental model analysis. In this paper, after the implementation of the basic attitude control based on a general PID controller, we propose concept design of the attitude control method on quadrotor attitude control by using the reinforcement learning algorithm of neural networks for non-linear elements not considered in the controller design.

• Journal of Korean Home Economics Education Association
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• v.12 no.2
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• pp.65-79
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• 2000

The purpose of this study was to suggest the most effective method of group formation necessary fro the cooperative learning of the home economics in the middle school. For this purpose, 12 classes students in the 3rd grade of a middle school in Inchon City have been divided as 3 groups: 4 classes were consisted of the groups by the records, 4 classes by close friend. and 4 classes by lot. The STAD method of the cooperative learning methods has been evenly introduced to all 12 classes for 10 hours in 10 weeks. After those sessions. some questionnaires asking . and were collected from all students, Data, which were analyzed by the method of group formation for male and female students groups, showed following results: 1. The most effective group forming method was the group consisted by lot. This group was more effective than the group by close or the group by records. 2. While male students were influenced by the group forming method in the cooperative learning. female students were not. 3. More activity of the groups resulted more effects of the cooperative learning and made more positive attitude to the study of the home economics, and thus. teachers should care for the activity of each to make the students cooperative and to activate in the class.

• Journal of Fisheries and Marine Sciences Education
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• v.12 no.2
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• pp.224-243
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• 2000

The purpose of this study is to analyze the effects of constructivist instruction applying cooperative learning skill on science academic achievement, science inquiry ability, self-regulated learning, and science related attitude. The subjects of the study were 157 2nd grade junior high school students in Pusan. Subjects were randomly assigned to two groups, experiment and control group. Two groups received 14 sessions training for about 1 month which was done by researcher. The experiment group received constructivist science instruction and the control group received teacher-centered instruction. Constructivist science instruction applying cooperative learning skill consists of five phases: problem recognition, hypothesis establishment, experiment observation, clarification, and application phases. The results of this study are as follows: Constructivist science instruction applying cooperative learning skill had a significant effect on science academic achievement, self-regulated learning and science attitude improvement of middle school students but had no significant improvement of science inquiry ability. And constructivist science instruction had an effect on science academic achievement improvement of the students having high level science inquiry ability. Research suggestions and implications for teaching are discussed.

• Journal of Korean Academy of Nursing
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• v.42 no.6
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• pp.771-782
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• 2012

Purpose: This study was conducted to develop and implement a case-based small group learning program on the care of children with infectious disease, and to examine its effects on knowledge, attitude and preventive practice behaviors of daycare center teachers compared to a control group. Methods: Based on the need assessment, the case-based learning program for the management of infectious children was developed. For this quasi-experimental study, 69 teachers were recruited from 14 child daycare centers in a city located in J province. Thirty four teachers were assigned to experimental group and participated in the case-based small group learning once a week for 5 weeks. Data were analyzed using the SPSS 18.0 program to perform ${\chi}^2$-test and t-tests. Analysis of covariance was used to treat the covariate of the number of assigned children between experimental and control groups. Results: The experimental group showed significantly higher posttest scores in knowledge, attitude and preventive practice behaviors than those of control group (p<.001). Conclusion: These findings indicate that case-based small group learning is an effective educational strategy for daycare center teachers to learn infection management through the emphasis of self-reflection and discussion.

• Journal of Korean Elementary Science Education
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• v.27 no.4
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• pp.446-454
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• 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.

• Journal of the Korean School Mathematics Society
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• v.19 no.4
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• pp.329-356
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• 2016

The purpose of the study was to develop project based math learning using future prospective jobs to find out its effects on elementary school student's attitude toward mathematics and career awareness. Also, this study aims at implementation of this project based math learning program in school math education. The project based math learning using future prospective jobs was conducted through 19 lessons for 7 weeks. As a result, the project based math learning using prospective jobs is turned out to be effective on developing attitudes on mathematics and career awareness positively.

• English Language & Literature Teaching
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• v.13 no.2
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• pp.25-45
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• 2007

In this article, I discuss an International Collaborative Writing Course on the Internet (ICWCI) that focused on the learning effectiveness Korean EFL students (KEFLSs) perceived to be necessary to exchange with international EFL students (IEFLSs). The course development was based on an internet-based instructional module, applying widely accepted EFL theories for modern foreign language instruction: collaborative learning, process writing, project-based learning, and integrated approaches. Data from online discussion forum, mid-of-semester and end-of-semester surveys, and final oral interviews are conducted and discussed. KEFLSs and IEFLSs were questioned about (a) changes in attitude towards computers assisted language learning (CALL); (b) effect of computer background on motivation; (c) perception of their acquired writing skills; and (d) attitude towards collaborative learning. The result of this study demonstrated that the majority of ICWCI participants said they enjoyed the course, gained fruitful confidence in English communication and computer skills, and felt that they made significant progress in writing skills. In spite of positive benefits created by the ICWCI, it was found that there were some issues that are crucial to run appropriate networked collaborative courses. This study demonstrates that participants' computer skills, basic language proficiency, and local time differences are important factors to be considered when incorporating the ICWCI as these may affect the quality of online instructional courses and students' motivation toward network based collaboration interaction.

• Journal of The Korean Association For Science Education
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• v.21 no.2
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• pp.299-315
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• 2001

In this modern society, the students should be able to recognize problems for themselves, and search the information which is valuable for them, and apply and utilize it. For these, we analyzed the effect of the discussion learning using the concept cartoons on the students' learning attitude and achievement. Even though there was no meaningful difference in the achievement between the experimental group and the control group, it was found that the discussion learning using the concept cartoons could be one of the ways that improve the students' problem solving ability. The fact that there was the significant affirmative effect on the students' positiveness when they were solving the problems was also found.

• Journal of Korean Elementary Science Education
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• v.30 no.2
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• pp.141-151
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• 2011

The purpose of this study is to examine the effect of forth grades in elementary the environmental-friendly attitude by STSE in elementary lesson. To verify research problem, the subject of this study were forth-grade students selected from two classes of an elementary school located in Ulsan. Post-test showed following results: the research group showed a significant improvement in the environment-friendly attitude of cognitive domain and behavior domain compared with the comparison group. In conclusion, STSE program was more effective than the teacher map based teaching model on environment-friendly attitude. However, since the study has a limit on an objet of the study and the applied curriculum, the additional studies need to be conducted with an extended comparative group and curriculum.

• Educational Technology International
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• v.10 no.2
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• pp.107-125
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• 2009

This study seeks to prove three points through the research. The first point is to examine the changes of international attitudes with actual experiences using synchronous international distance learning. The second point is to examine the effectiveness of a synchronous international distance system. And the final point is to compare international attitudes among middle school and undergraduate school students in Korea and Japan. The study used the DVTS for audio and video communication tools and automatic translating chat as a text communication tool. This combination of communication tools was very effective for students from both countries to communicate for international collaborative learning activities. The study found several interesting patterns of attitude change from the results of the study. For whole category analysis, there are positive changes in four categories of international attitudes: consciousness to foreign countries, consideration for other's viewpoints, motivation for international education, and recognition for the counterpart country. However, there was no change in the nationality category.