• Journal of the Korea Society of Computer and Information
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• v.19 no.6
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• pp.139-149
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• 2014

Much research has been conducted in educational robot, a new instructional technology, for K- 12 education. Several studies have shown that educational robot provides effective learning opportunities for students in both content areas of STEM(science, technology, engineering, and mathematics) and critical academic skills, such as collaboration, problem solving and communication skills. However, most studies to date on applications of educational robots have been conducted outside the formal education setting. This study analyzed the influence of using robots in an elementary school science class in Korea with regard to science learning motivation. A total of 121 students in fourth and fifth grades participated in the study. The experimental group was taught using robots in the science class, while the control group was taught using traditional methods. Analysis of covariance (ANCOVA) was conducted to compare the between-group differences in learning motivation before and after the experiment; an interview was also conducted for the experimental group. The study results showed a significant improvement (p<.05) in both learning motivation in the experimental compared with the control group. There was also positive response to learning with a robot. This study will play an important role in research on the use of educational robot in formal education in the future.

• The Science & Technology
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• no.3 s.418
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• pp.74-76
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• 2004

• Journal of the Korean Society for Library and Information Science
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• v.36 no.4
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• pp.21-47
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• 2002

The present study, on the bass of a premise that reference lists are one of the social products, reflecting various social environments of their own society, was made as part of an attempt to explore the co-occurrence phenomenon of both Korean and Non-Korean Literatures occurred within the Korean references. 321 authors (articles) of 43 Korean journals on Social Sciences were surveyed on research channels and citation motivations and their 11358 references were analyzed. The findings are as follows : 1) The extent of the co-occurrence was that Non-Korean literatures were more 1.9 times (65.3%) cited than Korean ones and English (61.5%)-American (50.4%) predominancy was heavily found. 2) Research channel, worked as an indicator of the identity of researcher as well as the source of research ideas was most Non-Korean channel orientedness (55.8%). 3) Citation motivations were significantly depended on whether Korean or Non-Korean literatures and non-Korean literatures were cheifly cited to be conceptual motivations than other motivations. 4) Research channel among variables was worked as a main effect predicting major citation motivations on Non-Korean literatures. Finally, this study is very suggestive : 1) It might be a new approach and interpretation by adopting citation motivations to explore a process of knowledge producting of researchers 2) Partly, it proved empirically the relationship of knowledge producted by Korean researchers to Non-Korean knowledge through the analysis of citation motivations.

• Journal of The Korean Association For Science Education
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• v.36 no.1
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• pp.75-86
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• 2016

The purpose of the present study is to develop and validate an instrument to assess STEM career motivation. We developed 32 items for 7 constructs (i.e. education experience, career value, academic self-efficacy, career self-efficacy, career interest, parents' support, and career motivation) on STEM career motivation based on Social Cognitive Career Theory (SCCT; Lent et al.,1994). 767 first year high school students participated in this study. The items were validated by Messick's framework (1995). In this study, we examined the validity of items in four aspects (i.e. content, substantive, structural and generalizability of validity). Methodologically, we used Rasch analysis, Exploratory factor analysis, confirmative factor analysis based on structural equation modelling. We confirmed that our instrument with 32 items as valid and reliable for measuring the STEM career motivation. In addition, we tested the STEM career motivation model based on SCCT. Our model explained the data well, suggesting that external factors (education experience and parents' support) and cognitive factors (perception of value, self-efficacy and interest) were significantly related to STEM career motivation.

• Journal of the Korean Society of Earth Science Education
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• v.12 no.1
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• pp.54-63
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• 2019

The purpose of this study was to investigate the effect of small group discussion and debate emphasizing maker class on elementary school students's science learning motivation and scientific attitude. The conclusion of the study is as follows. First, it was shown that the small group discussion and debate emphasizing maker class had a statistically significant effect on elementary school students's science learning motivation. This is due to the fact that the small group discussion and debate emphasizing maker class stimulates students' interaction, which is why students are more interested in class while solving problems with their peers. Second, it was found that the small group discussion and debate emphasizing maker class had a statistically significant effect on the elementary school students' scientific attitude. This allows students to have enough opportunity to express their opinions through small group discussions and debate, and I think that because they listen to others' opinions when they make new things or make new plans, so they have been able to increase their scientific attitude continuously. Third, based on the analysis of the participant students' opinions on the small group discussion and debate emphasizing maker class, all the participants answered that they were interested in this kind of class and they want to participate in this kind of maker class again. Therefore, it is thought that the small group discussion and debate emphasizing maker class can play a big role in raising the elementary school students's science learning motivation and scientific attitude.

• The Journal of Natural Sciences
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• v.8 no.1
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• pp.123-129
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• 1995

This paper describes the design and implementation of multimedia presentation system based on the compensative synchronization algorithm. We proposed the compensative synchronization algorithm in compensation for previously preestimated delay-time in order to minimize delay-time in multimedia presentation system. The presentation system uses compensative synchronization algorithm and have multimedia objects as text, raster graphics, geometric graphics, or audio.

• Journal of KIISE:Computing Practices and Letters
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• v.5 no.2
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• pp.283-294
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• 1999

병행적 프로그램 개발을 위한 Java 언어의 기능은 저수준의 기능으로 프로그래밍이 불편하고 오류를 범할 가능성이 높다. 본 논문에서는 병렬 알고리즘에서 빈번히 활용되는 세마포어, 여러 유형의 버퍼와 버퍼그룹, 베리어 작업 영역등의 동기화 제어구조를 클래스 라이브러리의 형태로 개발하였다. 이 라이브러리를 활용하면 동기화 기능의 구현에 관한 복잡한 내용이 제어구조 클래스에 효과적으로 은폐되고, 병렬 알고리즘의 구조와 이를 구현하기 위한 제어가 분리될 수 있다. 단일 목적의 동기화 기능을 위하여 복수 구현이 제공되므로 알고리즘의 구조를 수정하지 않으면서도 보다 적절한 구현을 선택하도록 프로그램을 변경할수도 있다.

• Journal of The Korean Association For Science Education
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• v.19 no.2
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• pp.305-314
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• 1999

The effects of three teaching models were compared in this research. One of those is concept change model, another is concept change model based on students learning motivations, the other is traditional teaching method based on science textbooks. The subjects of this research were the 8th grade students of Korean middle school. They were divided into three groups, and tested learning motivations. All of the three groups improved their learning motivations and concept understanding by the classes. Especially, the group of concept change model based on students learning motivations represented most effective improvement of learning motivations. The concept change teaching model and concept change teaching model based on students learning motivations are more effective in concept understanding than traditional teaching method based on textbooks. The students who have high learning motivations improved their concept understanding by the classes of concept change model based on students learning motivations. The students who have low learning motivations improved their learning motivations by the classes of concept change model based on students learning motivations also.

• Spatial Information Research
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• v.22 no.6
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• pp.1-11
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• 2014

It is possible to design a strategy for expanding the applications of GIS by identifying why social science researchers use GIS. This study analyses motivating factors for the researchers to utilize GIS and their satisfying factors towards the result. It is based on survey results which was answered by social science researchers at national research institutes and local governmental research institutes in South Korea in the perspective of merits of applying GIS, level of GIS usability and experienced effectiveness of applying GIS. Analysis result reveals that motivating factors to researchers applying GIS are correlated with efficiency in their research and satisfying factors are correlated to the usability. Then, we induced a fact that motivative factors for applying GIS is not related to the satisfaction of that. It may be a reason which researchers use GIS less applying in social science fields. As a result, it is necessary to connect the motivating and satisfying factors to further expand GIS applications.

• Journal of KIISE:Software and Applications
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• v.37 no.8
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• pp.647-652
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• 2010

Esterel is an imperative synchronous language well-adapted to control-intensive systems. When an Esterel program is translated to a circuit, the synchronizer of a parallel statement may be executed more than once in a clock; the synchronizer is called schizophrenic. Existing compilers cure the problems of schizophrenic parallel synchronizers using logic duplications. This paper proposes the conditions under which a synchronizer causes no problem in circuits when it is executed more than once in a clock. In addition we design a detection algorithm based on those conditions. Our algorithm detects schizophrenic parallel synchronizers that have to be duplicated in Esterel source codes so that compilers can save the size of synthesized circuits