• Journal of The Korean Association of Information Education
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• v.21 no.2
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• pp.209-217
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• 2017

Recently SW education has been emphasized in Korea, but many students do not have many opportunities to learn computer science. In this paper, I organized a computer science show to enhance interest and understanding of computer science. The computer science show consisted of understanding binary systems, send a text message, parity bit magic, finding a number card, and collecting colors (orange games). I applied the computer science show to elementary school students and looked at the results. Most of the students who participated in computer science shows did not have an "participation experience of computer science shows". As result of surveys, many students answered "I am interesting about computer science shows," "I am interested in computer science," and "I would recommend it to my friends nearby." Through research, I learned that computer science shows are a way for elementary students to draw interest in computer science and to create curiosity and interest in computer science. I found from research that computer science shows are a way to reduce students' learning burdens and to increase interest in computer science.

• Journal of Korean Elementary Science Education
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• v.34 no.3
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• pp.338-345
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• 2015

The purpose of this study is to analyze science fields and content elements of the science reports in a web portal site of Republic of Korea in view of scientific literacy. The main results of the analysis on the 679 reports sampled in a year are as follows. First, 506 reports in 46 fields were identified. Reports about technology and earth science occupies 16% respectively, and life science occupies 13%, medical science 4%, chemistry, company, others 3% and physics 1%. Almost reports show technology as associate field. Second, the frequency rate of reports including scientific literacy content elements is 52%. Reports related to 'physics' and 'chemistry' as dominant fields show relatively high rate in scientific literacy elements. The element, 'social context' is included in about 96% of the reports. Both 'data and statistics' and 'application' show relatively low rate and large gaps according to dominant fields. A few concluding remarks and proposals follow from these results. First, as almost science reports show the nature of integrated science, scientific literacy acquisition through science reports in internet requires the integrated scientific view. Especially most science reports includes the contents related to technology or medical science, so the point of view in the science-technological literacy is required. Second, the scientific literacy content elements in reports show various rates according to dominant fields. Therefore, science reports need to complement the deficient content elements to carry out the role of science reports as scientific literacy sources.

• Journal of The Korean Association For Science Education
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• v.20 no.2
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• pp.193-199
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• 2000

The textbook is a predominant feature of most classrooms. Because the textbook is an important aspect of educational experience, it is essential that the content of the texts be carefully scrutinized. The purpose of this study was to examine the visual portrayal of gender groups in elementary $"Chay{\tilde{o}}n"$ textbooks developed by the 6th National Science Curriculum. An instrument was developed to analyze the nature and type of activity engaged in by these groups as well as how often members of these groups were portrayed. Data were collected from 8 elementary $"Chay{\tilde{o}}n"$ textbooks. The results show the following two different features. While the elementary $"Chay{\tilde{o}}n"$ textbooks do not show gender-biases in representing science learning activities such as observing, experimenting, measuring, they show distinct gender-stereotyped roles and activities. It is expected that the results of this study are considered in developing the new elementary "Science" textbooks which show gender-fairness.

• Bulletin of the Korean Space Science Society
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• 1993.04a
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• pp.8-8
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• 1993

Long period eclipsing binary 32 Cygni was photometrically observed in 1992 at Yonsei University Observatory. Instrumental differential magnitude and standardized magnitude of this star show some intrinsic light variations. Some possible explanations will be discussed. BVRI photometric observations show that 30 Cyg may be a variable star. A further monitoring of 30 Cyg is therefore called for justification of such evidences.

• Honam Mathematical Journal
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• v.30 no.2
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• pp.247-258
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• 2008

In this paper, we show how certain topologies associate with ideals of subtraction algebras on subtraction algebras. We show subtraction algebras to be topological subtraction algebras with respect to theses topologies. Furthermore, we show how certain standard properties may arise. In addition we demonstrate that it is natural for these topologies to have many clop en sets and thus to be highly disconnected via the ideal theory of subtraction algebras.

• Bulletin of the Korean Space Science Society
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• 2004.04a
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• pp.39-39
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• 2004

It has been known that ring current particles can be lost through dayside MP(magnetopause). However, details of the loss mechanism of this process has not received much attention. In this study, we show that the solar wind dynamic pressure P$\sub$D/ can play a significant role in the dayside loss. In order to show that, we have first conducted superposed epoch analysis using 95 geomagnetic storm events selected from the period 1997 to 2002. (omitted)

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.285-287
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• 1998

본 논문에서는 다양한 멀티미디어 스트림(multimedia stream)을 재생할 수 있는DirectShow SDK를 이용하여, 비디오의 특수효과를 구현하기 위한 변환 필터(Transform filter) 제작 방법에 대해 소개한다. DirectShow는 여러 가지 포맷(MPEG, AVI, MOV, WAV)으로 부호화된 digital movie나 sound를 재생할 수 있는 run-time(.ock)과 dynamic-link library (DLLs)를 제공하여 필터의 제작을 용이하게 한다. 본 논문에서는 디지털 영상 특수효과 중에서 Clip이라는 특수효과를 예로하여 변환 필터를 제작하는 방법을 소개한다. 또한 DirectShow Documentation에서 제공된 변환방법을 수정하여 변환필터의 입력 pin에서 출력 pin으로의 불필요한 복사를 줄임으로써 수행 속도를 개선하는 특수효과 구현 방법을 제시한다.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.306-308
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• 1998

본 논문에서는 멀티미디어 스트림을 제어하는 표준으로 Microsoft사에서 제안한 DirectShow의 특성을 살펴보고, 디지털 오디오 효과 필터 5가지에 대한 요소를 분석하며, 분석한 자료를 토대로 파라미터 및 기본 기능을 설계한다. 이러한 설계를 바탕으로 DirectShow를 이용하여 디지털 오디오 효과 필터를 구현한다. DirectShow는 윈도 95와 윈도 NT 기반의 멀티미디어 스트림 제어를 COM으로 구현할 수 있게 한다. 따라서 구현되는 필터의 삽입, 삭제, 변경, 등이 용이하게 된다. 이 논문에서 구현한 오디오 효과 필터 5가지는 오디오의 기본적인 특성을 이용하는 필터로서 오디오 필터 구현을 위한 핵심 기술이 많이 이용된 필터라고 할 수 있다.

• Journal of The Korean Association For Science Education
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• v.28 no.6
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• pp.519-526
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• 2008

This study was planned to investigate the patterns and the effect of science journal writing on the science process skill and the scientific attitude of elementary school students. This study tried to show their perceptions about science journal writing in order to find out the value of science journal writing. For this purpose, one class of 6th graders in an elementary school was tested. The results from this research show as follows: Science journals are classified into 9 types according to content and form. Writings about curiosity are the most frequent. Science concepts are found in observational journal. Science journals are more effective in the development of the science process skills and scientific attitude. Students are revealed to be in positive aspects through the research about science journal. In conclusion, science journal writing should be emphasized in science education for elementary school students.

• Journal of Korean Ophthalmic Optics Society
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• v.16 no.3
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• pp.219-228
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• 2011

Purpose: The aim of this study was to analyze objectively customers' connotative meanings dependent on show window display types in optical shops. Methods: This survey was conducted on optometry students in Seoul in their 20's. We collected examples of the show window displays in Korean optical shops and deduced their representative types. After drawing out connotative meanings by the semantic differential method, we determined the connotative meanings correspondent to each show window display types by using a questionnaire and statisticl analyses. Results: Respondents chose 'clean and simple', 'luxury and simple', and 'folksy and practical' as connotative meanings of open-type, small amount-type, mass amount-type and commercial-type show window displays, respectively. Conclusions: Analyzing induced connotative meanings and correspondents' preference, we think that the small amount-type show window is the most appropriate display for college students consumer group.