• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.724-727
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• 2005

Material selection is one of the important activities in design and manufacturing. A selected material at the conceptual design stage affects material properties of the designed part as well as manufacturability and cost of the final product. Unfortunately there are not many accessible material databases that can be used for design. In this research, a web-based material database was constructed. In order to assist designers to compare different materials, two-dimensional and three-dimensional graphs were provided. Using these graphical tools, multi-dimensional comparison was available in more intuitive manner. To provide environmental safety of materials, the database included National Fire Protection Association publication Standard No.704. The web-based tool is available at http://fab.snu.ac.kr/matdb.

• Journal of Fisheries and Marine Sciences Education
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• v.15 no.2
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• pp.184-192
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• 2003

When the present Learning System for Computer-Related Subjects Using WBI is implemented on the Web with the above characteristics to help students to study computer subjects without any limitations of time or space, they can easily attain the goals of learning, have computer-utilizing abilities or information capacity, and enhance their capabilities for self-initiative learning. This system enables the learners to carry out 'plan-do-see' for the contents of learning initiatively. The learners can study the practice part of the curriculum using multi-media, such as motion pictures, voices, images, and sound effects, vividly with a sense of actual presence. It helps the students to have an active attitude toward leaning afterward. without meeting the teacher or without any storage media, the leaners can submit their assignments or materials for performance evaluation via the Internet.

• The Journal of Korean Association of Computer Education
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• v.8 no.2
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• pp.53-60
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• 2005

The teaching plan is an important material for teaching and learning, and it goes through many hardships to make out it. Although these materials have been shared through web and referenced for making their teaching plan by other teachers, it has been little utilized yet in learning. In this paper, we proposed a strategy for utilizing the teaching plan as a useful material in learning and had developed the web-based system for managing and utilizing the teaching plan based on the strategy.

• Journal of Korean Home Economics Education Association
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• v.15 no.3
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• pp.59-73
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• 2003

This study aims to review and analyze the contents related to environment among curriculum of Technology$.$Home Economics subject; to produce multimedia learning materials and web-based materials for effective environmental education: and to find the way to effectively utilize them in schools. The data were analyzed by t-test with SPSS Win 10.0 program. The results of this study are as follows; First, the textbook carries a lot of contents concerning the environment. Second, the multimedia materials help students to understand environmental issues and strengthen their attitudes of environmental problems very effectively. Third, after using the instructional multimedia materials, the students showed significantly different results.

• Journal of Gifted/Talented Education
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• v.13 no.1
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• pp.81-95
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• 2003

There have been tremendous needs and requirements of special education for the gifted to the level of country development and for developing their talents. Even though a lot of research has been done on special education for the gifted supported by the government, lack of educational materials and material development has been a main concern. Some trails using the web with the help of information technology have been made on distance education and resulted good effect on education. No application using a web-based educational method has been made on special education for the gifted so far. This paper describes about the web-based special education for the gifted on mathematics. The discussed topics are development of educational materials, compliments of the current educational materials in mathematics being used at the KIGES(Kyungnam Institute of the Gifted Education in Science), and the continuation of special education for the gifted. Furthermore, a better and more efficient way is suggested for special education for the gifted that has been limited by geographic and locational restrictions.

• The Journal of Korean Association of Computer Education
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• v.4 no.2
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• pp.1-11
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• 2001

The computer subject emphasizes practice centered teaching. The materials can be used in such practice teaching play a role as resources improving poor practice teaching environment. Web courseware can be used as teaching-learning materials causing motivation and interest to learners and enabling learning activity meeting students' level and requirement. So, we developed 15 web coursewares as teaching and learning materials for middle school Computer subject in this study. The design forms of web coursewares we developed are different each other. And then, lead teachers to develope teaching and learning materials originally and to apply them to teaching variously. In addition, the practice parts of web coursewares were made of form of sham learning appling procedural simulation skill. It enables individual practice of learners, so we expect improving one to many instruction environment somewhat.

• School Mathematics
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• v.1 no.2
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• pp.661-677
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• 1999

This paper is preliminary study for developing Web-based instruction material to practice open mathematics education in middle school using Web as educational environment. For this purpose, the (textbook-based) curriculum was analysed and then more flexible and differentiated dynamic (web-based) curriculum was suggested.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.23 no.3
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• pp.105-137
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• 2012

The historical, social, and cultural value of Internet resources is indisputable, therefore many national institutions have created Web archiving projects to hand down this heritage to future generations. The selection guidelines are the most crucial aspect of these projects because they aid in differentiating which resources are worth collecting and preserving from the large number of web resources available. The purpose of this study was to suggest improvements for the OASIS Selection Guidelines by analyzing the selection guidelines of other domestic and international Web archiving projects. First, based on the results of Web archiving projects abroad, we proposed improvements for the definition of Web data and other terms, the basic principles of the collection, collection methods, and collection cycle. Second, we proposed substantial improvements in the target resources for archiving, and also stated what kind of web resources must be excluded from Web archiving. Finally, we discussed the relationship between data collection methods and the legal deposit of online resources, the necessity of constructing a database for selected target materials, and the necessity of cooperative archiving policies.

• Journal of the Korean Society for Heat Treatment
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• v.26 no.2
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• pp.59-65
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• 2013

The microstructures and hardness distributions of a large-sized high strength H-sectional steel with both V and Nb were systematically examined. The outer surface of the flange part was composed of martensite and bainite due to faster cooling, and had a high hardness value of approximately 310 Hv. However, the amounts of ferrite and pearlite increased and the hardness decreased with increasing the distance from the outer surface at the flange part, except the inner surface. High hardness value of about 290 Hv was measured at the upper surface of the web part having martensite and bainite. The hardness drastically decreased with increasing the web thickness, and then greatly rose again at the lower surface due to bainite formation caused by fast air cooling. The hardness of the flange part was higher than that of the web part due to the larger amount of low-temperature transformed phases, except for the lower surface of the web part. Nb-rich precipitates of 30 to 50 nm and V-rich precipitates less than 20 nm were observed at both flange and web parts. However, the particle size was smaller at the flange part than the web part, resulting in the higher strength of the flange part.

• Journal of Gifted/Talented Education
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• v.13 no.2
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• pp.113-130
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• 2003

In this study, learning materials that can be applied for web-based distant learning model were developed based on the characteristics of elementary school science in which investigation skills and thinking ability are considered to be important. And the effect of students' activity in a reports on student's investigating and thinking ability was investigated. While designing diverse experimental procedures, the students had. an opportunity to improve their observation attitude and way of scientific thinking. Such improvement was possible, only because the present web-based distant learning model consists of requiring an interaction between the students and a report and evaluation system which can put together such effort. Still, it was acknowledged that, as being in lack of teacher's direct support and supervision, the present web-based distant learning model might be somewhat ineffective in guiding the students in accordance with their own characteristics. For example, the students had a tendency to maintain their basic idea and style even when their reports are individually examined and corrected in terms of the format of the report.