• Journal of The Korean Association For Science Education
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• v.5 no.2
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• pp.113-137
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• 1985

It is the purpose of this study that is to develop the materials of the Scientific activities by the medium of "play" having influence on the growth of the lower grades in elementary school. For the sake of this object, this study develops and presents the materials of tile basic logical thinking play and sense-thinking play activities. And it analyzes the degree that they can be applied to the elementary science textbook of nature current now. As a result this provides 39 of materials of the sense-play and 23 of materials of the logical thinking play activities. And then, if the materials presented here are changed adequatly and have the same main subject as contents of the present textbook, we shall be able to utilize them for the textbook of nature.

• Journal of the Korean Society of Costume
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• v.24
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• pp.205-216
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• 1995

In this study, an experiment was made using the function of comfuter simulation as to whether the phenomenon of color optical il-lusion takes place also in clothing on the humanbody, three-dimensional space, through the case study of the color illusing of Goethe Value. One fat woman was slected as the exper-imental subject. She was made to wear the ex-perimental clothing, and then frontal picture was projected of in the experimental clothing, which was sacanned into the computer. For the sake of color illusion effect, construct 5 clothing design line and Yellow(9), Black(0), Red(6), Green(6). The basic design and the experimental de-sign were made one pair, and the pictures totalled 20 pictures. The extimating panel con-sist of 25 panellers and extimate factors of 9-point Scale. All the date from the experiment were analyzed by ANOVA and DUNCAN'S MUL-TIPLE RANGE. As a result, the experimental design all showed a significant optical illusion without C group in comparision with the basic design.

• Journal of the Korean Society of Costume
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• v.24
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• pp.235-251
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• 1995

The purpose of this study is to analyze the charateristics of foot according to foot type and analyze the change of foot shape by movements for the sake of making a comfort-able footwears. On the 6 foot type classified by F.I. and F. P. A, this study analyze the surface areas and circumference in the surface area development figure. There are selected eighteen college girls and four movements. The results are as followes : 1. In the 6 foot types classified by F.I. and F. P. A., the circumferences were differed sig-nificantly. 2. In the 6 foot types classified by F.I. and F. P. A., the surface areas were not differed siginificantly. 3. By movements, circumferences and surfaces were not significantly changed according foot type. 4. By movements, the circumference IV, V were changed variously. 5. By movements, surface area of toes, M.P. joint and ankle were changed variously.

• Journal of the Korean Society for Precision Engineering
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• v.9 no.3
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• pp.53-60
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• 1992

This paper deals with developing an Expert system for tool selection using knowledge base system approach, and its application. For the sake of building of knowledge base, the information from process through sensor, tool handbook and interview with expert are referrenced and managed. The system developed shows good application flexibility in providing the actual cutting process with the selection of tool(insert, holder) and cutting conditions(feed, speed, rake type, and so on), is found as a useful system for real-time machining process. The Expert system for tool selection is written in TURBO PROLOG ver. 2.0 for inference engine capability, and can be run in interactive mode for user friendliness. In order to apply the system developed in actual cutting process, more parameters should be considered and scrutinized, and the system should be further extended in modular basis.

• Bulletin of the Korean Chemical Society
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• v.27 no.8
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• pp.1194-1198
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• 2006

For the purpose of developing more effective chelating agents, we have synthesized a diethylene triamine pentaacetic acid(DTPA) analogue by using an amino acid. S-(N-Boc-aminophenyl)-Cys(t-Bu4-DTPA) methylester was prepared in 6 steps with total yield of 47.9%. For the sake of introducing a biomolecule to the DTPA derivative, a selective hydrolysis was performed with 3 M HCl/Ethylacetate = 1 : 3 ($25{^{\circ}C}$, 30 min, vigorous stirring). $^{166}Ho$-Cys-DTPA and $^{166}Ho$-Biotin-Cys-DTPA were prepared by mixing $^{166}Ho$ with DTPA derivatives at room temp in a HCl solution (pH = 5) and the radiochemical stabilities (> 99%) were maintained for over 6 hrs in vitro.

• Journal of the Korean Society for Precision Engineering
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• v.22 no.11 s.176
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• pp.151-158
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• 2005

Micro-machine tool is essential in the micro/meso cutting for the sake of saving of space, resources, and energy. In this research, a micro-turning lathe was fabricated with piezoelectric feed drive mechanism, and motion of each axis was generated by stepwise mechanism with two piezo actuators. The resolution to drive the axis was $0.05{\mu}m$ and position accuracy less than $2{\mu}m$ was assured. From the positioning experiment, piezo feed mechanism is good enough for the micro machine tools. Many fuming experiments were carried out with diamond-cutting tools to evaluate cutting capability of a machine tool. Continuous flow type chip could be obtained even if the cutting speed was very low due to small diameter of workpiece. However, thorough investigation about machineability in micro/meso cutting is inevitable to assure high quality surface roughness in micro machine tool.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.326-329
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• 2004

본 연구에서는 김치로부터 분리한 L. brevis, L. curvatus, L. plantarum, L. sake가 발효소시지 환경에 잘 적응하는지 그리고 어떠한 발효 대사 특성을 가지는지에 대해 조사하였다. 조사한 젖산균들 중에서 L. plantarum은 가장 좋은 성장도와 함께 좋은 pH 저하 능력을 보여주었을 뿐 아니라 homo-fermentative 특성을 보여주어 starter culture로 사용될 가능성을 보여 주었다. 또한 L. plantarum은 첨가된 nitrate나 nitrite를 분해하는 능력까지 보여 조사한 젖산균들 중에서 starter culture로서 가장 적절할 것으로 여겨지나, 이들도 첨가된 nitrate나 nitrite에 의해 그 성장도가 저해되는 현상을 볼 수 있었다.

• Journal of the Korean Institute of Landscape Architecture
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• v.27 no.1
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• pp.54-63
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• 1999

The Landscape drawing is used as main media in landscape design process like the language in daily life for human. Designers input many intentions and meaningful words in design process through landscape drawing. The common purpose of landscape drawing is to represent reality effectively, even though it has variable visual forms and materiality. The representation in landscape drawing in metaphorical as well as visual and functional. But current tendency is inclined to use landscape drawing in a functional aspect for visual representation and the landscape drawing is utilized straight-forwardly rather than metaphorically for clear communication. Such recognition on landscape drawing results from the difficulty to accept the symbolic aspect of the drawing. The difficulty makes the utilization and the interpretation of landscape drawing stay at conventional level in following visible factors. For the sake of solving the difficulty this study considers landscape drawing as the text that contains readable objects and symbolic words. This study presents layer-methods for reading a landscape drawing as a text; situational and contextural reading, iconological reading and reading the subject of drawing.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2001.11b
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• pp.149-152
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• 2001

In this paper, aging diagnosis method of CV cable was investigated. CV cable was designed for the sake of using during 30 years. Therefore it was important to evaluate the cable's remaining life because CV cable used for power transmission line since 1970's. CV cable was mainly installed at the underground owing to the environmental condition. If the cable accident occurred, it needs the much time for the accident recovery and the much damage at the industrial activity. therefore, this paper should study the direct leakage current method, a sort of the cables' aging test method

• Proceedings of the Korean Information Science Society Conference
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• 2012.06b
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• pp.447-449
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• 2012

This paper present an intelligent microcontroller based chess playing robot which can play a board game against opponent and calculate its moves in a non-idealized environment. In this work, for the sake of simplicity task is accomplished by using Cartesian coordinate system. Chess playing system has been designed in such a way that it provides an interface between user and robot to control chess movements using RS232. Various algorithms are implemented for interfacing hardware in C++ language. Our main goal is to design a cost effective and highly accurate robot system that consumes minimal power to complete its task.