• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2424-2429
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• 2003

The importance of e-Learning, which supports to study anywhere and anytime, has been pointed out for improving education. There have been various research papers on e-Learning system for educations. Most of literatures have focused on guiding the student or measuring understanding their level etc. Design method of e-Learning system has not been discussed based on structure and analysis of the class. In this paper, scheme of the class is proposed by analyzing and structuring class, then design method of e-Learning system is discussed based on it.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.20 no.1
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• pp.275-283
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• 1996

The turbulence in the engine cylinder is generated by intake pressure and inertia effects during intake stroke, and is generated and decreased by piston compression effect during the compression stroke. The classified needed to generate high turbulence flow at vicinity of ignition timing. Therefore, A single-shot Rapid Intake Compression Expansion Machine (RICEM), which is able to realize the intake, compression, expansion or intake-compression stroke under high piston speed respectively, was manufactured and evaluated in order to find methods to generate high turbulence at around spark timing. It was found that the characteristics of RICEM such as reapperance, leakage, piston displacement with crank angle was corresponding to those of real engine and RICEM simulates not only high temperature and high pressure field but also flow patterns of the actual engine by increasing of pressure in intake line.

• Korean Journal of Veterinary Research
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• v.29 no.3
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• pp.223-229
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• 1989

These studies were carried out to investigate the changes of blood pictures, hitological findings and testosterone concentrations after orchidectomy in ageing rat. The results obtained were summarized as follows: 1. The total W.B.C. counts were $9.27{\pm}12{\times}10^3/mm^3$ in the control group, $9.54{\pm}34{\times}10^3/mm^3$ in the sham-operation group and $12.08{\pm}28{\times}10^3/mm^3$ in the orchidectomy group when it was checked 50days after the operation. 2. The number of lymphocytes after orchidectomy began to increase gradually as time passes, thereafter markedly increased $10.12{\pm}03{\times}10^3/mm^3$ at 50days after orchidectomy. 3. The concentration of testosterone in serum began to decrease gradually after orchidectomy showed lowest level $1.68{\pm}0.61pg/ml$ at 50days after orchidectomy while it was $5.82{\pm}0.39pg/ml$ in control group. 4. The histological findings of thymus after orchidectomy were marked increase of thymic lymphocyte, disapearance of fat cells and appearance of mitotic figures.

• Journal of the Korean Society of Costume
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• v.53 no.7
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• pp.57-68
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• 2003

The purpose of this study is to develop a creative perspective technique in fashion illustration through analyzing perspective in visual art experienced a great variety. This study was analyzed by examining the general theories based on the discovery of perspective and investigating the modern perspective in fashion illustration related to the method of spatial expression in visual art. A complex perspective of existing perspective gives the effect of reapperance of actual space and three-dimentional form in a plane. Because of being used as not only one perspective technique but also some perspectives technique, its expression can be more realistic. An amplified perspective gives the effect of visual illusion just like being suck in space inside and come out from screen outside by distorting the human body. A confused perspective of space gives the visual illusional effect of collapsing actual space and misunderstanding three-dimensional form by distorting the form of the space and changing the nature as an object of fashion. A reiterated or duplicated perspective gives effect of interpreting invisible space as imaginary space by overlapping and eliminating the object of fashion. An irrational perspective of spatial illusion gives the effect of disorganization experienced thinking by strange shapes and new recognition of irrational space by extraordinary visual connection. It has a tendency to surrealism. In conclusion, the modern perspective in fashion illustration has made the best use of not only new perspective since 1980, but general perspective before 1980. By the modern perspective expression. the viewer has made a chance to experience imaginary spaces indirectly, and the author has been able to express emotions by his or her new attempt in the screen.