• Journal of applied mathematics & informatics
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• v.7 no.2
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• pp.539-552
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• 2000

In this paper, we established the general comparison principles for IVP of impulsive differential equations with time variables, which strictly extend and improve the precious comparison results obtained by V. Lakes. et.al . and S.K.Kaul([3]-[7]). Whit the general comparison results, we constructed the monotone iterative sequences of solution for IVP of such equations which converges the maximal and minimal and minimal solutions , respectively.

• Journal of the Korean Society of Costume
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• v.38
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• pp.337-358
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• 1998

Underlying principles on the origin and establishment of the concept fo Right-and-Left (R-&-L) in Korean traditional costume is studied in this paper. Among Korean traditional costumes, ordinary and funeral costumes are considered in this study. Thed concept of R-&-L expanded into different elements of daily life among Korean people is also considered as a process of conceptual development : starting from astron-omy principle, then developed to pragmatism principle, and expanded to abstraction principle. No evidence on the case where the astro-omy principle was directly applied to was found in this study. In most cases, pragmatism and abstraction principles are observed as underly-ing principles. In ordinary costumes, pragmatism principle is the fundamental base for R-&-L through right-hand-use rule. Even though abstraction prin-ciple was found in some ordinary costumes, we believe that this was generated for adding more meanings in addition to the pragmatism principle. In funeral costumes, pragmatism principle was almost totally ignored unlike in ordinary costumes because the funeral rite was performed though formality with abstract thoughts. The abstraction principle was exercised with the form of simple-discrimination rule based on the dual system along with Yin-Yang related cultural rules such as‘Yang-left-and-Yin-right’or‘father-left-and-mother-right’. However, the case where‘left-male-and-right-female’rule is applied to was not found in this study.

• Korean Institute of Interior Design Journal
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• no.5
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• pp.17-23
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• 1995

Placing itself in position of spectators, museum should be able to explain to them what meaning the medium of exhibi-tion has and what role it has to paly. For that, it is an indispensable process to plan an archite-ctural environment and exhibition presentation suitable to the exhibition which are main objects of museum, but as a result of its being reglected by this time, it has been recog-nized as a tigid and formal place closed and estranged from the general public. The authoritarian aspect of museum resulted from its sys-tem negative to the people of our country, while its services have been developed as a place in which one understand a country most quicky. Recently, however, as a movement of participating in the newly changing general trend, the contest of design of the new National Museum was announced publicaly worldwide introducing the Museografia method of planning exhibition presentation after thorough analysis of exhibition, which made it known that an importance is intensely put on the en-vironment of relics and their exhibition. The purpose of the study is to analogize the planning prin-ciple of the interior design of the exhibition room of sculp-tures, placing emphasis on the exhibition presentation intro-ducing Museografia as a way of examining the problems and solving them concerning the existing standardized uni-form method of displaying exhibition. The way of conducting the study are as follows.