• 대한조선학회논문집
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• 제44권6호
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• pp.627-634
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• 2007

A bonded plate or a coated part can be debonded by external impact or thermal expansion. To analyse adhesive strength, the blister test is generally adopted. In this paper, a blister test is modelled theoretically and then the stability and bifurcation of the blister are studied under several different cases. The blister is simplified to consist of a pure bending plate attached elastically to the rigid substrate. Expression of the energy release rate is obtained as a form of an explicit function for a circular-type blister or tunnel-type blister grown by controlling the internal pressure or internal volume. Stability and bifurcation are also studied in the frame of the quasi-static evolution. The study shows that the circular- type blister propagates with the first mode of bifurcation and that the tunnel-type blister propagates with a regular wave. It is proved that the waves have the same form on two side lines of the tunnel and that the wave length can be obtained. When the internal pressure is controlled, the blister is unstable, but when the internal volume is controlled, it is stable.

• 복식
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• 제5권
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• pp.83-101
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• 1981

This study is to research and analyse the Musicians' Costumes in Yi dynasty. Each costume for the musicians was, at that time, different in its design and style in accordance with what class the musicians were belonging to and what ceremony they were playing for, and the form and substance of them were changed according to the ages. In the early of Yi dynasty, the musicians wore their costumes imitated from the Song dynasty's. Especially in the 13th year of King Sae-Jong(1431), they divided the costumes into A-ag-Seo Jeon-ag Gwan-bog(雅樂署 典樂冠服) and Jeon-ag-Seo Gwan-bog(典樂署冠服). Meanwhile the musicians had to put on their different kinds of costumes according to the sorts of ceremonies they were playing for since January of the 16th year of king Sae-Jong(1434). It is widely known that confucianism was made a national policy in Yi dynasty. Compared the musicians' costumes for sacrificial rituals, however, with those for every kind of ceremony, one was simpler and shabbier without any strictly established forms than the other. At the same time, the musicians' costumes for ceremonies were, instead, designed in more gorgeous forms; it means that the sacrificial ritual was very lightly dealt at that time. It is very difficult to define, by standard pictures the whole style and form of the musicians' costumes in Yi dynasty in this study. Since we haven't shown any examples of the costumes, this attempt will be keepful.

• 한국정보통신학회논문지
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• 제8권8호
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• pp.1835-1842
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• 2004

상용화된 데이터마이닝 제품들은 대부분 완성품의 형태로 이들 기능들의 일부 또는 전부를 지원한다. 완성품은 구입 즉시 사용할 수 있다는 장점은 있으나 사용자 및 기업의 요구사항이나 환경에 유연하게 적응할 수 없는 문제가 있다. 본 논문에서는 데이터마이닝시스템을 완성품이 아닌 커스터마이징의 형태로 도입 및 구축하기 위한 방법론을 제안하고, 실제 오라클 제품을 이용하여 거스터마이징을 하는 사례를 살펴본다. 그리고, 구축된 데이터마이닝 시스템을 이용하여 판매 데이터를 분석한 사례를 제시한다.

• 한국도서관정보학회지
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• 제37권3호
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• pp.357-379
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• 2006

해외 한민족의 정보자원의 생성과 변화는 민족공동체의 존립방식이나 사회변동에 많은 영향을 받고 있다. 이 연구의 목적은 러시아의 곳곳에 산재해 있는 고려인이 생산한 한글정보자원 현황 (1900-1937)을 조사하고 분석하는 것이다. 러시아에서 고려인의 정보자원은 고려인의 이주역사와 함께하고 있다. 이 연구에서는 고려인 사회와 정보자원, 그리고 고려인 디아스포라의 형성과 발전과정, 고려인 한글정보자원을 출판형태와 주제, 소장 기관별로 나누어 실태조사를 하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 ICEIC The International Conference on Electronics Informations and Communications
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• pp.97-102
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• 2004

The very complicated proplem in spatial processing is effects of phading (Multipath and Delay Spread) and co-channel interference (CCI). The phading is one of principal causes, that form inter-symbol interference (ISI). Spatial-Temproral Adaptive Filter (STAF) has been taken as a solution of this problem, because it can suppress both these types of interference. But the performance of STAF exposes some elemental limitations, in which are the slow convergence of adaptive process and computational complexity. The cause of this is that, STAF must treat a large quantity of information in both space and time. The way that master these limitation is a use of Subband Spatial-Temproral Adaptive Filter (SSTAF). SSTAF reduce computational complexity by pruning off samples of signal and thus it lost some information in time. This draw on attennation of output SINR of SSTAF. The article analyse a optimal solution of this problem by introducing SSTAF with nonuniform weighted distribution.

• 융복합기술연구소 논문집
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• 제3권2호
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• pp.7-10
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• 2013

Metal oxides are known as stable materials during a thermal treatment. However, some oxides are readily evaporated at high temperatures. A voloxidation process is a head-end process for a pyroprocessing dealing with spent nuclear fuels (SF). In SFs, fission productions are in the form of oxides and some of them would be evaporated during the voloxidation process. Therefore, it is of importance to analyse the vapor pressures of metal oxides so that the material flows throughout the pyroprocessing could be estimated. In this work, vapor pressures of relevant metal oxides were calculated and presented to draw a baseline on the material flow of the pyroprocessing.

• Structural Engineering and Mechanics
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• 제29권6호
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• pp.623-642
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• 2008

While spatial plastic mechanism analysis has been widely and successfully applied to thinwalled steel structures to analyse the post-failure behaviour of sections and connections, there remains some contention in the literature as to the basic capacity of an inclined yield line. The simple inclined hinge commonly forms as part of the more complex spatial mechanism, which may involve a number of hinges perpendicular or inclined to the direction of thrust. In this paper some of the existing theories are compared with single inclined yield lines that form in flange outstands, by comparing the theories with plate tests of plates simply supported on three sides with the remaining (longitudinal) edge free. The existing mechanism theories do not account for different in-plane displacement gradients of the loaded edge, nor the slenderness of the plates, and produce conservative results. A modified theory is presented whereby uniform and non-uniform in-plane displacements of the loaded edge of the flange, and the slenderness of the flange, are accounted for. The modified theory is shown to compare well with the plate test data, and its application to flanges that are components of sections in compression and/or bending is presented.

• 한국주거학회논문집
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• 제17권4호
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• pp.83-91
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• 2006

Although the large supply of multi-family housings played a very important role in forming the urban structure and allocation of functions, and also enhanced the whole level of housing environment, it caused several problems relating to physical form such as isolation of housing estate, inhumanity of the exterior space, and mismatch with the urban structure. To handle these problems, the purpose of this study is to analyse design elements which have a direct impact on physical forms, thereby understand the characteristics of planning. Therefore design elements are reformed into respective analyzing indices. This study analyzes design elements based on analysing indices. Thus, several important results were found from the Factor Analysis and after classifying housing estates into several types, the study found the characteristics of planning within each type of housing estates.

• 한국염색가공학회지
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• 제30권1호
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• pp.1-8
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• 2018

In the present study, three morpholine substituted crystal violet lactone (CVL) have been synthesized to monitor the thermochromic property. This work is explaining the role of substituent on the lactone ring. The methyl substituents induced greater chromic effects than the chloro substituents. Furthermore, the three-component mixtures that contained CVL, bisphenol-A, and methyl stearate were used to analyse the thermochromic effect of the CVLs as bulk samples with various temperature. The thermochromic properties of the CVLs were evaluated using solid-state UV-Vis and FT-IR spectroscopic techniques. Finally, one of the synthesized CVL has been successfully converted into the form of a test paper similar to pH paper for use as thermal indicators.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2000년도 추계 학술대회(The 2000 Autumn Conference of korea Technology Inovation Society)(한국기술혁신학회)
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• pp.346-356
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• 2000

This paper aims to analyse the relationship between R＆D investment and economic growth in Korea. The analysis result shows 38 percent of average economic growth rate(7.1%) of Korea between 1976 and 1998 was achieved by the growth of Total Factor Productivity (TFP), and the R&D investment during the period contributed in achieving the economic growth rate by as much as 9.86 percent. In the process of the estimate, the rate of return of the R&D investment from both government and private was calculated as 47 percent. The relationship between private R&D investment, government R&D investment and the GDP was also investigated, and it was estimated that the private sector invested 2.0 percent of the GDP in R&D during the period, and was found that 1 won of government R&D investment induced 0.202 won of private sector's R&D investment. However, the time-lag effect, which is naturally believed to exist between the R&D investment and the economic growth, could not be analysed in a mathematical form, because of the lack of the data to establish this relationship. However, this paper believe that the time-lag effect in this relationship was included implicitly by using the data of 23 years.