• Transactions of the Korean Society of Mechanical Engineers
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• v.6 no.4
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• pp.315-322
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• 1982

The slab analogy method was introduced in the 1920's for the first time as a new experimental stress analysis method. Notwithstanding its theoretical propriety, this method has not been recognized as efficient one because of its difficulty in practical measurement of the slab curvature. In this paper, aiming at experimental determination of two-dimensional stress intensity factors(S. I. F) of arbitrarily shaped cracks which had been regarded as almost impossible by conventional method, the slab analogy was reevaluated. Measuring of slab curvature was replaced by three simple measuring factors to overcome vital slab-analogy's shortcoming by joint use of the shadow-moire method. A determination formula was also derived from the theory of fracture mechanics. By this newly exploited method, it was found that the slab analogy still has its great advantage in determination of S.I.F. of arbitrarily shaped cracks with considerable accuracy compared with existent experimental methods.

• International Journal of Contents
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• v.4 no.4
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• pp.24-29
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• 2008

In 1920s, Soviet silent films enjoyed unprecedentedly great prosperity throughout world film history. Particularly, Dziga Vertov could develop 'montage' in collaboration with Sergei Eisenstein and thereby could work as the engines behind development and leap of Soviet films toward 'new concepts' of 'new films' worldwide. However, Vertov's original reputations - the best film theorist and avant-gardist as well as great cineaste in his contemporary age - have been misunderstood or underestimated, so that he has been still misestimated or distorted as radical formalist and documentary propagandist. In regard to these points, this study aims to take Gilles Deleuze's modal esthetic approaches to further considering and historically re-highlighting D. Vertov's film theories that are based on the principle of 'film-reality' and the concept of 'Life As It Is' according to 'kino-eye' method and 'interval' theory as a part of futurism and constructivism breaking down any attribute of traditional narrative films.

• Journal of the Korean Institute of Rural Architecture
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• v.17 no.2
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• pp.27-34
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• 2015

As part of the waterway restoration to renew traditional urban area, this paper is to assume and research Gyoseocheon(Gyoseo waterway) in Late 1960s Cheongju Korea. The main stream of Gyoseocheon flew from Sangjwagol(the head of the valley) of Uam Mt. to the north gate under Cheongju castle at first, and meandering from Sangdang Park, flew through Sudongseongdang and Bangadari Road to Musimcheon since open railroad of 1920s. This waterway, the eco-friendly figure of Gyoseocheon, that flew to inside the downtown with a planted tree and that is open space was so. The sub stream of Gyoseocheon originated in Seoundong and Tapdong were divided into two parts. One was to join the main stream of Gyoseocheon on Sangdang Park via Munhwadong, and the other was to join the sub stream of Musimcheon at northwest corner via south and west gate of Cheongju castle. This waterway as branch sewer were built into the road culvert.

• (The)Korea Educational Review
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• v.17 no.3
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• pp.175-240
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• 2011

The purpose of this study is to understand how the perception and attitude in children's education have changed over the 20th century in South Korea by searching the newspaper articles. The modernization in 20th century brought radical changes in every aspect of Korean society including education. As an educational attitude and policies from the government changed, so did the tones reflected in the newspaper articles. To sum up, there were four (4) principal changes found from this study as follows;Firstly, parental involvement and role as an educator became more important in Korean society and huge generation gap arose in attitudes towards children's education and custody. Secondly, the traditional gender-based roles of mothers' with image of love and fathers' with strength disappeared and mothers' responsibility of children's education were more emphasized during 20th century. Meanwhile, today's society is calling for an immediate return of fathers' involvement and commitment to children's education in the household. Thirdly, as the overflow of information and knowledge in 20th society caused an excessive interest in children's education, there were rising demands for establishing proper views and ideas on children's education. Lastly, the responsibilities of children's education which had been laid on household was expanded to public and government, which can be seen from the fact that an educational support from the government was extended to the children of overseas Korean as well as those residing in Korea.

• (The) Research of the performance art and culture
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• no.22
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• pp.327-370
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• 2011

Shakespeare's text "Hamlet" was first introduced in Korea in the first part of 1920s by Hyeon Cheol via 『Gaebyeok』. Its performance of whole acts was realized in Kinema Theater in Daegu by the direction of Lee Hae-Rang (translated by Han Lo-Dan) in September, 1951, during the Korean War. Since then, a variety of performances were carried out by numberless performing artists and performing groups in the 1960s, 1970s, 1980s and 1990s. The purpose of this study was, among numberless performing artists and performances appeared in the history of performance of "Hamlet", to examine Lee Hae-rang's direction standpoint of "Hamlet", which has been one of the mainstays since the 1950s. For this, among many performances directed by Lee Hae-rang, the investigator referred to the performing scripts and performance criticisms for the opening performance of Drama Center in 1962 and the performances in HOAM Art Hall in 1985 and 1989, focusing on the text "Hamlet" performance in 1951. In the second chapter, the concept, standpoint and background of realism, the base of his theatrical activities in his lifetime, were examined. In the third chapter, before analyzing his direction standpoint for text "Hamlet", the traditional and modern concept of text was summarized and a variety of standpoints and viewpoints for the text were analyzed. And based on the above summary and analysis, his direction standpoint was analyzed and examined, thus presenting a clue for the discussion on the position of Shakespeare's text "Hamlet" directed by Lee Hae-rang in the Korean history of performance and its performance aesthetics.

• Journal of Oriental Neuropsychiatry
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• v.1 no.1
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• pp.71-80
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• 1990

For giving a person to understand that the relation between being used medicine and psychiatric medicine in the Nae ui won(內醫院). The psychiatric medicine were studied in the Nae ui won's diary. The results are as follows ; 1. It is supposed that the symtoms of Geong Chung, Hyun hun (眩暈) and Bulmyn(不眠) mainly appeared in 1908. 2. It is supposed that the symptoms of Guibeong(氣病) and ulchung(蔚症)mainly appeared in 1920. 3. It is supposed that the symptoms of Guibeong(氣病) and Talyeong(脫營) mainly appeared in 1924. 4. There were Cheongshim(淸心), Anshin(安神) and chingan(鎭肝) which added to a regular medical prescription. Finally with the help of these conclusions of which we have refered, we found that the cause of disease were changed according to the social situation of being free or repressed, and it also coinside with what Nae ui won's record said and practical result.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2003.10a
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• pp.9-12
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• 2003

Clubroot disease of curcifer crops caused by Plasmodiophora brassicae had been first reported in 1920 in Korea, and maintained mild occurrence until 1980s. Since 1990s the disease has become severe in alpine areas of Kyonggi and Kangwon, gradually spread to plain fields throughout the country, and remains as the greatest limiting factor for its production. Researches on the disease has begun in late 1990s in our laboratory after experiencing severe epidemics. Survey of occurrence and etiological and ecological studies have been carried out, particularly, on the pathogen physiology, race identification, quantification of soil pathogen population, host spectrum of the pathogen, and control measures.(중략)

• Korean Journal of Heritage: History & Science
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• v.54 no.1
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• pp.18-31
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• 2021

Linoleum is a resilient, hygienic, and eco-friendly floor covering. It was developed in England by Frederick Walton in 1863. Made of cork flour, linseed oil, and burlap as its main materials, the flexible and waterproof linoleum became globally popular in the early 20th century. Unlike the vinyl coverings, the burlap-backed linoleum was used not only in commercial spaces but also in household areas like kitchens, bathrooms, and even living rooms. As a global product, linoleum was imported and used in Korean palaces like Deoksugung and Changdeokgung in the early modern period. According to the record Deoksugung Won-Ahn, linoleum was applied to the major buildings, including Hamnyeongjeon, Deokhongjeon, and Jeonggwanheon, and various other venues. The linoleum used in these places are mainly monochrome blue and brown color, which probably means that they are from England. The trade records in the early 20th century show that linoleum was imported mainly from England and America. The Ewangjik building floor plan in the Changdeokgung Palace shows that linoleum was used extensively. There are even some originals, which were laid in 1920 and left in the Changdeokgung Palace. When Daejojeon and Huijeongdang were rebuilt in 1920, the interior was outfitted with western features and linoleum was used in areas such as bathrooms, the tonsorial parlor, and one of the rooms on the west side of Huijeongdang. In situ in the Daejojeon and Huijeongdang areas in the Changdeokgung Palace are monochrome, patterned black, and stylized floral tile patterned, which are closely similar to American products made by ALC and Armstrong company. This study will help us better understand linoleum's characteristics, its uses and the material itself. It will also form the basis for the restoration of Changdeokgung Palace as well as other modern interiors with linoleum flooring in the future.

• Korean Journal of Plant Tissue Culture
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• v.24 no.4
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• pp.203-212
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• 1997

The impact of plant genetic engineering, a technology born in the early 1980's, is beginning to be felt across the world in the 1990's. The first wave of engineered plant produce are reaching consumers in the supermarket and many more are destined to follow Transformation technology now exists for most plant, including the four staple crops-maize, wheat, rice, and soybean. Early targets of genetic engineering include plane possessing insect resistance and herbicide tolerance, with future goals set on increasing harvestable yield, improving nutritional quality, and making specialty products. This review describes some of the milestones in plant biotechnology, the U.S. regulatory agencies, field trial numbers and deregulated plants, commercialization criteria, examples of commercialized plants, and future prospects of plant biotechnology.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.8
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• pp.1364-1377
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• 2010

Although the human body is a biological subject with definite and distinctive physical features, its actualization and perception differs among societies. The aesthetics of the human body are based on diverse cultural perceptions that must be considered prior to design development. This study establishes the foundations of newly adopted concepts of beauty that are presumed to have been established in the first half of the twentieth century that continue to affect our mindset even now. The research includes human figures in the articles of women's magazines and cosmetic advertisements in the early $20^{th}$ century. The results are as follows: First, the change of perception in the human body: Instead of being a subject of preservation, the body has become a subject of sculpture with emphasis on health in the 1920's and on beauty in the 1930's. The recognition of the importance of the body has created intensive attention on physical training and an increased sense of hygiene. The body exposed to the public perceives itself through the eyes of others that alter one's own perception of oneself as well as become a target of evaluation. There is an additional emphasis on the exotic eroticism of a passive subordinate. Western culture became the standard for modernization along with the dissociation of traditional standards and values. Through the effect of education and western thinking, the awareness of women's rights and self-appreciation was developed. Second, ideal beauty can be summarized as follows: Unprocessed natural beauty was extolled as ideal in the 1920's, but the 1930's, it highlighted big eyes and an aquiline nose that are the characteristics of western women. Taking care of one's appearance was recognized as an important value for every social class. Cosmetics and skin care treatments promised soft and white skin. In contrast to western cosmetics, dark and shiny hair was highly favored. Exercising and traveling, differing seasonal and regional skin treatments were also widely accepted. In its initial stages, the research had originally assumed that the beginning of the twentieth century would be a time in which traditional concepts of beauty and new, westernized aesthetics coexisted. However, as the research progressed, it was clear that the idea of beauty had already adopted occidental ideals by that time. Thus, it seems necessary to continue the study on the shifting paradigms of beauty that must have occurred in the nineteenth and late twentieth century.