• East Asian mathematical journal
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• v.30 no.4
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• pp.439-449
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• 2014

In the history of mathematics education, different opinions as to how to view the phenomenon of mathematics education have been suggested in various ways. As those conflicting opinions have caused fundamental tensions in the phenomenon of mathematics education, they remain fundamental standpoints that have been continuously advocated until now - not limited in a certain period. It can be argued that this situation was caused by partial or fragmentary understanding of the phenomenon of mathematics education. If we are pursuing not a partial knowledge but a complete understanding of mathematics education, how should it be formed to comprehensively study the entire phenomenon of mathematics education? To answer this question, Complex structure in phenomenon of Mathematics Education can be proposed. It is an explanation for the opposing opinions existing in the phenomenon of mathematics education. The purpose of this paper is to understand the phenomenon of mathematics education as a whole.

• East Asian mathematical journal
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• v.37 no.4
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• pp.427-441
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• 2021

Ju-Seo-Gwan-Gyeon is a mathematical book of Chosun dynasty by Jo Tae Gu. This study is to analyze his understanding for the 'Gujang' in the 'Gujang-Mundab'. From this study, we were able to see the contents of 'Gujang-Mundab' that has been unknown in detail so far. In this study, the following facts are found. Most parts of 'Gujang' in 'Gujang-Mundab' was explained the same as Gu-Jang-San-Sul. This indicates that Ju-Seo-Gwan-Gyeon was influenced by Gu-Jang-San-Sul. However, Ju-Seo-Gwan-Gyeon also contains what he wrote with his own understanding. We expect that the results provide basic information for mathematics history in Korea.

• SUVANNABHUMI
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• v.11 no.1
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• pp.71-100
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• 2019

The region between mainland China on the east and the Indian sub-continent on the west is referred to as Southeast Asia since the conclusion of the Pacific War (1941-1945). As a region, Southeast Asia appears as a hodgepodge of disparity and diversity, but a closer scrutiny reveals numerous common attributes and characteristics. This study attempts to identify and examine the cohesive and shared characteristics across the Southeast Asian region from a historical and sociocultural perspective. The intention is to differentiate an identity borne of the underlying commonalities of shared characteristics whether physical, experiential, emotive, and/or in terms of heritage. Subsequently, Southeast Asia has more grounds to claim itself as a distinct region, and an "area of study," besides the political expediency of ASEAN.

• Journal of Engineering Education Research
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• v.22 no.6
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• pp.51-63
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• 2019

This study aims to present concept of "gong" which was shared by traditional East Asian societies (Korea, China and Japan) and to identify how it has been developed through their respective process of modernization and industrialization. Despite the territorial proximity of the three countries, their industrial and technological development followed different patterns, and the notion of engineering from the Occident was also accepted and reconstructed with a certain difference in each country. Japan had developed its own concept of engineering as part of industrialization in Western style and in the context of establishment of an imperialist nation. What was important for Japan was how engineering could contribute to the national development of technology and industry, and to the development of Imperial Japan. For China, which attached importance to resistance to Western civilizations and to strengthening the competitiveness for and which needed to resolve domestic political conflicts, engineering constituted more than a simple issue on technological and industrial dimension; it was also associated with obtaining ethical and political legitimacy which would allow the nation to gain support from the working and peasant classes. Though belated, Korean attempted to build an independent modern state, yet experienced a considerable nuisance from the invasion of Japan and the protracted colonial period. Engineering of Korea had to take a long time before emerging from backwardness especially because of Japanese policies which tended to restrict technological development and avoid fostering qualified engineers in the colony. Therefore, engineering in Korea started to contribute to the nation's development and the improvement of technological competitiveness only after it was combined with modern higher education after liberation, under the name of engineering science (工學, gong-hak). This study argues that our recognition of what engineering was for and who engineers were in East Asia will allow us to evaluate current status of engineering education and provide us with significant insight which will be useful when we imagine the future society. Identity of engineering in Korea, China, and Japan has been developed along with historical contexts such as clash of civilizations, wars, recovery of sovereignty and obtaining of national competitiveness; now, what will be combined with engineering in the next generation? This question will lead and motivate engineering students to think and imagine about what future engineering should be and how they respond to it.

• Journal of Life Science
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• v.24 no.6
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• pp.626-632
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• 2014

The genetic structure and phylogenetic relationship were investigated in Korean red spotted grouper populations using the nucleotide sequence polymorphisms of the mitochondrial DNA (mtDNA) cytochrome c oxidase subunit I (COI) gene. The COI gene was sequenced showed 99.1-99.8% identity with the EF607565 sequence previously reported. A total of twenty haplotypes were found, and the Korean population showed nineteen haplotypes. Among those, Hap_03 and Hap_08 showed Jeju-do and China-specific COI sequences, respectively. However, Hap_07 had twelve COI sequences from South Korea and records from Hong Kong and Taiwan. Neighbor-joining (NJ) trees constructed from the phylogenetic analyses based on the polymorphisms of the COI haplotypes showed a monophyletic branching pattern within the genus Epinephelus. This indicated that the red spotted grouper populations had evolved from common maternal ancestors. In addition, the Hap_08, which had the COI sequence recorded only from China Sea, was found in the middle of the NJ tree nearby Hap_07 and showed a close relationship with Hap_07. This indicates that Chinese red spotted grouper is also maternally related to other populations in East Asia. Consequently, East Asian red spotted grouper populations are maternally related, as well as sharing the same evolutionary history, and are still affected by the East Asian ocean current (Kuroshio). These findings help to explain the genetic structure and phylogenetic relationship of red spotted grouper and also contribute to research on artificial breeding and industrialization.

• Korean Journal of Plant Taxonomy
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• v.48 no.4
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• pp.249-259
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• 2018

$Iso{\ddot{e}}tes$ L. ($Iso{\ddot{e}}taceae$) is a cosmopolitan genus of heterosporous lycopods containing ca. 200 species being found in lakes, streams, and wetlands of terrestrial habitats. Despite its ancient origin, worldwide distribution, and adaptation to diverse environment, species in $Iso{\ddot{e}}tes$ show remarkable morphological simplicity and convergence. Allopolyploidy appears to be a significant speciation process in the genus. These characteristics have made it difficult to assess the phylogenetic relationships and biogeographic history of $Iso{\ddot{e}}tes$ species. In recent years, these difficulties have somewhat been reduced by employing multiple molecular markers. Here, we reconstruct the phylogenetic relationships in East Asian $Iso{\ddot{e}}tes$ species. We also provide their divergence time and biogeographic origin using a fossil calibrated chronogram. East Asian $Iso{\ddot{e}}tes$ species are divided into two clades: I. asiatica and the remaining species. $Iso{\ddot{e}}tes$ asiatica from Hokkaido forms a clade with northeastern Russian and western North American $Iso{\ddot{e}}tes$ species. In clade I, western North America is the source area for the dispersal of $Iso{\ddot{e}}tes$ to Hokkaido and northeastern Russia via the Bering land bridge during the late Miocene. The remaining $Iso{\ddot{e}}tes$ species (I. sinensis, I. yunguiensis, I. hypsophila, I. orientalis, I. japonica, I. coreana, I. taiwanensis, I. jejuensis, I. hallasanensis) from East Asia form a sister group to Papua New Guinean and Australian species. The biogeographic reconstruction suggests an Australian origin for the East Asian species that arose through long-distance dispersal during the late Oligocene.

• Journal of architectural history
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• v.14 no.3 s.43
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• pp.39-52
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• 2005

This study relates to the architectural planning principle of Gyeonghoeru pavilion, one of the major buildings in Gyeongbokgung palace. The study is concentrated on The Book of Gyeonghoeru Pavilion written by Jeong Haksun in 1865 during the reconstruction of Gyeonghoeru pavilion. The architectural planning principle of Gyeonghoeru pavilion disclosed in The Book of Gyeonghoeru Pavilion appears to be 'the method of expanding with six by six system'. 'The method of expanding with six by six system' means a way of continuously extending the number related to 6 by addition, subtraction, multiplication and division, and reflecting to architecture, having number 6 as the basic number. Number 6 means a large amount of water in East Asian philosophy, Applying 'the method of expanding with six by six system' to the architecture of Gyeonghoeru includes an intention to prevent fire in a way of a type of incantation because Korean traditional wooden buildings are we to fire. Since Gyeonghoeru is surrounded by a pond and was constructed based on the number 6 having a strength of water, it was believed that it could be safe from fire. This study compares the contents disclosed in The Book of Gyeonghoeru Pavilion with the construction of Gyeonghoeru to find out how the number 6 was applied to the overall construction of Gyeonghoeru. From the fact that the total number of km of Gyeonghoeru is 36 ($6{\times}6$), the number of pillars is 42 ($6{\times}7$), and the number of windows and doors is multiples of 6, it has been found out that the number 6 is deeply related to the overall construction of Gyeonghoeru. In addition to the fact that the construction of Gyeonghoeru can be explained by 'the method of expanding with six by six system', The Book of Gyeonghoeru Pavilion also discloses parts where Diagram of Hotu, Later Heaven Arrangement and Arrangement of 64 Hexagrams are applied. Therefrom, it has been found out that Gyeonghoeru pavilion was constructed by applying the principles of East Asian philosophy based on The Book of Changes.

• Cross-Cultural Studies
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• v.43
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• pp.355-376
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• 2016

This study looks into the relationship between Chinese philosophy, with a focus on Confucianism and Taoism, and music. Kong zi's Confucius supported, 'Enjoyment without being licentious and grief without being hurtfully excessive', and 'hatred of the music of Zheng'. These ideas do not emphasize the function of music as an expression of emotions, feelings, or desires, and are instead conclusions based on Confucian ideals such as harmony between classes and the spread of benevolent government. Music must coincide with Justice. The hatred of the music of Zheng was a conclusion founded on the idea of a place for Justice in music. Zhuangzi is the source of the spirit of Chinese art; specifically, Zhuangzi's idea of music in relation to its influence on East Asian history of art is extremely influential. In fact, the concept of yuelun is considered the most original and important concept in the history of the East Asian philosophy of art. The most distinctive features of Zhuangzi's theory of music can be summarized as follows. He attempts to liberate music from the restrictions of form and to let music express authentic human feelings and emotions. He also argues that music should not be subjected to politics, as he thinks that the creative mind of an artist can exist only when music is freed from political influence. Confucianism takes a humanistic perspective, while Taoism takes a more naturalistic one. In sum, Confucianism gives weight to the logical and ethical aspects of music, while Taoism emphasizes the intuitional and naturalistic ones.

• The Journal of Korean Philosophical History
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• no.31
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• pp.375-406
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• 2011

The paper investigates the ideal image and the ideological tendency of the traditional intellectuals in the East Asian Societies by analyzing the religious thoughts of Donghak, Tenrikyo and the Society of God Worshippers, which were the representative religious bodies in Korea, Japan and China. In particular, this paper focuses on the founders' thoughts of the religious organizations, such as Choi Jewoo(崔濟愚, 1824-1864) of Donghak, Nakayama Miki(中山みき, 1798-1887) of Tenrikyo and Hong xiuquan(洪秀全, 1814-1864) of the Society of God Worshippers. The results obtained from the study are as follows:Choi Jewoo's father was a teacher in a rural village, and so Choi Jewoo also wanted to be a teacher. Afterward when he had religious experiences, in the trance state, he became a teacher. Consequently, his religious thoughts were based on the ideal teacher's stance. Nakayama Miki respected her father, who was a low-ranking warrior or bushi(武士). And when she experienced strange experiences, she became a high-ranking warrior or shogun(將軍). On this account, many of her religious thoughts were based on the ideal bushi's position. Hong xiuquan's father was a low-ranking local official, therefore Hong xiuquan wanted to be a high-ranking official since childhood. Later, he took the civil service examinations only to failed. And so when he had religious experiences, he became an official appointed by God. And his religious thoughts, in many cases, depended on the ideal official's stance.

• Journal of the Korean association of regional geographers
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• v.22 no.4
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• pp.745-760
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• 2016

The name of a place represents the social and political power relations as well as showing a certain physical space. In particular, the East Sea is not only a representative name of areas represent our country, but also the name of place being in competition with the Sea of Japan internationally. Korea is committed in many ways to spread the name of East Sea in the international community, and gradually expand its name power. The purpose of this study was to investigate the names used in the newspapers and broadcasting in Francophone countries except France by analyzing the newspaper articles and broadcasting contents, and to illuminate how the names of the East Sea produced in France, and the discussion about the names were diffused in Francophone countries and what kind of influence they had on those countries. This study selected Algeria in North Africa, Belgium and Luxembourg in West Europe, and Quebec in Canada for the research areas. As a result, while Algeria in North Africa and Luxembourg are showing inhospitality to the name East Sea, Belgium and Quebec are taking a flexible attitude toward this name. In general, most Francophone countries are provided with press releases from AFP in France. Even in same article provided by AFP, The result shows that some media stick to use the name Sea of Japan solely, and others demonstrate a will to use both name East Sea and Sea of Japan simultaneously. This study was able to show that the diffusion and spread of the place name was significantly influenced by social, political interests and powers, the mess geopolitics in pop cultural materials.