• Journal of architectural history
• /
• v.28 no.6
• /
• pp.43-54
• /
• 2019

The grade of East Asian architecture is generally classified by the size, the shape of the roof, and the type of bracket set. The craftsmanship of columns, beam, purlin, stylobate, column base stone and paintwork is also a contributing factor for such classifications. These classifications can be found not only in historical documents such as 「Oksajo(屋舍條)」 of 『Samguksagi(三國史記)』 but also in 「house details regulations of residential architecture(家舍規制)」 of Joseon Dynasty. However, there are differences in detailed designs among the same grade of architecture regardless of the classification. In this research, the Palace, the Royal Residence(宮家), and the Jaesil(齋室) are considered as the Palatial Buildings and Royal Residences. And the advanced architectural o details which appear only in the Royal Architectures are defined as the 'The Architectural Crafts as a Code of Manners'. The Architectural Crafts as a Code of Manners is detailed design, which can be seen as fabrication of materials and supplementary factors. The Architectural Crafts as a Code of Manners used in the Palatial Buildings and Royal Residences reveal the types and their historical changes. This research will present a basis for the repair and restoration of cultural heritages to be carried out in the future, and also prevent them from further damages, thus help to preserve the cultural heritages.

• Journal of architectural history
• /
• v.20 no.3
• /
• pp.23-38
• /
• 2011

The Axes and Adzes are the oldest tools since the beginning of human history which is used to cut the tree and make part of architecture such as boards, square timber etc. Nowadays, these old woodworking tools especially "Jagui(자귀)" (adze) has been almost disappeared at the working site of residential and cultural properties. It is necessary to study Korean traditional woodworking tools to keep Korean traditional skill and technology. It has been reviewed the change of shape of "Jagui(자귀)" (adze) from before Samhan (삼한) period to Joseon Dynasty through excavated relics and paintings and summarize as follows: Based on excavation relics of Dahori, both plate type blade and pocket type blade are used for "Tokki(도끼)" (axe) and "Jagui(자귀)" (adze). The excavated "Jagui(자귀)" (adze) from Jeongbaikri 356 tomb, near Pyongyang is prototype of "Jagui(자귀)" (adze) used nowdays which has almost same shape as well as the insert method of blade and handle. The auxiliary handle is inserted to blade and the main handle is inserted to the auxiliary handle which is different from the method of Chinese and Japanese "Jagui(자귀)" (adze). The length of handle of "Jagui(자귀)" (adze) until late Joseon Dynasty is short by which we assume it is used for a sitting position as hand held Jagui and from that time long handle has been introduced for a standing position which is called "Sunjagui(선자귀)". "Jagui(자귀)" (adze) has been used since the beginning of human history but it is almost disappeared at the most of woodworking site which is the crisis of Korean traditional architecture and we have to do something to keep it.

• Journal of Engineering Education Research
• /
• v.5 no.1
• /
• pp.77-84
• /
• 2002

The 18th century Joseon(朝鮮) science philosopher Hong Dae-Yong(洪大容, 1731-83) tried to create his own scientific system, while partially keeping the Eastern view of nature and accepting Western science and technology. Most of all, he confirmed that Western science and technology was based on mathematical principles and accurate observation and wrote a math book, [Juhaesuyong(籌解需用)]. Therefore, we have good reason to call him a mathematician. He produced so many achievements that he can be considered a natural scientist in the late Joseon era; he accepted the Eastern view of nature critically and sometimes refused it. He also suggested new and various scientific thoughts, including an infinite universe theory, on the basis of Western scientific thought. Hong Dae-Yong emphasized the importance of practice. He understood the principle of the Western Honcheonui(渾天儀) and manufactured an alarm clock with a craftsman's help. He was an excellent engineer and he set a personal observatory. Considering the level of scientific technology at that time, it is reasonable to regard Hong Dae-Yong as a 'scientific technologist in the 18th century Joseonera', well equipped as a mathematician, a natural scientist, and an engineer. In conclusion, it is with 'mathematical thinking, creative conception, and practical activities' that Hong Dae-Yong maintained throughout his life that we can set a guide to produce excellent Korean scientific technologists and engineers in the 21st century.

• Journal of Korean Medical classics
• /
• v.28 no.4
• /
• pp.121-137
• /
• 2015

Objectives : To investigate the progress, characteristics, and reasons of CV12 moxibustion that King Sukjong of Joseon Dynasty had experienced 31 years since 1684. Methods : This study mainly extracted the records and related records about CV12 moxibustion of King Sukjong and relevant records from Seungjeongwon Ilgi, and analyzed them. Aside from that, medical books wrote at that time and relevant records were additionally investigated. Results : King Sukjong cauterized CV12 or other CV12 related acupoints with moxa 21 years out of his 31 years from 1684 to 1714. The cautery period was usually between late January and mid February. He had 100 pieces of moxa for cautery. On the last day of his moxibustion, he cauterized ST36 with moxa. The moxibustion process consisted of the following steps: suggestion or requirement of moxibustion, decision of date and time, and moxa cautery. In 1684, the reason why King Sukjong cauterized CV12 with moxa was to treat his joint pain and nauseous symptoms. The effect can be found in Donguibogam, many other Korean medical books, and other general books at that time. In 1685, he began to cauterize CV12 with moxa to prevent diseases. Since then, most moxa cautery on CV12 had been performed in the same context. Conclusions : For 21 years, King Sukjong repeatedly cauterized CV12 with moxa. The moxa therapy was conducted to prevent diseases mostly. And King Sukjong had a lot of interest in the therapy. For the reasons, the therapy had repeatedly been performed so long.

• The Journal of the Petrological Society of Korea
• /
• v.27 no.1
• /
• pp.67-72
• /
• 2018

The K-Ar ages of a sericite quartz schist in the lower Jangsan Formation along the Okdong fault zone reported by Yun (1983) have attracted attention again because of their potential to constrain the depositional timing of the Jangsan Formation. The oldest age of $562{\pm}2Ma$ among three reported K-Ar ages in the schist led to the claim that the depositional period of the lowermost Jangsan Formation in the Joseon Supergroup is late Neoproterozoic. Its depositional age is important for understanding the tectonic evolution of the Korean Peninsula including the formation and evolution histories of its sedimentary basins. Thus, the reliability and geological meaning of three K-Ar ages in the original paper (Yun, 1983) were revisited in the review. Quartz grains in the analyzed sample contain a considerable amount of excess Ar, and therefore it is inappropriate to use the ages as a basis for a depositional age constraint of the Jangsan Formation. The timing of mylonitization in the schist is recalculated as ~170 Ma.

• Journal of Conservation Science
• /
• v.32 no.4
• /
• pp.571-578
• /
• 2016

This study analyzed the pigments used in two portraits of Sim Hui-su using scanning electron microscopy/energy dispersive spectroscopy(SEM/EDS), X-ray diffraction(XRD) analysis, and microscopic observation, and then compared the results to those from nondestructive analysis. It was estimated that cinnabar/vermilion and minium were used for the red pigment, azurite for the blue pigment, atacamite for the green pigment, and lead white for the white pigment. These results were compared to the pigments of six portraits with a similar format, full-length official-attire portraits from the $17-18^{th}$ century Joseon period. It was revealed that the composition of the pigments used in the portraits varied depending on the date of production. Iron oxide, another red pigment, was used in the $18^{th}$ century. As for the blue colorant, smalt was used in the late $18^{th}$ century, whereas it was absent until the early $18^{th}$ century.

• Journal of Astronomy and Space Sciences
• /
• v.32 no.1
• /
• pp.73-80
• /
• 2015

The Yang-gyeong-gyu-il-ui (兩景揆日儀) is a kind of elevation sundial using three wooden plates. Sang-hyeok Lee (李尙爀, 1810~?) and Byeong-cheol Nam (南秉哲, 1817~1863) gave descriptions of this sundial and explained how to use it in their Gyu-il-go (揆日考) and Ui-gi-jip-seol (儀器輯說), respectively. According to Gyu-il-go (揆日考) there are two horizontal plates and two vertical plates that have lines of season and time. Subseasonal (節候) lines are engraved between seasonal (節氣) lines, subdividing the interval into three equal lines of Cho-hu (初候, early subseason), Jung-hu (中候, mid subseason) and Mal-hu (末候, late subseason); there are 13 seasonal lines for a year, thus resulting in 37 subseasonal lines; also, there are 12 double-hour (時辰) lines for a day engraved on these plates. The only remaining artifact of Yang-gyeong-gyu-il-ui was made in 1849 (the $15^{th}$ year of Heon-jong) and is kept at the Korea University Museum. We have compared and analyzed Yang-gyeong-gyu-il-ui and similar western sundials. Also, we have reviewed the scientific aspect of this artifact and built a replica. Yang-gyeong-gyu-il-ui is a new model enhanced from the miniaturization development in the early Joseon Dynasty and can be applied to the southern part of the tropic line through a structure change.

• Conservation Science in Museum
• /
• v.18
• /
• pp.35-50
• /
• 2017

As part of the NMK's research project on wooden Buddha statues, four items which contained fabric among their bokjang objects(腹藏物) were investigated. Firstly, when classified by the method of weaving, two items made of ra (羅, a four-end complex gauze) silk and five of neung(綾, twill damask) silk from the Goryeo era were identified, and the satin fabrics showing characteristics of the Joseon period were classified as either dan(緞, satin damask) or sa(紗, simple gauze). In particular, the fabric of the bokjang objects enshrined within the gilt-bronze Avalokiteshvara Bodhisattva(Deoksu 801) feature both early and late Joseon characteristics, suggesting that two enshrinements were performed(once in the fifteenth century and another in the seventeenth). Secondly, the patterns on the fabrics included flowers, treasures, fruits, plants with animals, and landscapes with clouds. Thirdly, patches of fabric were found that are assumed to be related with all cardinal directions according to their arrangement, albeit in small quantities.

• Journal of Cadastre & Land InformatiX
• /
• v.49 no.1
• /
• pp.145-156
• /
• 2019

This study analyses land related problems and its features which stems from a concession established by the imperialist countries from the late Joseon Dynasty to the Japanese colonial period. In order to achieve the purpose of this study, literature review related to the installation of the treaty ports and a concession was conducted and a chronological analysis was applied. As a result of the study, the East China Sea and the Japan were opened by the Western powers in prior to the East Asia region, Korea was an open harbor port led by Japan, which had experience installing an open harbor. In this circumstance there was a system that allowed foreigners to freely reside and exercise exertion rights (exercise one's extraterritoriality), which was a disadvantage to Joseon. In addition, the Japanese-style land area unit "Pyeong" was used in Japan's highly influential prefecture, and later became the basis of the unit of land used in the 1910 land survey project.

• The Journal of Korean Philosophical History
• /
• no.50
• /
• pp.139-169
• /
• 2016

Nakron School of the ruling Noron Party in late Joseon Dynasty was at the helm of state with Neo-Confucian ideology and it came out of being obsessed with conventional 'spiritual' aspects and changed both political and academic atmosphere with interests in 'matters.' The power leading such a change was scholars in Seoksil Seowon (石室書院) which centered around Kim Won-Haeng (金元行). However, except for few progressive scholars-Bukhak scholars (北學論者), most of Nakron scholars secretly acknowledged the actuality of Qing Dynasty but they failed to get out of old Neo-Confucian traditions. It was difficult for them to accept Bukhak theory which jeopardized the existence of administration. They sought plans both to keep Neo-Confucian traditions and Sinocentrism in Joseon and to reach the cultural level of Qing Dynasty and in that process, they recognized restoration of the statecraft study (經世學) summarized on Seongridaejeon as an alternative. Hwang Yun-Seok is a representative Neo-Confucian scholar in such response of Nakron. He rediscovered value of the science of xiangshu in the Neo-Confucian category and highlighted importance of Seongridaejeon yet again.