• KOMUNHWA
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• no.2
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• pp.2-10
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• 1963

• KOMUNHWA
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• no.4
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• pp.1-16
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• 1966

• KOMUNHWA
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• no.5_6
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• pp.81-84
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• 1969

• KOMUNHWA
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• no.16
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• pp.26-30
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• 1978

• Journal for History of Mathematics
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• v.18 no.3
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• pp.39-54
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• 2005

In Chinese Mathematics, Jia Xian(要憲) introduced Zeng cheng kai fang fa(增乘開方法) to get approximations of solutions of Polynomial equations which is a generalization of square roots and cube roots in Jiu zhang suan shu. The synthetic divisions in Zeng cheng kai fang fa give ise to two concepts of Fan il(飜積) and Yi il(益積) which were extensively used in Chosun Dynasty Mathematics. We first study their history in China and Chosun Dynasty and then investigate the historical fact that Chosun mathematicians Nam Byung Gil(南秉吉) and Lee Sang Hyuk(李尙爀) obtained the sufficient conditions for Fan il and Yi il for quadratic equations and proved them in the middle of 19th century.

• Cross-Cultural Studies
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• v.19
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• pp.79-99
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• 2010

The purpose of this study is to compare the books exchange between china and Joseon dynasty. Books, ancient and modern are an essential part to publish, propagate, administer the books which is a matter of grave concern among nations. Also they are the most important information and the symbol of the government power. As a result the rulers had brought many necessary books from China and it is a national policy to govern in Joson dynasty. This study will discuss the introduction of chinese books from the Annals of the Joson Dynasty, especially from the first king of the Joson Dynasty, Yi Seong-gye to the ninth king. At that times, Joson Dynasty had attempted to reign various policies. So many books related with the absolute authority of China. In accordance with the book classification method in ancient china, they are have been categorized. Furthermore, it should have been a important clue to check the influence by being brought many books from China.

• The Journal of Korean Medical History
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• v.30 no.1
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• pp.23-31
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• 2017

Euibangyoochui (醫方類聚), the largest medical book in Korea, has medical and historical significance in that it had classified almost all East Asian medical accomplishments before Joseon Dynasty (1392-1910). Focusing on these values, this research investigates Yi'an (醫案), an East Asian tradition of describing clinical encounters and the therapies employed, in Euibangyoochui. By this investigation, this study expected to not only establish how the genre of Yi'an is employed for what purpose in Euibangyoochui, but also to shed a light on the appearance of Yi'an before Joseon Dynasty. At first, this study extracted Yi'an from Euibangyoochui (醫方類聚), as Yi'an does not have a standardized format. In total, the number of extracted Yi'ans is 1,025 with handwork results. Extracted Yi'ans are analyzed statically, in order to find dispersion of Yi'ans for each chapter and its references. Overall, there are 73 chapters of Euibangyoochui, which has a total of 93 chapters, containing Yi'an, while the chapter on gynecology contains the highest number of Yi'ans, 86. Judged from these result, the genre of Yi'an was used diversely and frequently, indicating various messages in Euibangyoochui. To categorize the usage and purpose of writing of Yi'ans in Euibangyoochui, this study considers some examples of Yi'ans and concludes that 3 types of Yi'ans are employed in Euibangyoochui in order to deliver the adequate medical message. One is result-centered Yi'an delivering a broader medical lesson, such as a taboo in treatment or a doctrine in medicine. The second is the concise-styled Yi'an presenting a short effective medical method. The third is multiple-information Yi'an that describes complex information of patients and medical theories, transmitting diverse lessons. Yi'ans in Euibangyoochui refer to 58 medical books. Books written by JangJaHwa (張子和; 1156-1228) are the most cited books, offering almost a quarter of total amount of Yi'ans in Euibangyoochui. This study is meaningful in that it provides basic information, such as numbers, applications, purpose of writing and references of Yi'an in Euibangyoochui. Moreover considering the historic values of Euibangyoochui, this information reflects, on the other hands, overall figures of Yi'an written before publication of Euibangyoochui.

• Journal of the Korean Society of Costume
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• v.10
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• pp.5-16
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• 1986

This dissertation is a study of the costume of the Yi dynasty by means of an investigation of the Ka-rae-do-gam-Eui-gue Do(嘉禮都監儀軌圖: a collection of paintings of the royal wedding ceremonies and processions issued by the royal court) and the Jung-ri Eui-gue Do(整理儀軌圖: a collection of a series of paintings showing the whole process of the royal courtesies and ceremonies on the occasion of the king's visit to Hyun-yoong Won in Hwa-sung in 1975年). The Yi dynasty period is roughly divided into two parts. The first period extends from 1392, in which the reign of the dynasty started, to 1600, when Imjin Waeran(the Japanese Invasion of Korea) ended; the second period lasts from 1600 to the last day of the dynasty in 1910. Of the "Eui-gue Do"(儀軌圖: paintings of the royal ceremonies) which were made in the first period of the dynasty, there is no extant example, the reference to which is found only in records. However, the examples of the "Eui-gue Do" belonging to the second period remain abundant in number, together with the detailed accounts about them. The followings are the conclusions deduced from this study, which tries to illuminate the pictorial characteristics as well as the traits of costume manifested in the above-mentioned two groups of paintings. Most of the costume seen in the Ka-rae-do-gam Eui-gue and the Jung-ri Eui-gue were not clad in accordance with the wearer's individual desire or taste, but in strict conformity with the norm and sense of order in the society based on the Cosfucian political and ethical principles.

• Journal of the Korean Society of Clothing and Textiles
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• v.1 no.1
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• pp.15-23
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• 1977

This article is to study Dopo, man's traditional robe, which was worn by courtiers and scholars in Yi dynasty (AD 1392-1910). This article deals with its history and transition according to relative documents available, and presents its construction method with reference to relics. It is recorded that Dopo was first worn about the middle of the time of Yi dynasty. Dopo, however, seems to have its origin in the robe of Koguryo dynasty (BC 37-AD 668). Dopo was an ordinary robe to court officials, whereas Confucian scholars wore it as an official uniform or a ritual robe. ft was a long over-coat with V-neck line, and, round and wide sleeves. Dopo was so long that its edge reached wearer's ankels. One of the widest sleeves of relics was 58cm in size. Another unique characteristics Dopo had, were that its back cloth splited in two on center line, which was fully covered and added with-another cloth called 'Jeonsam'. Accordingly, a cloth-30cm in width and 30 yards in length-was needed to make Dopo. Since the reform of 1894 it was prohibited to wear, and then was replaced with Durumagi, a strait collar and narrow-sleeved robe.

• Journal of the Korean Home Economics Association
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• v.17 no.2
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• pp.49-56
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• 1979

In Korean housing designs reflect uniqueness as a result of the influence of regional and atmospheric factors. In this regard, the early use of the hot floor (ondol) system is of special significance. This system is still in use today, not only for house-heating purposes in the homes of commoners, but also for cooking in the kitchen. The present study represents an investigation of the ondol structure since its earliest known usage. Methodology involves a documentary examination of the system. In point of time, this begins with the system's earliest usage and proceeds chronnologically down to the end of the Yi Dynasty. Research indicates that something very much like the ondol system appeared in the early tribal society of Mahan and its usage continued in the state of Koguryo (during the Three Kingdoms Period) in the homes of the poor. This unique system which had its origin in cold northern areas was utilized on a much broader basis during the Koryo Dynasty. Coming down to the Yi Dynasty it found acceptance and application in all parts of the peninsula. Variations in major component parts of the structure, such as the fuel hole, the flue, the draft , and the chimney, normally reflect regional dissimilarities. It is perhaps most significant that here-in contrast to other devices we have a system that serves concurrently for both heating and cooking purposes.