• Journal for History of Mathematics
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• v.11 no.2
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• pp.8-16
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• 1998

We survey the development of cryptography from the ancient to the present as a mathematical point of view, and recent results of public key cryptosystems.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1997.10a
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• pp.223-233
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• 1997

The paper is a comparative study of the 9th -century Chinese, Korean and Japanese ships. It discusses the professional level of ship-bulding, the functions of ships, the routes of the ships, and the economic and cultural exchanges between China and Korea. In addition, it also introduces the history of the Xinluos living in China focuses on the distinction between Xinluo Guan, Xinluo Suo and Xinluo Fang, which is often confused in the Chinese, Korean and Japanese academic world.

• Journal for History of Mathematics
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• v.30 no.4
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• pp.221-232
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• 2017

In this paper, we discuss how ancient Egyptians find out the area of the circle based on $\ll$Ahmose Papyrus$\gg$. Vogel and Engels studied the quadrature of the circle, one of the basic concepts of ancient Egyptian mathematics. We look closely at the interpretation based on the approximate right triangle of Robins and Shute. As circumstantial evidence for Robbins and Shute's hypothesis, Egyptians prior to the 12th dynasty considered the perception of a right triangle as examples of 'simultaneous equation', 'unit of length', 'unit of slope', 'Egyptian triple', and 'right triangles transfer to Greece'. Finally, we present a method to utilize the squaring the circle by ancient Egyptians interpreted by Robbins and Shute as the dynamic symmetry of Hambidge.

• Journal of the Korean Society of Clothing and Textiles
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• v.8 no.2
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• pp.41-46
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• 1984

Ancient Korean and China litteratures show us that it has been long since people from humbler classes to king most commonly used bast fabrics as materials of their cloth. According to the record of these ancient litteratures, highly developed fine bast fabrics and those woven in figures were used as tribute between ancient Korea and China. In this study we will make a brief research of the history of bast fabric culture from ancient times to the Korea Dynasty in which the bast fabric culture flourished and reached the summit of prosperity. After having compared the bast fabric culture of ancient Korea with that of ancient China in which the bast fabric culture developed very much and bast fabrics were used more commonly as materials of cloth than any other fabrics, we could come to conclusions as follows. 1. Names were given to bast fabrics according to the kinds of bast fibers, the degree of fineness and the containing of figures: Ma-po, Jeo, Jeo-po, Bag-jeo-po, Moon-jeo-po, Po and Se-po. The number of 'Seung' which indicated the degree of fineness was attached to the top of each name to show how fine they are. 2. While the bast fabric of 30 Seung is known to be the most fine one of the ancient China, in ancient Korea fine bast fabric of higher than 30 Seung was woven. This fact proves that the technique of weaving bast fabrics of the ancient Korea was more highly developed than that of ancient China. 3. In ancient China the highest Seung number of the ordinary clothes which were put on after putting off livery of grief was regulated to be 15. But in ancient Korea, Sil-la, it was regulated to be 28. Judging from this fact, we may say that the consumption level of the ancient Korean people in cloth was higher than that of the ancient China people. 4. The reason why in ancient Korea the technique of weaving bast fabrics was so highly developed is suppoed to be that the ancient Korean people preferred elegant, refine and simple taste in cloth. 5. The excellent bast fabric culture of the ancient Korea flowed into ancient Japan. It proves that Korea played an important part in the history of textile development of the world.

• The Journal of Korean Medical History
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• v.17 no.2
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• pp.27-43
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• 2004

"Uirimchwaryo(醫林撮要)" is a medical book that takes a model of written in the middle of Chosun dynasty. In the contents side, it seems to unite a korea medicine with the Geum-Won Dynasty(金元時代) in ancient china. we can think much of the value that it combines theory with experience, choosing the merits of "Uibangyuchwi(醫方類聚)" which were the masterpieces of the first half of Chosun Dynasty and it increased a practical use to choose easily prescription in the clinic. This book which was proofread and published by imperial physician Yang Yaesoo(楊禮壽, ? ~ 1597) is not exist. In this condition, existing print type is added by scholars only after "Donguibogam(東醫寶鑑)" was compiled. When the academic conference was held in last year, I introduced a new founded book in japan's possession that printed in Chosun dynasty. Moreover I survey more documents and investigate a few old printed books that are handed down to Chosun and Japan. In addition, I will present that had done interchanges between the ancient nations in par-eastern asia, especially to have done by diplomatic mission. We can evaluate the value and effect of "Uirimchwaryo" in Chosun dynasty of medical history.

• Journal for History of Mathematics
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• v.25 no.1
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• pp.57-70
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• 2012

We will research the elementary formal logic and mathematical concept represented in Mojing, and focus on the ancient Chinese's mathematical principles implicit in Mojing. Moreover, the mathematical significance and values of Mojing are examined.

• The Journal of Korean Medical History
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• v.31 no.2
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• pp.27-40
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• 2018

Sauna, or hanjeung (汗蒸) is a physical sweating method that uses external heat to forcibly raise body temperature to treat cold damage disorders (傷寒) in traditional Korean medicine. This study focuses on the fact that the sauna was recorded as a healing and bathing method on the Vinaya Pitaka (律藏), and investigates the records of folk sauna therapy of Joseon Dynasty from the perspective of Buddhist medicine which played a significant role in ancient medicine history in Korea. Although the word 'hanjeung (汗蒸)' first appeared in "The Veritable Records of King Sejong (世宗實錄)" in the Korean literature, this study aims to confirm the possibility that the tradition of Buddhist sauna bathing has already existed since the Three Kingdoms period in Korea, based on the fact that sauna bathing was recorded in the Vinaya Pitaka and that the ancient Buddhist bathing culture was introduced in ancient Japan. In addition, the succession of the Buddhist sauna tradition by Goryeo will be traced back through the records of 1920s urban saunas in Gaesung (개성) which was the old capital of Goryeo and had a strong tendency to adhere to traditional Goryeo customs. Finally, the study tries to identify the elements of the Buddhist sauna bathing on the records of folk sauna therapy in the Joseon Dynasty. As a result, this study examines how the Buddhist sauna bathing culture in ancient Korea, which was led by medical monks, spread in the general public and influenced the folk sauna therapy in the Joseon Dynasty.

• Journal of architectural history
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• v.14 no.3 s.43
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• pp.119-128
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• 2005

In ancient times, architectural design was seen as a critical task in building technologies. Specifically, form, dimension and structural design are of significant. These aspects are associated with each other and to be emerged as a whole. Designing plan dimension was deemed to be the core of design technology due to its close relationship with module system. Thus, its evolution as well as development process typically represents and reflects the spirits and contents of design technologies in ancient China. In China, the materials regarding ancient architectural technology include Yingzaofashi(營造法式) of Song Dynasty and Gongchengzuofazeli(工程做法則例) of Qing Dynasty. They show many aspects concerning materials, structure, scale system and building. In Yingzaofashi, although the length of objects are decided by 'cai(材)' and 'fen(分)', there are no regulations on length, width and height of a building. However, in the construction of ancient buildings, the above mentioned basic scales are very important in both design and construction. The present paper attempts to discuss the significance, namely, the design principles of length, with and height of ancient chinese architecture.

• The Journal of Korean Medical History
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• v.36 no.1
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• pp.143-154
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• 2023

This paper is a study that considers how current scientific medicine could be supported by traditional medicine, and if the scope of this support is expected to gradually widen. This study begins by understanding the process by which Traditional Chinese Medicine (TCM) has developed interventions for COVID-19. We then examine what support is offered by the ancient Korean medical text "Uibang Yuchi". This paper insists that a key database is absolutely necessary to develop treatment techniques for new diseases. The key database should be considered not only from the point of view of knowledge but also from the point of view of intellectual property rights, and for this reason, the text of "Uibang Yuchi" is important. This paper shows the process of how a new treatment technique can be derived from the ancient book "Uibang Yuchi". We expect that the suggested model would play a role as a reference model in the process of pursuing similar strategies in the future.

• Journal for History of Mathematics
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• v.13 no.1
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• pp.89-98
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• 2000

This paper analyzes the philosophy of mathematics as the ancient Egypt. This article provides an overview of computer programing capacities by Mathematica. To give an idea of mathematical graphic's capacities, practical example will be computed.