• 한국수학사학회지
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• 제27권3호
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• pp.155-164
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• 2014

Tianyuanshu and Zengcheng Kaifangfa introduced in the Song-Yuan dynasties and their contribution to the theory of equations are one of the most important achievements in the history of Chinese mathematics. Furthermore, they became the most fundamental subject in the history of East Asian mathematics as well. The operations, or the mathematical structure of polynomials have been overlooked by traditional mathematics books. Investigation of GuIlJib (九一集) of Joseon mathematician Hong JeongHa reveals that Hong's approach to polynomials is highly structural. For the expansion of $\prod_{k=11}^{n}(x+a_k)$, Hong invented a new method which we name Hong JeongHa's synthetic expansion. Using this, he reveals that the processes in Zhengcheng Kaifangfa is not synthetic division but synthetic expansion.

• 한국의사학회지
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• 제32권2호
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• pp.79-90
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• 2019

In many periods of Korean history, state-sponsored medical books played a crucial role in terms of distributing medical knowledge as well as systemizing medical information. This study uses comparative analysis to examine the tables on contents of state-sponsored medical publications in Korea. These tables of contents reveal the placement and categorization of medical knowledge, which implicates the ways in which diseases were classified. Historically, Korean medicine has been influenced by Chinese medicine, and at the same time, it has made steady efforts to localize Chinese medicine. This paper argues that Korean medicine adopted the Chinese styles of categorizing medical knowledge in the middle of 15th century for the first time and shows the tendency to Koreanize medical knowledge through the early 17th century. In the 18th century the Complete Records of Medicine (醫部全錄) shows the trace of referring the style of Korean medical book, the Treasured Mirror of Eastern Medicine (東醫寶鑑) in terms of categorizing medical knowledge.

• 건축역사연구
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• 제32권3호
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• pp.63-76
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• 2023

Homogot Lighthouse is located in Pohang of the easternmost of Korean Peninsula. Homogot has become first known as Cape Clonard in the West through the navigation log by La Perouse, a Frenchman who embarked on a global exploration in 1785. Homogot Lighthouse represents an outstanding accomplishment of modernization that numerous civilized countries scrambled to attain in the early 20^th century. Located where the geographical risk of earthquakes is high, the structure was nonetheless built to be 26.4m high with brick masonry. Structurally safe and aesthetically graceful, it demonstrates neoclassical ideas superbly in terms of style as well. Although the history of Asian lighthouses is shorter than that of European ones. Homogot Lighthouse, which demonstrates the history of a modern lighthouse along with those in Japan and China, is differentiated by the following characteristics. ① The 'living lighthouse heritage' is linked to one of the largest lighthouse museum in the world. ② Where you can see the earliest sunrise at the easternmost of the Eurasian Continent. ③ The completion of a modern-style lighthouse constructed at the easternmost of the Far East after being initiated in Europe. ④ Differentiated historical, architectural, and aesthetic value. ⑤ The heart of the national marine park.

• East Asian mathematical journal
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• 제33권2호
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• pp.217-233
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• 2017

This study expects that Team Based Project Learning can act positive role to improve pre-service elementary teachers' teaching competence from previous studies. So designing and executing Team Based Project Learning program, I can provide some suggestions to the teaching method for teacher training education. In this study, Team Based Project Learning focuses on the use of history of mathematics in school mathematics. Also from organizing the team to evaluation, I conduct team activity systematically both inside and outside the classroom. The result of this study shows that pre-service elementary teachers' teaching competence has improved and I could identify the positive response about the value of using the history of mathematics and effect of Team Based Project Learning in mathematics learning.

• 한국의사학회지
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• 제22권1호
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• pp.25-30
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• 2009

Shanghanlun is a medical text published by the Jiaozhengyishuju in 1065 A.D. during the Northern Song dynasty. The first edition featured larger characters but in 1088, a version with smaller characters was published with reduced price. This study compared various versions of Shanghanlun to clarify its system. Especially the alteration in the Chinese version by Jhao Kai Mei was comparatively analysed by the shape of letters and specific marks. Also, information on the various publications in Japan is included in this study, which we believe will be the logical outline for comprehensive understanding on the propagation and progression of Shanghanlun in East Asian region.

• East Asian mathematical journal
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• 제30권4호
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• pp.475-491
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• 2014

We can easily see the 'cycloid slide' in the many mathematics and science museums. The educational materials, however, do not give us any mathematical principle. For this reason, we, in this thesis, first study the brachistochrone problem in the history of mathematics, and suggest a method of how to teach the principle using 'the dynamic geometry software GSP5' in order to help students understand the idea that the cycloid is the brachistochrone. Secondly, we examine the origin of the calculus of variations and apply it to prove the brachistochrone problem in order to build up the teachers' background knowledge. This allows us to increase the worth of history of mathematics and recognize how useful the learning is which uses technological tools or materials, and we can expect that the learning which makes use of cycloid slide will be meaningful.

• 보존과학회지
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• 제35권1호
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• pp.1-10
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• 2019

This study provides a comprehensive evaluation of general characteristics of sized silk fabrics for the painting purpose. Two particular types of silk fabrics used for painting background were compared: a recreation of historical material and a mass produced material of present day. The sizing process made the surface characteristics of the silk fabrics more suitable for painting. The dyeing properties of the fabrics were related to the surface area of the fabrics, and had no significant effect on their mechanical properties. The antibacterial activity of the tannin-based natural dyestuffs were maintained after the sizing. The performance assessment by the KES-FB system showed that the fabrics are more prone to deteriorate after the sizing because the glue layer receives the most of the physical stresses.

• Animal Systematics, Evolution and Diversity
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• 제36권4호
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• pp.347-353
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• 2020

Although sea slaters Ligia have a significant role in rocky shore habitats, their taxonomic entities have not been clearly understood. In this study, we investigated whether genetic variation inferred from a nuclear genetic marker, namely amplified fragment length polymorphism (AFLP), would conform to that of a mitochondrial DNA marker. Using both the mitochondrial DNA marker and the AFLP marker amplified by the six selective primer sets, we analyzed 95 Ligia individuals from eight locations from East Asia. The direct sequencing of mitochondrial 16S rRNA gene revealed three distinct genetic lineages, with 9.8-11.7 Kimura 2-parameter genetic distance. However, the results of AFLP genotyping analysis with 691 loci did not support those of mitochondrial DNA, and revealed an unexpectedly high proportion of shared polymorphisms among lineages. The inconsistency between the two different genetic markers may be explained by difference in DNA evolutionary history, for example inheritance patterns, effective population size, and mutation rate. The other factor is a possible genomic island of speciation, in that most of the genomic parts are shared among lineages, and only a few genomic regions have diverged.

• 한국의사학회지
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• 제31권1호
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• pp.89-103
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• 2018

Uirimchalyo (醫林撮要), one of the most important books in the history of Korean Medicine (KM), has not been researched within the framework provided by Yi'an (醫案), an East Asian tradition of describing clinical encounters with the therapies employed. In modern times, this practice of Yi'an might be similar to the outline of a singular "case study". The authors designed the study to analyze the basic information of Yi'an within the Uirimchalyo and to contribute to the foundations of employing Yi'an in Korean Medicine. A standard was established, and the 123 Yi'ans were extracted, most of which were taken from the chapter, Historic Doctors (歷代醫學姓氏). Using this information and in comparison with other medical books such as Euibangyoochui (醫方類聚), the authors learned that the Yi'ans from the Jinyuansidajia (金元四大家), including those of four eminent clinicians in Jin (金) and Yuan (元) Dynasty, are excluded from Uirimchalyo. The authors identified that Yi'ans from other medical books, are cited in the Uirimchalyo but with different format, not with the traditionally understood form of Yi'an. This study of the Uirimchalyo Yi'an resulted in three important understandings of Yi'an. First, the mere number of Uirimchalyo Yi'an is meaningful in that it raised the genre of Yi'an to the a level not previously recognized. Second, in the history of Korean Medicine, Yi'an is first systematized in the Uirimchalyo at the chapter of Historic Doctors. Third, Uirimchalyo raised the concept of usefulness of Yi'an, to the practice of Korean Medicine.

• 문화기술의 융합
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• 제8권6호
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• pp.269-274
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• 2022

오늘날 모든 국가는 체육강국이라는 전략적 목표를 제기하면서 스포츠는 국가 발전을 위해 점점 중요해지고 있다. 그중 동아시아의 무술 중 중국을 주무대로 활동하고 있는 무술은 그 역사가 길고, 의미가 깊으며 무술의 국제화 추진 역시 중요시되고 있다. 본 연구에서는 동아시아의 무술 국제화 추진 과정에서 직면한 주요 문제점들을 심층적으로 분석하였다. 현재 무술의 이론체계가 일관되지 않고 미흡하며, 지역마다 문화적 배경에 큰 차이가 존재하며 국제화 보급 인재가 부족하며, 혁신적 추진방식이 아직 성숙하지 않다. 각 무술의 국제화 보급에서 직면한 주요 문제점을 기반으로 국제화 추진 전략의 분석을 진행 하는 동시에 무술 국제화 이론 체계 구축과 무술문화의 다양성에 대한 수용, 국제화 인재 공급 메커니즘을 보완하여, 과학적 혁신과 발맞춘 무술 국제화 추진 방식을 제안하고자 한다. 세계적 무대에서 중국 무술의 향후 계승과 발전, 그리고 중국무술의 가치에 대한 국제화 추진은 중요한 이론적 가치와 실천적 의의가 있다.