• Journal for History of Mathematics
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• v.37 no.3
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• pp.59-75
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• 2024

This study aims to analyze Joseon mathematical knowledge and its application to real world. The mathematical knowledge refers to measuring the area of plane figures, known as square-shaped land(方田). Its application is land surveys(量田) conducted for taxation purposes. Specifically, this study analyzes the correlation between the related contents in representative mathematical books of the Joseon Dynasty, such as MuksaJipsanbub (17th century), Guiljib (18th century), and SanhakIbmun (18th century), and the shapes and areas of plane figures presented in GwangmuYangan (20th century). The analysis reveals both differences and similarities in the measured area between mathematical books and real world land surveys. While most results of the land survey align with the results obtained from mathematical methods, differences arise due to variations in real measurement of lengths and given conditions in the problems. Additionally, various aspects such as the focus on rectangles in land surveys, the proportionality and relativity of lengths, types of approximation, composed shapes, the purpose of problem solving, and reasoning of unspecified shapes or measures are discussed.

• Journal of architectural history
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• v.26 no.3
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• pp.7-18
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• 2017

This research focuses on the cadastre and cartographic tradition regarding the representation of Rome that had lasted until the middle of 18th Century. Since the early period of Roman Republic until the early 18th Century, map was considered as a effective medium to record the status of urban facts and also a manifestation of changing perception of reality. These facts allow to diagnose social and conventional changes that had occurred in the field of representation techniques and methodologies derived from diverse intention and objective in elaboration of each map. Cartography also has affinity to architectural drawing as many categories of individuals are involved, clients, researchers, craftsmen, publisher and collectors. Fundamental task of documenting the contemporary physical reality was given to the map, however, as architects had practiced through the drawings, cartographers also reconstruct in subjective way specific buildings and urban aspects according to various needs and demands. As such, philology and imagination play important role as two constitute extreme poles in the evolution of the cadastre. Through analysis of paradigmatic examples in the genealogy of cartography of Rome, it was possible to understand the changing episteme that testify the mentality and custom in the field of visual representation.

• The Research Journal of the Costume Culture
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• v.11 no.5
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• pp.657-670
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• 2003

It is quite common today for bride to wear white-colored wedding-dress in wedding ceremony. When does the color date back to? What does the “white” mean? Which other colors had been used for wedding dress and why? This research paper aims to answer those historical questions through literature review. It is found here that the “white” began to be generally accepted for a wedding dress color in the 18th century, and that the color became an official one since the marriage of Queen Victoria's (i.e. 1840). Prior to that, other colors were taken rather than the “white”. In ancient Greece and Roma, “Red” and “Yellow” were used to remove devils or to bring fortune. In medieval society, luxurious wedding dresses were popular and various colors were adopted in order to show up family power among leading classes. The “White” has meant purity of bride since the 18th century. However, two world wars in the 20th century happened to lead some brides in economic difficulty wear “black” colored wedding dress for a practical reason. After the world wars, some light colors such as white, beige, ivory are to be used in wedding dress.

• Journal of the Korea Fashion and Costume Design Association
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• v.22 no.4
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• pp.1-16
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• 2020

This study focused on front-blouse-type skirts from the 15th and 16th centuries and aimed to investigate their formative characteristics and wearing patterns. Previous studies, literature, records, paintings, and excavated clothing items were used as research materials. The researcher categorized front-blouse-type skirts into three types based on the construction method. The first has the front-center portion of the skirt folded up, the second has the center portion cut short, and the third has horizontal dart pleats on either side. An examination of 48 items from 18 excavation sites of front-blouse-type skirts showed that only the front-center portion folded up type appeared in the 15th century, and it was only in the 16th century that the other forms of skirts were worn. Finally, based on the analysis, the pattern of wearing front-blouse-type skirts and their changing factors was deduced. Front-blouse-type skirts were identified as ceremonial skirts that were popular in the 15th and 16th centuries among the types of long skirts available. The popularity and usage of this type of skirt began to spread gradually in the 15th century. In the 16th century, various types of front-blouse-type skirts were brought into vogue by the royal family and the external register. It can be inferred that the popularity of front-blouse-type skirts gradually declined in the 17th century as other types of long skirts, folding skirts, and Sran type skirts emerged.

• The Research Journal of the Costume Culture
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• v.11 no.4
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• pp.551-561
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• 2003

The regulations for costume were set to improve people's moral fiber and cultural standards. In the 17th and 18th century, the main aim of this regulation was to prohibit luxury. But being the turning point to a modem state, with breaking social status and development of commerce, industry, and the mind of imitation, regulation for luxury wasn't enforced, but rather it brought many revolutionary changes in costume. Restraining human impulse to express beauty was no longer subject to regulation. Therefore, people started to recognize the human figure with shorter Jegory(저고리) and strengthened ceremonial capacity by broadening po's(포) sleeves. The silk fabrics were the most popular fabric during this era, special patterns were added for decoration and also for blessings. Complementary colors were used for contrast on the collar (깃), cuffs (끝동), Gyotrnagi (곁마기), and sash (고름). This color composition gave a younger and more active look. And with red stripes on the sleeves, it emphasized the beauty of the color arrangements as well as providing protection from the devil.

• Journal of the Korean Society of Costume
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• v.62 no.6
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• pp.218-230
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• 2012

The 25 pieces of women's jogori worn by ChangRyung Jo's family(1721~1742) that are preserved in Yeoju Museum, Gyeounggi Province, Korea were examined in this study. The aim of this study is to analyze women's jogori that were excavated from the grave of Changryung Jo's family, and to characterize women's costumes around the middle $18^{th}$ Century. The size of the jogori was divided into two groups. The garment length of the first group ranged from 31cm to 34cm and the bigger size ranged from 36.5cm to 40cm. The number of jogori in the group with the smaller size was twenty-five pieces and five pieces for the group with the bigger size. Changryung Jo's jogori was composed of two pieces of padded jogori, four pieces of quilted jogori and nineteen pieces of double layer jogori. Even though the direction of the margin located on back seemed point toward the right hand side, the gorum, the string for the tie, and the Sup, the outer gore of the jogori located on the other side of the margin had no pattern of direction. The line of jogori from the armhole gets narrower toward the edge of sleeves which could be recognized as a typical pattern of the middle $18^{th}$ Century jugori. The bigger group of jogori seemed to be worn by people other than ChangRyung Jo's relatives and used to be a gifts to aid in funerals. Major characteristics of jogori is could be categorized into the Dangko Mokpan collar jogori and Samhaejang jogori. The results of this study helps set the relative dating for the women's jogori of middle $18^{th}$ Century where not much excavations have been made.

• Journal of the Korean Society of Costume
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• v.57 no.10
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• pp.99-111
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• 2007

This paper was built by following next steps. First, based on the records of the Tongshinsa, the official diplomatic mission Joseon dispatched to Japan, the actual conditions of wearing a Danryung, a official robe, in the 18th century were researched. Then the difference of wearing state between the missions - in 1719, 1748 and 1764- was found and the reason why was analyzed. In result two distinctions were found: 1) A black Danryung was worn in 1719 at the banquets and while receiving an official letter of reply, but a red Danryung, Gongbok or Sibok on the later trips. 2) In 1764 travel records there was some confusion of the names Gongbok and Sibok, which denote the same item of robes, according to the writer. The reason why those changes and confusion were caused is analyzed as follows: 1) After the Japanese Invasion(1592) and the Manchu Invasion of Joseon(1636), a black Danryung replaced the Gongbok for a while. But after the mid-18th century, when the Gongbok was revived, that was reappeared in the official ceremonies. 2) In the mid-18th century, both Gongbok and Sibok system had been revised. But because both color system was similar, those revision became a cause of confusion between Gongbok and Sibok. For a while all ministers wore red Gongbok and Sibok, but after those revision the color of official's robe was changed by officials' rank: the higher ranking officials' Gongbok and Sibok are red, the lower ranking officials' are bluish green.

• Journal of the Korea Fashion and Costume Design Association
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• v.21 no.2
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• pp.75-94
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• 2019

The Joseon Tongsinsa Festival has been held annually in May in Busan. It reenacts the procession of the Joseon Tongsinsa that the Joseon Government delegated to Japan four times in the 18th century. In the most important situation during the meandering period, three envoys (Jeongsa, Busa, Jongsagwan) who led the Joseon Tongsinsa, wore Jobok, but at the Joseon Tongsinsa Festival, the three envoys are wearing Jobok, which are not historically accurate. The Jobok called Geumgwan Jobok and were comprised of Yanggwan, Eui, Sang, Jungdan, Peasul, Su, Pumdae, Daedae, Paeok, Hall, Mal, and Hwa. These were ranked from first class to ninth class by personal ornamentation such as Yanggwan, Su, Pumdae, Paeok. So, this study is focused on ascertaining the Jobok of the 18th century for the three envoys who were ranked third grade. This study is based on literature, artifacts, and portraits that can depict the 18th century Jobok including all components. It was based on The 7th Korean Human Body Survey Final Report (2015) in order to produce all components of the Jobok of the modern males in their 50s who are playing the role of the three envoys in the Joseon Tongsinsa Festival.

• Journal of the Korean Professional Engineers Association
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• v.34 no.2
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• pp.57-61
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• 2001

There has never been a point in tine as the $20^{th}$ century where mankind has faced various Issues. During the past century, the human race has come to believe that the law of nature can be substituted by the development of science and technology. Scientists have worked on the atomic bomb and mainpulated the structure of the DNA. The $20^{th}$ century is a special landmark In human history. The various privileges that we are entitled to now are all the products of this century. The world population has Increased from 600 million In the 18u century to 900 million In the 19a century. This was larger due to the advance of science and technology during the 20u century. At this speed, it is anticipated that It will reach 30 billion by the end of the century. From a political perspective. there was turmoil. From an economic perspective, there were quantum leaps. The significant development of science and technology has enhanced the quality of human life. The $21^{st}$ century now awaits us. Things like memory cells and brain transplants may be realized and nuclear fusion may happen In the near future.

• Journal of the Korean Society of Clothing and Textiles
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• v.18 no.1
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• pp.140-159
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• 1994

Heraldry, which originated from the culture of knights in the 12th century, came to be drawn on shields, and was inherited as a symbol of the family at the end of the 12th century and developed rapidly through the 13th and 14th century. Afterwards heraldry was in great vogue and used in the shields, clothes of men and women, armors, housings and flags. Therefore the citizen class as well as nobles and knights came to possess heraldry. In particular parti-color and impaled coat were accepted in the clothes, and served the dual purpose of status symbol and ornament in the 13th century. It can be said that the appearance of heraldry on the clothes was typical of the Middle Ages. The origin, generally accepted, was that the crusaders wore the surcots, also known as the cyclases, on the armors to prevent the powerful sun of Syria and dust of deserts, and to prevent the armors from rusting due to moisture. As the surcot was made of white linen or white silk till the beginning of the 13th century, knight's heraldry came to be put on the surcot in order to identify each corps. According as the coat of mail covering all the body was devised, the same heraldry attached on the shield seemed to appear on the clothes of surcot or jupon(afterwards pourpoint) in order to identify the status in the battlefield and tournament. Heraldry, a system of mark in the 12th century, was used as a symbol of authority of the upper class such as the Royal House, nobles and knights, and may have been mysterious instruments in the Milddle Ages. However, in the modern times of the 20th century heraldry has come to be a kind of symbol marks such as badges and banners symbolizing the hallmark of the goods of enterprises, organizations and groups. Heraldry, existing up to now, of the individuals as well as international organizations can be seen as a result of deep-rooted tradition for esthetic appreciation and symbolism for heraldry.