• Journal for History of Mathematics
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• v.30 no.5
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• pp.261-287
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• 2017

De Zolt's axiom which is a precise formulation of Euclid's Common Notion 5, "the whole is greater than the part", for the notion of 'content' holds in any Hilbert plane. In this article, we study the history of de Zolt's axiom which has its origin in Euclid's Common Notions, and introduce an example of a plane geometry in which de Zolt's axiom does not hold. We show that there is no area function in this geometry and every square is equidecomposable with a square which is properly contained in the first one. From this we also show that there are two equidecomposable rectangles which have the same base and do not have the same altitude, and there is a rectangle which is equicomplementable with an emptyset.

• Explosives and Blasting
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• v.31 no.1
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• pp.87-92
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• 2013

Although precision blasting constructions are increased by explosive industry, the studies on the history of explosive are small in number. In this study, we tried to find the origin of explosive and make it, which we found, be storization to develop the technology of modern explosive and blasting. Also, we presented the methods that apply storytelling about the explosive technology to construction project.

• The Journal of Korean Medical History
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• v.28 no.2
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• pp.23-36
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• 2015

Objectives : This research had been designed to survey Li Chan 's viewpoint of physiological characteristics of tripple energizers and discover his own medical distinction in them. Methods : First, look up contents related with it's physiological characteristics in his book, Introduction to Medicine. Second, investigate which books they had derived from. Third, decide whether the contents were originative or not. Results & Conclusions : Even though his viewpoint of it's characteristics mostly followed Neijing (內經) and Nanjing (難經), he partially changed and added some theories in his book. For example, he regarded that tripple energizers played a role in not only 6 vowels but also 5 viscera, developed man's essence-spirit and made his joints strong. These came from Wang Haogu (王好古)'s CiShiNanJi (此事難知), Suwen (素問) ShengQiTongTianLun (生氣通天論) and so on.

• The Journal of Korean Philosophical History
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• no.52
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• pp.243-280
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• 2017

To the mid 19th from the early 20th century, there were many movements about religion in Korea society. Protestant which first flew in 1885 grew up greatly and Confucianism of traditional thought sought for religionization to survive. At once new religions named Korea ethnical religion appeared. They are Donghak(東學), Daejonggyo(大倧敎), Jeungsangyo(甑山敎) and Won-Buddhism. Generally speaking, these ethnical religions deeply relates with Korea original mental culture. In this paper, I want to infer that these religions have Korea origin metal culture. The first, I will consider some traditional thoughts of (1) worshiping of Heaven, (2) practice and (3) harmony from traditional (religious) ceremonies and thoughts. Ans then I will infer how these traditional thoughts from origin mental culture appear in ethnical religions of Donghak(東學), Won-Buddhism(圓佛敎), and Jeungsangyo(甑山敎).

• The Journal of Korean Medical History
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• v.34 no.2
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• pp.65-77
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• 2021

Lee Jema said in his book, Dongui Susebowon, that the prescriptions for Soum constitutional type were already developed by doctors during the Song Jin Yuan China around 10th-13th century. Those prescriptions were common techniques that were used throughout the East Asian region. Among them, Lee Jema specially selected some candidate formulas and modified them according to his constitutional theory. This study investigated how similar his modified prescriptions to original formulas through database[ancient formula database] analysis. 24 out of 24 Soum prescriptions selected meaningful ingredient herbs from the original formula. A 50% or higher concordance rate compared to the original formulas. There are only 9 treatment prescriptions that cannot be checked in the ancient formula database. A future task will be to reveal the practical meanings of the ingredients Lee Jema adjusted for the Soum constitutional type patients.

• Journal of Information Technology Services
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• v.20 no.6
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• pp.83-95
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• 2021

In this study, various usage patterns were analyzed after establishing a data mart for micro mobility analysis based on the rental history of public bicycles in Seoul. Rental history data is origin-destination data that includes the rental location and time, and the return location and time. About 1500 rental locations were classified according to the characteristics of the location to create a 'station type' dimension. We also created a 'path type' dimension that displays whether the rental location and return location are the same. In addition, a derived variable called speed, which is obtained by dividing the distance used by the time used, is added, and through this, the characteristics of the riding area and the reason for the rental can be estimated. Meanwhile, administrative district link, administrative neighborhood link, and station type link were created to apply network analysis. Through this analysis, the roles and proportions of administrative districts, public facilities, and private facilities engaged in micro-mobility services were visualized. 49.9% of rentals occur at rental offices near transportation facilities, and half of them occur at rental offices near subway stations. The number of rentals during the evening rush hour is more than double that of the morning rush hour. When the path type is unidirectional, there is a fixed destination, so the distance and time used are short, and the movement speed tends to be high. In the case of round-trip, the purpose of use is exercise or leisure, so the distance and time used are long, and the movement speed is slow. It is expected that the results of the analysis can be used as reference materials for selecting new rental locations, providing convenient services for users, and developing user-specialized products.

• The Journal of Korean Medical History
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• v.35 no.1
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• pp.135-147
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• 2022

Sin Dae-woo was a scholar representing the Ganghwa School in the late Joseon Dynasty. He was Jeong Je-du's grandson-in-law and also in charge of organizing Jeong Je-du's collection of writings. His three sons had a particularly close relationship with their father, so even when they published a collection of writings after his father's death, the names of the three were combined and marked as Jin-jak-shin. The records they left include Seokcheon Il-seung, who described the history of the family along with the collection of writings, Seongdo Il-rok, a diary of the time of Seongcheon Busa, and many letters exchanged over time. These records draw attention as they contain records of medical life, such as eye diseases that the family suffered, infectious diseases that caused many casualties, and Yakro (distilled herbal essence) that showed records of being used for treatment at the time. In this paper: 1) We examine the medicines, prescriptions, acupuncture, and medication used to treat eye diseases. 2) We carefully examine the epidemic, the responses of the parties to it, and the attitudes of those who stood at the boundary between death and life. 3) We look for clues to the use of Western-origin drugs called Yakro. Intellectuals of the time looked deeper into Lee Kyugyung's book and Seo Yu-gu's book on how they were reflected in Joseon's medical life. In conclusion, in the 18th and 9th centuries, we see that the influential families of the Ganghwa school freely brought in famous acupuncturists, used prescriptions that were included in medical books or not, and used Yakro from western origin that were not traditional methods of Joseon. Thus, we reveal that doctors of the Joseon had the capacity to pursue their medical life more actively and had open-minded exchanges than our existing perceptions.

• Archives of design research
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• v.20
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• pp.135-144
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• 1997

Italian industrial design influences strong impression worldwidely by their identity of free style, unique and artistic character, and get a very important status in aspect of the history of design and economy. Also, italy has many common feature with Korea in the geographic back- ground, character of history, culture, and nationality that is well-oriented by emotion, and it seems to be formed a valuable study. This study is based on the book 'Italian Design Through Generations' by kazuko Sato and tried to examine the character of Italian design by searching history, exam- ples, representative designers and enterprises of Italy, and to draw some lesson from it for establishiment identity of Korean design by reflecting to the origin character of Korea. Also, this study aims to inspect change of the civilization paradigm which is entering new aspect, and to suggest an ablity of our origin character and direction of the development.

• The Journal of Korean Medical History
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• v.26 no.1
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• pp.1-7
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• 2013

Jeonuigam(典醫監) is one of the Big Three of medical government office through the Joseon dynasty era. But Jeonuigam literature is extremely rare. This paper is to analyze 362 cadets of "Jeonham-saengdoan(前銜生徒案)" by writer of Jeonuigam origin. Jeonuigam filled cadet on a three-year cycle because the national examination for medical officials is conducted on same cycle. Most cadets came from a few meritorious family of medical career officials. Ratio of ten major family stand at 34.91 percent. 373 of the 392 cadets are confirmed as family member of medical bureaucrat. They have a very closed society. Wancheon(完薦) and cadet system strengthen the monopholy power of a few family. The analysis of study confirmed that in the 19th century Joseon(朝鮮) dynasty had monopolized the medical technicians.

• The Journal of Korean Medical History
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• v.28 no.2
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• pp.1-13
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• 2015

Purpose : Local medicinal herb festivals present the history of the Korean medicine and cultural resources in the regions to play an important role in attracting tourists, vitalizing local economy, and improving the local image. Therefore, it is important to understand the origin of the festival and grasp historical and cultural meaning of local medicinal herb festivals. Methods : I compared the books and articles presented in the reference list. Results & Conclusions : Local medicinal herb festivals originates from traditional yangnyeongsi. Since the $17^{th}$ century, yangnyeongsi has grown up as a special market. Implementation of the Daedong Act promoted commodity and monetary economy that helped commerce and industry develop and market grow up. It also made changes in the social status system and yangnyeongsi has been such a historical phenomenon appeared in this social background. The growth of yangnyeongsi contributed to the progress in the private medicine that triggered the gradual transfer of power in the medicine to the private sector which has long been held by the government. In yangnyeongsi, there were many cultural events to attract visitors. It's the same case in China that preserves stages that were used for cultural events in the medicine market to pass down the historic sites while those in Korea are disappearing as yangnyeongsis are being pulled out of the city areas to the suburban areas due to the redevelopment projects. For this reason, restoration of the place for traditional yangnyeongsi should be taken into account through local medicinal herb festivals.