• Journal for History of Mathematics
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• v.18 no.1
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• pp.93-102
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• 2005

In this paper, we introduce the history of dynamical systems and the notion of the H-shadowing property. And we study some relationships between the H-shadowing property and other dynamical properties such as expansivity and topological stability.

• Journal of Korean Library and Information Science Society
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• v.53 no.4
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• pp.1-23
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• 2022

The record is both an palmistry and a fingerprint for human life and world of knowledge. Books, which are synonymous with records, are a channel through which history is traced and a window to savor. And the most primitive form of the book is the classics of ancient Greece and Rome, and the best part is the manuscript. It refers to the original recorded on papyrus, parchment, paper, etc. and the translated and translated copies of them. If we reflect on the long history of knowledge and culture, the classic manuscripts have continued to scatter and collect like a river flowing through time and space due to not only natural disasters, but also artificial cultural vandalism and the bibliocaust. Therefore, this study traced and linked the wandering and library return of classic manuscripts from ancient Greece to the medieval Renaissance period. As a result, dynasties and empires, monarchs and prime ministers, generals and conquerors, nobles and wealthy, clergy and scholars concentrated on collecting and translating classical manuscripts. If the ancient Greek and Roman scholars did not record knowledge and wisdom in papyrus and parchment, the medieval Byzantine and Islamic Empires did not collect, translate and reproduce classics, the book hunters didn't keep track of the classics, the Renaissance humanists did not restore and reinterpret the classics through intellectual exodus, and the historical library did not collect and preserve the classics and their translations, modern people would not have access to classical knowledge. Nevertheless, the tracing of classical manuscripts is an aporia in which many difficulties and contradictions overlap in the tracing of classic manuscripts due to historical flow, geographical wandering, and linguistic transformation. When a new manuscript is discovered and interpreted, correction and supplementation are inevitable, so the pursuit of the wandering and return of the classic manuscripts through follow-up research must be continued.

• The Korean Publising Journal, Monthly
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• s.219
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• pp.14-14
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• 1997

어린시절의 추억의 한 귀퉁이를 자리하던 연필을 당당한 주인공으로 내세워 그 일대기를 추적한 이 책은 연필 한 자루에 담긴 놀라운 인류 문명의 역사를 말해준다. 새롭고 기능성이 뛰어난 제품을 만들고자 했던 공학자들은 곧 잠재적인 혁명가이기도 하다.

• Journal of the Korean Society for Railway
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• v.14 no.6
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• pp.501-506
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• 2011

The study and techniques of system engineering have been applied to various fields including space-air, national defense division in advanced countries. Korea is currently in the early stages of introducing system engineering scheme in railway system and national defense division restrictedly. As theory and application of system engineering covers a wide scope, documents management and requirement analysis technology applied to establishment of standard and core unit development of the research target. The techniques which are historical management and trace among standards for establishment of standard are introduced using SE tools and participating agencies shared the information by constructing of database from all documents which are generated from the project. Through the functional analysis of the requirements for the intelligent station monitoring system in basic design stage, established requirements are verified and will be made official announcement as standard of the intelligent station monitoring system.

• Journal of Korean Society of Environmental Engineers
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• v.28 no.6
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• pp.588-595
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• 2006

Indoor radon($^{222}Rn$) concentrations of subway stations in Seoul area were measured to survey the environmental indoor radon levels and to identify sources of radon. The radon concentration of indoor air by method of long-term measuring with a-track detector were surveyed at 232 subway stations from 1998 to 2004. And the radon concentration in ground-water was measured with a method of alpha particle counting. To trace main source of radon, 8 out of 232 stations were selected and their radon concentrations in tunnel and on platform were analyzed. Total geometric mean and arithmetic mean of radon concentrations in all stations from 1998 to 2004 were $1.40{\pm}1.94pCi/L,\;1.65{\pm}1.07$ respectively. Geometric means of radon concentrations on platform and concourse were $1.54{\pm}1.96pCi/L,\;1.23{\pm}1.88pCi/L$ respectively, with higher concentration at the platform than at the concourse. The geological structure was significantly correlated to the indoor radon concentration in subway stations region. Radon concentrations of adjacent tunnel and ground-water of subway station was significantly correlated to the indoor radon concentration in subway stations. And There was a significant difference in radon concentration, depending on the depth levels in platform of subway stations(p<0.05).

• The Korean Publising Journal, Monthly
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• s.242
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• pp.13-13
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• 1998

이 책은 의상과 패션에서붜 문학.예술.법률.종교.철학 등 인간사의 모든 부문에 걸쳐 '여성의 정체성과 타자성'을 추적.탐구하여 여성의 다양한 목소리를 그대로 살려내고자 한다. 책을 읽으며 우리는 전혀 새로운 눈으로 기존의 철학자.혁명가.예술가를 바라보는 경이로운 체험을 하게 된다.

• Journal of the Korea Society of Computer and Information
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• v.27 no.8
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• pp.91-101
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• 2022

This study started with the awareness that the review of the historical origins of Korean broadcasting will be of great significance in exploring the future of Korean broadcasting, and examined the various "origins" of Korean broadcasting - colonial, Cold War, totalitarian, neoliberal. Based on the theoretical background of "media archaeology", the historical 'origin' of Korean broadcasting was applied to track the origin of Hallyu(the Korean Wave) in the 21st century by comprehensively examining the political and economic motives of the time, the state's situational awareness of problems, major broadcasting policies and broadcasting realities. As a result of the study, it came to the tentative conclusion that the historical origin of the Hallyu, which began to be formed in the 1980s, originated from the three origins of Korean broadcasting and the "synthetic mixture" in the subsequent development process.

• Bulletin of the Society of Naval Architects of Korea
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• v.41 no.2
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• pp.100-106
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• 2004

2003년에, 충남 부여시에 건립 중인 백제역사민속박물관에 전시할 '백제사신선'에 대한 복원을 추진할 때, 백제의 해양 활동과 원양 해선에 관한 자료와 역사 고증 자료를 찾아 보았으나 설계나 조선 공작에 도움이 될 만한 자료를 국내에서는 구할 수가 없었다. 2001년 하절에 일본 신호상선대학을 방문하였을 때, 일본의 견당사선에 관한 자문을 상선학부의 송목철 명예교수와 정겸광행 교수에게 구하였던 바, [일본서기]와 회화 등에 일본의 원양해선인 견당사선에 관한 유익한 자료가 있다는 고견을 들었으며, 그 때 견당사선에 관한 참고 자료도 얻을 수 있었다. 그리고 일본의 원양 해선인 견당사선은 백제선식의 선박이라는 것을 여러 자료에서 발견하게 되었다. 이 논문에서는 일본의 견당사선의 실체를 추적하여 백제선의 선형과 선양을 도출하려 한다. (중략)

• The Journal of the Korea Contents Association
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• v.14 no.7
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• pp.93-102
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• 2014

Recently, various types of dramas have been broadcasted in Korea. Especially, historical dramas having backgrounds about historical events or characters have been recorded high ratings of the viewing audience, as well as a lot of influence on many parts of Korean society. Besides, the historical drama like raised a craze for popular Korean cultures in many Asian countries. The subjects and characters of historical drama are diversifying in recent years. For example, is a royal cook, is a story about running away slaves and their chaser, is a story about a very well-known painter of the Joseon Dynasty era, and is a veterinarian. At this point, in celebration of the officially appointed "year of mathematics", it is very meaningful to demonstrate the importance of mathematics with a historical drama about mathematics and mathematicians of the Joseon Dynasty. In this article, the reasons for production of historical dramas about mathematics and mathematicians in the Joseon Dynasty was presented in two ways. First, modern mathematics has high level of abstractness as its nature, and therefore many students and the public can not understand what except for some areas. Second, it is possible the easier and various approaches can be used to deal with contents about real-life in the view of popularization of mathematics. Also, this article would aim to explore the main character and episodes about mathematics and mathematicians in Joseon Dynasty. For example, the anecdote of Hong Jung Ha, the works of mathematics in the King Sejong's periods, the study of Hong Gil Ju, the joint researches between Nam Byung Gil and Lee Sang Hyuk, the story of Lee Seung Hun, and the mathematics study of middle class people.

• Journal of the Korean Geographical Society
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• v.50 no.3
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• pp.305-323
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• 2015

The main purpose of this paper is to explore the paradigm shifts of landscape studies in Anglophone cultural and historical geography. By analyzing the work of the Berkley School in the 1950s and 1960s, the advance of humanistic geography in the 1970s, the revival of cultural geography in the 1980s ("new cultural geography"), and the recent development of non-representational geography, this paper demonstrates that the paradigms of landscape studies in Anglophone cultural and historical geography have been changed. By giving buoyancy to the concept of 'Affect'-a kind of 'spatio-bodily-magnetic relation'-as an essence of non-representational geography, I provide an easy way for understanding the implications of non-representational geography. In addition to this, re-conceptualising Non-Representational Theory (NRT) based non-representational geography as 'Kyung-Chi Jirihak' in Korean lexicon context, it is suggested that what the directions of landscape studies of cultural and historical geography of Korea should be and how it can be set up in the paradigm shifts.