• 한국수학교육학회지시리즈E:수학교육논문집
• /
• 제35권4호
• /
• pp.413-423
• /
• 2021

수학적 대상 중 하나인 공집합에 대하여 고찰해본다. 공집합과 관련된 학생들의 다양한 오개념과 그 원인을 살펴보고 역사적 공집합의 도입배경과 이와 관련된 집합론의 공리계를 살펴본다. 순수한 개념적 대상인 공집합을 통하여 수학적 대상의 속성을 알아보고, 공리적 집합론에 기반하였다고 알려진 현대 철학자 알랭 바디우(Alian Badiou)의 존재론을 살펴본다. 이상의 논의를 바탕으로 연립방정식의 해와 해집합을 집합을 통해 설명하고 이와 관련하여 공집합의 존재성이 갖는 의미를 고찰하여본다. 이러한 관점으로 집합적 사고를 재해석해보고, 수학의 공리적 철학적 측면이 갖는 의의를 제시한다.

• Architectural research
• /
• 제25권2호
• /
• pp.29-40
• /
• 2023

The purpose of this study is to analyze the conflicts caused by the spatial expansion in two types of urban heritage in Seoul. To explain the national and professional orientation found in each spatial transformation, the study brought the concept of 'historic state' and 'epitome,' thereby examining the operating system of the conflicts. Field observations and stakeholder interviews were performed based on literature and historical research. The study results are as follows. ①In the case of Gwanghwamun and Donuimun, the spatial expansion is to find the historic state of the sites. Gwanghwamun with high national status and substance, conflicts show a pattern that spreads to memory conflicts. Donuimun is relatively unknown and has no substance so that a flexible method of digital restoration was applied. ② In the case of Ikseon-dong and Bukchon hanok, they show heterogeneous spatial expansion. The conflicts in relation to this is caused by the epitome of hanok. In Ikseon-dong, illegal installation of structures(non-epitome) is prevalent, while in Bukchon, there was a process of transferring the new basement(non-epitome) as part of the hanok. ③Conflicts in Gwanghwamun can be coordinated by referring to the digital restoration of Donuimun, and conflicts in Ikseon-dong can be resolved by taking Bukchon as a precedent.

• Acta Via Serica
• /
• 제8권1호
• /
• pp.87-100
• /
• 2023

Interaction between sedentary and nomadic cultural traditions has played an important role in the centuries-old history of applied arts in Uzbekistan. By the late 19th and early 20th century, driven by urbanization in the region and the gradual transition of nomadic and semi-nomadic peoples to sedentary lifestyles, many industries and traditional cultural forms of formerly nomadic ethnic groups disappeared. Nevertheless, their role in shaping the national cultural identity of the Uzbek people is great. This is true in relation to one of the largest ethnic groups in Uzbekistan, the Kungrats, whose applied art represents a unique, viable, and yet little-studied phenomenon in the national culture of Uzbekistan. The article reviews carpet weaving, one of their surviving crafts, exemplified by qiz-gilam, a unique type of rug made using a combined technique. This study helps to show the nature of historical and cultural interrelations in the carpet weaving of Central Asian peoples and their cultural contacts with the carpet art of neighboring regions more widely and objectively. An important theoretical result of this study is the creation of criteria and tools for identifying qiz-gilam carpets. This allows us to bring clarity to the yet undeveloped system of their identification in museum and gallery practice.

• Journal of Astronomy and Space Sciences
• /
• 제28권3호
• /
• pp.163-172
• /
• 2011

An intensive analysis of 185 timings of WZ Cep, including our new three timings, was made to understand the dynamical picture of this active W UMa-type binary. It was found that the orbital period of the system has complexly varied in two cyclical components superposed on a secularly downward parabola over about 80y. The downward parabola, corresponding to a secular period decrease of $-9.{^d}97{\times}10^{-8}y^{-1}$, is most probably produced by the action of both angular momentum loss (AML) due to magnetic braking and mass-transfer from the massive primary component to the secondary. The period decrease rate of $-6.^{d}72{\times}10^{-8}y^{-1}$ due to AML contributes about 67% to the observed period decrease. The mass flow of about $5.16{\times}10^{-8}M_{\odot}y^{-1}$ from the primary to the secondary results the remaining 33% period decrease. Two cyclical components have an $11.^{y}8$ period with amplitude of $0.^{d}0054$ and a $41.^{y}3$ period with amplitude of $0.^{d}0178$. It is very interesting that there seems to be exactly in a commensurable 7:2 relation between their mean motions. As the possible causes, two rival interpretations (i.e., light-time effects (LTE) by additional bodies and the Applegate model) were considered. In the LTE interpretation, the minimum masses of $0.30M_{\odot}$ for the shorter period and $0.49M_{\odot}$ for the longer one were calculated. Their contributions to the total light were at most within 2%, if they were assumed to be main-sequence stars. If the LTE explanation is true for the WZ Cep system, the 7:2 relation found between their mean motions would be interpreted as a stable 7:2 orbit resonance produced by a long-term gravitational interaction between two tertiary bodies. In the Applegate model interpretation, the deduced model parameters indicate that the mechanism could work only in the primary star for both of the two period modulations, but could not in the secondary. However, we couldn't find any meaningful relation between the light variation and the period variability from the historical light curve data. At present, we prefer the interpretation of the mechanical perturbation from the third and fourth stars as the possible cause of two cycling period changes.

• 기록학연구
• /
• 제17호
• /
• pp.115-156
• /
• 2008

공공기관의 활동과 관련하여 생성된 행정박물은 문자로는 표현할 수 없는 상징성, 역사성 및 심미성과 함께 형상물로서의 가치가 크기 때문에 향후 전시 및 활용의 가치가 높다. 우리나라에서는 지난 2006년 "기록관리혁신 종합실천계획"을 통해 행정박물을 공공기록으로 인식하고 그에 대한 적극적인 관리의지를 표명하였다. 이와 함께 개정 기록관리법에서는 행정박물 역시 업무와 관련하여 생산 접수한 기록물의 범주에 포함시킴으로써, 모든 공공기관에서 행정박물을 관리케 할 수 있는 기반을 마련하였다. 행정박물을 기록으로 인식하고 관리의지를 명문화했다는 점은 이전과는 다른 개혁적 의도로 볼 수 있지만, 행정박물에 대한 개념 규정 및 이를 체계적으로 관리 보존할 수 있게 하는 방안은 아직 미비한 상태이다. 이에 본고에서는 행정박물 관리체계 구축방안 마련을 위한 일환으로, 행정박물의 유형분류 및 평가 문제를 고찰하였다. 행정박물의 관리체계 구축을 위해서는 우선적으로 행정박물에 대한 명확한 개념 규정 및 구체적인 유형 파악이 선행되어야 한다는 전제 하에, 실제 조사자료 및 현행 유관법령을 기반으로 행정박물의 정의 및 유형분류를 시도하였다. 또한 공공기관의 업무와 관련하여 생산 활용되는 물품 중 어떠한 대상을 행정박물로 획득하여 관리할 것인가를 고찰하기 위해, 행정박물 선별 상의 특성을 분석하였다. 이를 바탕으로 우리나라 행정박물 선별 체제 및 영구보존 대상 선별기준 마련을 위한 방안을 제시하였다.

• 한국철학논집
• /
• 제23호
• /
• pp.181-216
• /
• 2008

이 글에서는 민이승(閔以升) 사상 가운데 주로 1)지와 지각의 문제, 즉 심성(心性)의 구분에 관한 논의문제, 이와 관련하여 펼쳐진 2)정제두와의 양지 지각의 동이성 문제에 관한 논의 등으로 나누어 살펴본다. 민이승은 양명학자 정제두와 양명학의 시비문제를 둘러싸고 논쟁을 전개하고 있는데, 그 내용은 양명학의 중심개념인 양지와 지각의 동이문제이다. 또한 민이승은 양지와 지각 논쟁의 연장선상에서 김창협과 지(智)와 지각(知覺)의 동이문제를 둘러싸고 논쟁한다. 민이승은 정제두와의 양명학 논쟁에서 양명학의 '심즉리'설과 '지행합일'설에 대해 부정하고 있으며, 양명학의 중심개념인 양지는 천리와는 구분된 지각으로 파악하고 있다. 정제두와 양지와 지각의 관계에 대해 논쟁하고 있는 민이승은 당시 학계에서 진행되고 있었던 지와 지각의 관계에 관심을 가지게 된다. 이 결과, 민이승은 김창협과 지와 지각의 동이문제에 대해 한차례 논쟁을 벌이게 된다. 민이승과 김창협 사이에 전개된 지와 지각의 관계에 대한 논의는 지와 지각의 관계를 불상잡(不相雜)의 측면에서 보느냐 아니면 불상치의 측면에서 보느냐 하는 차이점에 있다. 김창협은 지와 지각이 서로 섞일 수 없다는 불상잡의 입장을 강조하는 데 비해, 민이승은 지와 지각의 관계를 불상리의 입장에서 양자의 연관성에 주목하고 있다. '양지와 지각의 동이문제', '지와 지각의 동이문제'라는 논쟁 주제를 중심으로 양자의 입장 차이를 살펴보고, 이러한 논쟁이 사상사적으로 어떠한 의의가 있는가 살펴보기로 한다.

• 건축역사연구
• /
• 제10권3호
• /
• pp.7-23
• /
• 2001

We Koreans are very proud of this nation's cultural history over some five millenniums. But most of the relics found in the nation date back up to two thousand years. Under this circumstance, we are wondering the gap and missing of three thousand years. In our traditional literature of history, [Chiwoo] was a military god of supreme dignity and virtue. He was a symbol of brave and strong warriors and since the antiquity, he has been kept alive deeply in the mind of the Korean race. Considering findings through this study, the researcher could provide a conclusion as described below. 1) The name of Paekje's designed tiles was initially made by a Japanese scholar who had first found the antique relic. According to studies by a few of Korean researchers, the name is usually called despite its relation with a historical background of the excavated objects has not been fully studied. 2) After the patterned objects of the Korean antique Kingdom, Japanese researchers reported that [Chiwoo] was a military god as exorcist and probably represented something in the form of a ghost, although there were arguments that the military god was the very being to influence the image of the ghost. This report suggests that the Japanese community didn't downgrade the military god onto the level of a ghost. 3) One of our antique nations, Paekje at that time sought to determine the origin and culture of the Koreans by making multiple exchange relations with China, and probably accepting cultures of the Chinese Han nation and those of the Chinese South and North Dynasty period. Based on findings from a relevant literature, [Sulyigi], people of Paekje attempted to show express the image of Chiwoo in their own unique ways and then deliver the strong bravery of [Chiwoo] to us, or their descendents. This can explain that those findings as above mentioned are consistent with the designed tiles of Paekje, and that the tiles should not be named as the design of ghost. 4) The designed tiles involved elements of Taoism and Buddhism and substantially considered the spirit of four gods which was mobilized for the tomb construction and selection at that time. But this should never be a reason why all of the horned figures seen in tomb wall paintings are collectively treated as ghosts. 5) From the view of historic literature, we can no doubt say that the Heavenly Emperor [Chiwoo] was our ancestor. It is not better to say that the relic stuffs as excavated should be referred to the design of ghost image only in that they have yet to be associated historically with other relics. This claim would be newly changed as it becomes clear with historical remains that our antique ancestors kept doing positive activities along the coast of the antique kingdom, Balhae.

• 복식
• /
• 제54권1호
• /
• pp.23-36
• /
• 2004

The knitting, which has developed from the onset of human civilization, has a close relation to dwelling as well as to clothing itself. Its progress has taken shape in a variety of forms according to nature-friendly tools and its knit texture in the past is different from that of modern times. With this basic idea, the work aims at the further study of various knitting structure which triggered the origin of modern techniques, the establishment of those methods, and the finding of what means was utilized earlier based on these. By doing that, this study will provide the foundation in the Korean historical timeframe in knitting field and give definition to knit wear in a historical sense. As to definition, the outcome in the research boils down to two categories. broad meaning and narrow meaning. The former can be the hook-formed textile, referring to making, twisting, or binding the knots. On the other hands, the latter, that is, narrow type, can be the loop-linked fabric which can be defined as modern knitting. The knitting dates back to the ancient way of binding structure, combining structure in other words, and braiding structure and this kept dividing into subgroups like Netting. Nalbinding, Sprang and Crochet as the usage of hands and tools by mankind has got improved. And it changed into knitting and crochet which means a bamboo needle-hook knitting (larger needle type) and a crochet-hook knitting (smaller needle type), respectively through middle ages and modern times and settled down to the production of fabric. In this work, Netting, Nalbinding, Sprang and Crochet are classified as ancient category in which these originate the modern knitting method. Though the modern type of knitting is not found in the Joseon Dynasty, some various methods from the ancient twisting skill and binding skill where the materials with easy access to acquisition in the nature such as rattan, straw, horsehair, hemp, rush, cotton, silk and the like to Netting, Nalbinding and Sprang except Crochet were handed down and used in costume for diverse application. This work can provide the basic frame in terms of Korean history of knitting which has been excluded in the relevant researches until now. When applying the study, it would trigger the initiation of more versatile design with which the previous unique techniques along with modern techniques can be adopted in the clothing market as knit designs gain in public favor more and more.

• 건축역사연구
• /
• 제11권2호
• /
• pp.7-22
• /
• 2002

Architectural style is said to be product reflecting political, social and cultural condition. Especially, in colony, architectural style is strongly related to political condition or policy. After colonization in 1910, public buildings with western historical architectural style in Japanese version were widely built by Japanese colonial government in Korea. And in the late 1920s, modernism style in architecture became dominant in Korea as like other countries. In this situation, curious buildings in strange architectural styles came out. One example is railroad station buildings with traditional Korean architectural style and timber house station having a steep roof which is widely used in North Europe such as Alps area with good sights and mountains. Generally, the colonizer says that colonization is the only way to save the colony at crisis defined by colonizer and they insist that they can help the colony modernize. To justify colonization, the colonizer attributes the colonization to the characteristics of the nation and stagnation of the traditional culture etc.. Accordingly, the colonizer tries to depreciate colony's traditional value and culture. In case of colony which has similar cultural background historically (in this case, economical exploitation is less important than other Asian colony by European power), this depreciation of traditional value and culture in Korea was done more strongly than others. At this time, we should understand special relation between Korea and Japan historically. Even though, colony's locality is adopted by the colonizer in public fields, which is based on political purpose or exotic taste etc.. In early days of Japanese ruling period, Japan never use the Korean traditional facts in public. Therefore there is no use of Korean traditional architectural style in public field. In late 1920s, some railroad station buildings were constructed in new styles without precedence in modern Korea. One is railroad station buildings in Korean traditional architectural style, the other is railroad station buildings in timber house stations having a steep roof which is different form western historical architectural style. It was mystery that Japan had constructed railroad stations in Korean traditional style which Japan had tried to destroy together with Western style railroad station buildings. This paper is made to solve the mystery why the colonizer(Japan) constructed entirely different types of railroad stations at the same time in the late 1920s and 1930s. The key point to solve this mystery is tourism. In this paper, to solve this mystery, I try to use terminology' 'Colonial Tourism' in architecture why colonial power had constructed railroad stations with colony's traditional architectural style and Western style having a steep roof which can be seen north European region.

• 한국언론정보학보
• /
• 제34권
• /
• pp.34-62
• /
• 2006

21세기 정보사회의 지구적 거버넌스를 구축하고자 했던 '정보사회 세계정상회의(WSIS)'가 2003년 제노바에서, 2005년 튀니스에서 개최됐다. WSIS는 세계 각 나라의 정부를 비롯해, 민간영역, 시민사회, 국제기구들이 한 자리에 모여 '지구적 정보사회(global information society)'를 위한 국제질서를 수립하고자 하는 시도였다는 점에서 의미를 갖는다. 이에 본 연구는 WSIS가 제시하는 정보사회와 정보질서의 패러다임을 살펴보고 있다. 이를 위해, WSIS의 역사적, 국제질서적 맥락을 살펴보고 있으며, 나아가 WSIS가 제시한 의제들을 검토하고 있다. 그 결과, WSIS가 새로운 지구적 거버넌스 구축을 국제사회의 모든 이해당사자들의 조율 속에서 진행했다는 점, 그리고 이러한 과정에서 개발도상국들의 이해를 점진적으로 반영했다는 점에서 긍정적으로 평가된다. 또한, 정보질서를 위한 국제사회의 중재자로 국제전기통신연맹(ITU)의 역할이 부각되었다는 점 역시 주목할 부분이다. 하지만, 정보통신기술(ICT)을 주요 수단으로 삼아 인간중심의 포괄적인 정보사회의 비전을 제시하고자 했던 WSIS의 논의는 자칫 장미빛 미래와 과도한 기술결정론에 치우칠 우려를 보여준다. 나아가, 본 논문은 WSIS 논의가 신자유주의적 질서에 입각해 있는 현재의 정치경제학적 맥락의 결여로 인해 논의의 결과인 핵심원칙들과 행동계획을 흐리게 할 수 있음을 지적한다.