• 제목/요약/키워드: The Universe and the Earth

검색결과 140건 처리시간 0.024초

중국 제복의 상징성에 관한 연구 (A study of Symbolics of Chinese Liturgical Vestments)

  • 이선희
    • 복식
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    • 제18권
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    • pp.111-131
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    • 1992
  • This thesis was designed to study Symbolics of Chinese Liturgical Vestments. Chinese who regarded the life of human beings as the combination of heaven and earth considered garments as the traditional product of the movement of nature. Accordingly, they thought human beings are the center of the universe composed by heaven and earth and the chief of all things; therefore man only can utilize clothes to distinguish from all of the colours. This views of clothes led to the development of liturgical vestments esteemed courtesy than anything else, especially the thought of courtesy associated with Conficius who regarded courtesy as the highest things and since then the theory of Five Elements and courtesy were inherited by all the adherents of Conficius. Yin and Yang Five Elements in the liturgical vestments was given absolute symbolics in both formative side and in colourful side. results of research studied in this was can be summed up as follows : 1. The crown of rites was made imitating after the system of head, horn, beard, bread of birds and beasts and that form of crown is front-circ-ular and back-rectangular meant to be towards light and dark. That the upper part of faceplace is black represented the way of heaven and lower part of red symbolized the way of earth. 2. Upper vestment of liturgical rites symbolizes heaven and outskirt represented earth. So front of outskirt is YANG and back is Yin. It is why then are going to harmonize positive and negative making front part three width and back part four width. Therefore, emperor who symbolizes heaven made the subjects recognize high and low and wore Dae-gu(大 ), Kon-bok(袞服), Bel-bok, Chui-bok, and Hyonbok according to the object and position of rites so that he may rule the country based on courtesy. 3. As an accessory of liturgical vestments, Bul, Pae-ok, Su, Dae-dai, Hyok-Dai, Kyu, and Hol were used. Before Bul was used man dressed skirt as the first waist-dress in order to conceal intimate part of the body. Pae-ok, as decoration blended with jade was worn by men of virtue, so men of virtue symbolized morality and virtue by Pae-ok. Su began from Yeok, connected with Pae-su , in Chou-dynasty is said to be originated by practical needs and they are divided into large Su and small su, and maintained as decoration to signify the class positions. Dae-dai did the work as not to loose the liturgical vestments and leather belt hang Bul and Su to begin as the function of practical use are in later years it became decoration to symboliz e the class position. Kyu was a jade used when empeor nominated feudal lords and observe ceremony to God and Hol, was held in hands to record everything not to forget. These Kyu and Hol became to offer courtesy during the time of rites and in later years it became used according to class position rather than practical use. 4. As far as colours are concerned, colours based by five colours according to YIN-YANG Five Elements theory and they were divided into a primary colour and a secondary colours. Primary colours corresponded with the theory of Five Elements each other, Blue, Red, Tellow, White, and Black symbolized ive Elements, five hour space, five directions, and five emperors. Secondary colours contradict with Blue, Red, Yellow, White and Black and another as a primary colour and they are Green, Scaret, Indigo, Violet, Hun colour, Chu colour, and Chi colour. This primary colour was used in liturgical vestments, that is, upper-vestments used black colour. This primary colour was used in liturgical vestments, that is, upper-vestments used black colour as primary colour and outskirt was used Hun colour as secondary colours. Thus symbolism in chinese liturgical vestments mainly began with heaven and earth and corresponded with YIN-YANG Five Elements Scool. They were developed as the scholary theory and Conficius and his followers in the later days and continued up to Min-dynasty.

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Multi-Messenger Observation of Gravitational Wave Source GW170817

  • Im, Myungshin;Kim, Joonho;Choi, Changsu;Lim, Gu;Lee, Chung-Uk;Kim, Seung-Lee;Lee, Mok Hyung;Yoon, Yongmin;Lee, Seong-Kook;Ko, Jongwan;Shim, Hyunjin
    • 천문학회보
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    • 제43권2호
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    • pp.31.3-31.3
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    • 2018
  • On August 17th 2017, for the first time in the history, the gravitational wave (GW) detectors recorded signals coming from the merger of two neutron stars. This event was named as GW170817, and more interestingly, gamma-ray emission was detected 2 seconds after the gravitational wave signal, and 11 hours later, telescopes in Chile identified that the GW signal came from the NGC 4993 galaxy at the distance of about 40 Mpc. This is again the first time that electromagnetic (EM) signals are detected for a GW source. The follow-up observations by astronomers all around the world, including our group in Korea, successfully identified the optical emission as the kilonova, the elusive optical/NIR counterpart that has been proposed to originate from a neutron star merger. This whole event started the new era of astronomy, so-called the "multi-messenger astronomy", where the combined information from GW and EM radiation reveals an unprecedented view of the universe. In this talk, I summarize this exciting event, and describe the efforts by Korean astronomers that have led to important discoveries about the kilonova and the host galaxy properties, and finally provide the future prospects.

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ACCELERATION OF COSMIC RAYS AT COSMIC SHOCKS

  • KANG HYESUNG
    • 천문학회지
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    • 제36권1호
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    • pp.1-12
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    • 2003
  • Nonthermal particles can be produced due to incomplete thermalization at collisionless shocks and further accelerated to very high energies via diffusive shock acceleration. In a previous study we explored the cosmic ray (CR) acceleration at cosmic shocks through numerical simulations of CR modified, quasi-parallel shocks in 1D plane-parallel geometry with the physical parameters relevant for the shocks emerging in the large scale structure formation of the universe (Kang & Jones 2002). Specifically we considered pancake shocks driven by accretion flows with $U_o = 1500 km\;s^{-l}$ and the preshock gas temperature of $T_o = 10^4 - 10^8K$. In order to consider the CR acceleration at shocks with a broader range of physical properties, in this contribution we present additional simulations with accretion flows with $U_o = 75 - 1500 km\;s^{-l}$ and $T_o = 10^4K$. We also compare the new simulation results with those reported in the previous study. For a given Mach number, shocks with higher speeds accelerate CRs faster with a greater number of particles, since the acceleration time scale is $t_{acc}\;{\propto}\;U_o^{-2}$. However, two shocks with a same Mach number but with different shock speeds evolve qualitatively similarly when the results are presented in terms of diffusion length and time scales. Therefore, the time asymptotic value for the fraction of shock kinetic energy transferred to CRs is mainly controlled by shock Mach number rather than shock speed. Although the CR acceleration efficiency depends weakly on a well-constrained injection parameter, $\epsilon$, and on shock speed for low shock Mach numbers, the dependence disappears for high shock Mach numbers. We present the 'CR energy ratio', ${\phi}(M_s)$, for a wide range of shock parameters and for $\epsilon$ = 0.2 - 0.3 at terminal time of our simulations. We suggest that these values can be considered as time-asymptotic values for the CR acceleration efficiency, since the time-dependent evolution of CR modified shocks has become approximately self-similar before the terminal time.

중력파와 천문학 (GRAVITATIONAL WAVES AND ASTRONOMY)

  • 이형목;이창환;강궁원;오정근;김정리;오상훈
    • 천문학논총
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    • 제26권2호
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    • pp.71-87
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    • 2011
  • Gravitational waves are predicted by the Einstein's theory of General Relativity. The direct detection of gravitational waves is one of the most challenging tasks in modern science and engineering due to the 'weak' nature of gravity. Recent development of the laser interferometer technology, however, makes it possible to build a detector on Earth that is sensitive up to 100-1000 Mpc for strong sources. It implies an expected detection rate of neutron star mergers, which are one of the most important targets for ground-based detectors, ranges between a few to a few hundred per year. Therefore, we expect that the gravitational-wave observation will be routine within several years. Strongest gravitational-wave sources include tight binaries composed of compact objects, supernova explosions, gamma-ray bursts, mergers of supermassive black holes, etc. Together with the electromagnetic waves, the gravitational wave observation will allow us to explore the most exotic nature of astrophysical objects as well as the very early evolution of the universe. This review provides a comprehensive overview of the theory of gravitational waves, principles of detections, gravitational-wave detectors, astrophysical sources of gravitational waves, and future prospects.

대순사상의 역학적 조명 - 종지(宗旨)를 중심으로 - (Daesoon Thought Explained Through the Philosophy of the Book of Change)

  • 최영진
    • 대순사상논총
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    • 제20권
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    • pp.169-191
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    • 2009
  • The Four Tenets of Daesoon thought are the Creative conjunction of the virtues of Eum and Yang, the Harmonious union of divine beings and human beings, the Resolution of grievances for the mutual beneficence of all life and the Realization of the Dao in the world. This article compares the concepts of the "Creative conjunction of the virtues of Eum and Yang", the "Harmonious union of divine beings and human beings" and the "Resolution of grievances for the mutual beneficence of all life" with "EumYangDaeDaeRon", "ShinMyonKiDeok", the Theory of Mutual Giving Life / Mutual Destruction (SangSaeng/SangGeukRon) of the Book of Changes and analyzes their common and different points. The conclusion is that Daesoon thought and the philosophy of the Book of Changes share common fundamental standpoints. However, the Daesoon thought defines the world of SeonCheon (the state before the Heaven and Earth have been created) as Mutual Giving Life (SangSaeng), and the world of HuCheon (the state after the Heaven and Earth have been created) as Mutual Destruction (SangGeuk). According to Daesoon thought the Mutual Destruction (SangGeuk) is seen as negative, while according to the philosophy of the Book of Changes the Theory of Mutual Giving Live/Mutual Destruction (SangSaeng/SangGeukRon) is viewed as a positive relationship of EumYangDaeDae. This is a point of difference between the Daesoon thought and the philosophy of the Book of Changes. According to EumYangDaeDae relationship theory the contradictory "other" is viewed not as an enemy, but as a necessary element that assures one's existence. When Buddhism and Christianity first came to existence, they did not belong to a main stream. Later, through continuous theorization and systematization they became generally accepted religions. The case of Confucianism was not much different. During Song dynasty in China Buddhism has contributed to the systematization and establishment of Neo-Confucianism; in the middle of 20th century the Confucian scholars of Hong Kong and Taiwan interpreted and defined Confucianism a new in the light of Western philosophy. Thus the "Modern Neo-Confucianism" came to existence. That's why the history of Confucianism is also called "the history of advancing and developing a concept". From this point of view the critical acceptance of some elements of Confucian, Buddhist, Taoist etc. traditions, as well as modern philosophy, by Daesoon, in order to achieve the systematization of Daesoon thought, is a very important process. As a part of this process, this essay explains the Daesoon thought from the point of view of the Book of Changes, which may be said to present the original East-Asian view of the world. Daesoon's emphasis of human dignity, the equality of sexes, the critics the hierarchical society etc. are rather "modern" and should be examined from the point of view of social science. Besides, leaving the boundaries of "modern philosophy", the concepts of "Harmonious union of divine beings and human beings", viewing the universe as one organism etc. should be approached from the point of view of Post-Modernism.

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대순진리회 목적(目的)에 관한 연구 (Examining the Object of Daesoonjinrihoe)

  • 유병무
    • 대순사상논총
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    • 제26집
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    • pp.183-214
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    • 2016
  • The purpose of this study is to promote the understanding of the objective of Daesoon Thought through 'examining the Objectives of Daesoonjinrihoe.' The objective of Daesoon thought was set when Kang Jeungsan Sangje descended to human world, upon the plea of divine sages, buddhas, and bodhisattvas, and determined to save the world and relieve people far and wide. For building an Earthly Paradise with Daesoon thought, Sangje carried out the great work of Reordering of the Universe for nine years and passed into heaven. Cho Jeongsan Doju, who received the heavenly religious orthodox through divine revelation from Sangje, served the late will of Sangje and established Main Tenets, Creeds, and objective of Daesoon thought. The objective set by Doju was continued to Park Wudang Dojeon and formed the Objectives of Daesoonjinrihoe. The Objectives of Daesoonjinrihoe consist of three sets of objectives in sequential order, which are related in organic, mutual beneficient, and integrative with one another. The Objectives starts from individual cultivation and expand into worldly reformation: 1)one's Spiritual transformation through Guarding against self-deception 2)Renewal of human beings through Realizing Earthly Immortality 3)Opening of new world through Building of Earthly Paradise. Also, in these Objectives of Daesoonjinrihoe, Three Realms of Heaven, Earth, and Humanity keep close relations to enter into new world. These Objectives are based on the 'thought of mutual beneficence' and are realized with Daesoon thought, which is the Dao of 'Crowned King' that goes beyond the previous thoughts of Confucianism, Buddhism and Taoism. Objectives of Daesoonjinrihoe have following details in each objective as following; (1) 'Guarding against self-deception-Spiritual Transformation' is for human nature. In Daesoon thought, human has the potential to restore conscience, which is true nature, and return to undefiled essence by 'guarding against self-deception'. In other words, it views that one can reach into the stage of spiritual alignment with the Dao once he recovers conscience through cultivation of Daesoonjinrihoe based on the idea of 'Guarding against self-deception'. (2) 'Realizing Earthly Immortality-Renewal of human beings' is for ideal human character. 'Realizing Earthly Immortality' in Daesoon Thought indicates the advent of ideal human beings called 'Dotong gunja'(virtuous beings who are aligned with the Dao). They are leaders who integrate politics and religion in helping people to renew themselves and make the world into Earthly Paradise. (3) 'Building an Earthly Paradise-Opening of new world' is for ideal society. Daesoon thought aims to making a peaceful world by creating an ideal society of heaven on this earth. Park Wudang Dojeon, who led Daesoonjinrihoe, emphasized the importance of Three Basic Activities: Spreading of Sangje's virtue, Edification, and Cultivation: and Three Major Activities: Aid and charity, Social welfare, and Education. Dojeon said "One should make effort to reach the utmost goodness through enlightening their bright virtue and cultivating their talent virtue." In this words, he made clear that the Objectives of Daesoonjinrihoe can be realized when people enlighten their bright virtue and cultivate themselves with their talent virtue. In conclusion, the Objectives of Daesoon thought were clarified of their meanings by Sangje, established into laws by Doju, and actualized by Dojoen in various activities of Daesoonjinrihoe.

양웅(揚雄)과 갈홍(葛洪)의 '현(玄)' 개념 비교 연구(2) - 우주구조론을 중심으로 - (A comparative study on the 'Xuan'in the view of Yangxiong & Gehong(2))

  • 이진용
    • 한국철학논집
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    • 제42호
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    • pp.165-195
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    • 2014
  • 이 글의 목표는 양웅(揚雄)과 갈홍(葛洪)의 '현(玄)' 개념을 우주구조에 관한 이론을 중심으로 살펴보는 것이다. 고대 중국의 우주구조론은 '천(天)'에 대한 이해로부터 출발하여, 천체의 구조, 천지의 구조 및 위치관계 등의 문제를 통해 한대(漢代)에 그 이론이 체계적으로 정립되었다. 다만 중국 전통시기의 우주구조에 관한 논의는 대부분 천문(天文)과 역법(曆法)을 통해 발전했듯이, 인간의 관점에서 인간사를 해명하기 위해 전개되었다. 양웅과 갈홍 또한 이러한 맥락에서 각자의 우주구조론 체계를 정립하는데, 그 특징은 다음과 같다. 첫째, 양웅은 우주구조론가운데 개천설(蓋天說)을 비판하며 혼천설(渾天說)을 수용하여 발전시켰고, 갈홍은 혼천설을 지지하는 가운데 선야설(宣夜說)의 일부 논의를 수용하였다. 둘째, 양웅과 갈홍의 우주구조론은 그들의 우주생성론의 이론적 출발점이다. 천체의 구조와 천지의 위치관계를 다루는 우주구조론을 중심으로, 그들은 각자 우주만물 생성의 근원과 생성과정에 대한 논의를 전개한다. 이 과정에서 두 학자 모두 '현(玄)' 개념을 중심축으로 하여 우주론 체계를 건립하였다. 셋째, 양웅과 갈홍의 우주구조론은 그들 철학체계를 지탱하는 이론적 전제가 된다. 양웅은 우주구조에 관한 논의를 통해 천도(天道)와 인사(人事)의 관계를 모색하고, 갈홍은 우주구조론을 활용하여 신선도교 이론체계를 정립한다. 이처럼 양웅과 갈홍의 우주구조론은 우주생성론과 함께 우주론체계의 중요 구성 요소가 되며, 두 학자 모두 '현' 개념 중심의 우주구조론과 우주생성론을 바탕으로 각자의 철학체계를 정립하였다.

우리나라와 이스라엘의 중학교 과학과 교육과정 비교연구 (Comparative Analysis of Middle School Science Curriculum between Korea and Israel)

  • 장진주;서혜애;송방호
    • 한국과학교육학회지
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    • 제23권5호
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    • pp.443-457
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    • 2003
  • 본 연구에서는 첨단 과학기술의 발달로 세계의 경제권을 주도하고 있는 이스라엘의 중학교 과학기술의 교육과정을 우리나라의 제7차 중학교 과학과 교육과정과 비교하였다. 우리나라에 비해, 이스라엘은 21세기 첨단 과학기술이 주도하는 국제사회에서의 국가 경쟁력을 과학기술교육의 강화에 기반을 두고 있는 것으로 고찰되었다. 이스라엘은 과학기술을 가장 강조하여 수업시간 수를 최고비율로 배당하고 있으며, 과학영역의 물리, 생물, 화학, 지구과학의 고전적 구분보다는 과학기술의 첨단 내용과 기술 사회적 측면의 내용을 첨가하여 에너지와 상호작용, 물질, 유기체, 지구와 우주, 기술체계와 생산, 정보와 통신, 생태계의 7개의 필수영역으로 구분하고 있었다. 특히 생태계을 가장 강조하고 있는 것으로 나타났다. 세부내용에서는 기술적 측면과 사회적 가치 측면을 강화하고 다학문적, 간학문적 접근방법을 도입한 과학 기술 사회 접근방법을 강화하고 있는 것으로 나타났다. 이러한 이스라엘의 과학 기술교육 교육과정의 내용, 수업시수 배분의 특징은 정보기술(IT), 생명공학기술(BT), 나노기술(NT) 등의 미래 유망 신기술을 추구하는 국가 과학기술인력의 기반을 형성하는 데 성공적으로 기여할 것으로 고찰되었다.

천문학적 사고를 반영한 천문교육 프로그램의 개발 및 적용: 과학관 천체 투영관 수업 사례 (The Development and Application of an Astronomy Education Program Reflecting Astronomical Thinking: A Case of Planetarium Class at Science Museum)

  • 최준태;이기영;박재용
    • 한국지구과학회지
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    • 제40권1호
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    • pp.86-106
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    • 2019
  • 이 연구의 목적은 천문학적 사고를 반영한 과학관 천문교육 프로그램을 개발하고, 그 프로그램이 고등학생들의 천문학적 사고 능력의 향상에 미치는 효과를 확인하는 것이다. 문헌 연구를 통해 천문학적 사고의 구성 요소를 선정한 후 사고력 학습 발달 모형을 응용하여 시연과 관찰, 문제 제시와 사고 활동, 지원과 모둠 토의, 시연과 평가의 네 단계로 구성된 천문교육 프로그램을 개발하였다. 이 프로그램의 효과를 검증하기 위하여 실험군과 대조군의 사전, 사후 검사에 대해 공변량 분석을 실시하였고, 프로그램을 이용한 교수 학습 활동의 사전과 사후에 학생들의 수준 변화를 살펴 보았다. 연구 결과, 천문학적 사고를 반영한 과학관 천문교육 프로그램은 학생들의 천문학적 사고를 증진시키는 데 효과가 있는 것으로 확인되었다. 특히 이 프로그램은 천문 영역의 공간적 사고와 관련하여 관측된 천문 현상을 우주에서 보는 관점에서 재구성하여 모델링하는 능력을 신장시키는 데 효과가 있었고, 시스템 사고와 관련하여 천문 시스템을 구성하는 요소들 간의 관계를 파악하여 시스템을 조직할 수 있는 능력을 향상시키는 데 효과가 있었다. 이 연구는 학생들의 천문학적 사고를 발달시키기 위한 구체적인 교수 학습 프로그램을 제시하였다는 데 그 의의가 있다.

WWT 빅데이터를 활용한 중학교 STEAM 프로그램 개발 및 적용 (Development and Application of Middle School STEAM Program Using Big Data of World Wide Telescope)

  • 유상미;김형범;김용기;김흥태
    • 대한지구과학교육학회지
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    • 제14권1호
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    • pp.33-47
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    • 2021
  • 최근 빅데이터에 기반한 교육의 활성화가 요구됨에 따라, 이 연구에서는 2015 개정 과학과 교육과정에서 '태양계', '별과 우주' 내용 요소를 중심으로, WWT 빅데이터를 활용한 천문교육 STEAM 프로그램을 개발하고, 이에 대한 효과성을 알아보고자 무선 표집된 1개의 중학교 176명의 학생들에게 이를 적용하여 창의적 문제해결, STEAM 태도 및 STEAM 만족도를 분석하였다. 이 연구의 결과는 다음과 같다. 첫째, 천문 데이터 시각화 플랫폼인 WWT(World Wide Telescope) 빅데이터를 활용하여 학생들이 적극적이고 자발적으로 학습에 참여할 수 있도록 프로그램을 개발하였다. 둘째, 창의적 문제해결 측정 검사의 사전·사후 점수 차에 의한 대응표본 t 검정에서 '과제집중' 구인을 제외한 '아이디어 수정', '이미지화', '비유', '아이디어 생성', '정교성' 구인에서 유의미한 통계적 검정 결과(p < .05)를 얻었다. 셋째, STEAM 태도 검사의 사전·사후 점수 차에 의한 대응표본 t 검정에서는 '배려', '유용성·가치 인식' 구인을 제외한 '흥미', '소통', '자아 개념', '자아 효능감', '이공계 진로선택' 구인에서 유의미한 통계적 검정 결과(p < .05)를 얻었다. 넷째, STEAM 프로그램 적용 후에 실시한 STEAM 만족도 검사에서는 하위구인들의 평균값의 범위가 3.16 ~ 3.90으로, WWT 빅데이터를 활용한 STEAM 프로그램을 통해 학생들의 과학교과에 대한 이해와 관심이 향상되었음을 확인할 수 있었다.