• Title/Summary/Keyword: Change history

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Climate change in Korea inferred from subsurface temperatures (한국의 지중온도를 이용한 기후변화연구)

  • Lee, Young-Min;Kim, Hyoung-Chan;Song, Yoon-Ho
    • 한국신재생에너지학회:학술대회논문집
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    • 2006.06a
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    • pp.442-444
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    • 2006
  • On long time scale and over large areas ground surface temperatures (GSTs) track surface air temperatures (SATs). Additionally, GST changes penetrate into the subsurface and are recorded as transient temperature perturbation to the background thermal filed. Therefore, climate change can be reconstructed from borehole temperature measurements We present GST hi story reconstructed from temperature measurements in a borehole at Pocheon The result shows that GST cold period in the late 19th century and then increased by about 2K to 1990. GST history matches well with surface air temperatures measured from 1907 to 2001 at the Seoul Meteorological Station and GST history reconstructed from temperature measurements in three boreholes at Ulsan.

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A study on the changes in the main space of Deoksugung Palace in the 1910s through the 『Deoksugung wonan』 (『덕수궁원안(德壽宮原案)』을 통한 1910년대 덕수궁 중심공간의 변화 고찰)

  • Su, Young-Ok;Kim, Wang-Jik
    • Journal of architectural history
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    • v.31 no.5
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    • pp.45-56
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    • 2022
  • The purpose of this study is to understand the architectural changes that occurred in the main space of Deoksugung Palace based on the Deoksugung Wonan. In the 1910s, constructions in the Deokhongjeon area and Hamnyeongjeon area caused a change in the main space of Deoksugung Palace, which is similar to the change in the central space of Changdeokgung Palace. In both palaces, the space composition, architectural structure, construction equipment, and architectural design of the palace were changed due to the changed architectural organization and construction system.

Taxonomy of the Family Antedonidae(Echinodermata, Crinoidea, Comatulida) in Korea

  • Won, Jung-Hye;Rho, Boon-Jo
    • Animal cells and systems
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    • v.5 no.4
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    • pp.299-302
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    • 2001
  • A taxonomic study of the family Antedonidae is presented. The specimens were collected in the coastal seas of Korea from 1970 to 1994 and deposited in the Natural History Museum of Ewha Womans University. Four species, Heliometra glacialis maxima, Antedon serrata, Antedon parviflora and Andrometra psyche of the subfamilies Heliometrinae and Antedoninae were identified, of which 3 species, Antedon serrata, Antedon parviflora and Andrometra psyche in the subfamily Antedoninae are new to Korea. The subfamily Antedoninae is reported for the first time in Korea.

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Phenomenology of the concept of functions (함수 개념의 현상학)

  • Yoo, Yoon-Jae
    • Journal for History of Mathematics
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    • v.23 no.3
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    • pp.75-90
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    • 2010
  • In this paper function concept is classified in the phenomenological aspect. According to the study, function concept is classified as causality, designation, operation, change, figure, morhism, variables, functional, and operator. This classifications are categorized as pre-level function, basic level function, and upper level function.

A Comparative Study on the Difference Between Herbal Formulations in Dongeuibogam and their Original Chinese Medical Texts (《東医宝鑒》 方劑引文与代表性中医原著比較硏究)

  • Kang, Hyeok-Jun
    • The Journal of Korean Medical History
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    • v.22 no.1
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    • pp.91-128
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    • 2009
  • This is a study on the difference between herbal formulations cited in Dongeuibogam and their original Chinese texts. We focused on the changes of herbal formulations from their original Chinese texts in the course of compilation of Dongeuibogam. We searched for the reason of this change on various aspects. Our findings confirmed the need for further studies in this field Through this study, we concluded that the changes between the original Chinese texts and Dongeuibogam are a consequent phenomena of historical progression. We hope lor this study to act as a foundation for further advanced studies.

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Faulkner's Narrative Strategies and the Nature of History in Absalom, Absalom!

  • Rhee, Beau La
    • Journal of English Language & Literature
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    • v.56 no.6
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    • pp.1091-1103
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    • 2010
  • Absalom, Absalom! is not only about family history but also about the nature of reconstructing history. Faulkner shows us what will happen if we give too much credit to the person having the authority; he first makes us listen to Rosa, so we just listen without doubt until we arrive at the question of the objectivity of her narration, when we get to know Sutpen's design. Meanings of "facts" change depending on who perceives the facts. The incremental repetition of the narrative in the novel resembles the process of our thinking mind and the process of history being constructed. Time is a significant element in determining the meaning of an event, not only because the event cannot be understood without its social, cultural context of the contemporary, but also because only the later events make it possible for the perceiver to categorize it in its proper place in history. Furthermore, through his narrative strategy, Faulkner suggests that imagination play a large part in recreating history. He blurs the distinction between facts and imagination, making us regard Shreve's and Quentin's conjectures as facts in several ways. The conversation between father and son, and the two brothers, which is an imagination constructed through the clues Mr Compson has offered, becomes a fact willingly accepted by the readers as well as Shreve and Quentin. The people in the past, present, and future may be very much unlikely to agree on the same event, because the gap in temporality will keep widening our perceptions. Faulkner demonstrates the nature of history in such a way that we can compare our understanding of the Sutpens' history in the earlier and later part of the novel through repetitions.

Fatigue Analysis of Bike Brake under Nonuniform Load (불규칙 하중을 받는 자전거 브레이크의 피로 해석)

  • Cho, Ja-Eung;Han, Moon-Sik
    • Transactions of the Korean Society of Automotive Engineers
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    • v.20 no.4
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    • pp.133-141
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    • 2012
  • This study investigates structural and fatigue analyses of bike brake. Maximum equivalent stress of the model of mountain bike is 4 times as much as the model of general bike at static analysis. In cases of mountain and general bikes, maximum damage frequency at load of 'SAE bracket history' with the severest change of load becomes as much as 16 times than the most stable load of 'Sample history' among the nonuniform fatigue loads. In case of mountain bike, the possibility of maximum damage becomes 3% at the load of 'Sample history' with the average stress of 0 to $-3{\times}10^4$MPa and the amplitude stress of 0 to $10^4$MPa. In case of general bike, the possibility of maximum damage becomes 3% at the load of 'Sample history' with the average stress of 0 to $-0.8{\times}10^4$MPa and the amplitude stress of 0 to $0.2{\times}10^4$MPa. This stress state can be shown as 5 to 6 times more than the damage possibility of 'SAE bracket history' or 'SAE transmission'. The analysis result of this study can be effectively utilized for the safe design of bike brake.

Improving the Precision for the T-history Method for Latent Heat Measurements of Low Melting Temperature PCMs (T-history법에 의한 저온 PCM 잠열측정의 정밀도 향상)

  • Lee Yoonsuk;Peck Jong Hyeon;Kang Chaedong;Hong Hiki
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.17 no.3
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    • pp.223-231
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    • 2005
  • When test tubes for PCM with melting point lower than a room temperature are installed vertically as the T-history method proposes, there exists a temperature distribution in the longitudinal direction by natural convection, which lowers the precision of measured heat-of-fusion. The purpose of the present work is to improve the precision by arranging the test tubes horizontally, while maintaining the simplicity and convenience. Assuming that the amount of heat transfer is very small through the vapor space formed in the upper part of the tubes by volumetric change, the obtained value by the T-history method using the latent heat period bounded by two inflection points is in good agreement with that of the literature. Also, the scattering of measured values by the proposed method decreases markedly compared to that of vertical positioning.

Mapping the Concept of Modernism in Architecture -Functionalism, Formalism and Artistic Avantgardism- (근대건축의 개념에 대한 비판적 소고 -기능(술)주의, 형식주의, 예술주의와 전망-)

  • Lee, Sang-Hun
    • Journal of architectural history
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    • v.8 no.1 s.18
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    • pp.53-62
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    • 1999
  • Modernism in architecture is a very complex and contradictory phenomena. So much so that it has been defined in various ways throughout the history, depending on one's position in the cultural and historical circumstances. It is thus necessary to map out the various concepts of modernism and their relationships in order to have a more comprehensive understanding of modern architecture. This paper attempts to define the various positions as functionalism, formalism and artistic avant-gardism, and to trace their history from the early twentieth century to the present. The change of the concept of modernism from functionalism to artistic avant-gardism seems a logical process in the history of western modem culture. The tendency of contemporary architecture to be more abstract and self referential artistic practice reflects the fragmentation of modern culture and the separation of art and technology. The validity of this position, of course, depends on how one evaluates the role of modern art in the situation of modern culture. It could be viewed either negatively or positively. However, this position is problematic in that it disregards the fundamental differences between architecture and other arts and distanced architecture farther from its material base. Given this historical perspective on the concept of modernism, modernism in Korea should not viewed simply identical to the western modernism, nor should western modernism be imported uncritically. The characteristics of her modernization and their differences from the west should be considered, along with the different status and role of architecture in korean modern society.

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A Study on the Change of the Terms and the Structure of the Pungpanbu in the T-shaped Wooden Shrines in Royal Tombs in the Later Joseon Period (조선후기 왕릉 정자각의 풍판부 용어와 구조의 변화)

  • Lee, Sang-Myeong
    • Journal of architectural history
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    • v.26 no.1
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    • pp.105-116
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    • 2017
  • The purpose of this study is to comprehend the change of the terms and the structure of the Pungpanbu in the T-shaped wooden shrines in the later Joseon period through the Salleung-dogamuigwes. Following conclusions have been reached through the study. First, the terms in the Salleung-dogamuigwes were similar to Yeonggeon-dogamuigwes but timing difference was verified. The word about the frame of Pungpanbu was different from the current. Second, in accordance with the extended of Pungpanbu, the members of frame of Pungpanbu had been increased and it had been changed to the lattice. The members of Pungpanbu used as plan dimensions and the size of the members had been gradually increased. Third, the Pungpanbu had been extended to protect the side of T-shaped wooden shrines. At the same time, the range of Chukjungbang had been extended. This was the result of the efforts of the era to reduce the range of plaster. This affected the overall elevation change of T-shaped wooden shrines.