• Title/Summary/Keyword: historical change

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Future Change Using the CMIP5 MME and Best Models: II. The Thermodynamic and Dynamic Analysis on Near and Long-Term Future Climate Change over East Asia (CMIP5 MME와 Best 모델의 비교를 통해 살펴본 미래전망: II. 동아시아 단·장기 미래기후전망에 대한 열역학적 및 역학적 분석)

  • Kim, Byeong-Hee;Moon, Hyejin;Ha, Kyung-Ja
    • Atmosphere
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    • v.25 no.2
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    • pp.249-260
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    • 2015
  • The changes in thermodynamic and dynamic aspects on near (2025~2049) and long-term (2075~2099) future climate changes between the historical run (1979~2005) and the Representative Concentration Pathway (RCP) 4.5 run with 20 coupled models which employed in the phase five of Coupled Model Inter-comparison Project (CMIP5) over East Asia (EA) and the Korean Peninsula are investigated as an extended study for Moon et al. (2014) study noted that the 20 models' multi-model ensemble (MME) and best five models' multi-model ensemble (B5MME) have a different increasing trend of precipitation during the boreal winter and summer, in spite of a similar increasing trend of surface air temperature, especially over the Korean Peninsula. Comparing the MME and B5MME, the dynamic factor (the convergence of mean moisture by anomalous wind) and the thermodynamic factor (the convergence of anomalous moisture by mean wind) in terms of moisture flux convergence are analyzed. As a result, the dynamic factor causes the lower increasing trend of precipitation in B5MME than the MME during the boreal winter and summer over EA. However, over the Korean Peninsula, the dynamic factor causes the lower increasing trend of precipitation in B5MME than the MME during the boreal winter, whereas the thermodynamic factor causes the higher increasing trend of precipitation in B5MME than the MME during the boreal summer. Therefore, it can be noted that the difference between MME and B5MME on the change in precipitation is affected by dynamic (thermodynamic) factor during the boreal winter (summer) over the Korean Peninsula.

Estimation of Historical Shorelines on a Coastal Reclaimed Land (II) : Shoreline Change Analysis (해안 매립지에서 과거 해안선의 산정 (II): 해안선변화 분석)

  • Kim, Baeck-Oon;Lee, Chang-Kyung
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.21 no.5
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    • pp.380-390
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    • 2009
  • This study was conducted as a part of investigating pre-reclamation shorelines from aerial photographs to estimate coastal land area at reclaimed lands (Anjeong industrial complex, Myeongji residental complex, and Noksan industrial complex), southeastern coast of Korea. To assess how the shorelines were suitable for the calculation of coastal lands, we constructed shoreline change data. Secondary ground control points were used to accomplish triangulation for old aerial photographs. Two kinds of shorelines were mapped; one was the shoreline based on approximately highest high water level (AHHWL) and the other was the high water line based on wet/dry signiture. These shorelines were consistent at artificial coast. Shoreline change data were built with a variety of levels of error due to detailed differences in the photograph scale, quality of image, type of ground control point and type of shoreline. Thus assessment of the pre-reclamation shorelines at the level of qualitative analysis for the trend of shoreline changes was satisfactory. Most of shoreline changes before reclamation in this study were associated with coastal development. Investigation of shoreline attributes in relation to aerial photographs allowed us to understand the shoreline changes.

Analyses on Type and Characteristics of Urban Regeneration for Establishment of Urban Identity (도시정체성 확립을 위한 도시재생의 유형 및 계획특성 분석)

  • Lee, Joo-Hyung;Seo, Eui-Kweon;Lim, Jong-Hyun
    • KIEAE Journal
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    • v.9 no.5
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    • pp.85-96
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    • 2009
  • This study analyzed a characteristic by types of urban regeneration helping the establishment of urban identity under social condition change. It will be foundation of sustainable urban development with strategy that secures world-wide competitive power. For this, sample cases that established identity from urban regeneration were reviewed about the main subject and the supporting subject in business side and hardware, software, system, and finance in design factors. 4samples each in inheritance intensification type and change creation type were selected and analyzed. The result said it is most effective to establish urban identity when inheritance intensification type is the private-centered for urban regeneration. And it is better to do the project that the main subject and the supporting subject are taken by the private or the private-leading partnership. It is necessary to manage the region and plan events with software design factors more than hardware design factors. In addition, for urban identity, it was found to be desirable to utilize and preserve fully current resources such as historical scenery and activate the communities than making new facilities. On the contrary, the project based on change creation type needs to be under the public management with innovative idea. Also, when it comes to design factors, facilities related to culture and art and community spaces should open and run actively. It is important for the region to improve its image by New design style such as TOD. In software side, it is important to manage the region by monitoring about urban regeneration business and solve social mix and employment problem. On the other hand, in terms of system and administration, both types don't show a difference in urban identity establishment, since it is same that both should make partnership and get a support of subsidy to be most effective.

A Historical Research on Improved Changes of Korean Traditional Costume (한복개량에 대한 사적 고찰)

  • Koo, Mi-Ji
    • The Journal of Natural Sciences
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    • v.10 no.1
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    • pp.123-131
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    • 1998
  • This research was investigated the improved changes of Korean traditional costume after introducing the western costumes in this society. For this study microfilms of Chosun llbo, the popular newspaper since 1920s, and costume magazines for 1950s and 1960s were examined. The periods of the improved changing of Korean traditional costume were divided by the characteristics of qualitative and quantitative changes. Those were two, such as passive period and active period of change. At passive period, the change was not far from the original from of traditional costume and it was limited to the waist of skirt, length and width. But at active period, there was distinctive change from the previous period. Active period is divided by 2 sub-period again. In 1950s, the concept of darts of western costume was accepted to Korean costume and there was the western clothing for everyday costume, the characteristics of Korean costume were added to the base of the western clothing. It was named 'Arirang dress'. Original Korean costume had worn for special occasions since late 1950s.

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A Study on the Position and Preservation Situation of Gaeksa·Dongheon in Choongcheong Suyeong at the end Joseon Dynasty (한말 충청수영 객사·동헌의 위치와 존치상태 연구)

  • Kim, Myung-Rae
    • Journal of architectural history
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    • v.27 no.2
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    • pp.101-112
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    • 2018
  • The study on the government office building in Chungcheong Suyeong(忠淸水營) is very rare. How were the Gaeksa(客舍) and Dongheon(東軒) which are representative government office buildings in Suyeong, maintained and what was the aspect of it, while passing through the upheaval period of the end of Joseon(朝鮮)? And where was the original place and was there any change in use? It is so regrettable that these subjects were not figured out yet. So I thought it is very important task to figure out its actual aspect by investigating the maintain state of the Gaeksa and Dongheon and the change of their places. So this study examined the related historical records and, based on it, analyzed "Ocheon GoonJi(鰲川郡誌)" in various view points. Through this analysis, this study could figured out the maintain aspect of the gaeksa and dongheon and the change of their places, and be able to deduce the other change of the government office building. This study could assume the places of each government office buildings by comparing this investigated result and the analyzed result of the original cadastral map in various view points. As the result of the study done by this method, this study confirmed the maintain state of the Gaeksa and Dongheon in Chungcheong Suyeong while passing through the upheaval period of the end of Joseon. And this study figured out the places of the Gaeksa and Dongheon, and be able to confirm their places by the lot number on the original cadastral map. Along with this, this study could estimate Jo(趙) family's confliction with the residents at that time by verifying the lot numbers of the Sapaeji(賜牌地) which this family received from the government. And among the names of the government office buildings, for the Jangkyocheong(將校廳) which is in dispute because of the name, this study figured out that the author of "Ocheon GoonJi" made a mistake in writing Dongheon.

Scheduling Generation Model on Parallel Machines with Due Date and Setup Cost Based on Deep Learning (납기와 작업준비비용을 고려한 병렬기계에서 딥러닝 기반의 일정계획 생성 모델)

  • Yoo, Woosik;Seo, Juhyeok;Lee, Donghoon;Kim, Dahee;Kim, Kwanho
    • The Journal of Society for e-Business Studies
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    • v.24 no.3
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    • pp.99-110
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    • 2019
  • As the 4th industrial revolution progressing, manufacturers are trying to apply intelligent information technologies such as IoT(internet of things) and machine learning. In the semiconductor/LCD/tire manufacturing process, schedule plan that minimizes setup change and due date violation is very important in order to ensure efficient production. Therefore, in this paper, we suggest the deep learning based scheduling generation model minimizes setup change and due date violation in parallel machines. The proposed model learns patterns of minimizing setup change and due date violation depending on considered order using the amount of historical data. Therefore, the experiment results using three dataset depending on levels of the order list, the proposed model outperforms compared to priority rules.

Spatio-Temporal Summer Rainfall Pattern in 2020 from a Rainfall Frequency Perspective (2020년 여름철 강우의 시공간적 특성 분석: 빈도해석을 중심으로)

  • Kim, Yong-Tak;Park, Moonhyung;Kwon, Hyun-Han
    • Journal of Korean Society of Disaster and Security
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    • v.13 no.4
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    • pp.93-104
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    • 2020
  • Climate change has emerged as a social issue, and efforts have been made to overcome it in various ways. However, climate change due to global warming is likely to accelerate further than we expected, and the associated damage is also likely to increase. This tendency is expected to continue in the future, leading to difficulties for the existing water resource management system based on historical data. The precipitation in 2020 caused property damage and loss of life due to the extreme rainfall exceeding the design rainfall with the very unusual prolonged rainy days. With this 2020 flood, we should no longer be passive in managing flood risk due to uncertainties in climate change.

Climate Change Impact Analysis of Urban Inundation in Seoul Using High-Resolution Climate Change Scenario (고해상도 기후시나리오를 이용한 서울지역 배수시스템의 기후변화 영향 분석)

  • Lee, Moon-Hwan;Kim, Jae-Pyo;Bae, Deg-Hyo
    • Journal of Korea Water Resources Association
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    • v.48 no.5
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    • pp.345-355
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    • 2015
  • Climate change impact on urban drainage system are analyzed in Seoul by using high-resolution climate change scenario comparing 2000s (1971~2000) with 2020s (2011~2040), 2050s (2041~2070) and 2080s (2071~2100). The historical hourly observed rainfall data were collected from KMA and the climate change scenario-based hourly rainfall data were produced by RegCM3 and Sub-BATS scheme in this study. The spatial resolution obtained from dynamic downscaling was $5{\times}5km$. The comparison of probability rainfalls between 2000s and 2080s showed that the change rates are ranged on 28~54%. In particular, the increase rates of probability rainfall were significant on 3, 6 and 24-hour rain durations. XP-SWMM model was used for analyzing the climate change impacts on urban drainage system. As the result, due to the increase of rainfall intensities, the inundated areas as a function of number of flooded manhole and overflow amounts were increasing rapidly for the 3 future periods in the selected Gongneung 1, Seocho 2, Sinrim 4 drainage systems. It can be concluded that the current drainage systems on the selected study area are vulnerable to climate change and require some reasonable climate change adaptation strategies.

Prediction of the spatial distribution of suitable habitats for Geranium carolinianum under SSP scenarios (SSPs 시나리오에 따른 미국쥐손이 적합 서식지 분포 예측)

  • Oh, Young-Ju;Kim, Myung-Hyun;Choi, Soon-Kun;Kim, Min-Kyeong;Eo, Jinu;Yeob, So-Jin;Bang, Jeong Hwan;Lee, Yong Ho
    • Ecology and Resilient Infrastructure
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    • v.8 no.3
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    • pp.154-163
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    • 2021
  • This study was carried out to identify the factors affecting the distribution of suitable habitats for Geranium carolinianum, which was naturalized in South Korea, and to predict the changes of distribution in the future. We collected occurrence data of G. carolinianum at 68 sites in South Korea, and applied the MaxEnt model under climate change scenarios (SSP2-4.5, and SSP5-8.5). Precipitation seasonality (bio15), mean temperature of warmest quarter (bio10), and mean temperature of driest quarter (bio09) had high contribution for potential distribution of G. carolinianum. According to climate change scenarios, high suitable habitats of G. carolinianum occupied 6.43% of the land of South Korea in historical period (1981~2010), and 92.60% under SSP2-4.5, and 98.36% undr SSP5-8.5 in far future (2071~2100).

A Study on the Founding of a New View Point on Architectural Ornaments In 19th Century -Focused on the G.Semper's [Bekleidungstheorie]- (19세기 새로운 장식관의 형성에 관한 연구-G. 젬퍼의 피복론을 중심으로-)

  • 조영배;윤도근
    • Korean Institute of Interior Design Journal
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    • no.16
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    • pp.168-174
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    • 1998
  • In the Western Civilization you can clearly see the change in the architectural system. In the 19th Century many of arcitectural style resurrected in the appearance of style revival. And each of the Style's appropriateness and exactness were very complicatedly discussed. After the middle of 19th Century a series of morality movement which showed an expectation for a historical revival started to show declining atmosphere. To architects at the periods more universal formation seeking and new surpassing style pursuing logic has exacted which care from very different from the past During this period a question were brought up about architecture ornamental rightness and appropriateness. As each of the architects had a saying about the ornament was recognized as important part of architect. On this bases this study's purpose is finding out whst is the maeaning and content of G.Semper's "Bekleidungstheorie"

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