• Title/Summary/Keyword: Change analysis

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Economic Analysis of Climate Change to Establish Effective Adaptation Policies (효율적 기후변화 적응대책 수립을 위한 기후변화의 경제학적 분석)

  • Chae, Yeo-Ra;Youm, Yoo-Na
    • Journal of Korean Society of Environmental Engineers
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    • v.32 no.9
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    • pp.818-829
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    • 2010
  • This paper provides an extensive overview of the literature on economic analysis of climate change, and thereby provides direction for effective adaptation policies for Korea. The paper first gives a comprehensive look on the estimation of economic costs of climate change as given by various research. Following, the paper examines the choice of measures that are used in the economic analysis of climate change by different sectors, including agriculture and human health. The paper also compares and discusses the various analytic results with a focus on Korea in order to shed light on where Korea stands. Finally, the paper examines current literature on adaptation polices in response to climate change, and by examining how such research has evolved and deepened with time, provide directions for the research on adaptation policies for Korea.

A Study of the Stream Specific by River Width's Downsizing & Extension (하천폭의 국부적 축소 및 확대에 따른 수리특성 연구)

  • Choi, Han-Kuy;Kim, Ju-Suk;Baek, Hyo-Sun
    • Journal of Industrial Technology
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    • v.27 no.B
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    • pp.229-233
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    • 2007
  • This research investigated the way of generating the flowing of water in case of artificial fluctuation of river width by the unidimensional numerical analysis in order to reconstruct vertical and expanse features of flowing, and the problem of existing numerical analysis in accordance with local enlargement and reduction of river through hydraulic model experiments with results of numerical analysis. The result revealed that when the local section change in the same river is exist, it showed 0.93m in the case of no change of local section in the hydraulic model experiments and numerical analysis, however, it presented 1.645m on the occasion of local section changes in the hydraulic model experiments and numerical analysis. In other words, there was a significant difference in the existing numerical analysis, when there was a local section change. As a result of the experimental section for the enlargement and reduction of local river width, due to the sensitive change for fluctuation of flood discharge, there was a significant difference between numerical analysis and hydraulic model experiments. In addition, the result of comparison between the enlargement and reduction of local river width confirmed that the result of numerical analysis with hydraulic model experiments showed larger generation of deviation in case of enlargement of section than in case of reduction of section.

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Advanced Congestion Control Algorithm Using Change of Queue Length in ATM ABR Service (ATM ABR 서비스에서 큐 길이 변화를 이용한 개선된 폭주 제어 알고리즘)

  • 김체훤;강현철;곽지영;남지승
    • Proceedings of the IEEK Conference
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    • 2000.06c
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    • pp.109-112
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    • 2000
  • The EPRCA(Enhanced Proportional Rate Control Algorithm) is one of the explicit rate control algorithm recommended by the ATM forum. EPRCA algorithm is using only two threshold to buffer change is not considered for calculating ER value. In this paper to cover the shortage, two more variables are added for considering increase of buffer quantity. So calculating proper ER would avoid before getting into the congestion situation. To analysis the affect, EPRCA and proposed algorithm are compared through simulation by analysis of change of buffer length and ACR change

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A Preliminary Study on Change Management Factors through Analysing Development Phase of Construction IT System (건설 IT 시스템 발전단계분석을 통한 변화관리 요인 기초 연구)

  • Kim, Haneol;Lee, Dongheon;Lim, Hyoungchul
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.04a
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    • pp.214-215
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    • 2022
  • This study analyzed the development stage and change management necessity of the construction IT system through existing research and literature review, and used WordCloud, one of the text mining techniques, to analyze current construction trends and major issues. The necessity of change management is derived by using existing research literature and construction-related social issues as analysis data.

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Change of Porosity and Water Vapour Transport Properties of Wool Fabrics by the Change of Moisture Regain and Fabric Structure (모직물의 수분율 변화와 구조에 따른 기공도 및 수분전달 특성변화)

  • 김동옥;나미희;김은애
    • Journal of the Korean Society of Clothing and Textiles
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    • v.23 no.6
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    • pp.820-828
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    • 1999
  • The purpose of this study was to investigate the changes of pore area and water vapour transport by the changes of moisture regain and fabric structure of wool fabrics, As specimens 4 worsted wool fabrics were used. The pore area were measured by image analysis method and dinamic vapour transport and water reisitance was determined by clothing-environment-body modelling system. The pore area was changed by the moisture regain of wool fabrics. The change of pore area was influenced by the yarn twist thread count and cover factor and the weave type. The water vapour transport was changed by the moisture regain. The change of water vapour transport was influenced by the change of pore aree which was determined by image analysis.

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NUMERICAL ANALYSIS OF THERMAL FLOW OF CABIN INTERIOR AND DE-ICING ON AUTOMOBILE GLASS (자동차 내부 열유동해석 및 전방유리면의 해빙 전산해석)

  • Song D. W.;Park W. G.;Jang K. L.
    • 한국전산유체공학회:학술대회논문집
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    • 2005.10a
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    • pp.75-80
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    • 2005
  • The present work was undertaken to numerically analyze the defrosting phenomena of windshield glass. In order to analysis the phase change from frost to water on windshield glass by discharging hot air from a defroster nozzle, the flow and the temperature field of the cabin interior, the heat transfer through the windshield glass, and the phase change of frost should be solve simultaneously. In the present work, the flow field was obtained by solving 3-D incompressible Navier-Stokes equations, and the temperature field was computed from the incompressible energy equation. The phase change process was solved by the enthalpy method. For the code validation, the temperature and the phase change of the driven cavity were calculated. The calculation showed a good agreement with other numerical results. Then, the present code was applied to the defrosting problem of a real automobile, and a good agreement with the experimental data was also obtained.

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Neighborhood Correlation Image Analysis for Change Detection Using Different Spatial Resolution Imagery

  • Im, Jung-Ho
    • Korean Journal of Remote Sensing
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    • v.22 no.5
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    • pp.337-350
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    • 2006
  • The characteristics of neighborhood correlation images for change detection were explored at different spatial resolution scales. Bi-temporal QuickBird datasets of Las Vegas, NV were used for the high spatial resolution image analysis, while bi-temporal Landsat $TM/ETM^{+}$ datasets of Suwon, South Korea were used for the mid spatial resolution analysis. The neighborhood correlation images consisting of three variables (correlation, slope, and intercept) were evaluated and compared between the two scales for change detection. The neighborhood correlation images created using the Landsat datasets resulted in somewhat different patterns from those using the QuickBird high spatial resolution imagery due to several reasons such as the impact of mixed pixels. Then, automated binary change detection was also performed using the single and multiple neighborhood correlation image variables for both spatial resolution image scales.

An Empirical Analysis on Consumer Damage Cases of Clothing Products (의류제품의 소비자 피해 사례에 대한 실증분석)

  • Park, Younghee
    • Journal of Fashion Business
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    • v.18 no.1
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    • pp.149-163
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    • 2014
  • The purpose of this study is to investigate and analyze the actual conditions of consumer damage occuring in the use of clothing products. The data used for analysis included 470 cases, which were deliberated by requesting consumer disputes deliberation at the consumer consultation room of Masan YWCA at the Kyeongsangnamdo Consumer Life Center belonging to the Kyeongnam provincial office. The disputes regarding the clothing products insisted that consumers suffered damage for the period from March, 2011 to June, 2013. The data processing was carried out by SPSS 14 and the statistics techniques used went through a cross tabulation analysis and ${\chi}^2$-test. The results are as follows. The difference in the analysis result of purchase path and material as to kinds of clothing products showed a significant difference. The damage types of clothing products were classified into five types: change of color, change of style, change of surface and touch, breakage of subsidiary materials, and others. The damaged clothing products showed a difference for damage frequency according to the items of clothing products; in particular, damage frequency for change of color appeared high. The damage contents of change of color were identified as metachromatism, discoloration and yellowing, stain occurrence, and decolorization. The damage responsibility for these clothing products appeared to be various as to clothing items, but was higher at dry cleaners and manufacturers.

Regional Division of Korea by Precipitation Days and Annual Change Pattern (강수일과 그 연변화형에 의한 한국의 지역구분)

  • Park, Hyun-Wook
    • Journal of Environmental Science International
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    • v.4 no.5
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    • pp.1-1
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    • 1995
  • An attempt was made to study the subdivision of Korea by the annual amount and the annual change pattern of monthly precipitation days(that is one of the important elements of the precipitation characteristics), using the mean values for the years 1961-1990 at the 68 stations. The amplitudes of annual change were normalized and using these values, the principal component analysis was applied to determine the annual change patterns. The results show that they are expressed by the combinations of the three change patterns in almost whole regions of Korea. As a result,the annual change pattern of precipitation days in Korea is classified into 8 types from A to e,in detail, 36 types from A0 to e$\circled2$.And regional division of precipitation days in Korea is divided into 13 regions from I a to IIIC,into detail, 41 regions from I no to IIICl.

Regional Division of Korea by Precipitation Days and Annual Change Pattern (강수일과 그 연변화형에 의한 한국의 지역구분)

  • 박현욱
    • Journal of Environmental Science International
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    • v.4 no.5
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    • pp.387-402
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    • 1995
  • An attempt was made to study the subdivision of Korea by the annual amount and the annual change pattern of monthly precipitation days(that is one of the important elements of the precipitation characteristics), using the mean values for the years 1961-1990 at the 68 stations. The amplitudes of annual change were normalized and using these values, the principal component analysis was applied to determine the annual change patterns. The results show that they are expressed by the combinations of the three change patterns in almost whole regions of Korea. As a result, the annual change pattern of precipitation days in Korea is classified into 8 types from A to e, in detail, 36 types from A0 to e$\circled2$.And regional division of precipitation days in Korea is divided into 13 regions from I a to IIIC, into detail, 41 regions from I no to IIICl.

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