• Title, Summary, Keyword: 1971-2005

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A Policy Direction of Vessel Buyback Program for Coastal and Offshore Fisheries in Korea (우리나라 연근해어선감척사업의 정책방향에 관한 연구)

  • Pyo, Hee-Dong;Kwon, Suk-Jae
    • Ocean and Polar Research
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    • v.27 no.3
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    • pp.323-333
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    • 2005
  • The paper is to serve as a guide for deciding on a desirable direction for the vessel buyback program, reviewing their performance and economic effects from fish harvest reduction due to not reaching MSY. Compared with maximum willingness to pay for vessel buyback programs designed to avoid economic losses occurring as a result of overfishing, the portions of investment costs for buyback program are so small comparatively to the range of 0.32% to 12.19% at the annual base. The economic loss effects occurred in terms of the reduction of fishing harvest are comprehensively estimated at the present value of 30,877 billion won since 1971, and exceeded the revenues for fish harvests from 1999. In order to resole fish stocks through a vessel buyback program, this paper recommends that the yield should be reduced to less than the intrinsic growth rate. Otherwise, the buyback program policy eventually fails regardless of the temporal effect of benefits. This paper further argues that technical policy tools such as fishing grounds, fishing seasons, size of fish and minimum size of meshes should be effectively utilized.

A Trend of the Bathroom Planning of 30s Pyung Apartments (30평형대 아파트 욕실 공간의 변화추이)

  • Hwang, Yun-Jung;Shin, Kyung-Joo
    • Proceedings of the Korean Institute of Interior Design Conference
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    • pp.48-51
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    • 2005
  • The purpose of this study is to provide a basic study for a desirable bathroom planning of the 30s pyung apartments. This study explores the change of the bathroom planning and analyzes the bathroom plans of the existing apartments. The data are 927 case of the bathroom plans of the 30s pyung apartments constructed in Seoul and the new town between 1971-2003. Where 145,807 households live. In this study, a trend of the bathroom form, numble in the 30s pyung apartments are examined. For the better planning of the bathroom. factors like family size. life cycle, and manner of bathroom use should be analyzed in the future studies. The analysis of the dweller's consciousness, satisfaction, and the demands on the bathroom in 30s pyung apartments, and to give useful information on bathroom planning of 30s pyung apartments.

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A NOTE ON CONSTRUCTING $2^{n}3^1$ AND $2^{1}3^3$ DESIGNS WHEN LINEAR TERMS ARE ESSENTIAL

  • LIAU PEN-HWANG
    • Journal of the Korean Statistical Society
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    • v.34 no.2
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    • pp.141-151
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    • 2005
  • Under the assumption that the three-level factors are quantitative, the linear effects are taken more attention than the quadratic effects of the interaction terms. Webb (1971) presented some small incomplete factorial designs that are mixed two- and three-level designs with 20 or fewer runs. The designs provided the estimating linear-by-linear components of interactions between the three-level factors; moreover, they could also offer estimation of interactions that interest the experiments. Webb used ad hoc methods to find these plans; hence, there was still no unified structure to those experiments. In this paper, we develop the methods to construct the $2^{n}3^3$ and $2^{1}3^3$ designs. The designs constructed by these methods not only supply orthogonal estimates of all the main effects but also permit estimation of all the two-factor interactions not involving the quadratic effects. Furthermore, the designs we find are nearly orthogonal.

Dynamic Anti-Windup for Robot Systems with Friction

  • Yoon, S.S.;Yamada, Y.;Park, J.K.;Yoon, T.W.
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1966-1971
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    • 2005
  • Though several previous anti-windup techniques have been proposed, they are limited to linear systems or friction is not considered. Thus this paper proposes a compensation scheme for input-constrained robot systems with friction to cope with the windup phenomenon and shows its effectiveness by simulations. Given a feedback linearizing controller for a robot system designed without considering its input constraint, an additional dynamic compensator is proposed to account for the constraint. The dynamic anti-windup is based on the minimization of a reasonable performance index, and properties of the resulting closed-loop are presented.

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A Study on Comparison of Generalized Kappa Statistics in Agreement Analysis

  • Kim, Min-Seon;Song, Ki-Jun;Nam, Chung-Mo;Jung, In-Kyung
    • The Korean Journal of Applied Statistics
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    • v.25 no.5
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    • pp.719-731
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    • 2012
  • Agreement analysis is conducted to assess reliability among rating results performed repeatedly on the same subjects by one or more raters. The kappa statistic is commonly used when rating scales are categorical. The simple and weighted kappa statistics are used to measure the degree of agreement between two raters, and the generalized kappa statistics to measure the degree of agreement among more than two raters. In this paper, we compare the performance of four different generalized kappa statistics proposed by Fleiss (1971), Conger (1980), Randolph (2005), and Gwet (2008a). We also examine how sensitive each of four generalized kappa statistics can be to the marginal probability distribution as to whether marginal balancedness and/or homogeneity hold or not. The performance of the four methods is compared in terms of the relative bias and coverage rate through simulation studies in various scenarios with different numbers of raters, subjects, and categories. A real data example is also presented to illustrate the four methods.

Innovation in Giorgetto Giugiaro's Automobile Design (Giorgetto Giugiaro의 자동차디자인의 혁신성)

  • Lee, Myung-Ki
    • Archives of design research
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    • v.19 no.5
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    • pp.383-394
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    • 2006
  • In 2005, Giorgetto Giugiaro unveiled the Ferrari GG50 at the 50th anniversary celebration of his design career. Beginning his career at the age of 17, he is a master designer who has achieved design revolution by uniting creativity, design methodology, and technology. He has been awarded a number of international prizes for his exquisite achievements and reputation for car design. Carrozzeria of ITAL DESIGN, founded by Giugiaro, is a company whose ideas combine cutting-edge technology and high quality craftsmanship. Beginning in car design, ITAL DESIGN achieved a positive reputation internationally and, since 1999, has expanded even more rapidly under its new name, ITAL DESIGN-GIUGIARO. The owner of 12 affiliates worldwide, all service systems are buyer-oriented, ensuring the highest level of technical consulting. Beginning with the 1971 Alfa Romeo Alfasud, the 1st major project, more than 100 cars have been designed in the past 35 years, leading to the production or in million cars by major motor companies around the world. Giugiaro has focused on practical performance as well as external beauty in his car design, the best of which enter the mass market. With his philosophy of "I want to be the 1st customer of my design" Giugiaro design invites customer participation and input to meet their needs and demands. Free from the routine, typical image, Giugiaro design has raised the bar for creativity and thinking beyond traditional values and ideologies.

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Phonology and Minimum Temperature as Dual Determinants of Late Frost Risk at Vineyards (발아시기 정밀추정에 의한 포도 만상해 경보방법 개선)

  • Jung, Jea-Eun;Yun, Jin-I.
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.8 no.1
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    • pp.28-35
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    • 2006
  • An accurate prediction of budburst in grapevines is indispensable for vineyard frost warning system operations in spring because cold tolerance depends heavily on phonology. However, existing frost warning systems utilize only daily minimum temperature forecasts since there is no way to estimate the site-specific phonology of grapevines. A budburst estimation model based on thermal time was used to project budburst dates of two grapevine cultivars (Kyoho and Campbell Early), and advisories were issued depending on phonology as well as temperature. A 'warning' is issued if two conditions are met: the forecasted daily minimum temperature falls below $-1.5^{\circ}C$ and the estimated phonology is within the budburst period. A 'watch' is issued for a temperature range of -1.5 to $+1.5^{\circ}C$ with the same phonology condition. Validation experiments were done at 8 vineyards in Anseong in spring 2005, and the results showed a good agreement with the observations. This method was applied to the climatological normal year (1971-2000) to determine sites with high frost risk at a 30 m grid cell resolution. Among 608,585 grid cells constituting Anseong, 1,059 cells were identified as high risk for growing Kyoho and 2,788 cells for Campbell Early.

PHOTOMETRIC OBSERVATIONS AND LIGHT CURVE ANALYSIS OF BL ERIDANI (BL ERIDANI의 측광관측과 광도곡선 분석)

  • Han, Won-Yong;Yim, Hong-Suh;Lee, Chung-Uk;Youn, Jae-Hyuck;Yoon, Joh-Na;Kim, Ho-Il;Moon, Hong-Kyu;Byun, Yong-Ik;Park, Sun-Youp
    • Journal of Astronomy and Space Sciences
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    • v.23 no.4
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    • pp.319-326
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    • 2006
  • We present light curves of a short period binary system BL Eridani. The light curves were observed with VRI filters by a 50cm wide field robotic telescope at Siding Spring Observatory (SSO), equipped with a 2K CCD camera, which was developed by Korea Astronomy and Space Science Institute (KASI), and Yonsei University Observatory(YUO). The photometric observations were made on 6 nights by automatic operation mode and remote observation mode at SSO and KASI in Korea, respectively. We obtained new VRI CCD light curves and new 5 times of minima, and analyzed the light corves with the Wilson & Deviney (1971) binary 2005 version and derived the new photometric solutions. The mass ratio q=0.48 in this study shows different value with earlier investigators. According to the model analysis, it is considered that the BL Eri system is currently undergoing contact stage of the two binary components, rather than near-contact stage.

Characteristics of Precipitation and Temperature at Ulleung-do and Dok-do, Korea for Recent Four Years(2005~2008) (최근 4년간(2005~2008) 울릉도와 독도의 강수 및 기온 특성)

  • Lee, Young-Gon;Kim, Baek-Jo;Park, Gil-Un;Ahn, Bo-Young
    • Journal of Environmental Science International
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    • v.19 no.9
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    • pp.1109-1118
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    • 2010
  • Characteristics of precipitation and temperature in Ulleung-do and Dok-do were analyzed with hourly accumulated precipitation and mean temperature data obtained from Automatic Weather System(AWS) for latest four years(2005~2008). In Ulleung-do, total annual mean precipitation for this period is 1,574.4 mm, which shows larger amount than 1434.2 mm of whole Korean peninsula for latest 10 years(1999~2008) and 1,236.2 mm at Ulleung-do on common years(1971~2000), shows that the trend of precipitation gradually increases during the recent years. This amount is also 1.4 times larger than the total annual mean precipitation of 660.1 mm in Dok-do. Mean precipitation intensity(mm $h^{-1}$) at each time of a day in each month at Ulleung-do represents that the maximum values larger than $3.0\;mm\;h^{-1}$ were shown in May and on 0200 LST, whereas these were found in August and 0700 LST with $3.1\;mm\;h^{-1}$ in Dok-do. The difference of the precipitation amount and its intensity between Uleung-do and Dok-do is explained by the topological effect came from each covering area, and this fact is also identified from similar comparison of the precipitation characteristics for the islands in West Sea. The annual mean temperature of $14.0^{\circ}C$ in Dok-do is $1.2^{\circ}C$ higher than that of $12.8^{\circ}C$ in Ulleung-do. Trends of monthly mean temperature in both islands are shown to increase for the observed period.

GCMs Evaluation Focused on Korean Climate Reproducibility (우리나라 기후 재현성을 중심으로 한 GCMs 평가)

  • Choi, Daegyu;Lee, Jinhee;Jo, Deok Jun;Kim, Sangdan
    • Journal of Korean Society on Water Environment
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    • v.26 no.3
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    • pp.482-490
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    • 2010
  • In this study 17 GCMs' simulations of late 20th century climate in Korea are examined. A regionally averaged time series formed by averaging the temperature and precipitation values at all the Korean grid points. In order to compare general circulation models with observations, observed spatially averaged temperature and precipitation is calculated using 24 stations for 1971 to 2000. The annual mean difference between models and observed data are compared. For temperature, most models have a slight cold bias. The models with least bias in annual average temperature are NIES(MIROC3.2 hires), GISS(AOM) and INGV(SXG2005). For precipitation, almost all models have a dry bias, and for some the bias exceeds 50%. Models with lowest bias are NIES(MIROC3.2 hires), CCCma(CGCM3-T47) and MPI-M(ECHAM5-OM). The models' simulated seasonal cycles show that for temperature, CSIRO(Mk3.0) has the best followed by CCCma(CGCM3-T47) and CCCma(CGCM3-T63), and for precipitation, NIES(MIROC3.2 hires) has the best followed by CSIRO(Mk3.0) and CNRM(CM3). In the assessment using Taylor diagram, CCCma(CGCM3-T47) ranks the best for temperature, and NIES(MIROC3.2 hires) ranks the best for precipitation.