• Title/Summary/Keyword: absolute space

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An Adverse Social Welfare Effect of Quadruply Gainful Trade

  • Stark, Oded;Kosiorowski, Grzegorz
    • East Asian Economic Review
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    • v.24 no.3
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    • pp.207-235
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    • 2020
  • Acknowledging that individuals dislike having low relative income renders trade less attractive when seen as a technology that integrates two economies by merging separate social spheres into one. We define a "trembling trade" as a situation in which gains from trade are less than losses in relative income, with the result that global social welfare is reduced. We show that a "trembling trade" can arise even when trade is more gainful in four ways: through trade the absolute income of everyone increases, the income gap in both economies is reduced, as is the income gap between the trading economies. However, trade brings populations, economies, or markets that were not previously connected closer together in social space. As a consequence, separate social spheres merge, and people's social space and their comparators are altered. Assuming that people like high (absolute) income and dislike low relative income, the aggregate increase in unhappiness caused by the trade-induced escalation in relative deprivation can result in a negative overall impact of trade on (utilitarian-measured) social welfare, if the absolute income gains are not large enough to mitigate the relative income losses.

The Expression of Computer Graphic Movement by The Phenomenon in Motion of Center of Mass at A Collision of Bodies (물체의 충돌 시 질량 중심의 위치이동 효과의 컴퓨터그래픽 표현)

  • 정병태
    • Journal of the Korea Computer Industry Society
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    • v.2 no.6
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    • pp.853-858
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    • 2001
  • When an absolute elastic collision occurs between a motion body and the another body inside a closed space, according to the current physical law and thus a computer graphical expression, it is defined that the center of mass of the closed space is not moved. This paper defines a physical law which includes a minor facts of the center of mass of a closed space moves during an absolute elastic collision occurs between a motion body and another body inside a closed space. The law defined in this paper has been verified using approximate lab equipments, and using this, graphical expression models and mathematical expressions for an absolute elastic collision between two bodies inside a closed space are del ed. When the minor effects of the center of mass moves is applied to the multi-body dynamic simulation program or haptic program, more accurate motion could be expressed. This definition can also be applied to an animation movie or other graphical motion expression for more realistic expression.

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Absolute Configuration of Di-(2-Picolyl) sulfur Dichloro Zinc(II) with an Enantiomorphic Space Group $P4_12_12$ (Enantiomorphic 공간군 $P4_12_12$을 갖는 Di-(2-Picolyl) sulfur Dichloro Zinc(II)의 Absolute Configuration)

  • Choi Ki-Young;Lee Han-Hyoung;Kim Min-Hee;Whang Min-Ah;Kang Sang Ook;Son Ho-Jin;Son Ki-Chul;Han Won-Sik;Suh Il-Hwan
    • Korean Journal of Crystallography
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    • v.16 no.1
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    • pp.21-29
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    • 2005
  • The crystal structure of an enantiomeric compound di-(2-picolyl)sulfur dichloro zinc(II), $C_{12}H_{12}N_2SCl_2Zn$, could be elucidated with two space groups $P4_12_12\;and\;P4_32_12$. However, its absolute configuration with the space group $P4_12_12$ was confirmed by means of the effect of anomalous dispersion.

The Near-IR TRGB Magnitude and Distance Modulus to NGC 185

  • Sohn, Y.J.;Kang, A.;Han, W.;Park, J.H.;Kim, H.I.;Kim, J.W.;Shin, I.G.;Chun, S.H.
    • Journal of Astronomy and Space Sciences
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    • v.25 no.3
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    • pp.245-248
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    • 2008
  • We determined values of distance modulus to nearby dwarf galaxy NGC 185 from the Tip of Red-Giant Branch (TRGB) method. Apparent magnitudes of the TRGB are estimated from the near-infrared JHK luminosity functions (LFs) of the resolved giant branch stars. Theoretical absolute magnitudes of the TRGB in near-infrared bands have been extracted from the Yonsei-Yale isochrones. The observed apparent and theoretical absolute magnitudes of the TRGB provide values of distance modulus to NGC 185 as (m - M) = $23.39{\pm}0.14$, $23.23{\pm}0.22$, and $23.27{\pm}0.26$ for J,H, and K bands, respectively. Distance modulus in bolometric magnitude is also derived as (m - M) = $23.62{\pm}0.12$.

Infrared Space Missions in Korea for the Astronomical Research

  • Jeong, Woong-Seob
    • The Bulletin of The Korean Astronomical Society
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    • v.46 no.1
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    • pp.27.2-27.2
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    • 2021
  • The unknown excess emission in the near-infrared is thought to be related to the evolution of galaxies in the early epoch of Universe. Due to its extremely faint brightness, it can be observed only in space. Many infrared space missions have been tried to trace the origin of the Cosmic Infrared Background through the measurement of its absolute brightness and its spatial fluctuation. In addition, the infrared observations can address questions ranging from the origin of first galaxies in the Universe to the formation of stars. I will overview the Korean infrared space missions and introduce the status of the recent international collaboration mission, SPHEREx.

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Development of 3D absolute displacement monitoring system and its application at the stage of tunnel construction (터널 시공 중 3차원 절대변위 계측시스템의 개발과 적용)

  • Bang, Joon-Ho;Kim, Ki-Young;Jong, Yong-Hun
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.9 no.3
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    • pp.229-240
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    • 2007
  • The 3D absolute displacement monitoring system has been developed to analyze the tunnel convergence measured under construction of underground structures and to manage effectively the measured data. The system is comprised of the total station, the anchor-typed target pin and the 3D absolute displacement measurement and management program. In this paper, the types and specifications of the 3D total station were presented. The anchor-typed target pin, an improved model of traditional one, was developed and its sightable distance and measurement accuracy were checked by field tests. Also a 3D absolute displacement measurement and management program, TEMS 3D, was developed to provide some analysis tools including the trend and influence lines. L/C ratio, S/C ratio and the like. The developed system was applied the construction stage of a railway tunnel for testing purpose. It is verified that the developed system is capable of predicting weak zones ahead of tunnel face by comparing with results of TSP (Tunnel Seismic Prediction) survey.

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Prediction of Ground Condition Changes Ahead of Tunnel Face Using Three-Dimensional Absolute Displacement Analysis (터널 3차원 절대변위 해석기법을 이용한 막장전방지반 예측)

  • Bang, Joon-Ho;Han, Il-Young
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.8 no.2
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    • pp.101-113
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    • 2006
  • Arching effect occurs around the unsupported excavation surface near to tunnel face when a tunnel is excavated in a stable rock mass. If a weak fracture zone exists in front of tunnel face, a displacement occurs between tunnel face and weak fracture zone due to stress concentration. If three-dimensional absolute coordinates (longitudinal, transverse, vertical direction) is measured at tunnel face by geodetic method, the ground change in front of the tunnel face can be predicted by analysing three-dimensional absolute displacement. The purpose of this study is to verify the analysis method of three-dimensional absolute displacement by comparing the trend of displacement ratio at crown and sidewall of tunnel and the influence line/trend line of crown settlement compared with TSP results in the same section.

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The Development of a program based on Microsoft Excel to Calculate the Orientation and 3-Dimensional Coordination for educational purpose (엑셀기반의 교육용 표정 및 3차원 위치계산 프로그램 개발)

  • 이영진;차상헌
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2003.10a
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    • pp.211-218
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    • 2003
  • The purpose of this study is to analyze the interior orientation, relative orientation, absolute orientation, space intersection, space resection, computing the orientation parameter, 3-dimensional coordinates by using the EXCE for educational purpose.

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