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Nucleon form factors in the nuclear medium
Park, Chanyong,Lee, Jung Hun World Scientific Publishing Company 2018 International Journal of Modern Physics A Vol.33 No.2
<P>By using the AdS/CFT correspondence, we investigate various form factors between nucleons and mesons in a nuclear medium. In order to describe a nuclear medium holographically, we take into account the thermal charged AdS geometry with an appropriate IR cutoff. After introducing an anomalous dimension as a free parameter, we investigate how the nucleon’s mass is affected by the change of the anomalous dimension. Moreover, we study how the form factors of nucleons rely on the properties of the nuclear medium. We show that in a nuclear medium with different numbers of proton and neutron, the degenerated nucleon form factor in the vacuum is split into four different values depending on the isospin charges of nucleon and meson.</P>
International Comparisons of Income Inequality and Welfare in the 1980s
PARK, Chanyong 이화여자대학교 국제통상협력연구소 2012 Asian International Studies Review Vol.13 No.2
The main purpose of this paper is to compare the income inequality and welfare levels between countries selected on a worldwide basis in the 1980s. As analytical tools, Lorenz curves, the Gini coefficients and generalized Lorenz curves are used. Implicit in our analysis is the presumption that welfare is a function of the "size" of total income and distributional equality. This study makes it possible to observe the welfare levels of the selected countries by combining real GDP per capita with income decile. It thus contributes to increasing our understanding of household income inequality and welfare levels in the 1980s. Data for this study is from the "Households Income and Expenditure Statistics, 4th edition" (HIES), one of a series published by the International Labour Organization.
Quantum correlation in quark–gluon medium
Park Chanyong,Lee Jung Hun 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.82 No.1
We study the thermodynamics and quantum correlations of the string cloud geometry whose feld theory dual is the quark– gluon medium. We found the novel universality of the entanglement entropy frst law in the high quark density limit. We also showed that a correlation function generally decreases as the entanglement entropy of the background medium increases due to the screening efect of the background. We study the UV and IR efects of the medium on phase transition behaviour observed in the holographic mutual information using both perturbative and numerical computations. Moreover, by numerical computation, we show that in the IR region the critical length obtained from the mutual information behaves similar to the correlation length of the two-point function.
원심모형실험을 이용한 PBD 공법이 적용된 연약지반 거동 분석
박찬영 ( Chanyong Park ),이승주 ( Seungjoo Lee ),문범수 ( Bumsoo Moon ),스레스 ( Chaulagain Suresh ),김용성 ( Yongseong Kim ) 한국농공학회 2022 한국농공학회 학술대회초록집 Vol.2022 No.-
최근 국토 균형 발전에 따른 대규모 토목구조물들의 건설이 급증함에 따라 연약지반을 포함한 국토의 효율적인 이용이 요구되고 있으나 연약지반이 가진 지반공학적 취약점들로 인하여 구조물 시공에 많은 어려움을 겪고 있다. 이러한 연약지반을 안정화하기 위한 대표적인 공법 중 하나는 기존의 불안정한 흙을 안정적인 재료로 치환하는 것이지만 비용적 부담이 크기에 연약지반을 개량하는 공법에 관한 연구가 많이 이루어지고 있다. 본 연구에서는 원심모형실험을 이용하여 연약지반 개량공법 중 하나인 Plastic Board Drain(PBD)이 설치된 연약지반의 거동을 고찰하였다. PBD가 설치된 지반과 원지반을 비교하기 위해 단면을 축조하고, 저수지를 축조하여 침하량 및 간극수압 특성을 분석하였다. 본 연구를 통해 연약지반에 설치되는 저수지 축조 시 PBD 공법을 적용하여 시공성을 향상할 수 있음을 확인하였다.
朴讚用(Park, Chanyong),金振郁(Kim, Geneuhc) 한국재정학회(구 한국재정·공공경제학회) 1997 재정논집 Vol.12 No.1
This paper has dealt with government interventions by taxation and transfers in an economy of which individuals’ utility functions are interdependent by consumption externalities. An individual’s utility is influenced by other’s consumption behaviour when the consumption externalities have taken place. The paper has highlight a case of which the rich’s (or the poor’s) consumption augmentation bring on reducing the poor’s (or the rich’s) utilities, that is, the rich and the poor are reciprocally malevolent. Optimal taxation and transfers on the standpoint of impartial government have been studied by setting up such case. Also, the most desirable scheme for reducing income inequality and increasing economic efficiency, has been explored through the comparative static analysis. As the result, the program for enhancing the poor’s marginal productivities has been proved as the most effective to minimize malcontentment of the both classes (minimal fiscal extortion from the reluctant rich and maximal compensation for the poor), improve income distribution and sustain economic efficiency under the malevolent situation between the rich and the poor.
글로벌 3강과 국제경쟁력 비교분석을 통한 현대·기아차의 추격전략 연구
박찬용(Chanyong Park),조근태(Keuntae Cho) 한국경영과학회 2016 經營 科學 Vol.33 No.3
The objective of the study is to propose the catch-up strategy of Hyundai․Kia to become the globally leading company in the automobile industry. For this, we try to compare Hyundai․Kia with three leading automobile companies: Toyota, VW, and GM by using the Generalized Double Diamond Model. As a result, we present three ways that Hyundai․Kia can become a "First Mover." The three strategies are:1) controlling increase of wage, raising productivity, and increasing R&D investment 2) increasing overseas investment of the small and medium sized automobile factories 3) pursuing the two tracks strategy of a public car and a prestige car more aggressively. This study is significant in the fact that it presents the catch-up strategy of Hyundai․Kia in the automobile industry, of which the leaders can not be changed easily, by the Generalized Double Diamond Model approach.