• Journal of the Korea Society for Simulation
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• v.25 no.3
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• pp.125-132
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• 2016

This study intended to exploratively depict the influence of interaction between Environmental Uncertainty and Learning Orientation of Korean IT companies on Marketing Capability which was adopted as one of the organizational performance indicator. Statistical Results based on AMOS and SPSS showed that smaller-sized companies under 500 employees are more inclined to desperately and flexibly meet and adapt to their environmental uncertainty, resulting positive performance, that is, marketing capabilities. On the other hand, larger-sized companies over 500 employees showed no significant interaction effect. This result of the study induces the reasoning that the differences in competitive environment and market leadership accrued by organizational size may also incur differences in environmental adaptive mechanism. However, this reasoning can have some limitation in that the types and traits of IT firms are so different. Therefore, this topic suggests the necessity of follow-up researches using enlarged samples in IT industry and comparative studies in other industries.

• Cross-Cultural Studies
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• v.51
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• pp.45-71
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• 2018

This essay explores Louise Erdrich's politically resistant voice which interrogates and disrupts the long-lasting, pernicious misbelief about Native Americans as 'vanishing people'. This essay chiefly focuses on the two female characters-Lulu Nanapush and Marie Lazarre Kashpaw-in the author's widely acclaimed novel Love Medicine (1993). First, illustrating the Chippewas' multifaceted resistances against white Americans' colonialist dominance disclosed in their enforcement of governmental policy, law, religion, and culture, this essay investigates how Erdrich does not stop telling her story that the idea of 'vanishing people'-another version of 'Manifest Destiny'-is unfounded. Second, by referring to Freud's and Marcuse's speculation on 'Eros'-the great unifying energy that preserves all life-as an alternative to the predicament caused by an oppressive civilization, this essay illuminates Erdrich's vision of sustaining and regenerating the Chippewas' tribal life and heritage that center on the embracing power of love reified in Lulu and Marie. Their undying energy consolidating their communal love and ties, despite the destructive, oppressive colonialist milieu inflicted on the Chippewa Indian reservation, sheds light on the author's politics of 'Eros' predicated tightly upon her historical consciousness.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.39-46
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• 2019

This study started with the question of whether the percentage of non-aeronautical revenues at Incheon airport was extremely high when compared with other international airports. Although aeronautical revenues for the airport based on the traditional business model have the limits to grow due to various regulations, stakeholders concerned about improving the competitiveness recently have been interested in increasing non-aeronautical revenues. This study deals with the effect of non-aeronautical revenues at international airports on airport charges as the extent of airport privatization get stronger. To examine hypotheses, we collected international data from trustful sources. Finally, we conducted an empirical analysis of 178 airports worldwide. As a result, the higher the percentage of non-aeronautical revenues at international airports, the lower the airport charges were. Besides, the private equity ratio positively moderated the relationship between the percentage of non-aeronautical revenues and airport charges. Privatization of airports may offset the effects of reduced airport charges through increased commercial activity. Graphical display for moderation effect is offered to facilitate comprehension.

• Journal of Internet Computing and Services
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• v.20 no.1
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• pp.97-111
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• 2019

This study discuss how the meaning and role of the state in the process of globalization are defined by the media and how the regulation is related to the ideology and value inherent in the process of globalization. Specifically, we tried to examine how the meaning and role of neoliberal state, which characterizes globalization process, is justified and reinforced by media. The purpose of this study is to understand the characteristics of the dominant globalization process inherent in the discourse of national competitiveness by analyzing how the national competitiveness index report released by the World Economic Forum is reported by the media every year. In addition, we sought to understand the significance and role of the state in the globalization process by examining what areas are emphasized and excluded from the national competitiveness index composed of economic infrastructure, economic efficiency, and enterprise innovation activities.

• Korean Chemical Engineering Research
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• v.57 no.3
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• pp.338-343
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• 2019

The water transport and water content of the electrolyte membrane greatly affect the performance of the membrane in PEMFC(Proton Exchange Membrane Fuel Cell). In this study, the parameters (electroosmotic coefficient, water diffusion coefficient) of polymer membranes for water transport were measured by a simple method, and water flux and ion conductivity were simulated by using a model equation. One dimensional steady state model equation was constructed by using only the electro-osmosis and diffusion as the driving force of water transport. The governing equations were simulated with MATLAB. The electro-osmotic coefficient of $144{\mu}m$ thick polymer membranes was measured in hydrogen pumping cell, the value was 1.11. The water diffusion coefficient was expressed as a function of relative humidity and the activation energy for water diffusion was $2,889kJ/mol{\cdot}K$. The water flux and ion conductivity results simulated by applying these coefficients showed good agreement with the experimental data.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.140-140
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• 2018

다수의 자연 하천은 사행의 형태를 가지고 있으며 자연 상태에서의 직선 하천 형태는 비율이 20% 이하이다. 이러한 하천의 사행 형상으로 인하여 편수위 발달, 횡방향 압력의 불균형, 그리고 수심차에 의한 원심력이 발생하여 이차류 흐름이 발생된다. 정확한 이차류 구현을 위해서는 3차원 모형을 사용하는 것이 바람직하나, 3차원 모형의 격자 구성과 사용에서는 상당한 시간 및 노력이 요구되기 때문에 수심적분 2차원 모형을 사용하면서도 이차류의 영향을 구현하기 위한 연구들이 이루어졌다. 본 연구에서는 이러한 이차류의 영향을 2차원 모형으로 구현하고자 하였으며 이를 위해 이차류 연직 분포에 대한 기존 연구를 검토하여 새로운 이차류 공식을 개발하였다. 그리고 한국건설기술연구원 하천실험센터의 실규모 실험을 통해서 이차류 공식에 사용되는 계수를 보정하였다. 이처럼 개발된 식은 이차원 수리해석 모형인 HDM-2D에 적용되었다. HDM-2D는 수심 적분된 2차원 운동량 방정식을 지배방정식으로 사용하는 수리해석모형으로서, 이차류의 영향을 반영하기 위하여 개발한 황방향 유속의 연직분포식을 분산 응력항에 대입하여 이차류에 의한 전단 효과를 구현하였다. HDM-2D 흐름 모의 수행 결과와 하천실험센터 실험결과와 비교하여 이차류 효과가 주 흐름 유속의 분포에 미치는 영향을 확인하였다. 분석 결과, 모의 결과는 실험에서 발생하는 유속의 주 흐름 분포가 바깥쪽으로 편중되는 현상을 적절하게 재현함을 알 수 있었다. 모의 결과를 통해 HDM-2D 모형이 이러한 이차류 영향을 구현할 수 있음을 확인하였으며, 사행수로에서 주 흐름분포의 재분배는 하천 환경에서 유사 이동 및 오염물 이동에 큰 영향을 미칠 것으로 판단된다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.35 no.2
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• pp.119-129
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• 2022

It is essential to control the lateral displacement and differential axial shortening of the vertical elements in high-rise buildings. The differential axial shortening can cause challenges in the serviceability and safety of non-structural and structural elements, respectively. Hence, in this study, the differential axial shortening of the vertical elements and effects of long term behaviors of concrete are analyzed in 120-story high-rise buildings via the construction sequence analysis. Consequently, the axial shortening of the vertical elements is classified into elastic, creep, and shrinkage shortening, and dominant factors to the maximum axial shortening are analyzed. In addition, the serviceability of the non -structural elements is checked with a differential axial shortening at 30 years after completion of construction, and member forces at design and construction stages in girders and outrigger walls are compared.

• Journal of the Korean Geotechnical Society
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• v.24 no.6
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• pp.27-35
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• 2008

At low normal stress levels tensile strength of sand varies with either saturation or suction of soil in an up-and-down manner with a peak tensile strength that can occur at any degree of saturation. A theory that accurately predicts tensile strength of wet sand is presented. A closed form expression for tensile strength unifies tensile strength characteristics in all three water retention regimes: pendular, funicular, and capillary. Three parameters are employed in the theory; namely, the Internal friction angle (at low normal stress) ${\phi}_t$, the inverse value of the air-entry pressure ${\alpha}$, and the pore size spectrum parameter n. It is shown that the magnitude of peak tensile strength is dominantly controlled by the ${\alpha}$ parameter. The saturation at which peak tensile strength occurs only depends on the pore size spectrum parameter n.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.1A
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• pp.99-106
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• 2006

Due to single symmetry of cross section, T-shaped members are likely to buckle in a flexural-torsional mode when they are subjected to axial compression. Therefore, the flexural-torsional buckling can be regarded as a governing mode of global buckling. An experimental program has been carried out to investigate the flexural-torsional buckling behavior of pultruded T-shaped members. Two types of pultruded members were tested in the experiment, and they were made of either E-glass/vinylester or E-glass/polyester. Lay-up and thickness of reinforcing layers, volume fractions of each constituents in layers, mechanical properties were experimentally determined. Two sets of knife edge fixure were used to simulate simple support condition for flexure and twisting, and the lateral displacements and the angle of twist were measured using three potentiometers. Every specimen buckled in a flexural-torsional mode, and most of the specimens showed post-buckling strength.

• International Area Studies Review
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• v.15 no.1
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• pp.367-389
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• 2011

This paper examines what factors contribute to the entry of foreign investors to Chinese commercial banks from 1996 to 2008. Empirical results show that using survival analysis, size, liquidity ratio and non-interest incomes are important to foreign investors. This indicates that as Chinese banking system opened, foreign investors invest in bigger but financially weak banks. For Joint-Stock commercial banks, foreign investors invest in banks whose asset qualities and non-interest incomes are low. But for City commercial banks, foreign investors invest in banks that are big but have low liquidity ratios. This results indicate that because City commercial banks operate in only one city, foreign investors require minimum bank size to operate in that city.