• Environmental and Resource Economics Review
• /
• v.29 no.2
• /
• pp.145-170
• /
• 2020

This study analyzes the dependence structure between energy (crude oil, natural gas, coal) prices and economic (real and financial) uncertainty. Summary of the results of the dependence structure between energy prices and economic uncertainty analysis is as follows. First, the results of model selection show that the BB7 copula model for the pair of crude oil price and economic uncertainty, the Joe copula model for the pair of natural gas price and economic uncertainty, and the Clayton copula model for the pair of coal price and economic uncertainty were chosen. Second, looking at the dependency structure, it showed that the pair of energy (crude oil, natural gas, coal) prices and real market uncertainty show positive dependence. Whereas, the only pair of financial market uncertainty-crude oil price shows positive dependency. In particular, crude oil price was found to have the greatest dependence on economic uncertainty. Third, looking at the results of tail dependency, the pair of real market uncertainty-crude oil price and pair of real market uncertainty-natural gas price have an asymmetric relationship with the upper tail dependency. It can be seen that the only pair of financial market uncertainty-crude oil represents asymmetric relationships with the upper tail dependencies. In other words, combinations with asymmetric relationships have shown strong dependence when negative extreme events occur. On the other hand, tail dependence between economic uncertainty and coal price be not found.

• Annual Conference on Human and Language Technology
• /
• 1989.10a
• /
• pp.302-306
• /
• 1989

이 연구는 '맞다'가 의미론적 기본개념으로서의 진리에 대한 대체후보가 될 수 있는가의 물음을 배경으로 삼고 이 논문에서는 맞음의 개념이란 무엇인가라는 문제에 초점을 두고 다음의 다섯가지를 일차적으로 고찰한다. (1) '맞다'에 대한 일상언어분석을 통하여 이것은 두자 리 관계술어라는 점을 보이고 (2) 단어의 표면적 다의성은 그 반대어인 '틀이다'의 분석을 통하여 궁극적으로는 동일한 뿌리를 가지고 잇다는 것을 주장한다. (3) 맞음은 대칭적 논리구조를 일반적으로 가지지만 화자의 관심에 의해 비대칭적 구조를 가질 수도 있을 것이다. (4) '맞다'라는 단어를 해명할 수 있는 세가지 후보를 필요충분조건적 해석, 의미론적 접근, 표준론적 고찰에서 탐구하여 보지만 (5) '맞다'에 대한 진화론적 해석이 의미론적 기초개념일 수 있다고 생각하게 되었다.

• The Journal of the Korea Contents Association
• /
• v.19 no.5
• /
• pp.280-286
• /
• 2019

This study first examines whether the matching principle reduces information asymmetry and verifies the effect on earnings sustainability and information asymmetry. In the presence of information asymmetry between managers and information users, managers can reduce information asymmetry by increasing the quality of earnings. Information asymmetry is measured by the financial analysts' earnings forecast variance. When we look at the results of previous studies, verify whether information asymmetry decreases as the response to the revenue cost increases and whether negative relationship between profit persistence and information asymmetry appears when the response to the revenue cost is high. As a result, firms with high revenue cost response showed a decrease in information asymmetry. The persistence of the earningss from the high earnings-cost response shows that the analysts' earnings forecast dispersion decreases. This means that the better the response to the revenue cost, the better the quality of the earnings and the less the information risk about the uncertainty of the enterprise. This study is different from the previous studies in that it analyzed whether the persistence of the earnings that responded to the high revenue cost reduces the information asymmetry. The results of this study suggest that managers can reduce the information asymmetry by carrying out appropriate revenue - cost responses, which provides important implications for stakeholders who use accounting earnings information.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.18 no.8
• /
• pp.1925-1930
• /
• 2014

This paper has analyzed the relation of conduction path and subthreshold swing for doping profile in channel of asymmetric double gate(DG) MOSFET. Since the channel size of asymmetric DGMOSFET is greatly small and number of impurity is few, the high doping channel is analyzed. The analytical potential distribution is derived from Possion's equation, and Gaussian distribution function is used as doping profile. The conduction path and subthreshold swing are derived from this analytical potential distribution, and those are investigated for variables of doping profile, projected range and standard projected deviation, according to the change of channel length and thickness. As a result, subthreshold swing is reduced when conduction path is approaching to top gate, and that is increased with a decrease of channel length and a increase of channel thickness due to short channel effects.

• Membrane Journal
• /
• v.7 no.4
• /
• pp.191-198
• /
• 1997

Membrane formation mechanism by the phase inversion has been investigated in order to control the membrane morphology. It was found that finger-like structures were obtained when the heat of mixing between the solvent and non-solvent is exothermic, while sponge-like structures were obtained when they are endothermic in polystyrenes as well as in polyimides (Torlon and polyimide made frorn 3,3'4,4'-benzophenontetracarboxylic diahmydride and 1,4-phenylene diarnine) membranes. This concept was applied to control the morphology of polysulfone membranes simply by adding a solvent additive by adjusting the heat of mixing. A crude, but simple, relationship between the heat of mixing and the exchange rate of the solvent with non-solvent has been also developed.

• Korean System Dynamics Review
• /
• v.4 no.2
• /
• pp.45-69
• /
• 2003

'비대칭'으로 특징지워지는 이동통신 시장에서의 규제 정책은 찬반 논란속에서 많은 이슈들을 제기하고 있다. 이에 따라 많은 선행 연구들이 이동통신 시장에서의 비대칭 규제에 대한 한계를 지적하고 계선 방안을 제시하고자 노력하였다. 그러나 대부분 개념적으로 설명하여 정책의 실효성을 가시적으로 보여주지 못할 뿐만 아니라 다양한 정부 정책들이 혼합되어 나타날 영향에 대한 고려는 미흡하다. 본 연구는 이러한 한계를 극복하기 위한 하나의 대안으로서 시스템 다이내믹스라는 새로운 접근 방법을 적용하였다. 다양한 변수들간의 인과 관계와 피드백 구조를 중심으로 작성된 인과지도는 이동통신시장과 같이 복잡한 시스템의 특성을 규명하여 문제의 원인을 구조적으로 설명할 수 있으며 이에 기초한 시뮬레이션 모델은 다양한 정책 대안들을 시나리오에 따라 시뮬레이션 함으로써 정부 규제가 이동통신 시장에 미치는 영향을 예측하고 의사결정을 위한 함의를 이끌어내는 데 매우 유용할 수 있다.

• Journal of Sensor Science and Technology
• /
• v.8 no.5
• /
• pp.407-413
• /
• 1999

The resonant frequency of dielectric rod resonator can be calculated very accurately by means of the concept of electric and magnetic walls from the symmetry. But in a real situation, when the supporter is placed in the cavity, asymmetry appears due to the supporter and its dielectric constant. Then we need research into the resonance characteristic of asymmetric dielectric resonator. In this paper, for the dielectric rod resonator which is placed in the asymmetric position in the conducting cavity, the equation for resonance characteristic was derived and the resonant frequency was calculated with the eigenfunction expansion method. We found that the calculated resonant frequency is very accurate when it was compared with the experimental result and that asymmetry affects the resonant frequency more in TM mode than in TE or in hybrid mode.

• 한국사회정책
• /
• v.23 no.2
• /
• pp.113-139
• /
• 2016

This article tries to compare exchange relations between welfare and dictatorship in the East Germany and the North Korea. Unlike capitalist welfare aiming at correcting market results socialist welfare has been proposed to satisfy people's basic needs, but it had operated as instrument of dictatorship. Relation between welfare and dictatorship could be distinguished as hard exchange and soft one in line with social construction of welfare. Welfare-dictatorship relation in East Germany had developed from its formation(1949-1970s), crisis(1980s) and dissolution(1989-1990). There had established hard exchange relation in which the legitimacy of dominance had debted to welfare as social rights. While crisis of the exchange relation had been modest in a form of insufficient supply of consumption goods, it was one of the elements of collapse of dictatorship, leading to the unification with West Germany. The journey of the exchange relation in North Korea can be characterized by its formation(1948-1980), crisis(1990s-2000s), and transformation(2010s). Unlike East Germany, welfare was socially constructed as gift form the ruler to the ruled, which made the combination of welfare and dictatorship loosely coupled. Although economic crisis was severe compared to East German one the rulers have succeeded maintaining dictatorial dominance by creating dual exchange relation. They separated core group and subordinated one supporting the former at the expense of the latter. They blocked out most of the people from soft exchange relation making bad use of muddling-through life style dependent on market activities. This strategy led to a 'dictatorship neutral welfare extinction'. Taking the high degree of institutionalization of newly establishing welfare-dictatorship relation into account, lives of most people are hardly expected to be improved by gift by their rulers even if North Korean economy will recover in the future.

• Journal of Korean Society of Steel Construction
• /
• v.19 no.4
• /
• pp.357-366
• /
• 2007

This paper is a pilot study regarding an experimental and parametric study to investigate the structural behavior of slimfloor beam(ASB) in fire. The objective of this research is to obtain the rational fire resistance design method through understanding the structural behavior of composite members in fire. The flexural capacity of slimfloor section under various thermal conditions is examined on a basis of the strength retention of the materials at elevated temperatures and full bonding assumption. The effect of web thickness and ASB depth to the moment capacity in fire is also examined.

• Journal of Distribution Research
• /
• v.13 no.2
• /
• pp.1-27
• /
• 2008

In a power-asymmetry relationship like franchise system, a high dependent franchisee must often rely on its powerful partner. Therefore, in order to build up 'win-win' systems, therefore channel members should increase trust and commitment each other to enhance the relationship quality to sustain long-term cooperative relationships. First of all, to increase the relationship quality in franchise system, franchisor should increase franchisee's perception of the powerful franchisor's justice. The point of this research, I established basic hypotheses and comparative hypotheses to examine franchisor's behavior what franchisee expected which influences on franchisee's attitude and behavior in power - asymmetry relationship in franchise system. For the purpose of the empirical testing, managers of franchisee in the food service industry of Korea had been selected and analyzed, and major findings in this study as follow: First, the relational norm between franchisor and franchisee increased both distributive justice and procedural justice, especially relational norm had more effect on procedural justice than distributive justice. Second, distributive justice increased both economic commitment and social commitment while procedural justice just increased social commitment only but economic commitment. So, on the relational commitment, distributive justice was more important element than procedural justice. On the other hand, procedural justice had indirect effect on economic commitment through distributive and social commitment.