• Journal of Korean Society for Atmospheric Environment
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• v.27 no.6
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• pp.681-691
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• 2011

The size distributions of smoke particles from fire are prerequisite for the studies on fire detection and adverse health effects. Above the flame of the fire, coagulation dominates and the smoke particles grow from 1 to 50 nm up to 100 to 3,000 nm, sizes ranging from the free-molecular regime to the continuum regime. The characteristics of the agglomeration of the smoke particles are well known, independently for each of the free-molecular and continuum regimes. However, there are not many systematic studies in the entire regime by the complexity of the mechanisms. The purpose of this work is to find the characteristics of the development of the size distribution of smoke particles by agglomeration in the entire size range covering the free-molecular regime, via transition regime, to the near-continuum and continuum regime for each variation of parameters such as fractal dimension, primary particle size and dimensionless coagulation time. In this work, the dynamic equation for the discrete-size spectrum of the particles was solved using a nodal method based on the modification of a sectional method. In the calculation, the collision frequency function for the entire regime, which is derived by using the concept of collision volume and general enhancement function, was applied. The self-preserving size distribution for the entire regime is compared with the ones for the free-molecular or continuum regimes for each variation of the parameters.

• Korean Journal of Legislative Studies
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• v.23 no.1
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• pp.5-36
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• 2017

This paper aims to clarify the characteristics of 'the regime 87', the product of democratic transition of Korea in 1987, and its historical evolution. Through the clarification, this paper expects to provide a discoursive basis for reforming the regime 87 and advancing democracy in Korea. For this purpose, this paper seeks to find Korea within the context of macro-historical change of the world. And then this paper tries to analyze the reason and the process of the birth of the regime 87 and its historical evolution.

• Ocean and Polar Research
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• v.28 no.2
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• pp.163-173
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• 2006

The so called Antarctic Treaty System, started from the Antarctic Treaty in 1959, has gradually been enlarged into the concept of an international environmental regime, which has been included in not a few international institutions, treaties, conventions, and international non-governmental organizations (INGO). This kind of movement, as in the role of an international environmental regime, has recently been highlighted in the Protocol on Environmental Protection to the Antarctic Treaty. This Protocol is taking appropriate measures as an international environmental regime in regulating its member nations by enforcing principles in protecting Antarctic resources and environment, regulating member nations' Antarctic activities, establishing norms in the adoption of international and domestic laws, and devising regulations for deciding administrative actions through the member nations' collective decision-making procedures. h this context, this paper is to test a few questions; firstly, how the Antarctic Treaty System can be related with the role of international environmental regime; secondly, how the theories of international environmental regime, such as the hegemony theory, rational choice theory, and international morality theory, can be tested in the role of Antarctic Treaty System as an international environmental regime. Finally, this paper provides a solution for the future problems of the Antarctic Treaty System as an international environmental regime regarding the regime's principle (conflict between the environmental principle and the right of nation-state), norms and regulations (the conflict between the developed and underdeveloped nations in terms of the concept of 'common but differentiated environmental responsibility'), cooperation directions (the leadership problems between hegemonic nation and multilateral leading groups), and management methods (cooperation and arrangement problems among expert institutions, observer groups, and INGO).

• Ocean and Polar Research
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• v.28 no.3
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• pp.273-285
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• 2006

As the political arguments on international power concept has gradually been deepened, the role of international regimes, defined as principles, norms, rules, and decision-making procedures around which nation-actors' expectations converge in a given issue-area, has also been reinforced. There are many ways of understanding about international regimes. In terms of realistic theories, international regimes are one of methods of maintaining hegemonic power order of hegemonic nation and in terms of liberalistic theories, international regimes are understood as the products of mutual inter-dependence of nations in changing international society. As a matter of fact, if we take structural causes and regime consequences into severe consideration, we can find not a few characteristics of international regimes, such as security regime, world trade and fiance regime, ocean regime, environmental regime, human right regime, etc. This paper will examine the changing concept of power after World War II in three categories of hard power (military power), meta power (regime creating power), and soft power (advanced in cultural, diplomatical, and technological power). This paper will provide the evidence of why the changing power concepts will be strongly related with the emergence of international regimes. The UN convention on the law of the sea will chosen as a standard case of the ocean regime and it's regime structure and role will also be analysed in both realistic :md liberalistic theories. Futhermore, the nations' interests involved in the UN convention on the law of the sea will be analytically classified and finally a future prospectus of the UN convention on the law of the sea as an ocean regime will be tested.

• Communications for Statistical Applications and Methods
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• v.21 no.6
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• pp.501-512
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• 2014

Stylized facts on asset return are fat-tail, asymmetry, volatility clustering and structure changes. This paper simultaneously captures these characteristics by introducing a multi-regime models: Finite mixture distribution and regime switching GARCH model. Analyzing the daily KOSPI return from $4^{th}$ January 2000 to $30^{th}$ June 2014, we find that a two-component mixture of t distribution is a good candidate to describe the shape of the KOSPI return from unconditional and conditional perspectives. Empirical results suggest that the equality assumption on the shape parameter of t distribution yields better discrimination of heterogeneity component in return data. We report the strong regime-dependent characteristics in volatility dynamics with high persistence and asymmetry by employing a regime switching GJR-GARCH model with t innovation model. Compared to two sub-samples, Pre-Crisis (January 2003 ~ December 2007) and Post-Crisis (January 2010 ~ June 2014), we find that the degree of persistence in the Pre-Crisis is higher than in the Post-Crisis along with a strong asymmetry in the low-volatility (high-volatility) regime during the Pre-Crisis (Post-Crisis).

• Journal of the Chungcheong Mathematical Society
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• v.26 no.4
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• pp.787-791
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• 2013

In this paper we present one factor model of commodity prices with a single jump regime-switching process. And we derive an analytic formula for pricing futures contracts when the parameters of commoditiy process have governed by a Markov regime-switching process.

• Journal of the Chungcheong Mathematical Society
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• v.27 no.2
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• pp.237-242
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• 2014

In this paper we provide a valuation method for multi-asset derivatives with single jump regime-switching volatilities. We suppse that volatilities of assets are affected by an n-dimensional independent Markov regime-switching process.

• Journal of Korea Trade
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• v.26 no.1
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• pp.33-56
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• 2022

Purpose - This paper explains how free trade agreements (FTAs) work as a building block to achieve global free trade and be better than other trade regimes. Design/methodology - This paper utilizes a trade liberalization game setup. Three countries choose a trade agreement strategy based on a given trade regime. Trade agreement is made only when all member countries agree. The paper evaluates each trade regime concerning FTAs and customs union (CU) by area size of global free trade equilibrium on the technology or demand gap between countries. Findings - FTAs make global free trade easier. In this game, there are two main reasons for failure to reach global free trade. First, a trade regime with FTAs makes non-member face difficulties in refusing trade agreements in the existence of a technology gap than a trade regime without FTAs. Also, a trade regime with FTAs causes it harder to exclude non-members in the existence of a demand gap than a trade regime with only CUs. Therefore, a trade regime with FTAs can work better in reaching global free trade. Originality/value - The concept of "implicit coordination" was used, which assumes that FTA members keep external tariffs for non-members the same as before an FTA. Without this consideration, FTA members lower their tariffs to non-members, and it makes non-member refuse free trade easier. FTA can prevent it sufficiently only with implicit coordination. This makes the trade regime with FTAs more effective to reach global free trade.

• KDI Journal of Economic Policy
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• v.28 no.1
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• pp.193-218
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• 2006

This paper examines the macroeconomic structural differences of the free floating exchange rate regime and the managed float exchange rate regime focusing on the Korean economy, and compares it to the two benchmark economies, Japan and Australia. Korea's shift to the free floating exchange rate regime from the managed float exchange rate regime came after the 1997 economic crisis. Korea's exchange rate policy provides a unique opportunity to study the different behaviors or roles, if any, of managed float and free floating exchange rate regimes. Based on a simple monetary model, we find that the exchange rates of Korea are more sensitive to the economic fundamentals under the free floating regime than under the managed float regime. Impulse response analysis shows that exchange rate pass-through into domestic variables, especially inflation rate, has a bigger short-term impact under the floating regime than under the managed regime. This finding is consistent with the view that the managed (or fixed) regime provides the domestic price stability necessary for the economic growth for the developing countries.

• Korean Journal of Social Welfare
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• v.69 no.2
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• pp.9-30
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• 2017

Generally, regime shift occurs less frequently than policy change and/or government change. Regime shift needs alterations and changes along the three critical components which constitute a domestic regime: (1) the character of the socioeconomic coalition that rules the country; (2) the political and economic institutions through which power is acquired and exercised; and (3) the public policy profile that give political direction to the nation. This paper tries to examine characteristics of the welfare regime of Korea, and explore policy reform options for the welfare regime shift in Korea. From the viewpoint of livelihood security perspective, I firstly tries to examine development process of Korean welfare regime and specify the main characteristics of that regime. Secondly, I present three policy reform options: (1) reform of the formal political institutions such as electoral system and government type; (2) restructuring of the composition of government expenditure structure; and (3) reduction of the informal employment. These three policy reform options are related to the alteration of socioeconomic coalitions and the changes of the political and economic institutions. Instead of concluding remarks, I finally suggest two debate topics to the round table discussion.