• KDI Journal of Economic Policy
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• v.16 no.2
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• pp.141-170
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• 1994

지금까지 사회보장제도(社會保障制度)의 경제적(經濟的) 효율성(效率性)에 대한 많은 논의가 있어 왔다. 그러나 그중 생애주기(生涯週期)(life-cycle)에 바탕을 둔 일반균형연산모형(一般均衡演算模型)(AGE : Applied General Equilibrium)에 의환 경험적 분석은 미진하였다. 본(本) 연구(硏究)의 목적(目的)은 사회보장제도(社會保障制度)의 세대내(世代內) 생애소득분위간(生涯所得分位間) 재분배효과(再分配效果)와 경제적(經濟的) 효율성(效率性)을 분석하는 데 있다. 연구방법으로서 Fullerton and Rogers(1993) 모형을 수정한 일부문(一部門), 다소비자(多消費者) 생애주기(生涯週期) 일반균형연산모형(一般均衡演算模型)을 이용하였다. 본 연구는 미국을 대상으로 한 정상상태(定常狀態)(steady state)의 분석이며, 소비자(消費者)를 생애소득별(生涯所得別)로 5분위(分位)로 나누어 기존 사회보장세(社會保障稅) 및 급여(給與)가 경제적(經濟的) 효율성(效率性)뿐만 아니라 계층간(階層間)의 분배(分配)에 어떠한 영향을 주는지를 분석하였다. 본(本) 연구(硏究)의 주요한 기여사항(寄與事項)은, 첫째 사회보장제도(社會保障制度)의 부담귀착분석(負擔歸着分析)에 새로운 연구방법(硏究方法)을 시도하였다는 점, 둘째 재정정책(財政政策)의 하나인 사회보장제도(社會保障制度)의 실질적(實質的) 부담(負擔)의 귀착문제(歸着問題)를 생애주기모형(生涯週期模型)으로 분석하였다는 점, 셋째 부담(負擔)의 귀착(歸着)은 사회보장세(社會保障稅)와 아울러 사회보장급여(社會保障給與)를 고려하여 분석하지 않으면 편향(偏向)(biased) 될 수 있다는 점을 지적한 점, 넷째 분석결과(分析結果) 기존 사회보장제도(社會保障制度)는 생애주기적(生涯週期的) 소득분배(所得分配)의 관점에서 누진적(累進的)(progressive)인 제도이지만 경제적(經濟的) 비효율성(非效率性)(efficiency cost)을 내재하고 있다는 점 등을 밝힌 것이다.

• International Area Studies Review
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• v.12 no.3
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• pp.419-448
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• 2008

The objective of this study is to conduct a quantitative assessment of potential impacts on the Korean economy of Agreement on Trade in Services Under the Framework Agreement on Comprehensive Economic Cooperation Among the Governments of the Republic of Korea and the Member Countries of the Association of Southeast Asian Nations which was signed on 21 November 2007 using a Computable General Equilibrium (CGE) model. Tariff equivalents of services were calculated on the basis of concessions made in the Agreement between Korea and ASEAN member countries. The empirical analysis shows that Korea is to get an additional gain in real GDP of 0.04 percent and in welfare of US$106 million, with an increase in per capita utility of 0.03 percent. Total exports and imports of Korea are to rise by US$179 million and $191 million, respectively, causing a trade deficit of $12 million. Korea's exports to ASEAN member countries will increase by $108 million and Korea's imports from them will rise by $278 million, giving rise to a trade deficit of $170 million.

• Economic Analysis
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• v.25 no.2
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• pp.1-53
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• 2019

This paper examines monetary policy quantitatively in a two-agent and small-scale New-Keynesian economy with debt-constrained households that cannot smooth their consumption intertemporally and frictionlessly since highly indebted households are not allowed to borrow above a certain debt ceiling in incomplete financial markets without additional risk premiums due to information asymmetry between savers and borrowers. We find that, in the event of cost shocks, the asymmetric responses of borrowing households without, and saving households with, dividend incomes lead to different labor supplies and consumptions over heterogeneous households, and eventually to an extension of the monetary policy transmission channels. The income effect and low elasticity of the labor supply play key roles in such asymmetric responses over heterogeneous households. We also find that the social welfare in a flexible inflation targeting (FIT) monetary policy, in which both the inflation gap and the output gap are considered in an integrated manner when policy-making, is similar to that of the Ramsey optimal monetary policy (ROP), in which the shares of debt-constrained households, as well as all economic states, including both the inflation gap and output gap, are considered comprehensively for policy-making, and that it is greater than that of simple inflation targeting (SIT) monetary policy, in which only the inflation gap is considered mechanically for policy-making. Such social welfare implies that a FIT policy may still work even in an economy with a sizable number of debt-constrained households. Further, the responses of cost shocks to consumption and labor supply are dying out more slowly under FIT and ROP policies than under an SIT policy.

• Journal of Energy Engineering
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• v.6 no.2
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• pp.145-151
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• 1997

The R&D investment of power industry has significant influences on the social welfare as well as national economy. It is necessary to analyze how efficient the R&D investment has been performed. The objective of this study is to verify the efficiency of the R&D investment in the domestic power industry. A formula was introduced to by calculate the appropriate amount of R&D investment of monopolistic industry under the regulations which are determined by the proportion of R&D elasticity and price elasticity. It has resulted that there would be no economy of scale as the sales of electricity increases at the same rate of the increasing cost. The R&D investment in the present electricity industry has been performed inefficiently by showing the negative impact on price-cost margin of the intensity of R&D investment, which is the extent of R&D investment to reinforce economy of scale.

• Environmental and Resource Economics Review
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• v.15 no.5
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• pp.885-919
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• 2006

This paper revisits two conventional beliefs of environmental nonmarket valuation and examines their weaknesses and a new opportunity. The two beliefs are that willingness to pay (WTP) is an appropriate measure of nonmarket behaviour and that exogenous variables are relevant predictors of WTP whilst endogenous variables are not. The contemporary literature in psychology and economics is reviewed to demonstrate departures from these two beliefs. Tackling heterogeneity in stated preferences, both socio-demographic and psychological variables should be measured simultaneously to explain and predict choice behaviours more accurately.

• Journal of Regulation Studies
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• v.27 no.1
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• pp.123-151
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• 2018

There have been voluminous debates on the economic effects of the Sunday shopping restriction in Korea. This paper summarizes the issues on the restriction, critically reviews the previous researches, and proposes policy alternatives. First, the Sunday shopping restriction in Korea significantly lowers supply-side efficiency. Second, the restriction considerably reduces demand-side efficiency due to higher transaction costs. Third, there is no empirical evidence showing the restriction improves equity overall. Fourth, even if equity improvement occurs, there are a number of policy alternatives that can achieve the same equity effect with less efficiency loss.

• International Area Studies Review
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• v.17 no.4
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• pp.1-21
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• 2013

This study aims at conducting a quantitative assessment of potential economic effects of the Regional Comprehensive Economic Partnership (RCEP) consisting of 10 Member States of the ASEAN, Australia, China, India, Japan, Korea and New Zealand using a multi-region, multi-sector CGE model. Three different policy scenarios are carried out based on baseline scenarios: China-Japan-Korea FTA (Scenario 1); ASEAN+3 FTA (Scenario 2); and the RCEP (Scenario 3). The impacts of three scenarios are described in terms of real GDP, Equivalent Variation as a measure of welfare, export and import volumes, trade balance, and terms of trade. This study finds that the RCEP is to lead to an increase in real GDP of all members of the RCEP, with Korea as a winner with a highest additional economic growth of 2.43 percent, which implies that Korea is in a better position to play a leading role in promoting the RCEP.

• KDI Journal of Economic Policy
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• v.14 no.1
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• pp.191-212
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• 1992

This paper discusses the role of money in the process of capital accumulation where financial markets are impeded by contract enforcement problems in the context of overlapping generations framework. In particular, in less developed countries (LDCs) creditors may know little about the repayment capability of potential debtors due to incomplete information so that financial instruments other than money may not acceptable to them. In this paper the impediments to the operation of the private finanical markets are explicitly modelled. We argue that creditors cannot observe actual investment decisions made by the potential borrowers, and as a result, loan contracts may not be fully enforceable. Therefore, a laissez-faire regime may fail to provide the economy with the appropriate financial instruments. Under these circumstances, we introduce a government operated discount window (DW) that acts as an open market buyer of private debt. This theoretical structure represents the practice of governments of many LDCs to provide loans (typically at subsidized interest rates) to preferred borrowers either directly or indirectly through the commercial banking system. It is shown that the DW can substantially overcome impediments to trade which are caused by the credit market failure. An appropriate supply of the DW loan enables producers to purchase the resources they cannot obtain through direct transactions in the credit market. This result obtains even if the DW is subject to the same enforcement constraint that is responsible for the market failure. Thus, the DW intervention implies higher investment and output. However, the operation of the DW may cause inflation. Furthermore, the provision of cheap loans through the DW results in a worse income distribution. Therefore, there is room for welfare enhancing schemes that utilize the higher output to develop. We demonstrate that adequate lump sum taxes-cum-transfers along with the operation of the DW can support an allocation that is Pareto superior to the laissez-faire equilibrium allocation.

• Korea Real Estate Review
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• v.28 no.3
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• pp.7-19
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• 2018

Prior studies concerning the analysis of parents' homeownership on its offspring usually focus on the transmission of tenure between two generations. This study adopted a more comprehensive approach on this topic so the effects of parents' homeownership were analyzed through the economic performance of their sons. Korean labor panel data were used to test hypotheses on intergenerational transmission of parents' homeownership. The period covered years 2000 to 2014, consisting of about 862 samples, while many socioeconomic variables were selected through a filtering process. The results of the three hypotheses showed the following consequences. First, parents' homeownership was a meaningful factor in determining their son's housing tenure. Second, parents who are homeowners tended to have more educated sons. Third, parents' homeownership did not affect their son's annual income. This study showed more extensive effects of homeownership, and government strategy must consider this additional benefit in homeownership policies.

• Journal of Convergence for Information Technology
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• v.9 no.7
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• pp.78-84
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• 2019

The purpose of this study is to introduce the concept of the Smart Sewer System and to analyze the economic ripple effect when smart sewer is built all over Korea. The research method is the input-output model based on the assumption that the smart sewerage will be constructed throughout the Korea from 2021 to 2040. Estimation results show that the production-induced effect reaches 343.73 trillion Korean won, the added value-induced effect is 155.867 trillion Korean won, and the employment-induced effect is estimated by 25,118,470, indicating that the smart sewer project leads to being considerably large in the nation-wide economy. In addition, the increase of social welfare by smart sewer is expected to be realized through the improvement of both the environment improvement and the national health. Therefore, the smart sewer project should be implemented without delay by planning a concrete road map and putting it into effect with a budget.