• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.807-808
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• 2023

공증이란 "공증인에 의한 공적인 증명"의 준말로서, 법무부 지방검찰청 소속의 "공증인"이 특정한 사실 및 법률관계의 존재를 공적으로 증명하는 행위를 말한다. 공증문서 위변조 방지를 위해 NFT 에 거래방지 기능이 추가된 SBT 를 이용하여 블록체인으로 문서를 관리해 무결성과 진본성을 보장하는 스마트 공증 플랫폼을 제안한다.

• Journal of the Korean association of regional geographers
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• v.14 no.5
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• pp.604-626
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• 2008

In recent years, the formation of identity has drawn much attention in urban development strategy. This has a dual implication for normative rehabilitation of lost traditional identity for ontological security of human being, and for strategic improvement of newly urban images in order to gain superiority in urban competitions. This duality is reflected on the debate between postmodern theorists, such as Lacan, Foucault and Deleuze, criticizing modem identity, and Arendt and Habermas, suggesting alternative formation of identity through public space. This paper considers some implications of identity for urban development policy, while criticizing urban development strategies which justify themselves with enhancing urban identity but which distort or erode it actually. In particular, this paper argues that the perspective of postmodern theorists is suitable for criticizing pseudo-identity in reality, while critical theoriests' suggestion of formation of authentic identity through and in public space can be understood as an ethical alternative to urban development policy.

• International Area Studies Review
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• v.15 no.1
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• pp.219-240
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• 2011

The main purpose of this study is to analyze the effects of stock price and real estate price on the money demand. We investigated the demand for money for 25 money units of 10 countries. To estimate the money demand functions, Johansen's cointegration and ARDL-bounds test were employed. Additionally, Stock and Watson's DOLS method was applied to estimate long-run cointegration vectors. According to the results of cointegration test, stock price and real estate price are crucial in the long-run equilibrium relationship. There were no cointegration relationships among money demand, real income, interest rate, and exchange rate in 12 money unit models. However, by including stock price and real estate price on the tested models, we could find strong cointegration relationships, using ARDL-bounds test. The results of DOLS confirm that stock price and real estate price are effective factors influencing on money demands. Especially, the coefficient of real estate price is statistically significant in the 19 out of 20 money unit models. However, the direction and magnitude of coefficients of asset prices are different across countries and money units.

• KEPCO Journal on Electric Power and Energy
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• v.3 no.1
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• pp.65-72
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• 2017

This study analyzed causal relationship between electricity consumption and economic output (GDP) for Korea from 2001 to 2014 employing the vector error-correction model estimation by manufacturing sector. The results of unit-roots tests show that all sectoral GDP and electricity consumptions were not stationary. And cointegration tests show that processed foods, Wood Pulp Paper, electricity apparatus, Precision Medical sectors had a linear combinations in the long run between electricity consumptions and economic growth. With respect to the direction of causality, manufacturing sector has a uni-directional running from economic output (GDP) to electricity consumption in short term. The results of study show that sectoral causal relation were different each other in short term and long term. These findings imply that electricity demand management policy focusing on efficiency improvement is necessary to minimize negative impacts on economic growth and to adopt suitable structural policies can induce energy conservation.

• Land and Housing Review
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• v.5 no.4
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• pp.259-269
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• 2014

After global financial crisis, the ratio of household debt to GDP was decreasing in other advanced countries such as the U.S., and the U.K. and so on. But, in Korea, household debt (of which residential mortgage loan account for a large part) ratio is still increasing. This paper focuses on the scale and characteristics of households in negative housing equity (those are called House-poors in Korea), and also the socio-economic backgrounds of the formation process. In financial perspective, the problem of negative housing equity depends on financial debt repayment capability. We used DSR (Debt Service Ratio) and LTA (Loan to Asset ratio) as financial indicators to evaluate the debt repayment capability. The critical value of DSR is assumed as 40%, and LTA 100%. The socio-economic backgrounds of the House-poors are as follows : increasing households debt dependency, over lending competition of financial institutions and unreasonable loan in household economy, instability of real estate market, week regulation on mortgage loan. Finally, this paper suggests some implications about the range and the target of public intervention.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.6
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• pp.453-459
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• 2021

The system marginal price of electricity is the amount paid to all the generating units, which is an important decision-making factor for the construction and maintenance of an electrical power unit. In this paper, we suggest a long-term forecasting model for calculating the system marginal price based on prices of natural gas and oil. As most variables used in the analysis are nonstationary time series, the long run relationship among the variables should be examined by cointegration tests. The forecasting model is similar to an error correction model which consists of a long run cointegrating equation and another equation for short run dynamics. To mitigate the robustness issue arising from the relatively small data sample, this study employs various testing and estimating methods. Compared to previous studies, this paper considers multiple fuel prices in the forecasting model of system marginal price, and provides greater emphasis on the robustness of analysis. As none of the cointegrating relations associated with system marginal price, natural gas price and oil price are excluded, three error correction models are estimated. Considering the root mean squared error and mean absolute error, the model based on the cointegrating relation between system marginal price and natural gas price performs best in the out-of-sample forecast.

• Environmental and Resource Economics Review
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• v.24 no.4
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• pp.709-725
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• 2015

This study is to analyse the relationship between the price and the supply in the farming Olive Flounder's production area market. The data used in this study correspond to daily price and supply quantity covering time period from January 1, 2007 to June 30. 2013. The analysis methods of cointegration and vector error correction model are employed. The empirical results of this study are summarized as follows: First, the price and the supply follow random walks and they are integrated of order 1. Second, the price and the supply are cointegrated. Third, vector error correction model suggests that the relationship between the price change ration and the supply quantity change ratio has negative and feedback effect exists in the long-run, but the disequilibrium between the price and the supply is corrected by the supply quantity. Finally, vector error correction model suggests that the supply quantity leads the price in the short-run. This indicates that the decrease(increase) of the supply quantity results in the increase(decrease) of the price.

• Environmental and Resource Economics Review
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• v.19 no.3
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• pp.571-595
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• 2010

This research applies an panel data stationarity and stochastic convergence test developed by Carrion-i-Silvestre et al. (2005), which has the advantage of considering multiple structural breaks and the presence of cross-section dependence in order to investigate the hypothesis that relative emission $CO_2$ per capita stochastically converge for 11 Asian countries from 1971~2007. We find that relative emission $CO_2$ per capita is stationary after the structural breaks and cross-section dependence are introduced into the model. We also investigate whether Environmental Kuznets Curve (EKC) hypothesis exists in 11 Asian countries. For EKC test, using the panel cointegration tests of Banerjee and Carrion-i-Silvestre (2006) and Westerlund and Edgerton(2007), we find that relative emission $CO_2$ per capita and relative GDP per capita are cointegrated. However EKC hypothesis in 11 Asian countries is not supported.

• Journal of Teachers' Pension
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• v.5
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• pp.53-95
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• 2020

정부에서는 공적연금 운용 업무를 수행하는 연금공단에 대해서 지방세특례제한법상 조세감면 혜택을 부여해 왔으나, 2014년도부터는 지방자치단체의 재정확충을 위해서 지방세 특례를 폐지하였다. 이러한 지방세 특례 폐지가 연금재정에 부정적인 영향을 미치게 됨에 따라, 본 연구에서는 현행 사학연금공단에 대한 지방세 감면 폐지의 문제점를 살펴보고, 이를 통해 법 개정 등의 개선방안을 모색하고자 하였다. 구체적으로 2014년 말에 시행된 지방세 감면 규정의 일괄적인 폐지는 2002년에 개정된 연금소득 과세원칙에 비추어볼 때 과세원칙 위배와 함께 미적립 연금충당부채를 지니고 있는 연금공단의 제도적인 특성을 감안하지 않는 문제점이 있어 이를 검토하고 이에 대한 개선방안을 다음과 같이 제시하고자 한다. 본 연구에서 제시하는 개선방안은 다음과 같다. 첫째, 과거와 같이 사학연금공단에 대한 지방세특례를 부활하여 연금재정의 안정화를 제고할 필요가 있다. 둘째, 연금소득 원칙상 갹출 시 공제, 운용 시 비과세 및 연금 수령 시 과세를 하도록 하고 있으므로 현행 연기금을 운용하고 있는 사학연금공단에 대하여 운용단계에서 지방세를 부과하는 것은 연금소득 과세 원칙상 재검토가 필요하다. 셋째, 현재 연금기금의 운용이익에 대해서는 법인세가 비과세되으나 지방세는 과세가 되고 있어 국세와 지방세의 형평성 측면에서 문제가 있으므로 원칙적인 검토가 필요하다. 넷째, 미적립 연금충당부채를 지니고 있는 연금공단의 성격을 고려하여 현행 지방세의 부과는 연금공단의 기관 특성을 고려하지 않은 것으로 보여진다. 마지막으로, 가장 공적인 업무를 수행하고 있는 기관임에도 불구하고 타 비영리법인에서는 아직도 지방세특례가 존재하고 있는 실정이다. 따라서 사학연금공단은 공적인 업무를 수행하는 기관임에도 불구하고 지방세 특례가 폐지되었으므로 이에 대한 지원이 필요하다. 본 연구는 사학연금공단의 연금재정 안정화와 함께 과세원칙에 부합하도록 운용단계에서 반드시 필요한 연금관리 조직의 지방세 특례 부여 방안을 모색함으로써 사학연금공단의 지방세 지원의 타당성과 개선방안을 제시했다는 점에서 연구의 의의가 있다.

• International Area Studies Review
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• v.16 no.1
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• pp.3-27
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• 2012

This paper adopts recently developed panel unit root test that is cross-sectionally robust. Cointegration test is also used to find whether regional house prices are in line with gross regional domestic production (GRDP) in the long run in Korea during 1989-2009. Based on the panel VECM and the panel ARDL models, we examine causal relationships among the variables and estimate the long-run elasticity. We find evidence of cointegration and bidirectional causal relationships between regional house prices and GRDP. The results of long-run estimates, using both fixed effect and ARDL models, show that house prices positively and significantly influence on the GRDP and vice versa. Together with these results, the findings of ARDL-ECM imply that there exists a long-run equilibrium relationship between house prices and regional economic variables even if there is a possibility of short-run deviation from its long-run path.