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심재훈(Jaehun Sim) 한국산업경영시스템학회 2021 한국산업경영시스템학회지 Vol.44 No.1
As a nation experiencing rapid economic growth, South Korea and its government have made a continuous effort toward efficient research investments to achieve transformation of the Korean industry for the fourth industrial revolution. To achieve the maximum effectiveness of the research investments, it is necessary to evaluate its funding’s worth and default risk. Thus, incorporating the concepts of the Black-Scholes-Merton model and the Greeks, this study develops a default-risk evaluation model in the foundation of a system dynamics methodology. By utilizing the proposed model, this study estimates the monetary worth and the default risks of research funding in the public and private sectors of Information and Communication technologies, along with the sensitivity of the R&D economic worth of research funding to changes in a given parameter. This study finds that the public sector has more potential than the private sector in terms of monetary worth and that the default risks of three types of research funding are relatively high. Through a sensitivity analysis, the results indicate that uncertainty in volatility, operation period, and a risk-free interest rate has trivial impacts on the monetary worth of research funding, while volatility has large impacts on the default risk among the uncertain factors.
고재훈(Jaehun Ko),강경우(Kyong-Woo Kang),곽태균(Tae-Kyun Kwak),심보석(Bo-Seok Sim),박인표(In-Pyo Park),서정호(Jeong-Ho Seo) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
In the case of a photovoltaic power generation system using a non-isolated inverter, an arc or fire may occur if a DC circuit ground fault occurs. In order to protect human life and property from such fires, the DC circuit protection regulations were newly established in the Technical Regulation in Eelctricity Business Act, and the enforcement began on September 1, 2021. In this paper summarizes the relevant regulations and related requirements.