• 대기
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• 제24권4호
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• pp.515-522
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• 2014

In this study it is attempted to estimate the possible change in energy use for residential and commercial sector in Korea under a future climate change senario. Based on the national energy use and observed temperature data during the period 1991~2010, the optimal base temperature for determining heating and cooling degree days (HDD and CDD) is calculated. Then, net changes in fossil fuel and electricity uses that are statistically linked with a temperature variation are quantified through regression analyses of HDD and CDD against the energy use. Finally, the future projection of energy use is estimated by applying the regression model and future temperature projections by the CMIP5 results under the RCP8.5 scenario. The results indicate that, overall, the net annual energy use will decrease mostly due to a large decrease in the fossil fuel use for heating. However, a clear seasonal contrast in energy use is anticipated in the electricity use; there will be an increase in a warm-season demand for cooling but a decrease in a cold-season demand for heating.

• 환경영향평가
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• 제22권1호
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• pp.1-17
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• 2013

Carbon sequestration on soil is one of the counter measurements against climate change in agricultural sector. Increasing incorporation of organic fertilizer would increase soil organic carbon (SOC) but it could bring high potential of nutrient losses which would result in water quality degradation. In this paper, literature review on soil organic carbon behavior according to agricultural management is presented. The results of field experiment to identify the effect of organic and commercial fertilizer applications on SOC and runoff water quality were also presented. Field experiment confirmed increased SOC and nutrient concentrations in runoff water as application rate of organic fertilizer increase. The potential use of simulation model to develop best agricultural management practice considering carbon sequestration and water quality conservation at the same time is discussed and monitoring and modeling strategies are also suggested to achieve the goal.

• 정보과학회 컴퓨팅의 실제 논문지
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• 제21권1호
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• pp.40-45
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• 2015

최근 온라인 소셜 네트워크의 성장에 따라, 영향력 최대화 기법을 활용한 다양한 마케팅 기법들이 소개되고 있다. 하지만 지금까지 네트워크 구성이 감춰진 경쟁 집단들이 존재하는 환경에서 영향력 최대화 문제를 해결하려고 시도한 기법은 제안된 적이 없었다. 본 논문에서는 아군 집단과 경쟁 집단 들이 존재하는 소셜 네트워크 환경에서 경쟁 집단에 영향력을 가장 최대화하는 알고리즘을 제안한다. 본 논문에서 제안하는 알고리즘은 소셜 네트워크의 속성들 중 중간 중심성, 클러스터링 계수, 지역적 연결도로와 연결, 그리고 3인조 폐쇄특징 등을 효과적으로 활용한다. 실험을 통하여 본 논문에서 제안하는 알고리즘이 기존 알고리즘보다 경쟁 집단에의 영향력을 더 확산할 수 있음을 확인하였고, 결론적으로 2배의 성능 향상을 보여 주었다.

• 한국항만경제학회지
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• 제35권2호
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• pp.37-60
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• 2019

항만연관산업과 최저임금간의 생산성 및 고용효과에 대한 상관관계를 분석한 결과, 그 효과는 매우 미미한 것으로 나타났다. 그러나힝민연관산업의 상용근로자와 임시근로자, 자영업자 및 기타 근로자에 대해서는 다소 차이를 보이고 있다. 즉 상용근로자는 다소 안정적인 반면에, 임시직과 자영업자에게는 다소 부정적인 효과를 미치는 것으로 나타났다. 최저임금위원회에서 최저임금의 인상은 노동시장에서 소득효과와 대체효과 간의 상호작용에 의하여 안정적인 모습을 보이고 있다. 항만연관산업은 최저임금 인상이라는 변수보다 오히려 세계적인 경기불황, 국내 경기의 변동성에 더 영향을 받는 것으로 분석되었다.

• The Journal of Asian Finance, Economics and Business
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• 제9권6호
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• pp.23-32
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• 2022

This paper examines the effects of regulatory capital on a bank's profitability and risk. We employ annual data from Vietnamese commercial banks from 2005 to 2020 and use the dynamic GMM regression method to address the potential endogeneity issue, more suitable for panel data with relatively low time dimensions. Our panel regressions indicate that higher regulatory capital would significantly improve the bank's profitability and lower the bank risks. In particular, a one percent increase in the regulatory capital would significantly increase the bank's return on assets by 1.9%. We further explore the heterogeneous impacts of regulatory capital on the Vietnamese bank's performance across bank characteristics. We find that smaller, non-state-owned and non-listed banks would benefit from stringent regulatory capital requirements. The improvements in bank performance are mainly driven by reductions in the risk premium of the banks, resulting in lower funding costs and higher profitability. These findings are essential since Vietnam, as an emerging market, has only implemented the Basel II reform recently on a stable and fast-growing background rather than as a reaction to the global financial crisis. Thus, our empirical results support stringent regulatory capital in emerging countries to ensure a stable banking sector and boost economic growth.

• The Journal of Asian Finance, Economics and Business
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• 제10권2호
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• pp.321-331
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• 2023

The radical Coronavirus (COVID-19) has swiftly unfolded everywhere globally; it continues to unfold uncontrollably and critically, affecting all economies. The pandemic is not only a health issue but also has distinct effects on the global economy and enterprises. The impact of this novel Coronavirus is also well-documented in the financial sector. This study aims to investigate the impact of COVID-19 on corporate governance and banks' financial performance. Moreover, this study also examines the impact of corporate governance on banks' performance in Bangladesh. The study uses return on equity, return on assets, non-performing loans, return on investment, and earnings per share to measure the performance of the banks. And characteristics of corporate governance are measured by board size, number of independent directors on the board, number of female directors on the board, number of board meetings, and number of members in the audit committee. The study uses descriptive statistics, correlation analysis, t-test, and panel regression analysis. The study finds that COVID-19 significantly impacts the banks' performance and some corporate governance characteristics. The study also reveals that corporate governance significantly impacts the financial performance of commercial banks. The findings of this study suggest that banks should concentrate more on corporate governance.

• 한국항공우주학회지
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• 제46권12호
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• pp.1056-1069
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• 2018

미 트럼프 행정부는 2018년 5월 24일 상업적 우주활동을 촉진하기 위한 규제개혁방향을 담은 우주정책명령 SPD-2(Space Policy Directive-2)를 발표하고, 뒤이어 6월 18일 우주상황 관리 정책에 관한 행정명령 SPD-3를 발표했다. 이 행정명령은 주요 우주 분야에 대한 개혁조치를 담고 있는데, 이 정책은 2017년 6월 재구성된 국가우주위원회(National Space Council: NSC)가 성안한 개혁 권고안을 대통령이 승인한 것으로 연방정부의 강력한 개혁추진을 위한 가이던스를 제공한다. 상업우주활동개혁정책은 앞서 2017년 12월 18일 발표된 국가안보전략(National Security Strategy)의 큰 틀에서 경제적 번영과 국가안보를 동시에 달성하기 위한 노력으로 이해할 수 있다. 상업적 우주활동을 촉진함으로써 미국의 국익을 달성하고자 하는 미국의 정책과 입법은 우주활동을 규율하는 우주조약을 위반한다는 우려와 논란을 불러일으킬 수 있다. 이에 국제사회는 미국의 상업우주개혁정책에서 노정되는 법적 쟁점에 대한 국제적 논의를 통해 우주기술의 발전과 상업화 진전에 맞는 보편적 국제 규범을 형성하기 위한 노력을 가속화해야 한다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.808-811
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• 2006

The KOMPSAT-2 was developed by KARI and it was successfully launched from Plesetsk, Russia on 28th July 2006. The Korean government decided the commercialization of the KOMPSAT-2 image data and direct reception services worldwide. SPOT Image, based in Toulouse (France) was selected by KARI through an international open bidding as a foreign company for the KOMPSAT-2 image promotion over the entire world except the territory of Republic of Korea including the North Korea, the United States of America, UAE, Saudi Arabia, Kuwait, Qatar, Oman, Yemen, Egypt, Iran, Iraq, Jordan, Lebanon, and Syria. KAI (Korea Aerospace Industry Ltd.) is an engaged Korean company for this area. KARI has responsibility to operate the satellite, data acquisition, archiving for the worldwide commercialization. For the processing and delivery of the KOMPSAT-2 image data to the users of KAI and SPOT Image, KAI has the binding contract with KARI. So KAI has the responsibility for the commercial ground station operation such as user support, data processing, and the data delivery. The KOMPSAT-2 ground station is hosted in KARI, so KARI has developed the concept of KOCUST (KOMPSAT-2 Commercial User Support Team) jointly with KAI to support the data processing and delivery as KOMPSAT-2 developer and satellite operator. The main purpose of the KOCUST is to support the operational activities to provide the data and service quality to satisfy customers. KOCUST will be organized by the members of KARI and KAI together. KARI members will mainly take the role of KOCUST coordination, data processing and user support in a public sector. KAI members are going to take user desk, data validation and delivery et cetera, which are related with users. This paper describes a summarized concepts of KOCUST like organization, dedicated tasks of each part and work flow of daily operation.

• 기술혁신연구
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• 제5권1호
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• pp.206-222
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• 1997

The conventional analysis with which justifies government intervention of the private sector's innovation activities is the market failure approach. According to such analysis, fund allocation through autonomous market mechanisms is not optimal in technology financing because of the disparity between the desirable level of investment for society as a whole and that for private firms. To optimize the fund allocation, public policies such as subsidy, preferencial loan and venture capital investment programs are designed for technology development projects performed by private firms. They, however, have not been effective in increasing private investment for such projects. In most cases, it was found that little considerations given to the relationship between uncertainty embodied in technology development projects and each types of financing. With respect to optimizing fund allocation, technology development projects should be financed by different means according to their probability of success and the expected value of technology. Employing various theoretical models on financing decision-making we verify here that technology development projects to be supported by commercial banks or venture capital institutions is limited contingent upon levels of uncertainty adn expected value. Under the assumption that financial institutions are risk averse, loan or investment can be available only if the probability of success of the project is higher than the probability premium and the current market rate of interest. Therefore, the projects that have lower probability of success and/or small expected return are excluded from commercial loan or investment programs. However, the remaining projects, whose probability of success is low but with high expected return, may be applied under government subsidy programs. To achieve optimality of fund allocation and to activate technology financing, we conclude that there should be a systematic division of role among financial institutions including government commercial banks, and venture capital institutions.

• 문화기술의 융합
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• 제10권2호
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• pp.459-463
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• 2024

자영업자의 빈번한 폐업은 국가적인 경제 손실을 동반한다. 특히 외식업종이 가장 높은 폐업률을 보이기 때문에 외식업종의 상권 변화를 예측하여 업체의 생존에 도움을 주는 것이 필요하다. 외식업종의 생존율과 폐업률에 영향을 미치는 요인에 대한 연구는 활발하나, 상권의 변화 정도를 예측하는 연구는 부족한 실정이다. 따라서, 본 연구에서는 상권 변화에 초점을 맞추는 연구를 하고자 한다. 이를 위해 서울시 행정동별 상권 변화를 예측하는 딥러닝(Deep Learning) 모델을 설계한다. 첫째, 2023년과 2022년 2분기의 상권 변화와 관련된 변수를 수집한다. 둘째, 1년간의 등락 정도를 백분율로 환산한 후, 증강 단계를 거친다. 셋째, 딥러닝 모델을 활용하여 상권 변화를 예측하는 모델을 제안한다. 향후 본 연구를 고려한 외식업종 지원정책은 상권의 질적 성장 및 경제 성장에 도움이 될 것으로 기대한다.