• Convergence Security Journal
• /
• v.14 no.4
• /
• pp.101-108
• /
• 2014

Recently, The cloud computing technology is emerging as an important issue in the world and the cloud computing has attracted much attention to the technology about carbon dioxide reduction. However, Unlike to the positive aspects of a cloud computing are included several security vulnerabilities. For this reason, the carbon dioxide reduction of a cloud computing technology has a differences. Therefore, this paper will be analyzed to the carbon dioxide emission factors of a cloud computing through the cloud case studies related $CO_2$ emissions and experiments measured of $CO_2$ emissions a security system. and In the future, this is expected to be utilized as a basis for the security design and performance improvement.

• Environmental and Resource Economics Review
• /
• v.14 no.1
• /
• pp.167-199
• /
• 2005

The following policy implications can be drawn from this study: 1) The Air Pollution Emission Amount Report published by the Ministry of Environment since 1991 classifies industries into 4 sectors, i. e., heating, manufacturing, transportation and power generation. Currently, the usability of report is very low and extra efforts should be given to refine the current statistics and to improve the industrial classification. 2) Big pollution industries are as follows - s7, s17 and s20. The current air pollution control policy for these sectors compared to other sectors are found to be inefficient. This finding should be noted in the implementation of future air pollution policy. 3) s10 and s17 are found to be a big polluting industrial sector and its pollution reduction effect is also significant. 4) The effect of emission coefficient (${\Delta}f$) has the biggest impact on the reduction of emission amount change and the effect of economic growth coefficient (${\Delta}y$) has the biggest impact on the increase of emission volume. The effect of production technology factor (${\Delta}D$) and the effect of the change of the final demand structure (${\Delta}u$) are insignificant in terms of the change of emission volume. 5) Further studies on emission estimation techniques on each industry sector and the economic analysis are required to promote effective enforcement of the total volume control system of air pollutants, the differential management of pollution causing industrial sectors and the integration of environment and economy. 6) Korea's economic growth in 1990 is not pollution-driven in terms of the Barry Commoner's hypothesis, even though the overall industrial structure and the demand structure are not environmentally friendly. It indicates that environmental policies for the improvement of air quality depend mainly on the government initiatives and systematic national level consideration of industrial structures and the development of green technologies are not fully incorporated.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.19 no.4
• /
• pp.315-326
• /
• 2013

This study investigated the temporal-spatial distribution and variations in water quality parameters (temperature, salinity, pH, DO, COD, SPM, DIN, DIP, silicate, TN, TP, and chlorophyll-a) in the coastal area of Jeju, Korea, adjacent to aquaculture ponds (Aewol-ri, Haengwon-ri, Pyosun-ri, and Ilkwa-ri). Data were collected bimonthly from February 2010 to December 2011. A principal component analysis (PCA) identified three major factors controlling variations in water quality during the sampling period. Aquaculture effluent water led to large changes in nutrient levels. The highest nutrient values were observed during the investigation period. The relatively large increase in organic matter at the sampling stations coupled with sea area runoff events during the summer rainy period. Variation in chlorophyll-a concentration was mainly driven by meteorological factors such as air temperature and rainfall in the coastal areas of Aewol and Haengwon. In the coastal areas of Pyosun and Ilkwa, pollution was caused by anthropogenic factors such as discharge of aquaculture effluent water. High nutrient concentrations at the majority of the coastal stations indicate eutrophication of coastal waters, especially within a distance of 300 m and depth of 10m from drainage channels. Coastal eutrophication driven by aquaculture effluent may be harmful inshore. Events such as eutrophication may potentially influence water pollution in aquaculture ponds when seawater intake is detected because of aquaculture effluent water.

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 1996.10a
• /
• pp.75-76
• /
• 1996

• Defense and Technology
• /
• no.8 s.282
• /
• pp.72-83
• /
• 2002

서울을 비롯한 대도시의 자동차에 대한 대기환경 오염물질 배출량은 앞으로도 계속 가속화될 것이며 교통량의 증가에 따른 교통난, 각종 사고유발과 함계 환경오염 문제는 심각한 요인으로 등장할 것이다. 도로에서 자동차는 이제 사고뿐만이 아닌 달리는 오염물질 생산기로서 자동차의 배출가스를 줄이기 위해서는 기술적 연구 못지않게 자동차 생산 및 정비에 종사하는 사람들 그리고 운전자 개개인의 바람직한 운전습관, 운전자세 등의 노력이 매우 중요하다.

• Journal of Climate Change Research
• /
• v.2 no.2
• /
• pp.115-131
• /
• 2011

Out of all the possible actions that can be taken to respond to greenhouse gas reduction, including development of greenhouse gas reduction technology, infrastructure, actions to improve energy saving and efficiency, and offset with carbon emission reductions (CERs), this study shall focus on the investment on CERs. This study will take a look at risks involved with investing in CERs such as UN registration refusal risk and CERs price fluctuation, and will design risk management model which shall be verified. The goal of this paper is to provide optimized CERs investment strategies for different types of investors, such as general trading companies seeking for investment opportunities and financial companies with plans for green products development and investment by preparation for carbon market. It is expected that the global competitiveness of domestic financial companies shall be improved by taking actions on carbon market instead of previous passive response to climate change and that Korea, the number two Carbon Emissions supplier and number one derivatives market in terms of volume, shall be able to lead the worldwide carbon market.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.36 no.11B
• /
• pp.1315-1322
• /
• 2011

Recently, The Problem of Global Warming around the world, is emerging as a very serious environmental problems, and as a way to fix it 'Green IT' is becoming an Issue. In these situations the evolution of network technologies with a various attacks, it appears, add the different security devices and systems are deployed. But, Deployment methods such a network, the performance and security of the internal network will affect on the greater and it will be increase Carbon Dioxide emissions. Therefore, In this paper, it will be to analyze Carbon Dioxide Emissions due to the Performance Degradation Factors of An Inner Network. and In a future, This paper is expected to serve as a valuable Information for the Network Performance and Security improvements and to reduce Carbon Emissions in the Field of IT.

• Journal of the Korean Geographical Society
• /
• v.33 no.2
• /
• pp.209-224
• /
• 1998

이 논문은 공간적 환경연구의 한 시도로서, 폐기물관리의 출발점인 폐기물 배출량의 지역간 차이에 영향을 미치는 요인을 구명하는 것에 목적이 있다. 연구지역은 독일 노르트라인 베스트팔렌주의 396개 게마인데이며, 연구자료로는 폐기물통계, 인구 및 주택센서스 자료 그리고 폐기물처리에 관한 조례가 이용되었다. 분석결과에 의하면 가정폐기물의 1인당 배출량은 지역규모, 인구구조, 가구규모, 가옥유형, 거주공간, 경제구조 등의 지역구조와 가정폐기물의 수거제도 및 처리경로, 분리수거 등의 폐기물 관리대책에 의해서 복합적으로 영향을 받고 있었다. 또한 1인당 가정폐기물 배출량의 지역간 변동을 최대한 설명하기 위해 수행한 다중 직선회귀분석에서 지역구조나 폐기물관리와 관련된 변수들을 포함하는 유의한 회귀모델을 도출하였다. 분석결과가 시사하는 바는 폐기물은 효율적인 관리를 통해 단기간에 감량이 가능하며, 특히 지역구조에 적합한 수집함체계 및 분리수거제도의 도입 등 효율적인 수거제도를 통해 감량효과를 극대화할 수 있다는 점이다.

• KDI Journal of Economic Policy
• /
• v.34 no.2
• /
• pp.173-204
• /
• 2012

This study examines the equilibrium investment on the pollution abatement when firms are facing Cournot competition in the output market while the pollution permit market is perfectly competitive. Unlike standard perfect competition scenario, the abatement investment delivers an indirect effect in which it reduces other firms' equilibrium output. Consequently, compared with the socially optimal level, overinvestment arises. I also overview the potential inefficiencies that imperfect market structure induces under the emission trading scheme, presenting policy implications.

• Korean Journal of Remote Sensing
• /
• v.36 no.2_1
• /
• pp.121-137
• /
• 2020

Data from the Ozone Monitoring Instrument (OMI) satellite and national emission inventories were used in this study to analyze air quality in East Asia and estimate the impact of domestic and foreign emissions on South Korea's air quality, based on which future emissions were predicted. The concentration trends of nitrogen dioxide (NO₂) and sulfur dioxide (SO₂) in East Asia from 2005 to 2015 showed that both substances were highest in North East China (NEC), followed by South East China (SEC) and Seoul Metropolitan Area (SMA). The average SO₂ concentration was 1.63 times higher in NEC than in SMA. Analysis on the ratios of NO₂/SO₂ and NO_x/SO_x provides an indirect picture of the effect of transboundary air pollutants on atmospheric composition in Korea. The concentration ratio of NO₂/SO₂ in all study areas peaked in 2013 and SMA's emission ratio of NO_x/SO_x increased in 2015 by over 22% from 2013. Despite the reduction in domestic emissions, the concentration-to-emission ratios (NO₂/NO_x, SO₂/SO_x) rose gradually, which implies that other factors besides domestic emissions (e.g., foreign sources, lifetime, etc.) influence air quality in SMA. We estimated future emissions of NO_x and SO_x in SMA to be 296.2 and 39.0 ktons in 2025 and 284.4 and 33.8 ktons in 2035, respectively. Application of the inter-comparison techniques of this study to the data from the Geostationary Environment Monitoring Instrument (GEMS) is expected to provide concrete information which can be used to improve national emission inventories and figure out factors and sources that affect domestic air quality.