• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2010.09a
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• pp.291-291
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• 2010

Emerging global economic growth and increasing demand for energy supply and demand imbalance and the excessive use of fossil fuels existing the rapidly increasing greenhouse gas emissions and resource depletion of global energy crisis is deepening. Accordingly, improvement of living conditions around and through the natural ecological preservation and the need for a comfortable life for the meeting the importance of energy management and consumption are emerging. Many in the field of architecture for energy-saving measures and conducts research and analysis from the early stages to verify the energy performance of BIM (Building Information Model) technology development and commercialization through the building's energy performance to an objective technology forecasts Analysis of the existing building energy performance in waste management also possible that "BIM-based green building process, the possibility of" suggested. In this study, BIM through the analysis of information using the structures for the management of waste, energy and physical data collected by Mapping it can effectively plan resources for recycling were analyzed.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2015.11a
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• pp.32-33
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• 2015

Depending on the industrialization, construction market has grown buildings are based on concrete will continue to increase. But the problems of environmental pollution come to the fore with the indiscriminate use of concrete and rapid development. In addition, carbon dioxide(CO₂) in the process of producing cement being emitted a large amount of has been caused a serious problem of environmental pollution. This trend is being actively conducted research to reduce the use of cement. In this study, eco-friendly materials, such as flats, Blast-furnace slag by mix and cement review the mechanical characteristics of the mudflats eco-friendly cement mortar to reduce the usability of the review were seen as a green building material.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.73
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• pp.43-63
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• 2017

Amidst dynamic business environment, creating competitive advantage, source of competitiveness, is a critical issue for international port operations. To overcome limitations of prior studies adopted cross-sectional approach, this study reviews a way to continually sustain and create competitive advantage, based on the case of Busan port in South Korea. Development plans, operations and management practices from2005 to 2014 were investigated and reviewed. Results revealed that enhancement of infrastructure, new engine to sustainable growth, green and safety, and partnership enhancement were a source of creating competitive advantage. The results help theoretical advances on competitiveness and its durability, and provide useful insights for creating competitive advantages and future improvement in international port operations.

• Advances in Energy Research
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• v.5 no.1
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• pp.57-64
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• 2017

Electricity is basic need for country development. But at the present time proper planning and policy is require at high pace for power generation network extension due to the increasing population growth rate. Present study aimed to analyze the present and future demand for electricity at household level in Province of Balochistan of Pakistan via simulation modeling. Data of year 2004-2005 was used as baseline data for electricity consumption to predict future demand of electricity at both rural and urban domestic level up to subsequent 30 years, with help of LEAP software. Basically three scenarios were created to run software. One scenario was Business-As-Usual and other two were green scenarios i.e., solar and wind energy scenarios. Results predicted that by using alternative energy sources, demand for electricity will be fulfill and will also reduce burden on non-renewable energy sources due to the greater potential for solar and wind energy present in Balochistan.

• 한국정보교육학회:학술대회논문집
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• 2010.01a
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• pp.235-240
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• 2010

지구온난화는 글로벌 최우선 과제로 급부상하고 있다. 지구온난화의 원인인 $CO_2$와 에너지 절감을 위해 현재 그린 IT 개념에 대해 활발히 논의 중이며 국가뿐만 아니라 기업에서도 그린 IT를 위해 다양한 노력을 하고 있지만 아직까지 교육기관의 그린 IT 관련 연구는 시작단계에 불과하다. 현재 초 중등학교에서 교육정보화 사업에 의한 IT 장비의 증가로 에너지 소비 및 $CO_2$ 배출 증가가 가속화되고 있기 때문에 IT를 도입하는 데 있어 그린화가 절대적으로 필요하다. 따라서 현재 출시되고 있는 그린 IT 제품 현황을 조사하여 학교에 보급된 IT 제품의 그린화 현황을 파악한다. 국내 외에서 설계 및 생산되는 IT 제품에 부여하는 각종 규제 및 지침과 IT관련 규제와 친환경적 속성을 평가하여 부여하는 환경마크제도 등을 조사 분석하여 이를 토대로 우리나라 초 중등학교에서 그린 IT 제품 도입 시에 필요한 가이드라인을 개발하였다.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.4
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• pp.733-739
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• 2010

We developed to have an automatic transferring function of a two-motors-driven electrical scooter for women or seniors to use conveniently it since it has been previously to operate it in manual only. The function would be implemented by using master and slave micro-control units(MCU) in the system with the given input and output signals. The simulation and test of the system results show that the transition conditions of either higher accelerating speed and/or higher torque are demonstrated at the worst conditions, which means that the transition points might be set either at the 70% of accelerating speed or from the 100% of load torque. The developed equipment is very useful and has good performance in the real test and would be used for top brand and might be applicable to any other types of green cars.

• Journal of the Korean Society for Nondestructive Testing
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• v.12 no.4
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• pp.9-17
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• 1993

Three types of piezoelectric sensors to detect acoustic emission signals were developed and characterized. Epicentral displacement and velocity of a plate to have infinite boundary were calculated by convolution between a Green's function and a simulated source time function to show parabolic rising characteristic. The sensor calibration system set up was composed of a steel plate, a glass capillary, an indentor and a load cell indicator The transient elastic signals were detected by the sensors. The results were compared with the theoretical results and Fast Fourier Transformed. As the results, the sensor fabricated using a disk shape of a piezoelectric PZT element showed resonant characteristics. The sensors fabricated using a conical shape PZT element and a PVDF polymer film showed the wide band characteristics for particle displacement and velocity, respectively. The calculated results showed good agreements with the transient responses in the cases of the wide band sensors and it was confirmed that the simulated source time function had been properly assumed.

• Journal of Hydrogen and New Energy
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• v.21 no.4
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• pp.321-327
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• 2010

Current rechargeable battery cannot provide high energy density and the operational durations required. But linear engine/generators provide high energy density for portable power applications because fuel is more high density. In this paper, we suggest that basic design of powerpack using linear engine for assisting power output. Efficiency is relatively high because linear engine don't have crank mechanism compared with rotary engine. We made prototype engine and had experiments to know moving characteristic about the Linear Engine. It was possible to operate velocity at 50 Hz at the firing and pressure in cylinder was 16bar.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2012.11a
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• pp.209-210
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• 2012

Cement is an essential material for social infrastructure. Cement production process for cement itself is energy-intensive and requires a large amount of natural resources for fuel and raw materials. This study is to development of recycled cement from waste concrete powder in manufacturing process of recycled aggregate concrete. Recycled cement is low carbon and green growth materials concept for eco friendly construction environment. From the test results, waste concrete powder is same chemical proportion regardless of manufacturing process of recycled aggregate concrete.

• Journal of Environmental Impact Assessment
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• v.20 no.1
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• pp.79-87
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• 2011

In this study, we investigated the effect of carbon sequestration and sink on the environmental impact assessment of a housing redevelopment project. Through the case study, we found that the amount of carbon sequestration and sink increased with the increase of the area of park and green space and, furthermore, the amount of carbon emission decreased slightly with implementation of district heating and renewable energy. Therefore, it is necessary for its land use plan to be established to minimize the amount of net carbon emission, taking account of both the amount of present carbon emission and the amount of the future carbon sink, sequestration, and emission.