• Journal of Environmental Science International
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• v.21 no.7
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• pp.787-795
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• 2012

The purpose of this study is to synthesize transition metal doped mesoporous silica catalyst and to characterize its surface in an attempt to decomposition of $N_2O$. Transition metal used to surface modification were Ru, Pd, Cu and Fe concentration was adjusted to 0.05 M. The prepared mesoporous silica catalysts were characterized by X-ray diffraction, BET surface area, BJH pore size, Scanning Electron Microscopy and X-ray fluorescence. The results of XRD for mesoporous silica catalysts showed typical the hexagonal pore system. BET results showed the mesoporous silica catalysts to have a surface area of 537~973 $m^2/g$ and pore size of 2~4 nm. The well-dispersed particle of mesoporous silica catalysts were observed by SEM, the presence and quantity of transition metal loading to mesoporous surface were detected by XRF. The $N_2O$ decomposition efficiency on mesoporous silica catalysts were as follow: Ru>Pd>Cu>Fe. The results suggest that transition metal doped mesoporous silica is effective catalyst for decomposition of $N_2O$.

• KIEAE Journal
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• v.15 no.4
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• pp.77-84
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• 2015

Purpose: In 2008, As the green growth policy was presented, Green Building is made any effort to propagation. In this paper, the respective technologies that are able to considerably reduce the energy demands for heating, cooling, hot-water, lighting and ventilation among the variety of technologies were selected. Method: Design factors such as (1) External insulation, (2) Triple glazing window, (3) LED lighting, (4) External venetian blind, (5) Geothermal and (6) Heat recovery ventilator were derived. In addition, energy saving effects in terms of energy demand, energy consumption and energy cost were investigated using EnergyPlus, building energy analysis tool. Result : The results were as follows. (1) It can be seen that high insulated triple glazing window, heat recovery ventilator and external insulation technology is excellent for energy demand. (2) Unlike energy demand, saving effect of energy consumption and energy cost was shown in order of Geothermal > Triple Window > Heat recovery Ventilation> Insulation> LED Lighting > EVB Blind.

• Journal of Climate Change Research
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• v.9 no.4
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• pp.435-443
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• 2018

Climate technology applied to address climate change requires a comprehensive review such as environmental and social acceptability in addition to economic feasibility. Not only mitigation and adaptation technologies, but also integration of climate technologies into a business model with other relevant technologies including ICT, finance, and policy instruments could enhance technical, economic, and environmental performances to respond to climate changes. However, many climate projects (and business models) are currently not designed to consider adequately complex climate?related issues. In addition, there is a lack of research on assessment systems that can comprehensively evaluate business feasibility of such models. In this study, we developed a system consisting of nine major indicators in four fields to assess climate technology-based business models. Each indicator was weighed using the analytic hierarchy process (AHP) for systematic assessment of business models. The process can be utilized as a tool to guide improvement of climate technology business models.

• Ecology and Resilient Infrastructure
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• v.3 no.2
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• pp.92-99
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• 2016

This study developed a verification and certification method of technologies of green infrastructure (GI) and low impact development (LID) that gained interest recently. The outdoor testbed used in this study consisted of a building type, a road type, a parking lot type, a rain garden type and a bioretention type. Indoor test facilities were ready for testing using hydrology efficient analysis, pavement and soil analysis and water environment analysis. The development of outdoor and indoor test facilities were used to certify the efficiency of GI & LID technologies, and this was expected to contribute to the activation of the related projects by providing reliable data for the application of GI & LID techniques.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.309-312
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• 2016

Green Internet of Things (IoT) is the study and practice of eco-friendly sustainable computing. The basic goal of green computing is to reduce the use of materials and maximize energy efficiency with reliable and secure communications. The paper presents various technologies and issues regarding green IoT. It also studies the green Information and Communication Technology (ICT) such as green M2M, green Cloud Computing (CC), and green Data Center (DC). In addition, this paper mentions about the reliability in IoT Communication and and issues to achieve green IoT communication by applying efficient activity scheduling technique for energy saving. Finally, we propose the green IoT-Home Service (GIHS) model which provides efficient energy management in home automation system.

• Journal of Korea Technology Innovation Society
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• v.13 no.2
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• pp.310-331
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• 2010

Recently, US, EU and major development countries, including Korea, have set green growth strategy the for national robust economic growth. Green growth strategy was also adopted as economic stimulus policy. Korea also have established some policies for green growth such as Green Growth National Strategy and 5-years Plan. Thought the SMEs play an important role as the innovative driver that can supply material and components for final products, there are few policies for joining green growth strategy. So, the purpose of this paper is to explore the current extent of public procurement for technology-development products and propose the betterment of it. Firstly, we analyzed the public procurement-policies of major countries to kinds of policy-purposes and types including Korea. and then we deducted the needs to policy utilizing the public procurement for joining the SMEs to green growth strategy. Second, we proposed that the objects of purchase conditional public procurement policy be extent to the pre-commercial technologies. The pre-commercial technologies could be performed further R&D by some other compaines or pubic institutes. Considering the natures of green technology-such as quasi-public-, this improvement would be helpful for SMEs which could create initial-marketplace and sales-references.

• Journal of Digital Convergence
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• v.10 no.8
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• pp.233-237
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• 2012

The technologies of information communication regions are progressing in rapidly. These technologies in today are used in various industry regions. We called it smart fusion. There are various regions such as smart car, smart green city, and smart TV, smart medical industries. Therefore, we described trends and future of smart green city in this paper.

• Journal of Korea Technology Innovation Society
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• v.2 no.1
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• pp.104-117
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• 1999

The R&D paradigm for the Materials Technologies involving Environmental Consciousness(MTEC) is sought in this paper with an emphasis on the background and importance of the METC. In this paper the MTEC is defined as "Green Materials Technology", and the Green Materials Technology is classified into four categories based on life cycle of the materials; \circled1Ecomaterials technology(materials design), \circled2Envimatec technology (manufacturing process), \circled3Materials life technology (use & maintenance) and \circled4Materials recycling technology (waste disposal). Each these four categories was introduced. In conclusion, the main R&D field and strategies for the four categories of the Green Materials Technology were suggested.

• KIEAE Journal
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• v.6 no.2
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• pp.59-66
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• 2006

Green Roof Systems are embossed that realize ecological architecture as a substantially alternative plan. So, a Purpose of the study is seeking to optimize expectation effect through the Green Roof System. we set possible object and propose the prototype on the basis of the existing Green roof System technologies. We visualize a proposed Prototype apply various materials and methods. and we analyse the effects of Green Roof System upon our City climate with use energy efficiency comparison the Green roof system with the Concrete Rooftop. We'll Provide the low data for The prospects of City climate improvement through the a ripple effect on Green Roof System and for activation of Green Roof Technology.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.05a
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• pp.801-810
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• 2015

With the international community's efforts to respond to climate changes progressing in the world, Green IT technologies have also developing rapidly. As green IT technologies against climate change has emerged as the agenda of social sciences, the concept of green IT has evolved into two types: greening of IT and greening by IT. In this context, this study reviewed in depth green IT research trends as well as concepts of greening of IT and greening by IT to respond to climate change. Furthermore, it proposed a life cycle assessment (LCA) as an indicator for assessing green IT. The results of this study are expected to contribute to solving political problems with green IT and continuing research in the climate change era. They are also expected to make a contribution to the development of IT industry in Korea by presenting the concepts of greening of IT and greening by IT.