• 대한지리학회지
• /
• 제45권1호
• /
• pp.75-94
• /
• 2010

녹색성장은 2005년 이후 논의가 집중적으로 이뤄진 환경과 경제의 조화를 통한 지속기능사회를 건설하기 위한 전략이다. 녹색성장의 개념은 유엔에 의하여 정립되었으며, 아시아 태평양 국가들과 OECD의 새로운 발전 패러다임으로 수용되었다. 이 개념은 2008년 발생한 지구적인 경제 위기의 와중에서 지속가능한 사회를 지향하는 경기 부양 정책을 의미하는 그린뉴딜로 다시 정의되었다. 이에 반하여 한국의 국가 정책 기조로 채택된 녹색성장은 에너지 효율성을 제고하고 관련 기술을 강화하는 경제 성장의 새로운성장 동력으로서의 녹색을 강조하는 한계점을 지니고 있다. 본 고에서는 해외에서 통용되는 녹색성장의 개념과 한국의 녹색성장의 개념을 비교검토하여 기후변화등 환경의 위기에 대응하고 사회적 환경적 지속가능성을 증진하여 지속가능한 사회를 지향하는 발전 정책으로 정의하였다. 지형학은 자연 재해 등에 대한 기후 변화의 영향에 대한 대비 부분에 상당한 기여를 할 수 있을 것으로 생각된다. 특히 재해에 대응하기 위한 지형학도의 작성, 산지 하천의 홍수 관련 연구, 고재해 연구, 해안의 위험성에 대한 연구 등은 시급히 이뤄져야 할 것이다.

• 한국생활환경학회지
• /
• 제21권6호
• /
• pp.959-964
• /
• 2014

Energy performance of building envelope components, including external walls, floors, roofs, windows and doors, is crutial for determining how much energy is required for heating and cooling in a building. Among various building technologies, a green roof system can be a good option for reducing heat gain and loss in new buildings as well as existing buildings for green remodeling. This paper evaluates the performance of green roof systems according to soil depth and Leaf Area Index (LAI) for existing buildings. It also attempts to quantify the energy saving effects on new and existing buildings with different insulation levels. Thermal performance of green roofs is mainly dependent on soil thickness and LAI. Installation of green roofs in deteriorated existing buildings can lead to improvements in roof insulation, due to the soil layer. An increase in soil depth leads to a decrease in heating load, regardless of conditions of vegetation on the green roof. Larger LAI values may reduce cooling loads in the cooling season. Installation of green roof in deteriorated existing buildings showed bigger energy saving effect in comparison to a case in new buildings. A simulation study showed that the installation of green roof systems in deteriorated existing buildings with low insulation levels, due to low thermal performance requirements when constructed, could improve the energy performance of the buildings similar or better to the peformance on new buildings with the most updated insulation standard. Thus, when remodeling a deteriorated building, green roofs could be a good option to meet the most recent energy requirements.

• Journal of Species Research
• /
• 제6권1호
• /
• pp.42-50
• /
• 2017

Coccoid green algae collected from March to November 2015 from 79 freshwater ecosystem sites throughout South Korea, including lakes, ponds, swamps, streams, and rivers, were identified using light microscopy. A total of 218 taxa were identified, among which 11 were new species records in Korea; these 11 species were found at four sites (Hanagang River, Chukdong reservoir, Chukdong fishery, and Deokjin reservoir). The new species recorded were Fotterella tetrachlorelloides, Trochiscia naumannii, Keriochlamys styriaca, Placosphaera opaca, Siderocystopsis fusca, Siderocelis oblonga, Siderocelis estheriana, Pachycladella umbrina, Pachycladella zatoriensis, Crucigenia mucronata and Scenedesmus sempervirens.

• Bulletin of the Korean Chemical Society
• /
• 제31권9호
• /
• pp.2531-2536
• /
• 2010

Density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations have been employed to investigate the molecular structures and absorption spectra of two dyes containing diphenylaniline and 4-diphenylamino-diphenylaniline as donor moiety (TPA1 and TPA3). The geometries indicate that the strong conjugation is formed in the dyes. The electronic structures suggest that the intramolecular charge transfer from the donor to the acceptor occurs, and the electron-donating capability of 4-diphenylamino-diphenylaniline is stronger than that of diphenylaniline. The computed highest occupied molecular orbital (HOMO) energy levels are -5.31 and -4.90 eV, while the lowest unoccupied molecular orbital (LUMO) energies are -2.29 and -2.26 eV for TPA1 and TPA3, respectively, revealing that the interfacial charge transfer between the dyes and the semiconductor electrode are electron injection processes from the photon-excited dyes to the semiconductor conduction band. Furthermore, all the experimental absorption bands of TPA1 and TPA3 have been assigned according to the TDDFT calculations.

• 농업과학연구
• /
• 제38권1호
• /
• pp.115-120
• /
• 2011

20% of total energy use to sustain temperature of building inside. In this reasons, researchers effort to improve the thermal insulation capacity with new wall system. Using appropriate materials and consisting new wall system should considered in energy saving design. OSB(Oriented strand board), Larch lining board used to consist wall system. $2{\sim}6$ Larch lining board has tongue & groove shape for preventing moisture. Comparing with gypsum board and green timber lining board as interior sheathing material, temperature difference of Green timber wall system was bigger than temperature difference of gypsum board wall system. This aspects indicate that Green timber wall system was revealed higher thermal insulation property than gypsum board wall system. Gypsum board portion transfer heat easily because temperature difference gradient of gypsum board wall system was smaller than OSB wall system. Total temperature variation shape of G-4-S and G-6-S show similar model but, temperature variation shape in green timber wall portion assume a new aspect. The purpose of this study was that possibility of thermal insulation variation and new composition of wall system identify to improve thermal insulation performance. In the temperature case, this study shows possibility of improving thermal insulation performance. Humidity, sunshine and wind etc. should considered to determine building adiabatic properties.

• 한국실천공학교육학회논문지
• /
• 제4권1호
• /
• pp.119-131
• /
• 2012

본 연구에서는 미국의 그린직업훈련체계 및 정책동향을 연방정부 및 주정부 차원에서 분석하고, 다양한 그린스킬 수요에 대응한 수준별 훈련프로그램체계와 관련 사례들을 조사하였다. 이러한 조사 분석에 기반 하여 우리나라 신성장동력분야의 향후 인력양성 정책방향을 다각도에서 제시하였다. 신성장동력분야는 우리나라의 경쟁력을 제고시킬 고부가가치 산업이지만, 첨단 기술력이 요구되고 투자 위험성이 크며 신속한 시장대응이 필요하기 때문에 적절한 인력공급체계를 갖추기 어려운 실정이다. 따라서 본 연구결과가 정부 인력양성정책의 문제점을 찾고 개선방안을 모색하는데 도움이 될 것으로 기대한다.

• Journal of Information Technology Applications and Management
• /
• 제27권5호
• /
• pp.35-47
• /
• 2020

Global waste has become a global issue and we can see the new trend of discovery businesses established to focus on solving the waste problem using new renewable energy technology and the circular economy business model. This paper aims to study factors that impact green entrepreneurship in Thailand, such as environmental concern, organizational environment, founder demographics, education background, entrepreneurship awareness, as well as external factors of a business. The study analyzes the data from three qualitative in-depth interviews with green entrepreneur founders who started the businesses in polymer up-cycling, waste management, and renewable energy. The study finds overseas educational background to be one of the key main drivers for the entrepreneurial courage to decide to pursue a new business venture. By having the exposure toward the different culture, three entrepreneurs hands-on experiential learning through three key drivers who are composed of the can-do attitude, the willingness to be self-employed, and the way of seeking for the freedom to express their passions.

• 한국분말재료학회지
• /
• 제18권5호
• /
• pp.406-410
• /
• 2011

Green strength is an important property of powders since high green strength guarantees easy and safe handling before sintering. The green strength of a powder compact is related to mainly mechanical and surface characters, governed by interlocking of the particles. In this study, the effect of powder surface roughness on the green strength of iron powders was investigated using a transverse rupture test. Three-dimensional laser profiler was employed for quantitative analyses of the surface roughness. Two different surface conditions, i.e. surface roughness, of powders were compared. The powders having rough surfaces show higher green strength than the round surface powders since higher roughness leads increasing interlocked area between the contacting powders.

• 한국수소및신에너지학회논문집
• /
• 제35권1호
• /
• pp.1-13
• /
• 2024

Hydrogen is emerging as an essential material for carbon neutrality. In particular, Korea needs 22.9 million tons of imported clean hydrogen by 2050 to achieve carbon neutrality. However, a large amount of carbon is emitted during the import process, and market regulations are being discussed. This research estimates the carbon emissions of importing green hydrogen from Vietnam, Australia, and the United Arab Emirates to Korea, and calculates imported green hydrogen prices under carbon emission market regulations.

• 한국농촌건축학회논문집
• /
• 제4권2호
• /
• pp.79-92
• /
• 2002

Internationally Present-day, the paradigm in rural community is changing to continually prospering rural community. So, it's time to provide the vision of new rural life. The purpose of this study is to provide the basic plan which can revitalize the rural area and improve the living standards of the inhabitants. The range of this study is restricted to Sam-Sin village in Hadong and from Feb. 2002 to May 2002. We arranged the outline of 'new rural community development project' and investigated the present state of the village by spot survey. Through the study, we suggest green-tea which can increase the life quality of inhabitants and achieve the prosperity of the village at the same time. We expect the results of this study can realize the Green Tourism and establish the identity of village caused by green-tea cultural festival.