• 대한기계학회논문집A
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• 제31권3호
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• pp.365-372
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• 2007

Revisited in this paper are Green's functions for unit concentrated forces in an infinite orthotropic Kirchhoff plate. Instead of obtaining Green's functions expressed in explicit forms in terms of Barnett-Lothe tensors and their associated tensors in cylindrical or dual coordinates systems, presented here are Green's functions expressed in two quasi-harmonic functions in a Cartesian coordinates system. These functions could be applied to thin plate problems regardless of whether the plate is homogeneous or inhomogeneous in the thickness direction. With a composite variable defined as $z=x_1+ipx_2$ which is adopted under the necessity of expressing the Green's functions in terms of two quasi-harmonic functions in a Cartesian coordinates system Stroh-like formalism for orthotropic Kirchhoffplates is evolved. Using some identities of logarithmic and arctangent functions given in this paper, the Green's functions are presented in terms of two quasi-harmonic functions. These forms of Green's functions are favorable to obtain the Newtonian potentials associated with defect problems. Thus, the defects in the orthotropic plate may be easily analyzed by way of the Green's function method.

• 상하수도학회지
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• 제29권2호
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• pp.165-169
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• 2015

Green roofs are gaining much interest in many cities around the world due to its multi-purpose effects of water conservation, flood mitigation and aesthetic benefits. However it may cause additional water demand to maintain green plants, which may intensify the current and future water shortage problems. While ordinary concrete roofs and normal green roof drains off rain water, concave green roof system can retain rain water because of its water holding capability. In this study, the water conservation effect of concave green roof was compared to normal roof on #35 building in Seoul National University, Seoul, Korea. For seven rainfall events the amount of stored rainwater and runoff were measured and proved water conservation effect of the concave green roof system. The concave green roof system of which area is 140m2 showed effect of water conservation from 1.8ton to 7.2ton and the most influence factors on water conservation in green roof are rainfall and antecedent day. If this concave green roof is applied to many buildings in the cities, it is expected as a way to water conservation through rainfall storage.

• 한국건설관리학회논문집
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• 제13권5호
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• pp.125-134
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• 2012

건설산업에 있어서 녹색 또는 그린(Green)은 차세대 신 성장동력의 핵심적인 키워드로 부상하고 있다. 녹색건설 경쟁력을 갖추는 것은 건설기업의 생존과 발전을 위해 중요하며 이를 위해 녹색건설 경쟁력 요인에 대한 이해는 필수적이다. 본 연구의 목적은 건설기업이 녹색건설 경쟁력을 확보하기 위해 요구되는 경쟁력 요인을 발굴하고 Gap 분석 기법을 통해 경쟁력 요인의 중요도와 현 수준을 분석하여 주요 특징과 시사점을 도출하는데 있다. 녹색건설 경쟁력 요인에 대한 이해는 건설기업의 녹색건설 전략 수립을 위한 선행 작업이며 동시에 녹색건설 관련 정책 및 제도 수립에 있어 건설기업에게 어떤 동기부여를 해야 하는지를 이해하기 위해 필수적이다. 본 연구를 통해 나타난 주요 결과를 요약하면, 첫째, 녹색건설 경쟁력의 중요도와 현 수준을 분석한 결과 중요도와 비교하여 현 수준이 모두 낮은 것으로 나타났다. 둘째, 녹색건설 경쟁력의 중요도와 현 수준 관점에서 CEO 역량 부문은 큰 격차가 없는 것으로 나타났지만 기업 역량 부문에서는 큰 격차가 있는 것으로 나타났다. 셋째, 녹색건설의 R&D 전략과 녹색건설 협력업체의 보유 및 협업 역량이 중요도와 현 수준의 차이(Gap)가 가장 크게 나타났다.

• 대한가정학회지
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• 제49권1호
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• pp.79-91
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• 2011

The purposes of this study were firstly to explore the practical implications that of 'low carbon and green growth' policy, which is at the top of the Government's agenda provides to family, and secondly to propose some visions for a future based on those implications. The results of this study were as follows: Firstly, in terms of a global perspective, there is now a worldwide trend towards the adoption of 'low carbon and green growth' policies. Secondly, the Government-driven 'green growth policy' demands a total transformation, that is, revolution, not only in terms of our industries, but also in terms of our mentality and ordinary life. Thirdly, the driving force for this life revolution lies in having green life style, and the family is the primary agent for making the green life style a practical reality.

• 자원ㆍ환경경제연구
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• 제17권2호
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• pp.235-254
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• 2008

본 연구는 주택시장 모형을 이용하여 그린벨트 축소의 경제적 효과를 분석하였다. 그린벨트는 개발이 제한된 토지의 한 종류로 소비자 후생에 영향을 미치게 된다. 그린벨트는 토지의 개발을 제한함에 따라 주택의 공급에 영향을 미치게 되며, 또 다른 한편으로는 주거환경에 녹지를 공급해 줌으로써 주거환경을 개선하는 효과가 있다. 따라서 그린벨트의 축소는 주택시장의 공급을 증가시켜 임대료의 하락을 일으켜 소비자의 후생을 증가시킬 것으로 예상되는 반면 녹지를 파괴함으로써 주거환경을 악화시켜 소비자의 후생을 감소시킬 것으로 예상된다. 따라서 그린벨트의 축소로 인한 임대료의 하락 효과가 녹지파괴로 인한 주거환경 악화 효과보다 클 경우 소비자의 후생을 증가할 수 있다. 본 연구에서는 임대료 하락의 효과가 보다 직접적으로 나타나 주거환경 악화 효과보다 커서 그린벨트 해제로 인해 소비자의 후생은 증가하였다.

• 대한안전경영과학회지
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• 제13권3호
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• pp.63-69
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• 2011

As environmental protection is becoming more and more important, green production has become a key issue for almost every manufacturer and will determine a manufacturer can be sustainable in the long term. Therefore a performance evaluation system for green suppliers is necessary to determine the suitability of suppliers to cooperate with the company. While the works on the evaluation and/or selection of suppliers are abundant, those that concern environmental issues are rather limited. The objective of this study is to construct a combined model based on fuzzy analytic hierarchy process (FAHP) and balanced scorecard (ESC) for evaluating green suppliers in the manufacturing industry. The ESC concept is applied to define the hierarchy with four major perspectives (i.e. financial, customer, internal business process, and learning and growth), and performance indicators are selected for each perspective. FAHP is then proposed in order to tolerate vagueness and ambiguity of information. Finally, FAHP is finally constructed to facilitate the solving process. With the proposed model, manufacturers can have a better understanding of the capabilities that a green supplier must possess and can evaluate and select the most suitable green supplier for cooperation.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.459-467
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• 2020

This paper aimed to study the role of green leadership toward environmental policies support in university. Furthermore, this study investigated the influence of green leadership toward environmental policies support and discussed the mediation effect of Green Self efficacy, Green Mindfulness, organization identity and environmental responsibility. The number of Population sample in this research was taken from 1,456 lecturers and staff of Universitas Negeri Semarang, Indonesia. Total sample in this research is 312 respondents. Structural Equation Models (SEM) was used in this research to develop the model of green leadership role toward environmental policies support of Lecturer and Staff in the University. This study found that green leadership had significant influences toward environmental policies support, environmental responsibility, green mindfulness and green self-efficacy but had insignificant influence toward organizational identity. Path analysis showed strong mediation effect of environmental responsibility and green mindfulness, but had a weak mediation from organizational identity and green self-efficacy. Finally, this study concluded that the role of green leadership in influencing environmental responsibility and green mindfulness was required to be enhanced in order to increase the support of environmental policies at the university. Further study needs to be carried out to determine the effect of green leadership on green performance and green behavior in organizations.

• 한국육종학회지
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• 제43권6호
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• pp.568-571
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• 2011

'Green Dream' 품종은 국립원예특작과학원에서 2009년도에 육성한 포인세티아 품종이다. 이 품종은 2006년에 진한 녹색잎에 초장이 짧고 아담한 연황색의 'Lemon Snow'를 모본으로, 생육이 왕성하고 진한 분홍색인 'Freedom Rose'를 부본으로 인공 교배하여 양성된 실생계통이다. 2007년과 2008년 2차에 거쳐 특성검정을 하여 '원교 D5-64'를 육성하였고 2009년에 3차 특성검정과 품평회를 실시하여 최종선발 하였으며, 농작물 직무육성 신품종선정위원회를 거쳐 '그린드림 (Green Dream)'으로 명명하였다. 포엽의 형태는 난형이며 포엽의 엽맥 사이에 중간 정도의 주름이 있고 포엽의 색상은 밝고 연한 황록색이다. 잎몸은 난형이며 진한 녹색이고 엽절이 적으며 엽병이 길다. 줄기 색은 녹색계이며 적심을 하지 않은 상태에서도 분지가 발생하고 줄기의 수는 중간이다. 초장은 크며 단일처리 후 약 7주일이 경과하면 완전히 착색되어 출하가 가능하다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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• pp.226-226
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• 2016

PHOLED devices which have the structure of ITO/HAT-CN(5nm)/NPB(50nm)/EML(30nm)/TPBi(10nm)/Alq3(20nm)/LiF(0.8nm)/Al(100nm) are fabricated to investigate the green emission profile in EML by using a gasket doping method. CBP and Ir(ppy)3 (2% wt) are co-deposited homogeneously as a background material of EML for green PHOLED, then a 5nm thickness of additionally doped layer by Ir(btp)2 (8% wt) is formed as a profiler of the green emission. The total thickness of the EML is maintained at 30nm while the distance of the profiler from the HTL/EML interface side (x) is changed in 5nm steps from 0nm to 25nm. As shown in Fig. 1, the green (513nm) peak from Ir(ppy)3 is not observed when Ir(btp)2 is also doped homogeneously because Ir(ppy)3 works as an gasket dopant of the Ir(btp)2 :CBP system. Therefore, in this experment, Ir(btp)2 can be used as a profiler of the green emission in CBP:Ir(ppy)3 system. The emission spectra from the PHOLED devices with different x are shown in Fig. 2. In this gasket doping system, stronger red peak means more energy transfer from green to red dopant or higher exciton density by green dopant. To find the green emission profile, the external quantum efficiency (EQE) at 3mA/cm2 for red peaks are calculated. More green light emission at near EML/HBL interface than that of HTL/EML is observed (insert of Fig. 2). This means that the higher exciton density at near EML/HBL interface in homogeneously doped CBP with Ir(ppy)3. As shown in Fig. 3, excitons can be quenched easily to HTL(NPB) because the T1 level of HTL(2.5eV) is relatively lower than that of EML(2.6eV). On the other hand, the T1 level of HBL(2.7eV) is higher than that of EML.

• 한국지역사회생활과학회지
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• 제16권1호
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• pp.59-64
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• 2005

This study is to find out effects of hot water soluble extract from green tea, one of the Korean favorites, on the calcium metabolism and bone strength in body. To do so, calcium, phosphate, creatinine concentration and ALP activity in blood and the content of calcium and ash in the organ, the length, weight, strength in bone were measured. In addition, to find the calcium metabolism, the level of calcium intake, excretion, retention were measured. Twenty male Sprague-Dawley rats were divided into two groups and isoloated soy protein was provided as the source of protein and CaCO₃ was provided as the source of calcium. 0.5% hot water soluble extract from green tea was provided to the green tea groups and for the control group deionized water was provided. The results are as follows ; 1. There is no difference between the experimental groups in diet intake, weight gain, and the feed intake. 2. Feed efficiency ratio was low in the group which hot water soluble extract from green tea was provided. 3. There is no difference between groups the level of calcium, phosphorus, creatinine and ALP activity in serum. 4. There is no difference between groups weight, contents of ash and calcium in kidney and liver. 5. There is no difference between groups in calcium intake, absorption, excretion, and retention. 6. There is no difference between groups weight, length and strength in bone. In summary, when hot water soluble extract from green tea was provided with the amount of 150-200mg, which is taken when people generally drink as favorite tea, weight gain was reduced due to the decrease of feed efficiency ratio. However, it did not affect the availability of calcium in body at all. Thus, even if a big quantity of green tea powder or solid of hot green tea extract is not provided, the quantity obtained when people drink green tea lowers the feed efficiency ratio without reducing availability of calcium in body.