• 경영정보학연구
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• 제11권2호
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• pp.147-167
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• 2009

그린 IT는 IT 기반의 친환경 기술을 포괄하는 개념으로서 넓은 범위에서는 유해물질 대체, 에너지 효율화, 대체에너지 등 친환경적 기술을 의미한다. 현재 IT 산업의 흐름은 서버발열 및 데이터센터 에너지 절감 방안 등에 초점을 맞추어 그린 IT를 정의하고 있다. 본 연구는 문헌조사를 통해 그린 IT의 개념을 정의하고, 그린 IT가 나타난 배경과 필요성을 통해 현재 IT시장에 새롭게 등장한 그린 IT의 이슈 및 각 나라별 전략 및 국내의 전략을 비교분석하였다. 이를 구체적으로 살펴보면, 최근 IT 및 데이터센터 시장 전반 향후 변화 및 흐름을 볼 때 그런 IT는 그런 데이터센터 도입에 초점을 맞추어 사업의 방향과 전략을 수립하고 있는 것으로 나타났다. 따라서 본 연구는 국내외 기업의 그린 데이터센터 도입을 통한 그린 IT 구축 사례를 통해서 그린 IT 도입기준과 필요조건, 환경평가 및 설계 그리고 구체적인 추진전략과 향후 과제를 제시하였다.

• Journal of Electrical Engineering and Technology
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• 제8권4호
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• pp.704-711
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• 2013

Data center is an information hub and resource for information-centric society. Since data center houses hundreds to ten thousands servers, networking and communication equipment, and supporting systems energy saving is one of the hottest issues for green data center. Among several solutions for green data center this paper introduces higher voltage direct current (DC) power feeding system. Contrary to legacy alternating current (AC) power feeding system equipped with Uninterruptible Power Supply (UPS), higher voltage DC power feeding system is reported to be a more energy efficient and reliable solution for green data center thanks to less AC/DC and DC/AC conversions. Main focus of this paper is on reliability issue for reliable and continuous operation of higher voltage DC power feeding system. We present different types of configuration of the power feeding systems according to the level of reliability. We analyze the reliability of the power feeding systems based on M/M/1/N+1/N+1 queueing model. Operation of the power feeding system in case of failure is also presented.

• 디지털융복합연구
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• 제8권3호
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• pp.181-197
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• 2010

최근에 에너지 절감에 대한 관성이 증가하고 있으며 IT분야에서도 IT서비스를 에너지 효율적으로 제공하는 그린 IT에 대한 관심이 높다. 특히, 대량의 전력 소모가 발생하는 데이터센터를 에너지 효율적으로 구축하기 위해 노력하고 있다. 그러나 그린 데이터 센터 구축은 개인에 의존하는 단계로 구축시 창조할 가이드라인이 부족하다. 특히 공조시설의 복잡성이 에너지 효율적인 센터 걸림돌이다. 이에 본 연구에서는 그린 데이터 센터 구축을 위한 태스크와 활동, 그리고 가이드라인을 제시하였다.

• 디지털융복합연구
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• 제9권2호
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• pp.141-152
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• 2011

오늘날 데이터센터는 비즈니스에서 핵심영역으로 인식되고 있으며, 이들에 대한 많은 서비스 요구는 보다 많은 에너지 소비를 낳고 있다. 따라서 데이터센터의 높은 수준의 에너지 효율성은 구축, 운영, 폐기 등 그들의 생명주기에 있어서 핵심이슈로 등장하였다. 본 연구에서는 이러한 생명기상에서 데이터센터의 그린화 수준을 진단할 수 있도록 성숙도모델에 기초한 그린데이터센터 수준진단모델을 제시한다. 본 연구에서 제시한 수준진단 모델은 엑션추어 GMM, DCEEF 등 기존 에너지평가모델 및 그린데이터센터 성숙도평가 모델을 참조하였으며, 최종적으로 건축, 공조, 전기, IT, 조직 등 데이터센터의 5개 핵심영역에 대한 진단지표를 제안하였다.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1151-1151
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• 2001

The international coffee trade is conducted almost exclusively with green coffee. The main coffee producing countries include Brazil, Columbia, Indonesia, Mexico and the Ivory Coast. About 99 % of the coffee grown throughout the world belong to two coffee plant varieties that are commonly known as Arabica and Robusta. The quality of green coffee can be assessed according to several ISO standards (1,2,3,4,5). However, no official international standards for the authenticity of green coffee have been issued. It is important to know the country of origin of the coffee for the purposes of fair international trade. The geographic origin of the coffee is often stated on the label of coffee products such as speciality roasted and soluble coffees. Near Infrared Spectroscopy (NIR) is an accepted technique for quantitative analysis of various parameters in routine QC analysis of food products. It would appear to be a promising candidate as a tool for identification of green coffee origin and numerous feasibility studies have appeared in the literature on its use for soluble, roasted and green coffee variety identification as well as identification of arabica or robusta coffees. NIR spectrophotometers when configured in the reflectance mode are able to perform a complete profile of the NIR spectrum on whole beans. The data can then be interpreted by discriminant chemometrics data analysis. This is the approach used in the present study.

• International journal of advanced smart convergence
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• 제1권2호
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• pp.52-58
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• 2012

Green cloud computing refers to the green ambient benefits that information technology services delivered over the Internet can offer for the society. The green meaning environment friendly and cloud computing is a traditional symbol for the Internet and a type of service provider. Cloud computing has drastically increased the number of datacenters and the energy consumption of data centers and that has become a critical issue which is extremely important in green ambience. These days the cloud data center needs high energy resources that leads to high operational cost and also maximizes CO2 - carbon footprint that pollutes the ambience which is not to be considered as green ambience. So we need to provide a way that leads us to green ambience. Cloud computing for the green ambience should be designed in a way which will utilize less energy resources and to minimize the CO2 -carbon footprint, known as green cloud. In this paper we discuss various elements of Clouds which contributes to minimize the total energy consumption and the carbon emission so as to enable green ambience through green cloud computing.

• 융합보안논문지
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• 제11권4호
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• pp.11-17
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• 2011

본 논문에서는 IDC를 기반으로 한 FLV 동영상 솔루션을 Mini IPTV에 적용한 시스템 설계 및 구현을 제안한다. IDC의 에너지를 최소화하고, 자원 활용을 극대화시키는 Green Data Center로 설계하며, Mini IPTV의 다양한 콘텐츠를 서비스 공급자 및 네트워크 공급자가 네트워크를 통해 Mini IPTV 가입자에게 제공한다. 이때 FLV 솔루션 파일 포맷과 압축 기술을 이용해 동영상의 화질과 압축률을 개선하도록 구현함으로써, 트래픽 비용의 절감 및 보안 문제를 해결하고, 특히 웹에서 급속히 팽창하고 있는 e-Learning 분야에 활용하고자 한다.

• 한국군사과학기술학회지
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• 제23권2호
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• pp.139-146
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• 2020

The camouflage pattern was difficult to distinguish from the surrounding background, so it was difficult to classify the object and the background image when the color image is used as the training data of deep-learning. In this paper, we proposed a red-green color blindness image transformation method using the principle that people of red-green blindness distinguish green color better than ordinary people. Experimental results show that the camouflage soldier's recognition performance improved by proposed a deep learning model of the ensemble technique using the imitated red-green-blind image data and the original color image data.

• The Journal of Asian Finance, Economics and Business
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• 제8권8호
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• pp.229-240
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• 2021

The environment friendly lifestyle and the green product trend have motivated corporates to develop and adopt sustainable business practices. However, an increasing number of corporations have engaged in greenwashing practices to create the appearance of environmental responsibility. By employing the theory of reasoned action, the paper investigated a model linking corporate greenwashing and consumers' green purchase intentions with the mediating role of green trust and green word-of-mouth about green electronic devices in Vietnam. Using an online survey via Email, Zalo, and Wechat, data was obtained from 308 Vietnamese consumers who have been purchasing green electronic devices. Based on the responses of the participants from the questionnaires conducted, data analysis was conducted by using SEM in AMOS version 23. This investigation shows that corporate greenwashing negatively affects consumers' green trust, green word-of-mouth, and their green buying intentions. Additionally, the paper verifies that green trust and green word-of-mouth mediate the relationships between greenwashing and consumers' green purchase intentions. These results reinforce the extant understanding of greenwashing and its consequences. Finally, the study not only stimulates future research but serves as a reference for business managers, scholars, and students who are interested on the topic of environmental sustainability, new product development, and green brands.

• 한국세라믹학회지
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• 제56권1호
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• pp.104-110
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• 2019

The low-temperature sintering behavior of AlN was investigated through a conventional method. $CaF_2$, CuO and Cu were selected as additives based on their low melting points. When sintered at $1600^{\circ}C$ for 8 h in $N_2$ atmosphere, a sample density > 98% was obtained. The X-ray data indicated that eutectic reactions below $1200^{\circ}C$ were found. Therefore, the current systems have lower liquid formation temperatures than other systems. The liquid phase showed high dihedral angles at triple grain junctions, indicating that the liquid had poor wettability on the grain surfaces. Eventually, the liquid was likely to vaporize due to the unfavorable wetting condition. As a result, a microstructure with clean grain boundaries was obtained, resulting in higher contiguity between grains. From EDS analysis, oxygen impurity seems to be well removed in AlN lattice. Therefore, it is believed that the current systems are beneficial for reducing sintering temperature and improving oxygen removal.