• 한국광학회:학술대회논문집
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• 한국광학회 1998년도 제15회 광학 및 양자전자 학술발표회 논문집
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• pp.206-207
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• 1998

• 드라이브 ㆍ 컨트롤
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• 제11권3호
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• pp.66-68
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• 2014

• 한국컴퓨터정보학회논문지
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• 제14권12호
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• pp.17-24
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• 2009

최근에, 그린 컴퓨팅은 모든 산업 분야에서 가장 중요한 이슈가 되었다. 이에 따라, 에너지 효율성의 강조는 아무리 강조해도 과하지 않다. 상용 프로세서 제조업체인 인텔의 경우도 성능 뿐 아니라, 에너지 효율성을 매우 강조하고 있다. 그럼에도 불구하고, 컴퓨터를 사용하는 많은 일반 사용자들은 추가비용 임이 컴퓨터의 성능만을 높이기 위해 CPU 오버클럭킹을사용한다. CPU 오버클럭킹을 통한 성능 향상에 따른 파워 소모는 필요악으로 여겨져 왔다. 본 논문에서는 CPU 공급전압은 그대로 유지하고 CPU 클럭 주파수만 증가시키는 에너지 효율을 고려한 효과적인 CPU 오버클럭킹 방법을 제안한다. 이 방법을 통해 에너지 감소와 성능 향상이라는 두가지 목적을 동시에 달성하였다. 실험결과, 실행시간 17% 단축, 전체 컴퓨터 시스템 에너지 소모 5% 감소를 보여주었다. 더불어, 전체 컴퓨터 시스템 Energy Delay Product (EDP)가 22% 감소되는 결과를 보여주었다.

• Safe Food
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• 제4권2호
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• pp.15-18
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• 2009

• 수도
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• 제26권2호통권90호
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• pp.55-63
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• 2000

• 한국전기전자재료학회논문지
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• 제28권10호
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• pp.676-681
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• 2015

Recently many studies being carried out to increase the light efficiency of LED. The external quantum efficiency of LED, generally the light efficiency, is determined by the internal quantum efficiency and the light extraction efficiency. The internal quantum efficiency of LED was already reached to more than 90%, but the light extraction efficiency is still insufficient compared with the internal quantum efficiency because the total internal reflection is generated in the interface between the LED chip and air. Thus, we studied about flip chip LED with PSS and performed the optical simulation which find more optimized PSS for flip chip LED to increase the light extraction efficiency. Decreasing of the total internal reflection and effect of diffused reflection according to PSS improved the light extraction efficiency. To get more higher the efficiency, we simulated flip chip with PSS that the parameters are arrangement, edge spacing, radius, height and shape of PSS.

• 산업경영시스템학회지
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• 제27권4호
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• pp.170-178
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• 2004

As quality becomes a primary leading factor of organizational success, various management strategies have been introduced to improve quality competitiveness. Quality competitiveness, however, is difficult to measure and numerous organizations are struggling to set realistic improvement objectives. The primary purpose of this research is to propose a systematic approach to help the practitioners develop an improvement plan for their organizational quality competitiveness. This approach employs DEA(Data Envelopment Analysis) to evaluate relative efficiency among companies which make efforts to improve their quality competitiveness. It presents an integer programming model to elicit an optimal improvement plan for meeting a target level. A decision support system is also developed for the managers to plan a sequential improvement plan based on both DEA model and the integer programming model.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2004년도 추계학술대회 논문집
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• pp.361-366
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• 2004

This study has carried out in order to furnish the fundamental material to systemize the lecture room into multimedia in the future, by locating college lecture room as the subject of study, by compare and analyze on acoustic character in both before and after of each improvement. Thereby, now we are about to compare and analyze on physical character of room acoustics in both common lecture room before improvement and the modified multimedia-lecture room after its improvement. Observing the conclusion obtained through experiment, reverberation time in the modified 'lecture room after improvement' became shorter compare with the 'lecture room before improvement', definition and RASTI also improved to be suitable to lecture, and considered that it is able to elevate the intimacy with studying and teaching efficiency, as well.

• 한국디지털건축인테리어학회논문집
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• 제12권3호
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• pp.27-38
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• 2012

The purpose of this study is to analysis the concept of location efficiency, a base for the qualitative evaluation of TOD, and to propose the method of urban design for the improvement of location efficiency. Because of the environmental crisis by urbanization, sprawl and global warming, the importance of the solution through TOD has been increasing. For the future development of TOD, it becomes important to evaluate TOD qualitatively. From the study, it is grasped that location efficiency contains the concepts of value recapture, QoL and choice, financial return, and efficient regional land use and patterns. And the method of urban design for location efficiency is proposed as the followings: Form Based Zoning as land use plan, TOD and TOC model as node function, and street systems, mixed-use development, characteristic housing with various types, and networking of neighborhood facilities as place function.

• 대한안전경영과학회지
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• 제15권1호
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• pp.249-258
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• 2013

Data Envelopment Analysis (DEA) is a useful tool to analyze the relative efficiency of decision making units (DMU) characterized by multiple inputs and multiple outputs. This method has been popularly used as an analytical tool to suggest some strategic improvement. To do this, the results of DEA provide decision makers with a single efficiency score, efficient frontier, return to scale, benchmarking decision making units, etc. The purpose of this paper is to evaluate research performance of 38 universities and provide an inefficient university with the way of organizational changes to be an efficient university by using DEA. Various input and output variables are used to identify technical and scale inefficiency. Additionally, we analyze how an inefficient DMU could be changed an efficient DMU based on a case university. This result will give an insight of constructive directions for increasing of research performance to university decision makers.