• Journal of the Society of Disaster Information
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• v.9 no.2
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• pp.164-177
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• 2013

From 2010 years to 2013, the selection method of successful bidder has been changed design suitable lowest method, comprehensive evaluation method(bid price adjustment, design score adjustments, weight standards), fixed amount best design method. Therefore this study was presented by analyzing the impact on the domestic construction industry according the way to determine the successful bidder, the evaluation order method and the operational issues through the analysis of order status, order number, results of acceptance an order, success rate range, results of acceptance an order according to weight success rate, results of acceptance an order by work type and order institution of a turnkey alternative tendering construction performed in domestic civil part.

• The Transactions of the Korean Institute of Power Electronics
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• v.12 no.1
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• pp.37-49
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• 2007

To detect islanding mode when the grid is being tripped is a major safety issue in utility interactive PV(UIPV) system. Widely used techniques among various active methods to detect islanding mode are Reactive power variation (RPV)method and Active frequency drift(AFD) method. In this paper, analytical design method is suggested for AFD and RPV method under IEEE recommended islanding test condition. And in order to show the validity of proposed method, EMTP based simulation was done for UIPV system with RPV method and AFD method. Results shows proposed method is very useful.

• Journal of Korea Multimedia Society
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• v.15 no.9
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• pp.1156-1164
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• 2012

Hanok is a cultural heritage containing our ancestor's life style intact and breathing alive with us until now. As Hanok has been concerned as a echo-friendly architecture, a new methodology for efficient construction without damaging the traditional construction process comes into request. The goal of this research is development of a architectural design tool based on the BIM(Building Information Modeling) for satisfying these demands. It will be usable to support whole process of the traditional building from digital design to production and construction. Firstly, we take a consideration of the traditional architecture reflecting the spirit of the age and suggest efficient design method for architectural components. Each components is pre-fabricated as a template representing similar components. All pre-fabricated components are designed by object-oriented concepts so, many variations for a component can be derived from the pre-fabricated component. Our method is helpful for reducing design errors because that it considers combining rule between connecting components in the template design. Moreover it is plugged in the commercial architectural CAD, so it can supports digital design not only traditional architecture but also fusion style mixed with modern architecture.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.768-770
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• 2014

Due to increasing demand of new technology, the complexity of hardware and software consisting embedded systems is rapidly growing. Consequently, it is getting hard to design complex devices only with traditional methodology. In this contribution, I introduce a new approach of designing complex hardware with SystemVerilog. I adopted the idea of object oriented implementation of the SystemVerilog to the design of multiplication server farms. I successfully implemented the whole system including the test bench in one integrated environment, otherwise in the traditional way it would have cost Verilog simulation and C/SystemC verification which means much more time and effort.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.3
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• pp.609-616
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• 2018

The purpose of this study is to describe the technologies necessary to design responsive web with the use of the responsive website based on implementation structure as a prototype. Responsive design means the process of analyzing prototype requirements on the basis of implementation and applying the analysis results to development. The design method based on the principle of priority in development was established, and then flexibility and variability through design formula were set up. After that, the user-oriented primary principle and secondary principle were drawn to establish implementation structure. In the way of discussing compression technologies, a method of combination was searched for, and then a method of asynchronous script scalability in line with a web prototype was found. Today, a website or a web application needs to be adopted and accessed regardless of device types. As a solution, a responsive website design method was found. Important technologies for the implementation structure for the responsive website design method and its relevant prototype website were came up with.

• Journal of the Korean Institute of Telematics and Electronics C
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• v.36C no.6
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• pp.37-43
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• 1999

Two-way addressing method has been proposed for efficient VLSI implementation of Euclidean calculation circuit for pipelined Reed-Solomon decoder. This new circuit is operating with single clock while exploiting maximum parallelism, and uses register addressing instead of register shifting to minimize the switching power. Logic synthesis shows the circuit with the new scheme takes 3,000 logic gates, which is about 40% reduction from the previous 5,000 gate implementation. Computer simulation also shows the power consumption is about 3mW. The previous implementation with multiple clock consumed about 5mW.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.531-534
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• 2007

In the current domestic design-build contract, design and construction are separated due to prohibition of outside work. but instead the design-build contract adopts a method of fulfilling each assignment as a joint venture, which makes it difficult for participants to communicate each other and often require changes of design. also, It is difficult to performance efficiency project that they don't want to share useful information related to design and construction. In this study suggests how to maxmize the effiency of the project by proposing a process model connected with an efficient partnering and constructability in a deign development phase of design-build constract.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 2001.11a
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• pp.195-199
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• 2001

본 논문은 고휘도 직하방식의 Backlight Unit을 광학 Simulation을 이용하여 설계 및 제작하였다. 직하방식의 Backlight는 휘도 균일도에 많은 문제점을 보이고 있으나 본 논문에서는 18"Backlight를 휘도 균일도 90%의 고휘도, 높은 휘도균일도의 Backlight Unit을 설계하였다. 특히 본 논문에서는 12개의 램프를 한 개의 인버터로 구동함으로써, Backlight Unit의 광 효율 향상과 제작 단가의 저하를 동시에 얻을 수 있다.

• Proceedings of the Korea Multimedia Society Conference
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• 1998.04a
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• pp.95-99
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• 1998

본 논문에서는 웨이브렛 변환을 이용한 영상 부호화에서 입력 영상의 통계적 성질에 관계없이 부호화 결과에 범용성을 갖는 새로운 벡터 양자화기 설계법을 제안한다. 제안하는 벡터 양자화기에서는 대표벡터를 생성하기 위한 학습계열로 난수에 영상의 상관과 에지성분을 첨가한 모사 영상을 사용한다. 제안한 방식에 의해 설계된 벡터양자화기와 코드북 생성에 이용하는 학습계열에 부호화 대상이 되는 영상과 같은 실제의 영상을 사용한 종래방식으로 설계된 벡터양자화기와 부호화 성능을 비교하여 종래방식의 문제점을 명확하게 밝힌다.

• Proceedings of the KIPE Conference
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• 2010.07a
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• pp.43-44
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• 2010

본 논문에서는 저전압 구동 인버터의 게이트 구동회로 설계 시, 밀러 캡 영향이 야기할 수 있는 암 단락 현상 방지를 위한 양전원 방식의 게이트 구동회로 설계를 제안한다. 제안하는 회로는 부트스트랩 방식의 0~15[V] 의 전원을 사용하고, 커패시터와 다이오드를 통하여 마이너스 전압을 생성하며 이를 통해 양전원으로 게이트를 구동한다. 이는 단 전원 방식에 비하여 밀러 캡의 영향을 줄일수 있고 이를 통해 스위칭 시 소자의 스트레스를 감소시키며 또한 암단락을 방지한다. 제안하는 회로를 시뮬레이션과 실험을 통해 검증하였다.