• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2012년도 추계학술대회
• /
• pp.552-553
• /
• 2012

현재의 발전소 내부에 가동 중인 열교환기 배관 라인의 Clinker Monitoring System은 초고온의 열교환기 내부의 벽면 및 배관라인의 클링커 상태를 감시하는 시스템을 요구하고 있다. 이러한 열교환기 내부의 상태를 감시하기 위하여 초고온에 견딜 수 있고 회전이 가능한 장치를 열교환기 내부에 투입하여 회전 가능한 장치를 통하여 원격으로 영상을 전송하도록 하여 클링커 상태를 영상으로 모니터링 하여 열교환기 내부의 상태를 감시 관찰 분석할 수 있는 시스템을 구성하였다. 본 논문에서는 발전설비의 열교환기 내부의 클링커 상태를 모니터링 할 수 있도록 회전 가능한 렌즈 튜브와 보호용 냉각 시스템을 추가된 통합 모니터링 시스템을 제기하고자 한다.

• 한국분무공학회지
• /
• 제11권3호
• /
• pp.161-167
• /
• 2006

As the exhaustion of petroleum resources and air pollution problems are getting serious recently, there are growing interests in premixed diesel engines which have the potential of achieving a more homogeneous mixture near TDC compared to conventional diesel engines. Early studies have shown that the fuel injection frequency and spray angle affected the mixture formation and combustion in a HCCI(Homogeneous Charge Compression Ignition) engine. Therefore, the purpose of this study is to investigate the relationship between combustion and mixture formations by injection timing and frequency using a narrow angle injector, NADI (Narrow Angle Direct Injection). In this study, we found that the fuel injection timing and injection frequency affect the mixture formations and then affect combustion in the HCCI engine.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
• /
• pp.668-672
• /
• 2005

Doosan DND, OLED manufacturing equipment maker, has developed the largest deposition system to produce $730{\times}920mm$ size AMOLED devices for the first time in the world. It is necessary for producing 40" AMOLED panels to develop the large-scaled vacuum technologies including ICP plasma, stretching glass chuck, organic deposition, metal deposition and hybrid encapsulation processes.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2002년도 하계학술대회 논문집 D
• /
• pp.2046-2048
• /
• 2002

In this paper, I designed the inverter pendulum controller to controll the position of a wheel-chair. I used coefficient diagram method (CDM) to design the controller. The CDM is available, because it can make an engineer know all about the characteristic, stability, response time and robustness, of closed loop system. Writing this paper, I simulated the controller to know wheather is can controll the position of wheel-chair using the theorem of inverter pandulum controll, and I identified the usefulness of it.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2002년도 하계학술대회 논문집 D
• /
• pp.2171-2175
• /
• 2002

Helicopter dynamics are plenty of nonlinearity. A complete mathematical model including propeller dynamics and fortes generated by the propellers is very difficult to obtain. So the method used to design to design a controller is a parameter estimation. Design controller based on variable structure system. This paper deals with LQR control technique to control efficiently, its elevation angle and azimuth one. The purpose of the experiment is to design a controller allows to use a desired elevation angle and azimuth ones. The system model has a helicopter model with 2-degree-of freedom. The simulation results were verified usefulness of controller.

• 디지털콘텐츠학회 논문지
• /
• 제8권3호
• /
• pp.393-401
• /
• 2007

P2P systems have gained a lot of research interests and popularity over the years and have the capability to unleash and distribute awesome amounts of computing power, storage and bandwidths currently languishing - often underutilized - within corporate enterprises and every Internet connected home in the world. Since there is no central control over resources or devices and no before hand information about the resources or devices, device discovery remains a substantial problem in P2P environment. In this paper, we cover some of the current solutions to this problem and then propose our feed forward neural network (FFNN) based solution for device discovery in mobile P2P environment. We implements feed forward neural network (FFNN) trained with back propagation (BP) algorithm for device discovery and show, how large computation task can be distributed among such devices using agent technology. It also shows the possibility to use our architecture in home networking where devices have less storage capacity.

• 한국임상수의학회:학술대회논문집
• /
• 한국임상수의학회 2009년도 춘계학술대회
• /
• pp.238-238
• /
• 2009

• 한국임상수의학회:학술대회논문집
• /
• 한국임상수의학회 2009년도 춘계학술대회
• /
• pp.239-239
• /
• 2009

• ETRI Journal
• /
• 제24권2호
• /
• pp.176-179
• /
• 2002

Using scaled models for an anatomical head model and a simple head model, we investigated the effects of head size on specific absorption rate characteristics for two mobile phones operating at 835 MHz and 1765 MHz. Our results showed that a larger head produced a higher localized SAR at 835 MHz. However, at 1765 MHz, the differences among the head models were insignificant since the superficial absorption was dominant over the effects of head shape and size. A larger head produced a lower whole-head averaged SAR at both frequencies.

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 2005년도 봄학술 발표회 논문집(I)
• /
• pp.115-118
• /
• 2005

In this study, small scale model test was performed to verify the ultimate load capacity of spillway pier structure under static load. The 1/20 scale test specimen was made of specially designed micro-concrete and wire mesh. From the test result, the cracking load of specimen was 10 tonf and the ultimate was 19tonf. From the similarity rule, cracking and ultimate load of prototype pier structure were predicted 4000 tonf, 7600 ton, respectively.