• 전기학회논문지P
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• 제55권3호
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• pp.123-127
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• 2006

In a heating control system, the indoor temperature controller transfers temperature signals inputted from the temperature sensor and the user to the valve controller. The valve controller receives these signals then the valve controller controls the valve driving motor on two position control and controls the indoor temperature. When setting up a new valve driving motor from a long distance it is necessary to set up a new valve controller. But occasionary, due to construction, It is impossible to wire between the existing valve controller and the new valve controller. In this situation, the new and existing valve controllers can communicate via power line communication. In this paper it is proposed heating control system controls on two position control via power line communication.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 가을 학술발표회 논문집(I)
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• pp.179-184
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• 1998

The permeability of concrete influences the durability of concrete remarkably. This paper describes a programme of permeability tests carried out to determine the differences between permeability coefficients derived using water, oxygen and chloride ions. Tests have been carried out on three concretes having water/cement ratios of 0.45, 0.55, 0.65 to measure their water, chloride-ion and gas permeability coefficients. The test results indicate that the permeability of concrete increase with the increase water cement ratios. The water and gas permeability coefficients is presented from $1.43$\times$10^{-10} to 19.01$\times$10^{-10}m/s$ and from $0.88$\times$10^{-10}$ to $1.59$\times$10^{-10}$m$^2$for concrete of different water cement ratios. The current intensity passing through the concrete is presented from 4504 to 4920 C.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 가을 학술발표논문집 Vol.29 No.2 (3)
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• pp.295-297
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• 2002

최근 들어, 냉장고, 세탁기, TV 등과 같은 가정내의 가전들을 효과적으로 제어하고, 웹에서의 접근을 위한 홈 네트워크 기술에 많은 관심이 모아지고 있다. 홈 네트워크는 가전, 센서, 스위치, 제어기등과 링크할 수 있으며 멀티미디어 데이터의 전달을 위한 인프라의 제공 및 애플리케이션에 대한 사용자 인터페이스를 제공한다. 이러한 다양한 멀티미디어 데이터를 효과적으로 처리하기 위해서는 홈 게이트웨이가 필요하며, 이러한 홈 게이트웨이에 대한 연구가 활발하게 진행되고 있다. 그러나 다양한 데이터 구조의 처리를 위해 IEEE1394, Bluetooth, LonWorks, WLAN, HomePNA, PLC 둥과 같은 다양한 기술의 사용으로 인해 현재 홈게이트웨이는 매우 복잡한 구조를 가지게 되며, 기기간 상호 운용성도 보장하기 어려운 실정이다. 이에 본 논문에서는 홈 네트웍에서 존재하는 다양한 미디어 데이터를 효과적으로 처리할 수 있는 새로운 홈게이트웨이의 구조를 설계하고, 각각의 미디어 데이터를 인터워킹 가능한 패킷으로 만들어 주는 Media Processor와 서로 다른 미디어간의 인터워킹을 위한 Common Switch Interface의 구조에 대하여 기술한다.

• 대한한의학원전학회지
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• 제13권2호
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• pp.98-105
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• 2000

This part is to comment the part related to acupuncture among the contents of Ku Chim Sip Ⅰ Won(九鍼十二原) in Young Chu(靈樞) and Bo Myung Jeon Hyung Lon(寶命全形論) in So Moon(素問). This volume divide in three chapters. Chapter Ⅰ deals with rules of Bosa(補瀉) in acupuncture. Chapter Ⅱ deals with desirable attitude in acupuncture. Chapter Ⅲ deals with Ku Chim(九鍼) that correspond to the universe, four seasons and YinYang. So Chim Hea(小鍼解) in Young Chu(靈樞) also comments Ku Chim Sip Ⅰ Won(九鍼十二原) in the same way that this part does. And yet there are not a few differences from this part in noting. Thus we need the comparative study of between this part and So Chim Hea to understand Ku Chim Sip Ⅰ Won(九鍼十二原). Therefore I made a comparative study of views of many physicians to correctly understand.

• Journal of Pharmaceutical Investigation
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• 제29권2호
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• pp.105-109
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• 1999

The sustained release of piracetam by complexation with ion exchange resin was prepared. The complex was coated with Eudragit RS100 and their releases in vitro were conducted with various different kinds of medium solution. Dissolution rate increased as ionic strength, acidity and drug concentrations increased and reached its maximal plateau concentration within 5 min. Based on these data, The controlled release of piracetam using ion-exchange piracetam complex coated with Eudragit RS100 could be available.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 D
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• pp.2103-2104
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• 2006

빌딩이 지능화 되어감에 따라 많은 제어 시스템이 생겨나게 되었다. 그리고 이들을 통합하여 연동 서비스를 제공하기 위한 노력들이 이루어지고 있다. 그동안 빌딩에 도입된 자동화 및 제어 시스템은 공급업체도 다양할 뿐만 아니라 업체별로 시스템 통신 방식도 상이하기 때문에 공급업체에 의해 종속되는 문제점을 가지고 있었다. 이와 같은 문제를 인식하고 개방형 표준 프로토콜을 사용하려는 노력들이 있었고, 현재는 BACnet, LonWorks, Modbus 등의 개방형 프로토콜을 각 설비의 특성에 맞게 혼용하고 있다. 그러나 각 설비별로 데이터 포맷과 통신 방법이 틀리기 때문에 완벽한 통합과 연동 서비스는 이루어 지지 못하고 있다. 이에 본 논문에서는 빌딩 시스템간의 데이터 공유, 빌딩 어플리케이션과 다른 비즈니스 어플리케이션간의 데이터 공유 및 통신이 가능하도록 XML 웹 서비스를 제안하고 구현하였다.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• 제3권3호
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• pp.169-175
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• 1999

2,4-Dinitrophenol(DNP) is a metabolic uncoupler that prevents cells from creating energy for growth and it has been suggested that the availability of sodium ions may be important in mitigating the effects of uncouplers. Accordingly, the degradation of DNP was investigated using activated sludge which had been adapted to mineralize DNP. After the acclimation of the activated sludge, the effect of sodium ions on the toxicity of high concentrations(80 to 100mg/L) of DNP was investigated over a sodium ion concentration range of 9.3$\times$10-5 to 94mM. The concentration of sodium ions in the activated sludge mixed liquor seemed to have little effect on the DNP toxicity. However, a lack of sodium in the grwoth media resulted in a reduction of the DNP degradation rate by a bacterial isolate from the activated sludge culture identified as Nocardia asteroides.

• 한국세라믹학회지
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• 제23권2호
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• pp.1-6
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• 1986

The mixture of (opalit+Al) powder was ignited by electric shock for the preparation of sialon powder by changin the contents of Al. The formation reaction of sialon was investigated by heating the specimens of ignited mixture (opalit+Al) in nitrogen atmosphere at various temperature. The phases existing inthe specimens nitrided between 1400 and 1$600^{\circ}C$ were found $\beta$-sialon 15R-sia-lon $Al_2O_3$ and AlN but the mixture $\beta$-sialon and 15R-sialon was finally acquired by heating the ignited mixture of (Al 50%+opalit) at 175$0^{\circ}C$ for 3hours in nitrogen atmosphere.

• 한국BIM학회 논문집
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• 제8권1호
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• pp.15-23
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• 2018

Geometry control of precast members is the most important technology for modular construction. In this paper, image-based modeling and rendering (IBMR) technology was adopted for 3D modeling of precast elements. It is necessary to use match-casting method for precast post-tensioned column assembly. Preassembly using 3D models created by image processing can minimize construction error. Augmented reality devices are used to check the geometry of the segment. Laboratory-scale tests were performed. The proposed process has been applied to the real precast bridge pier segments.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.94.4-94
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• 2002

Traditional control systems that consist of sensors, actuators and a controller centralized and connected with point-to-point links, have become distributed because of their performance limits and maintenance problems. Sensors and actuators are changed to smart devices having a processor and these devices and controllers are connected with fieldbuses such as Profibus, FIP, CAN, LonWorks and so on. Because they are distributed, it takes any delay to transmit data from sensor to controller and data from controller to actuator according to network characteristic. Also, the execution times of tasks in a node are not regular and depend on the node characteristic and the number of tasks and so on...