• The Journal of Information Systems
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• v.17 no.1
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• pp.155-171
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• 2008

This thesis proposed a method that connecting step motor to image send board which can acquire image to move and remote controlling via streaming image board of PDA(personal digital assistant) based on embedded Linux which is using wireless network There are three embedded Linux system to embody movable image send board. First, though the wireless network a signal of PDA is transmitted to the board which has embedded Linux and a system which is controlled by the expansion I/O port of the board. Second, it's a system streaming realtime image at a PDA which has embedded Linux. The last is a system which controls a process of image board using TCP/IP communication and image send board at PC. These are the system which can use industrial settings and homes. It can also make use of an embodiment method about travelling image robot.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2010.05b
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• pp.99-102
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• 2010

Today's construction is higher and more complex. So types and amounts of needed materials for construction project are increasing and those are occurred problems in construction site such as insufficient working space, confusion of materials handling order and working circulation. Because of those problems, research of progress management system using RFID+4D has been studied, but it is impossible to manage progress and material statement in real-time. So this study analyzed problems of current research and suggested VRML based RFID+4D Progress Management System. This Study focused on system basic concept and interface is designed for system development. This research is still progressing, so it has to do more development and research. However, it could be expected construction management efficiency and automation of management tasks.

• The Transactions of the Korean Institute of Power Electronics
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• v.4 no.6
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• pp.570-578
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• 1999

This paper aims at developing remote control system to control and monitor distributed various devices t through Internet or information communication network. SNJV!P(Simple Network l\ilanagement Protocol) and R Rectifier system with SN:\IP are adoptL'Cl for applied system with network management protocoJ, respectiveJy. F For controJling and monitoring distributed devices in realtime, Java environment software is constructed. Also g general--purpose interface controller between network device and applied device is pro[XJsed. The ProPOSL'Cl c controller is also able to control various devices with communication network remotely.

• Korean Institute of Interior Design Journal
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• no.18
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• pp.9-15
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• 1999

Computers and internet have the potential to radically development. But, computer is a just tool by itself. This study is control implement in a way that exploits the capacity of network of processors to execute many tasks concurrently in architectural desigv. The collaboration design system constituted integrated CAD (computer-aided design) system at the base of standardization database environment network and world wide web (WWW). Collaboration design management system is composed of Project Management, Part Management, Process Management , and Appraisement system. They can provide frameworks for effective coordination and management of design work in accordance with the Collaboration Design Support System operating rule accommodatingly. architectural data can be collaboration design environment accessible through a web browser and located at a server. whenever their work investigated each others. Throughout process, the database acted as an individual design and it made them available in realtime. And they can have quick overview of the work. That way a continuous evaluation of best design was distinctly and highly. In the future, New architectural design methods are collaboration environment could result in productivity and quality.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.544-546
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• 1998

분산 환경의 발달과 네트워크를 이용한 원거리 컴퓨터 사용이 증가되면서 발생하게 된 전산망 침해 사고를 항상 감시하고 분석하여 자동적으로 대처하기 위한 전산망 보안 시스템이 연구되고 있다. 본 논문에서는 자바네이티브 인터페이스를 이용한 실시간 네트워크 보안 시스템을 제안한다. 자바의 시스템 자원에 대한 엑세스의 한계를 극복하기 위해서JNI 를 C/Java의 이용한 의 연동을 통하여 보다 효율적이고 용이한 정보 수집 및 취약점 분석을 가능하게 한다. 또한 점검하고자 하는 호스트에 보안 정보 수집 모듈을 멀티쓰레드로 상주시킴으로써 실시간으로 원하는 정보를 얻어 선택된 점검 대상에 가해지는 모든 활동들을 분석한다.

• Proceedings of the IEEK Conference
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• 2001.09a
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• pp.947-950
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• 2001

This paper implements H.263 codec using SIMD(single instruction multiple data) method in real time based on PC. This system uses INS algorithm previously proposed by the authors as motion estimation module. SIMD method is used in DCT, IDCT, quantization, motion estimation, and display module. The developed algorithms are implemented using TMN5. Using the above algorithm, H.263 Codec can communicate more than 15 frames/sec in CIF resolution on a Pentium-IV 1.7GHz computer.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.277-280
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• 1998

As user's demands for high-speed data traffic are recently increased, ABR services are considered as one of important service requirements in ATM networks. Unfortunately, a number of existing ATM switching systems have structural drawbacks as to support ABR services because these switching systems have been developed to support realtime(rt) services such as CBR and rt-VBR services. To support ABR services in the existing ATM switching systems, new traffic control mechanisms for ABR services are required. This paper proposes a method for supporting ABR services in ATM swithcing systems without back-pressure mechanisms and evaluates the performance of the proposed method using simulation.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.441-442
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• 2010

• Proceedings of the Korea Multimedia Society Conference
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• 2001.11a
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• pp.771-774
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• 2001

기존의 학습 시스템은 실시간이나 VOD로만 학습자에게 제공되어 불필요한 컨텐츠나 중복되는 부분이 있을 뿐만 아니라 화상 없이 음성만으로 수업이 진행되었다. 본 논문에서 제안하는 실시간 음성 강의 시스템은 기존의 수업 진행 방식에서 벗어나 실시간 수업과 상호간의 대화가 지원되는 양방향 커뮤니케이션이 가능한 시스템이다. 그리고 웹을 통하여 시간, 공간에 구애받지 않고 수시로 접속하여 사용자가 필요한 자료를 받아서 학습이 가능한 시스템이다.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11a
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• pp.28-31
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• 2003

침입 예방 및 탐지 기술에 대해서는 많은 연구가 진행되어 왔으나 침입이 발생한 후, 즉 공격이 성공한 후에도 필수 서비스가 유지되도록 하는 침입감내 연구는 아직 초기 단계이며, 최근 빈번한 침해 사고로 인하여 시스템에 대한 침입이 발생한 상황 하에서도 특정 서비스를 제공할 수 있는 침입감내시스템에 대한 요구가 매우 높다. 본 논문에서는 침입감내시스템에서 필수 서비스를 지속적으로 유지하기 위해 요구되는 실시간 자원정보 모니터링 모듈을 구현했다. 본 모듈은 프로세스 정보, 하드웨어 정보, 메모리 사용량, CPU 사용량, 네트워크 송ㆍ수신량 등을 모니터링 해주며 이 정보들은 관리자에게 제공되어 필수서비스를 선택 유지하는데 필요한 중요 정보로 활용될 수 있다.