• 연구논문집
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• 통권28호
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• pp.239-246
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• 1998

Today’s information technology departments face a dilemma to create a competitive advantage for the organization by developing. deploying, and managing distributed applications that scale across the LAN, WAN, and Internet, while preserving investments in systems. Applications, information. IT organizations are today being asked to build the future, without breaking systems that maintain the current business. A possible answer to this dilemma is the implementation of a multi-tier distributed computing architecture. Multi-tier architecture has the potential to provide better, more timely information across the enterprise at a lower cost than the current combination of PC LAN, two-tier client/server, or mainframe applications that have been developed in most organizations. In this paper, we implement management information system based on distributed object middleware using multi-tier distributed computing architecture. This system uses Microsoft's implementation of DCOM/ActiveX and provides easily accessible web interface to the system users.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권12호
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• pp.5654-5668
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• 2018

Driven by security and real-time demands of Internet of Things (IoT), the timing of fog computing and edge computing have gradually come into place. Gateways bear more nearby computing, storage, analysis and as an intelligent broker of the whole computing lifecycle in between local devices and the remote cloud. In fog computing, the edge broker requires X-aware capabilities that combines software programmability, stream processing, hardware optimization and various connectivity to deal with such as security, data abstraction, network latency, service classification and workload allocation strategy. The prosperous of Field Programmable Gate Array (FPGA) pushes the possibility of gateway capabilities further landed. In this paper, we propose a software-defined gateway (SDG) scheme for fog computing paradigm termed as Fog Computing Zero-Knowledge Gateway that strengthens data protection and resilience merits designed for industrial internet of things or highly privacy concerned hybrid cloud scenarios. It is a proxy for fog nodes and able to integrate with existing commodity gateways. The contribution is that it converts Privacy-Enhancing Technologies rules into provable statements without knowing original sensitive data and guarantees privacy rules applied to the sensitive data before being propagated while preventing potential leakage threats. Some logical functions can be offloaded to any programmable micro-controller embedded to achieve higher computing efficiency.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1998년도 Proceedings of International Workshop on Advanced Image Technology
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• pp.79-84
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• 1998

This paper describes implementation of the core DSM-CC UU interface. It briefly describes the reference model for the DSM-CC and related standards that should be reviewed for the implementation. The Common Object Request Broker Architechture, Revision 2.0 (CORBA 2.0) is sued as a remote procedure call (RPC) scheme for the UU Interface. Entire system was implemented with C++ on Windows NT platforms. The implementation procedure has been decomposed ito two tasks. The first task is to implement the Naming Service for service navigation. The Naming Service is one of the CORBA Services that extend the core CORBA specification. A client GUI is implemented for easy navigation among various services. The second task is to construct multimedia server and client for a Video-on-Demand (VoD) system. MPEG-2 Transport Stream is transported via ATM AAL5 using the Windows Socket 2.2 ATM extension API. A GUI enables the user to navigate the service domain and select a program. After the selection the user can control the MPEG-2 stream with VCR-like buttons.

• 정보처리학회논문지C
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• 제13C권6호
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• pp.717-724
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• 2006

본 논문에서는 홈네트워크 기기의 상호 운용성을 제공하는 UMB와 데이터방송 서비스를 지원하는 ACAP 미들웨어를 기반으로 홈네트워크 서비스와 방송 서비스의 상호 운영을 위한 컨버전스 구조를 제시한다. 제안된 구조는 데이터방송 서비스처럼 홈네트워크 서비스에 대하여 Java TV Xlet 인터페이스와 HAVi 사용자 인터페이스를 적용하여 구성함으로써 리모콘과 TV 수상기를 통하여 홈네트워크와 데이터방송 서비스를 함께 제어할 수 있는 TV 중심의 사용자 인터페이스를 제공한다. 또한, 셋톱박스에서 홈네트워크 서비스를 접근하기 위한 서비스 프락시와 홈서버에서 서비스 관련 데이터를 제공하는 서비스 브로커를 정의하고, ACAP 미들웨어의 애플리케이션 매니저는 서비스 프락시에서 애플리케이션 매니저로의 서비스 이벤트를 통하여 홈네트워크 서비스에 대한 라이프사이클을 관리한다.