• Title/Summary/Keyword: ubiquitous Computing

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A Study on the Direction of Ubiquitous Office with a Focus on Work Services (업무유형에 따른 유비쿼터스 오피스 계획 방향에 관한 연구)

  • Cho, Myung Eun;Chae, Hee Hwa;Lee, Ju Hyun;Kim, Mi Jeong
    • Korean Institute of Interior Design Journal
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    • v.21 no.2
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    • pp.186-196
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    • 2012
  • Information technology has changed the human life as well as the societal and economic paradigm. New office environments have been proposed to cope with emerging changes and to support working performances by reducing costs of office operation and business. Recently, office environments have adopted ubiquitous computing with a focus on collaboration to promote real-time enterprises. They become equipped with various mobile devices and pervasive technologies in wireless networks. This study aims to propose a direction for the adoption of mobile and pervasive computing on the new office environment. We investigate relate works and analyze new office types including mobile offices, telework centers and home offices. Using a customized questionnaire, the current conditions of the office environments and officers' demands were investigated and analyzed. In the end, we propose the direction for a ubiquitous office environment with a focus on two attributes, ubiquity and mobility. This research will be a basis for the development of ubiquitous offices that support the professionalism of works in practices.

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Service Platform of Grid Systems for Ubiquitous Multimedia Applications (유비쿼터스 멀티미디어 응용을 위한 그리드 시스템의 서비스 플랫폼)

  • Park Eun-jeong;Shin Heon-shik
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.1B
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    • pp.9-18
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    • 2006
  • Advances in wireless network are enabling the development of ubiquitous multimedia services. These multimedia services need efficient platforms to comply with the requirements of mobile computing. We introduce an adaptive service platform based on mobile agent and grid systems while specifying the challenges of ubiquitous multimedia services and focusing on frequent disconnections and scarce resources. We applied our platform to framework RtoA (Ready-to-Attend) which supports mobile users to access compute-intensive multimedia service, specifically, mobile education and video conferencing. RtoA includes hand-off, speaker and listener service which enable people to attend a conference or a class with satisfying quality of multimedia service. ns-2 based simulation verifies that our scheme is an efficient way to reduce energy consumption of mobile devices and to improve the response time of mobile applications.

An Effective Resource Discovery in Mobile Ad-hoc Network for Ubiquitous Computing (유비쿼터스 컴퓨팅을 위한 이동 애드혹 네트워크의 효율적인 리소스 발견 기법)

  • Noh Dong-Geon;Shin Heon-Shik
    • Journal of KIISE:Computer Systems and Theory
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    • v.33 no.9
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    • pp.666-676
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    • 2006
  • Rapid advances in ubiquitous computing and its pervasive influence over our society demand an efficient way to locate resources over the network. In mobile ad-hoc networks (MANETs) which is a special type of the sub-networks in ubiquitous environment, effective resource discovery is particularly important, due to their dynamics and the resource constraints on wireless nodes. In this paper, we propose an adaptive and efficient resource discovery strategy for MANETs. Our strategy also provides a solution to bridge different types of networks which coexist in ubiquitous environment.

The Development of Exhibition Grounds Management System Using the Ubiquitous Computing (Ubiquitous Computing을 이용한 전시회장 관리 시스템 개발)

  • Sim, Gab-Sig;Jang, Jae-Hyuk
    • Journal of the Korea Society of Computer and Information
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    • v.13 no.7
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    • pp.149-156
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    • 2008
  • In this paper, we develope the Exhibition Grounds Management System utilizing the ubiquitous computing which integrates the RFID ubiquitous main technology, existing use technology Bar-code, the Mobile communication technology for IT main technology field. The developed system consists of the program for exhibition information. the visitor registration program, manager program and mobile program for the visitor's current location inquiry and the exhibition management. This system is realized and designed based on database, web program, mobile program, wireless telecommunication technology. The automation technology utilizing the developed RFID system and the Exhibition Grounds Management System integrated with the wireless packet telecommunication using the mobile telecommunication technology could have a ripple effect on whole information industrial application fields.

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Location based Service with Temporal Reasoning (시간적 추론이 적용된 위치 기반 서비스)

  • Kim Je-Min;Park Young-Tack
    • Journal of KIISE:Software and Applications
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    • v.33 no.3
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    • pp.356-364
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    • 2006
  • 'Ubiquitous Computing' is the most important paradigm of the next generation Information-Communication technology. The one of important problems to develop ubiquitous computing service system get hold of relations between times of transfer objects and events of transfer objects. Another problem is what reason transfer-pattern through location data of transfer objects. In this paper, we propose an approach to offer temporal-relation service in ubiquitous computing environment. The first is temporal reasoning in service viewpoint. The second is temporal reasoning to record user's preference. Users have preferences that are closely connected with time. These preferences are recorded at user profile. Therefore, the user profile-based ubiquitous service system can offer suitable service to users.

Architecture of RFID Application Services for Ubiquitous Computing (유비쿼터스 컴퓨팅을 위한 RFID 응용 서비스 아키텍처)

  • Yoon Haw-Mook;Cho Tae-Beom;Jung Hoe-Kyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.4
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    • pp.731-738
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    • 2006
  • Recently, Ubiquitous Computing to achieve intellectual service without being courted in time and spatial restriction based on developing computer network and Internet rapidly appeared. A RFID technology that process information of tag attaching in physical object by a point technology that enable this Ubiquitous Computing through radio frequency is noted. However, at this moment as for the studies related RFID, only the hardware studies related to tag and reader are being actively progressed and the studies related to software technologies to provide service in practice are not sufficient. In this paper, hereupon, I progressed study of software architecture that can handle RFID application service that is observed by Ubiquitous Computing's point technology efficiently. First, compares and analyze characteristic of conceptual application architectures that is used in EPC network architecture and application development and integration that was proposed in existing and suggested new architecture.

Context-Aware Workflow Language based on Web Services for Ubiquitous Computing Environments (유비쿼터스 컴퓨팅 환경을 위한 웹 서비스 기반의 상황인지 워크플로우 언어)

  • Han Joohyun;Kim Eunhoe;Choi Jaeyoung;Cho Weduke
    • Journal of KIISE:Computer Systems and Theory
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    • v.32 no.11_12
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    • pp.617-628
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    • 2005
  • The services for ubiquitous computing environments have to provide automatically user-specific adaptive services in dynamically changed environments with many informations provided by both a user and his/her environment. Workflows used in business and distributed computing environments support service automation by connecting many tasks with rules or orderings of tasks. Therefore we must specify context information on transition condition to support context-aware services by adapting a workflow to ubiquitous computing environments. In this paper, we present a structural context model to specify context information on transition constraints of the workflow. And we propose an uWDL Ubiquitous Workflow Description Language) based on web services, which provides web service interfaces which are standardized and independent on heterogeneous and various platforms, protocols, and languages. The uWDL tan be interpreted and executed by a workflow engine, and provide users autonomic services based on context-awareness.

The Reference Model based on Web Services for USN Application Service (USN 응용 서비스를 위한 웹 서비스 기반의 참조 모델)

  • Bang, Jin-Suk;Kim, Yong-Woon;Yoo, Sang-Keun;Jung, Hoe-Kyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.12 no.5
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    • pp.948-955
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    • 2008
  • Recently, as the dissemination of the Internet and development of computer network technology, Research is actively underway for realization of the next-generation computing paradigm called Ubiquitous Computing. For realization of Ubiquitous computing, The data recognized from each sensors must be collected on real-time and transferred to applied service so that they may be used as data for providing service to users. However, there are several problem for realization. First, there is no standardization of sensor metadata, interface and event definition. Second, applied service has weak point that difficult of approaching to the data. Third, none interoperability with each platform and protocol. In this paper, we designed Sensor Service Description Language based on XML to resolve problem above. This Language expresses the measurement of the sensor and Service Metadata in the form to be standardized. In addition, we have proposed and development a reference model for USN application service.

Implementation of a Context-Awareness based UoC(Ubiquitous System on Chip) for Ad-Hoc Network (Ad-Hoc Network에서 복합 멀티 센서 기반의 UoC(Ubiquitous computing on Chip)에 의한 Context-aware System Architecture 구현)

  • Doo, Kyoung-Min;Kim, Young-Sam;Chi, Sam-Hyun;Lee, Kang-Whan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2008.05a
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    • pp.509-512
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    • 2008
  • Ubiquitous Computing System란, 언제 어디서나 통신 및 컴퓨팅이 가능하고 컴퓨팅 시스템이 상호간에 정보를 공유하고 협력하는 컴퓨팅 시스템이다. 이로써 기존의 컴퓨팅 환경과 같이 사용자와 컴퓨터간의 대화형 상호작용이 아닌 물리적인 환경 상황(Context)등을 시스템이 스스로 인식하고 이를 기반으로 사용자와의 상호 작용을 지원하는 상황인식 기술이 필수적인 요소로 부각되고 있다. 또한, Ubiquitous Computing System을 위해 사용자 및 주변 환경 정보를 감지하는 센서(Sensor) 기술이 필요하다. 하지만 사용자 및 주변 환경으로부터 입력되는 불확실하거나 모호한 상황정보에 대한 표현과 추론에 대한 연구는 부족한 실정이다. 본 논문은 이런 이유에서 Rule-based System을 기반으로 CRS와 DOS의 개념을 도입한 새로운 상황인식 기반의 Architecture를 제안하고, 이를 VHDL을 통해 SoC로 구현하였다. CRS를 통해 실시간으로 다양한 센서에서 들어오는 많은 데이터에 가중치를 부여하여 각 센서마다 중요도를 달리 부여한다. 이로써, System은 Sensor 입력 값의 중요도에 따라 처리 순서를 우선적으로 부여하여 처리 속도를 높인다. 또, DOS를 통해 각양각색의 사용자에게 획일적인 서비스를 제공하는 것이 아니라 상황 변화의 패턴에 따라 개별화되고 특화된 서비스를 제공한다. 마지막으로, Ubiquitous Computing System의 향후 발전 가능성을 예상하고, 본 논문에서 제시한 Context-aware Architecture에 의해 구현된 UoC의 유용성을 짐작해 본다.

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A Context-Aware System in Ubiquitous Environment (유비쿼터스 환경에서의 상황 인지 시스템 연구 활동 소개 도우미 - -)

  • 박지형;이승수;김성주;염기원;이석호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.1048-1052
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    • 2004
  • The ubiquitous environment is to support people in their everyday life in an inconspicuous and unobtrusive way. This requires that information of the person and her preferences, liking, and habits are available in the ubiquitous system. In this paper, we propose the context aware system that can provide the tailored information service for user in ubiquitous computing environment. The system architecture is composed of 4 domain models that can perform some pre-defined tasks independently. And we suggest the hybrid algorithm combined with fuzzy and Bayesian network to reason what information is suitable for user environment. Finally, we apply to agent based RGA(Research Guide Assistant).

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