• Title/Summary/Keyword: context based design

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Design and Implementation of Context-Aware Middleware for Distributed Ubiquitous Environments (분산 유비쿼터스 환경을 위한 상황 인식 미들웨어의 설계 및 구현)

  • Kim, En-Young;Oh, Dong-Yeol
    • Journal of the Korea Society of Computer and Information
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    • v.11 no.5 s.43
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    • pp.105-114
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    • 2006
  • Context-Awareness is a important technology to support optimized services automatically by recognizing various context informations in ubiquitous environments. Previous middlewares which supports ubiquitous environments used a centralized storage and DBMS to store and manage context informations and service contents. Centralized management of context informations and service contents sometimes hinders the autonomy of moving node and interoperability between difference middlewares. In this paper, we design the systems which stores context informations in moving node by distributed form and shares service contents between middlewares in distributed ubiquitous environments. And it provides Context-Aware scripts to supports the definition of context informations reasoning and execution of services. It verifies the usefulness of the designed systems by applying the scenario of music playing service based on context awareness

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The conditions and principles of the 'Bionik' space design on the basis of the consilient horizon of biology and architecture (생물학과 건축의 통섭적 지평에 기초한 비오닉 공간디자인의 조건 및 원리)

  • Lee, Ran-Pyo
    • Korean Institute of Interior Design Journal
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    • v.20 no.5
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    • pp.68-77
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    • 2011
  • In this research it is concentrated first of all on the attempts to reconstruct the historical context of the idea for the space design based on the natural construction and to re-appropriate il critically to the present context. Sequentially in the areas of philosophy, biology, neuroscience, and architecture it has been variously discussed on the problems about the synthesis of biology and techniques. In the context of the consilience of biology and technique Werner Nachtigall, who has intended to shed light on the morphological principles in the natural construction, founded the 'Bionik', which is different from the bionics or the biomechanics that are oriented to the imitation of natural forms. The space design that is on the basis of the Bionik treats organisms as a functional whole. Therefore the Bionik space design follows two kinds of principle such as the principle of analogy and the principle of optimization. After all the understanding of the consilience of nature and technique for Nachtigall and Bionik designers tends toward the explication of the complex process in which the human perceptions, the environment, and the phenomenal techniques are united together, and this complex process is associated with the space design based on the Bionik.

OSGi based Service Middleware for Context-Aware Applications (상황 인식 응용을 위한 OSGi 기반 서비스 미들웨어)

  • Jung, Heon-Man;Lee, Jung-Hyun
    • The KIPS Transactions:PartC
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    • v.13C no.6 s.109
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    • pp.691-700
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    • 2006
  • To support context-aware services in ubiquitous computing environments, there are required dynamic context managing, context reasoning and context modeling technologies. In previous researches, context services are designed using context ontology used in context aware middleware. So, context service cannot change the context ontology in execution time. In this paper, we propose a hierarchical ontology-based context management model and design a context-aware middleware based on this model for supporting active application adaptability and reflecting users' requirements dynamically in contextual changes. It also provides efficient support for inferencing, interpreting, acquiring and discovering various contexts to build context-aware services and presents a resolution method for context conflict which is occurred in execution of service. As the middleware is implemented on the OSGi framework, it can cause interoperability among devices such as computers, PDAs, home appliances and sensors. It can also support the development and operation of context aware services, which are required in the ubiquitous computing environment.

Design and Implementation of a Location-Based Push-Service Platform (위치기반 푸쉬서비스 플랫폼 설계 및 구현)

  • Shim, Jae-Min;Lee, Eung-Jae;Ju, Yang-Wan;Nam, Kwang-Woo;Ryu, Keun-Ho
    • Journal of Korea Spatial Information System Society
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    • v.11 no.4
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    • pp.47-55
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    • 2009
  • As the wireless internet technology such as mobile phone, WIBRO, HSDPA develops, customized location-based services for traffic, tourism, shopping, and emergency relief has lately attracted attention. For giving customized services. we should consider dynamic characteristics of moving object which continuously change their location. In this paper, we define the context trigger type of moving object and design triggering method for processing context generated by moving object. Also we propose location-based push service platform including context trigger of moving object for supporting location-based information to user. The proposed system gathers moving object stream from the terminal based on MS-assisted or Stand-alone positioning mode of embedded GPS in terminal extract user context by user device agent, and send context information to server.

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Design and Implementation of an Ontology-based Context-Aware Platform for Home Healthcare (홈 헬스케어를 위한 온톨로지 기반 상황인지 플랫폼의 설계 및 구현)

  • Jo, Jung Won;Cha, Si Ho;Ahn, Byung Ho;Cho, Kuk Hyun
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.5 no.3
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    • pp.77-86
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    • 2009
  • This paper proposes an ontology-based context-aware home healthcare platform employing environmental factors obtained from home. The proposed platform manages the health of home residents, and notifies relatives or a medical team of critical condition through context-awareness based on home ontology by using information sensed from various sensors. The ontology definition of context-awareness from the sensed information provides technically more precise decision for us. Therefore the platform can be aware of the health state of residents and environment by reasoning exactly from data gathered from various sensors and heterogeneous devices. The platform also can individually provide the customized service for users by setting priority for critical status that can be occurred in the health state of residents.

Design of platform supporting for healthcare context information service based on multi-agent (멀티 에이전트 기반 헬스케어 상황정보 서비스 플랫폼의 설계)

  • Park, Moo-Hyun;Jeong, Chang-Won;Joo, Su-Chong
    • Journal of Internet Computing and Services
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    • v.9 no.3
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    • pp.9-24
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    • 2008
  • In this paper, we describes the design of software architecture supporting for healthcare context information service platform based on multi agent in home environment. In this platform, the DOGF supports the execute object and healthcare sensors and device's logical services grouping. JADE framework can support mobility in heterogeneous environment. The multi agents on platform order to support a healthcare context information service it will be able to divide. An agent collects an environment information from distributed devices. Another an agent follows mobile-device specific and it does a different service. And an agent where it manages like this. The mobile-proxy&agent is an interface part between DOGF and JADE, support data interchange or mobility pattern. For DOGF and JADE to provide healthcare context information service, we describes the design of multi agent software platform and multi agent classification by services. Finally we showed the system environments which is physical environments and prototype based on platfonn for healthcare context information services.

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Design of Mobile Phone Middleware based on Integrated Context Provisioning Strategy (통합 상황 프로비저닝 전략을 기반으로 한 모바일 폰 미들웨어의 설계)

  • Jeong, Hyun-Jin;Won, You-Hun
    • Journal of the Korea Society of Computer and Information
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    • v.12 no.1 s.45
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    • pp.89-98
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    • 2007
  • In these days, the use of context in application running on mobile devices such as PDAs and smart Phone has become a crucial requirement for several research areas, including ubiquitous computing. mobile computing. Previous middlewares which support context provisioning uses single strategy. But, this paper proposed middleware integrated multiple strategies for context provisioning, namely internal sensors-based, external infrastructure-based, and distributed provisioning in ad hoc networks. Applications can query needed context items using SQL like context query language and require context information to use different provisioning mechanisms depending on resource availability and presence of external infrastructures.

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Design of Cloud-based Context-aware System Based on Falling Type

  • Kwon, TaeWoo;Lee, Jong-Yong;Jung, Kye-Dong
    • International Journal of Internet, Broadcasting and Communication
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    • v.9 no.4
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    • pp.44-50
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    • 2017
  • To understand whether Falling, which is one of the causes of injuries, occurs, various behavior recognition research is proceeding. However, in most research recognize only the fact that Falling has occurred and provide the service. As well as the occurrence of the Falling, the risk varies greatly based on the type of Falling and the situation before and after the Falling. Therefore, when Falling occurs, it is necessary to infer the user's current situation and provide appropriate services. In this paper, we propose to base on Fog Computing and Cloud Computing to design Context-aware System using analysis of behavior data and process sensor data in real-time. This system solved the problem of increase latency and server overload due to large capacity sensor data.

A Study on the Application of YangTaek-Theory in Ubiquitous House (유비쿼터스 주택의 양택론 적용에 관한 연구)

  • Lee Ju-Hyun;Choi Young-Chul
    • Korean Institute of Interior Design Journal
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    • v.14 no.6 s.53
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    • pp.57-65
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    • 2005
  • This research is about the methods in making computers understand the situation in regards to interaction between House and Human Behavior. In this paper, house is the ubiquitous house, as a future house, adopting ubiquitous computing presenting the interrelation of human and house - interior space, architecture, nature. And the Context Aware Model of ubiquitous house is proposed to embody the ubiquitous house. The research objective is to systematize the context in the ubiquitous house and suggest a theoretical basis to embody the ubiquitous house interacting between the House ud Human Behavior Especially, this paper focuses on the Context Aware Model based on FengShui-Theory(sp. YangTaek-Theory). The ubiquitous house is not what operates passively by human but a information-oriented house that can predict the situation and the living patterns of human. For a information-oriented house and informal living context at home, this paper uses FengShui-Theory whose central concern is the interrelation of human and nature. Through these concepts, this research will suggest how to systematize, control and manage the context at home. In the end, it is expected to offer a theoretical basis to embody the intelligent house and apply an environment design communicating between the computers and human.

Design of Dynamic Location Privacy Protection Scheme Based an CS-RBAC (CS-RBAC 기반의 동적 Location Privacy 보호 구조 설계)

  • Song You-Jin;Han Seoung-Hyun;Lee Dong-Hyeok
    • The KIPS Transactions:PartC
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    • v.13C no.4 s.107
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    • pp.415-426
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    • 2006
  • The essential characteristic of ubiquitous is context-awareness, and that means ubiquitous computing can automatically process the data that change according to space and time, without users' intervention. However, in circumstance of context awareness, since location information is able to be collected without users' clear approval, users cannot control their location information completely. These problems can cause privacy issue when users access their location information. Therefore, it is important to construct the location information system, which decides to release the information considering privacy under the condition such as location, users' situation, and people who demand information. Therefore, in order to intercept an outflow information and provide securely location-based information, this paper suggests a new system based CS-RBAC with the existing LBS, which responds sensitively as customer's situation. Moreover, it accommodates a merit of PCP reflecting user's preference constructively. Also, through privacy weight, it makes information not only decide to providing information, but endow 'grade'. By this method, users' data can be protected safely with foundation of 'Role' in context-aware circumstance.