• Title/Summary/Keyword: 미들웨어 서비스

Search Result 701, Processing Time 0.026 seconds

Open GIS Component Software Ensuring an Interoperability of Spatial Information (공간정보 상호운용성 지원을 위한 컴포넌트 기반의 개방형 GIS 소프트웨어)

  • Choe, Hye-Ok;Kim, Gwang-Su;Lee, Jong-Hun
    • The KIPS Transactions:PartD
    • /
    • v.8D no.6
    • /
    • pp.657-664
    • /
    • 2001
  • The Information Technology has progressed to the open architecture, component, and multimedia services under Internet, ensuring interoperability, reusability, and realtime. The GIS is a system processing geo-spatial information such as natural resources, buildings, roads, and many kinds of facilities in the earth. The spatial information featured by complexity and diversity requires interoperability and reusability of pre-built databases under open architecture. This paper is for the development of component based open GIS Software. The goal of the open GIS component software is a middleware of GIS combining technology of open architecture and component ensuring interoperability of spatial information and reusability of elementary pieces of GIS software. The open GIS component conforms to the distributed open architecture for spatial information proposed by OGC (Open GIS Consortium). The system consists of data provider components, kernel (MapBase) components, clearinghouse components and five kinds of GIS application of local governments. The data provider component places a unique OLE DB interface to connect and access diverse data sources independent of their formats and locations. The MapBase component supports core and common technology of GIS feasible for various applications. The clearinghouse component provides functionality about discovery and access of spatial information under Internet. The system is implemented using ATL/COM and Visual C++ under MicroSoft's Windows environment and consisted of more than 20 components. As we made case study for KSDI (Korea Spatial Data Infrastructure) sharing spatial information between local governments, the advantage of component based open GIS software was proved. Now, we are undertaking another case study for sharing seven kinds of underground facilities using the open GIS component software.

  • PDF

Semantic User Profiles Manager based on OSGi (OSGi기반 시맨틱 사용자 프로파일 관리자)

  • Song, Chang-Woo;Kim, Jong-Hun;Chung, Kyung-Yong;Rim, Kee-Wook;Lee, Jung-Hyun
    • The Journal of the Korea Contents Association
    • /
    • v.8 no.8
    • /
    • pp.9-18
    • /
    • 2008
  • Research is being made for users' convenient access to services such as personalized data and contents services. The use of information and the fusion of services in various devices and terminals suggest the necessity to know what personalization mechanism is used to provide high quality contents at a time and place desired by users. Existing mechanisms are not easy to be handled by other service providers because each service provider has different preference and personal information, and are very inconvenient because service users have to set up and manage by themselves. Thus, the present paper proposes a Semantic User Profiles Manager based on OSGi, middleware for the provision and extension of semantic services, in order to manage users' profiles dynamically regardless of service provider. In addition, this paper defines a personalized semantic profile that enables user profiling, ontological domain modeling and semantic reasoning. In order to test the validity of this paper, we implemented semantic profiles into a bundle running based on OSGi. When users enter the range of the service area and use various devices, the semantic service matches in correspondence with semantic user profiles. The proposed system can easily extend the matching of services to user profiles and matching between user profiles or between services.

Adaptively Flexible Service Discovery and Advertisement for SSDP of UPnP in Wireless Ad-hoc Network (무선 애드 혹 환경에서의 UPnP의 SSDP 기능 향상을 위한 서비스 발견 및 광고 기법)

  • Jung, So-Ra;Youn, Hee-Yong
    • The KIPS Transactions:PartA
    • /
    • v.17A no.5
    • /
    • pp.237-248
    • /
    • 2010
  • UPnP(Universal Plug and Play) is a middleware of DLNA (Digital Living Network Alliance) services a home network. UPnP supports the connections between each other devices in networks and also provides service discovery and advertisement with SSDP(Simple Service Discovery Protocol), which is generally designed for wired networks. SSDP operates on multicasting discovery request and advertisement and unicasting a reply in networks. It is a challenge issue for service discovery protocol such as SSDP to provide a stable and effective service in wireless ad-hoc networks. Wired based service discovery protocol does not consider the dynamics of wireless ad-hoc network. In that case, the nodes are freely in or out. Therefore, this paper proposes a flexible SSDP(fSSDP) which is a peer-to-peer(P2P) discovery protocol adopted for wireless ad-hoc Networks. It is implemented on the extension of SSDP. fSSDP supports a functionality that the broadcast area of service discovery dynamically changes with the periodically updated area of advertisement. It is good for reducing messaging overhead caused from the broadcast flooding of service discovery in wireless ad-hoc network.

An Event-Driven Dynamic Monitor for Efficient Service Monitoring (효율적인 서비스 모니터링을 위한 이벤트 주도 동적 모니터)

  • Kum, Deuk-Kyu;Kim, Soo-Dong
    • Journal of KIISE:Software and Applications
    • /
    • v.37 no.12
    • /
    • pp.892-908
    • /
    • 2010
  • Services in SOA are typically perceived as black-box to service consumers, and can be dynamically evolved at runtime, and run on a number of unknown and heterogeneous environments. Because of these characteristics of the services, effective and efficient monitoring of various aspects on services is an essential functionality for autonomous management of service. But the problem with or limitation in conventional or existing approaches is, that they focus on services themselves, ignoring the effects by business processes. Consequently, there is a room for service monitoring which provides more useful information of business level by acquisition of only external monitoring data that depend on specific BPEL engine and middleware. Moreover, there is a strong demand to present effective methods to reduce monitoring overhead which can degrade quality of services. EDA can cope with such limitations in SOA by collecting and analyzing events efficiently. In this paper, we first describe EDA benefits in service monitoring, and classify monitorring target, and present an appropriate monitoring method for each monitoring target. Also to provide the applicability of our approach, an event meta-model is defined, and event processing model and architecture based on the meta-model are proposed. And, with the proposed architecture and method, we implement a prototype of an event-driven dynamic monitoring framework which can collect and process internal and external data at runtime. Finally, we present the result of a case study to demonstrate the effectiveness and applicability of the proposed approach.

Design and Implementation of Internet GIS based on ObjectWeb (ObjectWeb을 기반으로 한 Internet GIS의 설계 및 구현)

  • Kang, Myoung-Soo;Choy, Yoon-Chul;Koh, Kyun
    • Journal of KIISE:Computing Practices and Letters
    • /
    • v.6 no.4
    • /
    • pp.441-447
    • /
    • 2000
  • In this paper, we design and implement an Internet GIS based on ObjectWeb, which makes to use various distributed services and object paradigm. We use CORBA, which is the standard of distributed object middleware and supports interoperability and reusability regardless of the execution environment and the implementation language of a distributed code, so that it easily extends established systems in networking environment and accesses distributed heterogeneous spatial data. Our method distributes parts of user interactive tasks to clients to reduce and to improve the system performance while existing approaches concentrate all workloads on a server. We implement a travel information system on the developed IGIS. Users receive services from remote servers employing a Java client system running on a web browser.

  • PDF

EDISON Platform to Supporting Education and Integration Research in Computational Science (계산과학 분야의 교육 및 융합연구 지원을 위한 EDISON 플랫폼)

  • Jin, Du-Seok;Jung, Young-Jin;Jung, Hoe-Kyung
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.16 no.1
    • /
    • pp.176-182
    • /
    • 2012
  • Recently, a new theoretical and methodological approach for computational science is becoming more and more popular for analyzing and solving scientific problems in various scientific disciplines and applied research. Computational science is a field of study concerned with constructing mathematical models and quantitative analysis techniques and using large computing resources to solve the problems which are difficult to approach in a physical experimentally. In this paper, we present R&D of EDISON open integration platform that allows anyone like professors, researchers, industrial workers, students etc to upload their advanced research result such as simulation SW to use and share based on the cyber infrastructure of supercomputer and network. EDISON platform, which consists of 3 tiers (EDISON application framework, EDISON middleware, and EDISON infra resources) provides Web portal for education and research in 5 areas (CFD, Chemistry, Physics, Structural Dynamics, Computational Design) and user service.

A Method of Implementation for Integrated Aeronautical Data Management Network Using SWIM Architecture (SWIM 구조를 이용한 항공데이터 종합관리망 구축 방안)

  • Kim, Jin-Wook;Jo, Yun-Hyun;Kim, Sang-Uk;Yoon, In-Seop;Choi, Sang-Bang;Chung, Jae Hak;Park, Hyo-Dal
    • The Journal of The Korea Institute of Intelligent Transport Systems
    • /
    • v.12 no.6
    • /
    • pp.44-53
    • /
    • 2013
  • Ongoing SWIM(System Wide Information Management) with the United States and European countries as the center is a part of the ASBU(Aviation System Block Upgrade) program improved performance of aeronautical data system in the International Civil Aviation Organization and a core technology of Integrated Aeronautical Data Management Network to elevate service through digitally aeronautical information management. Therefore, in this paper, we analyze SWIM architecture and network applied the concept of SOA(Service Oriented Architecture), and propose methods of implementation transforming applications operating established legacy aeronautical data system into integrated aeronautical data management network through adapter technology. This will allow development of middleware and application suitable for the next generation infrastructure network environment for efficient ATM(Air Traffic Management)and provide timely required information for users.

A Study of The Secure Mobile Healthcare System for Medical Grid Devices (메디컬 그리드 장치를 위한 안전한 모바일 헬스케어 시스템에 관한 연구)

  • Choi, Gyoo-Seok
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.8 no.6
    • /
    • pp.89-95
    • /
    • 2008
  • The introduction of wireless information technology gives rise to new mobile services in all kinds of areas of out daily life. Mobile healthcare system is a production of composite ICT (Information and Communication Technology) which focused on signal sensing, processing, and communication in wireless environment. The mobile and wireless revolution promises not only expanded access to patient health information, but also improved patient care. In this paper, we describe a surrogate host based mobile healthcare information system which utilized Grid computing for real-time ECG signal processing. The surrogate host provides seamless interface between mobile device and Medical Grid portal. The security extension of GSI (Grid Security Infrastructure) allows mobile users to access Grid portal in a secure and convenient manner. The presented system architecture can be used as a secure enterprise mobile healthcare system for hospital physicians.

  • PDF

A Study on Workers' Risk-Aware Smart Bands System in Explosive Areas (폭발위험지역 근로자 위험 인지형 스마트밴드시스템에 대한 연구)

  • Lee, Byong-Kwon
    • Journal of Internet of Things and Convergence
    • /
    • v.5 no.2
    • /
    • pp.73-79
    • /
    • 2019
  • Research is underway on services and systems that provide real-time alerts for suffocating gases and potentially explosive materials, but currently smart bend type services are lacking. This study supports real-time identification of explosion hazards due to static electricity in the workplace and immediate elimination of accident occurrence factors, real-time monitoring of worker status and workplace hazards (oxygen, hazardous chemical concentration), and immediate warning and data in case of danger. We propose a method of establishing an accident prevention system through analysis. In this way, various accidents that may occur in industrial sites are monitored using IoT-based intelligent sensor nodes, wireless network technology, data processing middleware, and integrated control system, and real-time risk information at the industrial sites is prevented and accidents are prevented. By supporting a safe working environment, the company can significantly reduce costs compared to post-procurement costs.

A Study on the Improved Method for Mutual Suppression between of RFID is expected System and Algorithm (무선인식 시스템(RFID)에 적합한 알고리즘 분석 및 전파특성에 관한 연구)

  • Kang, Jeong-Yong
    • Journal of the Institute of Electronics Engineers of Korea CI
    • /
    • v.44 no.3
    • /
    • pp.23-30
    • /
    • 2007
  • RFID it reads information which is it writes, the semiconductor chip for and the radio frequency system which uses the hazard antenna it has built-in transmission of information it talks. Formation which is transmitted like this collection and America which it filtrates wey the RFID search service back to inform the location of the server which has commodity information which relates with an object past record server. The hazard where measurement analysis result the leader for electronic interference does not occur consequently together from with verification test the power level which is received from the antenna grade where it stands must maintain minimum -55dBm and the electronic interference will not occur with the fact that, antenna and reel his recognition distance the maximum 7m until the recognition which is possible but smooth hazard it must stand and and with the fact that it will do from within and and and 3-4m it must be used Jig it is thought.