• 한국공간정보시스템학회:학술대회논문집
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• 2000.06a
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• pp.51-63
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• 2000

현재 지리정보 기술의 세계적인 추세는, ISO 나 OGC 등의 국제 표준기구에서 제시하고 있는 상호 운용성을 지원하기 위한 3계층 구조의 인터넷 GIS로 나아가고 있다. 특히 OGC 에서는 인터넷 환경에서 표준 인터페이스를 통해 다양한 데이타 소스의 지리정보를 접근하여 기존의 웹 브라우저로 표현하는 구조의 웹 매핑 테스트베드를 제시하고 있다. 3계층 구조의 인터넷 GIS에서의 문제점은 각 계층간의 통신 횟수와 데이타 전송량이 많고, 미들웨어 컴포넌트에서의 데이터 변환으로 인해 속도가 저하되는 것이다. 데이타 전송량과 데이타 변환량으로 인한 문제점은 미들웨어 계층에서 공간 데이터를 캐슁함으로써 해결될 수 있다. 본 논문의 핵심 아이디어는 미들웨어 컴포넌트들 사이에 공유 캐쉬를 두고, 여러 클라이언트들이 공통적으로 접근하는 데이타를 중심으로 캐쉬를 관리하는 것이다. 본 논문에서 제시하는 기법은 질의 영역에 대해 확장된 영역을 캐슁함으로써, 하나의 클라이언트 입장에서 근접한 영역의 질의에 대한 사용자 응답 시간을 줄일 수 있다. 또한 캐쉬 교체를 위해 접근 빈도수 중심의 교체 함수를 취함으로써 여러 클라이언트들에 대해 데이타의 재사용성을 높일 수 있다.

• Journal of IKEEE
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• v.26 no.1
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• pp.1-9
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• 2022

In order to secure the reliability of the power system and to increase the penetration level of distributed energy resources (DERs), requirements such as IEEE 1547 have been revised to strengthen the grid connection standards for DER. This paper proposes a control scheme for smart inverter functions based on IEEE 1547-2018 that satisfy these standards, and introduces a power HILS-based test platform built for verification of smart inverter. Among the smart inverter functions, Volt-var and Frequency-watt allow the curve to be set from the upper level to comply with the interoperability and operation time of enable signals for each function are controlled by references from the upper level. According to the requirement, Volt-var and Frequency-watt are performed via power HILS platform and verified through the measurement results that all of the specified type tests were satisfied.

• Journal of Platform Technology
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• v.8 no.2
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• pp.32-43
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• 2020

The Unmanned Aerial Vehicle(UAV) system has been mainly used for military domains, but it also widely applied to used in the civilian domains. In civilian domains, low-cost and small-sized UAV systems are mainly applied in various industries. The software that operates UAV systems has a lot of common functions. However, even though there are many common functionalities of the software, changing the devices may cause a problem requiring software modification. These problems degrade interoperability, modularity and portability in UAV systems. In order to solve the problems, an Open System Architecture(OSA) has been proposed. In this paper, we propose a UAV system software architecture based on Future Airborne Capability Environment(FACE) standard. Our system can support UAV systems of various platforms in the civilian domains, which is supplied in small quantity batch production. And it has the advantages of software consolidation and portability. Finally, We describe the development and conformant methodology of the software based on the FACE standard using open development tools.

• Journal of Korea Multimedia Society
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• v.12 no.11
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• pp.1680-1691
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• 2009

To improve the quality of healthcare and build up the health delivery system, electronic health record system is important for healthcare institutions providing health services. However, the systems currently operated in domestic healthcare institutions use independent software interface with distributed environment for data search and process. Therefore, it raises an additional expense to buy or develop each interface module when there is a link to new system and the problem of complexity. To solve these problems, this study implemented the service oriented architecture basis for home nursing service and carried out an assessment. The study defined the process modeling and business requirements based on the scenario of service and drew 17 suitable services based on five verification items for service design. To draw the final service, seven services were selected by service litmus test (SLT). The study found that, by the improvement of business process for healthcare service support department, SOA based information system has an effect of time reduction of patient processing time. In conclusion, to enable the hospital information system to cope with various demands of healthcare consumers, it is necessary to consider the application of SOA technology which has excellent interoperability, reusability and maintenance.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04b
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• pp.6-8
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• 2000

웹 환경에서 OpenGIS(Open Geodata Interoperability Specification)의 상호 운용성을 검증하기 위한 웹 매핑 테스트베드는 기존의 웹 브라우저를 사용하여 다양한 데이터 서버에 저장된 지리 정보를 발견, 접근하는 것을 목적으로 한다. 이 환경에서 클라이언트는 맵 서버가 XML(Extensible Markup Language)로 부호화한 지리 정보를 전송 받아 화면에 출력할 뿐만 아니라, 이러한 XML 지리 정보에 대해 공간 분석을 수행해야 한다. W3C(World Wide Web Consortium)의 DOM(Document Object Model)은 XML 분석을 위해 표준화된 인터페이스를 제시하고 있으나 공간 분석을 위한 인터페이스는 지원하지 않는다. 본 논문은 웹 환경에서 다양한 데이터 서버로부터 전송된 XML 지리 정보의 공간 분석 방법을 제시한다. 먼저 공간 분석을 위해 국제 표준화 기구에서 제시된 공간 연산자들을 분류한다. 그리고 DOM에 공간 연산을 지원하는 공간 연산 인터페이스를 추가한 GDOM을 제시한다. 마지막으로 클라이언트에서 GDOM을 이용하여 공간 분석을 수행하는 경우에 공간 연산자 수행 방법을 기술한다.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2003.05a
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• pp.385-391
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• 2003

상이한 IT 환경 기반의 여러 기업이 협업하는 방법 중 하나가 각 기업이 가진 비즈니스를 웹서비스로 오픈하고 웹서비스 협업 프레임워크 위에서 상호 협업하여 다자간 비즈니스 프로세스를 구축하는 것이다. 본 논문의 시스템은 웹서비스 기반 비즈니스 프로세스 모델링 언어인 BPEL4WS 위에 협업 프레임워크 명세인 WS-Coordination / Transaction 프레임워크를 결합한 아키텍처를 구현한 서비스 통합 시tm템이다. 이 시스템 위에 다자간 비즈니스 프로세스를 운용할 수 있는 BPM 포탈인 금융포탈을 구축하여 본 논문의 시스템 활용성을 검증하였다. 또한 웹서비스. 협업 프레임워크를 실 업무에 적용할 때 예상되는 문제점을 미리 도출하고 그에 대응하기 위한 목적으로, 이 시스템의 협업 기능에 대해 테스트를 실시 하였다.

• Journal of the Korea Society for Simulation
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• v.19 no.4
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• pp.249-259
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• 2010

Synthetic environment data used in defense M&S fields, which came from various organization and source, are consumed and managed by their own native database system in distributed environment. But to manage these diverse data while interoperation in HLA/RTI environment, neutral synthetic environment data model is necessary to transmit the data between native database. By the support of DMSO, SEDRIS was developed to achieve this requirement and this specification guarantees loss-less data representation, interchange and interoperability. In this research, to use SEDRIS as a standard simulation database, base research, visualization for validation, data interchange experiment through test-bed was done. This paper shows each research case, result and future research direction, to propose standardized SEDRIS usage process.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.813-816
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• 2013

National Radio Research Agency(RRA) has legislated technical regulations of telecommunication equipments. These technical regulations are related to safety of operators and users, service quality, accessibility for the disabled, interoperability and network connection of terminal equipment. Also, RRA drives the establishment or amendment of technical regulations for terminal equipment considering the evolution of ICT technicology and diversification of services. In 2013, RRA researched the amendment of technical regulations in relation to terminal equipment, which are related to the measurement frequency for signal band power, unwanted signal power, pulse shape.

• Korean Journal of Construction Engineering and Management
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• v.17 no.2
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• pp.99-109
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• 2016

The utilization of Building Information Modeling (BIM) has increased in order to enhance the integration of information for management and resources throughout the construction projects. Therefore, various BIM softwares have been used under open BIM environments in the building and plant construction industry. However, it has obstructive factors due to the lack of interoperability. In order to address this problem, this study conducted an interoperability analysis of BIM software focused on user-defined properties for enhanced function and efficiency. Result of the analysis shows that authoring tools have more interoperability problems than viewer tools and simulation tools have. In terms of interoperability, user-defined properties outperforms than those of system basic properties and logic data. Therefore, it was found that functional improvement and workload minimization in BIM can be attained by applying the GBS (an user-defined property for automatic manipulation of BIM proposed by Jung et al. 2013) that enables automatic link between geometric data and non-geometric data. In this respect, this study concludes that the application of user-defined property (e.g. GBS) can be an effective method for information integration throughout construction projects.

• Journal of Korea Spatial Information System Society
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• v.1 no.2 s.2
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• pp.5-20
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• 1999

Recently, the new software paradigm in information technology (IT) is the component-based development (CBD) technology that has brought as a result of the distributed computing environment (DCE). The CBD has reduced a program developing time and has been designed to make a distributed computing environment easier in the Internet and Intranet environments. These changes of software technology have influence on the geographic information system (GIS) and the CBD technology is highly needed as a point of view of the technique and policy of the geographic information system. In this paper, we designed and implemented an Enterprise Server for the efficient development and management of GIS components. Especially, the Enterprise Server was developed with the Enterprise JavaBeans Specification 1.1 that had been proposed as an industry standard by the Sun Microsystems. The Enterprise Server can allows users to manage the Unified Modeling Language (UML) and Design Patterns for the development of GIS components, develop a GIS component container which obeyed the Open Geodata Interoperability Specification (OpenGlS), manage spatial metadata through a spatial XML (eXtensible Markup Language) engine, and implement a TESTBED server for testing and verification of developed GIS components.