• 한국컴퓨터정보학회논문지
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• 제24권7호
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• pp.39-44
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• 2019

Data integration technology is one of the key elements in building data warehouses or big data, and is used to combine data from multiple sources and provide an integrated view to users. Traditionally, the performance of data integration uses a handed-code approach or a tool-based approach that utilizes data integration tools such as ETL. There is a debate about which methods are efficient. This study is conducted to give practitioners preparing for a data integration project an insight into how to perform data integration. This paper examines the views of experts on the controversy over the adoption of ETL tools that have been on the agenda of the data integration area for over a decade.

• 시스템엔지니어링학술지
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• 제9권2호
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• pp.69-82
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• 2013

US DoD operated JCIDS(Joint Capability Integration and Development System) for top down requirement generation. Although the JCIDS can be a good practice for the countries which are trying to shift from bottom up to top down requirement generation, it contains many processes related with review and approval. In this study we structured a joint capability integration and development process from the JCIDS eliminating the organization dependent review or approval process so that it can be applied to any organization with some modification. Furthermore we implemented the process in the computer aided systems engineering tool, Cradle, for convenient use of the process. The result of this study can provide a basic process for top down capability development, and an efficient why of doing each element of the process using CASE tool.

• International Journal of Naval Architecture and Ocean Engineering
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• 제5권1호
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• pp.147-160
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• 2013

System integration is an important element for the construction of naval combat ships. In particular, because impeccable combat system integration together with the sensors and weapons can ensure the combat capability and survivability of the ship, the integrated performance of the combat system should be verified and validated whether or not it fulfills the requirements of the end user. In order to conduct systematic verification and validation, a data analysis tool is requisite. This paper suggests the Data Extraction, Recording and Analysis Tool (DERAT) for the data analysis of the integrated performance of the combat system, including the functional definition, architecture and effectiveness of the DERAT by presenting the test results.

• 조명전기설비학회논문지
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• 제24권8호
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• pp.101-108
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• 2010

IEC 61850 기반의 변전소자동화 시스템을 구축하기 위해서는 실계통 변전소에서 엔지니어링이 가능한 IED 공통의 엔지니어링 툴 개발이 요구된다. 따라서 본 연구에서는 해외 선진사가 지원하는 시스템 및 SCL 구성 툴과 같이 IED 상호간의 통신분석 및 운영관리에 요구되는 IED 통합 엔지니어링 툴을 개발하고자 한다. 본 연구에서 개발된 IED 통합 엔지니어링 툴은 IEC 61850에서 규정하는 XML 기반의 언어로 작성된 ICD, SCL 및CID 파일을 생성, 편집 및 저장할 수 있는 프로그램이다. 특히 IEC 61850 기반으로 국내에서 개발된 IED에 대한 엔지니어링 작업 등 모든 IED에 적용이 가능한 범용적인 툴로써, IED에 대한 신뢰성 검증과 사용자 중심의 편리함과 효율성을 제공할 수 있다는 장점을 갖고 있다.

• 인터넷정보학회논문지
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• 제8권3호
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• pp.65-74
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• 2007

기업에서 데이터베이스, 데이터웨어하우스, 데이터마트, OLAP 등의 활용이 증가함에 따라 데이터베이스 통합은 일반적이며 해결해야하는 문제가 되었다. 데이터베이스를 통합하여 공유하는 방법은 여러 가지가 있지만 데이터베이스 시스템의 진정한 상호작동은 각 시스템의 데이터베이스를 의미적으로 비교하여 합병하여야 한다. 본 연구는 기존의 데이터베이스 연합 방식을 개선하여 데이터베이스 관리자가 데이터베이스의 의미를 쉽고 효율적으로 찾아내는 통합 시스템을 제안한다. 연구에서 데이터베이스 의미 정보 통합은 전역 뷰를 생성하는 도구를 사용하여 해결하였다. 전역 뷰를 구성하는 것은 복잡한 지식과 경험을 요구하기 때문에 아직까지 구성 도구가 개발된 사례가 많지 않은 핵심적인 문제이다. 제안된 기법과 도구는 데이터베이스 관리자가 사용하기에 간단하고 고기능이며 대부분의 통합 질의를 지원하도록 충분한 표현력을 갖도록 하였다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제3권2호
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• pp.133-137
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• 2003

Various bioinformatics tools for biological data processing have been developed and most of them are available in public. Most bioinformatics works are carried out by a composite application of those tools. Several integration approaches have been proposed for easy use of the tools. This paper proposes a new multi agent system to integrate bioinformatics tools in the perspective of workflow since the composite applications of tools can be regarded as workflows. For the easy integration, the proposed system employs wrapper agents for existing tools, uses XML-based messages in the inter-agent communication, and agents are supposed to extract necessary information from the received messages. This allows new tools to be easily added on the integration framework. The proposed method allows various control structures in workflow definition and provides the progress monitoring capability of the on-going workflows. In particular, agents in this system have the rule-based architecture which allows the defined rule set to be a special role agent. This feature provides fast and flexible agent development to aid in managing the complexity of bioinformatics application. This system has been partially implemented and has been proven to be a viable implementation for workflow-based bioinformatics tool integration.

• Journal of Positioning, Navigation, and Timing
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• 제7권4호
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• pp.267-275
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• 2018

The reference stations in a satellite-based augmentation system (SBAS) collect raw data from global navigation satellite system (GNSS) to generate correction and integrity information. The multipath signals degrade GNSS raw data quality and have adverse effects on the SBAS performance. The currently operating SBASs (WAAS and EGNOS, etc.) survey existing commercial equipment to perform multipath assessment around the antennas. For the multi-path assessment, signal power of GNSS and multipath at the MEDLL receiver of NovAtel were estimated and the results were replicated by a ratio of signal power estimated at NovAtel Multipath Assessment Tool (MAT). However, the same experiment environment used in existing systems cannot be configured in reference stations in Korean augmentation satellite system (KASS) due to the discontinued model of MAT and MEDLL receivers used in the existing systems. This paper proposes a test environment for multipath assessment around the antennas in KASS Multipath Assessment Tool (K-MAT) for multipath assessment. K-MAT estimates a multipath error contained in the code pseudorange using linear combination between the measurements and replicates the results through polar plot and histogram for multipath assessment using the estimated values.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 추계학술대회 논문집
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• pp.197-200
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• 1997

In the metal cutting, machining accuracies had affected by tool deflection that had been generated by acting cutting force on the cutting edges. Generally, the CAD/CAM and a solid modeler had used for the simulation of cutting process only. Some NC codes for metal cutting have been generated by these simulation results. But, machining errors that had generated by the tool deflection has not solved using these system. In this study, determination algorithm for integration zone has been studied using the commercial solid modeler. The tool deflection error has calculated by the integration zone between the small chip and the cutting edges.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제8권3호
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• pp.268-276
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• 2002

본 논문에서는 UML 개발도를 이용하여 테스트 데이타를 자동 생성하는 방안을 제안하고, XML 기술을 이용하여 개발한 "테스트 데이타 자동화 도구인 AUTEG(Automatic UML-Based Test Data Generation)"를 "Insurance System"의 사례에 적용한 결과를 분석 기술한다. AUTEG는 전체 시스템을 구성하는 모듈 사이의 인터페이스(interface)영역에 존재하는 오류 추출이 가능한 테스트도(test diagram)와 기존의 화이트 박스 테스트(white-box test)기법을 테스트도에 적용하여 테스트 데이타를 자동 생성한다. 또한 AUTEG는 통합 테스트와 시스템 테스트에 적용할 수 있으며, 사용자가 통합 테스트의 단위 모듈을 자유롭게 그룹화 할 수 있다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.782-787
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• 2004

Recently, many enterprises are introducing EAI(Enterprise Application Integration) technologies for integrating heterogeneous enterprise information systems. Among EAI levels, data-level integration is relatively straightforward and most popular. However, current commercial solutions have complex functionalities and are expensive for implementing the data integration tasks. Also, they have their own proprietary architectures and have a restricted interoperability. Proposed in this paper is the development of data integration middleware for facilitating data exchanges between the heterogeneous information systems. The main feature of this middleware is a explicit mapping of meta data about the relationships between source and target data. Based on this mapping, users who do not have expertise in information technology at the small & medium enterprise can easily handle data exchange tasks between information systems.