• The Journal of Society for e-Business Studies
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• v.4 no.3
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• pp.235-246
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• 1999

There have been several approaches to integrating heterogeneous database systems in enterprises. Due to their inherent limitations, however, it has been difficult to apply them to actual situations in enterprises. In this paper, we propose EasyConnection, a system that is based on the flexible and extensible architecture and overcomes the limitations of the previous approaches, EasyConnection consists of Wrappers, Sharing Manager, and Clients, and the connections among these components are based on CORBA. It can also be used as the information management mechanism for such application systems as ERP, PDM, and EAI.

• Proceedings of the KIEE Conference
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• 2000.07a
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• pp.489-491
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• 2000

A DAS(Distribution Automation System) enhances the efficiency and productivity of a utility. It also provides intangible benefits such as improved public image and market adventages. This paper discusses an approach to the integration of NDIS(New Distribution Information System) and DAS that will allow benefits from both technologies to support a common database and distributed computing architecture, thereby improving the ability of many functions to justify implementation of integrated systems based on transferring' data comparisons.

• The Journal of Society for e-Business Studies
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• v.5 no.2
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• pp.61-79
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• 2000

For CALS environment, sharing information among business processes within the enterprise and between enterprises have been increased through common database. To support integrated data environment, data of the local legacy system must coincide with data of the global system to guarantee data integrity and transparency. This study is concerned with the implementation of this distributed database system under CALS environment. Based on existing IDEF methods, we developed a modified method which newly includes concepts of the enterprise structure, the integration of legacy databases, the distribution of data, and the distributed applications .

• Journal of Intelligence and Information Systems
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• v.5 no.1
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• pp.13-34
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• 1999

Building a knowledge base effectively has been an important research area in the expert systems field. A variety of approaches have been studied including rules, semantic networks, and frames to represent the knowledge base for expert systems. As the size and complexity of the knowledge base get larger and more complicated, the integration of knowledge based with database technology cecomes more important to process the large amount of data. However, relational database management systems show many limitations in handing the complicated human knowledge due to its simple two dimensional table structure. In this paper, we propose Object-Oriented Knowledge Store (OOKS), a knowledge base model on the basis of a frame sturcture using an object-oriented database. In the proposed model, managing rules for inferencing and facts about objects in one uniform structure, knowledge and data can be tightly coupled and the performance of reasoning can be improved. For building a knowledge base, a knowledge script file representing rules and facts is used and the script file is transferred into a frame structure in database systems. Specifically, designing a frame structure in the database model as it is, it can facilitate management and utilization of knowledge in expert systems. To test the appropriateness of the proposed knowledge base model, a prototype system has been developed using a commercial ODBMS called ObjectStore and C++ programming language.

• Proceedings of the Korea Contents Association Conference
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• 2003.05a
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• pp.356-360
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• 2003

There have been many considerations to develop new content services that integrate a variety of contents databases being already constructed and then produce new content services which are more valuable than existing services in many applications such as Internet portal, EC, and CRM. By doing the above thing, the burden of searching databases to access interesting databases and service applications can be reduced and the database availability of users is also enhanced through a single view integrating multiple contents database. This paper presents implementation details of the query processing system that is a core component of the database integration system, which can construct a virtual database that integrates databases being managed by multiple heterogeneous database systems using XML data model and support a quay facility on the integrated database.

• Journal of the military operations research society of Korea
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• v.23 no.2
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• pp.85-102
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• 1997

There have been several research efforts to support interoperability among multiple databases. In integrating multiple databases, we must resolve schema conflicts due to the heterogeneity in databases. To resolve these conflicts, not only meta-data for database schemas but also general knowledge expressing the real world meanings associated with the database schemas are required. This paper presents a uniform representation method for relational schema and general knowledge base that is composed, among other things, of concept hierarchy and thematic roles in relationship, using the knowledge representation language Lk. This representation method has a flexible descriptive power which facilitates concepts to be expressed at different levels of granularity and can describe knowledge expressed in Lk are used for input of the next step, such as conflict resolution and query processing of multiple database.

• Proceedings of the KSPS conference
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• 2002.11a
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• pp.33-36
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• 2002

As the telematics service that is the integration of information technology approaches commercialization, the necessity and gravity of speech technology is rapidly growing. The speech technology occupies important position in the telematics service because it informs the starting of service and the retrieved result. This service must provide high accuracy of speech recognition and natural synthesis of human speech in a driving environment and it is especially true for the fee-for-service. For high quality TTS, the speech synthesis technique that makes optimal synthesis database and uses efficiently this database is required. In this paper, we describe the design of phonetically balanced sentences used for speech database, the selection of service-suitable-speaker, the extraction methods of accurate phoneme boundary, and the factors which are taken into consideration in the extraction stage of prosody. Finally we show the real case that has commercially implemented.

• Journal of Aerospace System Engineering
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• v.2 no.4
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• pp.13-18
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• 2008

Airworthiness is a term used to dictate whether an aircraft is worthy of safe flight. It is illegal in most countries to fly an aircraft without first obtaining an airworthiness certificate from the responsible government agency. For developing an aircraft, the design modifications and upgrades are considered a high financial risk proposal for most Program Managers(PMs). However Design-to-Certification Integrated System can be a great help in achieving a good design solution in an acceptable amount of time and flight test. In this paper, we present a method to construct database for the Development of Design-to-Certification Integrated System. By using this database, the human designer could manage and find the regulation and requirements related with his concern effectively.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.1097-1100
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• 2012

지금 이 시대를 살아가는 현대인들은 엄청나게 방대한 양의 디지털 정보 속에서 살아가고 있다. 하지만 사람들은 이런 자료들에 노출되어 있다는 것을 망각하고, 많은 유용한 정보들을 자기의 것으로 만들지 못하고 스쳐 지나가고 있다. 가장 큰 문제는 그 정보를 우리는 믿을 수 있는가 이다. 그래서 본 논문에서는 어떠한 정보가 유용하고 필요한 정보인지 고를 수 있게 도울 수 있는 통합 오피니언 마이닝 시스템 흐름도를 제시하고자 한다. 또한 익명의 사용자들이 만들어내는 의견도 포함하여 자료의 풍부함을 도모한다.

• Journal of Information Management
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• v.40 no.1
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• pp.217-234
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• 2009

In computer-based virtual lab, a bioscience researcher who wants to obtain bio information first uses a biodiversity-related database to retrieve information on species, ecology and distribution of an organism. The researcher also needs to access gene/protein databases such as GenBank or PDB to find information on the organism's genetic sequence and protein structure. Furthermore, the researcher should search for academic papers containing the information on the organism so that his research is based on comprehensive and accurate information. This series of activities often undermines research efficiency as it takes a lot of time and causes inconvenience on the part of researchers. To solve such inconvenience, we analyzed various methods for integrated search and chosen schema integration. In addition, we analyzed each databases and extracted metadata for designing schema integration. This paper introduces a biological information retrieval system(BIRS) using schema integration and it's interface that will increase research efficiency for bioscience.