• KAPE Magazine
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• 40호
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• pp.1-8
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• 1999

소도체 등급판정결과(`99년11월) - 돼지도체 등급판정결과(`99년 11월) - 농림부 고시 축산물등급거래규정

• KAPE Magazine
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• 통권216호
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• pp.6-7
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• 2014

• Journal of Digital Convergence
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• 제15권3호
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• pp.313-318
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• 2017

In general, users of design software such as Photoshop, search for information online when they want to obtain related knowledge. However, it is very difficult to find the exact information they want about designs because available knowledge sharing systems are very broad in what they manage, and it is rare that such systems would provide any design-specific Q&A or exchange of information functionality. In the paper we development a video based system for sharing design knowledge that supplies Q&A, lecture, knowledge trade function etc. utilizing multimedia like text, image and video reflecting the characteristics of design knowledge. The system are expected to contribute to the competitiveness of products through sharing design knowledge. In the near future the system will need to expand to a framework that can be shared with a variety of knowledge, as well as design knowledge.

• The Journal of Society for e-Business Studies
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• 제14권1호
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• pp.57-79
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• 2009

As the Web-based e-Business prevails, the volume of XML data on the Web is getting larger than ever. Although much research has been done on decomposing and storing XML data in RDB, which is now the most popular storage for XML, and on processing XML queries through their SQL counterparts, little attention was paid to how to alleviate the burden of storing massive volume of XML data. In this paper, we propose a hybrid method of storing XML data in RDB, whereby the unit of storage could be an XML subtree as well as an XML node. The part of XML data whose nodes were separately stored could be reformed into an XML subtree for storing when it gets rarely queried or less valuable for reference as time goes by. With this method, we designed and implemented a hybrid XML storage and query processing system, comparing it with the conventional system where an XML node is the only unit of storage. Through experiments, we compared storage efficiency and query processing performance, validating the effectiveness of our proposed system.

• The Journal of Society for e-Business Studies
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• 제15권4호
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• pp.1-19
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• 2010

Recently, it is necessary to process real time sensor data, which is generated from ubiquitous environments. Data, which are written by XML, are small, but, large volumes of data. Therefore, weneed to use an efficient method for processing a large amount of it. An XQuery has two types for sensor data: one is to get sensor identification and value from sensor data; the other is restructuring for user's convenience. Existing XQuery engines don't have efficient method for batch processing of sensor data. This paper proposed the twig query processing over reverse path summary, and we developed and applied restructuring batch processing method for real time processing of a large amount of sensor data. Finally, we do performance evaluation using XMark and RFID EPC data, and comparison analysis with MonetDB/XQuery and Berkeley DB XML.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2011년도 춘계학술발표대회
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• pp.1195-1198
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• 2011

인터넷 및 스마트폰 등 모바일 시장의 급성장으로 다양한 채널이 발달하여 금융거래가 급속하게 증가함으로써 시스템 자원이 부족하고 또한, 급변하는 금융시장에서 경쟁력을 잃지 않기 위하여 국내의 금융권 시스템들은 차세대를 진행하면서 경쟁적으로 프레임웍을 도입하여 프로젝트를 진행하였거나 또는 진행하고 있다. 프레임웍은 요청한 거래를 검증하고, 처리하여 결과를 반환할 수 있도록 여러 가지 편의성을 제공하지만, 동일 테이블 데이터를 매 거래마다 데이터베이스를 조회함으로써 데이터베이스 서버의 부하가 증가하고 거래 처리가 지연되는 문제점이 있다. 본 논문에서는 프레임웍 기반의 매 거래마다 동일 데이터를 데이터베이스로부터 질의함으로써 발생하는 거래처리 지연을 극복하고 보다 빠른 응답 처리를 위하여 1) 대부분 조회를 처리하는 테이블에 대해서 테이블 단위로 Primary key을 이용하여 공유메모리에 저장하고, 많은 응용프로그램 간에 공유하는 방식으로 거래를 처리함으로써 디스크 I/O나 네트워크 I/O, DBMS 자체 프로세싱을 크게 감소하여 전제적으로 시스템의 성능을 향상시키며 2) 공유메모리에 저장하고 있는 데이터와 데이터베이스 테이블에 저장된 데이터간의 동기화를 지원하는 Primary key 기반 T-Cache(Table Cache) 알고리즘을 제안한다.

• The Journal of Society for e-Business Studies
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• 제11권1호
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• pp.1-23
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• 2006

As data on the Web is more and more in XML due to proliferation of Web applications such as e-Commerce, it is strongly required to rapidly process XML queries. One of such techniques is XML query caching. For frequently submitted queries, their results could be cached in order to guarantee fast response for the same queries. In this paper, we propose techniques for XML query performance improvement whereby the set of node identifiers(NIS) for an XML query is cached. NIS is most commonly employed as a format of XML query result,, consisting of the identifiers of the XML elements that comprise the query result. With NIS, it is suitable to meet the Web applications data retrieval requirements because reconstruction and/or modification of query results and integration of multiple query results can be efficiently done. Incremental refresh of NIS against its source updates can also be efficiently done. When the query result is requested in XML, however, materialization of NIS is needed by retrieving the source XML elements through their identifiers. In this paper, we consider three different types of NISs. proposing the algorithms of their creation, materialization, and incremental refresh. All of them were implemented using an RDBMS. Through a detailed set of performance experiments, we showed the efficiency of the proposed XML query caching techniques.

• The Journal of Society for e-Business Studies
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• 제16권4호
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• pp.257-281
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• 2011

The purpose of this study is to examine the effect of social anonymity on community quality and find out mediating factors that affect the relationship between social anonymity and community quality in online community sites. This study focuses on the factors such as self expression, self control, and community ties to investigate their mediating roles on the relationship between social anonymity and community quality. Also, discussion quality and information quality are used to measure online community quality. The results of this study show that social anonymity is directly related to discussion quality but not related to information quality. As for the mediating effects, self expression, self control and community ties are all shown to have strong mediating effects on the social anonymity and community quality relationship.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2018년도 춘계학술발표대회
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• pp.123-125
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• 2018

본 논문은 블록체인 알고리즘을 탑재한 HEMS 시스템을 활용하여 전력의 생산과 소비를 동시에 수행하는 에너지 프로슈머들 간의 안전하고 신뢰성 있는 전력거래 시스템을 구현하기 위한 방안을 연구하였다. 신재생발전원의 가정내 보급이 증대하고 HEMS를 통해 댁내 에너지관리가 보다 스마트해지고 전력정보의 실시간 취득이 가능해짐에 따라 동일 변대주 인근 배전선로와 연결된 에너지 프로슈머들간의 소규모 전력거래에 있어 블록체인 기반 기술 적용이 보다 용이해 질 것으로 예상된다. 또한, HEMS를 활용하여 블록체인 기반 P2P간의 전력거래에 있어 기술적 한계를 극복하기 위한 추가적인 연구 방향을 함께 제시하였다.

• The Journal of Society for e-Business Studies
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• 제7권3호
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• pp.21-48
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• 2002

ebXML is the international technical framework specification that enables Internet-based B2B electronic business using XML, It was standardized by UN/CEFACT and OASIS on May 2001. Registry and Repository is the core of ebXML. It supports registry services which is composed of object management service and object query management service. The object management service manages the object's life cycle and the object query management service provides a mechanism to approach metadata of stored objects. Up to now, implementations of ebXML Registry object query management system don't support full functions of the specification completely. We implemented all the functions of ebXML Registry Service Specification vl.0. This system supports Browse ＆ Drilldown Query, Filter Query, SQL Query, and Object Retrieval Query services. And it also supports Content-based Query service which is not specified in the ebXML RS specification. The Content-based Query service is a repository service which makes it possible In pose content based queries of repository items and which will be specified on the RS specification v2.0.