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가변 K진 완전트리와 RDF메타정보에 기반한 XML문서 저장 및 검색 프레임워크의 설계 및 구현
김규태,정회경,이수연 한국정보통신학회 2003 한국정보통신학회논문지 Vol.7 No.4
XML문서가 표준 인터넷 문서로 정착되어 감에 따라 XML문서의 효율적인 저장과 검색의 필요성이 증대하고 있다. 이에 본 논문에서는 XML문서의 효과적인 저장 모듈과 검색 모듈, 그리고 이를 웹 상에서 연동해서 사용할 수 있는 연동 API로 구성된 XML문서의 저장 및 검색 프레임워크에 대한 연구를 하였다. 저장모듈에서는 가변 K진 완전트리를 기반으로 한 DTD 독립적인 분할-통합형 저장모델을 구현하였고, 검색 모듈에서는 RDF 메타정보를 통해 구축된 색인에 대해 XPath 질의를 수행하는 XPath처리기를 구현함으로써 좀더 의미 있는 구조 검색 기능을 구현하였으며, XML-RPC, HTTP의 GET, POST, PUT 방식 API와 SOAP 방식의 API로 구성된 웹 연동 모듈을 구현하였다. This paper studied and proposed a XML document storing-and-retrieval framework based on a variant k-ary complete tree and a RDF metadata, which is composed of an effective storing module to store xml documents, a retrieving module to retrieve xml documents, and a connecting module to make this system intemperate in the web environment. In this storing module, DTD independent DOM based decomposition model using a method of addressing unique ill using a variant k-ary complete tree is adopted and is implemented. Query Processing Module includes a XPath query process and a content based retrieval function using word index for content information. To retrieve more exactly data, a structural retrieval using RDF metadata is adopted and implemented. In order to implement effectively XML document storing and retrieval system in the web environment, API using XML-RPC, API using HTTP's GET, PUT, POST and API using SOAP have been adopted and implemented.
心內膜炎이 倂發한 開存動脈管 3例의 手術經驗 : 3 cases report
金圭太 慶北大學校 醫科大學 1976 慶北醫大誌 Vol.17 No.2
慶北醫大 附屬病院 胸部外科에서 수술치험한 開存動脈管에 倂發한 心內膜炎 3例를 문헌고찰과 함께 報告하였다. Three cases of PDA associated with SBE were experienced and surgically corrected with satisfactory results. For a intractably febrile case during the course of chemotherapy of 104 days, the ductus was doubly ligated. The others were treated by division and suture technique. Clinical symptoms, signs and hospital course were presented. Antibiotic treatment before and after surgery was discussed in detail.
김규태,김종원,김수길,최종욱 대한전자공학회 2004 電子工學會論文誌-SP (Signal processing) Vol.43 No.1
We propose a now watermarking scheme that can be used to embed multiple bits and also resilient to geometrical transforms such as scaling, rotation, and cropping, based on off - axis holographic watermark that allows multiple watermark recovery without original content(cover image). The holographic watermark is that Fourier transformed digital hologram is embedded into cover image in the spatial domain. The proposed method has not only increased robustness with a stronger embedding but also imprescriptibility of the watermark in the evaluation process. To compare with the convention기 scheme, the spread spectrum, we embedded and recovered maximum 1,024 bits that consist of binary number over PSNR(peak signal-to-noise ratio) 39dB. And also, we computed robustness with BER(bit error rate) corresponding the above attack