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GUI를 이용한 해안 지하수 관리 시스템의 전처리부 설계
이양민,주성용,고방원,이재기 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
Recently, the deficit of water resource is going to become a serious issue in the world. In this situation, the continuous guarantee and the management of water resoruces is very important. In this paper, we have studied on the GUI design techniques for Seaside Underground Water Management System. Especially we bring to a focus about its preprocessor using GUI. We improved the efficiency of input task through mutual relations among various input factors that is used in Seaside Underground Water Management System by efficient interface design techniques.
암호학적인 키 할당 기법을 이용한 XML 문서의 접근제어
반용호,김종훈 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
The XML is de facto the standard language for the exchange of information in Internet and represent an important opportunity to provide find grained access control. In order to provide a general access control methodology for parts of XML documents, we propose combining role-based access control, with a methodology originally designed for key distribution in cryptography. We describe how certain access control policies for restricting access to XML documents can be enforced by encrypting specified regions of the documents. These regions are specified using XPath filters and the policies are based on the hierarchial structure of XML documents.
S-Function Builder를 이용한 UWB 시스템의 성능해석
이성신,김기표,최정식,변건식 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
The application of UWB not only complies with the requirements of remote sensors system(ECG), it also contributes to the effectiveness of the implementations through its unique qualities such as ultra low transmission power - an important factor when dealing with biomedical equipment. In this paper, the aim is to replace the wired ECG sensor with a wireless link and design wireless UWB communication system. The various pulse shapes are presented that satisfies the FCC spectral mask and FCC part 15 rule. It is shown that UWB can be a high rate transmission over short ranges using rake receiver, with the capability for reliably transmitting 100Mbps over distance at about 10 meters.
이양민,한희도,구영철,이재기 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
Together with the development of information and telecommunication technologies, the information environment of campus also has been changed. Recently uniquitous computing technology is going to introduce into various areas. In this paper we proposed new construction models for u-campus which applies to ubiquitous computing technologies. Our proposed models are included in a network model and a service system model. The network model is classified into stage 1~3 according to supported network bandwidths and services. Also the service system model is consisted of 3 levels hierarchical structure according to their functions and characteristics.
한희도,이양민,이재기 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
With the development of ICT(Information Communication Technology), these technologies have been utilized in education field broadly Recently, u-Campus that applies the ubiquitous computing and network technologies to campus is going to appear. In this paper, we propose a intelligent information delivery service that can provide new information to students in campus. Students In campus use all sorts of information, such as educational matters, employments, entering upon studies, etc. In the database at anytime and anywhere. Using the proposed service in this paper, students can do their campus life more efficiently and easily.
국방전산망의 인터넷 연결을 위한 망구성 방법과 정보보호 정책
배태환,박병권 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
The existing National Defense Network (NDN) is a closed one that allows no access from outside for information protection. The purpose of this paper is first to propose a solution for opening NDN to Internet to enhance its flexibility, and second to propose the several policies for protecting critical military information from outside, For the first purpose, we suggest that NDN be divided into many elementary networks connected to each other by way of VPN. An elementary network consists of a gateway, a firewal, an IPS (Intrusion Prevention System), a dummy network, and many user computers. In addition, we suggest that there should be a central certification center for certifying data and identifying users. For the second purpose, we suggest some policies about separating service network from other parts of NDN and different data protection categories: ordinary, certified, and encrypted. Tn addition, we suggest that two special teams be organized responsible for information protection and new technology application respectively. To our knowledge, this paper first tried to connect NDN to Internet, and proposed a solution to solve the security problem. We believe that this paper can contribute to the national defense policy for interconnecting NDN with Internet.
2차 통계량을 이용한 도래 방향 추정 알고리즘의 성능평가
이민혁,노현민,정대훈,장은영,변건식 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
it is needed high quality and big capacity according to fast supply of mobile communication medium. Therefore, adaptive array antenna is actively studied to supply demand. DOA(Direction of Arrival) estimation is important position in adaptive array antenna. The purpose of this paper is to estimate DOA. and compare with the existing algorithm.
OVERSHOOT를 제거한 개선된 큐빅 스플라인 보간법에 관한 연구
김성현,김진만,조상현,주동현,김두영 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
This study presents the improvement of cubic spline interpolation without overshoot. The o-riginal cubic spline interpolation has overshoots between two data. They are noises in still image zoom because of getting out of the pixel value. But the improvement of cubic spline in-terpolation removes them and proffers better quality still image than other interpolations.
CIE1931 색도좌표에서 경계선과 S-모양의 변환 곡선을 이용한 화질개선을 위한 색상변환 시스템의 설계
하주영,김주현,강봉순 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
In this paper, we propose the color conversion system on the CIE1931 chromaticity-coordinate diagram by using boundary lines and S-shaped curves to emphasize blue and red colors. The proposed system prevents specific colors, such as human skins, from changing by using boundary lines that divide non-conversion areas from conversion areas. The colors in the conversion areas vary along quadratic curves with S-shaped conversion curves based on conversion ratios. The loci of the quadratic curves are very similar to the arc of the white-point line, known as the Planckian locus. The S-shaped curves are selected to change the bluish (or reddish) color to more bluish (or more reddish), while the areas around white color are not changing. The proposed system changes the colors into more bluish and reddish by moving positions of the colors toward left or right on the curves. The proposed system is also experimentally demonstrated with Xilinx Virtex FPGA XCV2000E-6BG560 and the TV set.
XML 웹 서비스 프록시 생성을 위한 WSDL 뷰어의 개발
이재윤,박경환 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2
Web service consists of standard technology, such as XML, SOAP, WSDL, UDDI and so it is independent of platforms or implementing languages. WSDL documents are standard document with an XML markup language and should be cooperated with web service development tools. But actually there is a problem that WSDL documents which is made by each development tools are not compatible when using web service developemnt tools. In this paper we devolpe WSDL viewer to solve the compatability ploblem in WSDL document with researching and analyzing.