유해 정보 차단 시스템의 문제점과 해결방안에 관한 연구

최규정,오경수,박기홍 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

This paper is exhibit to interior of a country·outland seal damage by serious harmfulness information at father great harm that should be embodied new harmfulness site interception software from reclamation by presentation same province and point at issues of reclamation idling interception softwares. Each software is knowing point at issue of ability top or whether one be and hold hackish abilities. This makes will harmfulness information interception art as natural disposition harmfulness interception softwares was used sorting art of interception catalogue yoke use software of interception catalogue periodic renewal tough at unwholesomeness site to big exposure danger relatively of permission catalogue yoke from sorting art restrictives is exceedingly can approach site soling art of content class yoke excludes all information of dissolution site. To interception ha beneficial to information of interception catalogue yoke sorting art of sorting arf permission catalogue yoke is necessary of duration data base renewal sorting art of content class yoke is do not 99% over class indication of yet web site with lets class system class indication. Only when one be accomplished at class follow harmfulness site interception by making peace to so lets bins with present of parental at part time only when one mobilixation coercive way class information at web document that insertion certainly by buying class information from browser top that is doing not be is effective in interception way harmfulness site that interception can see.

뉴스 비디오 인덱싱을 위한 앵커 인식

이양원,양원보 群山大學校 情報通信技術硏究所 1998 情報通信技術硏究論文集 Vol.2 No.-

Object recognition of the multimedia data for the multimedia database construction is applied for various application. This paper propose the technique of the extraction and recognition of anchor for efficient indexing of News video. First, key frames extracted from scene change using composed algorithm of color histogram and x² histogram. Then, based on pre-knowledge-base of anchor frame, anchor candidate frames extracted. And, in the extracted anchor candidate frames, anchor is recognized by using features and geometrical informations of anchor face. The recognition of anchor in News video propose the technique of anchor recognition, the algorithm of efficient key frame extraction, and the base of News video indexing for content-based video retrival.

다중계위 셀 구성에서 트래픽 절체 방식

김정수,조원홍 群山大學校 情報通信技術硏究所 1997 情報通信技術硏究論文集 Vol.1 No.-

Now, a wireless communication has been changed and will be changed very fast. An examples of wireless communication ; pager, portable radio telephone, CT2, car phone, cellular, etc, have been used each other channel. As the use of these channel has been increased, a overflow state of channel has been already become. Because, the several methods are proposed to overcome such a overflow state of channel. In this paper, We proposed a traffic model that is increased traffic transfer methods to cell, channel distribution method and blocking probability under cellular mobile radio telephone system serving vehicular that has composed overlaid cell. This paper proposed a lot of method that is decreasing a blocking probability of handover call and analyzed each performance under simulation and we analyzed the transfer method of overflowed traffic from microcell to macrocell in micro/macro overlaid and when microcell and macrocell is not call control, classified several the transfer 7 method to satellite cell and analyzed to traffic simulation each case. After simulation analysis result appear superiority to use limit channel efficiency traffic exchange method of ③ method.

시간지원 데이터베이스 시스템에서 보안을 고려한 동시성 제어 기법

배석찬,이연식 群山大學校 情報通信技術硏究所 1998 情報通信技術硏究論文集 Vol.2 No.-

In general, Database Management Systems typically manage simple data types such as strings and integers. But Temporal Multimedia Database Systems have provided better capabilities to manage more complex data with time. In database systems, access control strategy is used so as to control the protection and the flow of database information. Thus in this paper, In proposed the concurrence control mechanisms in Temporal Database Systems.

고정 M/W 서비스에 미치는 WLL 시스템의 간섭 영향 분석

강영홍 群山大學校 情報通信技術硏究所 1998 情報通信技術硏究論文集 Vol.2 No.-

This papar analyzes the effects of interference from WLL system has been introduced as a new service into the fixed-service M/W system. To achieve this goal, the interference powers of WLL forward link and reverse link, respectively, effects on a M/W station has been examined and estimated. As the results the interference power from the forward link of WLL system increases proportional only to the base's transmitting power, but the interference power from the reverse link increases proportional to the subscriber's transmitting power and as the cell radius decreases. Although this paper analyzes only the effects of interference from WLL system into M/W system, it can be easily extended to analyze the effects of interference form M/W system into WLL system.

DC-DC Converter의 效率特性

김수식,조준익 群山大學校 情報通信技術硏究所 1998 情報通信技術硏究論文集 Vol.2 No.-

There is necessity for doing that high frequency switching to a small size and light weight devices for switching source on the DC-DC converter. we should be require examination and have discussed on this program for long time. For leakage inductance of transformer coil in high frequency circuit, in case of switching the evil effects attendant upon being excessive low voltage and large current have unexpected attack by changing current that switching losses and surge voltage losses have occurred. therefore, we have take care of semiconductor sw from this surge voltage and to protect the noise power generated particularly. In this paper we tried to obtained good condition about repress effect of surge voltage by construction of simple circuit and make satisfactory progress none-loss of zero voltage switching. we have research to clear away every obstacles by measurement immediately and the characteristics of the high degree of efficiency for DC-DC converter driving.

얼굴 영상 생성을 위한 고유 공간 모델링

김경수,강오형,이양원 群山大學校 情報通信技術硏究所 1997 情報通信技術硏究論文集 Vol.1 No.-

In this paper, we suggests a novel approach which modifies facial images by utilizing eigenvectors without facial image analysis. Eigenvectors are often used in face recognition and expression understanding, since they exhibit good statistical characteristics of a given population. Especially we present how to employ eigenvectors to reconstruct novel facial images. For this purpose, weight vectors in an eigenspace are modeled to from weight vector database and weight vectors in this database are then applied to facial images to generate desired outputs.

멀티미디어 서비스를 위한 무선 ATM 전송 기술

황치규,황재정 群山大學校 情報通信技術硏究所 1997 情報通信技術硏究論文集 Vol.1 No.-

It is necessary to get higher bandwidth, mobility, efficient hand-off functions in the field of wireless communication with rapid development of ATM and wireless techniques. Users are able to communicate over the limited communication area with the soft hand-off implementation. In this paper, we discuss channel access and hand-off process in WATM(Wireless ATM(and propose a rerouting technique, called NCNR(Nearest Common Node Rerouting), as the fast and efficient technique for rerouting user connection due to the hand-off.

상대적으로 안정한 Lattice 필터 구조

지석근 群山大學校 情報通信技術硏究所 1999 情報通信技術硏究論文集 Vol.3 No.-

This paper proposes a new lattice filter structure that has the following properties. When the filter is Linear Time Invariant(LTI), it is equivalent to the celebrated Gray Markel Lattice filter. When the lattice parameters vary with time it sustains arbitrary rate of time variations without sacrificing a prescribed degree of stability, provided that the lattice coefficients are magnitude bounded in a region where all LTI lattices have the same degree of stability. It is also presented that the resulting Linear Time Varying lattice obeys an energy contraction condition. This structure thus generalizes the normalized Gray-Markel lattice which has similar properties but only with respect to stability as opposed to relative stability.

특별활동 부서 배정업무 자동화 시스템 구축

이진관,김귀복,박기홍 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

This thesis tries to rule out the problems of the existing method in which teachers assigns students the club activity department respectively in manual manner. The proposed system assigns club activity department automatically on the web according to the students' application. And thus it reduces both time and cost spent in organizing, arranging and managing which characteristic provides teachers with a turning point in teaching- learning fields.