• Proceedings of the Korean Society for Information Management Conference
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• 1995.08a
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• pp.63-66
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• 1995

최근 전산화의 세계적인 추세는 정보의 공유와 공동활용에 있다. 그러나 국내의 사정은 모든 도서관이 이런 필요성을 인정하면서도 자관의 이해득실 때문에 어려운 현실이다. 코넷협의회는 이러한 필요성을 바탕으로 1994년 국내 대학도서관끼리 최초로 발족되어 상호신뢰와 호양의 정신으로 운영되고 있다. 물론 현재 만족스러운 상황은 아니지만 국내의 선례가 없기에 나름대로 현장에서 최선을 다하고 있다. 따라서 본 연구는 코넷협의회 발족 및 운영 현황과 시스템 관리자가 유의해야 될 사항 등을 사례별로 논하고자 한다.

• Review of KIISC
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• v.17 no.2
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• pp.66-79
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• 2007

스팸메일은 이메일이용자들에게 정신적인 피해, 경제적 손실을 주고 있어서, 스팸메일 방지대책이 매우 필요하다. 스팸방지대책의 하나로 스팸블랙리스트에 의한 스팸메일차단방법이 있으며 이메일수신자에게 스팸메일의 수신 양을 줄여주는 효과를 얻을 수 있어, 많은 ISP, 공공기관, 학교, 기업 등에서 이용되고 있다. 그러나 스팸메일 차단에 따른 선의의 이용자가 피해를 입는 경우가 있는 단점이 있다. 본 고에서는 다양한 스팸 대응 기법을 살펴보고, 우선 스팸 대응을 위한 대형 ISP의 사례를 살펴보았다. 우리나라 스팸대응효과는 스팸대응기관 중의 하나인 스팸하우스의 스팸발생 국가순위 등으로 확인한 바, '05.3.14일 현재 스팸발생국가 TOP 10 중에 우리나라는 3위, 스팸발생 ISP Top 10중에 코넷망(kornet.net)의 스팸발생순위는 2위를 차지하였는데, '06.9월과 '07.2월의 국가순위는 6위로 개선되었고, 코넷망은 10위권 밖으로 Top 10에 나타나지 않게 되었으며 스팸 발생 건수도 상당량 감소한 것으로 나타나는 등 효과를 발휘하고 있는 것으로 분석되었다. 또한, 본 고에서는 바람직한 스팸 대응 방안을 제시하였다.

• Journal of Korea Multimedia Society
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• v.7 no.3
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• pp.438-449
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• 2004

More and more users are using the query e-mail according to the increment of use of internet. The operator of internet site desires the users to check the FAQ and Q＆A contents first before sending the query e-mail to the operator However the users try to get the solution for a problem easily by simply sending a query e-mail. Therefore the increment of query e-mail is inevitable, and the site operator is suffering from too heavy loads and spending too much time and cost to reply the query e-mail. In this paper, we are proposing an efficient method of classifying the query e-mail of users automatically by using a neural network. To verify the reasonability of our work, the query e-mails of KORNET are used as the test data, which is actually gathered in KT. A total of 210 learning data and 280 test data were used to test the performance of the proposed approach. From the experiments we got the encouraging result from the view point of application in real life. The proposed approach satisfied the request of users who wanted rapid response for their query e-mail.

• Smart Media Journal
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• v.6 no.1
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• pp.9-15
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• 2017

The trends in ICT are concentrated in IoT, Bigdata, and Cloud Computing. These mega-trends do not operate independently, and mass storage technology is essential as large computing technology is needed in the background to support them. In order to evaluate the performance of high-capacity storage based on open source Ceph, we carry out the demonstration test of Abyss Storage with domestic and overseas sites using educational network KOREN. In addition, storage media and network bonding are tested to evaluate the performance of the storage itself. Although there is a substantial difference in aspect of the physical speed among storage medias, there is no significant performance difference in the storage media test performed. As a solution to this problem, we could get performance improvement through network acceleration. In addition, we conducted actual performance test of Abyss Storage internal and external network by connecting domestic and overseas sites using KOREN network.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.8
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• pp.3366-3370
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• 2012

Bix Beiderbecke is a cornet player known as the first white jazz musician with white sound. In this study, we will see the similarity between his originality in black jazz field and 'Stream of consciousness' in 20th century's english literature. It is hard to verify how these two arts affect each other, and it is also very interesting to see the resemblance between jazz and the literature in their forms of expression. Especially, a jazz artist should have common understanding with english literature in the way of the expression, we are to pay more attention to the different form of the artistic works and study more about them to express in our way.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.10 no.4
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• pp.59-71
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• 2000

Due to the advance of computer and communication technology, intrusions or crimes using a computer have been increased rapidly while various information has been provided to users conveniently. As a results, many studies are necessary to detect the activities of intruders effectively. In this paper, a new association algorithm for the anomaly detection model is proposed in the process of generating user\`s normal patterns. It is that more recently observed behavior get more affection on the process of data mining. In addition, by clustering generated normal patterns for each use or a group of similar users, it is possible to identify the usual frequency of programs or command usage for each user or a group of uses. The performance of the proposed anomaly detection system has been tested on various system Parameters in order to identify their practical ranges for maximizing its detection rate.

• Journal of the Korea Institute of Military Science and Technology
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• v.25 no.3
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• pp.231-238
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• 2022

Mine detection has been mainly studied with images of the forward-looking sonar. Forward-looking sonar assumes the propagation path of the sound wave as a straight path, creating the surrounding images. This might lead to errors in the detection by ignoring the refraction of the sound wave. In this study, we propose a mine localization method that can robustly identify the location of mines in an underwater environment by considering the refraction of sound waves. We propose a method of estimating the elevation angle of arrival of the target echo signal in a single receiver, and estimate the mine location by applying the estimated elevation angle of arrival to ray tracing. As a result of simulation, the method proposed in this paper was more effective in estimating the mine localization than the existing method that assumed the propagation path as a straight line.