• 정보보호학회논문지
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• 제23권2호
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• pp.329-337
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• 2013

산업제어시스템의 사이버위협 특징은 의도하지 않았다고 하더라도 피해범위가 특정 시스템뿐만 아니라 네트워크의 서비스 제공을 위협하는 수준에 도달했다는 점이다. '보안'의 일부 범위는 단지 테러리스트나 사이버 해커의 고의적인 공격에 대한 시스템의 보호를 포함하지만, 종종 더 큰 피해는 의도적인 공격보다 부주의에 의한 설정 오류 또는 장비고장 등의 비고의적인 행위로 이루어 진다. 본 논문은 고의적 공격, 실수, 장비 고장 및 소프트웨어 문제를 포함한 ICS의 모든 비정상 행위에 대한 분류를 제안하였다. ICS의 비정상 행위 분류 기준은 고의적인 공격뿐만 아니라 부주의한 행동의 공통점과 중요한 특징을 강조하기 위해 선정되었다.

• Asia pacific journal of information systems
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• 제31권3호
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• pp.335-357
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• 2021

As reproduction of images can be done with ease, copy detection has increasingly become important. In the duplication process, image modifications are likely to occur and some alterations are deliberate and can be viewed as attacks. A wide range of copy detection techniques has been proposed. In our study, content-based copy detection, which basically applies DCT-based features for images, namely, pixel values, edges, texture information and frequency-domain component distribution, is employed. Experiments are carried out to evaluate robustness and sensitivity of DCT-based features from attacks. As different types of DCT-based features hold different pieces of information, how features and attacks are related can be shown in their robustness and sensitivity. Rather than searching for proper features, use of robustness and sensitivity is proposed here to realize how the attacked features have changed when an image attack occurs. The experiments show that, out of ten attacks, the neural networks are able to detect seven attacks namely, Gaussian noise, S&P noise, Gamma correction (high), blurring, resizing (big), compression and rotation with mostly related to their sensitive features.

• 한국안전학회지
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• 제22권4호
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• pp.102-109
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• 2007

A bioterrorism attack is the deliberate release of viruses, bacteria, or other germs(agents) used to cause illness or death in people, animals, or plant. These agents are found in nature, but it is possible that they could be changed to increase their ability to cause disease, make them resistant to current medicines, or to increase their ability to be spread into the environment. Terrorists may use biological agents because these agents can be extremely difficult to detect and do not cause illness for several days. Some bioterrorism agents, like smallpox virus, can spread from person to person, like anthrax, can not. From these agents, we discussed the characteristics of biological agents and national safety regulation on the weapons of mass destruction including bioterrorism.

• 한국재난정보학회 논문집
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• 제3권2호
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• pp.119-128
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• 2007

A bioterrorism attack is the deliberate release of viruses, bacteria, or other agents used to cause illness or death in people, animals, or plant. These agents are found in nature, but it is possible that they could be changed to increase their ability to cause disease, make them resistant to current medicines, or to increase their ability to be spread into the environment. Terrorists may use biological agents because these agents can be extremely difficult to detect and do not cause illness for several days. Some bioterrorism agents, like smallpox virus, can spread from person to person, like anthrax, can not. From these agents, we discussed the characteristics of biological agents and national safety regulation on the weapons of mass destruction including bioterrorism.

• Journal of Preventive Medicine and Public Health
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• 제37권4호
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• pp.312-320
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• 2004

Objectives : An outbreak of acute hemorrhagic conjunctivitis (AHC) caused by coxsackie A24 (CA24) virus occurred in South Korea in 2002. CA24 was isolated for the first time from patients with AHC. Therefore, this study was conducted to understand the transmission routes and prevent another AHC outbreaks. Methods : The authors conducted a questionnaire survey among 1,730 students from 2 middle schools and 1 technical high school in Gyeongju city. For statistical analysis the chi-square test was used, and chi-square for trend method showing a level of significance less than p<0.05 was proven to be significant. Variables which were proven to be significant in univariate analysis were analysed by multiple logistic regression. Results : The attack rate was 57.1%. The student groups with rubbing one s own eyes, computer usage, and sharing cellular phone had a significantly higher AHC attack rate (p<0.05). According to the multiple logistic regression, the odds ratios for male, high school, computer use, sharing cellular phone, and rubbing one s own eyes were significant (p<0.05). Conclusion : The most significant feature of this outbreak was that many students rubbed their own eyes following contact with AHC patients in a deliberate attempt to avoid going to school. Other transmission methods were computer usage and sharing cellular phone. In the future, health and school authorities must plan new strategies for the prevention of AHC.

• 대한한의학원전학회지
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• 제22권2호
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• pp.263-273
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• 2009

Taegeuk is the source and union of the two primary aspects of the cosmos, Eum(陰, Yin) and Yang(陽). The Neo-Confucian philosophers of Chinese Song(宋) dynasty associated Taegeuk with the supreme rational principle of the universe. Taegeuk is a powerful blend of self-discipline, self-defense and healing. It is an art which has grown over the millennia to include hundreds of forms and variations, and can easily take a lifetime to master. Taegeukgwon based on the Taoist philosophies of Eum(陰, Yin) and Yang(陽) is an ancient Eastern form of exercises, characterized by slow reversing movements. There is strong research evidence validating Taegeuk as a safe form of exercise having potential for health promotion and rehabilitation. Today, Taegeukgwon has spread worldwide. The Internal Training of Taegeuk is one of the exercises for regiment. As exercise, Taegeukgwon is designed to provide relaxation in the process of body-conditioning exercise and is drawn from the principles of Taegeuk, notably including the harmonizing of the Eum-yang(陰陽, Yin-yang), respectively the passive and the active principles. It employs flowing, rhythmic, deliberate movements, with carefully individually prescribed stances and positions. In practice, two masters teach the system exactly alike. As a mode of attack and defense, Taegeukgwon resembles Kungfu and is properly considered a martial art. It may be used with or without weapons. Freehand exercise to promote health was practiced in Korea. This training proved to have effect on hypertension, enervation, impotence, premature ejaculation, seminal emission, chronic gastrointestinal diseases, and arteriosclerosis. There have been many schools of Taegeukgwon. Depending on school and master, the number of prescribed exercise forms varies from 24 to 108 or more. The objective of this paper is to reconsider Taegeukgwon and its effect on the body and mind-conditioning in Hwangjenaegyeong(黃帝內經).

• 펄프종이기술
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• 제46권5호
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• pp.9-18
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• 2014

London Convention on the prevention of marine pollution by dumping of wastes and other matter prohibits the deliberate disposal of paper mill sludges at sea. In order to explore the alternative plan on the prohibition of sludge disposal at sea, the biodegradable seedling pot was developed by mixing the sludge with old newspaper (ONP) in appropriate mixing ratios. The C/N ratio of the mixed sludge was below 20, leading to rapid deterioration of the organic matters composing the seedling pot. The increased ONP contents in the seedling pot resulted in the increase of pot thickness and thereafter in the decrease of pot density. Cellulose fibers in ONP promoted water absorption of the pot but AKD addition helped the seedling pot to repel water during raising seedling. Breaking length and burst strength of the seedling pot were improved by addition of wet strength additives but air permeability was a little diminished. Biodegradable rate of the seedling pot in a soil was accelerated by the attack of soil microbes at the beginning, and finally the pot was completely degraded in 150 days in a soil.

• 한국산학기술학회논문지
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• 제13권2호
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• pp.710-717
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• 2012

바이러스, 세균, 곰팡이, 독소 등을 이용한 생물테러는 사회불안을 일으키고 사람들에게 치명적인 병을 일으킨다. 2001년 911테러를 겪으면서 생물테러 대비에 대한 중요성이 강조되고 있다. 따라서, 보건관련 종사자들은 이런 생물테러 발생이 있을 때 주도적인 역할을 하는 사람들이다. 본 연구의 목적은 보건관련 교수들에게 설문을 통해 생물테러 교육현황에 대해 알아보고자 하는데 있다. 보건관련 대학에서 학생들에게 생물테러 대비에 대한 교육을 실시하여 향후 언제 발생할지 모르는 생물테러에 대한 대비와 대처능력을 갖게 하는 것이 중요하다. 보건관련 대학에서 학생들에게 생물테러 대비에 대한 교육을 실시하여 향후 언제 발생할지 모르는 생물테러에 대한 대비와 대처능력을 갖게 하는 것이 중요하다. 연구는 2007년 3월 10일부터 6월 10일까지 3달간 우편설문조사로 진행되었다. 응급구조학과 23개교, 임상병리학과 25개교, 기타 보건관련학과에도 우편으로 설문을 배포하였다. 응급구조학과, 임상병리학과, 기타 보건관련 교수들의 97.6%에서 생물테러 교육 경험이 없었다고 응답하였다. 생물테러 교육의 내용으로 비상사태 및 재난의 정의와 특성, 테러 및 생물테러의 정의, 생물테러의 역사, 생물테러의 일반적 특성, 생물테러 가능병원체의 종류, 대비, 체계적 대응, 의학적 대응이다. 이상의 결과를 바탕으로 생물테러 교육과정을 개발하여 재난 대비 교육을 실시하고자 한다.