• Journal of radiological science and technology
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• v.41 no.6
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• pp.581-586
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• 2018

This study was conducted to analyze factors Influencing Protective Behavior against Radiation Exposure using questionnaires for 231 radiological technologists working in Computed Tomography(CT) examination room with high radiation dose in diagnostic radiology field. Statistical analysis of the collected data revealed that the reasons for partially shielding the examination part in the CT scan were the lack of protective equipment, securing of radiation justification, being annoying and maybe not being harm to adults in order. It was also revealed that the variables influencing the protective behavior were protective behavior against radiation harm, self-efficacy, protective environment, organization culture, protective knowledge and protective instrument in order. The higher the radiological protective environment(${\beta}=0.245$) and the lower the radiological protective knowledge(${\beta}=-0.034$), the more influential the protective behavior against radiation harm was. In this study, it was shown that non examination parts were not shielded in the CT scan. Therefore, it is necessary to improve the level of protective environment, to cultivate knowledge to improve the protective behavior against radiation harm and to have an intervention strategy for concrete action.

• Journal of muscle and joint health
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• v.27 no.3
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• pp.278-288
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• 2020

Purpose: This study aimed to identify the influencing factors that affect the radiation protection behavior of nurses, by applying the educational diagnostic stage of the PRECEDE Model. Methods: Participants were 167 nurses working in interventional procedure rooms and operating rooms in general hospitals and university hospitals in Korea. Data were collected from August 30 to September 25, 2019, through self-reporting questionnaires and analyzed with t-test, ANOVA, Pearson's correlation coefficients, and hierarchical multiple regression analysis using the SPSS/WIN 25.0 program. Results: The influencing factor that affects nurses' radiation protection behavior was the radiation protection environment (β=.41, p<.001), accounting for 59.6% of the radiation protection behavior (F=17.34, p<.001). Conclusion: Administrative and financial efforts to create a safe organizational atmosphere and establish a safe radiation protection environment are needed. Moreover, it is necessary to develop guidelines for nursing work in radiology to improve radiation protection behavior and reduce nurses' radiation exposure.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2007.02a
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• pp.134-137
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• 2007

최근 인터넷 사용이 폭발적으로 증가함과 더불어 웹 어플리케이션에 대한 다양한 공격이 발생하고 있다 이런 다양한 웹 공격에 대해 방어를 위해서는 효율적인 침입탐지가 가능하여야 하며, 이상행위에 대해 신속하고 적절한 정보전달이 필요하다. 다양한 보안 이벤트들에 대한 시각화 시스템은 이를 만족시켜주는 수단이다. 본 논문에서는 선행 연구였던 웹 공격 기법에 대해 분석해보고 시각화 기법을 살펴본 후, 이를 개선하여 기존 시각화 기법으로는 표현하지 못했던 웹 로그 데이터셋에 기초한 웹 이상행위의 시각화기법을 제안한다. 웹 침입탐지 시각화 시스템을 바탕으로 다양한 웹 공격에 대한 시각화 실험결과를 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11b
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• pp.893-896
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• 2002

네트워크 발달로 컴퓨터 시스템에 대한 접근이 용이해 지면서 호기심 또는 악의로 시스템을 침입 및 파괴하려는 다양한 형태의 침입 행위가 날로 증가하고 있다. 이러한 침입에 대비하여 대상 시스템에 대한 비 인가된 행위를 탐지 및 구별하고 이에 대응하는 기능을 가진 침입 탐지 시스템(IDS: Intrusion Detection System)에 대한 연구가 폭 넓게 진행되어 왔으며 다양한 형태의 IDS 들이 컴퓨터 및 네트워크 시스템에 적용되고 있다. 그러나 일반적인 IDS 는 단일 시스템에 대한 침입을 탐지하고 방어하는 것에 그 목적이 있으므로, 하나의 단위 네트워크 시스템을 효과적으로 보호하기 위해서는 단일 시스템에 대한 침입정보를 신속하게 상호 공유할 필요가 있다. 따라서 개별 Host 나 Network 장비에 분산되어 동작하는 다중의 IDS 에 대해서 통합 관리를 수행하는 통합 침입 관리시스템이 요구되어진다. 본 논문에서 제안하는 시스템은 각 IDS 들이 침입을 탐지하는 순간 이에 대한 정보를 수집하여 다른 IDS 들에게 침입에 대한 정보를 신속하게 전달하고, 정보의 종류와 수행 기능에 따른 요구사항을 프로토콜에 적절하게 반영 할 수 있는 시스템을 제안한다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2017.11a
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• pp.99-100
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• 2017

최근 이슈화되는 드론을 매개로 한 테러를 포함한 범죄 행위에 대한 예방 및 방어 기술이 발달하며 그에 따른 시장도 확대되고 있다. 본 연구는 지금 국내외 사례를 통해 어떠한 위협이 있고 관련 기술은 어떻게 발전하고 있는지 또한 관련 당국과 산업, 학계는 어떻게 준비하고 있는지 점검하고 차후 과제를 도출하는데 목적이 있다.

• Proceedings of KOSOMES biannual meeting
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• 2007.11a
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• pp.87-89
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• 2007

선행 연구개발한 집단감시 디지털 시스템(Group Digital Surveillance System for Fishery Safety and Security, GDSS- F2S)은 대단위 양식장에 침입하는 도적을 방어하기 위하여 레이더 추적정보와 적아식별 정보를 제공하는 시스템이다. 그러나 GDSS-F2S에서 제공하는 두 가지 정보만으로는 도적행위를 입증할 수 있는 법적 증거자료로 미흡하다. 본 논문에서는 이러한 문제점 해결방안의 하나로 CCD 카메라를 이용한 영상획득 장치를 개발하여 GDSS-F2S에 부가한 연구내용을 기술한다. 영상획득 장치 개발에 앞서, 실험지역의 지리적인 특성을 고려한 도적침입 예상경로 분석과 도적행위 시나리오를 기반으로 유효한 대응수단을 검토한 결과, 영상획득 장치가 유효한 대응수단임을 확인하였다. 영상획득 장치는 저가이변서 성능이 우수한 0.0001 룩스의 초저조도 CCD 카메라와 부가장치를 이용하여 개발하였다. 6개월 이상의 장기 현장실험을 통하여 본 연구에서 개발한 시스템을 평가한 결과, 주간은 물론 1 미터 앞도 식별할 수 없는 야간에도 차량의 행동과 번호판 및 사람의 행동과 인상착의 등의 영상정보를 확보할 수 있었다.

• Journal of radiological science and technology
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• v.40 no.4
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• pp.557-565
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• 2017

This study was conducted to investigate the radiation protection, awareness, and attitude of radiological technologists in the mammography room due to the low energy use of breast imaging. Data collection was performed by 222 independent radiological technologists in the breast and breast clinic of six hospitals except Jeju Island. The independent sample t-test and oneway variance analysis were performed. As a result, it was found that the lower the number of men(p<0.05), the age of 30s(p<0.05), the marriage(p<0.05), the work experience of more than 10 years(p<0.05), the working hours of 8 hours(p<0.01), the less the impact of radiation(p<0.01), the more important it was to radiation defense. appear. This is thought to be influenced by the work specificity and work environment of the mammography room, and it will be used as a basic data to raise awareness and act on the exposure through analysis with other factors.

• Journal of Radiation Protection and Research
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• v.29 no.1
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• pp.65-71
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• 2004

A multi-attribute utility analysis was investigated as a tool for the decision support of countermeasures in early phase of a nuclear accident. The utility function of attributes was assumed to be the second order polynomial expressions, and the weighting constant of attributes was determined using a swing weighting method. Because the main objective of this study focuses on the applicability of a multi-attribute utility analysis as a tool for the decision support of countermeasures in early phase of a nuclear accident, less quantifiable attributes were not included due to lack of information. In postulated accidental scenarios for the application of the designed methodology, the variation of the numerical values of total utility for the considered actions, e.g. sheltering, evacuation and no action, was investigated according to the variation of attributes. As a result, it was shown that the numerical values of total utility for the actions are distinctly different depending on the exposure dose and monetary value of dose. As increasing in both attributes, the rank of the numerical values of total utility increased for evacuation, which is more extreme action than for sheltering, while that of no action decreased. As expected probability of high dose is higher, the break-even values for the monetary value of dose, which are the monetary value of dose when the ranking of actions is changed, were lower. In audition, as aversion psychology for dose is higher, the break-even values for dose were lower.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.6
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• pp.1181-1191
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• 2021

The pandemic has rapidly developed a non-face-to-face environment. However, the sudden transition to a non-face-to-face environment has led to new security issues in various areas. One of the new security issues is the security threat of insiders, and the zero trust security model is drawing attention again as a technology to defend against it.. Software Defined Perimeter (SDP) technology consists of various security factors, of which device validation is a technology that can realize zerotrust by monitoring insider usage behavior. But the current SDP specification does not provide a technology that can perform device validation.. Therefore, this paper proposes a device validation technology using SVDD-based abnormal behavior detection technology through user behavior monitoring in an SDP environment and presents a way to perform the device validation technology in the SDP environment by conducting performance evaluation.

• Journal of Korean Clinical Nursing Research
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• v.20 no.2
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• pp.177-188
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• 2014

Purpose: This study was conducted to identify factors influencing endoscopy nurses' protective behavior against radiation exposure. Methods: Data were collected using self-report questionnaires from 122 endoscopy nurses in 21 hospitals located in Seoul, Gyeonggi province and six metropolitan cities in Korea. Collected data were analyzed using SPSS 18.0 program and included multiple regression analysis. Results: 1) There were significant relationships between protective behavior and protective environment (r=.74, p<.001), number of education sessions on radiation protection (r=.32, p<.001), number of protective devices (r=.28, p=.002), number of fellow nurses (r=.27, p=.003), and protective attitude (r=.18, p=.048). 2) Protective environment (${\beta}=0.79$, p<.001), type of hospital foundation (${\beta}=0.18$, p=.011) and marital status (${\beta}=-0.13$, p=.040) significantly predicted endoscopy nurses' protective behavior against radiation exposure (adjusted R square=.58, p<.001). The most powerful predictor for protective behavior against radiation exposure was a protective environment. Conclusion: Effective protective behavior of endoscopy nurses from radiation exposure requires improvement in their protective environment. Hospital administrators and managers should make efforts to increase protective facilities in endoscopy departments and provide endoscopy nurses with regular education on radiation protection.