• Journal of Digital Convergence
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• v.14 no.6
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• pp.253-261
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• 2016

As many people use internet through the various programs of PC and mobile devices, the possibility of private data leak is increasing. A program should be used after checking security of information flow. Security analysis of information flow is a method that analyzes security of information flow in program. If the information flow is secure, there is no leakage of personal information. If the information flow not secure, there may be a leakage of personal information. This paper proposes a method of analyzing information flow that facilitates SAT solver. The method translates a program that includes variables where security level is set into propositional formula representing control and information flow. The satisfiability of the formula translated is determined by using SAT solver. The security of program is represented through the result. Counter-example is generated if the program is not secure.

• Journal of the Korea Institute of Building Construction
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• v.21 no.5
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• pp.409-420
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• 2021

The safety and health ledger system, which gives the responsibility of safety and health management for construction site workers to the construction project owner, was introduced as part of the overall revision of the Occupational Safety and Health Act. There is a need to explain the system's effectiveness in terms of economic feasibility to solve the execution problem of the system caused by low awareness and implementation rate. In this study, the economic effect of implementing the safety and health ledger system was analyzed using cost-benefit analysis based on the data discussed at the time of the introduction of the system. Results show that creating and managing the design safety and health ledger caused additional costs in implementing the system. As a result of comparing the cost of preparation and the direct and indirect benefits caused by the reduction of industrial accidents, the benefits were evaluated higher than the costs. Thus, it is thought that the safety and health ledger system reduces construction work accidents and generates economic effects.

• The Journal of the Korea Contents Association
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• v.21 no.1
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• pp.434-445
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• 2021

With the development of realistic content technology and related infrastructure, interest in the use of virtual reality content is growing. Accordingly, in the field of safety education, more and more cases of producing virtual reality-based safety education (VR safety education) contents such as experiencing disaster situations realistically by supplementing the shortcomings of existing lecture-style education. This study looked at the characteristics and effects of VR safety education compared to the existing safety education, and analyzed 104 VR safety education contents produced and disclosed to date into nine classifications based on content and form. Based on the degree of relevance between items and the two axes of 'interactionability' and 'vividness of the environment', VR safety education contents could be categorized into three types: tangible lecture type, simulation type, and game type. Through this study, we hope to contribute to the planning and production of quality VR safety education contents by considering the purpose of safety education and the characteristics of types with the expected effects.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.301-308
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• 2022

The current paper not only investigates the intermediating process of the association between servant leadership and safety behavior, but also tries to find a factor which enhances the positive influence of servant leadership. To do that, this study tried to identify the mediating effect of employee's psychological safety between servant leadership and safety behavior, as well as the moderating influence of perspective taking ability in the servant leadership-psychological safety link. By utilizing 3 wave survey data from 235 employees in Korean companies with conducting structural equation modeling(SEM), this paper found that servant leadership had a positive influence on safety behavior through mediating effect of employee's psychological safety. In addition, the perspective taking ability positively moderated the positive impact of servant leadership on psychological safety.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.433-441
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• 2022

This study not only examines the intermediating process of the association between ethical leadership and safety behavior, but also tries to find a factor which moderates the positive influence of ethical leadership. To achieve it, this paper tried to identify the mediating effect of employee's psychological safety between ethical leadership and safety behavior, as well as the moderating influence of moral identity in the ethical leadership-psychological safety link. By utilizing 3-wave survey data from 227 employees in Korean companies with conducting structural equation modeling(SEM), this paper found that ethical leadership had a positive influence on safety behavior through mediating effect of psychological safety. In addition, employee's moral identity positively moderated the positive impact of ethical leadership on psychological safety.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.260-263
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• 2008

최근 들어 헬쓰케어 서비스나 웨어러블 컴퓨터 등에 대한 연구가 진행됨에 따라 몸에 장착된 디바이스들을 무선으로 연결하기 위한 WBAN기술이 주목을 받고 있다. 향후 네트워크 환경은 개인의 다양한 생체정보 등을 기반으로 최적의 맞춤형 서비스를 제공하는 IT-BT-NT 융합서비스 환경으로 진화할 것이므로 WBAN기술의 활용성은 더욱 높아질 것이다. 따라서 본 논문에서는 안전한 WBAN환경 구축을 위해서 발생이 예상되는 보안 이슈를 분석하고 이를 해결하기 위한 보안 요구사항을 제안하였다.

• Journal of the Korea Safety Management & Science
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• v.10 no.2
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• pp.211-216
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• 2008

Using this model, SN ratio of taguchi method for each of subjective factors as well as values of weights are used in this comprehensive positioning method for product. A example is presented to illustrate the model and to show a rank reversal when compared to a model that eliminates the highest and lowest customers' values allocating the weights and the subjective factors.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.01a
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• pp.241-242
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• 2013

최근 XML 문서를 활용하여 다양한 분야에서 정보를 생성하여 사용하고 있다. 이에 따라 XML문서에 대한 보안이슈가 활발히 연구되고 있다. 본 논문에서는 익명의 침입자로부터 XML 문서에 대한 보호하는 정책을 제안한다. 이 기법은 XML 문서의 중요도에 따라 Count를 두어 설정한 Count 초과시 백업서버로 파일을 복제하여 전송한 후 파일을 삭제하기 때문에 익명의 사용자로부터 중요한 XML문서를 보호할 수 있다.

• Proceedings of KOSOMES biannual meeting
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• 2018.06a
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• pp.24-24
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• 2018

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.11a
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• pp.33-38
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• 2000

최근 들어 환경문제, 특히 대도시 대기오염으로 저공해자동차의 보급에 관심이 대두되고 있는 가운데 전세계적으로 많이 활용되고 있는 천연가스자동차(Natural Gas Vehicle)가 국내에서 높은 관심과 함께 서울을 비롯한 대도시를 중심으로 보급이 추진 되고 있다. 현재 정부는 심각한 대기오염을 줄이기 위해 월드컵이 열리는 2002년에는 5000대, 그리고 2007년까지는 서울, 부산 등 7대 도시에서 운행되고 있는 시내버스 2만 여대를 천연가스 연료로 전환할 계획을 세우고 있다. (중략)