• Journal of the Korea Institute of Building Construction
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• v.19 no.2
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• pp.167-174
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• 2019

Protective facilities are the last means of ensuring the survivability of personnel and assets, and there is a greater amount of matters to consider than those of general buildings. However, the Defense Military Facilities Criteria and the Ministry of the Interior and Safety, Ordinance No. 20, are only considering the expected enemy threats. In this study, we use objective and statistical methods to refine the consideration of the required capacity of protection based on the opinions of the experts. Specifically, the study adopts the Delphi technique associating the experts related to 30 defense military facilities criteria. The first-round questions were open-ended, and it compiled the points to consider related to the bulletproof and explosion - proof design. The second questionnaire was applied as closed questionnaire with 7 points scale methods. As a result of the factor analysis on the opinions of the experts, it was confirmed that the protection requirement level was due to METT + TC.

• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.5
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• pp.129-139
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• 2012

Recent changes in landscape architectural field, such as keen attention on central and local government, checks of other related fields, circumstances both inside and outside the construction industry, assume hostile attitude towards qualification system in landscape architecture. By securing the original function of qualification meets the environmental changes and accords to the technical development, practicality and serviceability of qualification as well as credit rating and professional status can be enforced. Framework redesign on landscape architecture National Technical Qualifications(NTQ) is required in order to meet the demand in the industrial fields and to reflect the technical changes. National Competency Standards(NCS) was selected as a precedent study to enhance the practicality and serviceability of NTQ as well as to avoid duplication on qualified requirements. It would provide a model to redesign the framework of landscape architecture NTQ. In this study, questions in NCS and in landscape architecture certification are compared and analyzed to review the suitability of the present landscape architecture certification items. In conclusion, the creation of master landscape architect under the present system, and the subdivision of the technician's license level to planting technician and the facility are recommended. The ability units to be qualified for each level, which would be used for future NTQ standards and university curriculums in relevant fields, are also suggested in this study.

• Journal of the Korean Geotechnical Society
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• v.19 no.4
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• pp.167-178
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• 2003

Damage and overbreak of the remaining rock induced by blasting can not be avoided during tunnel construction which may result in either short-term or long-term tunnel instability. Therefore, in this paper, a methodology to take into account the effect of blast-induced damage in tunnel stability assessment is proposed. Dynamic numerical analysis was executed to evaluate damage and overbreak of the remaining rock for the most common blasting pattern in road tunnel. Rock damage was quantified by utilizing the damage variable factor which is adopted proposed in continuum damage mechanics. The damaged rock stiffness and the damaged failure criteria are used to consider the effect of rock damage in tunnel stability analysis. The damaged geological strength index of the damaged rock was newly proposed from the relationship between deformation modulus and geological strength index. Also the Hoek-Brown failure criteria of the damaged rock was obtained using the damaged geological strength index. Analysing the tunnel stability with the consideration of the blast-induced damage of remaining rock, it was found that the extend of plastic zone and deformation increased compared to the undamaged rock. Therefore the short-term or long-term tunnel stability will be threatened when the rock damage from blasting is ignored in the tunnel stability analysis.

• The Journal of Society for e-Business Studies
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• v.23 no.1
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• pp.89-102
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• 2018

In this paper, the security characteristics of healthcare institutions were derived through analysis of previous research, and the characteristics and status of small and medium sized healthcare institutions were surveyed through field surveys of small and medium sized healthcare institutions. The security management evaluation model for small and medium sized healthcare institutions was designed and verified based on the security characteristics of small and medium healthcare institutions. For the design, we compared and analyzed existing security management system and evaluation certification system of healthcare institutions. We also confirmed the proposed security management evaluation model and the degree of sharing. In addition, we conducted validation for the statistical verification of the proposed security management evaluation model for small and medium sized healthcare institutions, and we performed the relative priority analysis through AHP analysis to derive the weight for each item. The result of this study is expected to be used as a standard of security management evaluation model that can be practiced in small and medium sized healthcare institutions.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.101-112
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• 2010

The recent trend of the hacking deals with all the IT infrastructure related to the profit of the companies. Presently, they attack the service itself, the source of the profit, while they tried to access to the service infrastructure through the non-service port in the past. Although they affect the service directly, it is difficult to block them with the old security solution or the old system and they threaten more and more companies with the demand of money menacing the protection of customers and the sustainable management. This paper aims to design and implement multi-platform network packet scanner targeting the exception handling network intrusion detection system which determines normal, abnormal by traffic. Linux and unix have the various network intrusion detection and packet management tools like ngrep, snort, TCPdump, but most of them are based on CUI (Character based User Interface) giving users discomfort who are not used to it. The proposed system is implemented based on GUI(Graphical User Interface) to support the intuitive and easy-to-use interface to users, and using Qt(c++) language that supports multi-platform to run on any operating system.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.702-705
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• 2017

최근 들어 개인정보 보호의 중요성에 대한 인식이 높아지고 있다. 개인정보 위협 요소 증가 및 유출 사고 증가 등으로 개인정보 보호 필요성이 높아지고 있으며, 개인정보보호법 발효 및 시행에 따른 기술적 보호 마련을 위하여 외국계 카드 발행사에서 지속적으로 PCI DSS(Payment Card Industry Data Security Standard)의 준수를 요청하고 있다. 카드 소유자의 데이터를 전송, 처리, 저장하는 환경에 대한 인증으로 적격업체 선정의 자격을 주기도 한다. 이러한 보안성 심의 기준이 강화되고 있으나 DB 암호화 제품인 TDE(Transparent Data Encryption) 방식의 암호화 방법은 암호화 기능 이외에 접근제어, 키 기밀성 보장을 위한 옵션의 추가 도입 검토가 필요하며, 서비스를 위해서 DB 전용 메모리 영역(SGA)의 Buffer Cache에 평문(Plain Text)으로 복호화한 후 로드하여 사용하므로 예상치 못한 또 다른 심각한 데이터 유출의 위험이 있다. 본 논문에서는 개인정보 암호화 방법을 연구하고 구현과정에서 발생한 문제에 대한 해결 과정을 설명하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.3
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• pp.926-930
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• 2010

This paper is about a development framework, which is required to develop of security system is based on component. With applying of SDLC(system development life cycle) of information system, the application of information security products DLC is required at this point of time. In this paper, we review NIST requirement specification of development method, requirement criteria of SDLC in each stage, and major security guidelines of risk assessment. Also we are reviewed major security element of SDLC, and to aid understanding of security framework based on component, present the relationship fo security design and DFD in respect of spoofing for the outside entity based on threat tree STRIDE.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.1154-1157
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• 2007

최근 몇 년 동안 피싱, 파밍, 크라임웨어에 의한 피해 사례 발생이 증가되고 있다. 현재까지의 피싱 관련 솔루션이 대부분 블랙리스트 방식이고 아직까지 피싱 사이트 판단 기준이 없으며 사람들이 이에 대한 인식의 부족으로 인해 이러한 위협을 대처하는데 많은 한계를 가지고 있다. 이에 본 연구에서는 화이트 리스트 기반 웹사이트 보안수준 확인 시스템을 설계하고 이의 파일럿 시스템을 개발하였다. 각 사이트에 대해 피싱 관련 보안수준을 확인하여 신뢰할 수 있는 사이트들을 선별하고 보안수준 정보를 제공함으로써 안전한 인터넷 이용 기반을 제공할 수 있는 방안이 마련될 것으로 기대한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.10
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• pp.602-608
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• 2020

Development of Internet technology and the spread of various smart devices provide a convenient computing environment for people, which is becoming common thanks to the Internet of Things (IoT). However, attacks by hackers have caused various problems, such as leaking personal information or violating privacy. In the IoT environment, various smart devices are connected, and network attacks that are used in the PC environment are occurring frequently in the IoT. In fact, security incidents such as conducting DDoS attacks by hacking IP cameras, leaking personal information, and monitoring unspecified numbers of personal files without consent are occurring. Although attacks in the existing Internet environment are PC-oriented, we can now confirm that smart devices such as IP cameras and tablets can be targets of network attacks. Through performance evaluation, the proposed protocol shows 11% more energy efficiency on servers than RSA, eight times greater energy efficiency on clients than Kerberos, and increased efficiency as the number of devices increases. In addition, it is possible to respond to a variety of security threats that might occur against the network. It is expected that efficient operations will be possible if the proposed protocol is applied to the IoT environment.

• Journal of the Korea Institute of Building Construction
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• v.19 no.2
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• pp.193-200
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• 2019

In the context of increasing threats of EMP by neighboring countries in the security situation on the Korean peninsula, EMP protection facilities are a very important means of ensuring military operational capability. These EMP protection facilities should be constructed by comprehensively judging various factors about operation units. However, Defense Military Facilities Criteria and National Technical Guideline for EMP protection require at least 80dB shielding effectiveness without considering other options. In this study, we use objective and statistical methods to refine the consideration of the required EMP protection level based on the opinions of the experts. To do this, the Delphi technique is used for this study, and the survey was conducted from 53 experts related to EMP protection standard in the military and civilian sectors. The first questionnaire investigated the appropriate level of EMP protection, and the second questionnaire analyzed the factors considered in establishing EMP protection level. As a result of the factor analysis on the opinions of the experts, it was concluded that the EMP protection requirement level should be determined by variables of METT + TC.