• Journal of Electrical Engineering and Technology
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• 제4권3호
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• pp.315-322
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• 2009

Penetration and installation of a new dynamic technology known as Flexible AC Transmission Systems (FACTS) in a practical and dynamic network requires and force expert engineer to develop robust and flexible strategy for planning and control. Unified Power Flow Controller (UPFC) is one of the recent and effective FACTS devices designed for multi control operation to enhance the power system security. This paper presents a dynamic strategy based on Particle Swarm Optimization (PSO) for optimal parameters setting of UPFC to enhance the system loadability. Firstly, we perform a multi power flow analysis with load incrementation to construct a global database to determine the initial efficient bounds associated to active power and reactive power target vector. Secondly a PSO technique applied to search the new parameters setting of the UPFC within the initial new active power and reactive power target bounds. The proposed approach is implemented with Matlab program and verified with IEEE 30-Bus test network. The results show that the proposed approach can converge to the near optimum solution with accuracy, and confirm that flexible multi-control of this device coordinated with efficient location enhance the system security of power system by eliminating the overloaded lines and the bus voltage violation.

• 한국비블리아학회지
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• 제11권2호
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• pp.83-112
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• 2000

지식경제가 기반이 되는 21세기에 인터넷의 개방성, 글로벌성, 접근용이성이 기술, 산업 그리고 문화의 새로운 융합과 발전을 구축하는 중심 축이 되고 있다. 그러나, 사이버공간에서 발생되고 있는 정보화의 역기능(인터넷을 이용한 각종범죄, 정보시스템 불법침입 및 파괴, 불건전정보의 유통, 개인의 프라이버시 침해, 개인정보의 오남용 등)들은 갈수록 빈번하고 지능화되고 있어 심각한 사회적 혼란과 국가의 전략적, 행정적, 경제적으로 막대한 손실은 물론 군사활동마저 마비시키고 있는 실정이다. 따라서 본 글에서는 사이버공간에서의 범죄행위를 예방하고 차단시킬 수 있는 정보보호와 기술 그리고 그 패러다임을 조사 분석하여 기술하고 정보보호기술과 산업현황을 국내외적으로 알아본 다음 정보보호기술의 측면에서 바람직한 활성화 방안을 제시한다.

• 가정과삶의질연구
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• 제31권6호
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• pp.39-51
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• 2013

Because of the increasing demand for day care centers, The Korean government has enforced childcare accreditation. The government has created the evaluation certification system for child care facilities. But the system includes variable items, and the physical rules are not sufficient for ensuring security and quality amenities. So this study, through literature search, examined the rules of Child Care Centers in the U.S. and compared them with those in Korea focusing on the provision of security and amenities. The standards found in 4 U.S. states were investigated, and the results are as follows. The rule pertaining to the size of indoor activity spaces in C.C.C. allows the spaces to be smaller in Korea than in the U.S. There is no specific criterion for infants and toddlers in our standard. When comparing the standards of Korea with those of the United States, Korea's standards do not state specific rules about child care facilities such as indoor furniture, finishes and space planning. Additionally, the binding force ensuring compliance with the standards of physical facilities is weak. Thus, the ratings of child care standards for the physical environment should be presented in detail. And if a center does not comply with the criteria, stronger penalties will have to be imposed.

• 시큐리티연구
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• 제6호
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• pp.47-65
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• 2003

In Korea, Private security companies has steadily grown and amounts to 2,051 places as of November 30, 2002. Private security in korea is carrying out firm name role assignment to have held the police and public peace environment change factors for a standard faithfully, and protects social a little property that is a basic purpose, and it is spare no efforts in loss prevention. In spite of numeral increase of private security companies, private security companies have many problem. Moreover, they mostly did not have any remarkable in-house expertises in their own business under tough conditions. Under the unfavorable circumstances including insufficient investment and education in private security guard, there have been actually little further studies on private security business in practices. So this study mainly focused on addressing the installation security business managed by authorized companies, which amount to 96%(1,963 companies) of total 2,051 domestic security companies. Furthermore, the study formulated and modeled a series of business procedures in private security companies. A series of business procedures of private security companies can be modeled as follows : Setting of a business scope and aim market ${\Rightarrow}$ Marketing, Contact from customers(On-line or Off-line) ${\Rightarrow}$ Diagnosis of security target ${\Rightarrow}$ Submission of security operational plan ${\Rightarrow}$ Estimation of security operational plan ${\cdot}$ decision ${\Rightarrow}$ Contract ${\Rightarrow}$ Employment, selection of security guards ${\Rightarrow}$ Nomination of security guard instructors ${\Rightarrow}$ Education & training of security guards ${\Rightarrow}$ subscribe to insurance of damage liability ${\Rightarrow}$ Commitment and placement of security guards ${\Rightarrow}$ Establishment and preparation of security planning ${\Rightarrow}$ Field management and procurement of relevant security service.

• 대한설비공학회지:설비저널
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• 제24권6호
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• pp.649-663
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• 1995

• 한국전자파학회논문지
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• 제24권4호
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• pp.410-416
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• 2013

본 논문에서는 통신의 보안성과 수신 성능 향상을 위해서 역지향성 안테나를 이용한 CDSK 변조 방식을 제안한다. 카오스 신호는 신호의 비주기성과 비예측성으로 향상된 보안성을 제공한다. 그러나 카오스 변조 방식은 자기 신호와 간섭 신호로 인해서 수신 성능 열화가 발생한다. 본 논문에서는 카오스 신호 기반 CDSK 변조 방식을 사용하면서도 수신 성능을 유지할 수 있도록 역지향성 안테나를 적용한 카오스 통신 시스템의 성능을 분석한다. 시뮬레이션 결과, 5개의 배열 안테나 소자를 사용하여 역지향성 안테나를 구성할 경우, 제안한 시스템은 향상된 보안성을 제공하며, BPSK 변조를 사용한 통신 시스템과 동일한 수신 성능을 얻는 것을 확인할 수 있다.

• 융합보안논문지
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• 제15권4호
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• pp.99-105
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• 2015

사이버 공격의 지능화, 조직화로 몇몇 소수의 정보보호 전문가만으로 사이버 위협에 대응할 수 없는 시대가 되었다. 이에 따라 대학의 정보보호 관련학과가 2013년에 비해 17%나 증가했다. 하지만 대학의 교육은 실제 산업현장에 필요한 인력을 양성하는데 한계를 노출하고 있다. 본 연구에서는 이를 개선하기 위해 정보보호 직무체계 및 분야별 필요 교육 내용에 대한 연구를 조사하였다. 이후 이를 바탕으로 대학에서 학습되어야하는 정보보호 분야를 도출하였다. 그리고 도출된 분야의 교육과정을 운영하기 위한 방안으로 교육내용 선정 및 인증에 대한 방안을 제시하고 있다. 본 연구를 국가 정보보호백서에서 조사되는 정보보호 인력 현황과 연계해 대학 정보보호 관련학과의 분야를 조절할 수 있을 것으로 기대된다. 그리고 실 현장의 수요를 반영한 인력을 배출할 수 있는 정보보호 인력 중장기 계획의 기초 연구로 활용되고자 한다.

• 한국실내디자인학회논문집
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• 제24권3호
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• pp.3-14
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• 2015

The most important issue of modern cities is a crime. Crime prevention through environmental planning is needed in the urban mixed-use commercial facilities which have an important role of modern urban life, and have a positive elements for local society. The purpose of this study is to propose a direction of crime prevention through environmental planning for the urban mixed-use commercial facilities. In order to accomplish this purpose, a questionnaire survey is performed on users of urban mixed-use commercial facilities to evaluate the importance and satisfaction. The conclusions are as follows; 1) Crime prevention through environmental planning is needed in the public space which forms boundary between urban mixed-use commercial facilities and other urban facilities. 2) Safety support planning is necessary for women and children for crime prevention of urban mixed-use commercial facilities. 3) Crime prevention planning is needed in urban mixed-use commercial facilities of the various isolation space. 4) Crime prevention through environmental planning is needed for facilities of after business hours. 5) Various security alarm system considering the characteristics of the space is needed for crime prevention. 6) Community program is necessary in order to increase the utilization of external public space. 7) A sign is necessary to prevent a criminal act in urban mixed-use commercial facilities. 8) The connection of commercial facilities and activity inducing factors is needed.

• 한국의학물리학회지:의학물리
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• 제28권4호
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• pp.197-206
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• 2017

We develop guidelines for the quality assurance of radiation treatment planning systems (TPS) by comparing and reviewing recommendations from major countries and organizations, as well as by analyzing the AAPM, ESTRO, and IAEA TPS quality assurance guidelines. We establish quality assurance items for acceptance testing, commissioning, periodic testing, system management, and security, and propose methods to perform each item within acceptable standards. Acceptance includes tests of hardware and network environments, data transmission, software, and benchmarking as specified by the system supplier, and apply the IAEA classification criteria. Commissioning includes dosimetric and non-dosimetric items for assessing TPS performance by applying the AAPM classification criteria and the latest technical items from the IAEA. Periodic quality assurance tests include daily, weekly, monthly, yearly, and occasional items by applying the AAPM classification criteria. System management and security items include the state and network connectivity of TPS, periodic data backup, and data access security. The guidelines for TPS quality assurance proposed in this study will help to improve the safety and quality of radiotherapy by preventing incidents related to radiotherapy.

• 융합보안논문지
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• 제15권1호
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• pp.59-68
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• 2015

최근의 급격한 과학기술의 발전은 치안환경에 있어서 새로운 도전이자 기회가 되고 있다. 서구의 주요 선진국에서는 사회변화에 따른 치안역량 강화를 위해 일명 SMART Policing으로 불리는 경찰전략을 제시하여 첨단 과학기술을 적극 치안분야에 활용하고 있다. 이에 이 연구에서는 우리나라의 치안과학기술 연구개발조직 설립을 위한 논의를 시도하였다. 연구결과, 1단계로 경찰청 내 기획조정관 실 또는 경무국 내에 연구개발과를 신설하여 R&D 기획총괄부서 설치를 제안하고, 2단계로 경찰청 부속기관으로 (가칭) 치안과학기술센터를 설치하여, R&D 관련 업무를 담당하고 있는 각 조직의 기능들을 통합하며, 3단계로 (가칭) 치안과학연구원을 설립하여 국립과학수사연구원 및 경찰대학의 치안정책연구소를 통합하는 방안을 제안하였다. 경찰의 연구개발조직 도입은 선택이 아닌 필수사항이 되었다는 점을 재차 강조한다.