• 디지털산업정보학회논문지
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• 제14권1호
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• pp.15-25
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• 2018

ISO/IEC 15118 is a standard for communications and services for electric vehicle charging infrastructure. Although this standard deals only with data communication between an electric vehicle and a charge station, communication with the outside is essential for establishing an authentication system for vehicle certification and V2G service for electric power transmission. In this study, it was designed to verify the information of electric car charging infrastructure in electric power system through communication link between ISO/IEC 15118 electric vehicle model and IEC 61850 standard MMS protocol. This is demonstrated in the field so that the electric vehicle communication data is linked with the micro grid management system. This could be used as an element technology in other distributed power sources as well as electric cars in the future.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권5호
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• pp.2346-2361
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• 2017

A major challenge in cloud infrastructure is the efficient allocation of virtual network elements on top of substrate network elements. Path algebra is a mathematical framework which allows the validation and convergence analysis of the mono-constraint or multi-constraint routing problems independently of the network topology or size. The present study proposes a new heuristic approach based on mathematical framework "paths algebra" to map virtual nodes and links to substrate nodes and paths in cloud. In this approach, we define a measure criterion to rank the substrate nodes, and map the virtual nodes to substrate nodes according to their ranks by using a greedy algorithm. In addition, considering multi-constraint routing in virtual link mapping stage, the used paths algebra framework allows a more flexible and extendable embedding. Obtained results of simulations show appropriate improvement in acceptance ratio of virtual networks and cost incurred by the infrastructure networks.

• 정보보호학회논문지
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• 제27권2호
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• pp.241-250
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• 2017

폐쇄적으로 운영되던 과거의 기반시설과 달리 현재의 기반시설 네트워크는 IoT 기기와 외부 망과의 연계를 통한 효율적인 관리 시스템을 도입하고 있다. 이를 통해 과거의 기반시설 네트워크에 비해 생산성과 관리의 효율은 증대 될 수 있으나 외부 망과의 연계 접점이 생김에 따라 S/W 취약점과 이를 악용한 사이버 보안 이슈가 발생할 수 있으며 이에 대응하기 위한 사이버보안 가이드라인은 필수적이다. 그러나 각 기관에서 적합한 사이버보안 가이드라인을 개발하는 것이 용이하지 않아 정부 기관에서 작성한 사이버보안 점검 리스트를 활용하고 있으며 이는 각 기반시설 네트워크의 특징을 충분히 반영하지 못하는 한계가 있다. 따라서 본 연구에서는 기반시설 네트워크의 특징을 반영한 사이버 보안 가이드라인을 개발을 위해 NIST CSF[2], DoE C2M2[3] 등 주요 국가의 사이버보안 가이드라인 관련 표준과 기반시설 네트워크를 분석하고 이를 통해 기반시설 네트워크 사이버보안 가이드라인 개발 방안을 도출하고 검증방안을 제시하였다.

• 한국IT서비스학회지
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• 제15권4호
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• pp.63-72
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• 2016

Critical infrastructure has been operating in a closed environment with a completely separate information system and in the private area. However, with the current ICT environment changes due to convergence and open platforms it has increased the threats and risks to critical infrastructure. The importance of cyber security is increasing in the infrastructure control system, such as the outbreak of Ukraine blackout in 2015 by a malicious code called 'black energy'. This thesis aims to recognize the importance and necessity of protecting the critical infrastructure service, designing a security framework reflecting environmental and characteristic changes, and analyzing the management system suitable for a security framework. We also propose a theoretical basis for constructing a new security framework by comparing and analyzing seven international security management system standards, such as NIST 800-82 and IEC 62443-2-1, which are used in the control system. As a result, the environment surrounding critical infrastructure changes with the characteristics of connectivity, openness, and finality was studied, and as a response to this, many scholars and institutions present critical infrastructure security frameworks as cycle enhancement type structures, risk management structures, and management domain expansion structures. In response, the security framework encompassing these structures, CISF (Critical Infrastructure Security Framework), was designed. Additionally, through the security related international standard and criterion analysis, as a newly designed security standard suitable for CISF, IEC 62443-2-1 is reviewed and suggestions are made.

• 한국전자거래학회지
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• 제4권3호
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• pp.159-178
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• 1999

As Electronic Commerce is getting larger, the volume of Internet-based commerce by enterprise is also getting larger. This phenomenon applies to Internet EDI, Global Internet Business, and CALS information services. In this paper, a new type of cryptographic key recovery mechanism satisfying requirements of business environment is proposed. It is also applied to enterprise information infrastructure for managing employees' task related to handling official properties of electronic enterprise documents exchange. This technology needs to be complied to information management policy of a certain enterprise environment because behavior of cryptographic key recovery can cause interruption of the employees' privacy. However, the cryptographic key recovery mechanism is able to applied to any kind of information service, the application areas of key recovery technology must be seriously considered as not disturbing user's privacy It will depend on the policy of enterprise information management of a specific company.

• 대한인간공학회지
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• 제24권1호
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• pp.43-46
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• 2005

The future information technologies and service paradigm will move from PC, the general purpose desktop computing environment, to the next-generation PC that provides information any where, any time, and any device. The next-generation PC such as wearable computers are specialized to the human-centric functionalities and always-on connected services. In this study, service infrastructure of wearable computing with WBAN(Wearable Body Area Network) was suggested for the ubiquitous computing environment.

• 한국정보보호학회:학술대회논문집
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• 한국정보보호학회 2003년도 동계학술대회
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• pp.356-359
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• 2003

본 논문에서는 제안하는 Grid Computing은 PMI(Privilege Management Infrastructure)를 이용하여 효율적으로 컴퓨팅 파워의 분산 관리하고 네트？의 트래픽을 분산시키는 모델을 제시한다. 또한 Agent 간 통신 및 Agent와 Server 간 통신에서 Soap Protocol과 SSL Protocol을 접목하여 보안 RPC통신을 기반으로 데이터의 무결성과 기밀성을 보장한다. 본 논문에서 제안한 모델은 Agent를 효과적으로 관리하고 네트워크의 트래픽을 감소시킴과 더불어 Grid Computing의 성능이 개선될 것으로 기대된다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2003년도 봄 학술발표논문집 Vol.30 No.1 (C)
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• pp.481-483
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• 2003

이동 장비들은 베터리를 전원으로 하고 있으며 이들이 사용하는 무선 통신에 소모되는 전력을 줄이는 것은 베터리의 적은 전력량을 고려해 볼 때 매우 중요하다. 본 논문은 802.11b infrastructure환경에서 저전력 통신 기법을 개발하기 위해 전송 전력이 통신 성능에 미치는 영향을 실험하였다. 실험 결과 사무실 수준의 공간에서는 성능에 영향을 미치지 않으면서 전력을 낮출 수 있고, 이 경우 전송으로 인한 전력 소비에서 18%정도의 전력 절감이 가능하리라는 것을 확인 할 수 있었다.

• 복식문화연구
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• 제17권3호
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• pp.512-522
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• 2009

The purpose of this study is to analyze IT infrastructure of Korean apparel industry in order to enhance business effectiveness and customer's satisfaction in information society with global networks. For this study, the questionnaires were distributed to 57 apparel industries in Korea. The data were analyzed by factor analysis, descriptive statistics, Cronbach's alpha coefficient, multi regression analysis. The results of this study are as follow: First, Considering the apparel industry, construction of information system is essential for assistance of information policy and utilization of information. Understanding of e-business policy affects profits of suppliers. Second, Apparel industry with higher information policy has higher productivity with flexibility. Third, Apparel industry which has close relationship with suppliers has better customer support. Flexible scheduling and production line are important factors for quick response of customer's order and need.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2006년도 하계종합학술발표회 논문 초록집
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• pp.603-603
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• 2006