• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2005년도 춘계학술논문발표회 논문집
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• pp.219-225
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• 2005

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2005년도 춘계학술논문발표회 논문집
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• pp.213-218
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• 2005

• 한국전자거래학회지
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• 제13권3호
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• pp.153-171
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• 2008

과거 산업화 시대와 비교하여 현대 지식사회에서는 노동력의 중심이 육체노동에서 지식 노동으로 이동되었지만, 지식근로자의 생산성에는 극적인 성과가 나타나지 않고 있다. 따라서 "현대경영학의 아버지"라고 불리는 피터 드러커의 사상을 기반으로 전문가, 성과, 집중, 자기관리, 인생의 후반부의 지식근로의 요인과 지식근로자의 생산성 결정요소인 과업, 혁신, 자율성, 교육, 품질, ICT활용능력과의 연관성에 대하여 연구한 결과, 지식근로의 요인에 있어서는 성과>집중>자기관리>전문가, 인생의 후반부 순으로 연관성이 높은 것으로 나타났다. 특히 지식근로자에게 모든 생산성 결정요소와 영향요인으로는 성과로 나타났다. 따라서 지식근로자는 "성과"를 중심으로 자신의 분야에서 끊임없는 정보의 탐색과 활용을 통하여 목표를 달성하고, 조직과 사회에 공헌하면서 더불어 살아가는 공동체를 형성하는 데 앞장서야 할 것이다.

• 정보관리학회지
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• 제20권4호통권50호
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• pp.277-301
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• 2003

기업의 경쟁력을 높이기 위해서는 지식과 지식의 창조, 공유, 활용 등을 포함하는 원천으로써 지식을 자산화 할 수 있는 지식관리가 중요하다. 이 연구는 개념적 연구결과와 지식관리유형에 따라 지식창조프로세스 관계에 대한 연구를 수행하였다. 특히 효율적인 지식관리의 길라잡이를 제시하였다는 데 그 의의가 있다. 또한 은행에 지식관리유형이 시스템중심접근방법과 사람중심 접근방법이 있으며 이를 4가지 지식변환의 모드에서 지식창조의 다양한 형태를 제공하였다. 이를 위해 이 연구는 일반적으로 기업현장에서 인용되고 발생되는 지식관리유형을 실증적으로 도출하였으며, 금융산업 중에서 은행과의 관계를 규명하기 위해, 실 사례를 통해 지식관리유형과 지식창조프로세스간의 관계를 조사하고 분석하였다 이 연구결과를 기반으로 지식창조프로세스 모형을 제시하였다.

• Journal of Electrical Engineering and Technology
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• 제12권1호
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• pp.19-28
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• 2017

False data injection attacks have recently been introduced as one of important issues related to cyber-attacks on electric power grids. These attacks aim to compromise the readings of multiple power meters in order to mislead the operation and control centers. Recent studies have shown that if a malicious attacker has complete knowledge of the power grid topology and branch admittances, s/he can adjust the false data injection attack such that the attack remains undetected and successfully passes the bad data detection tests that are used in power system state estimation. In this paper, we investigate that a practical false data injection attack is essentially a cyber-attack with uncertain information due to the attackers lack of knowledge with respect to the power grid parameters because the attacker has limited physical access to electric facilities and limited resources to compromise meters. We mathematically formulated a method of identifying the most vulnerable locations to false data injection attack. Furthermore, we suggest minimum topology changes or phasor measurement units (PMUs) installation in the given power grids for mitigating such attacks and indicate a new security metrics that can compare different power grid topologies. The proposed metrics for performance is verified in standard IEEE 30-bus system. We show that the robustness of grids can be improved dramatically with minimum topology changes and low cost.

• 대한전기학회논문지:전력기술부문A
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• 제55권9호
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• pp.351-358
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• 2006

In this paper, DSPOCS(Digital Switchgear-Panel Operation and Control Solution) is designed, which is the intelligent inference based operation and control solution to obtain the safety and reliability of electric power supply in substation based on IED. DSPOCS is designed as a scheduled monitoring and control task and a real-time alarm inference task, and is interlinked with BRES(Bus Reconfiguration Expert System) in the required case. The intelligent alarm inference task consists of the alarm knowledge generation part and the real-time pattern matching part. The alarm knowledge generation part generates automatically alarm knowledge from DB saves it in alarm knowledge base. On the other hand, the pattern matching part inferences the real-time event by comparing the real-time event information furnished from IEDs of substation with the patterns of the saved alarm knowledge base.; Especially, alarm knowledge base includes the knowledge patterns related with fault alarm, the overload alarm and the diagnosis alarm. In order to design the database independently in substation structure, busbar is represented as a connectivity node which makes the more generalized graph theory possible. Finally, DSPOCS is implemented in MS Visual $C^{++}$, MFC, the effectiveness and accuracy of the design is verified by simulation study to the typical distribution substation.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제5권1호
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• pp.13-24
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• 2001

Using computer technology in teaching school mathematics creates new instructional environments. The emphases on the use of computer technology in the classrooms and in particular the use of computer-based exploration as a context of mathematics instruction have been reflected in the recommendation of the NCTM (Curriculum and Evaluation Standards for School Mathematics, 1989). Although the power of using computer technology in the exploration of mathematical problems has been recognized and stressed by many educators, we do not have many research studies on mathematics in computer-based explorations. Especially research has failed to clarify how computer technology can contribute to the construction of procedural and conceptual knowledge of mathematics. Up to now most researches on procedural and conceptual knowledge in computer environments have only focused on classifying programming languages which program language has more random access and rich interrelationship characteristic in relation to conceptual knowledge in humans, and which computer language has more characteristic flavor of procedural knowledge. How computer-based explorations affect the knowledge construction of mathematics, therefore, emerges as an issue of research on teacher education program for theoretical framework. This situation leads to do research on the effectiveness of using computer explorations in pre-service teacher education in terms of procedural and conceptual knowledge construction.

• 과학기술학연구
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• 제15권1호
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• pp.3-43
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• 2015

이 글은 <과학기술에 대한 시민의식조사>의 결과를 분석하여 한국사회에서 과학기술 시티즌십, 전문지식권력, 거버넌스의 전반적 경향성과 특징을 파악하는 것을 목적으로 하고 있다. 또한, 이를 바탕으로 과학기술 시티즌십의 현주소를 진단하고, 그 미래를 전망하고자 한다. 이를 위해 먼저, 설문조사 대상으로 선정된 13개의 이슈 중 11개를 생식기술, 원자력, 기후변화와 에너지, 식품위험, 정보통신 등 5개 세부 분야로 묶고, 각 분야의 경향성과 특징을 분석한 후, 해석과 함께 그 함의를 도출하고 있다. 그런 다음, 각 분야에서 이루어진 분석결과를 토대로 전반적 경향성을 모두 여섯 가지로 종합하고 있다. 결론에서는 앞선 분석과 해석을 바탕으로 과학기술 시티즌십의 미래를 전망하고 있다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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• pp.731-736
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• 2001

Nowadays various simulation tools are widely used for the design and the analysis of power electronic converters. From the engineering point of view it is rather difficult to parameterize power semiconductor device models without the knowledge of basic physical parameters. In recent years some data sheet driven behavioral models or so called 'wizard' tools have been introduced to solve this problem. In this contribution some experiences with some user-friendly power semiconductor models will be discussed. Using special simulation test circuits it is possible to get information on the static and dynamic behavior of the parameterized models before they are applied in more complex schemes. These results can be compared with data sheets or with measurements. The application of these models for power loss analysis of inverter type arc welding power sources will be described.

• Nuclear Engineering and Technology
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• 제49권2호
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• pp.442-449
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• 2017

Risk management of the Fukushima Daiichi Nuclear Power Station decommissioning is a great challenge. In the present study, a risk management framework has been developed for the decommissioning work. It is applied to fuel assembly retrieval from Unit 3 spent fuel pool. Whole retrieval work is divided into three phases: preparation, retrieval, and transportation and storage. First of all, the end point has been established and the success path has been developed. Then, possible threats, which are internal/external and technical/societal/management, are identified and selected. "What can go wrong?" is a question about the failure scenario. The likelihoods and consequences for each scenario are roughly estimated. The whole decommissioning project will continue for several decades, i.e., long-term perspective is important. What should be emphasized is that we do not always have enough knowledge and experience of this kind. It is expected that the decommissioning can make steady and good progress in support of the proposed risk management framework. Thus, risk assessment and management are required, and the process needs to be updated in accordance with the most recent information and knowledge on the decommissioning works.