• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.4
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• pp.809-826
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• 2018

The entropy evaluation method for noise sources is one of the evaluation methods for the random number generator that is the essential element of modern cryptographic systems and cryptographic modules. The primary entropy evaluation methods outside of the country are more suitable to apply to hardware noise sources than software noise sources, and there is a difficulty in quantitative evaluation of entropy by software noise source. In this paper, we propose an entropy evaluation method that is suitable for software noise sources, considering characteristics of software noise sources. We select time-dependent noise sources that are software noise sources of Windows OS, and the heuristic analysis and experimental analysis are performed considering the characteristics of each time-dependent noise source. Based on these analyses, we propose an entropy harvest method from the noise source and the min-entropy estimation method as the entropy evaluation method for time-dependent noise sources. We also show how to use our entropy evaluation method in the Conditioning Component described in SP 800-90B of NIST(USA).

• Journal of the Korean Geotechnical Society
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• v.21 no.4
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• pp.51-63
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• 2005

Concrete pavement may suffer from material deterioration or structural problems, which lead to surface cracks and deflection of a concrete pavement. Degraded concrete pavement, when it is still under operation, should be recovered by an urgent maintenance to avoid the discontinued service leading to the significant traffic problems and economic loss. Seismic techniques are good tools to assess the structural integrity of concrete runway. It is because seismic techniques can evaluate engineering properties nondestructively and quickly and the evaluation can be extended to subgrade. In this study, a series of numerical simulations of stress-wave propagation were performed to verify feasibility of seismic techniques as an assessment tool. Based on the results of the numerical simulation, a framework of using seismic techniques was presented fur the nondestructive integrated assessment fur structural integrity of concrete runway. And the presented framework was applied to $\bigcirc\bigcirc$ concrete runway with surface cracks, which required urgent maintenance, to identify the causes of the surface cracks. The results obtained from the structural integrity assessment were compared with the measurements of the cores collected from the same runway for verification of the presented framework.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.125-125
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• 2018

충청남도는 2015년에 극심한 가뭄을 겪으며 보령댐은 역대 최저 저수율을 기록하고 128일간 제한급수를 시행한 바 있다. 가뭄은 농작물 피해, 인적 피해뿐 아니라 사회경제적인 피해 또한 야기하지만 강수량과 가용수자원양만을 고려하는 기존의 가뭄 위험 지수들은 물리적인 피해만 반영한다는 한계점을 갖는다. 본 연구는 이러한 한계점을 극복하기 위해 기존 가뭄 지수에 지역적 특성을 반영할 수 있는 사회경제적 인자와 가뭄 적응능력 인자들을 함께 반영하는 가뭄 위험 지수를 개발하는 것을 목적으로 한다. 위험을 산정하기 위해 International Panel on Climate Change(IPCC)는 재해, 노출, 취약성으로 구분하였고, Organisation for Economic Co-operation and Development(OECD)는 인과관계 구성의 체제를 강조하며 Pressure-State-Response(P-S-R) 프레임워크를 개발한 바 있으며, World Risk Index(WRI)는 노출과 취약성으로 산출하였다. 본 연구에서 개발된 가뭄 위험 지수는 P-S-R 체제의 인과관계 구조를 참고하여 재해(hazard), 노출(exposure), 적응능력(capacity)으로 구분하였다. 재해는 기상학적 가뭄을 평가하기 위한 요소로서 SPI 기법을 통해 산정되고 노출은 가뭄의 피해 대상을 의미하여 지역별 용수 수요량을 사용하였다. 적응능력은 가뭄 피해를 줄일 수 있는 지역적 특성을 나타내며 사회적 능력과 공학적 능력으로 구분하여 산정하였다. 사회적 능력은 개인의 재정능력, 공무원 수 등이 포함되며 공학적 능력은 댐 현황, 지하수 이용현황, 하천시설 현황이 포함된다. 본 연구 결과와 2015년 가뭄을 비교함으로써 개발된 가뭄 위험 지수의 적합성을 확인하였으며 이를 통해 지역별 취약성 평가를 할 수 있었다.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.524-540
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• 2019

We researched about the relationship among the Purpose of Assessment Certificate System, the preparation result, certificate, and, the performance of the assessment certificate on the purpose of the empirical analysis. For the testing of a research model, we tested 170 samples that our colleges tested by The Assessment Certificate System. As a result of the analysis; there are positive and causal effect relationships among the three variables. This study result will expansion and help to maintain performance growth in the college. In the future, the research about the improvement of management performance are needed.

• Review of KIISC
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• v.13 no.5
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• pp.1-15
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• 2003

IT(Information Technology) 제품의 보안 기능을 평가하기 위한 서로 다른 체계를 이용함으로써 평가를 위한 이중의 비용 소요와 추가의 시간 소모 등의 문제점을 해결하기 위하여, 미국, 영국 등의 선진국들은 국제간에 상호 인정이 가능한 공통평가기준(CC : Common Criteria)에 대한 연구를 활발히 수행하고 있고, CCRA(Common Criteria Recognition Agreement)에 가입한 나라에서 평가된 제품은 다른 나라에서 재평가 과정을 거치지 않고 상호 인정하는 CCRA 라는 평가를 위한 국제 조약을 체결하여 시행 중에 있다. 그러나 CC는 다양한 보안 제품에 대하여 시행되고 있고, 표준안의 분량이 매우 많을 뿐만 아니라 복잡하며, 개발자와 평가자, 그리고 이용자 모두가 평가를 위한 기술적, 관리적, 절차적 과정의 이해가 무엇보다도 중요하다. 따라서 CC 주요 주체에 대한 평가 교육의 필요성이 매우 중요하게 대두되고 있다. 또한 우리 나라도 국제공통평가기준 인정 협정인 CCRA로의 가입을 준비중에 있고, 다양한 제품으로 평가제도의 확대를 준비하고 있다. 본 논문에서는 각 나라의 CC 교육 과정을 분석하고, 현재 CC 체제하에서 평가된 정보보호 제품들의 특성을 분석하며, 이를 바탕으로 우리의 평가 교육 현실을 살펴본 후, 국내 CC 교육 프레임워크와 실천 방안을 제시한다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.2D
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• pp.175-184
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• 2011

Transport sector takes charge of about 20 percent of energy consumption and GHG(Green House Gas) emission in Korea. One of the efficient strategy of reducing GHG is introducing CDM(Clean Development Mechanism), which is one of GHG reduction systems in Kyoto Protocol. Nowadays many tries have done to regist transport policies as CDM in transport sector, however, a lot of things should be investigated to regist CDM in advance. The aim of this paper is assessment of CDM possibility in transport sector. First of all, we review steps and criteria to CDM registration, and select 4 CDM possibility assessment index in transport sector: as follows additionality, methodology, emission calculation, and monitoring. Also, we analyze registed projects and methodologies in transport sector. To assess CDM possibility in transport sector, quantitative and qualitative assessments are carried out in this study. 18 transport policies are categorized as 4 groups and possibility of 18 transport policies are examined. Several policies can reduce GHG, however, they are not fit to regist as a CDM. On the contrary many transport policies have possibility to regist. In addition, we have done questionnaire survey, 'fuel change' policies have high possibility to CDM. However transport policies related to haman activity, like as TOD, have lower possibility. As a result, we can find that enough CDM possibility assessment should be carried out before CDM registration in transport sector.

• Journal of the Korea Convergence Society
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• v.9 no.11
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• pp.245-252
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• 2018

With the emergence of lifelong learning society and the decrease in school-age population, structural changes of universities are lead to an adult-friendly university system reform. Since 2008, university-based lifelong education activation projects, such as the lifelong learning-centered university cultivation project and the lifelong learning college project have been accelerated as a university lifelong education system support project that integrated both projects in 2015. This study analyzed the present status of university lifelong education system support project management, according to four analysis frameworks; adult-friendly curriculum, adult learner support system, evaluation of diverse learning performances, and empowerment of adult learners, based on adults' learning desire for higher education in a lifelong learning society. University lifelong education system reform suggests to aim at promotion of empowered adult learners, who give themselves positions and roles, through cultural adaptation and integration between generations.

• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.54-72
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• 2022

This study is on the control system of simulation-based emergency preparedness 'government level exercise'(GOV-Ex), which provides main control elements required for each stage of planning, preparation, implementation, and follow-up measures and its operation concept. For this purpose, the control requirements of 'simulation-based government level exercise'(GOVSIM-Ex) was derived through the preceding studies on GOV-Ex and simulation exercise control in military exercise and disaster exercises and then the concept of operation was presented. The main contents are exercise planning and key event scenario, the linkage between simulation model and other models, the composition of the simulation control center and the organization's workstation(WS), DB, control and evaluation team etc. The study limited to the main control elements, not all the control elements required for the GOVSIM-Ex, and it has limitations that the specific implementation plan of some control elements proposed has not been presented. These are presented as a future research subject. The study will promote the development of the GOVSIM-Ex Control System and early settlement of GOSIMV-Ex in the future.

• Journal of Gifted/Talented Education
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• v.12 no.4
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• pp.72-107
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• 2002

In order to satisfy the gifted students' learning desire and maximize the effectiveness of their learning, we constructed the system which would provide them with supplementary activities based on the Internet boards. At the very beginning, we investigated the personalities of the gifted and their classroom environment which they prefer through studying the related references and asking questionnaires. And then we discussed how to improve the lectures, decided to make the basic structures of the web-based supporting system, and designed some teaching strategies for the gifted. which are named 'GIFTED'. Now the web-based supporting system, which are composed of several boards, was established and is being operated now. Each subject has its own boards. The boards of each subject basically consist of Notice, Learning-materials, Q&A, Homework, Recommended Sites. The results we've got from operating our system are following: Teachers and students were generally satisfied with the system while students wanted more materials. Students and teachers had a positive attitude that the site boards of Learning-materials and Homework are being actively used, while the numbers of contents uploaded in Q&A and Recommended site boards are small and they are regarded as being unimportant to the students and teachers.

• 한국정보교육학회:학술대회논문집
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• 2004.08a
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• pp.111-118
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• 2004

제7차 교육과정에서는 세계화 정보화, 다양화를 지향하는 교육체제의 변화이다. 이와 같은 변화에 맞추어 2001학년도부터 재량활동을 통해 ICT 교육을 1,2학년에 한하여 실시하고 2002학년도에는 3,4학년으로 2003년에는 5,6학년까지 그 범위를 확대하여 실시되고 있다. 정보통신기술교육은 지식평가나 능력위주의 평가대신에 실습위주로 이루어지며 컴퓨터를 바르게 이해하고 활용하도록 도와준다. 타 교과에서는 수행평가를 영역별로 실시하지만 정보통신기술교육에서는 영역별 수행평가를 실시하지 않고 전반적인 평가를 하고 있다. 컴퓨터교과도 수행평가를 실시하여야 바람직한 평가가 될 것으로 생각되어 현재 일선학교에서의 컴퓨터 평가실태를 분석하고 그 문제점을 제시해 본다. 정규교과로 되기 위해서는 컴퓨터영역별로 세분화 된 평가준거 및 문항 등이 평가의 밑바탕이 되어야 한다. 따라서 본 연구자는 교육현장에서의 초등 정보통신기술교육에 대한 효율적인 수행평가방안에 대하여 연구하고자 한다.