• 한국과학교육학회지
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• 제19권1호
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• pp.159-172
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• 1999

본 연구는 '97년에 수행된 "공통과학 국가공통 절대평가 기준 개발 연구"의 후속 연구로서 국가 교육 과정에 근거한 고등학교 공통과학의 평가 기준 및 도구를 개발하였다. 기준 개발의 각 과정에서 과학교육 전공 교수, 고등학교 교사 교육부 관계관들과 협의회, 워크샵, 집중작업 등을 통해 의견을 수렴하고, 합의된 안을 도출하였으며, 구체적인 과정은 다음과 같다. -성취기준 검토 및 수정: 선행 연구에서 개발된 성취기준을 현장 교사 대학 교수, 교육부 관계관 등의 검토 의견을 반영하여 수정하였다. -평가기준 개발: 공통과학의 37개 중영역에 대하여 학생들의 성취 정도를 상/중/하로 판단할 수 있는 준거를 개발하였다. 평가도구 개발, 각 중단원의 성취 정도를 평가할 수 있는 도구를 중단원별로 2조 이상 개발하였다. 선택형이나 단답형 평가도구 보다는 타당도를 중시한 수행평가(서술형, 관찰, 보고서, 포트폴리오 평가 등) 위주로 개발하였다.

• 한국도서관정보학회지
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• 제25권
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• pp.51-82
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• 1996

This study compare and analyzes recent school library standards in advanced countries including Britain, United States and Japan. The examination is based on the changing process of standards and development of school library in the each countries. To Suggest the model of reasonable standard for the activation of school library in Korea, the study has identified the common elements ; staff, material, environments, management and cooperative system, and learning skill with curriculum of school library standards showed in the each of advanced countries.

• KEPCO Journal on Electric Power and Energy
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• 제2권2호
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• pp.233-244
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• 2016

Smart grid is called it as a system of systems. There are diverse types of systems in smart grid environment. Therefore, one of key factors to achieve smart grid successfully is interoperability among diverse systems. To secure interoperability, smart grid operating system should be developed complied with standards in terms of the data representation and communication. Common Information Model (CIM) and OLE Process for Control - Unified Architecture (OPC-UA) are the representative international standards in smart grid domain. Each standard defines data representation and communication by providing common information model and the unified architecture. In this paper, we explain a smart grid platform that we have developed to comply with CIM and OPC-UA standards for secure interoperability among numerous legacy systems.

• 대한공간정보학회지
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• 제3권2호
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• pp.83-90
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• 1995

국가지리정보체계의 표준화는 정보의 공동활용 및 상호운용성의 확보 등을 이유로 중요한 존재로 부과되고 있다. 이의 표준화는 현재 구체적으로 추진되고 있는 현재 국제적으로 추진되고 있는 OSE/RM을 참조하여 발전할 수 있으며 이의 구조에 맞는 국가 표준의 제정이 요구된다. 현재 추진하고 있는 국가지리정보체계 표준화는 국가 기본도 표준화와 공통데이터교환포맷 표준화가 있으며 국가 기본도 표준화에서는 지형지물 코드 및 속성 부분데이타 모델링 등을 추진하고 있고 공통데이터교환포맷 표준화에서는 국외표준의 국내수용으로 그 기본 방향을 유지하고 있다.

• 영어어문교육
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• 제15권2호
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• pp.71-92
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• 2009

Europass was established in 2005 by the European Parliament and the Council of Europe as a single framework for language qualifications and competences, helping citizens to gain accreditation throughout the European Community. In addition, the 1996 Common European Framework of Reference for Languages: Learning, Teaching, Assessment (CEFR) provides a common basis for language syllabi, curriculum guidelines, examination, and textbooks in Europe. This framework describes the required knowledge and skills, the cultural context, and the levels of proficiency that learners should achieve. In combination, Europass and the CEFR provide employers and educational institutes with internationally recognized standards. This paper proposes that current trends such as globalization and international mobility require a similar approach to accreditation in Asia. As jobs and workers become independent of national boundaries and restrictions, it becomes necessary to educate students as multilingual world citizens, using standards that are accepted around the world. It is suggested, therefore, that assessment models such as Europass and the CEFR, along with successful language teaching models in Europe and Canada, present opportunities of adaptation for the Korean education system. Finally, rigorous teacher training to internationally recognized levels is recommended, if Korea is to produce a workforce of highly-skilled, plurilingual world citizens.

• 전력전자학회논문지
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• 제28권1호
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• pp.1-7
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• 2023

A grid-connected 3-level NPC inverter is a power conversion device that connects renewable energy generators, such as photovoltaic or wind turbines to the grid. Although many studies have focused on this inverter, commercializing it requires strictly satisfying various safety and power quality-related standards. Among many standards, leakage current and grid current total harmonic distortion(THD) can be affected by external factors such as installation environment, aging, and grid conditions. Hence, inverter operations that can satisfy these standards need to be explored. In this study a 3-level NPC inverter operation algorithm using the Phase Opposition Disposition-PWM method that can effectively reduce leakage current and switching frequency adjustment to reduce THD effectively has been proposed.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 하계종합학술발표회논문초록집
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• pp.177-177
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• 2004

• 분석과학
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• 제18권6호
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• pp.475-482
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• 2005

화학분석 분야에는 ISO 17025에 따른 체계적 품질 관리/보증의 요구가 커지면서, 측정 불확도의 표기가 크게 요구되고 있다. 측정품질의 정량화를 위하여, 화학분석의 QA/QC 문헌들로부터 화학분석 품질에 영향을 미치는 중요한 불확도 요소를 선정하였고, 이것을 측정결과 평가 요소의 기본인 7개의 품질요소로서 반복성, 직선성, 소급성, 변동성, 매질효과, 균질성, 안정성으로 구분하였다. 화학분석의 QA/QC를 위한 이 7대 품질 요소의 측정 모델화, 표준불확도의 계산 및 합성방법을 각각 예로서 제시하였다.

• Journal of Positioning, Navigation, and Timing
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• 제12권3호
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• pp.245-255
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• 2023

Time comparison techniques are necessary for generating and keeping Coordinated Universal Time (UTC) and distributing standard time clocks. Global Navigation Satellite System (GNSS) Common View, GNSS All-in-View, Two-Way Satellite Time and Frequency Transfer (TWSTFT), Very Long Baseline Interferometry (VLBI), optical fiber, and Network Time Protocol (NTP) based methods have been used for time comparison. In these methods, GNSS based time comparison techniques are widely used for time synchronization in critical national infrastructures and in common areas of application such as finance, military, and wireless communication. However, GNSS-based time comparison techniques are vulnerable to jamming or interference environments and it is difficult to respond to GNSS signal disconnection according to the international situation. In response, in this paper, Code-Division Multiple Access (CDMA) based All-to-All TWSTFT operation method is proposed. A software-based simulation platform also was designed for performance analysis in multi-TWSTFT signal environments. Furthermore, code and carrier measurement jitters were calculated in multi-signal environments using the designed simulation platform. By using the technique proposed in this paper, it is anticipated that the TWSTFT-based time comparison method will be used in various fields and satisfy high-performance requirements such as those of a GNSS master station and power plant network reference station.