• Elastomers and Composites
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• v.47 no.3
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• pp.238-245
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• 2012

Graphene oxide was synthesized from natural graphite, and its surface was modified using diisocyanatodicyclohexylmethane( $H_{12}MDI$). Isocyanate-graphene sheet(i-RGO) was obtained by reduction of surface modified GO. To select nanofiller having good dispersion with polyurethane, GO, i-RGO, natural graphite and thermal reduced graphite were analyzed, and then i-RGO was selected as a suitable nanofiller. PU/i-RGO nanocomposite was synthesized with various i-RGO contents to estimate effect of reinforcement on nanocomposite. Thermal stability, hardness, contact angle were increased with i-RGO contents due to i-RGO characteristic and crosslink bridge effect. But, tensile strength and elongation were decreased at i-RGO contents more than the 4 wt%. This phenomenon was interpreted by the excess formation of crosslink bridge.

• Proceedings of the Optical Society of Korea Conference
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• 2009.02a
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• pp.479-480
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• 2009

• Proceedings of the Korean Environmental Sciences Society Conference
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• 1997.10a
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• pp.133-135
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• 1997

• Proceedings of the Optical Society of Korea Conference
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• 2009.10a
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• pp.280-281
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• 2009

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2005.05a
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• pp.163-167
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• 2005

• Journal of KIISE:Software and Applications
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• v.32 no.5
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• pp.346-356
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• 2005

Over the past decade, several types of design pattern have been defined in the software engineering area. But these patterns have not been used so often compared with data structure and algorithm. Likewise, methods to select and apply design patterns during analysis, design, and development are not mentioned in CBD methodologies such as CBD96, RUP, and MaRMI III. This paper suggests the process of effectively selecting design patterns which can be applied to analysis, design, and development for development of application software with based on those offered by GoF and J2EE pattern catalogs. It also demonstrates how to effectively pattern-based software and shows differences and relative advantages from RUP by applying the suggested process to the development of aviation job application.

• ICROS
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• v.18 no.3
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• pp.37-42
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• 2012

이번 편에서는 첫 번째 편에서 소개된 블랙박스 모델을 결정하는 기법 중의 하나인 매개변수 시스템 식별법을 소개한다. 이 기법은 식별하고자 하는 대상 시스템에 대하여 매개변수들로 표현되는 여러 가지 후보 모델들을 선정한 후 확정된 입출력 데이터와 추정 알고리즘을 적용하고 여러 가지 검증과정을 통하여 실제 시스템의 데이터에 가장 가까운 특성을 보이는 모델을 선정하는 방법이다. 이를 위해서 본 편에서는 선형-시불변 시스템의 블랙박스 식별에서 종종 사용되는 여러 가지 모델구조들을 소개한다.

• Information and Communications Magazine
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• v.34 no.1
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• pp.25-33
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• 2016

TTA는 국제표준화 환경변화에 적극 대응하고 국내기술의 국제표준 반영을 통한 글로벌 표준화 경쟁력을 제고를 위해 매년 중점기술을 선정하여 국내외 표준화 추진전략을 제시하는 K-ICT 표준화 전략맵을 개발하였으며, 이를 토대로 전문가 설문과 인터뷰를 진행하여 '2017년 ICT 표준화 10대 이슈'를 선정하였다. 본 고에서는 제4차 산업혁명을 이끌 초연결사회 플랫폼과 지능형 융합서비스 분야에서 선제적 표준화가 필요한 전략분야의 국내외 표준화 전망에 대해 소개하고자 한다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.5
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• pp.827-831
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• 2004

This study was carried out to investigate the supplementary effects of ${\gamma}$-oryzanol on the blood glucose level in diabetic mice. We supplied 2 experimental diets (CO without and GO with 0.2% ${\gamma}$-oryzanol) to diabetic mice for 8 weeks. Diet intake, body weight and levels of blood glucose, hemoglobin $A_{lc}$ and insulin were measured. Though there was no significant difference in diet intake between experimental groups, the concentration of fasting blood glucose and blood glucose area from glucose tolerance test in diabetic mice was lower in GO group than CO group during the supplementary period of experimental diets. Hemoglobin Ai, was lower and serum insulin level was higher in GO group than CO group without significance. These results suggest that r-oryzanol decrease the blood glucose level, and ${\gamma}$ -oryzanol produced from residual product of rice may be developed with high value.

• Digital Contents
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• no.2 s.141
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• pp.70-71
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• 2005

한국데이터베이스진흥센터는‘지식정보자원관리사업’을 통해 구축된 지식정보 DB의 품질을 점검해 보기 위해, 2005년도 1월부 터 매월 1종의 DB를 선정해 품질을 평가하고, 그 결과를‘DB 서비스 평가’기획 시리즈로 연재하고 있다. 이번 달에는 그 두 번째로 문화재청에서 운영하고 있는「국가문화유산종합정보서비스(www.heritage.go.kr)」를 대상으로 평가를 실시했다.