• 디지털융복합연구
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• 제19권6호
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• pp.61-71
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• 2021

코로나19로 인한 온라인 학습이 확대되고 있는 상황에서 기존 메이커 교육은 학교 수업 현장에 적용하기에 한계를 지닌다. 본 연구는 초등학교의 온라인 환경에서 교육용 인공지능 도구를 활용한 메이커 수업을 설계하는 목적을 지닌다. 또한, 이에 대한 반응 확인과 함께 학습자의 컴퓨팅 사고력, 창의적 문제해결력 향상에 도움이 되었는지를 살펴 보고자 하였다. 이를 위해 선행연구 검토와 교육과정의 재구성을 통해 수업을 설계하였다. 면담을 통한 교수자와 학습자 반응 확인, 대응 표본 t검증을 활용한 사전-사후 분석이 이루어졌다. 연구 결과, 초등 온라인 환경에서 교육용 인공지능 도구를 활용한 메이커 수업은 공감하기, 메이킹 문제 정의하기, 재료 및 도구 특성 파악하기, 리믹스를 활용한 알고리즘 설계 및 코딩하기 등을 포함한 총 10단계로 구성된다. 학습자의 컴퓨팅 사고력과 창의적 문제해결력에 대한 사전-사후 분석 결과, 통계적으로 유의미한 차이가 나타났다. 본 연구는 초등교육 맥락에서 교육용 인공지능 도구를 활용한 실제적인 메이커 활동이 온라인 환경에서도 실제적으로 적용 가능하다는 점을 확인한 의미를 지닌다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 춘계학술대회 논문집
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• pp.269-273
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• 1997

In order to maker unmanned machining systems with satisfactory performances, it is necessary to incorporate appropriate condition monitoring systems in the machining workstations to provide the required intelligence of the expert. This paper deals with condition monitoring for chatter, tool wear and fracture during turning operation. To develop economic sensing and identification methods for turning processes, sound pressure measurement and digital signal processing technique were proposed. We suppressed chatter by stability control methodology, which was studied through manipulation of spindle speeds regarding to chatter frequencies. It was shown that tool wear and fracture were identified and to be estimated by using the wear indices. The validity of the proposed system was confirmed through the large number of cutting tests.

• 한국인쇄학회지
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• 제28권2호
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• pp.117-128
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• 2010

Advancements in digital image have put high quality digital camera into the hands of many image professionals and consumers alike. High quality digital camera images consist originally of raw which have a set of color rendering operation applied to them to produce good images. With color rendering, the raw file was converted to Adobe RGB and sRGB color space. Also color rendering can incorporate factor such as white balance, contrast, saturation. Therefore, in this paper we conduct a study on production of optimum profile considered color rendering in digital camera. To do the experiment, the images were Digital ColorChecker SG target and ColorChecker DC target. A profiling tool was ProfileMaker 5.03. The results were analyzed by comparing in color gamut of $CIEL^*a^*b^*$ color space and calculating ${\Delta}E^*_{ab}$. Also results were analyzed in terms of different $CIEL^*a^*b^*$ color space quadrants based on lightness, chroma.

• International journal of advanced smart convergence
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• 제3권1호
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• pp.7-10
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• 2014

Upbringing requires an active intervention in the process of children growing up. Convergence in technology and media makes it possible to augment nurturing by making blended infrastructures with new digital resources available in learning environments at schools. A game-based provision of educationally-valuable content within a collective, virtual environment combined with an analysis of events in the game after it has been played (blended nurture environment) may help to better communicate human values especially where old-fashioned discussion methods fail or do not fulfill the promise of effective, educational institution-based methods of bringing up. This is where life sciences, psychology, media, pedagogy and technology (need to) converge.

• 한국인쇄학회지
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• 제26권2호
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• pp.65-77
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• 2008

The color reproduction of digital still camera does not, in general, match those of the final prints. Because color gamut of these devices is different, it is therefore necessary to take account of a way to match. The way uses the optimized profile to print an image. This paper proposed a way to create the input profile of digital still camera for standardization printing process. The results of proposed way showed that for input profiles equivalent, good results relatively. In this paper, an experiment was done where the illumination sources used as the standard illumination 5200K and illuminated at a $45^{\circ}$ angle in the best illumination efficiently. The white balance was in mode 'custom': aperture F11, exposure time 1/60s, ISO50, focal length 80mm. The images were exported and saved as 16bit RGB tiff(AdobeRGB, sRGB, ProphotoRGB) images. To do the test, the RGB values of the RGB tiff images are processed through the ICC input profile to arrive at processed $CIEL^*a^*b^*$ values. A profiling tool such as ProfileMaker 5.0 and Monacoprofile 4.8 are used to do this. The processed CIEL*a*b* values are compared to the reference CIEL*a*b* values and these two values are used to calculate a ${\Delta}E$.

• 한국인쇄학회지
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• 제27권1호
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• pp.1-14
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• 2009

The color reproduction of digital still camera does not, in general, match those of the final output device. Because color gamut of these devices is different, it is therefore necessary to take account of a way to match. The way uses the optimized profile to output device an image. This paper proposed a way to create the input profile of digital still camera for standardization soft proofing process. The results of proposed way showed that for input profiles equivalent, good results relatively. In this paper, an experiment was done where the illumination sources used as the standard illumination 5200K and illuminated at a $45^{\circ}$ angle in the best illumination efficiently. The white balance was in mode 'custom' : aperture F11, exposure time 1/60s, ISO50, focal length 80mm. The images were exported and saved as 16bit RGB TIFF(AdobeRGB, sRGB, ProphotoRGB) images. To do the test, the RGB values of the RGB TIFF images are processed through the ICC input profile to arrive at processed $CIEL^*a^*b^*$ values. A profiling tool such as ProfileMaker 5.0 and Monacoprofile 4.8 are used to do this. The processed $CIEL^*a^*b^*$ values are compared to the reference $CIEL^*a^*b^*$ values and these two values are used to calculate a ${\Delta}E{^*}_{ab}$.

• 한국콘텐츠학회논문지
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• 제13권5호
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• pp.146-158
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• 2013

본 연구는 태블릿 pc 기반 유아용 어플리케이션 중 이야기 창작을 주로 지원하는 콘텐츠의 스토리-리텔링 구조를 분석하는데 그 목적이 있다. 과거 단순히 콘텐츠의 수동적 소비자로 존재했던 유아도, 유아용 서사 창작 어플리케이션을 통해서, 소비한 이야기의 구조를 토대로 자신만의 이야기를 창조적으로 재구성 및 리텔링하는 생산자로 변화해가는 중이다. 기존과 달리 주체적으로 이야기 창작에 참여하고 그 결과물을 도출하는 과정을 통해서 유아는 이야기 텍스트의 의미 지평을 확장하는 유의미한 경험을 하게 된다. 이처럼 스토리-리텔링은 유아의 창의성과 표현력, 리터러시 능력을 배양하는 측면에 있어서 적합한 방법론이다. 이에 본 논문에서는 다양한 유아용 서사창작 어플리케이션을 양상별로 유형화하고, 그 중에서 각 유형을 대표할 만한 , , 를 통해서 스토리-리텔링의 구성요소 및 구성방식을 통합적 관점에서 조망한다. '창조적인 틈'을 제공하는 스토리-리텔링 어플리케이션은 유아로 하여금 스스로 빈 칸을 채우게 하고 그 과정을 통해서 상상력을 발휘하는 동시에 이야기의 법칙성을 깨닫게 한다는 점에서 교육적으로 유의미하며, 나아가 차세대 어플리케이션의 발전 방향을 제시한다.