• 공학교육연구
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• 제12권4호
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• pp.46-55
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• 2009

본 연구에서는 성인지적 관점을 도입하여 개발?운영되는 WIE사업을 통한 여학생들의 심리적 특성에 미치는 영향을 분석하여 공과대학 여학생들에게 전공분야로 진출하는데 필요한 특성을 고취시키고 여성공학인력 활용을 개선시키는 계기를 마련하고자 하였다. 공대 여학생들 207명을 대상으로 전공분야 진출 관련 심리적 특성과 프로그램을 통한 자기능력 향상에 대한 인식을 조사하였다. 연구 결과 첫째, 공대 여학생들의 전공관련 심리적 특성은 전공분야 진출 의욕, 경력에 대한 열망은 3.5점을 상회하고 있었고 취업관련 자기효능감은 두 특성에 비해 낮은 경향을 보였으며, 학생의 일반적 특성에 따른 심리적 특성에 유의한 차이를 보였다. 둘째, 프로그램 참여에 따른 전공분야 진출관련 심리적 특성을 살펴본 결과 참여경험이 있는 집단이 그렇지 않은 집단 보다, 경험이 높은집단의 경우 중간집단에 비해 전공분야 진출 관련 심리적 특성이 매우 유의한 차이를 보였다. 셋째, 프로그램 참여를 통해 습득된 자기능력을 공대 여학생들은 어떻게 인식하고 있는지 살펴본 결과 적극성, 자신감, 도전정신 등 선행연구들로부터 남학생에 비해 상대적으로 부족한 것으로 나타난 심리적 특성들이 프로그램을 통해 향상되었다고 인식하고 있어 프로그램별 기대효과 이상의 결과를 보였다.

• Journal of Multimedia Information System
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• 제4권4호
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• pp.285-288
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• 2017

In this paper, we propose a vision-based object detection and tracking system using online learning. The proposed system adopts a feature point-based method for tracking a series of inter-frame movement of a newly detected object, to estimate rapidly and toughness. At the same time, it trains the detector for the object being tracked online. Temporarily using the result of the failure detector to the object, it initializes the tracker back tracks to enable the robust tracking. In particular, it reduced the processing time by improving the method of updating the appearance models of the objects to increase the tracking performance of the system. Using a data set obtained in a variety of settings, we evaluate the performance of the proposed system in terms of processing time.

• 공학교육연구
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• 제23권5호
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• pp.26-39
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• 2020

The purpose of this study was to compare and analyze the employment rate of engineering graduates in the last eight years (2011-2018) by gender and majors. Using the statistical yearbook for employment of higher education graduates provided by the Korea Educational Development Institute (KEDI), the employment rate and retained employment rate of engineering graduates were investigated. As results, first, the employment rate has been decreasing since 2011, and the gender employment rate gap has not narrowed and women have always been lower than men. Second, most of the engineering graduates were workers with employee health insurance. On the other hand, women were higher than men in works with self-employee health insurance. Third, from 2016 to 2018, the retained employment rate of engineering graduates was similar, and as the survey progressed, the retained employment rate decreased. In particular, women had lower retained employment rate than men. The study is meaningful in that it suggested ways to bridge the gap between gender and majors employment rates of engineering graduates.

• 한국분말재료학회지
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• 제28권1호
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• pp.44-50
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• 2021

Zinc selenide (ZnSe) nanoparticles were synthesized in aqueous solution using glutathione (GSH) as a ligand. The influence of the ligand content, reaction temperature, and hydroxyl ion concentration (pH) on the fabrication of the ZnSe particles was investigated. The optical properties of the synthesized ZnSe particles were characterized using various analytical techniques. The nanoparticles absorbed UV-vis light in the range of 350-400 nm, which is shorter than the absorption wavelength of bulk ZnSe particles (460 nm). The lowest ligand concentration for achieving good light absorption and emission properties was 0.6 mmol. The reaction temperature had an impact on the emission properties; photoluminescence spectroscopic analysis showed that the photo-discharge characteristics were greatly enhanced at high temperatures. These discharge characteristics were also affected by the hydroxyl ion concentration in solution; at pH 13, sound emission characteristics were observed, even at a low temperature of 25℃. The manufactured nanoparticles showed excellent light absorption and emission properties, suggesting the possibility of fabricating ZnSe QDs in aqueous solutions at low temperatures.

• 한국멀티미디어학회논문지
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• 제23권12호
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• pp.1552-1564
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• 2020

As various styles of fonts were used, there were problems such as output errors due to uninstalled fonts and difficulty in font recognition. To solve these problems, research on font recognition and recommendation were actively conducted. However, Hangul font research remains at the basic level. Therefore, in order to automate the comparison on Hangul font similarity in the future, we analyze the influence of each stroke element property. First, we select seven representative properties based on Hangul stroke shape elements. Second, we design a calculation model to compare similarity between fonts. Third, we analyze the effect of each stroke element through the cosine similarity between the user's evaluation and the results of the model. As a result, there was no significant difference in the individual effect of each representative property. Also, the more accurate similarity comparison was possible when many representative properties were used.

• 공학교육연구
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• 제12권3호
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• pp.79-95
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• 2009

국내 여성공학 프로그램의 확산을 위하여 미국, 유럽, 호주의 프로그램을 분석하였다. 이들 국가에서는 이미 1970년대부터 공학 분야의 낮은 여성의 참여율에 주목하고, 이를 개선하기 위한 많은 연구와 프로그램이 수행되었다. 연구들은 여성의 참여율이 저조한 원인으로 K-12 단계에서 수학과 과학의 기피, 교육과정에서 여성을 다르게 취급하는 "차가운 교육환경 (chilly climate)", 그리고 공학계의 남성 중심의 문화 등을 지목하고 있다. 프로그램 측면에서는 여성과 교육시스템에 대해 종합적인 접근법을 사용하여 각 단계 학교와 대학뿐만 아니라 다양한 지역단체를 활용하여 초등학생부터 대학원생, 그리고 학부모, 교사, 교수, 교육 행정가들을 위한 프로그램이 시행되고 있다. 이러한 프로그램의 국내 도입을 위해서는 국내 공학전공 여학생이 처한 환경에 대한 실태 파악이 우선되어야 하며, 범 국가전인 정책과 재정 지원을 바탕으로 공학계 전체가 교육 제도, 환경, 문화를 바꾸어 가야 한다.

• Bulletin of the Korean Chemical Society
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• 제30권4호
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• pp.781-782
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• 2009

• 디지털콘텐츠학회 논문지
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• 제18권7호
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• pp.1323-1331
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• 2017

오늘날 저작권 관련 산업이 사회, 경제적으로 큰 영향을 미치는 대규모 산업으로 성장하였음에도 불구하고 저작물에 대한 소유권 및 저작권에 대한 문제가 끊임없이 발생하고 있으며 특히 이미지 저작권과 관련된 연구는 거의 진행되지 않는 상태이다. 본 연구에서는 기존의 문서 영상처리 기술과 딥 러닝 기술을 융합하여 교육용 도서 영상에서의 객체 자동 추출 및 분류 기술 시스템을 제안한다. 제안된 기술은 먼저 잡음을 제거한 후, 시각적 주의(visual attention) 기반 영역 추출 과정을 수행한다. 추출된 영역을 기반으로 블록화 작업을 수행하고, 각 블록을 그림인지 아니면 문자 영역인지를 분류한다. 마지막으로 추출된 그림 영역 주위를 검색하여 캡션 영역을 추출한다. 본 연구에서 진행한 성능 평가 결과, 그림 영역은 최대 97% 정확도를 보이며, 그림 및 캡션 영역 추출에 있어서는 평균 83%의 정확도를 보여 준다.

• 한국멀티미디어학회논문지
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• 제23권8호
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• pp.953-964
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• 2020

Ever since media contents took over the world, the importance of typography has increased, and the influence of fonts has be n recognized. Nevertheless, the current Hangul font system is very poor and is provided passively, so it is practically impossible to understand and utilize all the shape characteristics of more than six thousand Hangul fonts. In this paper, the characteristics of Hangul font shapes were selected based on the Hangul structure of similar fonts. The stroke element detection training was performed by fine tuning Faster R-CNN Inception v2, one of the deep learning object detection models. We also propose a system that automatically extracts the stroke element characteristics from characters by introducing an automatic extraction algorithm. In comparison to the previous research which showed poor accuracy while using SVM(Support Vector Machine) and Sliding Window Algorithm, the proposed system in this paper has shown the result of 10 % accuracy to properly detect and extract stroke elements from various fonts. In conclusion, if the stroke element characteristics based on the Hangul structural information extracted through the system are used for similar classification, problems such as copyright will be solved in an era when typography's competitiveness becomes stronger, and an automated process will be provided to users for more convenience.

• 한국분말재료학회지
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• 제27권3호
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• pp.233-240
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• 2020

Nano-sized ZnSe particles are successfully synthesized in an aqueous solution at room temperature using sodium borohydride (NaBH₄) and thioglycolic acid (TGA) as the reducing agent and stabilizer, respectively. The effects of the mass ratio of the reducing agent to Se, stabilizer concentration, and stirring time on the synthesis of the ZnSe nanoparticles are evaluated. The light absorption/emission properties of the synthesized nanoparticles are characterized using ultraviolet-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy, and particle size analyzer (PSA) techniques. At least one mass ratio (NaBH4/Se) of the reducing agent should be added to produce ZnSe nanoparticles finer than 10 nm and to absorb UV-vis light shorter than the ZnSe bulk absorption wavelength of 460 nm. As the ratio of the reducing agent increases, the absorption wavelengths in the UV-vis curves are blue-shifted. Stirring in the atmosphere acts as a deterrent to the reduction reaction and formation of nanoparticles, but if not stirred in the atmosphere, the result is on par with synthesis in a nitrogen atmosphere. The stabilizer, TGA, has an impact on the Zn precursor synthesis. The fabricated nanoparticles exhibit excellent photo-absorption/discharge characteristics, suggesting that ZnSe nanoparticles can be alloyed without the need for organic solutions or high-temperature environments.