• Journal of The Korean Association For Science Education
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• v.36 no.5
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• pp.717-727
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• 2016

Using TIMSS survey data, we analyzed whether there were any significant changes in the learning environment of middle school science classes over the last 10 years. Our study selected questions from teachers and school principals' questionnaires and divided them by category: science class, teacher professional development, and school environment. The science class components were subdivided into three categories: science learning activities, evaluation, and homework. Within teacher professional development, the sub-categories included teacher training, collaboration to improve teaching, and teacher evaluation. School environment subdivided into two aspects, these being school characteristics and school system. Our research confirmed that there has been a positive change overall in learning environments. However, most classes are teacher-conducted and also teacher-oriented; the proportion of science investigation activities has declined compared against the prior ten years. Our study show that students do not engage in a range of inquiry-related activities. The questions on tests and examinations involve mostly knowledge application and understanding, although recent methods of evaluation show improvement. As for the science teachers, they participate in many professional development programs but focus on science content, science curriculum, and pedagogy. In addition, teachers do not have many opportunities to participate in the training to integrate information technology into science, science assessment, or improving students' critical thinking or inquiry skills. The teachers are satisfied with their profession, and the shortage of science resources does not seem to affect instruction.

• Journal of The Korean Association For Science Education
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• v.37 no.4
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• pp.539-552
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• 2017

The purpose of this study is to investigate the trends of model and modeling-related research in science education from 1989 to 2016 in Korea. Eighty-five (85) models and modeling-related journal articles were extracted from the KCI-listed journals and analyzed according to the criteria such as participants, research fields, research design, methods, data collection and elements of metamodeling knowledge. According to research participants, three out of four (3/4) were studied for students and the rest were for teachers. More than half of the studies for students were conducted with middle and high school students. The research fields of models and modeling-related researches in science education were comprised of earth science, chemistry, biology science, physics and science course. With regards to research design, the highest type is qualitative research and followed by hybrid research and quantitative research. According to research methods, the most numerous researches that were analyzed was the effectiveness of program, which was a developed model and modeling-related research. The analysis from the elements of the metamodeling knowledge showed most of model and modeling-related research utilized for the change of scientific concept or understanding.

• Journal of Science and Technology Studies
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• v.19 no.3
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• pp.167-200
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• 2019

In recent years, the material has mattered to the humanities and social sciences in the West and feminism is no exception. It is a notable change that feminist analyses, which had previously shown critiques against science and technology, attempted to build new engagements with matter. STS (science and technology studies) has also accumulated scholarships and developed conceptual tools on the thing or the existence itself through "the ontological turn." The objective of this paper is not to introduce new materialism or new material feminism in full, but to reveal the possibility and potential of doing science, technology and women studies by selectively relying on the achievement of new materialism feminism. This article shows a way to study women's practice of science and technology by analyzing the case of plastic surgery practices through the ontological concepts of STS, particularly those of Annemarie Mol, Karen Barad, and Charis Thompson, and proposes a new engagement among new materialism, feminism, and STS. This article is organized as follows. First of all, after briefly discussing main issues in new material feminism, I will show the limitations of previous feminist studies of plastic surgery under the light of new material feminism. The rest of the article introduces the conceptual tools of ontological STS, describes plastic surgery practices with those tools, and finally provides their feminist implications.

• Journal of the Korean Society of Earth Science Education
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• v.15 no.2
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• pp.132-141
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• 2022

The purpose of this study is to investigate the effect of science classes using elementary school distance science classes on science academic achievement and creative personality. The research group and non-research group were selected for 6th grade elementary school students. After 10 weeks of experimental treatment, science classes were conducted with the contents of the elementary school science section, 'Changes of the seasons'. In the three domains of 'knowledge', 'inquiry', and 'attitude', which are sub-domains of science academic achievement, as a result of the pre-post test, there was a positive effect in 'inquiry' and 'attitude', which are sub-domains of science academic achievement. However, it was found that there was no positive effect in 'knowledge', a sub-domain of academic achievement. However, it was found that there was a positive effect in the overall test result of academic achievement. Therefore, it is interpreted that science classes using elementary school distance science classes had an effect on academic achievement. There was a significant effect in the sub-domains of the creative personality test, 'persistence/obsession', 'self-confidence', 'humor', 'imagination', 'openness', 'adventure', and 'independence'. However, it was found that there was no effect in the sub-domain 'curiosity'. The overall test results of the creative personality test showed a significant effect. Therefore, it is interpreted that science classes using elementary school distance science classes are effective in cultivating creative personality. Students' perceptions of science classes using elementary school distance science classes also showed positive responses.

• Korean Journal of Poultry Science
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• v.50 no.1
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• pp.51-61
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• 2023

This study was designed to evaluate the effects of feral peach (Prunus persica Batsch var. davidiana Max.) sugar extracts (peach extracts) and Gomchwi (Ligularia fischeri) extracts on physicochemical properties of Woorimatdag 1breast marinated with red pepper sauce during cold storage for 18 days. Experimental groups were divided into five groups; CON: marinated breast with basic red pepper sauce, GP15 and GP30: added with 15% and 30% of peach extracts into CON, respectively, GG5 and GG10: added with 5% and 10% of Gomchwi extracts into CON, respectively. Moisture and fat contents of GP30 were lower than those of CON, GG5, and GG10 (P<0.05). Cholesterol content of GP15 was similar to that of CON, while it was lower than the other treatments. GP15 and GP30 showed significantly lower pH than the others. Especially, GP30 showed significantly lower total aerobic bacteria count than other treatment on day 10. During storage, peach and Gomchwi extracts were not significantly effect on meat shear force. Overall acceptability of GP15 was higher than that of GG10 at day 10 and 15 (P<0.05). These results indicated that the treatment of peach extracts has a tendency to improve the storage stability maintaining the sensory preference of marinated Woorimatdag 1 breast compared to Gomchwi extracts. Further study would be needed to identify the specific flavor-enhancing factors of GP treatments.

• The Journal of the Society of Stroke on Korean Medicine
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• v.13 no.1
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• pp.43-51
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• 2012

Object : The purpose of this study was to evaluate the relationship between pattern identification (PI) and stroke risk factors, such as hypertension, diabetes mellitus, dyslipidemia, stroke history, obesity, abdominal obesity and metabolic syndrome. Methods : 46 patients with acute ischemic stroke were recruited from May 2012 to November, 2012. We analyzed the data of 32 patients, and pattern identification was identified by resident and specialist of Korean medicine. We analized patient's PI and risk factor by Fisher's exact test. Results : We found that Dampness-phlegm group was more related with patient's metabolic syndrome than non Dampness-Phlegm group. And Yin deficiency group had less relationship with patient's metabolic syndrome, obesity, abdominal obesity and dyslipidemia than non Yin deficiency group. Conclusions : According to the analysis, these results provide evidence for relationship between the Dampness-phlegm group, Yin deficiency and metabolic syndrome.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.157-159
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• 2005

한국과학기술정보연구원은 국가 과학기술 지식정보인프라의 중심기관이자 과학기술종합정보센터로서 논문, 특허, 연구보고서, 사실정보, 생물다양성정보 등을 비롯한 다양한 종류의 과학기술관련 데이터베이스를 구축, 수집 및 서비스 하고 있다. 그러나 이러한 정보들은 약 40여개의 웹사이트에 분산되어 서비스되고 있어, 하나의 서비스 접점에서 다양한 정보를 쉽고 편리하게 얻고자 하는 이용자들의 요구를 만족시키지 못하고 있다. 따라서 본 논문에서는 분산 서비스되고 있는 대용량의 이기종 과학기술관련 데이터베이스를 각 데이터베이스의 특성을 고려하여 효과적으로 통합검색 될 수 있도록 하는 통합검색 데이터베이스 구축시스템을 설계한다. 본 논문의 통합검색시스템은 KISTI에서 자체 개발한 정보검색관리시스템인 KRISTAL-2002를 사용한다.

• The Science & Technology
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• no.8 s.447
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• pp.14-17
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• 2006

서울대 58년 역사상 첫여성 처장으로 임명됐던 노정혜 연구처장(생명과학부 교수)이 7월말로 2년간의 임기를 끝냈다. 노 처장은 지난해 우리 사회를 혼란스럽게 했던 황우석 박사의 줄기세포 논문조작 사건을 맡아 진실 규명에 중요한 일을 해낸 것으로 평가받고 있다. 당시 노 처장은 전국민을 대상으로 한 방송 생중계에서 차분한 어조와 절제된 표현, 힘 있는 발언으로 강한 인상을 남겼다. 또 서울대 자연대 수석 졸업, 20대 서울대 여교수 임용, 강금실(전법무부 장관), 김영란(대법관)과 고교 동기 등의 사실이 알려지면서 노 연구처장에 대한 개인적인 호기심을 불러일으키기도 했다. 정운찬 서울대 23대 총장의 이임식이 열리던 지난 7월 19일, 서울대 본부의 연구처장실에서 그를 만났다. 그는“과학자가 행정업무에 적합하지 않다는 것은 선입견일 뿐”이라며“과학자는 합리성을 갖고 있기 때문에 오히려 더 잘할 수 있다”고 밝혔다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.82-82
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• 2019

해상에서 긴급상황 발생 시 선박운항자는 짧은 시간에 신속 정확한 의사 결정을 할 필요가 있다. 이를 위해서 해양사고(충돌, 좌초, 화재, 엔진고장, 조타고장) 심각성에 따른 대피항로(해경선, 비상투묘, 표류, 임의좌주, 주변선박) 선정 알고리즘을 설계하였고, 선박운항자를 위한 긴급대피지원안내 시스템을 개발 중에 있다. 본 연구에서는 대피항로 선정 지원 기술 중 비상투묘와 충돌위험도를 중심으로 시스템 적용 모델의 타당성의 평가하고 알고리즘의 신뢰성을 검증하였다. 비상투묘 지원 기술의 검증을 위해 국내외 해양사고 보고서 및 재결서를 분석하고 알고리즘에 적용해 결과를 비교하였다. 충돌위험도를 검증하기 위해 재결서의 선박 충돌 사고 사례를 시뮬레이션으로 재현하였고, 시뮬레이션 기록 데이터를 기반으로 PARK model, IWRAP MK2 프로그램을 이용해 충돌위험도를 평가하였다. 본 연구의 결과를 통해 해양사고 발생 시 선박과 인명 피해를 최소화할 수 있을 것으로 예상된다.

• Review of KIISC
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• v.32 no.4
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• pp.61-69
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• 2022

C/C++에는 다수의 메모리 취약점이 존재하며 ASan은 낮은 오버헤드와 높은 탐지율로 이러한 메모리 취약점을 탐지하기 위해 광범위하게 사용되고 있다. 그러나 상용 프로그램 중 다수는 메모리를 효율적으로 사용하기 위해 Custom Memory Allocator(CMA)를 구현하여 사용하며, ASan은 이러한 CMA로부터 파생된 버그를 대부분 탐지하지 못한다. 이를 극복하기 위해 본 연구에서는 LLVM IR 코드를 RNN 신경망에 학습하여 CMA를 탐지하고, ASan이 CMA를 식별할 수 있도록 수정하여 CMA로부터 파생된 메모리 취약점을 탐지할 수 있는 도구인 CMASan을 제안한다. ASan과 CMASan의 성능 및 CMA 관련 취약점의 탐지 결과를 비교·분석하여 CMASan이 낮은 실행시간 및 적은 메모리 오버헤드로 ASan이 탐지하지 못하는 메모리 취약점을 탐지할 수 있음을 확인하였다.