• Journal of Microbiology and Biotechnology
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• v.29 no.2
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• pp.268-273
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• 2019

The specificity of a Bacillus licheniformis uridine diphosphate (UDP) glycosyltransferase, YjiC, was increased towards thymidine diphosphate (TDP)-sugar by site-directed mutagenesis. The Arg-282 of YjiC was identified and investigated by substituting with Trp. Conversion rate and kinetic parameters were compared between YjiC and its variants with several acceptor substrates such as 7-hydroxyflavone (7-HF), 4',7-dihydroxyisoflavone, 7,8-dihydroxyflavone and curcumin. Molecular docking of TDP-glucose and 7-HF with YjiC model showed pi-alkyl interaction with Arg-282 and His-14, and pi-pi interaction with $His^{14}$ and thymine ring. YjiC (H14A) variant lost its glucosylation activity with TDP-glucose validating significance of His-14 in binding of TDP-sugars.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.492-494
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• 2012

본 논문에서는 Kinect 장비를 이용하여 모션캡쳐를 할 수 있는 툴을 제작하여 제공한다. 자신이 캡쳐한 모션 데이터를 Web상에 공유하여 다른 사용자들이 볼 수 있게 한다. 궁극적인 목표로는 보급형 모션캡쳐장비 Kinect 사용한다면 간단하고 비교적 저렴하게 모션캡쳐를 사용할 수 있을 것이며, 모션캡쳐라는 생소함을 해소시키고자 함에 목표를 두었다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.1403-1404
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• 2011

본 논문에서는 동영상과 다양한 데이터들을 매쉬업하여 통합미디어컨텐츠(UMC : United Media Contnets)를 수월하게 제작하고 재생시켜주는 E.M.P.Z(Editor Media Player Zone)의 개발에 대해 기술한다. E.M.P.Z는 에디터를 사용하여 다양한 데이터를 편집하는 기능과 UMC를 재생하기 위한 플레이어 기능, 그리고 웹기반환경에서 검색 및 플레이기능 등을 제공하며, 학습을 위한 동영상강의, 스포츠중계, 광고 등의 다양한 분야에서 활용 가능하다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.1439-1440
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• 2011

본 논문에서는 경영학에서 요구하는 바람직한 목표가 갖추어야 할 SMART조건과 자기 경영에 필요한 PDCA 모델을 활용하여 목표를 달성할 수 있도록 도와준다. 목표를 이루기 위한 계획을 진행해 나가면서 자신이 실천한 내용 및 진행정도를 확인 할 수 있고, 다음 계획을 수행하는데 피드백을 받을 수 있다. 이러한 실천한 계획의 누적된 데이터(수치)를 통하여 개인의 역량 확인과 문서화를 할 수 있다. 이렇게 자신이 세운 계획은 이행정도를 참고하여 다음 계획에 반영한다면 보다 효과적이고 자신에게 맞는 계획을 세울 수 있을 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.536-538
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• 2008

임베디드 시스템은 안정성이나 신뢰성이 매우 중요하고 개발 난이도가 높음에도 불구하고 상품의 개발기간을 최소화하여 시장진입시점을 빠르게 해야 하는 어려움이 있다. 프로토타이핑 개발 방법론은 그러한 임베디드 시스템 제품의 개발 비용을 최소화하고 경쟁력을 강화하기 위해 널리 이용되고 있다. 본 논문에서는 프로토타이핑 개발도구인 RapidPLUS와 ESPS(Embedded System Prototype Suit)를 이용하여 가상 프로토타이핑을 하여 자동차 시뮬레이터와 실물 프로토타입인 모형자동차를 구현한 후 무선인터넷을 이용한 원격자동차 제어 e-Car시스템을 구현하였다.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.194-194
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• 2009

본 논문에서는 선박 내에서 네트워크로 연결된 수많은 임베디드 장비들의 상태정보들을 수집 분석하고, 각종 장비들 간의 데이터 상호교환으로 발생하는 통신 버틀렉 등을 분석할 수 있는 선박 임베디드 장비 모니터링 도구에 대하여 기술하였다.

• Journal of the Korean Society of Earth Science Education
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• v.9 no.3
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• pp.323-340
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• 2016

The purpose of this study is to investigate the effect of observing material on the phase change of moon considering the orbits of earth and moon for elementary school students. For this study, the material which shows the orbit of moon tilted at $5^{\circ}$ with the orbit of earth is developed. 110 6th grade students in an elementary school are sampled. They are divided into the experimental group and the control group. The lessons using the material developed in this study are implemented to the experimental group, and the lessons using the material proposed in ordinary textbook are implemented to the control group. The pre, post, delayed concept tests on the phase change of moon are administered to the students of the experimental group and the control group, and semi-structured interviews are conducted for each concept level. According to students' responses, the concept levels are divided into 'Phase recognition', 'Space viewpoint', 'Earth viewpoint', and 'No recognition'. The experimental group and the control group are homogeneous in the pre-test. The result of this study shows that the experimental group gains significantly more scores than the control group in the post and delayed tests. Also, in the post and delayed tests, more students of the experimental group are in the highest level 'Phase recognition' than the control group. Finally, students of the experimental group who were in the 'Phase recognition' and 'Space viewpoint' explain more scientifically than the students of the control group. Therefore the results of this study show that the observing material on the phase change of moon considering the orbits of earth and moon is effective.

• Journal of Korean Elementary Science Education
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• v.19 no.1
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• pp.41-56
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• 2000

The purpose of this study was to investigate the change of elementary school students' conception on the movement of the moon, after teaching a lesson about the lunar phase which focused on concrete activities. The 396 subjects in this study consisted of intact groups of second, third, fourth, fifth, and sixth grade students. Pre-test and post-test instrument concerning on the conception in the movement of the moon were developed after reviewing the related literature and curriculum. Prevailing conceptions were identified by frequency of each conception. Then, the pattern of change and consistency of each conception were analyzed in comparison pre-test with post-test. To figure out the effect of teaching, the GEFT and the GALT instrument were administered to analyze it by gender, cognition mode and level. SPSS/WIN programs were used to process the data. The result showed that teaching 'movement of the moon' was the most effective in fourth grade. The effect of teaching 'changes in shape of the moon' was effective regardless of their sexes. Teaching 'changes in shapes of the moon' was more effective for the students whose cognitive modes were field-independent, than those filed-dependent. But the improvement by the teaching was not significantly different. The pre-score by cognitive level was significantly high in the order of the formal operational, transitional stage and the concrete operational stage. But the improvement of conception after teaching was high in the order of the concrete operational, transitional stage and the formal operational stage. That is to say, teaching was more effective as the cognitive level lowered.

• Journal of the Korean Society of Earth Science Education
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• v.8 no.1
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• pp.56-65
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• 2015

The purpose of this study is to investigate how elementary school student understands or students understand the illustrations on the phase change of the Moon in science textbook and to find out how textbook illustration helps students form the conception of the phase change of the Moon. To identify this purpose, we selected illustrations on the phase change of the Moon in the science textbook revised in 2007 and 2009 revised science textbook. For this study we selected and interviewed 20 students in the fifth grade. We integrated all data collected through interviews and created a transcription and a protocol and then, confirmed scientific conceptions related to the phase change of the Moon in students' illustration reading. The result are as followings: First, students read more scientific conceptions related to the phase change of the Moon in illustration of the 2009 revised science textbook which is presented with the universal observer's view point and the earth observer's view point. Second, students who find meaning in the various elements of the illustration and interpret with the integration of the various elements, get a lot of relevant information from illustration. All students have no differences recognizing the elements presented in illustration. But there are differences of contents of illustration reading depending on how students interpret the illustrations with integration of the various elements and if students cannot figure out the four scientific concepts needed to understand the phase change of the Moon, they ignore the information provided by illustration or analysis in their own way according to information provided by illustration. So misconception appears in this process.

• The Journal of Korean Physical Therapy
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• v.35 no.3
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• pp.71-76
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• 2023

Purpose: This study investigated effect of the scapular retraction exercise on the subacromial and costoclavicular space using different thera-band intensities. Methods: Thirty-six healthy adults participated in this study, and the subjects were randomly divided into three groups (low, moderate, and high-intensity groups). The exercise was conducted twice a week for three weeks. The subacromial and costoclavicular space were measured before and after the intervention via ultrasonography. Data analysis was performed using the two-way Analysis of Variance with repeated measures and the paired t-test. Results: The effect of the scapular retraction exercise on the subacromial and costoclavicular space using a thera-band after a 60° shoulder abduction has significant difference in all groups (p<0.05). However, there was no significant difference between the groups, and the values in the groups before the exercise did not differ significantly from those after the exercise (p>0.05). Conclusion: Our results indicate that the scapular retraction exercise after a 60° shoulder abduction can be used to widen the subacromial and costoclavicular spaces.