• Journal of Engineering Education Research
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• v.22 no.5
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• pp.29-36
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• 2019

Here we analyze a case of redesigned course named "Prospect of Nuclear Engineering" as an example of student-entered education which came to the fore of university education innovation. This course was reformed from lecture-based to student-centered class by changing the context as follows: Stimulating students by addressing various problems or episodes behind scientific and mathematical concepts in the history; Offering experimental project to perceive the importance of differential equations; Exploring the research status and issues of nuclear engineering and the ways of attacking them by discipline; Discussing the public acceptance of nuclear power plants. Small group activities using 'small group discussion' and 'peer-learning' have been applied in this course to enhance students' critical and creative ability. In the survey, students rated highly in the fact that they could actively interact with the peers and that they could think for themselves through 'small group discussion' and 'peer-learning' which is not just the way of conveying knowledge.

• The korean journal of orthodontics
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• v.53 no.6
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• pp.393-401
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• 2023

Objective: To investigate the long-term effects of 4-hexylresorcinol (4HR) on facial skeletal growth in growing male rats, with a focus on diabetic animal models. Methods: Forty male rats were used. Of them, type 1 diabetes mellitus was induced in 20 animals by administering 40 mg/kg streptozotocin (STZ), and they were assigned to either the STZ or 4HR-injected group (STZ/4HR group). The remaining 20 healthy rats were divided into control and 4HR groups. We administered 4HR subcutaneously at a weekly dose of 10 mg/kg until the rats were euthanized. At 16 weeks of age, whole blood was collected, and microcomputed tomography of the skull and femur was performed. Results: All craniofacial linear measurements were smaller in the STZ group than in the control group. The mandibular molar width was significantly smaller in the 4HR group than in the control group (P = 0.031) but larger in the STZ/4HR group than in the STZ group (P = 0.011). Among the diabetic animals, the STZ/4HR group exhibited significantly greater cortical bone thickness, bone mineral density, and bone volume than the STZ group. Serum testosterone levels were also significantly higher in the STZ/4HR group than in the STZ group. Conclusions: 4HR administration may have divergent effects on mandibular growth and bone mass in healthy and diabetic rats. In the context of diabetes, 4HR appears to have beneficial effects, potentially through the modulation of mitochondrial respiration.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.242-244
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• 1999

본 논문은 Independent JPEG Group의 JPEG 복호과정에 대해서 설명한다. IJG JPEG의 복호과정은 JPEG 표준 사양과 동일한 entropy decoding, inverse quantization, inverse DCT, MCU disassembly 과정을 거친다. IJG JPEG의 특징적인 개념으로는 iMCU, rowgroup, context, huffman optimization, 2-pass quantization, upsampling, downsampling등이 있다. 본 논문은 IJG JPEG의 복호과정에 대한 전반적인 설명과 구성 모듈에 대한 기능을 기술한다.

• Publications of The Korean Astronomical Society
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• v.27 no.4
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• pp.135-140
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• 2012

The importance of multiwavelength astronomical surveys is discussed in the context of galaxy evolution. The AKARI Deep Field South (ADF-S) is a new, well placed survey field that is already the subject of studies at a wide range of wavelengths. A number of ADF-S observational programmes are discussed and the prospects for the ADF-S as a future resource for extragalactic astronomy is explored.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.466-468
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• 2003

유비쿼터스 컴퓨팅이라는 주제를 놓고, 예술가의 상상력과 과학자의 지식을 융합한 연구를 통해 다수의 사용자가 인터렉트 할 수 있는 감성공간을 구현하였다. 이와 같은 연구의 새로운 패러다임은 문화 산업과의 연계를 통한 창구효과를 통하여 경제적, 문화적 이익을 창출 할 수 있다. 아울러, 한국적인 가족 문화와 감성에 맞는 유비쿼터스 컴퓨팅의 연구는 분야에 제한 받지 않고, 다각적인 방법론으로 접근한다면 학제간의 연계발전을 가지게 되는 것은 물론. 편리한 미래의 생활 환경을 창출하는 상승효과를 이룰 것이다. 이러한 연구의 개념을 시각화한 설치 미술을 통한 Group context에 맞는 감성공간을 구현 하였다.

• Research in Mathematical Education
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• v.7 no.1
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• pp.11-24
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• 2003

The key features of our integrated approach to teaching and loaming college mathematics include interactive and discussion-based teaching, small group work, computer as a tool, problem solving approach, open approach, mathematics in context, emphasis on mathematical thinking and creativity, and writing/communicating about mathematics. In this paper we report a few examples to illustrate the type of problems we use in our integrated approach.

• Journal of the Korean Mathematical Society
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• v.50 no.6
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• pp.1349-1367
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• 2013

The weighted Moore-Penrose inverse will be introduced and studied in the context of Banach algebras. In addition, weighted EP Banach algebra elements will be characterized. The Banach space operator case will be also considered.

• Bulletin of the Korean Mathematical Society
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• v.31 no.2
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• pp.289-295
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• 1994

Let (A,G,.alpha.) be a $C^{*}$-dynamical system. In [3] the classical notions of ergodic properties of topological dynamical systems such as topological transitivity, minimality, and uniquely ergodicity are extended and analyzed in the context of non-abelian $C^{*}$-dynamical systems. We showed in [2] that if G is a compact group, then minimality, topological transitivity, uniquely ergodicity, and weakly ergodicity of the $C^{*}$-dynamical system (A,G,.alpha.) are equivalent.alent.

• Proceedings of the Korean Society for Quality Management Conference
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• 2004.04a
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• pp.103-108
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• 2004

This paper will describe integrated system design process and its application. Integrated design process is performed activities concurrently and sequentially for product development. For a group of activities to be truly integrated, the flow of deliverables among them must be well defined, and committed to. For this purpose, the study will suggest procedure that is executed context analysis of standard process, interface definition from activity decomposition, integration of related activities, and definition of concurrency & sequential activities flow, This procedure and method will contribute to minimize time loss that is emerged from activities iteration by not definitely definition of activities interface.

• Journal of The Korean Association For Science Education
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• v.17 no.1
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• pp.31-44
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• 1997

One class of grade 7 was chosen as a control group, and the other as an experimental group. The control group watched only a film of motion in weightless situation, but the experimental group had a contrastive discussion before watching the film. In pretest, pupils were given contrasted views between the pre-Galilean and post-Galilean about falling and horizontal motion of bodies, and asked to choose one from two points of view and to write the reason why they choose it. After the pretest, control group students watched the same film as the experimental group did. On the falling problem, the control group ignored the contents of the film or regarded related contents as not related contents. However, through the contrastive discussion, experimental group pupils reconstructed their past vague ideas and noticed the cause of falling which was not perceived by the control group. On the horizontal motion, some in the control group agreed with post-Galilean view points after watching the film. Some of the pupils in the experimental group agreed with the post-Galilean viewpoint after performing the contrastive discussion. However, most of them agreed after watching the film. So we can conclude that the contrastive discussion which helped students to reconstruct their ideas made the difference between the two groups.