• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계 학술발표회 논문집(II)
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• pp.365-368
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• 2006

In this paper, the post cracking stress-crack width relationship of the composite is studied from a micromechanics points of view. Cook-Gordon debonding effect is studied by more refined method with considering of chemical friction of fiber interface. As a result, fiber with pre-debonding length retards stress development and shows more wide crack width for the same force level. longer pre-debonding length and lower pre-debonding bond strength results in lower full-debonding force, but same crack width.

• 대한심미치과학회지
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• 제10권1호
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• pp.16-27
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• 2001

Composite resin have very important roles as a esthetic fillng material. Today we are confusing by a numerous number of the polymer options in the market. Are there any complications such as tooth sensitivity? Do they have stabilization in the long term aspect? These are the reasons why many dentists don't use composite resin in my country. But the problems can be overcome by choosing the best suited materials and meticulous clinical procedures. So that we are able to expand our clinical boundary. I would like to introduce the clinical techniques of Dr.Gordon Christensen in Utah, and overall clinical cases under the base of CRA newsletter.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2006년도 추계 학술대회논문집
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• pp.210-210
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• 2006

IT technologies(Chips, Grid and e-Science) are rapidly changed from 1965. In 1965, Intel co-founder Gordon Mooresaq the future. His prediction popularly known as Moore's law, state that the computer chips double in power every 18 months Grid computing offers a model for solving massive computational problems by making use of the unused resources of large numbers of disparate, often desktop, computers treated as a virtual cluster embedded in a distributed telecommunications infrastructure. In this paper, I will discuss current status of supercomputing technology and haw we can use these on CFD. Functionally, one can classify Grids into several types:

• 원자력산업
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• 제37권4호
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• pp.72-83
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• 2017

'미래 세대를 위한 우리의 에너지 선택'을 주제로 한 국내외 원자력 에너지 전문가 좌딤회가 4월 5일 경주 힐튼호텔 오크룸에서 열렸다. 원자력산업회의와 원자력문화재단이 공동 주최한 이번 좌담회는 4월 5~6일 열린 '2017 한국원자력연차대회'에 참석한 해외 원자력 전문가를 초청하여 마련된 것으로, 강재열 한국원자력산업회의 상근부회장(좌장), 김호성 한국원자력문화재단 이사장, William D. Magwood IV OECD-NEA 사무총장, Gordon Mackerron 영국 Sussex 대학교 과학정책연구소(SPRU) 교수, Tomoko Murakami 일본에너지경제연구소(IEEJ) 연구책임자, Michael Shellenberger 미국 Environmental Progress 회장 등이 참석하여 2시간에 걸쳐 의견을 나누었다. 좌담회 전문을 게재한다.

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2004년도 생명공학 실용화를 위한 비젼
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• pp.175-175
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• 2004

• 국제초고층학회논문집
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• 제7권1호
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• pp.85-93
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• 2018

The design of a supertall building poses many challenges to the architect and engineer. Using Jeddah Tower as a case study; this paper intends to discuss a few of those challenges specifically related to the arrangement of programmed spaces in the tower, their functional connection by means of the vertical transportation system and physical connection with shafts which introduces the potential for stack effect in the building. The measures applied in response to and mitigation of these issues are discussed.

• 대한수학회지
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• 제59권5호
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• pp.1015-1045
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• 2022

Zagier introduced the term "strange identity" to describe an asymptotic relation between a certain q-hypergeometric series and a partial theta function at roots of unity. We show that behind Zagier's strange identity lies a statement about Bailey pairs. Using the iterative machinery of Bailey pairs then leads to many families of multisum strange identities, including Hikami's generalization of Zagier's identity.

• Journal of the Korean Wood Science and Technology
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• 제10권2호
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• pp.12-21
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• 1982

Red pine and Japanese larch (Larix leptolepis Gordon) grown in Korea have been the main species of coniferous resources in Korea. Especially, planting area of Japanese larch has been increased continueously in the recent years due to its superior plant type and rapid growth rate and its stocks reached approximately 4.32 million cubic meters at the present time. Although many research works have been done for the utilization of the larch wood in various ways, still many problems are existed in its chemical applications due to a large proportion of soluble extractives. In this study, chemical composition of larch extractives and chemical structure of its major component were analyzed. In order to identify the basic structure of major component, gas-liquid chromatography for separation of some completely methylated alditols as their acetates on a 3% - ECNSS-M on Gas Chrom Q. column was used. Proportion of extractives of Japanese larch wood was higher than that of other conifers and major component of the soluble extractives was arabinogalactan, a schematic structural formula which was presented in Figure 2. The molar ratio of arabinose and galactose was 1:4.5. The main chain of arabinogalactan was composed of 1,3 linked ${\beta}$-D-galactopyranose residues, each of which carried a side chain, attached to the C-6 positions. The exact nature of all of the side chains is not known, but the majority of these side chain was composed of 1, 6 linked ${\beta}$-D-galactopyranose residues, with 2~3 such units present per average chain. Some of the galactose units in the main chain had a residue of 3 - 0 - ${\beta}$-L-arabinopyranosyl-L-arabinofuranose. In addition, a few terminal residues of D-glucuronic acid also was confirmed, attached to C-6 position of the D-galactopyranose residue. It could concluded that the main structure of highly branched arabinogalactan from Japanese larch extractive was essentially the same as those of the other larch species.

• 한국콘텐츠학회논문지
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• 제14권3호
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• pp.80-93
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• 2014

이 연구는 사랑과 성을 다루는 로맨틱 코미디 영화에서 화면 분할 기법이 작품의 서사 목표와 전략에 맞게 어떻게 활용되는지를 검토한다. 로맨틱 코미디의 플롯은 남녀의 결합을 지향하지만 코믹한 상황과 에피소드를 통해 그 결합을 최대한 지연시키는 구조로 되어 있다. 이러한 지연 구조에서, 로맨틱 코미디 영화의 화면 분할은 대개 구성점2 이전에 배치되어, 영화의 초점을 두 남녀 주인공에게로 집중시키면서 코미디를 창출하는 특징을 보인다. 화면 분할이 웃음을 유발하는 방식은 두 주인공 인물 간의 정보 격차에 따르는 긴장감, 대사의 중의법, 그리고 분할된 이미지의 결합을 활용하는 것이며, 웃음의 소재는 사랑과 성에 관련한 것들이다. 연구의 검토 대상이 된 로맨틱 코미디 영화는 마이클 고든 Michael Gordon의 <필로우 톡 Pillow Talk>(1959)과 피톤 리드 Peyton Reed의 <다운 위드 러브 Down with Love>(2003)이다.

• Advances in Traditional Medicine
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• 제4권3호
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• pp.187-195
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• 2004

A number of plants from different geographical origins have been shown to possess antioxidant activity. Some of them have been developed as natural antioxidant formulations for food, cosmetic and other applications. Bangladeshi flora is a rich source of a range of plant species, many of which are medicinal plants, and have been used in the preparations of the Unani and Ayurvedic traditional medicines. There are no, or just a few, reports on any systematic screening of the extracts of Bangladeshi plants for free radical scavenging activity using DPPH assay available to date. As part of our on-going search for biological activity in Bangladeshi plants, Kadam (Anthocephalus chinensis), Goran (Ceriaps decandra), Swarnalata (Cuscuta reflexa), Gab (Diospyros peregrina), Sundari (Heritiera fomes), Dhundul (Xylocarpus granatum) and Possur (Xylocarpus mekongensis) have been selected for the assessment of their free radical scavenging activity, and studies on the contents of alkaloids, anthraqunones, flavonoids and tannins in these extracts. Most of these species have been used in traditional medicine in Bangladesh and other countries for the treatment of various illnesses ranging from common cold to cancer. All extracts, except the methanol extract of Cuscuta reflexa, displayed significant free radical scavenging activity in the DPPH assay $(RC_{50}$ values within the range of $2.75\;{\times}\;10^{-2}\;to\;4.7\;{\times}\;10^{-3}\;mg/mL)$. Among these extracts, the methanol extract of Xylocarpus granatum exhibited the most potent activity $(4.7\;{\times}\;10^{-3}\;mg/mL)$ and that of Cuscuta reflexa had the least activity $(1.64\;{\times}\;10^{-1}\;mg/mL)$. While none of these plants showed positive tests with Dragendorff's reagent, presence of low to moderate amounts of phenolic compounds, e.g. anthraquinones, flavonoids and tannins was evident in all of these plants, except for the methanolic extracts of C. reflexa and the barks of D. peregrina, which did not display any evidence for the presence of flavonoids and anthraquinones, respectively.