• Proceedings of the Korean Society for Information Management Conference
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• 2010.08a
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• pp.81-88
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• 2010

오늘날과 같은 정보통신 발달의 시대에서 정보 전달의 신속성과 접근성을 보장하는 것은 정보서비스 기관의 경쟁력 강화에 매우 중요한 일이다. 마이크로 블로깅을 제공하는 서비스 중 하나인 트위터는 web 2.0 서비스의 대표주자로 시 공간을 초월한 도서관 정보서비스의 신속성과 접근성을 지원하는 강력한 도구로 부상하고 있다. 이에 본 연구에서는 국내외 도서관의 트위터를 중심으로 마이크로 블로깅을 활용한 정보서비스 적용사례를 조사하고 이와 같은 신기술 적용 활성화를 위한 시사점을 제시하고자 한다. 본 연구에서 조사한 사례는 미국 의회도서관, 미국 뉴욕 공공도서관, 영국 국립 도서관, 국내의 국립중앙도서관 디브러리, 포항공대 도서관인 포스텍 도서관 이고 주요하게 트위터의 수치적인 현황, 활용 목적, 내용, 이용하는 인터페이스 측면들을 조사 분석하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06d
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• pp.146-148
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• 2012

본 논문에서는 최근 이슈가 되고 있는 문화 컨텐츠인 WebToon 의 단순한 표현력을 보완하고 정적인 카툰이 아닌 동적인 카툰을 제공하는 서비스에 대해 기술한다. Background, Object, Particle 3 개의 Multi Layer 를 기반으로 중력가속도, 모멘트연산을 이용한 물리엔진이 적용된 Particle system 을 사용하여 컨텐츠에 동적인 효과를 나타내준다. 컨텐츠 제작자가 PC Tool 에서 작업한 컨텐츠를 리얼툰 서비스를 통하여 관리하고, Application 을 통하여 독자에게 제공하는 서비스에 대한 Architecture 를 제안한다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2011.11a
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• pp.624-628
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• 2011

To develop a pulse detonation engine, it needs to understand the mechanism of a detonation initiation, and establish the methods for measuring and analyzing the detonation phenomenon. In this study, DDT tube, which use oxygen-acetylene propellant mixture, were designed and manufactured, and the effect of equivalent ratio and Schelkin spiral on the characteristics of the detonation initiation were discussed.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2001.10a
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• pp.291-294
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• 2001

It is suggested that what kinds of key points are in order to decrease that calamities has suffered by typhoons that attacks annually from July to October in Korean peninsula. In considering to influence directly or indirectly huge calamities for Korea during 10 years with from 1991 to 2000, it is recorded that attacking times are 37.2% In August among total limes, 28.7% in July and 25.5% in September respectively. Especially the number of victims of lives and amount of calamities of properties are marked annually mean 142 persons and $6,111{\times}10^{10}$ won from 1990 to 1999, and similar to only 49 persons and $6,454{\times}10^{10}$ won in 2000. There are aims that are researched how to decrease number of victims and calamities of properties by flood and typhoon in this study.

• Environmental Analysis Health and Toxicology
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• v.19 no.2
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• pp.217-225
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• 2004

In order to evaluate a health effect of air pollution, we designed exposure group (taxi driver, street sweeper, street trader,) and non -exposure group (office clerk). We analysed exposure and biologic marker by using personal sampler. Mean NO$_2$ and benzene level in each group were statistically significant. Also, respiratory symptom, chronic cough, sputum, and dyspnea on exertion were statistically significant in each group.

• Journal of the Korean Magnetic Resonance Society
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• v.21 no.4
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• pp.119-125
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• 2017

The plucking season of green tea leaves is one of the important parameters that decide their metabolic diversity, quality, and prices. The effects of plucking sghlwleasons on green tea metabolites were investigated through metabolite profiling by $^1H$ NMR spectroscopy. The orthogonal projection on latent structure-discriminant analysis (OPLS-DA) showed clear discriminations of green teas by three different grades depending on plucking seasons: Ujeon, Sejak, and Jungjak. These results suggested that the nine peak groups could be used for diagnostics for identification of high quality Ujeon grade of green tea.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.1029-1032
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• 2011

가장 전형적이고 대표적인 재무분석 기법인 재무비율 분석 방법을 이용하여 내항공업계에서 시장점유율 2위인 사례기업을 경쟁 기업인 D 항공과의 비교 검토를 통하여 재무적 강약점을 분석하였다. 그 결과 수익성은 최근 들어 크게 개선되어 경쟁사를 앞서고 있는데 이는 효율적인 자산의 관리에서 기인한 바 큰 것으로 분석되었다. 유동성 및 안정성은 경쟁사에 비해 양호한 것으로 보이나 방어기간 면에서는 다소 취약한 것으로 분석되었다. 종합적으로 보면 경쟁사에 비하여 전반적으로 뒤떨어져 있던 경쟁력이 근래 들어 개선되고 있음으로 각종 재무 지표는 보여주고 있다.

• Fisheries and Aquatic Sciences
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• v.17 no.2
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• pp.189-195
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• 2014

Headspace volatile compounds of cold-stored and freeze-dried Krill Eupausia superba were analyzed to investigate their flavor qualities using a system combining a dynamic headspace isolator, an automatic thermal desorber, and a gas chromatograph-mass-selective detector. Levels of oxidation products of polyunsaturated fatty acids such as aldehydes, alcohols, and ketones, which are known to give seafood a nasty smell because of their low flavor threshold values, increased during cold storage of krill. Notably, levels of 2-methylpropanal, 3-methylbutanal, 2-methylbutanal and 2-butanone increased during its storage. They can be considered index compounds of off-odor according to freshness degradation during storage. By contrast, in freeze-dried krill powder, levels of aldehydes, ketones, and aromatic compounds decreased rapidly. Only alcohols, which did not greatly affect the food flavor, were isolated in large amounts. It was confirmed that levels of oxidized compounds of krill increased during cold storage, but decreased in freeze-dried krill.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.7
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• pp.1529-1533
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• 2005

In this paper designed available pre-amplifier to Intrabroadband power amplifier. Designed pre-amplifier used WJ company's AMI which frequency characteristic and noise characteristic are superior. Designed to have superior VSWR characteristic and frequency characteristic covering broadband of 100MHz ${\~}$ 3GHz using feedback. Designed ye-amp broadband special qualify such as EMC measurement equipment roll important position do to utilize to power amplifier of equipment that how consider.

• 한국연소학회:학술대회논문집
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• 2012.11a
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• pp.147-148
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• 2012

The syngas produced from coal gasification is cooled down for gas cleaning by a syngas cooler that produces steam. Due to the presence of fly slag in the syngas, erosion, slagging and corrosion especially in the upper part of the syngas cooler may cause major operational problems. This study investigates the flow, heat transfer and particle behaviors in the syngas cooler of a 300MWe IGCC plant by using computational fluid dynamics. For various operational loads and geometry, the gas and particle flows directly impinged on the wall opposite to the syngas inlet, which may lead to erosion of the membrane wall. In the evaporate channels inside the syngas cololr, the particle flows were concentrated more on the outer channel where slagging becomes more serious. The heat transfer to the wall was mainly by convection which was larger on the side wall below the inlet level.