• 한국의류학회지
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• 제25권3호
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• pp.569-576
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• 2001

The purpose of this study is to develop multifunctional fibers by sticking cinnamon microcapsules on cotton knit. The prepolymer was made from urea-formaldehyde for usage of wall materials of microcapsules. The parameters for adoptable condition are 5000rpm of agitation speed, 1% of dispersions concentration according to the observation with SEM and particle analyzer. The Antimicrobial activity of cotton knit treated with capsule was increased greatly and maintained on the laundering cycle.

• 한국언론정보학보
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• 제74권
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• pp.72-108
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• 2015

진화하는 모바일 기술은 새로운 스마트폰을 출시하고, 주기적으로 이용자들에게 교체하도록 유도하면서 모바일 기술 속에 이용자들을 가두어놓는 것 같다. 그러나 단순히 기기의 이용이 기술 자체의 속성에 의해 전적으로 결정되는 것이 아닌 바, 이용자들이 '어떻게 수용하고 있으며 인지하고 있는가'에 따라 스마트함에 대한 의미에 차이가 발생할 것으로 보았다. 특히 이 연구에서는 스마트폰의 '스마트함', '스마트하게 이용한다'라는 현상적 개념을 '스마트한 이용'의 개념으로 구체화하였고, 2차 측정모형(second-order measurement model)을 통해 스마트한 이용의 구성개념을 검증하였다. 그 결과 8개로 구성되었던 1차 요인들은 6개로 축소되었는데, 이 과정에서 '사용준비성'과 '미디어 통합성'이 '다기능 사용 준비성'으로 묶였으며, '시간 효율성'과 '관계 연결성'이 '관리 효율성'으로 합쳐졌다. 결과적으로 '스마트한 이용'의 구성개념은 '다기능 사용 준비성', '관리 효율성', '미디어 일체감', '기기연결성', '이용자 중심 최적화', '외부연결성(being connected)'의 6개 요인으로 추출되었다. 이에 스마트한 이용이란, 스마트폰의 기기적 특성을 기반으로 모바일 공간 속에서의 자율적 활용 역량으로 적절히 조율되는 이용행태로 설명될 수 있을 것이다.

• Bulletin of the Korean Chemical Society
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• 제32권1호
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• pp.273-276
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• 2011

Uniform Ag nanoparticles (< 10 nm) were effectively prepared in 1-amino-4-methylpiperazine as a solvent with multiple functions including reduction and stabilization. An Ag-complex such as $Ag_2(ehac)_2(eha)_2$ (ehac = 2-ethylhexylammonium carbamate; eha = 2-ethylhexylamine) was used as an Ag-precursor, whereas the usage of a salt such as $AgNO_3$ showed the formation of Ag nanoparticles in larger and irregular size (30 - 500 nm). The Ag nanoparticles (< 10 nm) prepared by using the Ag-complex could also be effectively stabilized by 1-amino-4-methylpiperazine. Transmission electron micrographs confirmed that the Ag particles were spherical and in the nanometer size.

• 한국콘텐츠학회논문지
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• 제20권11호
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• pp.644-655
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• 2020

연구는 오디오 콘텐츠 기반 AI 스피커 이용 인식과 지속 이용 의도를 이용 기능에 따른 차이로 살펴보았다. 구체적으로 AI 스피커 이용기능별(음악 청취, 뉴스 습득, 생활 검색) 이용량을 기준으로 이용 패턴(단일 기능 중심 집단과 다중 기능 중심 집단)구분하고, 이들에 따라 AI 스피커 이용 인식과 지속 이용 의도의 차이를 분석하였다. 분석은 AI 스피커 이용 경험이 있는 성인 남녀 335명을 대상으로 온라인 설문조사 한 응답을 활용하였다. 분석결과는 다음과 같다. 첫째, 남성이 뉴스 습득을 위해 AI 스피커 이용이 많았고, 20대와 40대 이상 간의 뉴스 습득 정도도 차이를 보였다. 둘째, AI 스피커의 유용성과 사용 용이성에 대한 인식은 다중 기능 중심(음악 청취-뉴스 습득-생활 검색) 이용 집단에서 높게 나타났다. 마지막으로 AI 스피커의 지속 이용 의도도 다중 기능 중심 이용집단에서 가장 높게 나타났으며, 음악 청취 기능에 집중된 이용자의 지속 이용 의도가 다른 기능의 이용자에 비해 상대적으로 높다는 사실도 발견했다. 본 연구의 결과는 향후 AI 스피커의 이용 확산과 브랜드별 제공 서비스 전략 수립을 위한 기초자료로 활용될 것을 기대한다.

• 한국태양에너지학회 논문집
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• 제39권5호
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• pp.29-40
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• 2019

In response to the rapid climate change, in order to save energy in the field of buildings, the country is planning not only zero energy buildings but also zero energy cities. In the Urban Development Project, the Energy Use Plan Report is prepared and submitted by predicting the amount of energy demand at the planning stage. However, due to the activation of zero-energy buildings and the increase in the supply of new and renewable energy facilities, the energy consumption behavior of buildings in the city is changing from the previous ones. In this study, to estimate urban energy demand of Zero Energy City, building energy demand forecasts based on "Passive plans for use of energy based primary energy consumption", "Actual building energy usage data from Korea Appraisal Board" and "data from Certification of Building Energy Efficiency Rating" as well as demand forecast according to existing "Consultation about Energy Use Plan Code" were calculated and then applied to Multifunctional Administrative City 5-1 zone to compare urban total energy demand forecasts.

• 한국실내디자인학회논문집
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• 제19권3호
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• pp.224-233
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• 2010

As urban function has become diversified and complicated, multifunctional complex facilities to satisfy new functional desires are necessary. Since local autonomy started, many facilities previously run and managed by central administrative agencies are now under management of localities, and functionally, the necessity for governments complexes town to satisfy diverse taste of populace such as creating local community becomes imminent. Analyzing characteristics by space composition factor of the public health center, newly built as part of such governments complexes town and understanding required area of each part, this project is to be used as basic material for construction plan of public health center that is equipped with local characters while devising construction of the public health center in the governments complexes town. Research method is to analyze four public health center facilities located in governments complexes town sites built after 2007, among twenty five public health centers in Seoul, by spatial functions. Also, based on statistical documents of usage of public health center facilities, research over spatial compositional factors and area composition has been conducted. As a result, connectivity between local government building located inside the governments complexes town and public health center and that of spatial composition factor by part, area ratio by part and floor type of public health center are comprehended. Connectivity type of public health centers are divided into horizontal and vertical connectivity and it is found that spatial composition of public health center is compartmentalized into low level, mid level and high level, to make access by users easier. Level type is decided as radial, rotational and combined by hallway connecting facilities.

• 대한안전경영과학회지
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• 제15권1호
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• pp.109-120
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• 2013

As information-oriented industry has been developed and electronic devices has come to be smaller, lighter, multifunctional, and high speed, the components used to the devices need to be much high density and should have find pattern due to high integration. Also, diverse reliability problems happen as user environment is getting harsher. For this reasons, establishing and securing products and components reliability comes to key factor in company's competitiveness. It makes accelerated test important to check product reliability in fast way. Out of fine pattern failure modes, failure of Electrochemical Migration(ECM) is kind of degradation of insulation resistance by electro-chemical reaction, which it comes to be accelerated by biased voltage in high temperature and high humidity environment. In this thesis, the accelerated life test for failure caused by ECM on fine pattern substrate, $20/20{\mu}m$ pattern width/space applied by Semi Additive Process, was performed, and through this test, the investigation of failure mechanism and the life-time prediction evaluation under actual user environment was implemented. The result of accelerated test has been compared and estimated with life distribution and life stress relatively by using Minitab software and its acceleration rate was also tested. Through estimated weibull distribution, B10 life has been estimated under 95% confidence level of failure data happened in each test conditions. And the life in actual usage environment has been predicted by using generalized Eyring model considering temperature and humidity by developing Arrhenius reaction rate theory, and acceleration factors by test conditions have been calculated.

• 한국농촌건축학회논문집
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• 제24권4호
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• pp.85-95
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• 2022

This study is about the story of 'Saemi', existing in the Sacheon Alluvial fan area. Saemi is a local word for Dumbeong, which is the traditional water irrigation facilities in this area that could be formed according to the geographical characteristics of a Alluvial fan site. In the meantime, although Saemi has been an important source of water, related research has been mainly done from an ecological point of view. Accordingly, the researcher paid attention to the functional aspects of Saemi itself, grasped its location, distribution status, and usage including the construction method, and considered its intrinsic value through classification and characteristic analysis of Saemi. As a result of five field surveys from September 2021 to October 2022, 129 Saemies remained in the Sacheon alluvial fan area. According to the structure and shape, Saemi could be divided into basic type, complex type, and buried type. The basic type was subdivided into bucket-type and stairs-type along with the complex type, and the buried type was subdivided into all buried-type and some buried-type. Saemies were mainly distributed at the distal end of the Sacheon alluvial fan site, individual Saemies were built on farmland, and common Saemies were usually built along roadsides adjacent to villages. The reason why the Saemies are concentrated at the distal end is the geographical characteristics of the alluvial fan where the water underflows. Saemi was an important multifunctional water supply source equivalent to the main water source for people at the distal end of the pond who did not receive a stable supply of water from the reservoir. Saemi was at the center of the underground water irrigation network agricultural system in the Sacheon alluvial fan area according to the principles of 'bbaeim(drop out)' and 'gaepim(pooling)' It has provided a foundation for establishing itself as an appropriate technology in this area. Such Saemi contributed to the rural landscape and agricultural biodiversity through its own system and served as a public interest function. It is necessary to know, conserve, manage, and continuously utilize the value of this Saemi as an agricultural heritage.