• 한국태양에너지학회 논문집
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• 제32권6호
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• pp.76-84
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• 2012

This study conducted experiments to measure air currents in an experimental building according to external conditions, types of induction ducts, and types of internal sockets by applying an external induction duct comprised of inducing openings and lines and induction units to the kitchen and bathroom vents at the rooftop of a super high-rise apartment building in order to help to improve the venting performance. The study also proposed the optimization of the external induction-style kitchen and bathroom vents capable of wind power generation. (1) As for air current distribution according to vent velocity changes, it increased the venting performance of the kitchen and bathroom by 1.0m/s at vent velocity of 2.0m/s or higher and allowed for wind power generation. (2)As for air current distribution according to external velocity changes, it increased the venting performance of the kitchen and bathroom by 1.2m/s at external velocity of 2.0m/s or higher and allowed for wind power generation. (3)As for air current distribution according to wind direction changes($0{\sim}180^{\circ}$), it was favorable for higher vent velocity when the angle between the external induction duct direction and prevailing wind direction was within ${\pm}30^{\circ}$. (4)As for air current distribution according to induction duct type, the[M1] type combining the inducing openings and lines with the induction units recorded the highest improvement effects in the kitchen and bathroom venting performance by increasing vent velocity by 46%. (5)As for air current distribution according to the changing types of internal sockets where the main ducts of the kitchen and bathroom are connected to the external induction ducts, the venturi tube type[Sv] increased vent velocity by 66% based on the smoothest external inflow.

• 무역학회지
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• 제46권4호
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• pp.77-93
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• 2021

The results of this paper show that strategic and technical factors in the integration of logistics between shipping and logistics companies act as a synchronizing factor for internal and external logistics integration. In addition, internal integration of logistics is expanded to external integration, and internal and external logistics integration is shown to enhance the logistics performance of companies. In other words, the greater the strategic need for logistics integration and the higher the utilization of logistics technology, the stronger the motivation for logistics integration. Furthermore, both internal and external integration of logistics have a positive impact on companies' logistics costs and improvement of logistics services.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 2부
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• pp.89-90
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• 2011

External wall cleaning is a task that is currently being performed by human workers. The recent surge in the number of high-rise buildings has led to such problems as difficulties in cleaning the wall, high risk to the specialized workers, and increased maintenance expenses. As a fundamental measure to perform external wall cleaning work in a safer manner, automation/mechanization has been on the rise. This research aims to classify façade types and analyze the performance requirements of a wall-cleaning robot, as preliminary research to develop a wall-cleaning robot. The replacement of specialized workers with robots is expected to improve both safety for workers and quality of cleaning.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.137-138
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• 2019

To overcome the limitation in relation to thermal insulator's selection and installation method that is suitable for exterior insulation and waterproof construction methods, a production basis of thermal insulators of which manufacturing knowhow is held by companies was ensured and future-oriented construction methods to adopt new materials were applied. Performance verification was conducted through performance and mock-up tests of thermal transmittance on the cross sections where the flexible insulators were applied based on the improved prototype and performance data were obtained. To overcome the biggest drawbacks (walking feeling and damage etc.) in the exterior insulation and waterproof construction method, inserting a protective layer between thermal insulator and water-proof layer was proposed, and polypropylene corrugated cardboards.

• 교육시설
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• 제6권4호
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• pp.16-23
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• 1999

The thermal and condensation performance of steel stud walls are monitored in steel-framed schools of Ee-Wol Elementary School and kindergarten using temperature and humidity sensors installed. The monitoring process carried out during the summer and winter period, shows decrement effect of the external heat flow to be quite remarkable and excellent. And steel stud walls provides a highly efficient time-lag effect in spite of its light weight property, with 30 minutes to 4 hours time-lag for external heat flow, which variation mainly depends on its location of each part of the wall. Any condensation phenomena are not observed in either external or internal surfaces.

• Asia pacific journal of information systems
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• 제29권2호
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• pp.217-247
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• 2019

This paper draws on the interdependence theory to examine the role of power and mutual dependence on the relationship between internal/external diffusion and performance improvement within a supply chain. The results from a survey of 375 respondents show that two patterns of IOS diffusion - internal diffusion and external diffusion - have different impacts on a firm's performance improvement according to differences in power and mutual dependence between two parties in the supply chain.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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• pp.681-684
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• 1999

The development of external prestressing methods has been one of the major trends in the concrete bridge constructions over the past decades. One of the promising methods to enhance the flexural strength of a externally prestressed girder is to place the tendons with large eccentricities. The test results in this study showed that the external prestressing of a composite girder increased the range of the elastic behavior, reduced deflections, increased ultimate strength, and added to the redundancy by providing the multiple stress paths. This study was conducted on the concrete bridges reinforced by the continuous girders and the external prestressing.

• Environmental Engineering Research
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• 제9권6호
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• pp.269-278
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• 2004

• 기술혁신연구
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• 제24권1호
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• pp.1-24
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• 2016

본 연구는 2005년과 2007년에 시행한 중소기업기술통계조사에 모두 응한 중소기업 중 전자부품, 영상, 음향, 통신 장비 업체(KSIC 32) 142개사를 대상으로 외부 자원 활용과 흡수능력이 2년 후 경영성과와 혁신성과에 어떠한 영향을 미치는지, 또한 흡수능력이 이들 관계를 어떻게 조절하는지를 실증 분석하였다. 분석 결과, 공동기술개발 여부와 정부지원액으로 측정한 외부 자원 활용은 성과에 유의미한 영향을 미치지 않았고, 매출액에 대해서만 R&D투자비는 정(+)의, R&D인력비는 부(-)의 영향을 끼쳤다. 그리고 흡수능력의 조절효과는 측정방식과 독립변수에 따라 다르게 나타났다. 즉, 공동기술개발을 수행할 때의 성과는 R&D투자비가 증가할수록 향상했지만, R&D인력비는 반대로 작용했다. 그리고 정부의 자금지원이 늘어날수록 성과가 향상하는 기업은 R&D투자비가 낮거나 R&D인력비가 높은 기업이었다. 이러한 연구 결과는 중소기업의 외부 자원 활용이 내부 역량을 대체하지 못하며 오히려 흡수능력을 축적하여 외부 자원 활용의 효과를 극대화 할 필요가 있음을 보여준다. 또한, 공동기술개발을 수행할 때에는 중소기업의 적극적인 R&D투자가 필요하며 정부의 자금지원은 R&D인력을 보유하고 있으나 자금을 확보하지 못해 독자적인 기술개발이 어려운 기업에 더욱 효과적이다. 본 연구는 제한된 산업과 표본에서 이루어진 한계가 있지만, 종단적 자료를 통해 인과관계를 규명함으로써 기존 연구들의 한계를 극복하였다.

• 한국콘텐츠학회논문지
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• 제11권3호
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• pp.351-367
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• 2011

선행연구들은 외식 프랜차이즈 환경에서 프랜차이저의 앙트러프러너 활동에 관한 프랜차이지의 지각을 거의 취급하고 있지 않고 있다. 따라서 본 연구는 프랜차이지의 관점에서 프랜차이저의 외부환경, 앙트러프러너 전략, 기계-유기 조직, 및 경영성과와의 관계를 공변량구조분석을 통하여 분석하였다. 자료는 2009년 10월1일부터 2010년 2월 28일까지 전국의 외식 프랜차이지를 605명을 대상으로 설문조사를 수집하였다. 분석 결과에 의하면 외부환경은 앙트러프러너 전략에 정(+)의 영향을 주고, 앙트러프러너 전략은 다시 시장 지향성과 경영성과에 정(+)의 영향을 미치는 것으로 나타났다. 이와 동시에 시장지향성은 유기적 조직을 채택하도록 만들었으며, 경영성과를 제고하는 것으로 나타났다. 또한 외부환경은 유기적 조직을 채택하도록 유도하였으며, 경영성과를 악화시킨 것으로 나타났다. 본 연구의 시사점은 첫째, 프랜차이저가 적극성, 혁신성, 및 위험추구성을 어느 정도 가지고 있느냐에 따라서 프랜차이즈 조직은 만족할 만한 경영성과와 현대 기업들이 필수적으로 갖추어야 될 시장지향성을 보유하게 되며, 둘째, 프랜차이저들은 시장지향성을 구성하고 있는 고객지향성, 경쟁지향성, 부서간 조화, 장기성, 수익성을 염두에 두면서 시장점유율을 유지 및 성장시켜야 하고, 셋째, 외식환경이 최근 상당히 역동적으로 그리고 비우호적으로 변화하는 관계로 이것이 조직 구조를 개편하게 만들고, 또한 경영성과에 나쁜 영향을 미치고 있는 만큼 외부환경에 대한 긴밀한 탐사가 필요하다고 하겠다.