• 기술혁신연구
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• 제30권4호
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• pp.57-82
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• 2022

최근 중소기업 혁신 지원 전략이 시장 중심의 혁신을 유도하는 방향으로 전환되면서 중소기업이 수행하는 정부 R&D의 세부과제 지원 유형 중 자유공모형 과제의 비중이 높아지고 있다. 본 연구는 이처럼 증가하고 있는 자유공모형 과제의 특성과 효과성에 대해 이론적으로 살펴보고 실증분석을 통해 어떤 조건에서 자유공모형 과제가 될 가능성이 높아지는지, 성과 측면에서는 어떠한 차이점이 있는지 알아보았다. 먼저 시장수요 중심으로의 국가 R&D전략 전환과 수요견인 혁신 관점에서 세부과제 지원 유형 중 자유공모형 과제의 특성과 의미에 대해 살펴보고, 자원기반 관점으로 자유공모형 과제가 성과측면에서 유리할 수 있다는 것을 이해하였다. 그 후 로짓분석과 성향점수매칭법 등 실증분석을 통해 자유공모형 과제가 될 확률이 높아지는 과제 특성과 수행기업의 특성을 밝히고, 자유공모형 과제가 연구비 1억원 당 더 많은 혁신 성과를 나타낸다는 결과를 얻었다.

• 대한관절경학회지
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• 제10권2호
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• pp.214-218
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• 2006

목적: 급성 또는 재발성 슬개골 탈구의 치료에 있어서 내측 슬개-대퇴 인대의 해부학적 위치를 고려하여 견인 봉합술을 이용한 관절경적 내측 관절막 중첩술을 새롭게 고안하였기에 소개하고자 한다. 수술 술기: 관절경하에서 내측 슬개-대퇴 인대가 위치하는 부위의 내측 관절막에 봉합사를 관절 밖에서 안으로 통과시킨다. 슬개골에 유도강선으로 3개의 터널을 뚫는데, 그 관절내 입구가 슬개골의 내측 변연 상부 1/2에 위치하도록 한다. 관절 내로 들어와 있는 봉합사를 슬개골의 터널을 통해 관절 밖으로 빼내고, 봉합사에 긴장을 준 상태에서 적절한 정도로 외측 지대 유리술을 시행한 후 봉합사를 결찰한다. 결론: 본 술기는 최근 중요시되고 있는 내측 슬개-대퇴 인대를 봉합함으로써 내측 관절막 중첩술의 효과를 극대화시키고 슬개골의 아탈구 및 경사를 교정할 수 있으며, 최소 침습적이고 비교적 쉽고 간단하여 급성 또는 재발성 슬개골 탈구의 치료에 있어서 효과적인 술식으로 생각된다.

• 대한안전경영과학회지
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• 제15권4호
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• pp.261-267
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• 2013

In automobile company it is needed to establish the collaborative relationship between the assembly company and the part manufacturing company. In this paper we established the improvement for the procurement logistics and logistics in assembly company and thus we derived the near optimal procurement cycle through the simple EXCEL simulation and the improved inventory management method for H automobile company in CHINA. At this time we adopted the pull manufacturing process instead of push manufacturing process. We resulted that the manufacturing activity of both companies was stabilized and the usage of storage area in assembly company was reduced by 50%, especially it was reduced by 100% in the case of directly delivering the parts to assembly line through the third party logistics company.

• 설비공학논문집
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• 제15권5호
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• pp.346-351
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• 2003

This paper aims at suggesting design guidelines for a perimeter-less HVAC system that contributes energy savings. Perimeter-less HVAC system is one that relieves difficulties fuck as handling mixing loss, uneven radiative environment, and maintenance and repair. It prevents heat load gained through window and outdoor wall without modifying a previously equipped building skin system. In this paper, we performed several kinds of CFD (computational fluid dynamics) cases through numerical simulation to obtain an optimized perimeter-less design, and then we conducted a large-scale model experiment to see how the push-pull air flow would handle indoor heat to obtain an optimized perimeter-less design.

• International Journal of Air-Conditioning and Refrigeration
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• 제17권2호
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• pp.45-51
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• 2009

Three-dimensional numerical analyses of mechanical ventilation system in vent shaft of subway in operation are carried out in relation with the different air flow passage of vent shaft and two ventilation operation modes of push/pull, The ventilation characteristics of vent shaft with regard to the shape change are evaluated. And the air flow rate through the vent shaft by ventilation system is measured within subway in operation to assess the accuracy and applicability of the numerical analysis method. The decrease of air flow rate due to vent-shaft change are between 0.7 to 2.2% in the cases examined.

• Advances in concrete construction
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• 제7권3호
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• pp.191-201
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• 2019

Bamboo concrete bond behaviour is investigated through pullout test in this work. The bamboo strip to be used as reinforcement inside concrete is first treated with chemical adhesive to make the bamboo surface impermeable. Various surface coatings are explored to understand their water repellant properties. The chemical action at the bamboo concrete interface is studied through different chemical coatings, sand blasting, and steel wire wrapping treatment. Whereas mechanical action at the bamboo concrete interface is studied by developing mechanical interlock. The result of pullout tests revealed a unique combination of surface treatment and grooved bamboo profile. This combination of surface treatment and a grooved bamboo profile together enhances the strength of bond. Performance of a newly developed grooved bamboo strip is verified against equivalent plain rectangular bamboo strip. The test results show that the proposed grooved bamboo reinforcement, when treated, shows highest bond strength compared to treated plain, untreated plain and untreated grooved bamboo reinforcement. Also, it is observed that bond strength is majorly influenced by the type of surface treatment, size and spacing of groove. The changes in bamboo-concrete bond behavior are observed during the experimentation.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권6호
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• pp.1996-2011
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• 2021

To understand a trend is to explore the intricate process of how something or a particular situation is constantly changing or developing in a certain direction. This exploration is about observing and describing an unknown field of knowledge, not testing theories or models with a preconceived hypothesis. The purpose is to gain knowledge we did not expect and to recognize the associations among the elements that were suspected or not. This generally requires examining a massive amount of data to find information that could be transformed into meaningful knowledge. That is, looking through the lens of big-data analytics with an inductive reasoning approach will help expand our understanding of the complex nature of a trend. The current study explored the trend of well-being in South Korea using big-data analytic techniques to discover hidden search patterns, associative rules, and keyword signals. Thereafter, a theory was developed based on inductive reasoning - namely the hook, upward push, and downward pull to elucidate a holistic picture of how big-data implications alongside social phenomena may have influenced the well-being trend.

• 한국대기환경학회지
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• 제16권2호
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• pp.129-140
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• 2000

Simulation study has been carried out to analyze the air flow supplying from the heat pump system inside the tollgate booth by using the Phoenix computer simulation program. Through this simulation analysis we can find the problem of present tollgate booth in terms of air flow and recommend an improved model also simulate this model. Final results as follows; It was turned out that the fresh air conditioning is not provided to the worker effectively due to the improper location of inlet and outlet in the present tollgate booth in addition to that the air curtain system applied in the booth lowered air circulation from outside. The improved model was suggested first to increase the air curtain effect by downsizing the window and by installation of the air curtain suction line to reduce the induced outdoor air second to supply the fresh air to the worker directly by relocation of the inlet and outlet of supplying air. With these improved modifications better results have been reached in terms of air flow inside the booth. Next through the air flow simulation of outside booth the contaminated outdoor air has been easuily infiltrating into the booth through the window because of its rectangle shape. Stream like shape of booth has been proposed through the computer simulation as an alternative shape of tollgate booth for a new design.

• 한국정밀공학회지
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• 제27권11호
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• pp.63-71
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• 2010

FormFactors is one of the most critical design factors in early development of mobile phone, and proper selection of FormFactors is necessary for smoothness of product development and customer satisfaction. Especially, emergence of mobile convergence added so various functions besides its original call function that importance of selecting FormFactors has increased because multiform FormFactors are needed. However there is problem such as frequent change of decision making in existing process because established process picks out FormFactors sensibly and arbitrarily through idea pull and so forth. We proposed FormFactors selection process by Axiomatic Design, set approach method and block approach method for reasonable and systematical FormFactors selection. First of all, we set the purpose of mobile phone development, and it is examined by Axiomatic Design. FormFactors design matrix is deduced through this process, the numbers of axes and rails are proposed using set approach method, and then patterns of FormFactors are embodied by block approach method. Particularly process application was tried through case study of mobile phone development, and we ensured that new FormFactors can be presented to a designer by systematical verification if change of customer requirements occurs through our process.

• 사물인터넷융복합논문지
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• 제9권1호
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• pp.105-115
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• 2023

본 연구는 디지털 기술 수용을 통하여 이용자를 스포츠에 직접적인 참여 확대로 유도할 수 있는 방안을 모색하고자 한다. 2022년 7월 1일부터 8월 30일까지 사물인터넷(IoT)을 적용한 홈트레이닝 이용자를 대상으로 설문조사를 실시하였다. 설문 조사는 비대면 자기기입식 방법으로 129명이 참여하였다. 자료 처리는 IBM사의 SPSS 21.0 프로그램을 활용하여 빈도분석, 탐색적 요인 분석, 신뢰도 분석, 상관관계분석, 다중회귀분석, 3단계 매개회귀분석을 실시하였다. 연구 결과는 다음과 같다. 첫째, 홈트레이닝 PPM 모델과 스포츠 직접 참여의 관계에서 용이성은 매개효과가 나타났다. 불만족 요인에서 단순 기능성은 완전매개효과가 나타났고, 비효율성은 부분매개효과가 나타났다. 만족 요인에서 유희성과 경험 가능성은 완전매개효과가 나타났다. 계류 요인에서 개인 혁신성은 완전매개효과가 나타났다. 둘째, 홈트레이닝 PPM 모델과 스포츠 직접 참여의 관계에서 유용성은 매개효과가 나타났다. 불만족 요인에서 단순 기능성은 완전매개효과가 나타났고, 비효율성은 부분매개효과가 나타났다. 만족 요인에서 유희성과 경험 가능성은 완전매개효과가 나타났다. 계류 요인에서 개인 혁신성은 부분매개효과가 나타났다. 이러한 연구를 통하여 스포츠 산업이 NFT, 메타버스, 가상·증강현실 등 디지털 기술의 확대로 소비지출 확대와 경제성장에 기여하길 기대한다.