• 가정과삶의질연구
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• 제21권3호
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• pp.101-107
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• 2003

The purpose of this study was to find out the push and pull factors of migrants from middle Asian countries to Yunhaju, Russia, and housing situations in settlements as well as housing intentions to behave. Four female Korye Saram in Cremobo settlement and Woojung village and 10 male and female elderly in ordinary residences were interviewed during April 22-25, 2003. Changes in national formal language from Russian to lout languages was played the most prominent push role, while availability of settlement and agricultural land and emotional attachment as the second hometown pulled them to migrate into Yunhaju. The housing situation in Cremobo settlement was very poor and almost settlers had already left. The rest settlers wanted to move into Woojung village. The resident in Woojung village hoped to get the formal contract to rent the dwelling and agricultural land. Family adaptations were progressed to solve the housing deficits among settlers both of Cremobo settlement and Woojung village. This research explored a part of the 140 years residential history of Korye Saram.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 가을 학술발표회 논문집(II)
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• pp.983-988
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• 2000

Anchoring systems with structural stability and endurance have been one of the most important elements for PSC structures, especially for the structures using non-corrosive FRP tendons. FRP tendons are in increasing use for underground and coastal structures constantly contacted with fresh water or sea water because of their superiority to metallic ones in corrosion-resistance. In this study new non-metallic anchoring system for FRP tendons has been tested and investigated. The newly developed anchoring system utilizes FRP pipes and HEM (Highly Expansive Mortar). The major factors considered in this experiment were expansive pressure of HEM during its hydration and the strength of GFRP(Glass Fiber Reinforced Plastic) Pipe. Anchoring forces of the new anchoring system were investigated from the pull-out testes. The authors analyzed pull-out procedures of the FRP tendons in the various pipe filled with HEM and suggested an improved idea to develop novel non-metallic anchoring system for FRP tendons

• 산업융합연구
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• 제20권12호
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• pp.11-25
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• 2022

본 연구에서는 블록체인이 적용된 공급망관리 정보시스템으로 전환의도에 영향을 미치는 요인을 검증하고자한다. 이를 위해 선행연구의 고찰을 통해 변수 선정 및 연구모형을 구성하고, TOE 프레임워크와 PPM 모델을 활용해 실증분석을 시행하였다. Push 요인, Pull 요인이 블록체인 시스템 전환의도에 미치는 영향 및 Mooring 요인인 전환비용을 통한 조절효과를 검증하였다. 국내에 소재한 중소기업을 대상으로 설문을 하여 320개 응답 자료를 표본으로 구조방정식 모형을 사용해 가설을 검증하였다. 연구 결과 Push 요인인 사회적 영향과 Pull 요인인 경영진의 혁신의지가 전환의도에 유의미한 영향을 미쳤다. 그리고 전환비용 인식 수준이 높고 낮은 집단 간 조절효과를 확인하였다. 본 연구는 블록체인 기반 공급망관리 정보시스템의 구현을 통한 기업의 경쟁력을 제고시킬 수 있는 SCBM(supply chain & blockchain management)의 개념 및 연구 방향을 제시하였다는 점에 의의가 있다.

• 경영정보학연구
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• 제21권4호
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• pp.99-123
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• 2019

지식 정보화 시대에 대표적인 고부가가치 산업으로서 소프트웨어 산업에 대한 중요성이 증대되고 있으며, 그 중에서도 오픈소스 소프트웨어는 소스코드 공개, 자유로운 수정과 배포, 공급업체에 대한 의존성 탈피, 비용 절감과 같은 이점을 바탕으로 빠르게 활동 영역을 확장해가고 있다. 특히, 오픈소스 소프트웨어는 클라우드, 사물인터넷, 인공지능, 빅데이터 등과 같은 새로운 정보기술과 접목하여 활용도가 높을 것으로 예상되고 소프트웨어의 신기술 발전을 주도할 수 있다는 점에서 다양한 긍정적인 효과를 얻을 수 있을 것으로 전망되고 있다. 글로벌 IT 기업들은 이러한 오픈소스 소프트웨어를 비즈니스 혁신을 위해 적극적으로 활용하고 있으며 국내에서도 오픈소스 소프트웨어를 활성화하기 위한 관련정책과 기업들의 노력이 이어지고 있다. 오픈소스 소프트웨어가 주목 받음에 따라 이와 관련된 연구도 활발하게 진행되고 있으나 조직들이 어떠한 이유로 기존의 비공개 소프트웨어에서 오픈소스 소프트웨어로 전환하게 되는가에 하는 연구는 미비한 실정이다. 이에 본 연구는 인간의 이주행동을 설명하는데 유용한 이론적 틀로 알려진 Push-Pull-Mooring 프레임워크를 기반으로 오픈소스 소프트웨어로의 전환에 영향을 미치는 요인들을 제안하고 그 관계를 실증분석을 통해 확인하고자 하였다. 이를 위해 관련 기업에서 수집된 총 268부를 바탕으로 본 연구에서 제안한 연구모형의 가설을 검증하였다. 연구결과, push 요소인 지속적 유지비용, 벤더 의존성, 기능적 무차별성, SW 자원의 비효율성, 그리고 pull 요소인 네트워크 기반지원, 시험 가능성, 전략적 유연성이 오픈소스 소프트웨어 전환에 유의미한 영향을 미치는 것으로 나타났지만, 지식수준향상은 유의 하지 않은 것으로 판명 되었다. 또한, Mooring 효과로 관리자의 SW 경쟁력 확보의지는 push와 pull요소 중 지식수준향상과 OSS 전환 관계를 제외한 모든 관계를 강화시키는 것으로 나타났다. 본 연구의 결과는 오픈소스 소프트웨어에 대한 연구를 확장할 수 있는 기반을 제공하고 관련 기업들에게 OSS로의 전환에 대한 유용한 정보를 제공할 수 있을 것이다.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1364-1369
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• 2009

The building construction projects include a variety of risk factors due to uncertainties. To succeed in the projects, it is important how risks are managed. Risk management is composed of identification, analysis and response. Especially, the risk analysis is important to objectively calculate significance of risk factors. This paper evaluates a method to find priorities of risks using the AHP(Analytic Hierarchy Process). The method has some defects; (1) the consistency becomes weak as the number of pair-wise compared risks is large, and (2) the input and output procedures are complex when risks are added to or removed from a risk database. Thus the paper adopt the PROMETHEE(Preference Ranking Organization METHod Enrichment Evaluations) analysis process which is able to overcome the limitation of the AHP restricted to 9 risk factors. The PROMETHEE method makes the procedure of risk analysis simple, when the risk factors pull out and put in the risk database. The purpose of this study is to prove the possibility of the PROMETHEE analysis process by being compared with AHP.

• 한국운동역학회지
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• 제26권4호
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• pp.369-375
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• 2016

Objective: The purpose of this study was to investigate the possibility of injuries and the types of movement related to damage by body parts, and to prepare for prevention of injuries and development of a training program. Method: For this study, the experiment was conducted according to levels of 60 percentages (ST) and 85 percentages (MA) and 10 subjects from the Korean elite national weightlifting team were included. Furthermore, we analyzed joint moment and muscle activation pattern with three-dimensional video analysis. Ground reaction force and EMG analyses were performed to measure the factors related to injuries and motion. Results: Knee reinjuries such as anterior cruciate ligament damage caused by deterioration of the control ability for the forward movement function of the tibia based on the movement of the biceps femoris when the rectus femoris is activated with the powerful last-pull movement. In particular, athletes with previous or current injuries should perceive a careful contiguity of the ratio of the biceps femoris to the rectus femoris. This shows that athletes can exert five times greater force than the injury threshold in contrast to the inversion moment of the ankle, which is actively performed for a powerful last pull motion and is positively considered in terms of intentional motion. It is activated by excessive adduction and internal rotation moment to avoid excessive abduction and external rotation of the knee at lockout motion. It is an injury risk to muscles and ligaments, causing large adduction moment and internal rotation moment at the knee. Adduction moment in the elbow joint increased to higher than the injury threshold at ST (60% level) in the lockout phase. Hence, all athletes are indicated to be at a high risk of injury of the elbow adductor muscle. Lockout motion is similar to the "high five" posture, and repetitive training in this motion increases the likelihood of injuries because of occurrence of strong internal rotation and adduction of the shoulder. Training volume of lockout motion has to be considered when developing a training program. Conclusion: The important factors related to injury at snatch include B/R rate, muscles to activate the adduction moment and internal rotation moment at the elbow joint in the lockout phase, and muscles to activate the internal rotation moment at the shoulder joint in the lockout phase.

• 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.

• 사회복지연구
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• 제43권2호
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• pp.141-178
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• 2012

우리나라 노동시장은 자영업의 비중이 크고 연령집단에 따라 자영업 비중의 차이가 크지만, 경기변동이 자영업 이행에 미치는 영향의 연령집단별 차이에 대한 연구는 미흡하다. 이에 본 연구는 한국노동패널 5~11차 자료를 활용하여 구축가설과 유인가설을 중심으로 분석하였다. 분석결과, 실업률이 높을수록 자영업 이행률이 높아져 구축가설을 지지한다. 기업가 정신의 발현보다는 노동시장여건의 악화로 자영업으로 밀려난 것으로 볼 수 있다. 연령집단별로 보면, 청년층에 비해 30대와 40대의 자영업 이행률이 높다. 경제활동이 왕성한 30~40대가 주변부 노동시장에 진입할 확률이 높아서, 자영업이 특정 연령계층의 문제가 아님을 알 수 있다. 또한 40대의 자영업 이행은 직업기회가 제한될 때 급증하여, 경기불황에 자영업으로 밀려가는 것으로 나타났다. 40대의 고용이 경기변동에 취약한 것을 말해준다.

• Computers and Concrete
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• 제21권3호
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• pp.249-259
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• 2018

The use of recycled aggregate in concrete is gaining much attention due to the growing need for sustainability in construction. In the present study, Self Compacting Concrete (SCC) is made using both natural and recycled aggregate (crushed recycled concrete aggregate from building demolished waste) and performance of recycled aggregate based SCC for the bond behaviour of reinforcement is evaluated. The major factors that influence the bond like concrete compressive strength (Mix-A, B and C), diameter of bar ($D_b=10$, 12 and 16 mm) and embedment length of bar ($L_d=2.5Db$, $5D_b$ and full depth of specimen) are the parameters considered in the present study in addition to type of aggregates (natural and recycled aggregates). The mix proportions of Natural Aggregate SCC (NASCC) are arrived based on the specifications of IS 10262. The mix proportions also satisfy the guidelines of EFNARC. In case of Recycled Aggregate SCC (RASCC), both the natural coarse and fine aggregates are replaced 100% by volume with that of recycled aggregates. These mixes are also evaluated for fresh properties as per EFNARC. The hardened properties like compressive strength, split tensile strength and flexural strength are also determined. The pull-out test is conducted as per the specifications of IS 2770 (Part-1) for determining the bond strength of reinforcement. Bond stress versus slip curves were plotted and a typical comparison of RASCC is made with NASCC. The fracture energy i.e., area under the bond stress slip curve is determined. With the use of recycled aggregates, reduction in maximum bond stress is noticed whereas, the normalised maximum bond stress is higher in case of recycled aggregates. Based on the experimental results, regression analysis is conducted and an equation is proposed to predict the maximum bond stress of RASCC. The equation is in good agreement with the experimental results. The available models in the literature are made use to predict the maximum bond stress and compare the present results.

• 한국지진공학회논문집
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• 제13권1호
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• pp.9-16
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• 2009

철근 콘크리트 부재에서 부착강도는 콘크리트와 보강근 사이에 중요한 요소 중 하나이다. 본 연구는 인발실험을 통해 AFRP 보강근의 부착강도에 대하여 실험하고, AFRP 보강근과 이형철근의 부착특성을 비교하여 나타내었다. 묻힘 길이와 보강근의 직경이 실험의 변수로 사용되었으며, 실험을 통해서 AFRP 보강근의 부착응력-미끌림 관계 및 파괴양상을 평가하였다. AFRP 보강근의 부착응력-미끌림 관계는 이형철근과 비슷한 양상을 보였으며, 보강근의 직경이 증가할수록 인발하중은 증가하나 부착응력은 비슷한 결과를 보였다. AFRP 보강근의 부착강도는 이형철근의 약 54%에 달하는 것으로 나타났다.