• 한국프랜차이즈경영연구
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• 제3권1호
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• pp.92-110
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• 2012

최근 경제적 불안과 실업율의 증가 등의 사회적인 문제로 인하여 창업시장의 수요가 증가 하는 가운데 청년창업 지원방안, 중기청 창업지원 계획 등의 정부의 창업 지원정책을 바탕으로 창업 시장은 지속적인 성장 추세를 보이고 있다. 이 같은 창업 시장의 확대에 힘입은 프랜차이즈 시장의 동반 상승이 예상되는 바, 프랜차이즈 시장에 대한 보다 현실적이고 구체적인 연구는 그 중요성이 점차 커질 것으로 사료된다. 본 연구에서는 가맹희망자의 브랜드 선택에 있어 기존에 선행연구를 개선하여 브랜드 선택에 영향을 미지는 선행 변수로 브랜드이미지, 본사의 지원, 창업비용, 정보탐색활동으로 보고 브랜드 선택에 영향을 미치는 요인을 규명하였으며, 그 결과는 다음과 같다. 첫째, 첫째, 창업업종 연령, 성별, 결혼여부에 따라 브랜드 이미지에 대한 생각 및 창업가능성에는 차이가 있다. 둘째, 예비창업자의 가맹계약의향에 있어 가장 중요한 요소는 경제적 특성이다. 브랜드 이미지 및 가맹지원, 정보탐색활동은 가맹희망자에게 있어 큰 영향을 미치는 속성으로 보기는 어려우며, 오히려 가맹점을 운영하는데 드는 비용(초기 창업비용 및 자기자본과의 일치성, 홍보비용, 운영자금, 시설/장비 재투자 등)이 중요한 속성인 것으로 나타났다. 특히 초기 창업비용과 자기자본과의 일치성은 가맹희망자에게 있어 가장 중요한 요인인 것으로 나타났다.

• Structural Engineering and Mechanics
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• 제73권2호
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• pp.191-207
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• 2020

This study aims at investigating the size-dependent free vibration of porous nanoplates when exposed to hygrothermal environment and rested on Kerr foundation. Based on the modified power-law model, material properties of porous functionally graded (FG) nanoplates are supposed to change continuously along the thickness direction. The generalized nonlocal strain gradient elasticity theory incorporating three scale factors (i.e. lower- and higher-order nonlocal parameters, strain gradient length scale parameter), is employed to expand the assumption of second shear deformation theory (SSDT) for considering the small size effect on plates. The governing equations are obtained based on Hamilton's principle and then the equations are solved using an analytical method. The elastic Kerr foundation, as a highly effected foundation type, is adopted to capture the foundation effects. Three different patterns of porosity (namely, even, uneven and logarithmic-uneven porosities) are also considered to fill some gaps of porosity impact. A comparative study is given by using various structural models to show the effect of material composition, porosity distribution, temperature and moisture differences, size dependency and elastic Kerr foundation on the size-dependent free vibration of porous nanoplates. Results show a significant change in higher-order frequencies due to small scale parameters, which could be due to the size effect mechanisms. Furthermore, Porosities inside of the material properties often present a stiffness softening effect on the vibration frequency of FG nanoplates.

• 한국산학기술학회논문지
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• 제13권4호
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• pp.1908-1914
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• 2012

풍력발전기의 용량이 점차 대형화되고 해상풍력단지는 수심이 깊은 곳에 조성됨에 따라 해상풍력발전구조물의 하부구조 및 기초시공비용 또한 급격히 증가될 것으로 예상된다. 석션버켓기초는 버켓형식의 기초를 자중에 의한 관입과 자중관입 이후 석션에 의한 관입으로 설치하는 공법이며, 대형장비 대신 충분한 용량의 펌프만 있으면 기초의 시공이 가능하므로 시공이 간편하고 경제적인 공법으로 알려져 있다. 본 연구에서는 석션버켓기초의 경제성을 검토하기 위하여 상부지반이 사질지반과 연약지반인 경우일 때 대수심 조건에 적용 가능한 기초형식인 자켓과 석션버켓기초를 적용한 트라이포드의 시공비용을 비교하였다. 그 결과 지반이 단단하고, 기초개수가 증가할수록 자켓형식보다는 트라이포드 버켓기초형식을 적용하는 것이 더 경제적임을 확인하였다.

• 한국응급구조학회지
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• 제19권3호
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• pp.19-32
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• 2015

Purpose: This study examined the effect of wearing personal protective equipment (PPE) on cardiopulmonary resuscitation (CPR), positive airway pressure, and the posture of emergency medical technicians (EMTs) when conducting CPR. Methods: Twenty 119 EMTs performed 30:2 CPR on a manikin for 4 min. Imaging data were digitized with Kwon3D XP (version 4.0). Data were collected by analyzing the motion when starting in one cycle, such as pressing to the maximum and in the final position (relaxed), and were analyzed with SPSS 18.0. Results: The angle of the elbow joints was significantly reduced (p < .05). The trunk angle was statistically significantly (p < .01, p < .001) increased. The angular velocities of the shoulder joint and left elbow joint were reduced (p > .05). The angular velocity of the trunk was significantly reduced in the starting and maximum compression postures. The hand-escape time was increased. The average compression depth was increased but not significantly (p > .05). The positive airway pressure was reduced (p > .05). Conclusion: The angle of the elbow joints and the angular velocity of the trunk were reduced, and the angle of the trunk was increased. The success of CPR and positive airway pressure was reduced.

• 대한통합의학회지
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• 제8권3호
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• pp.33-41
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• 2020

Purpose : Conventional Balance Measurement can only measure the center of gravity and the shaking movement of the body. As a result, it has the disadvantages of not responding to visual changes and blocking functions of variables. This study was carried out to evaluate the performance of new equipment that measures the balance of the body using changes in body segment and pressure using the acceleration sensor to compensate for the disadvantages of the existing equipment. Methods : To this end, balance ability was measured in 43 healthy male/female adults without orthopedic injuries and nervous system damage in the last 6 months. in a situation where the visual information was restricted by Virtual Reality (VR) gear, all subjects measured and evaluated the balance ability utilizing the new equipment. Balance measurement (Prime Medilab, Korea) and Wii fit (Nintendo, Japan) were used to measure the balance ability of the subjects, and the balance ability test was performed in 4 postures using each device for data acquisition. The test duration for each posture was 30 seconds. For data acquisition, the average value of three experiments measured using each equipment was analyzed, and the statistical test was performed using the independent sample and the corresponding sample t-test, and the significance level was set to α=.05. Results : As a result of measuring the balance ability using individual equipment, blocking visual information using VR gear, the average speed, maximum speed, and moving area of the COP increased equally. It was found that the obtained absolute size of the result in Wii was somewhat larger than that of BM. Conclusion : It is considered that in the future research, it is necessary to measure changes in the body's center of gravity through image analysis, etc., to make clear comparison and evaluation of the usability.

• 한국멀티미디어학회논문지
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• 제23권9호
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• pp.1171-1180
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• 2020

The number of the PV systems installed in south korea has been gradually increasing. Interest of operation & management of PV System is rising up as PV System installation trends to increase. The vital function of operation & management is the monitoring system. Most monitoring systems are only available for equipment of suppliers and manufacturers. In this study, a monitoring system was implemented to support multi-domain equipment (inverter, junction box, water distribution board, environmental sensors) that are not limited to specific manufacturers. Monitoring system includes a visualization function, which makes it easy for users to check the power generation and the operation status of the equipment of PV System. In the future, this monitoring system will be utilized as an operation & maintenance foundation element in the PV system industry.

• International Journal of Naval Architecture and Ocean Engineering
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• 제7권1호
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• pp.142-156
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• 2015

A new method for ship Inner Shell optimization, which is called Parametric Inner Shell Optimization Method (PISOM), is presented in this paper in order to improve both hull performance and design efficiency of transport ship. The foundation of PISOM is the parametric Inner Shell Plate (ISP) model, which is a fully-associative model driven by dimensions. A method to create parametric ISP model is proposed, including geometric primitives, geometric constraints, geometric constraint solving etc. The standard optimization procedure of ship ISP optimization based on parametric ISP model is put forward, and an efficient optimization approach for typical transport ship is developed based on this procedure. This approach takes the section area of ISP and the other dominant parameters as variables, while all the design requirements such as propeller immersion, fore bottom wave slap, bridge visibility, longitudinal strength etc, are made constraints. The optimization objective is maximum volume of cargo oil tanker/cargo hold, and the genetic algorithm is used to solve this optimization model. This method is applied to the optimization of a product oil tanker and a bulk carrier, and it is proved to be effective, highly efficient, and engineering practical.

• Journal of Construction Engineering and Project Management
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• 제1권3호
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• pp.45-51
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• 2011

During disaster response, prioritization of limited resources is one of the most important but challenging tasks. At the same time, it is imperative to timely provide to the rescuers with the adequate heavy equipment to facilitate lifesaving operations. However, supply of high demand equipment is usually insufficient during the initial phase of disaster response, challenging lifesaving operations. At the same time, resources outside of the disaster affected zone converge into the area to assist the response efforts, which is the effect of convergence that often made resource coordination challenging in large scale disasters. Meanwhile, the initial condition of the disaster is usually best known by civilians already at the area before and during impact of the disaster. The knowledge of the civilians is not always received and considered by the responding organizations. With the help of these civilians, critical information such as victim location, infrastructure damage, and risk condition could be better know before any response actions are taken. To efficiently collect information and utilize the converging resources, this paper proposes a geospatial information repository for initial condition reporting and update to guide search and rescue operations and deployment of equipment with safety considerations for the rescuers in large scale disaster response scenarios.

• 한국전자거래학회지
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• 제25권2호
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• pp.127-146
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• 2020

해외 선진국은 연구장비의 중요성을 인식하고 연구장비 산업 활성화를 위해 많은 정책적 지원을 하고 있다. 그러나 우리나라는 연구장비산업 활성화를 위한 정책이나 관련 사업을 지원할 수 있는 법률이 없다. 따라서 연구장비산업 활성화를 위한 정책과 사업을 지원하기 위한 입법이 시급하다. 연구장비산업의 글로벌 시장에서 경쟁력을 확보할 수 있도록 별도의 연구장비산업 활성화 특별법을 제정할 필요가 있다고 판단된다. 본 바와 같이 연구장비 산업 육성을 위한 다양한 진흥정책이 개발될 수 있도록 관련 법률에 필요한 사항을 명시해야 한다. 연구장비 산업발전을 촉진하기 위해서는 법에 명시해야 할 필수항목이 세 가지다. 첫째는 연구개발 지원, 둘째는 인프라 개발, 셋째는 비즈니스 육성이다. 각 내용에는 다음과 같은 내용이 포함되어야 한다. 우선 '연구개발 지원'에는 연구개발사업 추진 및 지원 정책항목, 연구장비 개발동향 및 투자동향, 산학관 공동연구, 융·복합·사업화를 위한 연구개발 지원 등이 포함된다. 다음으로 '인프라 개발' 포함될 항목에는 연구장비 클러스터 구축, 관련 지원항목, 전문인력 양성, 연구장비개발기반지역 및 기관 등이 포함되어야 한다. 마지막으로 '사업 육성'에 포함되어야 할 항목은 우수기업 육성 지원사항(우선구매제도 등), 기술이전 및 마케팅 관련 사항, 지식재산 보호에 관한 사항, 해외진출 촉진에 관한 사항 등이다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.825-839
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• 2010

The global and domestic market for offshore wind farm is expected to grow fast, and the design and installation of substructure and foundation is getting more important. As for the offshore wind farms located in the shallow(depth < 20m) water, the construction and installation of the substructure and foundation makes up about 1/4 ~1/3 of the offshore wind farm construction cost, and the portion is expected to increase because the turbine capacity is increasing from 2 ~ 3MW to 5MW or larger and the water depth of wind farms is also increasing over 30m. As a foundation for offshore wind turbine, the suction caisson foundation is being considered to be a highly competitive alternative to the conventional monopile or gravity based structure, because it has features suitable for the offshore construction such as quick installation, no heavy equipment for penetration and no hammering noise for driving. In order to study the installation behaviour of the suction caisson, laboratory tests were performed with sand. The pore water pressure and displacement were measured to analyze the suction pressure during penetration, the penetration speed and the amount of heaving.