• 한국산학기술학회논문지
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• 제20권3호
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• pp.110-124
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• 2019

최근 몇 년 동안 병원의 과다 공급으로 인해 병원 관리가 어려워지면서 병원은 혁신적인 병원 경영을 도입하여, 고객 만족도를 높이고 있다. 이에 본 연구는 요양병원의 혁신성이 고객만족도에 미치는 영향에 대하여 병원의 내부역량과 입지전략의 매개효과를 중심으로 살펴 보았다. 연구의 대상은 서울 및 수도권 소재 요양병원 재원중인 환자 및 보호자 120명을 대상으로 선정하여 설문조사와 통계분석을 시행 하였다. 연구의 시사점은 다음과 같다. 첫째, 병원혁신성이 고객만족도에 유의한 영향을 주지 못하고 오히려 통계적으로 유의하지 않지만 부(-)의 영향을 미친다는 점에서 병원조직의 보수성 및 안정성에 대한 고객들의 기대를 확인할 수 있다. 일반기업과 달리 생명을 다루는 병원조직의 특성상 일반기업과 차별화된 병원조직 고유의 혁신성 측정도구 개발이 시급하다. 둘째, 혁신성이 내부역량과 입지전략에 미치는 영향력은 비슷했지만, 입지전략(${\beta}=0.357$)은 내부역량(${\beta}=0.283$)에 비해 고객만족도에 더 큰 영향력을 미치고 있음이 확인되었다. 요양병원의 경우 개원 시점부터 입지시장성, 교통인프라, 건물매력도, 의료집적성 등 입지요인에 근거하여 면밀한 준비가 선행되어야 한다는 점을 시사해 주고 있다. 셋째, 내부역량과 입지전략은 병원혁신성과 고객만족도 간의 관계를 완전매개하고 있음이 실증분석을 통해 확인되었다. 병원 혁신성은 유무형의 내부역량을 제고하고 있으며, 입지전략 수립을 위한 적극적 태도를 유도함으로써 고객만족도에 유의한 영향을 미치고 있음이 확인되었다.

• Journal of information and communication convergence engineering
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• 제8권2호
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• pp.228-233
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• 2010

In this paper, the iteration localization algorithm that NLOS signal is iteratively removed to get the exact location in the wireless sensor network is proposed. To evaluate the performance of the proposed algorithm, TDOA location estimation method is used, and readers are located on every 150m intervals with rectangular shape in $300m{\times}300m$ searching field. In that searching field, the error distance is analyzed according to increasing the number of iteration, sub-blink and the estimated sensor node locations which are located in the iteration range. From simulation results, the error distance is diminished according to increasing the number of the sub-blink and iteration with the proposed location estimation algorithm in NLOS environment. Therefore, to get more accurate location information in wireless sensor network in NLOS environments, the proposed location estimation algorithm removing NLOS signal effects through iteration scheme is suitable.

• 한국소음진동공학회논문집
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• 제26권2호
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• pp.172-178
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• 2016

The location template matching (LTM) method is a technique of identifying an impact location on a structure, and is often applied to structural health monitoring and large scale human-computer interface (HCI) systems. The LTM method utilizes a certain measure of similarity between two time signals. The correlation coefficient is most widely used for this purpose, and the group delay based method is recently proposed to improve the accuracy of finding the best matching pair of signals. In practice, one of key essential consideration for implementing the LTM method is to guarantee that a sufficient number of vibration modes must be contained in the measured signal, and yet the lower sampling rate is needed for a real-time implementation. In this paper, the properties of correlation coefficient and group delay with respect to the number of vibration modes are investigated. A few important results are obtained through extensive computer simulations and experiments. If the number of vibration modes contained in the measured signal is more than four it is sufficient for the correlation based LTM method, while the group delay based LTM method requires smaller number of vibration modes.

• 한국연초학회지
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• 제13권1호
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• pp.74-81
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• 1991

This study was conducted to find out physical and chemical characteristics of burley and flue-cured tobacco leaves followed by location, growing season and leaf position during the period 1985 to 1989. The locations of flue-cured tobacco were 7(65farms) and burley tobacco were 4(40 farms). 1. Flue-cured tobacco leaves The locations of Ch'unch'on and Suwon were higher nicotine and ether extract content, Taegu and Chinju were higher total nitrogen content but Chiniju was lower red color of cured leaves than that of other location. Nicotine content increased but total sugar content decreased during the period 1985 to 1989. Nicotine and total nitrogen content increased but crude ash decreased from lower leaf position to higher leaf position. Total sugar and ether extract content were variable followed by leaf position. 2. Burley tobacco leaves. The location of Ch'onju was higher ether extract content than that of others location, but there was no significant difference the others chemical component among location. Nicotine content and red color of cured leaves increased during the period 1985 to 1989. Nicotine, total nitrogen and ether extract content increased but decreased crude ash content and brightness of cured leaf from lower leaf position to higher leaf position.

• Journal of Electrical Engineering and Technology
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• 제10권6호
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• pp.2356-2363
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• 2015

Localization of lightning strike point (LSP) in the forest is modeled to mitigate the forest fire damage. Though forest fire ignited by lightning rarely happens, its damage on the forest is grievousness. Therefore, predicting accurate location of LSP becomes crucial in order to control the forest fire. In this paper, we proposed a new hybrid localization algorithm by combining the received signal strength (RSS) and the received signal strength ratio (RSSR) to improve the accuracy by mitigating the environmental effect of lightning strike location in the forest. The proposed hybrid algorithm employs antenna theory (AT) model of cloud-to-ground (CG) return stroke lightning channel to forecast the location of the lightning strike. The obtained results show that the proposed hybrid algorithm achieves better location accuracy compared to the existing RSS method for predicting the lightning strike location considering additive white Gaussian noise (AWGN) environment.

• 한국공작기계학회논문집
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• 제15권5호
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• pp.104-113
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• 2006

The main objective of this study is to investigate the effect of compounded welding by using acoustic emission (AE) signals and doing a source location for weld heat affected zone (HAZ) through tensile testing. This study was carried out an SWS 490A high strength steel for electric shield metal arc welding, SMAW; $CO_2$ gas metal arc welding, GMAW($CO_2$); and gas tungsten arc welding, GTAW/TIG. Data displays are based on the measured parameters of the AE signals, along with environmental variables such as time and load. For instance, Gutenberg-Richter magnitude-frequency relationship (G-R MFR) offers useful b-value in data analysis. Namely event identification, source location gives the X- and Y-coordinates of the AE source. And K-means clustering analysis by Euclidean distance confirmed that was powerful to source location. Generally, strength of welded metal zone was stronger than strength of base metal. As the result, confirmed certainly that fracture is produced in HAZ instead of welded metal zone from source location.

• 대한안전경영과학회지
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• 제10권1호
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• pp.91-105
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• 2008

Nowadays, circulation industry is taking charge of important role in improvement of competitive power on the manufacturing industry and public welfare increase of consumer, price stabilization, employment creation and so on. A lot of research have been progressing for formation of total circulation complex, but decision making for selection of location on some facility is only calculated the optimum value when correct data values are inserted. However, a lot of decision making is accomplished in situation that have little knowledge of objective and constraints and as real world is also evaluated inclusive of analyst's subjectivity about variable, indefinite and fuzzy part, so it is decreasing a reliability on evaluation result and complicating objective evaluation on various effect and negative impact. Accordingly, from under like this situation, this study is to develop location decision model of circulation complex using fuzzy theory from the intention for the most reasonable decision making in fuzzy situation based on decision making problem on conventional location and size decision that did to be satisfactory constraints necessarily.

• 조명전기설비학회논문지
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• 제29권10호
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• pp.39-46
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• 2015

REMICON(Ready Mixed Concrete), the most essential material of construction work, is produced from facility called "Batcher plant." In order to produce Remicon, Batcher Plant needs to be supplied with basic raw material such as ballast, sand, cement, admixture and water. In remicon industry, overland transport vehicles are used during the whole manufacturing process from producing to infilling at the construction site. Thus, the transportation cost sums up be to 20 percent of whole manufacturing cost and transport capacity and distance travelled have direct and major effect on manufacturing costs. This paper suggests a method to find optimal location of batcher plant using modified Steiner point, suggesting the most effective and flexible connection through among construction site, aggregate, cement and remicon producing plant. This paper also proposes reducing of transport cost at maximum 60% by calculation through optimized plant location. The modified Steiner point theory proposed in this paper also can be applied to optimal location of a $2^{ry}$ substation or MCC panel for minimizing of power loss, voltage drop, line distance and etc.

• 벤처창업연구
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• 제11권2호
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• pp.207-219
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• 2016

벤처기업은 새로운 아이디어와 기술을 가지고 새로운 사업에 도전하는 고수익과 고위험을 특징으로 하는 기술 집약적 신생기업을 말한다. 이러한 벤처기업은 국가산업 경쟁력에 미치는 파급효과가 크고, 저성장의 어려움을 극복할 수 있는 새로운 산업으로 부각되었으며, 지역개발전략에도 중요한 요소로서 도시경제 활성화 뿐 아니라 낙후된 도시의 재생과 활성화에 큰 영향으로 그 중요성을 인정받고 있다. 본 연구는 안양시 도시개발의 활성화를 위하여 벤처기업의 입지 요인을 바탕으로 안양시 도시개발전략을 매개로 만족도에 미치는 영향을 규명하고, 경험적으로 벤처기업의 입지요인이 만족도와의 관계에서 안양시 도시개발전략의 조절효과를 분석하고자 한다. 분석방법은 설문지를 배포하여 SPSS통계프로그램을 사용하여 분석하였으며, 그 결과는 다음과 같다. 벤처기업의 입지요인은 정부의 지원, 교통의 접근성, 벤처집적요인, 지원시설요인의 4개 요인으로 나타났으며, 분석결과 벤처기업입지요인은 만족도에 정(+)적인 영향을 미치는 것으로 나타났다. 둘째, 매개효과를 검증하기 위해 3단계 회귀분석을 사용한 결과 안양시 도시개발전략은 정(+)적인 영향을 미침으로서 조절효과가 규명되었다. 이러한 결과는 안양시의 만족도를 증가시키기 위해서는 물리적인 환경요소뿐 아니라 도시개발전략을 세우는 것이 필요하다.

• Journal of the Korean Wood Science and Technology
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• 제41권4호
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• pp.318-326
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• 2013

소나무와 스프루스재를 사용하여 핑거공차를 0.15 mm로 고정하고 핑거피치 4.4 mm (Type S)와 6.8 mm(Type L)의 2종류 및 레조시놀 페놀 수지 접착제 및 수용성 비닐 우레탄 수지접착제로 2종류의 사용하여 종접합시키고 또한 2본의 종접합재를 이용하여 횡방향으로 핑거접합부를 양쪽으로 이동시키면서 접착하여 핑거접합부위의 배치거리를 접합재의 두께를 기준으로 하중점 중앙으로부터 양쪽 핑거접합부까지의 거리를 접합재 두께의 비율($R_t$) 0, 1.5, 2, 2.5, 3배의 5조건으로 제조하여 3점 중앙집중식 휨강도성능시험을 한 결과는 다음과 같다. 1) 휨탄성계수는 핑거접합부의 위치 이동과 관계없이 접착제의 종류, 핑거의 형상에 따른 영향은 나타나지 않았다. 2) 휨강도는 접착제의 종류, 핑거의 형상에 관계없이 하중점 중앙에서부터 멀어질수록 거의 직선적으로 증가하였으며 핑거접합부가 소재두께 비율의 3배에서는 소재와 같은 값을 나타내었다. 3) 시험편의 파괴는 하중점 중앙에서부터의 핑거접합부까지의 거리가 두께의 비율이 0, 1.5배에서 모두 핑거접합부에서 파괴되었으며 거리가 멀어질수록 접합부에서의 파괴가 적게 일어나다가 두께비율의 3배에서는 전혀 나타나지 않았다.