• Steel and Composite Structures
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• 제17권2호
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• pp.199-213
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• 2014

The damage characters of scarf repaired composite laminates subjected to low-velocity impact with various energy levels at different locations are studied experimentally. The results are compared with those of the original laminates which have no initial damage and don't need repair. The impact load-time history of the specimens, the velocity-time curves of the impactor, the post impact compressive strength of the specimens and the C-scan photographs of the damaged regions are obtained. The delamination threshold load and damage character of the specimen section at impact point are also studied. The results have shown that the impact response of a repaired composite laminate is sensitive to the location of the impact. The impact load and the delamination threshold load have shown different characters for specimens with different impact locations. The debonding characters of the adhesive and compressive strength after impact of the specimens are also influenced by impact locations.

• 환경영향평가
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• 제16권4호
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• pp.285-300
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• 2007

The purpose of this study was to ascertain the ecological state and problems of eco-bridges on Korean roads. The study was conducted from March to April 2007 by checking ecological factors and wildlife around the eco-bridges and habitats. 8 representative eco-bridges were selected by their bridge shape and condition of location. After field survey, we analyzed ideal trails for wildlife using field data, digital topology maps, satellite images, and land use map. In addition to trail analysis, we identified the propriety of the eco-bridges through Population Viability Analysis. Because of unsuitable location and management, we found that most of the bridges are not proper for wildlife dispersal. Moreover, in some habitats, we could expect that some local populations might be extinct without appropriate treatments.

• 산업기술연구
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• 제8권
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• pp.3-11
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• 1988

Shock pressure of wave breaking on vertical wall is studied experimentally with beaches, which have four different slopes (1/4.02, 1/7.05, 1/10, 1 /13.5). This results is summerized as follows: 1. Maximum impact presures are occured where the wave break directly on the wall rather than breaking in front of the wall. 2. Deep water steepness, and the beach slope are the two Quantities governing the magnitude and location of maximum dimensionless impact pressure from wave breaking directly on the wall, also, the greatest pressure is produced with a beach slope of 1/10. 3. This study is clearly shown that the location of maximum pressure can be presented above still water level under respectively experimental condition. The dimensionless elevation of maximum Pressure is greatest on a beach slope of 1/10.

• 품질경영학회지
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• 제38권3호
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• pp.322-332
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• 2010

In this study, the effectiveness of the warning signs was investigated. n order to survey, adult men and women surveyed 131 peoples. Findings are as follows. Warning level, warning statements, warning size, warning location, warning color is influenced consumers' perception level. However, the location of warning labels, the number of alerts, warnings, symbol type, fonts had no impact on the level of perception. In addition, Awareness have a positive impact on repurchase intention and recommend intention.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.841-844
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• 2002

The vertical impact crusher is the machine which could produce artifical sand similar to natural aggregates in the site of guarry and pits. FEM was used to analyse the stress and strength of the machine at high rotational speed. The test specimen was made from the same material as the shaft and tension tests were conducted. The shaft under extreme conditions was analysed to determine maximum stress level and its location from the results. The maximum level of stress and its location could be predicted.

• 환경영향평가
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• 제15권1호
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• pp.45-52
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• 2006

The purpose of this study is to assess spatiotemporal variation of coastal water quality according to time and location changes. For this we developed numerical marine trophic index base on four water quality components (chlorophyll, suspended solids, dissolved inorganic nitrogen and phosphorus) and applied this index to the water quality data measured in the korean coastal zone for the 7-years period from 1997 to 2003. Water quality data are obtained only at selected sites even though they are potentially available at any location. Therefore, in order to estimate spatial variation of coastal water quality, it is necessary to estimate the unknown values at unsampled locations based on observation data. In this study, we used IDW (Inverse Distance Weighted) method to predict water quality components at unmeasured locations and applied marine trophic index to predicted values obtained by IDW interpolation. The results of this study indicate that marine trophic index and spatial interpolation are useful for understanding spatiotemporal characteristics of coastal water quality.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2004년도 춘계학술대회
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• pp.211-220
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• 2004

The vertical impact crusher is the machine which could produce artifical sand similar to natural aggregates in the site of guarry and pits. FEM was used to analyse the stress and strength of the machine at high rotational speed. The test specimen was made from the same material as the shaft and tension tests were conducted. The Shaft under extreme conditions was analysed to determine maximum stress level and its location from the results. The maximum level of stress and its location could be predicted.

• 전기학회논문지
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• 제66권12호
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• pp.1705-1711
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• 2017

This paper analyzes the impact of DRA (Demand Response Aggregator) on market power when competing with power generation companies (Gencos) in the electricity market. If congestion occurs in the transmission line, the strategic choice of the power generation company increases exercise of market power. DRA's strategic reduction of power load impacts the strategy of Gencos, which in turn affects the outcome of the load reduction. As the strategy of Gencos changes according to the location of the congested transmission line, the impact on the market depends on the relative location of the congested line and the DRA.

• 한국경제지리학회지
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• 제15권4호
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• pp.660-675
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• 2012

본 연구는 미국 내 한인 이주민을 대상으로 이주경험 및 주거실태, 주거입지 선호의 특성을 분석하고, 이를 통해 이주민의 개별 특성이 주택 소유구조와 주거입지 선호에 미치는 영향을 밝히는 것을 목적으로 한다. 이러한 연구목적을 달성하기 위해 워싱턴 주에 거주하는 한인 이주민을 대상으로 설문조사를 하였으며, 설문결과를 토대로 이항로짓모형을 연구방법으로 활용하였다. 연구결과를 요약하면 다음과 같다. 첫째로, 응답자들의 주택 소유구조를 보면, 응답자들은 연령이 높을수록, 소득수준이 높을수록, 이주기간이 길수록 자가주택에 거주하는 경향을 보이는 것으로 나타난다. 둘째로, 응답자들이 선호하는 주거 입지요인으로는 치안, 자연환경, 직장근접, 학군 등 환경/쾌적성, 학군인 것으로 나타난다. 셋째로, 응답자의 개별특성이 주택 소유구조에 미치는 요인에 대한 이항로짓 회귀분석 결과, 가구소득이 높을수록 자가주택 보유율이 통계적으로 유의한 수준으로 상승하는 것으로 나타난다. 넷째로, 응답자의 개별특성과 주택 소유구조가 응답자의 입지선호도에 미치는 영향에 대한 이항로짓 회귀분석 결과, (1) 주거입지 요인으로 자가주택 소유자가 임대주택 소유자보다 학군을 선호하며, (2) 40대 이상의 연령대가 30대 이하의 연령대보다 안전/쾌적성을 선호하며, (3) 이주기간이 10년 이상인 응답자가 이주기간이 10년 미만인 응답자보다 안전/쾌적성을 선호하며, (4) 워싱턴 주 이외에 지역에 최초로 이주한 응답자가 워싱턴 주에 이주한 응답자보다 안전/쾌적성을 선호하는 것으로 나타난다.

• 한국의상디자인학회지
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• 제25권3호
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• pp.143-155
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• 2023

This study examined the effect of beauty service location characteristics and service quality on customer satisfaction and revisit intention, and analyzed the gender control effect of location characteristics and service quality in the relationship with customer satisfaction. The Statistical Package for the Social Sciences (SPSS) was employed and analysis was conducted to investigate how location characteristics and service quality in beauty service encounters effects customer satisfaction. The results of this study are as follows. First, visibility, which is a location characteristic, was found to have a significant effect on customer satisfaction. Second, professionalism and convenience, which are service qualities, were found to have a significant impact on customer satisfaction. Third, customer satisfaction was found to have a significant effect on the intention to revisit. Fourth, as a result of analyzing the gender control effect in the relationship between location characteristics and service quality with customer satisfaction, the gender control effect was found in all factors.