• 대한원격탐사학회지
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• 제27권3호
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• pp.303-314
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• 2011

Surface albedo is an important parameter of the surface energy budget, and its accurate quantification is of major interest to the global climate modeling community. Therefore, in this paper, we consider the direct solution of kernel based bidirectional reflectance distribution function (BRDF) models for retrieval of normalized reflectance of high resolution satellite. The BRD effects can be seen in satellite data having a wide swath such as SPOT/VGT (VEGETATION) have sufficient angular sampling, but high resolution satellites are impossible to obtain sufficient angular sampling over a pixel during short period because of their narrow swath scanning when applying semi-empirical model. This gives a difficulty to run BRDF model inferring the reflectance normalization of high resolution satellites. The principal purpose of the study is to estimate normalized reflectance of high resolution satellite (RapidEye) through BRDF components from SPOT/VGT. We use semi-empirical BRDF model to estimated BRDF components from SPOT/VGT and reflectance normalization of RapidEye. This study used SPOT/VGT satellite data acquired in the S1 (daily) data, and within this study is the multispectral sensor RapidEye. Isotropic value such as the normalized reflectance was closely related to the BRDF parameters and the kernels. Also, we show scatter plot of the SPOT/VGT and RapidEye isotropic value relationship. The linear relationship between the two linear regression analysis is performed by using the parameters of SPOTNGT like as isotropic value, geometric value and volumetric scattering value, and the kernel values of RapidEye like as geometric and volumetric scattering kernel Because BRDF parameters are difficult to directly calculate from high resolution satellites, we use to BRDF parameter of SPOT/VGT. Also, we make a decision of weighting for geometric value, volumetric scattering value and error through regression models. As a result, the weighting through linear regression analysis produced good agreement. For all sites, the SPOT/VGT isotropic and RapidEye isotropic values had the high correlation (RMSE, bias), and generally are very consistent.

• 한국주거학회논문집
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• 제7권2호
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• pp.1-7
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• 1996

This study was designed to examine the effects of housing values on housing satisfaction model. The empirical model of this study was based on the Goulart(1982). Data were collected through questionnaire survey, and the sample consisted of 285 households in Kimhae. Housing values were grouped into four clusters : the health and convenience value, the personal and social value, the location value, and the economic value. The major findings were that 1) the concordance between values and the actual housing conditions contributes significantly to the prediction of housing astisfaction, and 2) the control variables including sociodemographic and economic characteristics and housing values themselves did not directly influence on housing satisfaction.

• 한국병원경영학회지
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• 제24권1호
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• pp.57-76
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• 2019

The purpose of this study was to investigate the effect of characteristics of hospital choice and hospital service quality on service value, customer satisfaction and hospital revisiting intent and a survey involving patients and their caregivers who used the hospital before was conducted for empirical analysis. Thus, the theory and factors concerning the characteristics of hospital choice, hospital service quality, service value, customer satisfaction and hospital revisiting intent and relevant preceding research were explored after examining the preceding research, the research model was developed accordingly. A total of 459 collected questionnaires were analyze after carrying out the survey on a national scale. The findings of this study have significance since it identified the motivation that affect the choice of hospital and provide information. Also, this study could be utilized as reference data for hospitals to survive in the fierce competition, as it carried out factual survey on considerations when making choice of hospital. Furthermore, due to the low expectation of patients and caregivers for hospital administration, the study indicated that it's linked to a significantly low chance of customer satisfaction and provide the cause. This study was differentiated with other research on hospital choice since it selected security as a factor of hospital choice, though it's not discussed in the preceding research and moreover, conducted the empirical analysis. And the results of empirical analysis revealed that customers felt that service value was improved when the information security was strengthened. In other words, the strengthening of hospital information security could be hospital choice motivation, which means this study provided practical implication.

• 한국지반환경공학회 논문집
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• 제6권3호
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• pp.25-34
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• 2005

사질토상의 직접기초는 기초의 지지력보다 침하량이 기초의 설계에 있어 주요 지배요소이다. 침하량을 산정함에 있어 토질 특성치 중 표준관입시험 N치가 주된 요소이다. 그러므로, 침하량 예측시 장비 효율에 대한 적절한 N치의 보정이 이루어질 때 예측 침하량의 정확성이 확보된다. 특히, N치가 50/30이상인 지반의 경우 롯드의 30cm 관입시 타격수를 기록하는 것이 아니라 일반적으로 50회 타격시 롯드의 관입량으로 N치를 기록하고, 침하량 산정시 N치 50을 일률적용함으로 실측 침하량과 큰 오차를 보이게 된다. 이에, 본 연구에서는 N치 50/30이상인 지반의 침하량 산정을 위한 N치 보정방법을 제시하였다. 또한, 미보정 N치, 보정 N치를 적용하여 탄성이론에 근거한 4가지 방법과 7가지의 경험적 제안식으로 산정한 침하량을 평판재하시험 실측치와 비교 검토하였다. 연구 결과 풍화지반(풍화암)에서 탄성이론에 근거한 방법 중에는 Original Elastic Theory, 경험적 제안식 중에서는 Terzaghi-Peck(1948, 1967) modified 1 방법이 평판재하시험 실측치에 가까운 값을 보였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2001년도 봄 학술발표회 논문집
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• pp.215-222
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• 2001

Uncertainty study of shear strength characteristics of the marine clays was carried out based ell In-situ tests and laboratory tests on tile south-east coastal region of the Korean peninsula. Theoretical analyses were studied using both tile spherical cavity expansion theory in finite soil mass and the strain path method to determine tile cone factor using the undrained shear strengths obtained by in-situ tests, and the empirical methods in accordance with the ultimate resistance theory were also discussed. Analysis show that the empirical methods suggest more reasonable value than that of theoretical methods in terms of comparing the cone factor estimated using linear regression and frequency distribution analyses. The cone factors obtained by the empirical methods are 18, 15, and 6 respectively, from the results of total cone resistance, effective cone resistance, and excess porewater cone resistance method, and the estimated were similar to those of previous researcher's.

• 문화기술의 융합
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• 제9권2호
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• pp.319-325
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• 2023

본 연구는 기업의 과잉투자성향이 보유현금의 시장가치에 영향을 미치는지 분석하였다. 또한 기업의 소유구조에 따라 과잉투자성향이 보유현금의 시장가치에 미치는 영향이 차별적으로 나타나는지 검증하였다. 분석결과, 과잉투자성향이 증가할수록 기업의 보유현금에 대한 시장가치는 감소하는 것으로 나타났다. 이와 같은 결과는 투자자들이 과잉투자성향이 높은 기업이 미래의 경영성과가 악화되고 미래 현금흐름에 대한 부담이 과도하게 발생할 것으로 인식하여 이러한 기업의 보유현금에 대한 시장가치를 부정적으로 평가하는 것으로 해석된다. 또한 경영자가 높은 수준의 지분을 보유하고 있는 소유경영자 지배기업의 경우 과잉투자성향이 보유현금의 시장가치를 감소시키는 효과가 더 크게 나타난다는 결과를 발견하였다. 이는 소유경영자 지배기업의 경영자가 자신의 특권을 누리기 위한 목적으로 보유현금을 사적으로 유용하는 것으로 시장에서 인식되어 과잉투자성향이 현금가치를 더 큰 폭으로 감소시키는 것으로 파악된다. 본 연구는 기업의 소유구조의 특성에 따라 과잉투자성향이 보유현금의 시장가치에 미치는 영향이 다르게 나타날 수 있음을 확인하였다는 측면에서 의의를 갖는다.

• 한국산업정보학회논문지
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• 제29권3호
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• pp.89-105
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• 2024

본 연구는 ESG 활동의 효과성을 마케팅 관점에서 접근하여, ESG 활동이 기업의 브랜드 가치에 미치는 영향을 실증적으로 살펴보는 데 목적이 있다. 본 연구는 2016년부터 2022년까지 코스피와 코스닥에 상장된 기업을 대상으로 실증 분석을 실시하였다. 본 연구의 실증 분석 결과를 보면, 첫 번째, ESG 활동 개별 분석에서 E(환경)와 G(지배구조)는 브랜드 가치에 유의한 정(+)의 영향을 미치는 것을 확인하였다. 두 번째, 환경 분야에서는 이해관계자 대응이 브랜드 가치와 유의한 정(+)의 관계가 나타났고 지배구조 분야에서는 이사회가 브랜드 가치와 유의한 정(+)의 관계가 있었다. 본 연구를 통해 ESG 활동이 브랜드 가치를 올리는 데 선행적으로 행해져야 할 중요한 활동임을 증명하는 논리적 근거를 제시할 수 있다. ESG 활동 중에서도 환경 분야의 이해관계자 대응 활동과 지배구조 분야의 이사회 관련 사항이 브랜드 가치를 올리는 데 중요한 역할을 하다는 것을 밝혀내었다. 또한 마케팅 분야에서도 ESG 활동의 중요성을 연구하는데 마중물 역할을 할 것으로 기대한다.

• The Journal of Asian Finance, Economics and Business
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• 제5권3호
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• pp.43-50
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• 2018

The paper aims to investigate the impact of trade cost on export: A Case Study Vietnam. The study conducts a static linear panel data analysis on annual data covering bilateral export between Vietnam and 70 major importers of Vietnam from 2001 to 2013. The gravity model has been one of the most successful applications in empirical trade. In this paper we apply the gravity model to estimate the impact of trade cost on Vietnamese bilateral export value. The paper uses gravity model to estimate the impact of trade cost on Vietnamese bilateral export value. The empirical results derive from a static linear panel data analysis (fixed effects model) indicates that trade cost plays a crucial role in determining the export value that occurs between Vietnam and trading partners. Besides, population of importing country, trade openness of importing country, gross domestic product of importing country and gross domestic product of Vietnam are also significant determinants of Vietnamese bilateral export value. The main findings indicates that trade cost plays a very important role in the Vietnamese bilateral export performance. This suggests that the Vietnamese government should attempt to improve domestic trade costs to enhance competitiveness and increase export growth sustainably.

• 한국의류학회지
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• 제23권8호
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• pp.1218-1227
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• 1999

Consumer evaluate the jeans product by price brand and store because these cues be surrogate indicator that could infer the product quality. But we need to confirm if depending on these cues were rational and this is the goal of this study. method of the study was based on theoretical and empirical study. For empirical study experiments by the subjects among students of Ewha Womans University were done by using jeans as stimulus,. Data was analized by ANOVA factor analysis grouping analysis F-test Pearson's correlation duncan Test and etc 571 data was analyzed of the 600 data. The results of this study are as follows : Evaluation on jeans product were different even though they were exactly the same jeans. Therefore we could confirm the bias by price brand store when consumer evaluate jeans product. Cues like price brand store effected significantly the evaluation of jeans. Quality perception of jeans was most favorable when evaluation cues were combined with high price famous brand and high prestige store. Value perception was favorable when combined with famous brand and high prestige store but value perception on high price became lowe. Purchase intention correlate with value perception and it shows same format with value preception. The most important cue of all three was store the next was price and then brand. These three cues effect the evaluation of jeans product seperately and together.

• International Journal of Advanced Culture Technology
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• 제7권4호
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• pp.86-95
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• 2019

This study verified the research hypothesis by establishing a research model to achieve the purpose of empirical analysis on the relationship between O2O platform quality and personal behavioral value and relationship quality. The main results of this study are as follows. First, information quality (hypothesis 1-1), system quality (hypothesis 1-2), service quality (hypothesis 1-3), perceived product quality (hypothesis 1-4), perceived price (Hypothesis 1-5) was statistically significant, indicating a positive effect on individual behavioral value. Second, as a result of empirical analysis of the relationship between O2O platform quality and relationship quality, hypothesis 2, information quality (hypothesis 2-1), perceived product quality (hypothesis 2-4), and perceived price (hypothesis 2-5) While there was a positive effect on quality, system quality (hypothesis 2-2) and service quality (hypothesis 2-3) were not statistically significant. Third, as a result of verifying the relationship between the relationship quality and personal behavior characteristics of hypothesis 3, as the quality of personal behavior improved as the quality of relationship improved, it was required to continuously improve and strengthen the relationship quality.