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텍스트 마이닝 기법을 이용한 모바일 간편결제 서비스에 대한 소비자 반응 분석: 삼성페이를 중심으로
정민지,이유림,유채민,김지원,정재은 한국디지털정책학회 2019 디지털융복합연구 Vol.17 No.1
본 연구는 모바일 간편결제 서비스에 대한 소비자 반응을 살펴보고 그 반응이 서로 어떤 연관이 있는지 파악하고자 하였다. 이를 위해 대표적인 모바일 간편결제 서비스인 삼성페이를 사용한 경험에 대해 언급한 데이터를 수집하고, R을 이용하여 텍스트 빈도분석, 텍스트 군집분석 그리고 텍스트 네트워크 분석을 실시하였다. 본 연구의 주요 결과는 다음과 같다. 첫째, 빈도분석 결과 삼성페이의 기능과 삼성페이가 지갑을 대체할 수 있는 지에 대한 관심이 높은 것으로 드러났다. 둘째, 군집분석 결과 크게 긍정과 부정 반응으로 분류되었으며 5가지 긍정반응 군집과 4가지의 부정반응 군집이 도출되었다. 셋째, 삼성페이에 대한 지갑 대체 가능 여부는 복수의 반응을 하나의 메시지로 묶어주며, 삼성페이에 대한 지속적인 이용의도와 높은 관련성을 지니는 요인임이 밝혀졌다. 본 연구를 통해 소비자 측면에서 삼성페이에 대한 이해를 높이고, 소비자의 가치와 기대에 부응하여 궁극적으로 높은 만족을 이끌어낼 수 있는 서비스를 제공하는데 도움이 될 것으로 기대된다. The purpose of this study is to examine consumers’ responses to mobile payment services by using a text-mining technique focusing on Samsung Pay as it is used in both online and offline transactions. We conducted text frequency analysis, text clustering analysis, and text network analysis using R programming. The major findings are as follows. First, the most frequently used key words referenced the brand names of the mobile devices, the replacement of traditional wallets and unique functions of Samsung Pay. Second, there was a clear split between positive and negative responses at the macro level. Third, replacement of traditional wallets played a great role in the positive responses and continuous use of mobile payment services. This study provides in-depth understanding of consumer responses toward mobile payment services. It also offers practical implications that may help mobile payment marketers correspond to consumer values and expectations, thus increasing consumer satisfaction.
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김동진(Dong-Jin Kim),채종상(Jong-Sang Chae),유채민(Chae-Min Yoo),이배원(Bae-Won Lee) 대한방사선과학회(구 대한방사선기술학회) 2018 방사선기술과학 Vol.41 No.1
Patients who visit the emergency room with urinary stones have difficulty lying down in a supine position due to severe pain when performing the KUB test. The purpose of this study was to find methods to reduce the patients pain and image distortion, and obtain medical images with high diagnostic values. After checking the standard classification of disease and cause of death, the target group consisted of 121 patients who had clearly distinguished stones from computed tomography. Patients with stones in the ureteralvesical junction were excluded. Qualitative image evaluation was performed by confirming the location of the stone in the computed tomography images. and evaluated the rate of visual discrimination of stones possible through KUB and abdominal plain X-ray. Quantitative image evaluation was performed on the KUB, abdominal plain X-ray images. The transverse process of the first lumbar vertebrae served as the standard point, and the length from this point to the lower part of the stone was measured. Results from looking at the rate of visual discrimination of stones possible through KUB and abdominal plain X-ray showed: 94 patients (77.6%) for KUB images and 91 patients (75.2%) for computed tomography images. The standard deviation for KUB and abdominal X-ray was 3 (2.4%). Comparing and analyzing the location from KUB images and abdominal plain X-ray images, the stone position was 10.1 mm in the kidney, 10.5 mm in the ureteropelvic junction, and 9.7 mm in the ureters. It was shown that the stone moved 10 mm on average with significant statistical difference (P<0.05). In cases where the pain is so severe that it is impossible to perform the test in the supine position, an alternative may be to check the stone position by performing a modified KUB test by having the patient stand in a vertical position. In the future, this will provide convenience to both the examiner and the patient when performing the examination, and it will contribute with its reproducibility.
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