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모바일 결제시스템의 특성이 지각된 가치에 미치는 영향 : 사용자 국적의 조절효과를 중심으로
유서설(Liu, Ruixue),윤종수(Yoon, Jongsoo) 한국상품학회 2021 商品學硏究 Vol.39 No.6
전 세계적으로 스마트폰과 태블릿PC 등의 빠른 사용자 수 증가와 함께 모바일 전자상거래의 이용률이 높아지면서 현금결제를 대신할 편리하고 안정적인 새로운 결제시스템에 대한 시장수요가 증대되고 있다. 모바일 결제시스템의 시장 확대 및 활성화에 힘입어 소비자들은 언제 어디서나 시간과 장소의 제약에서 벗어나 모바일 기기를 통해 다양한 제품을 손쉽게 구매할 수 있게 되었으며, 기업은 새로운 글로벌 시장에서 우위를 차지하기 위해 다양한 기능을 갖춘 모바일 결제시스템 도입을 위해 노력을 경주하고 있다. 이러한 배경하에, 모바일 결제시스템의 특성이 소비자들의 지각된 가치에 어떠한 영향을 미치는가를 파악할 필요성이 존재한다. 따라서, 본 연구는 한국과 중국의 사용자들을 대상으로 모바일 결제시스템의 특성이 지각된 가치에 어떠한 영향을 미치는지를 실증적으로 규명하고자 한다. 이와 함께, 본 연구는 사용자의 특성(국적)은 이러한 모바일 결제시스템의 특성과 지각된 가치 사이에 어떠한 역할을 하는가를 분석하는데 연구의 초점을 두고 있다. 본 연구의 주요 통계분석 결과를 요약하여 제시하면 다음과 같으며, 이를 통해 본 연구에서는 이론적 및 실무적 시사점과 함께 향후 연구방향을 다음과 같이 제시하였다. 첫째, 모바일 결제시스템의 특성 중에서 경제성을 제외한 효율성, 보안성, 신뢰성, 호환성은 지각된 가치에 정(+)의 영향을 미치는 것으로 파악되었다. 둘째, 모바일 결제시스템의 특성과 지각된 가치간의 관련성에 있어서 사용자의 특성(국적)은 부분적으로 조절 효과를 나타내고 있음을 알 수 있었다. Mobile payment system is becoming more common along with the use of mobile devices such as smart phone and tablet computer increases around the world. In other words, many customers have been able to search, compare and order various products and services what they want without restrictions on time and place in mobile Internet environment and even to make payments easily and conveniently. In order to flexibly respond to changes in these situations while continuing to maintain desirable relationships with customers, many companies are especially making various efforts to manage ‘perceived value’ which means how customers think about the mobile payment system. Considering this situation, it is necessary to investigate which properties of the mobile payment system have a significant effect on the perceived value of customers who use it. The study is to empirically identify which properties of mobile payment system affect the perceived value of those who use it and also is to analyze whether the relationship between the property of mobile payment system and the perceived value depends on the users’ nationality type. To achieve these research purposes, the study defined the property of mobile payment systems(security, efficiency, reliability, compatibility, economics) and perceived value(functional, emotional, social, economical) based on the literature review of mobile payment system. The study results show, from the statistical analyses using 400 survey questionnaires on Korean and Chinese mobile payment systems users, that most factors such as security, efficiency, reliability, compatibility except economics, among the property of mobile payment systems, have a statistically significant effect on the perceived value and that the users’ nationality has a partial moderating effect on the relationship between the property of mobile payment systems and the perceived value.
Ruixue Lv,Faizal Soyekwo,Qiugen Zhang,Runsheng Gao,Jianyang Wu,Yan Qu,Aimei Zhu,Qinglin Liu 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.49 No.-
Polymer mesoporous membranes are widely employed in many membrane processes includingultrafiltration and dialysis, and become more crucial with increasing demand in chemical and lifefields. Here we report a highly-efficient polymer membrane with sub-5 nm pores and highflux frompolyacrylonitrile (PAN) nanoparticles produced from dilute PAN solution via fast freeze-extractionprocess. The25 nm-size PAN nanoparticles forming brad-like chains are dispersed in ethanol solutionand used to prepare the membrane byfiltration-assisted assembly method across a macroporoussupport. Effects of solvents and usage of PAN on membrane formation is studied in detail. The resultantmembranes comprise of the nanoparticles stacked on the support to form a mesoporous separation layerwith a controllable thickness and a cut-off of below 5 nm. They exhibit excellent separation performancesin ultrafiltration of protein and nanoparticle solutions. Typically, the membrane with 94.6% rejection of5 nm gold nanoparticles has a pure waterflux of 823 L m 1 h 1 bar 1 and perfect rejection for ferritinmolecules and 10 nm gold nanoparticles. The newly developed membranes should have wide applicationin chemical, environment and lifefields.
Ruixue Li,Qian Zhang,Xingliang Peng,Weizhen Liu 한양대학교 세라믹연구소 2020 Journal of Ceramic Processing Research Vol.21 No.1
The effect of CeO2 addition on crystallization and thermo-physical properties of lithium zinc silicate (LZS) glasses containingLi2O-ZnO-SiO2-Al2O3-Na2O-P2O5 was investigated. The changes of CeO2 contents (2-8 wt.%) had an obvious influence on thetransition temperatures (Tg) and crystallization temperatures (Tc) of LZS glass-ceramics, and they increased with CeO2 contentincreasing. According to XRD analysis, CeO2 promoted the formation of cristobalite and β-spodumene crystals, and β-spodumene increased obviously. As the CeO2 content increasing, the microstructure and microhardness (being 6.88 Gpa at 880oC) of glass-ceramics had great changes. The average thermal expansion coefficient (20 - 450 oC) showed first increasing thendecreasing, having a wide range. The maximum of thermal expansion coefficient was obtained when the glass-ceramicscontained 4 wt.% CeO2, being 175×10−7 K−1 (at 700 oC) and 178×10−7 K−1 (at 880 oC) respectively. Excellent thermo-physicalproperties indicate the glass has greater potential application, such as being used as sealing glass.
Xin Li,Yancheng Li,Yuanhao Liang,Ruixue Hu,Wenli Xu,Yufeng Liu 대한당뇨병학회 2021 Diabetes and Metabolism Journal Vol.45 No.2
Background: We hypothesized that specific amino acids or acylcarnitines would have benefits for the differential diagnosis of diabetes. Thus, a targeted metabolomics for amino acids and acylcarnitines in patients with diabetes and its complications was carried out. Methods: A cohort of 54 normal individuals and 156 patients with type 2 diabetes mellitus and/or diabetic complications enrolled from the First Affiliated Hospital of Jinzhou Medical University was studied. The subjects were divided into five main groups: normal individuals, impaired fasting glucose, overt diabetes, diabetic microvascular complications, and diabetic peripheral vascular disease. The technique of tandem mass spectrometry was applied to obtain the plasma metabolite profiles. Metabolomics multivariate statistics were applied for the metabolic data analysis and the differential metabolites determination. Results: A total of 10 cross-comparisons within diabetes and its complications were designed to explore the differential metabolites. The results demonstrated that eight comparisons existed and yielded significant metabolic differences. A total number of 24 differential metabolites were determined from six selected comparisons, including up-regulated amino acids, down-regulated medium-chain and long-chain acylcarnitines. Altered differential metabolites provided six panels of biomarkers, which were helpful in distinguishing diabetic patients. Conclusion: Our results demonstrated that the biomarker panels consisted of specific amino acids and acylcarnitines which could reflect the metabolic variations among the different stages of diabetes and might be useful for the differential diagnosis of prediabetes, overt diabetes and diabetic complications.
Ergonomic Development and Evaluation of UI Design for Optical Brain- Machine Interface (OBMI) System
Xin Cui(최신아),Hayoung Jung(정하영),Halim Kim(김하림),Yang Xiaopeng(양샤오펑),Linqing Feng(펭린칭),Shaomin Zhang(장샤오민),Mingkang Li(리밍캉),Changhao Liu(리우창하오),Jiawei Han(한지아웨이),Ruixue Wang(왕루이수에),Heecheon You(유희천) 대한인간공학회 2020 대한인간공학회 학술대회논문집 Vol.2020 No.10