Research on Users Willingness to Continuously Purchase Online Music Pay Services

Ziyang Liu,Jiayu Liu 한국동양예술학회 2020 동양예술 Vol.47 No.-

Research on the influence of union-pay M-payment quality and brand personality on user viscosity

Zi-Yang Liu,Jun-Lin Wang,Jiayu Liu,Xiao-yin Liu,Kai Liao 한국컴퓨터정보학회 2020 韓國컴퓨터情報學會論文誌 Vol.25 No.4

이 연구의 목적은 서비스 품질 및 브랜드 특성의 관점에서 Union-Pay 모바일 결제가 사용자 점도에 미치는 영향을 탐색하는 것이다. 앞으로 중국Union-Pay가 모바일결제 시장에서 안정적이고 충실한 사용자 그룹을 확보하는 것이 의미가 있다. 이 연구는 SPSS22.0 및 AMOS 통계 분석 도구를 사용하여 경험적 연구를 수행을 했다. 본 연구는 모바일 서비스 품질을 사용하고 브랜드 성격은 독립 변수이고, 사용자의 점도는 종속 변수이며, China Union-Pay 모바일 결제와 관련하여 사용자의 점도에 미치는 영향을 연구하였다. 연구 분석결과에 따르면, 서비스 품질이 사용자가 인식 한 가치에 유의 한 영향을 미친다는 결과 나타났다. 서비스 품질은 사용자 점도에 유의 한 양의 관계를 갖다. 인식 된 값은 사용자 점도에 유의한 양의 효과를 나타났다. 사용자에 대한 브랜드 특성이 사용자 점도에 유의한 양의 효과를 나타났다. 브랜드 성격은 사용자가 인식 한 가치에 유의 한 양의 관계 영향을 미친다. 이 연구를 통해 모바일 결제 기업의 산업 발전에 대한 제안을 했고 모바일 결제발전에 대한 더 나은 의견을 제시 하였다. The purpose of this study is to explore the impact of Union-Pay mobile payments on user viscosity from the perspective of service quality and brand personality. In the future, it is meaningful for CUP to obtain a stable and loyal user group in China’s mobile payment market. This study uses SPSS22.0 and AMOS statistical analysis tools to conduct empirical research. In this case, this study uses mobile service quality and The brand personality is the independent variable, and the user’s viscosity is the dependent variable, which studies the impact on the user’s viscosity in the context of China Union-Pay mobile payment. the study. According to the analysis results, the research goal: service quality has a significant positive correlation effect on user perceived value; service quality has a significant positive correlation effect on user viscosity; perceived value has significant positive correlation effect on user viscosity; brand personality to user Viscosity has a significant positive correlation effect; brand personality has a significant positive correlation effect on user perceived value. Through this research, we can make Suggestions on the industrial development of mobile payment enterprises and provide better opinions on the development of mobile payment.

A study on the influence of interaction of virtual reality consumption pattern on consumers' purchase intention under the background of VR technology

Xiao-yin Liu,Jiayu Liu,LIUZIYANG 한국컴퓨터정보학회 2021 韓國컴퓨터情報學會論文誌 Vol.26 No.5

The purpose of this study is to explore the interaction of virtual reality consumption pattern under the background of virtual reality, and the influence of such interaction on consumers' purchase intention. In this paper, we selected three independent variables (including content interaction, function interaction and service interaction) and two mediating variables (including perceived quality and perceived value) to explore the relationship between them and consumers' purchase intention, used SPSS24.0 and AMOS24.0, made the analysis of reliability and validity, constructed the structural equation model, and tested the hypotheses. The findings show that: fourteen hypotheses are all true, and the perceived value of virtual reality has a positive influence on consumers' purchase intention. In addition, we find that the perceived value has a mediating effect in this study.

A Hardware-in-the-loop Platform for Modular Multilevel Converter Simulations

Liu, Chongru,Tian, Pengfei,Wang, Yu,Guo, Qi,Lin, Xuehua,Wang, Jiayu The Korean Institute of Power Electronics 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.5

In this paper, a hardware-in-the-loop simulation platform for MMCs is established, which connects a real time digital simulator (RTDS) and a designed MMC controller with optical fiber. In this platform, the converter valves are simulated with a small time step of 2.5 microsecond in the RTDS, and multicore technology is implemented for the controller so that the parallel valve control is distributed between different cores. Therefore, the designed controller can satisfy the requirements of real-time control. The functions of the designed platform and the rationality for the designed controller are verified through experimental tests. The results show that different modulation modes and various control strategies can be implemented in the simulation platform and that each control objective can been tracked accurately and with a fast dynamic response.

Fuzzy Logic PID Controller with Both Coefficient and Error Modifications for Digitally-Controlled DC–DC Switching Converters

Liu Jianfu,Wei Tingcun,Chen Nan,Wu Jiayu,Xiao Peilei 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.4

To improve the transient response performance of digitally-controlled DC–DC switching converters, a fuzzy logic control proportional-integral–differential (FLC–PID) controller with both coefficient and error modifications is presented in this paper. The controller consists of a PID compensator and two fuzzy logic controllers (FLCers): one that adjusts the control coefficients of PID compensator and another that modifies voltage error input to it. These two FLCers have different fuzzy input subsets (FIS), leading to multiple modifications of control coefficients and voltage error for PID compensator. Consequently, the proposed controller results in finer FIS than a conventional FLC–PID controller without significantly increasing the hardware cost. Experimental results demonstrate that it yields a better transient performance in a DC–DC switching converter than does a conventional FLC–PID controller that only modifies the PID control coefficients: the transient performance can be improved by at least 50% and the required hardware resources can be reduced by at least 20%.

Numerically Study of the Flow Field and Spatter Particles in Laser-based Powder Bed Fusion Manufacturing

Jiayue Wang,Yuwen Zhu,Hui Li,Sheng Liu,Shengnan Shen,Lei Wang,Shifeng Wen 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.4

Laser-based powder bed fusion (L-PBF) is an additive manufacturing (AM) technology that uses a high-energy–density laser to scan through a powder bed and completely melts the metal powder. The environment inside the printer chamber, including the flow field of the shielding gas and the spatter particles induced by laser–powder interactions, is essential for product quality. For the first time, this work built a full-size model of printer chamber, and numerically investigated the interaction between the shielding argon flow and the laser induced spatter particles with considering laser temperature. A full-size geometric model of a commercial L-PBF printer with a Gaussian heat source was constructed, as well as a movable particle-release source model for particle injection. The distribution of the argon flow field, the temperature field, and the trajectory and deposition of spatter particles, particularly above the workbench during the L-PBF process were quantitatively analyzed. The results show that the gas flow within 30 mm above the workbench is uniform, and in the upper region of the printer chamber, the flow field is disorderly. The laser can only induce high temperature and upward gas flow in a small region close to the workbench (the height less than 1.6 mm), and the laser induced velocity disturbance in rest regions of the L-PBF printer is negligible. Particles injected towards the outlet (ID4) are mostly blown into the outlet, and in the other four injection directions, more than 90% of spatter particles are deposited inside the printer chamber, especially more than 50% deposited on the workbench. Increasing the laser power (from 100 to 200 W) has little effect on particle deposition on the workbench. Results will be helpful for improving the L-PBF product quality.

Point-to-point motions control of an electromagnetic direct-drive gas valve

Jiayu Lu,Siqin Chang,Liang Liu,Xinyu Fan 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.1

Electromagnetic linear actuators are widely used as drives in gas regulating valve, which is the key factor to determine the performance of the gas valve. In order to improve the performance of Electromagnetic direct-drive gas valve (EMDGV), a compound controller for non-repetitive point-to-point motions was proposed in this paper, combining with the advantages of Active disturbance rejection control (ADRC), Time-optimal control (TOC) and Sliding mode control (SMC). Simulation and experimental results show that the proposed method has the characteristics of fast response and high precision, and can achieve soft landing control. The response time is less than 8 ms, the control accuracy is 0.02 mm, and the seating velocity is within 0.04 m/s. The proposed method also has strong robustness to actuator parameter variation and good anti-disturbance ability.

Characterization and fine mapping of osh15(t), a novel dwarf mutant gene in rice (Oryza sativa L.)

Jiayu Wang,Shuxiu Fan,Xiaoyun Yao,Jin Liu,Xiaoyan Dong,Ting Mao 한국유전학회 2016 Genes & Genomics Vol.38 No.9

Plant height is one of the most important agronomic traits of plant architecture, and also affects grain yield in rice. In this study, we obtained a novel dwarf rice mutant of japonica variety Shennong9816, designated Shennong9816d. Compared with wild-type, the Shennong9816d plant height was significantly reduced, and the tiller number significantly increased. Additionally, the mutant yield component, and the number of large and small vascular bundles were significantly decreased compared with wildtype. Genetic analysis indicated that the Shennong9816d dwarf phenotype was controlled by a recessive nuclear gene, while the plant was shown to be sensitive to gibberellic acid. Using a large F2 population derived from a cross between Shennong9816d and the indica rice variety Habataki, the osh15(t) gene was fine mapped between RM20891 and RM20898, within a physical distance of 73.78 kb. Sequencing analysis showed that Shennong9816d carries a 1 bp mutation and a 30 bp insertion in the OSH15 region. These results suggest that osh15(t) is a novel allelic mutant originally derived from japonica variety Shennong9816, which may be useful for introducing the semi-dwarf phenotype to improve plant architecture in rice breeding practice.

A Hardware-in-the-loop Platform for Modular Multilevel Converter Simulations

Chongru Liu,Pengfei Tian,Yu Wang,Qi Guo,Xuehua Lin,Jiayu Wang 전력전자학회 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.5

In this paper, a hardware-in-the-loop simulation platform for MMCs is established, which connects a real time digital simulator (RTDS) and a designed MMC controller with optical fiber. In this platform, the converter valves are simulated with a small time step of 2.5 microsecond in the RTDS, and multicore technology is implemented for the controller so that the parallel valve control is distributed between different cores. Therefore, the designed controller can satisfy the requirements of real-time control. The functions of the designed platform and the rationality for the designed controller are verified through experimental tests. The results show that different modulation modes and various control strategies can be implemented in the simulation platform and that each control objective can been tracked accurately and with a fast dynamic response.

Thiol-ene Click Chemistry Construct Superhydrophobic Cotton Fabric for High-efficiency Water-in-oil Emulsion Separation

Guihua Meng,Jiayu Yan,Jianning Wu,Weifang Zhang,Yixi Wang,Qian Wang,Zhiyong Liu,Xuhong Guo 한국섬유공학회 2020 Fibers and polymers Vol.21 No.2

Water pollution severely effects human health and ecosystems. This paper presents a simple method of superhydrophobic cotton fabric fabrication for oil/water separation, We implemented thiol-ene reaction using 3-(Trimethoxysilyl)propyl methacrylate (TMSPMA) and n-dodecyl mercaptan (NDM). to synthesize low surface energy hydrophobic modifier. Superhydrophobic cotton fabrics demonstrated excellent superhydrophobicity, which makes them outstanding materials for continuous and simultaneous removal of insoluble and emulsified oils. Chemical composition, morphology, and hydrophobicity of these cotton fabrics were confirmed by FTIR spectra, scanning electron microscopy (SEM), and water contact angle measurements, respectively. Fabrics samples maintained their superhydrophobic propertieseven after 20 cycles, separation efficiency was still above 98.5 %. Our superhydrophobic cotton fabric demonstrated a remarkable separation of emulsified oil. We believe that our quick and environmentally friendly method can be used in variety of applications involving water-in-oil emulsion separation and oil purification.