Research on the purchase intention of metaverse music performances based on the theory of perceived value

Yuxin Mao,Rui Cao KOREA INSTITUTE FOR HUMANITIES AND SOCIAL SCIENCES 2023 Journal of Arts and Cultural Studies(ACS) Vol.2 No.2

The digital transformation has enabled the metaverse concept.Metaverse music performances are presented to the public in a new art form by the continuous efforts major enterprises. Purpose: Investigating the purchase intention of metaverse music performances can promote this model. Methods: This paper analyzes the purchase intention of metaverse music performances based on the theory of perceived value. SPSS 24 was used for analysis. Results: Teenagers are willing to consume these performances. Secondly, the functional, emotional, social, price, and environmental values all impact the consumption willingness of performances. Among these, functional, emotional, environmental, and social values positively impact consumption intention. Environmental value is the main reason for consumers' willingness to consume. The Metaverse music performances price value hurts consumer intentions. Conclusion: The enterprises using metaverse for music performances should consider music preformances price value control, The willingness to pay according to the conditional value assessment model and direct inquiry are 166.61 and 161.31 yuan respectively.

Axial compressive behavior of high strength concrete-filled circular thin-walled steel tube columns with reinforcements

Meng Chen,Yuxin Cao,Ye Yao 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.88 No.1

In this study, circular thin-walled reinforced high strength concrete-filled steel tube (RHSCFST) stub columns with various tube thicknesses (i.e., 1.8, 2.5 and 3.0mm) and reinforcement ratios (i.e., 0, 1.6%, 2.4% and 3.2%) were fabricated to explore the influence of these factors on the axial compressive behavior of RHSCFST. The obtained test results show that the failure mode of RHSCFST transforms from outward buckling and tearing failure to drum failure with the increasing tube thickness. With the tube thickness and reinforcement ratio increased, the ultimate load-carrying capacity, compressive stiffness and ductility of columns increased, while the lateral strain in the stirrup decreased. Comparisons were also made between test results and the existing codes such as AIJ (2008), BS5400 (2005), ACI (2019) and EC4 (2010). It has been found that the existing codes provide conservative predictions for the ultimate load-carrying capacity of RHSCFST. Therefore, an accurate model for the prediction of the ultimate load-carrying capacity of circular thin-walled RHSCFST considering the steel reinforcement is developed, based on the obtained experimental results. It has been found that the model proposed in this study provides more accurate predictions of the ultimate load-carrying capacity than that from existing design codes.

Sea buckthorn (Hippophae rhamnoides L.) oil enhances proliferation, adipocytes differentiation and insulin sensitivity in 3T3-L1 cells

Ting Zhang,Xuze Qin,Yuxin Cao,Jianxin Zhang,Jun-Xing Zhao 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.11

The objective of this study is to investigate theeffects of sea buckthorn oil (SBO) on proliferation, adipogenicdifferentiation and insulin sensitivity of 3T3-L1cells. Results showed that SBO increased cell proliferationability, accompanied by up-regulated proliferating cellnuclear antigen content (p\0.05) and p38 activity(p\0.05). SBO also promoted adipogenesis and enhancedadipogenic transcriptional factors expression. Mitochondrialbiogenesis related gene expressions were elevated inSBO treated cells (p\0.05). Of note, SBO also increasedglucose uptake and glucose transporter 4 abundance(p\0.05). Cells treated with SBO exhibited greaterphosphorylated insulin receptor substrate 1 (p\0.05),phosphorylated-Akt (p\0.05) and phosphorylated AMPactivatedprotein kinase (p\0.01) contents. When takentogether, these results suggest that SBO promotes 3T3-L1cells proliferation, adipogenesis and insulin sensitivity.

Alkyl-substituted carbazole/pyridine hybrid host materials for efficient solution-processable blue- and green-emitting phosphorescent OLEDs

Chao Tang,Jianmei Chen,Yuxin Li,Xinchao Liu,Lili Zhang,Fangfang Wang,Jia Hu,Xudong Cao,Tao Jiang 대한금속·재료학회 2021 ELECTRONIC MATERIALS LETTERS Vol.17 No.2

Three new pyridine-cored alkyl-substituted carbazole derivatives of 2,6-bis(2,7-dimethyl-9H-carbazol-9-yl)pyridine(2,7-MeCzPy), 2,6-bis(3,6-dimethyl-9H-carbazol-9-yl) pyridine (3,6-MeCzPy) and 2,6-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)pyridine (3,6-tBuCzPy) were synthesized by means of connecting methyl or tert-butyl substituents on the3,6 or 2,7 positions of carbazole with pyridine ring as the core. The influence of different alkyl and linkages modeon the thermal, photophysical, electrochemical properties and devices electrolumiescent (EL) performances of thecompounds were comprehensively studied. In solution-processed blue or green phosphorescent organic light-emittingdiodes (PHOLEDs) with bis[2-(4,6-difluorophenyl)-pyridinato-N,C2] picolinate iridium(III) (FIrpic) or fac-tris(2-phenylpyridine)iridium (Ir(ppy)3) as phosphorescent dopants, EL performances follow the same sequence of 2,7-MeCzPy> 3,6-tBuCzPy > 3,6-MeCzPy, the trend is consistent with the value of triplet energies (ET). Devices hosted by2,7-MeCzPy achieving the best EL performance, exhibited maxima 13.6 cd A−1 and 7.0 lm W−1 for current efficiency(CE) and power efficiency (PE) in blue PHOLEDs, maxima 26.2 cd A−1 and 16.2 lm W−1 for CE and PE in greenPHOLEDs.

Influence of Layer Thickness Ratio on the Mechanical and Failure Properties of Soft-Hard Interbedded Rock-like Material

Qiang Xie,Hao Gao,Yuxin Ban,Xiang Fu,Xiaowen Liang,Zhilin Cao,Jun Duan 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.11

To figure out the influence of soft-hard layer thickness ratio on specimens’ mechanical properties evolution and microcracking mechanism, combined with digital image correlation technology and acoustic emission facility, uniaxial compression tests were conducted on soft-hard interbedded rock-like materials considering seven bedding dip angles and two soft-hard layer thickness ratios. The results are as follows: 1) The failure mode and failure pattern of layered rock masses are mainly determined by the bedding dip angle α and are less related to the soft-hard thickness ratio. With the increase of dip angle, the failure strength curve of the specimen is approximately U-shaped, and the soft-hard layer thickness ratio affects the U-shaped. The decrease in soft-hard layer thickness ratio will reduce the uniaxial compressive strength of specimens with low dip angles (α≦30°), cause differences in the evolution path of local strain fields of layered rock masses and reduce the horizontal displacement of the main crack. 2) The increase of the proportion of soft layer in the soft-hard layer thickness ratio will reduce the proportion of tensile cracks in the tensile failure specimens and shear cracks in the shear failure specimens, complicating the process of cracks of the layer rock mass. 3) Increasing the proportion of soft layers in the soft-hard layers thickness ratio promotes the generation of secondary cracks in layered rock masses and further reduces the integrity of specimens. Finally, through the findings in this paper, it can provide a reference for analyzing the crack propagation behavior of layered rock.

Prediction and Feature Importance of Earth Pressure in Shields Using Machine Learning Algorithms

Hongyu Huang,Lipeng Liu,Ruilang Cao,Yuxin Cao 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.2

To reduce subjectivity and uncertainty when maintaining suitable earth pressure in earth pressure shields that can prevent heave or collapse, many prediction models using machine learning algorithms were proposed, but little research into the effects of other parameters on earth pressure has been undertaken, and soil conditioning parameters are always ignored. To establish a model with thorough parameters and probe into influences of other parameters, multiple machine learning algorithms were attempted. Given the accuracy, diversity and functions, random forest (RF), LightGBM and Attention-back-propagation neural network (Attention-BPNN) were further analyzed. Then, two RF models were compared in this research, one with soil conditioning parameters and the other without. Meanwhile, a case study was utilized to verify the reliability of the model. Finally, the feature importance of three models was compared and the variation rules of the most four important features were discussed by controlling variates. The results showed that soil conditioning parameters delivered a significant reduction in the prediction error. The case study demonstrated that the proposed model can satisfy engineering requirements. More earth pressure should give priority to increasing propulsion pressure, advance rate, and reducing foam air flow, rotational speed of screw conveyor, and vice versa.

Polarization Error Analysis of an All-Optical Fibre Small Current Sensor for Partial Discharge

Gaifang Xin,Jun Zhu,Chengming Luo,Jing Tang,Wei Li,Yuxin Cao,Haiyan Xu 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.5

In view of the characteristics of the small amplitude of a current signal, an all-optical fi bre small-current sensor for partial discharge is devised. A novel type of sensor head with electric winding light is proposed. A complete optical model of the optical fi bre current sensor is developed under the eff ect of polarization error factors. In addition, the eff ect of polarization error factors on the optical fi bre sensing system is simulated. The simulation results show that as the extinction ratio increases, the output relative error of the optical fi bre small-current sensor decreases. The eff ect of the fast and slow axis misalignment errors of a polarizing beam splitter is similar to the eff ect of the alignment angle error of an optical fi bre polarizer. It is observed that the relative error curve follows a sine function. Meanwhile, the output relative error increases fi rst and then oscillates with an increase in the linear birefringence. We conclude that the linear birefringence of the sensing optical fi bre is the main error source for the measurement accuracy of the sensing system. Finally, an experimental system for the optical fi bre small-current sensor is implemented. The experimental results show that the eff ect of linear birefringence on the fi bre current sensing system can be suppressed by introducing a large amount of circular birefringence into the sensing optical fi bre. The theoretical mechanism of these errors is analysed, which can be applied to implement corresponding measures to reduce the eff ect of error factors on the sensing system and further improve the measurement accuracy of the optical fi bre small-current sensor.