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- 저자 : Luo Yangfan (검색결과 5 건)
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Xi Luo,Yangfan Cao 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
Live streaming commerce is a novel form of an e-commerce platform, which works by establishing a temporary virtual community shared by streamers and customers in real time. With the popularity of live streaming shopping, many e-retailers adopted this new platform to promote their products in an effort to boost their sales volume. On the basis of signalling theory and social exchange theory (SET), this study proposes a research model to examine the informational signals and customer-streamer exchanges that two parties shared using live streaming platform. An online survey with 735 samples was collected through a professional online survey service platform (i.e., Wenjuanxing) to measure our model. Our results indicate that both service-centred signal (interaction quality) and product-centred signal (streamer credibility) have significant positive influences on customer evaluation of information quality. The results also denote that the received information quality acts as a significant predictor of customer engagement and buying tendency. Moreover, the results confirm the mediation role of customer engagement in predicting impulsive buying tendency, and the moderation effects of guanxi orientation on customer engagement and impulsive buying tendency. By synthesizing the preceding findings, theoretical and practical implications are discussed in the context of live streaming commerce.
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Yulong Bao,Yongkang Luo,Yuemei Zhang,Yangfan Shen,Huixing Shen 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.5
To study the quality changes of blunt-snout bream (Megalobrama amblycephala) stored at chilled temperature (0-9oC), a global stability index (GSI) method was developed. Sensory score, total aerobic counts (TAC),total volatile basic nitrogen (TVB-N), and K value (as a percentage of the ratio between HxR (hypoxanthine riboside)+Hx (hypoxanthine) to the total ATP (adenosine triphosphate) and its degradation products) were determined to form a GSI value, and a predictive model of GSI was established by combining zero order kinetics with the Arrhenius equation. The results showed that the goodness of fit remained a high level (R2>0.97), the activation energy (EA) and the corresponding pre-exponential factor (k0) were 83.49 kJ/mol and 4.78×1014 respectively. Relative errors between experimental GSI values and predicted GSI values were all within ±15% before the 15th day. Therefore,the model could effectively predict the quality deterioration of blunt-snout bream during chilled storage.
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Low-Carbon Economic Dispatch of an Integrated Energy System Based on Carbon Emission Flow Theory
Liu Zheyuan,Xing Haijun,Luo Yangfan,Ye Yujing,Shi Yusong 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.3
To address the problem of low carbon economic dispatch of integrated energy systems, carbon emission flow theory is introduced into the optimal dispatch of integrated energy systems. Firstly, the carbon emission flow model is used to calculate the carbon emissions of each load in the framework of the electricity-gas integrated energy system. Secondly, the Shapley value method is introduced into the integrated energy system carbon trading model to analyze its incentive effect on emission reduction. Finally, a bi-level dispatching model of the integrated energy system is established, with the upper level being the grid and gas network dispatching model with the minimum operating cost as the objective function, and the lower level being the energy hub dispatching model with the minimum operating cost as the objective function. Low carbon economic dispatching is carried out with the objective function of minimizing operating costs. The model is verified through arithmetic examples to have the effect of improving energy utilization, reducing operating costs, and reducing carbon emissions, and can achieve low carbon economic operation.
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Wang Jing,Xing Haijun,Wang Huaxin,Xie Baojiang,Luo Yangfan 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.5
In order to further improve the energy consumption potential and system energy utilization effi ciency on the demand side of regional integrated energy system (RIES), taking into account economy and energy effi ciency, a RIES optimal operation model and strategy considering integrated demand response (IDR) and exergy effi ciency are proposed. Firstly, the IDR is modeled, the exergy effi ciency of RIES is analyzed, and an exergy effi ciency model considering IDR is established. Secondly the RIES multi-objective optimization model is established with the goal of the lowest economic cost and the highest exergy effi ciency. In order to obtain a series of Pareto frontier solutions with uniform distribution, the normal boundary intersection is used to solve the multi-objective. Finally, the system economic cost and exergy effi ciency under four diff erent scenarios are analyzed. A practical example is used to verify the proposed model. The results show that considering the comprehensive demand response in RIES can eff ectively reduce the system cost. Through multi-objective analysis, it is verifi ed that the reasonable addition of comprehensive demand response can further improve the system exergy effi ciency and stimulate the exergy consumption potential on the demand side.
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Yang Fan,Liu Kai,Zhu Liwei,Hu Jiayuan,Wang Xiaoyu,Shen Xiaoming,Luo Hanwu,Ammad Jadoon 한국자기학회 2017 Journal of Magnetics Vol.22 No.1
In order to detect the current flowing through concealed conductor, this paper proposes a new method based on derivative method. Firstly, this paper analyzes the main peak characteristic of the derivative function of magnetic field generated by a current-carrying conductor, and a relationship between the current flowing through the conductor and the main peak of the derivative function is obtained and applied to calculate the current. Then, the method is applied to detect the conductor current flowing through grounding grids of substations. Finally, the numerical experimental and field experiment verified the feasibility and accuracy of the method, and the computing results show that the method can effectively measure the conductor current of grounding grids with low error, and the error is within 5 %.
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