网上商品销售与线下商品销售存在较大不同,为探索其消费模式,需要研究各影响因素对网上商品销量的作用机制。文章基于心理抗拒、贝勃定律、卢因人类行为理论等,对网络消费行为进行系统分析;综合运用分位数回归和门限回归方法,建立了门...网上商品销售与线下商品销售存在较大不同,为探索其消费模式,需要研究各影响因素对网上商品销量的作用机制。文章基于心理抗拒、贝勃定律、卢因人类行为理论等,对网络消费行为进行系统分析;综合运用分位数回归和门限回归方法,建立了门限分位数回归模型,揭示商品价格、商家信誉评分、商家信誉等级、保障标记数量、商品收藏人气、口碑数量和口碑分数等对销量的非线性异质影响。以受众广泛的i Pad air2网上销售为研究对象,实证结果表明:提高商家的信誉等级、增加口碑数量能使高销量商家的销量更高,而保障标记数量的增加对热销有阻碍作用;在非热门商品转向热销品的过程中,增加收藏人气、增加口碑数量和一定价格范围内的提价对低销量商家的销量有促进作用。展开更多
Based on simplified Volterra model, a behavior-level simulation analysis approach of electromagnetic susceptibility （EMS） for radio frequency （RF） receiver is presented in this article. Third order simplified Volt...Based on simplified Volterra model, a behavior-level simulation analysis approach of electromagnetic susceptibility （EMS） for radio frequency （RF） receiver is presented in this article. Third order simplified Volterra model is adopted to analyze receiver EMS. A general criterion for EMS is proposed according to EMS response characteristics in frequency domain, and then the simulation flow charts for calculating susceptibility thresholds are given. This approach is superior to the previous EMS analysis method on receiver, which mainly relies on experiments but lack simulation analysis. Take the dual frequency GPS receiver and zero IF receiver interfered by continue wave as examples for in-band and out-of-band susceptibility threshold calculation. Simulation results show that the proposed method is not only valid and effective, but also reduces the internal storage and simulation time, which is suitable to RF receiver EMS analysis and practical in engineering and technology field.展开更多
In this paper,we formulate the transmission phenomena of Hand-Foot-Mouth Disease(HFMD)through non-integer derivative.We interrogate the biological meaningful results of the recommended system of HFMD.The basic reprodu...In this paper,we formulate the transmission phenomena of Hand-Foot-Mouth Disease(HFMD)through non-integer derivative.We interrogate the biological meaningful results of the recommended system of HFMD.The basic reproduction number is determined through next generation method and the impact of different parameters on the reproduction number is examined with the help of partial rank correlation coeficient(PRCC)technique.In addition,we concentrated on qualitative analysis and dynamical behavior of HFMD dynamics.Banach's and Schaefer's fixed-point theorems are used to analyze the uniqueness and existence of the solution of the proposed HFMD model.The HFMD system's Ulam-Hyers stability has been confirmed to be sufficient.To highlight the impact of the parameters on the dynamics of HFMD,we performed several simulations through numerical scheme to conceptualize the transmission route of the infection.To be more specific,numerical simulations are used to visualize the effect of input parameters on the systems dynamics.We have shown the key input parameters of the system for the control of infection in the society.展开更多
文摘网上商品销售与线下商品销售存在较大不同,为探索其消费模式,需要研究各影响因素对网上商品销量的作用机制。文章基于心理抗拒、贝勃定律、卢因人类行为理论等,对网络消费行为进行系统分析;综合运用分位数回归和门限回归方法,建立了门限分位数回归模型,揭示商品价格、商家信誉评分、商家信誉等级、保障标记数量、商品收藏人气、口碑数量和口碑分数等对销量的非线性异质影响。以受众广泛的i Pad air2网上销售为研究对象,实证结果表明:提高商家的信誉等级、增加口碑数量能使高销量商家的销量更高,而保障标记数量的增加对热销有阻碍作用;在非热门商品转向热销品的过程中,增加收藏人气、增加口碑数量和一定价格范围内的提价对低销量商家的销量有促进作用。
基金National Natural Science Foundation of China (60831001)
文摘Based on simplified Volterra model, a behavior-level simulation analysis approach of electromagnetic susceptibility （EMS） for radio frequency （RF） receiver is presented in this article. Third order simplified Volterra model is adopted to analyze receiver EMS. A general criterion for EMS is proposed according to EMS response characteristics in frequency domain, and then the simulation flow charts for calculating susceptibility thresholds are given. This approach is superior to the previous EMS analysis method on receiver, which mainly relies on experiments but lack simulation analysis. Take the dual frequency GPS receiver and zero IF receiver interfered by continue wave as examples for in-band and out-of-band susceptibility threshold calculation. Simulation results show that the proposed method is not only valid and effective, but also reduces the internal storage and simulation time, which is suitable to RF receiver EMS analysis and practical in engineering and technology field.
文摘In this paper,we formulate the transmission phenomena of Hand-Foot-Mouth Disease(HFMD)through non-integer derivative.We interrogate the biological meaningful results of the recommended system of HFMD.The basic reproduction number is determined through next generation method and the impact of different parameters on the reproduction number is examined with the help of partial rank correlation coeficient(PRCC)technique.In addition,we concentrated on qualitative analysis and dynamical behavior of HFMD dynamics.Banach's and Schaefer's fixed-point theorems are used to analyze the uniqueness and existence of the solution of the proposed HFMD model.The HFMD system's Ulam-Hyers stability has been confirmed to be sufficient.To highlight the impact of the parameters on the dynamics of HFMD,we performed several simulations through numerical scheme to conceptualize the transmission route of the infection.To be more specific,numerical simulations are used to visualize the effect of input parameters on the systems dynamics.We have shown the key input parameters of the system for the control of infection in the society.
