A dynamic pricing model was established based on forecasting the demand for container handling of a specific shipping company to maximize terminal profits to solve terminal handling charges under the changing market e...A dynamic pricing model was established based on forecasting the demand for container handling of a specific shipping company to maximize terminal profits to solve terminal handling charges under the changing market environment.It assumes that container handling demand depends on the price and the unknown parameters in the demand model.The maximum quasi-likelihood estimation(MQLE)method is used to estimate the unknown parameters.Then an adaptive dynamic pricing policy algorithm is proposed.At the beginning of each period,through dynamic pricing,determining the optimal price relative to the estimation value of the current parameter and attach a constraint of differential price decision.Meanwhile,the accuracy of demand estimation and the optimality of price decisions are balanced.Finally,a case study is given based on the real data of Shanghai port.The results show that this pricing policy can make the handling price converge to the stable price and significantly increase this shipping company’s handling profit compared with the original“contractual pricing”mechanism.展开更多
Numerical simulations on the optimization of junction termination extension（JTE） have been performed.Various termination techniques have been applied and simulated in this paper,such as single-zone JTE（S-JTE）,mult...Numerical simulations on the optimization of junction termination extension（JTE） have been performed.Various termination techniques have been applied and simulated in this paper,such as single-zone JTE（S-JTE）,multi-zone JTE（M-JTE）,and space-modulated JTE（SM-JTE）.A completely novel and efficient method is demonstrated in this paper to determine total length of SM-JTE,and it is verified through simulation results.The simulation results show that the SM-JTE could provide a protection efficiency（defined in Section 2） of 95.2%,which is much higher than that of M-JTE（82.4%） and S-JTE（64.7%）.Based on the fabricated MOSFETs,the interface charge density is extracted and the approximate range of charge density has been determined.The influences of different interface charge densities have been investigated for the three termination techniques respectively.According to the previous reports,the JTE is quite sensitive to the implanted dose,so the blocking capability of each termination structure with different implanted doses is also simulated.The results show that when interface charge is considered,the SM-JTE always shows an enormous advantage over the other two junction termination structures,however the interface charge densities varied.The space-modulated JTE is also applicable to the power planar devices such as MOSFETs and IGBTs,which would provide a very promising lower fabrication cost.展开更多
文摘A dynamic pricing model was established based on forecasting the demand for container handling of a specific shipping company to maximize terminal profits to solve terminal handling charges under the changing market environment.It assumes that container handling demand depends on the price and the unknown parameters in the demand model.The maximum quasi-likelihood estimation(MQLE)method is used to estimate the unknown parameters.Then an adaptive dynamic pricing policy algorithm is proposed.At the beginning of each period,through dynamic pricing,determining the optimal price relative to the estimation value of the current parameter and attach a constraint of differential price decision.Meanwhile,the accuracy of demand estimation and the optimality of price decisions are balanced.Finally,a case study is given based on the real data of Shanghai port.The results show that this pricing policy can make the handling price converge to the stable price and significantly increase this shipping company’s handling profit compared with the original“contractual pricing”mechanism.
文摘Numerical simulations on the optimization of junction termination extension（JTE） have been performed.Various termination techniques have been applied and simulated in this paper,such as single-zone JTE（S-JTE）,multi-zone JTE（M-JTE）,and space-modulated JTE（SM-JTE）.A completely novel and efficient method is demonstrated in this paper to determine total length of SM-JTE,and it is verified through simulation results.The simulation results show that the SM-JTE could provide a protection efficiency（defined in Section 2） of 95.2%,which is much higher than that of M-JTE（82.4%） and S-JTE（64.7%）.Based on the fabricated MOSFETs,the interface charge density is extracted and the approximate range of charge density has been determined.The influences of different interface charge densities have been investigated for the three termination techniques respectively.According to the previous reports,the JTE is quite sensitive to the implanted dose,so the blocking capability of each termination structure with different implanted doses is also simulated.The results show that when interface charge is considered,the SM-JTE always shows an enormous advantage over the other two junction termination structures,however the interface charge densities varied.The space-modulated JTE is also applicable to the power planar devices such as MOSFETs and IGBTs,which would provide a very promising lower fabrication cost.
