This paper presents a novel integrated framework for simulating the charging load of an electric vehicle charging station. The framework is built based on the cellular automaton model, including five modules: vehicle ...This paper presents a novel integrated framework for simulating the charging load of an electric vehicle charging station. The framework is built based on the cellular automaton model, including five modules: vehicle generation, charging station, lane change, speed update and boundary clear. The proposed framework can effectively stimulate the system dynamics of the traffic system and charging power process in a charging station. Case studies have verified its feasibility and effectiveness.展开更多
Purpose The polarization characteristics of photoelectrons are critical for free-electron laser(FEL)experiments.Several FEL facilities have operated an eTOF-alike polarimeter based on the angular distribution of photo...Purpose The polarization characteristics of photoelectrons are critical for free-electron laser(FEL)experiments.Several FEL facilities have operated an eTOF-alike polarimeter based on the angular distribution of photoelectrons.The purpose of this paper is to introduce the design,construction and offline test of the prototype angular resolved polarimeter(ARPolar-CORE)for the Shanghai Soft X-ray Facility(SXFEL).This paper describes the overall design of this instrument,covering the main chamber,detector assemblies,and electronics.Methods To validate the performance of the instrument,the detectors and electronics were tested offline and calibrated.Moreover,based on the measured pulse shape obtained from the offline tests,a comprehensive numerical analysis is presented to evaluate the performance of the instrument.Results and conclusion The results show that the fluctuation in the electron charges is less than 0.8%under the SXFEL working conditions,corresponding to a linear polarity of 0.988±0.0175 for linearly and horizontally polarized FEL pulses.The analysis also indicates that a 0.16 eV mean square error is fully feasible for 645 eV FEL pulses.展开更多
Dear Editor,The evolving pandemic of coronavirus disease 19(COVID-19),is arousing alarm to public health.According to epidemiological and observational investigations,coagulopathy was frequently seen in severe COVID-1...Dear Editor,The evolving pandemic of coronavirus disease 19(COVID-19),is arousing alarm to public health.According to epidemiological and observational investigations,coagulopathy was frequently seen in severe COVID-19 patients1.Some coagulation factors such as D-dimer,prothrombin time(PT);von Willebrand factor(VWF),platelet count,and fibrinogen were documented to be important predictors of critically ill patients with COVID-19 in many retrospective observational studies and were substantially discussed before(see Supplementary Notes),yet the causality from specific coagulation factors to the incidence of COVID-19 severity and the underlying mechanism remains elusive.展开更多
基金supported by National Natural Science Foundation of China (No. 51377111)Fundamental Research Funds for the Central Universities (No. YJ201654)Open Research Subject of Key Laboratory of Sichuan Power Electronics Energy-saving Technology and Devices (No. szjj2017-052)
文摘This paper presents a novel integrated framework for simulating the charging load of an electric vehicle charging station. The framework is built based on the cellular automaton model, including five modules: vehicle generation, charging station, lane change, speed update and boundary clear. The proposed framework can effectively stimulate the system dynamics of the traffic system and charging power process in a charging station. Case studies have verified its feasibility and effectiveness.
基金supported by the National Key Research and Development Program of China(2018YFE0103100)the National Natural Science Foundation of China(12125508,11935020)+1 种基金Program of Shanghai Academic/Technology Research Leader(21XD1404100)Shanghai Pilot Program for Basic Research–Chinese Academy of Science,Shanghai Branch(JCYJ-SHFY-2021-010)
文摘Purpose The polarization characteristics of photoelectrons are critical for free-electron laser(FEL)experiments.Several FEL facilities have operated an eTOF-alike polarimeter based on the angular distribution of photoelectrons.The purpose of this paper is to introduce the design,construction and offline test of the prototype angular resolved polarimeter(ARPolar-CORE)for the Shanghai Soft X-ray Facility(SXFEL).This paper describes the overall design of this instrument,covering the main chamber,detector assemblies,and electronics.Methods To validate the performance of the instrument,the detectors and electronics were tested offline and calibrated.Moreover,based on the measured pulse shape obtained from the offline tests,a comprehensive numerical analysis is presented to evaluate the performance of the instrument.Results and conclusion The results show that the fluctuation in the electron charges is less than 0.8%under the SXFEL working conditions,corresponding to a linear polarity of 0.988±0.0175 for linearly and horizontally polarized FEL pulses.The analysis also indicates that a 0.16 eV mean square error is fully feasible for 645 eV FEL pulses.
基金This work was supported by grants from the National Natural Science Foundation of China 32070675 and 31871327(MJ.L.)Natural Science Foundation of Tianjin 19JCJQJC63600(MJ.L.).
文摘Dear Editor,The evolving pandemic of coronavirus disease 19(COVID-19),is arousing alarm to public health.According to epidemiological and observational investigations,coagulopathy was frequently seen in severe COVID-19 patients1.Some coagulation factors such as D-dimer,prothrombin time(PT);von Willebrand factor(VWF),platelet count,and fibrinogen were documented to be important predictors of critically ill patients with COVID-19 in many retrospective observational studies and were substantially discussed before(see Supplementary Notes),yet the causality from specific coagulation factors to the incidence of COVID-19 severity and the underlying mechanism remains elusive.
