This paper deals with the iterative learning control （ILC） design for multiple-input multiple-output （MIMO）,time-delay systems （TDS）.Two feedback ILC schemes are considered using the so-called two-dimensional ...This paper deals with the iterative learning control （ILC） design for multiple-input multiple-output （MIMO）,time-delay systems （TDS）.Two feedback ILC schemes are considered using the so-called two-dimensional （2D） analysis approach.It shows that continuous-discrete 2D Roesser systems can be developed to describe the entire learning dynamics of both ILC schemes,based on which necessary and sufficient conditions for their stability can be provided.A numerical example is included to validate the theoretical analysis.展开更多
To the Editor:Remimazolam besylate is a novel,ultrashort-acting benzodiazepine with a rapid and a predictable onset and offset profile,no accumulation and extended effect,and independence of organ elimination.
The coronavirus disease 2019(COVID-19),caused by SARS-CoV-2,has spread around the world with high mortality.To diagnose promptly and accurately is the vital step to effectively control its pandemic.Dynamic characteris...The coronavirus disease 2019(COVID-19),caused by SARS-CoV-2,has spread around the world with high mortality.To diagnose promptly and accurately is the vital step to effectively control its pandemic.Dynamic characteristics of SARSCoV-2-specific antibodies which are important for diagnosis of infection have not been fully demonstrated.In this retrospective,single-center,observational study,we enrolled the initial 131 confirmed cases of COVID-19 at Jin-Yin-Tan Hospital who had at least one-time antibody tested during their hospitalization.The dynamic changes of IgM and IgG antibodies to SARS-CoV-2 nucleocapsid protein in 226 serum samples were detected by ELISA.The sensitivities of IgM and IgG ELISA detection were analyzed.Result showed that the sensitivity of the IgG ELISA detection(92.5%)was significantly higher than that of the IgM(70.8%)(P\0.001).The meantimes of seroconversion for IgM and IgG were6 days and 3 days,respectively.The IgM and IgG antibody levels peaked at around 18 days and 23 days,and then IgM fell to below the baseline level at about day 36,whereas IgG maintained at a relatively high level.In conclusion,antibodies should be detected to aid in diagnosis of COVID-19 infection.IgG could be a sensitive indicator for retrospective diagnosis and contact tracing,while IgM could be an indicator of early infection.展开更多
Due to type-setting error,the affiliation of author Huaqing Shu and Shuzhen Wang was mislabeled.The affiliation footnotes in the byline for Huaqing Shu and Shuzhen Wang should read as given above.We apologized for the...Due to type-setting error,the affiliation of author Huaqing Shu and Shuzhen Wang was mislabeled.The affiliation footnotes in the byline for Huaqing Shu and Shuzhen Wang should read as given above.We apologized for these errors.展开更多
基金supported by the National Natural Science Foundation of China(No.60727002,60774003,60921001,90916024)the COSTIND(No.A2120061303)the National 973 Program(No.2005CB321902)
文摘This paper deals with the iterative learning control （ILC） design for multiple-input multiple-output （MIMO）,time-delay systems （TDS）.Two feedback ILC schemes are considered using the so-called two-dimensional （2D） analysis approach.It shows that continuous-discrete 2D Roesser systems can be developed to describe the entire learning dynamics of both ILC schemes,based on which necessary and sufficient conditions for their stability can be provided.A numerical example is included to validate the theoretical analysis.
文摘To the Editor:Remimazolam besylate is a novel,ultrashort-acting benzodiazepine with a rapid and a predictable onset and offset profile,no accumulation and extended effect,and independence of organ elimination.
文摘The coronavirus disease 2019(COVID-19),caused by SARS-CoV-2,has spread around the world with high mortality.To diagnose promptly and accurately is the vital step to effectively control its pandemic.Dynamic characteristics of SARSCoV-2-specific antibodies which are important for diagnosis of infection have not been fully demonstrated.In this retrospective,single-center,observational study,we enrolled the initial 131 confirmed cases of COVID-19 at Jin-Yin-Tan Hospital who had at least one-time antibody tested during their hospitalization.The dynamic changes of IgM and IgG antibodies to SARS-CoV-2 nucleocapsid protein in 226 serum samples were detected by ELISA.The sensitivities of IgM and IgG ELISA detection were analyzed.Result showed that the sensitivity of the IgG ELISA detection(92.5%)was significantly higher than that of the IgM(70.8%)(P\0.001).The meantimes of seroconversion for IgM and IgG were6 days and 3 days,respectively.The IgM and IgG antibody levels peaked at around 18 days and 23 days,and then IgM fell to below the baseline level at about day 36,whereas IgG maintained at a relatively high level.In conclusion,antibodies should be detected to aid in diagnosis of COVID-19 infection.IgG could be a sensitive indicator for retrospective diagnosis and contact tracing,while IgM could be an indicator of early infection.
文摘Due to type-setting error,the affiliation of author Huaqing Shu and Shuzhen Wang was mislabeled.The affiliation footnotes in the byline for Huaqing Shu and Shuzhen Wang should read as given above.We apologized for these errors.
