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10.1016/j.rinp.2021.104311 http://scihub22266oqcxt.onion/10.1016/j.rinp.2021.104311 34094820!8168522!34094820     free     free     free Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Results+Phys 2021 ; 26 (ä): 104311 Nephropedia Template TP {{tp|p=34094820|t=2021. Controlling of pandemic COVID-19 using optimal control theory |pdf=|usr=}}{{34094820}} gab.com Text Controlling of pandemic COVID-19 using optimal control theory JO: Results Phys http://www.kidney.de/pget.php?&tw=1&pmid=34094820 #FOAvip In 2019, a new infectious disease called pandemic COVID-19 began to spread from Wuhan, China. In spite of the efforts to stop the disease, being out of the control of the governments it spread rapidly all over the world. From then on, much research has been done in the world with the aim of controlling this contagious disease. A mathematical model for modeling the spread of COVID-19 and also controlling the spread of the disease has been presented in this paper. We find the disease-free equilibrium points as trivial equilibrium (TE), virus absenteeism equilibrium (VAE) and virus incidence equilibrium (VIE) for the proposed model; and at the trivial equilibrium point for the presented dynamic system we obtain the Jacobian matrix so as to be used in finding the largest eigenvalue. Radius spectral method has been used for finding the reproductive number. In the following, by adding a controller to the model and also using the theory of optimal control, we can improve the performance of the model. We must have a correct understanding of the system i.e. how it works, the various variables affecting the system, and the interaction of the variables on each other. To search for the optimal values, we need to use an appropriate optimization method. Given the limitations and needs of the problem, the aim of the optimization is to find the best solutions, to find conditions that result in the maximum of susceptiblity, the minimum of infection, and optimal quarantination. Twit Text FOAVip Controlling of pandemic COVID-19 using optimal control theory ????Results Phys http://www.kidney.de/pget.php?&tw=1&pmid=34094820 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=34094820 #FOAvip English Wikipedia <ref>{{Cite pmid|34094820}}</ref> Controlling of pandemic COVID-19 using optimal control theory #MMPMID34094820 Seddighi Chaharborj S; Seddighi Chaharborj S; Hassanzadeh Asl J; Phang PS Results Phys 2021[Jul]; 26 (ä): 104311 PMID34094820show ga In 2019, a new infectious disease called pandemic COVID-19 began to spread from Wuhan, China. In spite of the efforts to stop the disease, being out of the control of the governments it spread rapidly all over the world. From then on, much research has been done in the world with the aim of controlling this contagious disease. A mathematical model for modeling the spread of COVID-19 and also controlling the spread of the disease has been presented in this paper. We find the disease-free equilibrium points as trivial equilibrium (TE), virus absenteeism equilibrium (VAE) and virus incidence equilibrium (VIE) for the proposed model; and at the trivial equilibrium point for the presented dynamic system we obtain the Jacobian matrix so as to be used in finding the largest eigenvalue. Radius spectral method has been used for finding the reproductive number. In the following, by adding a controller to the model and also using the theory of optimal control, we can improve the performance of the model. We must have a correct understanding of the system i.e. how it works, the various variables affecting the system, and the interaction of the variables on each other. To search for the optimal values, we need to use an appropriate optimization method. Given the limitations and needs of the problem, the aim of the optimization is to find the best solutions, to find conditions that result in the maximum of susceptiblity, the minimum of infection, and optimal quarantination. äControlling of pandemic COVID-19 using optimal control theory (epmc).pdf DeepDyve Pubget Overpricing