The coronavirus disease 2019 (COVID-19) has caused devastating public health, economic, political, and societal crises. We performed a comparison study of COVID-19 outbreaks in states with Republican governors versus Democratic the United States between April 2020 February 2021. This research shows that 1) had tested more people for have higher testing rates than those governors; 2) confirmed c...

A method is described for set-point tracking in nonlinear systems when pointwise-in-time input and/or state inequality constraints are to be enforced. It consists of adding to a primal compensated system a nonlinear device called command governor (CG) whose action is based on the current state, set-point and prescribed constraints. The CG selects at any time the system input via a receding-hori...

In this paper we study the monetary and fiscal policy making in a monetary union when authorities face asymmetries in the countries constructing this monetary union. We analyze this problem in an asymmetric environment using a two-country theoretical model and by introducing two alternative types of national asymmetries : asymmetric shocks and the asymmetric transmission mechanism. The central ...

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Reference and command governors are add-on schemes that augment nominal closed-loop systems with the capability to enforce state control constraints. They do this by monitoring modifying, when necessary, reference command. Existing solving at each sampling time a quadratic programming problem find modified closest original such current pair constraint admissible. In paper, we show simple modifi...