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In this paper, we proposed an ordinary differential equation model for the transmission of Hepatitis B virus (BHV). The model accounted for the susceptible, exposed, infected, Chronic, and removed classes. We obtained the model's disease-free and endemic equilibrium points and the effective reproductive number. Further, from a thorough sensitivity analysis of the effective reproductive number, we...
In this work, we present some results showing the controllability of the linear Schrödinger equation with complex potentials. Firstly we investigate the existence and uniqueness theorem for solution of the considered problem. Then we find the gradient of the cost functional with the help of Hamilton-Pontryagin functions. Finally we state a necessary condition in the form of variational inequality...
The paper presents an econometric evaluation of possibilities of effective
control in a system of ‘transport-reserves’ type with an emergency supply. The system
consists of one sender of resources and one receiver of resources, and has a stock
reservoir, which secures continuous operation of the receiver even if there is a supply failure.
The effectiveness of the system operation (in economical...
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