This paper is concerned with mean-field stochastic linear-quadratic (MF-SLQ, for short) optimal control problems deterministic coefficients. The notion of weak closed-loop strategy introduced. It shown that the open-loop solvability equivalent to existence a strategy. Moreover, when controls exist, there at least one them admitting state feedback representation, whi...

We consider the optimal control problem of determining electromagnetic pulses for implementing logical gates in a closed quantum system, where Hamiltonian models dynamics coupled superconducting qudits. The state is governed by Schrodinger's equation, which we formulate terms real and imaginary parts vector solve Stormer-Verlet scheme, symplectic partitioned Runge-Kutta method. A novel paramete...

This paper analyzes a discrete-time $Geo/Geo/c$ queueing system with multiple working vacations and reneging in which customers arrive according to a geometric process. As soon as the system gets empty, the servers go to a working vacations all together. The service times during regular busy period, working vacation period and vacation times are assumed to be geometrically distributed. Customer...

the present paper is aimed at describing a “closed cycle” power plant schematic (soft, solar oxygen fuel turbine) with macroalgae (seaweed) cultivation in a pond, combustion of its organic matter in a fluidized bed boiler of rankine cycle and return of the combustion products to the pond to feed algae. the oxygen used for combustion is released to atmosphere in photosynthesis. as a renewable fu...

in this paper, simultaneous control of source terms is considered in a vibrational string problem.in the considered problem, the terms to be controlled are the force and the initial velocity functions. we statethe generalized (weak) solution about the considered problem. the existence and uniqueness of the solutionfor optimal control problem is investigated. the frechet derivative of the functi...

Arenas et al. [1] introduced the notion of lambda-closed sets as a generalization of locally closed sets. In this paper, we introduce the notions of lambda-locally closed sets, Lambda_lambda-closed sets and lambda_g-closed sets and obtain some decompositions of closed sets and continuity in topological spaces.

The goal of this work is to build semi-analytical solutions the Rikitake-type system by means optimal homotopy perturbation method (OHPM) using only two iterations. chaotic behaviors are excepted. By taking into consideration geometrical properties system, closed-form can be established. obtained have a periodical behavior. These allow reducing initial second-order nonlinear differential equati...

This study proposes a combination of a fuzzy sliding mode controller (FSMC) with integral-proportion-Derivative switching surface based superconducting magnetic energy storage (SMES) and PID tuned by a multi-objective optimization algorithm to solve the load frequency control in power systems. The goal of design is to improve the dynamic response of power systems after load demand changes. In t...

closed-loop supply chain network (clscn) design aims at incorporating environmental considerations into the traditional supply chain design by including recycling, disassembly and reuse activities. in a clscn, the environmental considerations can also be facilitated by resorting to environmentally friendly materials and enhancing product reuse through the design of an appropriate product recove...