A complex system of spacecraft and ground tracking stations, as well as a constellation of satellites or spacecraft, has to be able to reliably withstand sudden environment changes, resource fluctuations, dynamic resource configuration, limited communication bandwidth, etc., while maintaining the consistency of the system as a whole. It is not known in advance when a change in the environment m...

1 Potsdam Institute for Climate Impact Research, Germany 10 2 School of Geography, University of Nottingham, UK 11 3 NASA Goddard Institute for Space Studies, USA 12 4 Center for Climate Systems Research, Columbia University, USA 13 5 Faculty of Geosciences, Utrecht University, The Netherlands 14 6 Swedens Meteorological and Hydrological Institute, Sweden 15 7 Max Planck Institute for Meteorolo...

This paper gives the structure optimization of fuzzy control systems based on genetic algorithm in the MATLAB environment. The genetic algorithm is a powerful tool for structure optimization of the fuzzy controllers, therefore, in this paper, integration and synthesis of fuzzy logic and genetic algorithm has been proposed. The genetic algorithms are applied for fuzzy rules set, scaling factors ...

This paper deals with the implementation of new proposed strategy for the reduction in the transient time of shunt active filter using intelligent controllers. Intelligent control is a class of control techniques that use various AI computing approaches like fuzzy logic, neural network, evolutionary computation, genetic algorithm etc. The proposed strategy works on the principle of energy of th...

The universality class, even the order of the transition, of the two-dimensional Ising model depends on the range and the symmetry of the interactions (Onsager model, Baxter-Wu model, Turban model, etc.), but the critical temperature is generally the same due to self-duality. Here we consider a sudden change in the form of the interaction and study the nonequilibrium critical dynamical properti...

The results of calculations made by bottom-up linear optimization models (LP) are to some extent determined by the applied optimization strategy. Existing energy system models most commonly employ an optimization strategy which are known as perfect-foresight, i.e. an optimization of the total time period in one system of equations. Perfect foresight means that the model in principle would “know...

in this case we present a previously healthy child with sudden behavioral change and acute confusional state (acs). acs is a neurologic emergency. the clinical manifestations of acs are; confused affect, limited verbal response, disturbance in performing orders, some automatism, stable vital signs and absence of tonic-clonic movements and it has a wide range of differential diagnosis which shou...

in this paper using catastrophe theory, we investigate non-smooth changes in tehran stock exchange. stock market crashes bring not only panic among investors, but also in deeper market lead to recession and decrease in consumer's confidence. as catastrophe theory is strong tool in explaining nonlinear phenomena, by applying stochastic cusp catastrophe model we examine sudden change in tehr...