In this paper, we introduce a hybrid approach based on neural network and optimization teqnique to solve ordinary differential equation. In proposed model we use heyperbolic secont transformation function in hiden layer of neural network part and bfgs teqnique in optimization part. In comparison with existing similar neural networks proposed model provides solutions with high accuracy. Numerica...

Accurate and efficient modeling and simulation approaches are essential for design, analysis, diagnosis, and prognosis of complex embedded systems. This paper presents an efficient simulation scheme for systems with mixed continuous and discrete behaviors. We model hybrid systems using hybrid bond graphs (HBGs), a multi-domain physics-based modeling language that incorporates local switching fu...

INTRODUCTION High-fidelity simulation is frequently utilized in medical education. Its use in the neurosciences is limited by the inherent limitations of the manikin to simulate neurological changes. We report here the use of a hybrid simulation - a combination of lecture and high-fidelity manikin - in the education of neurosciences nurses, involved in care of neurocritical care patients. MET...

Radio capacity simulation tools are gaining a large importance with the development of mobile networks. System radio simulators that are currently used in standardization bodies are becoming increasingly complex as they have to work on two time scales: the scale of ”milliseconds” for modeling the behavior of schedulers and the scale of ”tens of seconds” for modeling the dynamic behavior of arri...

This work discusses practical issues and applications of the QSS3 method introduced in the companion paper. The method rules are translated into a discrete event model within the DEVS formalism and implemented in a simulation software. The method is then tested with the simulation of two relatively complex hybrid systems and the results are then compared with all Matlab/Simulink ODE solvers. Th...

A library of components for modelling hybrid automata in a natural fashion has been implemented in Modelica. This library exploits and extends the free Modelica library StateGraph to the modelling and simulation of deterministic hybrid systems described by the hybrid automaton formalism. In this contribution the library’s main features are described and its flexibility highlighted by developing...

There is a gap between the modelling and the simulation of discontinuous dynamical systems (DDS) exhibiting sliding-mode behaviour. Several challenges arise. Mainly, the definition of unique solutions on the discontinuity surfaces and at their crossings. There are also numerical issues in the detection and location of the trajectory entering and going out of the discontinuity surface, as well a...

This work describes a simulation study of client-server architectures, and a UNIX-based le system with multimedia extensions. An interactive multime-dia workload is used to compare the throughput and scalability of the traditional and a new hybrid client-server architecture. Simulation results indicate that the hybrid client-server, combined with the multime-dia le system, is a promising distri...