The Nagumo-Sato (NS) model is a one-dimensional piecewise linear map that describes simplified dynamics of a single neuron. The NS model and its network extension, coupled Nagumo-Sato models, exhibit complex behavior both in their transient dynamics and after converging to periodic orbits. However, the way the period and the transient length change against the parameters is not completely under...

The radio-over-fiber (RoF) technology is a suitable solution to provide high bitrates and to improve the IEEE 802.11 WLAN coverage. Those systems use an optical network to distribute the radio signal from the access point to several remote antennas. Our research project consist in the investigation of the Medium Control Access (MAC) layer performance of those networks. We decided to achieve our...

The crystal structure of the oxidized Trichomonas vaginalis ferredoxin (Tvfd) showed a unique crevice that exposed the redox center. Here we have examined the dynamics and solvation of the active site of Tvfd using molecular dynamics simulations of both the reduced and oxidized states. The oxidized simulation stays true to the crystal form with a heavy atom root mean-squared deviation of 2 A. H...

A mobile ad hoc network is a collection of autonomous mobile nodes that communicate with each other over wireless links. Such networks are expected to play increasingly important role in future civilian and military settings, being useful for providing communication support where no fixed infrastructure exists or the deployment of a fixed infrastructure is not economically profitable and moveme...

Satellite networks are enhanced permanently: new coding techniques, changes in the allocation algorithm or new technologies. These features are first implemented on a test bed in order to prove their efficiency, but an emulation platform is expensive and its implementation is time consuming. A simulation model can solve these issues, by giving a first try out and another way to obtain measureme...

Network simulation is widely used in network research to evaluate the performance of various network protocols and control algorithms. With the development of computer networks, the network models grow in size and complexity, so the execution time of simulation can be unbearably long. In this paper, we present a practical approach to construct a parallel network simulator which is based on the ...