We consider a stochastic model of clock synchronization in a wireless network consisting of N sensors interacting with one dedicated accurate time server. For large N we find an estimate of the final time sychronization error for global and relative synchronization. Main results concern a behavior of the network on different time scales tN → ∞, N → ∞. We discuss existence of phase transitions a...

Since long-lived computations (e.g. workflow systems) cannot be realized with classical transactions, extended models have been developed to support this special class of executions with proper semantics. The main problem with these new models is the lack of an extended concurrency control mechanism which makes it possible to use all advanced features of the new methods. This article presents a...

This paper is a first attempt to study the problem of handling software replication in three tiers architectures. In particular a study based on sychronization and communication patterns imposed by replication is presented. We show how the complexity of the replication scheme is affected by the determinitic (or not) behavior of the members of the backtier. We also give two generic synchronizati...

abstract: in this paper a control scheme for grid-connected operation mode and the island state of distributed generation is presented. in normal conditions, every inverter dg system in micro-grids to supply a preset power, normally operate in a constant current control mode. when micro-grids removed from the network, dg inverter of each system must recognize the island and change position to v...

We implement a method to identify the deterministic nature of specific events in the dynamics of a semiconductor laser subject to time-delayed optical feedback. Specifically, we study the power dropouts in the low-frequency fluctuations regime on an individual event basis and identify whether the underlying dominant mechanism is deterministic. Our approach is based on sychronization with a twin...

This paper investigated how speakers synchronize their speech by experiments in which the participants naturally and simultaneously recited under auditory delayed conditions. Statistical analysis revealed that the speakers changed strategies to adjust the timing of their utterances. This finding constitutes one fundamental mechanism for coordinating verbal behavior that can contribute to design...

With the explosive growth of the Internet and distributed computing, disributed garbage collection (DGC) has become a very important area of research. Single-processor garbage collection is by itself one of the challenging areas of research in computer science. In distributed environments, the problem of garbage collection becomes even harder and more challenging. This is mainly due to the addi...