A new mechanism to control attention focus formation and switching in the model of selective attention is suggested and studied. The model is based on an oscillatory neural network (ONN) with the star-like architecture and phase shifts in connections between oscillators. Attention is modelled as a dynamical mode of partial synchronisation between a particular subgroup of oscillators and the cen...

This paper addresses pre-FFT synchronisation for orthogonal frequency division multiplex (OFDM) under varying multipath conditions. To ensure the most efficient data transmission possible, there should be no constraints on how much of the cyclic prefix (CP) is occupied by intersymbol interference (ISI). Here a solution for timing synchronisation is proposed, that is, robust even when the strong...

Cell signaling, gene expression, and metabolism are affected by cell-cell heterogeneity and random changes in the environment. The effects of such fluctuations on cell signaling and gene expression have recently been studied intensively using single-cell experiments. In metabolism heterogeneity may be particularly important because it may affect synchronisation of metabolic oscillations, an imp...

Résumé. Avec les extensions d’UML 2.0, les réseaux de Petri, utilisés comme cadre sémantique formel pour les diagrammes d’activité d’UML, ne permettent plus d’exprimer les nouvelles constructions de haut niveau telles que la traverse-to-completion. Cette dernière nécessite une synchronisation globale entre les nœuds fork et join, totalement absente dans les réseaux de Petri ordinaires offrant u...

We discuss the possibility of simultaneous and sequential synchronisation in vertical and horizontal arrays of unidirectionally coupled discrete systems. This is realized for the specific case of two dimensional Gumowski-Mira maps. The synchronised state can be periodic, thereby bringing in control of chaos, or chaotic for carefully chosen parameters of the participating units. The synchronised...

The synchronisation of time and frequency between remote locations is crucial for many important applications. Conventional time and frequency dissemination often makes use of satellite links. Recently, the communication fibre network has become an attractive option for long-distance time and frequency dissemination. Here, we demonstrate accurate frequency transfer and time synchronisation via ...

The concept of multiagent-based simulation introduces the agent programming paradigm to simulation. Multiagent systems ease the implementation of software systems to control complex business processes, such as supply chain management (SCM). Problem complexity is decreased by abolishing monolithic programs. Instead, decision-making is delegated to software agents as local entities. This allows c...

Concurrent programs running on weak memory models exhibit relaxed behaviours, making them hard to understand and to debug. We examine how to constrain the behaviour of such programs via synchronisation to ensure what we call their stability, i.e. that they behave as if they were running on a stronger model than the actual one, for example Sequential Consistency (SC). First, we define sufficient...

Concurrent programs running on weak memory models exhibit relaxed behaviours, making them hard to understand and to debug. To use standard verification techniques on such programs, we can force them to behave as if running on a Sequentially Consistent (SC) model. Thus, we examine how to constrain the behaviour of such programs via synchronisation to ensure what we call their stability, i.e. tha...