The role of nonhydrodynamic relaxing processes in collective dynamics of pure liquids is studied within a generalized collective modes approach. A five-variable model of generalized hydrodynamics is solved analytically in long-wavelength limit. Among five collective modes we found three hydrodynamic and two relaxing kinetic excitations. Two latter ones describe the viscous and heat relaxation i...

Electron-ion collisions are one of the main processes that drive the relaxation towards equilibrium. Most theoretical approaches of the connected energy transfer consider only independent binary collisions (see, e.g., Refs. [1-3]); collective excitations are neglected. Although decoupled electron-ion modes have only small effects [4], Dharmawardana & Perrot found strongly reduced energy transfe...

In the literature of collective intentions, the ‘we-intentions’ that lie behind cooperative actions are analysed in terms of individual mental states. The core forms of these analyses imply that all Nash equilibrium behaviour is the result of collective intentions, even though not all Nash equilibria are cooperative actions. Unsatisfactorily, the latter cases have to be excluded either by stipu...

Many applications of swarm robotics require autonomous navigation in unknown environments. We describe a new collective navigation strategy based on diffusion limited aggregation and bacterial foraging behaviour. Both methods are suitable for typical swarm robots as they require only minimal sensory and control capabilities. We demonstrate the usefulness of the strategy with a swarm that is cap...

Collective wage bargaining is an old, yet alien concept for Chinese enterprises. It is old because it was put forward as early as in the 1980s and formalized in the 1994 Labour Law. Nonetheless, collective wage bargaining was alien to most Chinese enterprises because according to the 1994 Labour Law the implementation of collective wage bargaining was voluntary and few enterprises carried it ou...

The convergence behaviour is investigated of solution algorithms for the anisotropic Poisson problem on partially ordered, sparse families of regular grids in 3D. In order to study multilevel techniques on sparse families of grids, first we consider the convergence of a two-level algorithm that applies semi-coarsening successively in each of the coordinate directions. This algorithm shows good ...

The physical difficulty of conveying appropriate social interactions between drivers expresses itself in aggression, selfish driving and anti-social behaviour. By building computers that convey/understand social cues/context, technologists can dramatically improve collective decision making. Existing research on Intelligent Transport Systems (ITS) has not capitalised on recent advances in socia...

Very simple organisms, such as the single-celled amoeboid slime mould Physarum polycephalum possess no neural tissue yet, despite this, are known to exhibit complex biological and computational behaviour. Given such limited resources, can environmental stimuli play a role in generating the complexity of slime mould’s behaviour? We use a multi-agent collective model of slime mould to explore a t...

Dispersal and migration are superficially similar large-scale movements, but which appear to differ in terms of inter-individual behavioural synchronization. Seasonal migration is a striking example of coordinated behaviour, enabling animal populations to track spatio-temporal variation in ecological conditions. By contrast, for dispersal, while social context may influence an individual's emig...

K e y words: T r a i l f o l l o w i n g Ant trail pheromone Se l f -organ iza t ion Collective behaviour Low vs high traffic networks