Ethnic conflict: geography of

Much ethnic conflict is territorially based. From a geographical perspective, ethnic conflict can be viewed at three scales—the inter-state, the intra-state and the micro, predominantly urban level. However conflicts at the three scales are intimately connected and interact with each other. The outcomes of conflict can produce secession, or at least some degree of separation of the groups concerned. Again, this can be viewed across a range of scale levels. A number of territorially based solutions or at least means of regulating ethnic conflict can be delineated—territoriality, dominance, and mutuality.

Computational challenges in atomic, molecular and optical physics

Six challenges are discussed. These are the laser-driven helium atom; the laser-driven hydrogen molecule and hydrogen molecular ion: electron scattering (with ionization) from one-electron atoms; the vibrational and rotational structure of molecules such as H-3(+) and water at their dissociation limits; laser- heated clusters; and quantum degeneracy and Bose-Einstein condensation. The first four concern fundamental few-body systems where use of high-performance computing (HPC) is currently making possible accurate modelling from first principles. This leads to reliable predictions and support for laboratory experiment as well as true understanding of the dynamics. Important aspects of these challenges addressable only via a terascale facility are set out. Such a facility makes the last two challenges in the above list meaningfully accessible for the first time, and the scientific interest together with the prospective role for HPC in these is emphasized.