Because general-purpose planning methods have difficulty with large-scale planning problems, researchers have resorted to hand writing domain-specific planners to solve them. An interesting alternative is to use example plans to demonstrate how to solve problems in a particular domain and to use that information to automatically learn domain-specific planners. In this paper, we present the Loop...

Long time asymptotics are developed here for an Allen-Cahn/Cahn-Hilliard system derived recently by Cahn & Novick-Cohen [11] as a di use interface model for simultaneous orderdisorder and phase separation. Proximity to a deep quench limit is assumed, and spatial scales are chosen to model Krzanowski instabilities in which droplets of a minor disordered phase bounded by interphase boundaries (IP...

In this paper I describe some of the ways in which landscape ecology principles have been incorporated into land use planning and change. In Scotland we have tried developing landscape-scale or regional plans for land use change to resolve issues of habitat fragmentation – the ‘big plans’ of the title. We have also developed ‘little plans’ – much smaller proposals based on individual designated...

The motivation, present status, and future plans of the search for ββ(0ν) decay are reviewed. It is argued that, motivated by the recent observations of neutrino oscillations, there is a reasonable hope that ββ(0ν) decay corresponding to the neutrino mass scale suggested by oscillations, mν ≈ 50 meV, actually exists. The challenges to achieve the sensitivity corresponding to this mass scale, an...