In mono-modal logic there is a fair number of high-powered results on completeness covering large classes of modal systems, witness for example Fine [74,85] and Sahlqvist [75]. Mono-modal logic is therefore a well-understood subject in contrast to poly-modal logic where even the most elementary questions concerning completeness, decidability etc. have been left unanswered. Given that so many ap...

Naive T cells undergo homeostatic proliferation in lymphopenic mice, a process that involves TCR recognition of specific self peptide/MHC complexes. Since costimulation signals regulate the T cell response to foreign Ags, we asked whether they also regulate homeostatic expansion. We report in this study that homeostatic expansion of CD4 and CD8 T cells occurs independently of costimulation sign...

Optical cavities are of central importance in numerous areas of physics, including precision measurement, cavity optomechanics and cavity quantum electrodynamics. The miniaturisation and scaling to large numbers of sites is of interest for many of these applications, in particular for quantum computation and simulation. Here we present the first scaled microcavity system which enables the creat...

NC Med J March/April 2010, Volume 71, Number 2 One of the most important choices seniors face as they retire is where and how they are going to spend their retirement years. Some will choose to age in the home that they have lived in most of their life. Many who can afford it will choose to join a continuing care retirement community (CCRC) that offers a full range of housing choices, onsite he...