Two models are presented of real-time exchange and price adjustment for a system of interrelated markets mediated by trade specialists. The first (MBM) features partially decentralized barter exchange in which specialists continuously maintain inventories and periodically adjust prices. A 'correspondence principle' yields existence and efficiency of (steadystate) equilibrium. Local stability fo...

Methods A national survey of 1,000 practicing ID physicians in the United States was conducted in 2010. The IM modalities studied were mind-body based modalities (MBM), biologically based modalities (BBM), manipulative and bodybased modalities (MBBM), energy based modalities (EBM) and whole medical systems (WMS). Participants were asked to indicate their familiarity of each modality. If they we...

It has been suggested that circumstellar disks evolve from dense, actively accreting structures to low-mass, replenished remnants. During this transition, grains may assemble into planetesimals, or the disk may be cleared by newborn planets. Recently identified nearby groups of young stars provide valuable laboratories for probing disk evolution. I discuss the properties of dust disks in the TW...

We present the ROSAT PSPC pointed and ROSAT All-Sky Survey (RASS) observations and the results of our low and high spectral resolution optical followup observations of the T Tauri stars (TTS) and X-ray selected T Tauri star candidates in the region of the high galactic latitude dark cloud MBM12 (L1453-L1454, L1457, L1458). Previous observations have revealed 3 “classical” T Tauri stars and 1 “w...