Second order theory of excitations in trapped bose condensates at finite temperatures

We present a finite temperature field theory for collective excitations of trapped Bose condensates which includes the dynamics of the thermal cloud. In spherical traps we show that excitations couple strongly to a small number of modes, giving resonance structure in their frequency spectra. Where possible, we derive energy shifts and lifetimes of excitations. For the l = 0 mode we show that the simple picture of a decay rate fails, which should be observable in suitable experiments. It also suggests a possible explanation for the anomalous behavior of the m = 0 mode observed in anisotropic traps.     

Determining Ambulance Deployment in Santo Domingo,Dominican Republic

In 1983, The Ministry of Health of the Dominican Republic (SESPAS) began planning an emergency medical service (E.M.S.) system for the capital city of Santo Domingo. This paper reports on one component of this effort, the development of options regarding the type of E.M.S. care to be delivered, by whom, via what number of types of equipment, sited at which locations. SESPAS has used the results to develop a plan for a public ‘urgency care’ system quite different from the uncoordinated mix of public, private and voluntary services operating previously. The system has been implemented according to plan with basic life support vehicles staffed by physicians.