A review of the etiology, clinical, radiological, differential diagnosis and management goals of segmental instability is presented.

A novel and efficient technique is developed for estimating the local error per step when firstand second-order accurate projective integrators are applied to stiff multiscale systems. The estimation can be done on-the-fly; that is, the accumulated local error is readily estimated at the end and during the course of computing the solution at each outer time step. We demonstrate the effectivenes...

The majority of cases of childhood typhoid fever diagnosed in the United States occur in persons recently returned from travel abroad. We report two childhood cases of typhoid fever acquired in Mexico and India and diagnosed in an urban United States setting. This report describes these cases and provides insights into the pitfalls in recognizing this condition in a nonendemic setting as well a...

Recently, the complete characterization of a general Gaussian dissipative system having a unique pure steady state was obtained. This result provides a clear guideline for engineering an environment such that the dissipative system has a desired pure steady state such as a cluster state. In this paper, we describe the system in terms of a quantum stochastic differential equation (QSDE) so that ...