[1] We have identified a dust storm deposit in the GISP2 ice core that most likely originated from the Great Plains region of the United States during the 1930’s ‘Dust Bowl’ era. These results indicate that the Central U.S. can be a significant source of dust to the Greenland ice sheet, especially when the source area is affected by intense drought conditions.

We describe a new proof of the complete integrability of the two related dynamical systems: the billiard inside the ellipsoid and the geodesic flow on the ellipsoid (in Euclidean, spherical or hyperbolic space). The proof is based on the construction of a metric on the ellipsoid whose nonparameterized geodesics coincide with those of the standard metric. This new metric is induced by the hyperb...

Evidence-based medicine has been defined as the conscientious and judicious use of current best evidence in making clinical decisions. This paper will attempt to explicate the terms “conscientious” and “judicious” within the evidence-based medicine definition. It will be argued that “conscientious” and “judicious” represent virtue terms derived from virtue ethics and virtue epistemology. The id...

...............................................................................................................v 1 The Problem of Understanding Program Behavior....................................1 2 Background: Function-Theoretic Foundations of FSQ Flow Structures..3 3 Function-Theoretic Calculation of Program Behavior ...............................6 4 The Architecture of an Abstraction Engin...