Polytrauma is a highly relevant problem from both scientific and clinical perspectives due to its high mortality rate (>20% in young middle-aged individuals >45% the elderly). The lack of consensus definition polytrauma complicates data collection comparison available datasets. In addition, selection most appropriate management strategy determining quality medical care magnitude invested ...

Spectral analysis considers the problem of determining (the art of recovering) the spectral content (i.e., the distribution of power over frequency) of a stationary time series from a finite set of measurements, by means of either nonparametric or parametric techniques. This paper introduces the spectral analysis problem, motivates the definition of power spectral density functions, and reviews...

"Through systems analysis and synthesis, we may add, delete, and modify system components toward our goal of improving the overall system. "Moving from the theoretical definition to something a bit more contemporary, Systems analysis is a term that collectively describes the early phases of systems development. There has never been a universally accepted definition. And there has never been agr...

Efficient problem-solving in any physical domain requires two main capabilities : the ability to ignore detail by reasoning at different levels of resolutio n (abstraction), and the ability to ignore irrelevant information by incorporatin g constraints and assumptions (simplification) . Existing analysis methods for mechanical devices derive qualitative descriptions of a mechanism's kinemati c ...

Definition 1.3. The most natural way to define higher ramification subgroups of the Galois group G is due by Hilbert: g ∈ Ga if and only if vl(gx− x) ≥ a + 1, ∀x ∈ Ol. Indeed, G−1 = G, G0 = I is the inertia subgroup, and G1 = W is the wild inertia subgroup. However, there is a disadvantage of this. Namely, it does not respect quotient and hence it does not give a filtration on the absolute Galo...

The new generation of technology-savvy students currently enrolled in and entering college possesses unprecedented IT skill levels. They think about and use technology radically differently from earlier student cohorts. As a consequence, we expected to find that such students would demand greater use of technology in teaching and learning in the classroom. They did not. What we found was a mode...

We study several functions that have been proposed for comparing transport routes for a hazardous materials shipment. We show that many proposed path evaluation functions are based on an approximation. While these functions can be modified to avoid the approximation, these more accurate versions violate two reasonable axioms. We propose a new family of models by redefining the decision problem ...