"If we can find the Mars Polar Lander and be convinced we understand what we’re looking at, it might provide some clues as to what went wrong," says Alfred McEwen of the University of Arizona in Tucson, US. "There could be lessons there that are applicable to future landers."“如果我...
Flowchart depicting the procedure for a full probabilistic spatio-temporal volcanic hazard assessment.aStep ‘0’ (Data files for R) and Step ‘0.5’ (R).bStep ‘1’ (Spatial probability analysis).cStep ‘2’ (Temporal probability analysis).dStep ‘3’ (Probabilistic volcanic hazard analysis) ...
"If we can find the Mars Polar Lander and be convinced we understand what we’re looking at, it might provide some clues as to what went wrong," says Alfred McEwen of the University of Arizona in Tucson, US. "There could be lessons there that are applicable to future landers."“如果我...
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Gosper, R. W. "harmonic Summation and exponential gfs." math-fun@cs.arizona.edu posting, Aug. 2, 1996.Havil, J. Gamma: Exploring Euler's Constant. Princeton, NJ: Princeton University Press, 2003.Hoffman, P. The Man Who Loved Only Numbers: The Story of Paul Erdős and the Search ...