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Often there are major challenges in developing diverse and complex human mobility metrics systematically and quickly.
The ever-changing cellular communication landscape makes it difficult to identify, map, and localize commercial and private cellular base stations (PCBS).
Method to operate a compression ignition engine in dual fuel operation with premixed turbulent flame propagation from low to high loads.
High strength, oxidation resistant refractory alloys are difficult to fabricate for commercial use in extreme environments.
