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[1] Observations show that the upper 2 km of the subtropical North Atlantic Ocean cooled throughout 2010 and remained cold until at least December 2011. We show that these cold anomalies are partly driven by anomalous air-sea exchange during the cold winters of 2009/2010 and 2010/2011 and, more surprisingly, by extreme interannual variability in the ocean's(More)
Social networks are often organized into families, friendship groups, and institutional bodies. However, this organization, functional groups of friends and acquaintances especially, may not always be apparent from the characteristics of the individuals or from global measures of network structure. Community detection methods provide a means to identify(More)
We describe a novel approach to planning and interpretation of data collection activities in military environments, based on the notions of perceptual positions of self, other and detached observer when viewing the same event. We have reinterpreted the results of previous field experiments involving the introduction of advanced equipment as part of soldier(More)
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