منابع مشابه
Anthropocene rockfalls travel farther than prehistoric predecessors
Human modification of natural landscapes has influenced surface processes in many settings on Earth. Quantitative data comparing the distribution and behavior of geologic phenomena before and after human arrival are sparse but urgently required to evaluate possible anthropogenic influences on geologic hazards. We conduct field and imagery-based mapping, statistical analysis, and numerical model...
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Current Mars rovers travel a few kilometers per year. Future rovers will need to travel a couple orders of magnitude faster than that in order to move from safe landing zones to areas of scientific interest – which may be many 10s of kilometers away from a suitable landing location. This paper describes a recent field test of the SR-II rover. SR-II is a 22kg solar powered autonomous rover, whic...
متن کاملMales migrate farther than females in a differential migrant: an examination of the fasting endurance hypothesis
Patterns of migration including connectivity between breeding and non-breeding populations and intraspecific variation in the distance travelled are important to study because they can affect individual fitness and population dynamics. Using data from 182 band recoveries across North America and 17 light-level geolocators, we examined the migration patterns of the northern flicker (Colaptes aur...
متن کاملTrade related infections: farther, faster, quieter
Modern global trading traffics large volumes of diverse products rapidly to a broad geographic area of the world. When emergent infections enter this system in traded products their transmission is amplified. With truly novel emergent infections with long incubation periods, such as Human Immunodeficiency Virus (HIV) or variant Creutzfeld Jacob Disease (vCJD), this transmission may silently dis...
متن کاملFarther Than You May Think: An Empirical Investigation of the Proximity of Users to Their Mobile Phones
Implicit in much research and application development for mobile phones is the assumption that the mobile phone is a suitable proxy for its owner’s location. We report an in-depth empirical investigation of this assumption in which we measured proximity of the phone to its owner over several weeks of continual observation. Our findings, summarizing results over 16 different subjects of a variet...
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ژورنال
عنوان ژورنال: QJM: An International Journal of Medicine
سال: 2017
ISSN: 1460-2725,1460-2393
DOI: 10.1093/qjmed/hcx002