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<http://webisa.webdatacommons.org/prov/507237933>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/164625657> .
<http://webisa.webdatacommons.org/164625657>	<http://www.w3.org/ns/prov#value>	"20140142885Method and Apparatus for Determining Walking Direction for a Pedestrian Dead Reckoning Process - The present invention relates generally to position determination, and more particularly to methods and apparatuses to determine the walking direction (heading of a user) using MEMS inertial sensors commonly found in mobile devices such as cellphones." .
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