The authors acknowledge the constructive comments of the anonymous reviewers and the editor-inchief,which helped to improve the study.Jamal Jokar Arsanjani was funded by the Alexander von Humboldt foundation.
OpenStreetMap(OSM)has seen an exponential increase in the last few years and large volumes of geodata have been received from volunteered individuals.The collected geodata are heterogeneous in terms of different dimen...
The Digital Earth(DE)movement is gaining momentum.Much of it is unstructured.This paper examines a number of recent developments including those in health sensors(Wearable Absence,Q-Sensor,and Guardian Angels)and syst...