Abstract: In cluster-based Internet of Things environments, drones are increasingly being deployed for data collection tasks due to their agility and flexibility. However, the limited energy capacity ...

The Census Tree is the largest-ever database of record links among the historical U.S. censuses, with over 700 million links for people living in the United States between 1850 and 1940. These ...

Oak Ridge National Laboratory collects, curates, and delivers unique geospatial datasets that offer a full picture of human activities, the natural and built environment, and the interactions among ...