For years, scientists have suspected that, at the molecular level, water is two different liquids ‪—‬ a denser one and a less-dense one ‪—‬ that are constantly switching places. Catching real ...

A graphic of a T-7 Red Hawk with digital elements. (Breaking Defense graphic, original assets via DVIDS/Getty) WASHINGTON — On the verge of approving the T-7 Red Hawk for production, the Air Force ...

As a condition of using these data, you must cite the use of this data set. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility. Other ...

Abstract: Multi-task assignment is widely used in mobile crowdsensing (MCS) to efficiently utilize limited resources such as shared user pool, user capability constraints and so on. In MCS, users need ...