Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Abstract: Visualizing information inside objects is an everlasting need to bridge the world from physics, chemistry, and biology to computation. Among all tomographic techniques, terahertz (THz) ...

Ohio University is ranked among the Best Global Universities by U.S. News & World Report, with its physics program among the best in the world. Students explore yesterday, today and tomorrow in search ...

This is the open source version of Scratch 2.0 and the core code for the official version found on http://scratch.mit.edu. This code has been released under the GPL ...

During this time, advancing optical technology repeatedly opened new sub-fields of atomic, molecular and solid-state science, most notably real-time chemistry 4. It also became possible to do ...