Meikang Han, our visiting student from Northwestern Polytechnical University (NWPU) in Xi’an, China, has been ranked #1 among all PhD candidates at NWPU in 2017. The rank depends on student’s achievements in the past year (papers, patents, funding, etc.). In 2017, he published 11 papers (4 first-author papers and 7 co-authored papers, 3 papers are…