Nelson Yuan-sheng Kiang, an internationally recognized scientist known for his influential research into speech and hearing, as well as his dedication to enhancing academic exchange between Chinese and American scientists, died March 19 at his home in the Beacon Hill neighborhood of Boston. He was 93. Kiang was a principal research scientist in the Research Laboratory of Electronics (RLE) at MIT, and was a member of the Harvard-MIT Program in Health Sciences and Technology (HST), which at MIT is is housed within the Institute for Medical Engineering and Science (IMES)….