Complex sentence: Stuart K. Card (born ca.1946), an American researcher and Senior Research Fellow at Xerox PARC, is considered to be one of the pioneers of applying human factors in human--computer interaction.
Split into simpler sentences: Stuart K. Card (born ca.1946) is an American researcher and Senior Research Fellow at Xerox PARC. He is considered to be one of the pioneers of applying human factors in human--computer interaction.