AUTHOR=Noh Hae , Jazizadeh Farrokh , Zhang Pei TITLE=Editorial: Sensor Systems for Energy-Efficient Buildings, Cities, and Transportation (BuildSys 2019) JOURNAL=Frontiers in Built Environment VOLUME=6 YEAR=2021 URL=https://www.frontiersin.org/journals/built-environment/articles/10.3389/fbuil.2020.631441 DOI=10.3389/fbuil.2020.631441 ISSN=2297-3362