Exploring Vulnerable Areas on the Death Anxiety of the Older Adults during First and Second Wave of the COVID-19 : Evidence from the 2020 Korea Community Health Survey
Atmospheric PM<SUB>10</SUB> and PM<SUB>2.5</SUB> Concentration Changes After the Spread of Coronavirus Disease 2019(COVID-19) in Comparison with Road Traffic Volume in Busan Metropolitan City
A Preliminary Study on Alternative Research Methods for Area Studies under the Constraints of Mobility in the COVID-19 Era : Focusing on Virtual Qualitative Research Methods