title: A review on mathematical models for estimating indoor radon concentrations.
abstract: Radiation from natural sources is one of causes of the environmental diseases. Radon is the leading environmental cause of lung cancer next to smoking. To investigate the relationship between indoor radon concentrations and lung cancer, researchers must be able to estimate an individual's cumulative level of indoor radon exposure and to do so, one must first be able to assess indoor radon concentrations. In this article, we outline factors affecting indoor radon concentrations and review related mathematical models based on the mass balance equation and the differential equations. Furthermore, we suggest the necessities of applying time-dependent functions for indoor radon concentrations and developing stochastic models.
authors.affiliation: Department of Mathematics, Ajou University, Suwon, 16499 South Korea.
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Park
authors.affiliation: Department of Humanities and Social Medicine, Ajou University School of Medicine, Suwon, 16499 South Korea.
authors.forename: Dae Ryong
authors.initials: DR
authors.lastname: Kang
authors.affiliation: Department of Applied Statistics, University of Suwon, Hwaseong, 18323 South Korea.
authors.forename: Jinheum
authors.initials: J
authors.lastname: Kim
keywords: Exposure; Indoor concentration; Mathematical model; Radon entry