Design criteria for achieving an acceptable indoor radon concentration are presented in this paper. The paper suggests three design criteria. These criteria have to be considered at the early stage of the building design phase to meet the latest recommendations from the World Health Organization in most countries. The three design criteria are; first, establishing a radon barrier facing the gro...

Health-based guideline values for the indoor environment Exposure to chemicals, biological agents and physical factors, such as noise and radiation, can be harmful to human health. Health-based guidelines for indoor environments establish the tolerance levels of residential dwellers to these environmental stressors. The primary aim of the guidelines is to enable meaningful assessment of the ind...

Answering what is the bare minimum combination of avionics and vehicle platform design that enables useful autonomous indoor flight without GPS is required to understand the lower cost bounds for indoor UAS technology. The GT Lama indoor Unmanned Aerial System (UAS) capable of autonomously exploring indoor areas in GPS-denied environment discussed here was designed in an attempt to answer this ...