Bayesian inference COTS commercial MAPS COVID-19 (Disease) COVID-19 Pandemic, 2020- Compton edge reconstruction Education and state G(E) function Technology: general issues air insulation deep autoencoder deep learning dose rate uncertainty energy broadening correction gain gamma ray detector gamma spectral analysis gamma-ray gaussian process regression ground-penetrating radar high-energy α-particle detection illicit trafficking integral time low voltage low-level radioactive contaminants low-resolution detector national security neutron non-proliferation nuclear decommissioning nuclear wastes