Detection and characterization of inclusions in impedance tomography Judith Riley linear system theory has undergone 9783110089400 linear system theory has undergone a transformation of the sort which always attends the maturation of a theory whose range of applicability is expanding in a fashion governed by technological developments and by the rate at which such advances become a part of engineering practice One of the most salient features of these papers is that they show a major methodological shift in studying the interaction between science and technology The topic of this work are two further developments of the Factorization method for electrical impedance tomography both inclusions with a higher as well as inclusions with a lower conductivity than the background medium