Abstract: A method includes sensing sound reflections from a living body and determining frequency intensities in the sound reflections at each of a sequence of time windows. The frequency intensities are then used to predict the presence of liver cancer.

Abstract: A method of training a supervised neural network to solve an optimization problem that involves minimizing an error function ƒ(?) where ? is a vector of independent and identically distributed (i.i.d.) samples of a target distribution £t is proposed. The method includes generating an adversarial probabilistic regularizer (APR) ?£t(?) using a discriminator of a generative adversarial network. The discriminator receives samples from ? and samples from a regularizer distribution pr as inputs. The APR ?£t(?) is then added to the error function ƒ(?) for each training iteration of the supervised neural network.

Abstract: A gas turbine engine includes a fuel-oil heat exchange system in which the fuel is continuously heated by a primary hot oil flow in a primary fuel-oil heat exchanger and the fuel is selectively heated in a secondary fuel-oil heat exchanger by a secondary hot oil flow selectively passing through or bypassing a secondary fuel-oil heat exchanger, controlled by a thermal valve.

Abstract: A gas turbine engine includes a fuel-oil heat exchange system in which the fuel is continuously heated by a primary hot oil flow in a primary fuel-oil heat exchanger and the fuel is selectively heated in a secondary fuel-oil heat exchanger by a secondary hot oil flow selectively passing through or bypassing a secondary fuel-oil heat exchanger, controlled by a thermal valve.