Abstract: A concrete mixer vehicle includes a mixer drum assembly, an energy storage device, an internal combustion engine, an auxiliary power unit, and an energy management controller. The internal combustion engine is configured to supply power to the mixer drum assembly. The auxiliary power unit is configured to supply power from the energy storage device to the mixer drum assembly. The energy management controller is configured to engage the APU and disengage the ICE based on a state of charge of the energy storage device.

Abstract: Methods and apparatus for monitoring a human or animal subject are disclosed. In one arrangement, test data representing a time-series of physiological measurements performed on a subject in a measurement session is received. A mean trajectory with error bounds is fitted to the test data. A state of the subject is determined by comparing the fitted mean trajectory with error bounds to a stored model of normality. The stored model of normality comprises a library of latent mean trajectories with error bounds. Each latent mean trajectory with error bounds is derived by fitting a hierarchical probabilistic model to a respective one of a plurality of sets of historical data. Each set of historical data comprises a plurality of session data units. Each session data unit representing a time-series of physiological measurements obtained during a different measurement session.