Aside from their value in the indirect determination of the blood pressure the sounds at the brachial artery provide other valuable clinical information. Their value in blood pressure determination in auricular fibrillation generally has been found to be limited. By using a simple technic involving the counting of the brachial-artery-sound deficit, a satisfactory, repeatable method of blood pre...

This paper develops an exhaust manifold pressure estimation method for a Diesel engine equipped with a variable geometry turbine (VGT) turbocharger. Extrapolated VGT data-maps are used directly for the estimation of the exhaust pressure using a noniterative Newton-Raphson based method suitable for real-time applications. This approach can give more accurate estimations than traditional methods ...

In this work, the Parameters Estimation in petroleum wells is presented; it is based on Intelligent Systems (neural networks and fuzzy logic). For validating the results, the estimation is applied in wells that need artificial lift using well heading data (gas and production pressure). Key-Words: neo-fuzzy models, oil system production, artificial gas lift wells, parameters estimation.

We describe an algorithm to estimate and track slow changes in power spectral density (PSD) of nonstationary pressure signals. The algorithm is based on a Kalman filter that adaptively generates an estimate of the autoregressive model parameters at each time instant. The algorithm exhibits superior PSD tracking performance in nonstationary pressure signals than classical nonparametric methodolo...