We propose an algorithm for use with multisensor systems that is capable of the following: a) identify an analyte independently of its concentration; b) estimate the concentration of the analyte, even if the system was not previously exposed to this concentration; c) tell when an analyte is of a chemical type not previously presented to the system. The algorithm, based upon recent work of Hopfi...

Two new methods of electroanalysis are described. These methods are based on membranes containing monodisperse Au nanotubules with inside diameters approaching molecular dimensions. In one method, the analyte species is detected by measuring the change in trans-membrane current when the analyte is added to the nanotubule-based cell. The second method entails the use of a concentration cell base...

The technique of surrogate data has been used as a method to test for membership of particular classes of linear systems. We suggest an obvious extension of this to classes of nonlinear parametric models and demonstrate our methods with respiratory data from sleeping human infants. Although our data are clearly distinct from the different classes of linear systems we are unable to distinguish b...