Abstract Adaptive wavelet filtering is a very important fault feature extraction method in the domain of condition monitoring; however, owing to time-consuming computation and difficulty choosing criteria used represent incipient faults, engineering applications are limited some extent. To detect gear faults at fast speed, new criterion proposed optimize parameters modified impulsive for constr...

The present invention generally relates to a computer-implemented system for processing data for the purpose of blind extraction of more pure components than mixtures recorded in the fields of 1Dor 2D-NMR spectroscopy and mass spectrometry. Specifically, the invention is related to the application of the method of sparse component analysis in combination of detection of single component points ...

We consider the Robin Hood model of dry friction to study entropy transfer during sliding. For the polished surface (steady state) we study the probability distribution of slips and find an exponential behavior for all the physically relevant asperity interaction-distance thresholds. In addition, we characterize the time evolution of the sample by its spatial fractal dimension and by its entrop...

Chirality is considered by many scientists to be mainly a geometric concept. There exists also a physical aspect of chirality which is largely being overlooked at. Two examples of mechanical devices are introduced here that represent " Physical Chirality ". These are a rotating water sprinkler and a variant of Crookes' radiometer. When interacting with appropriate media, they both choose only o...

The universal principle that an open system can be driven to a state far from equilibrium, or organized, by strong negative entropy flow from its surroundings has been validated in numerous fields from physics and chemistry to the life science. In this paper, entropy flows for a severe storm are calculated via the entropy flow formula using the National Centers for Environmental Prediction/Nati...