56 results about "Statistical difference" patented technology

A curriculum progression pathway analysis assesses an educational program having multiple activities defining multiple learner tracks by organizing the learners into groups based on the learner tracks and, for each learner group, calculating a baseline average score, a post-activity average score, and statistical differences between the baseline average score and the post-activity average scores. Any significant statistical differences are identified, and a report may be generated describing statistical conclusions and inferences. The invention can further provide a domain-based learner analysis for curriculum, a domain-based learner analysis for activities, and a learner retention analysis. In an application for continuing medical education the performance index test includes a clinical vignette, a set of statements which are moved to either a best practices column or a not best practices column, and an indicator for an allowable number of moves to achieve a perfect score.

The invention discloses a method and a device for separating and diagnosing components of a composite fault of a gearbox. Starting from the typical failure modes of the main components of the gearbox and gears, combined with the convolution sparse theory, a multi-scale composite regularization convolution sparse separation diagnosis algorithm is proposed. Separation of linear aliasing and coupled composite faults. According to the fault dynamics difference between bearings and gears, the idea of ​​multi-scale convolution kernel is proposed to better match the fault components. A composite regularization sparse model is proposed for the statistical differences of each component in the composite fault signal. The optimization problem of the model is transformed into the frequency domain to realize the fusion solution of multi-scale convolution kernels, and the frequency domain optimization problem is decomposed into sub-problems alternately iteratively solved by using the alternate iterative solution framework in the alternating direction multiplier method. The experiment verifies the effectiveness of the method. Feasibility and effectiveness. Effective separation and diagnosis of compound faults are realized, and Gaussian noise and slowly varying harmonic interference are avoided.