Abstract: A rehabilitation feedback system is used during rehabilitation of one or more body appendages of a user. The system includes four finger tracking elements and a thumb tracking element supported for movement relative to one another so as to allow a user to performs a gripping motion when the elements are coupled to the fingers and thumb of a user. A biasing member provides a resistance force acting to urge each tracking element towards a starting position thereof. A visual barrier is adapted to hide the hand of the user at a first side of the visual barrier from direct visual sight by the user at a second side of the visual barrier. A sensor at the first side of the visual barrier detects movements of the tracking elements and communicates with an indicator element detectable by the user from a second side of the visual barrier.

Abstract: Some embodiments include systems and methods for recall estimation. An exemplary method comprises determining reservoir sampling and size of labeling from each strata; determining recall and variance for each strata; determining sum of sample size for a time period; and determining reservoir sampling for each strata and label the sample items. Other embodiments are described.

Abstract: A therapeutic device for biasing a body portion of a patient into a predetermined position. The therapeutic device includes a rigid support that is substantially flat and contoured to brace the body portion into the predetermined position. A securing mechanism is provided to brace the rigid support against the body portion and a therapeutic stimulation mechanism is provided. The therapeutic stimulation mechanism can include an electrical stimulation mechanism or a heating mechanism to provide heating and electrical stimulation to the body portion.