Abstract: Systems and methods for semantic knowledge assessment, instruction, and acquisition are disclosed. In one embodiment a computer-implemented method for language instruction includes determining a lexical recognition ability level of a user within a lexicon of a particular language. This method further includes, based on item recognizability, creating a target list of unknown lexical items. The target list can be sorted by ranking the importance of the unknown lexical items within the particular lexicon. The method also includes generating a personal language learning sequence for the user based, at least in part, on the target list.

Abstract: Biometric-based systems and corresponding methods for identity verification are disclosed herein. A security system in accordance with one embodiment of the invention can include an audio input module configured to receive and digitize a spoken utterance from a person and a video input module configured to receive multiple digital images of at least a portion of the person at least approximately contemporaneously with receiving the spoken utterance from the person. The security system can also include a first data processing module configured to receive the digitized spoken utterance and digital images of the person and correlate them together to form a biometric template for the person. The security system further includes a memory storing prerecorded audio and video data as individual templates of individual people and a second data processing module configured to receive the biometric template and compare it for a match with one of the stored templates of audio and video data.

Abstract: A toaster is mountable on a heat reflective overhead support which is adapted to be secured to a supporting surface such as the underside of a cabinet. The support is recessed from the front of the toaster so as to accomodate the lip of the cabinet. The toaster is provided with a shelf or grill which is movable between a first, heating position and a second, delivery position below and forward of the heating position. The grill is lockable in the heating position by a locking mechanism which comprises a releasable latch bar. An infrared (IR) sensor senses IR radiation produced by a food article supported on the grill. The IR sensor is part of an electrical circuit which controls the heater elements as well as an electromechanical element which releases the latch bar. When the latch bar is released, a spring assisted parallelogram linkage transfers the grill by gravity from the heating position to the delivery position.