Abstract: Systems and techniques for increasing wireless network performance using contextual fingerprinting are described herein. Performance metrics may be obtained for a client device-access radio pair that includes a wireless network interface of a client device and an access radio of a wireless network associated with the client device. A fingerprint may be generated for the client device-access radio pair. The fingerprint may be stored in a fingerprint store for the wireless network.

Abstract: A three-dimensional (3D) printing system is provided. The printing system includes a resin tank assembly with a sliding scraper, an automatic resin dispensing system, sensors configured to measure various aspects of the system, e.g., the volume of resin within the resin tank and/or within the resin dispensing system, a rigid releasable interface between the lift arm and the build platform, a resin heating system, a magnetic interface between the resin tank and the base assembly, a resin tank locking system, and other novel aspects.

Abstract: Footwear having interchangeable heels, includes: (a) a top component having a back section, a middle, a front and an upper section for encompassing a foot, the top component having an underside shape and contour, and having at least two separate connect mechanisms for connection to a bottom component; (b) a bottom component having a having back, a middle, and a front section, the bottom component having a topside shape and contour sufficiently coinciding with the top component underside shape and contour so as to nest with one another, and having at least two separate connect mechanisms corresponding to the at least two separate mechanisms of the top component for connection to it; and (c) at least one locking mechanism.

Abstract: Footwear having interchangeable heels, includes: (a) a top component having a back section, a middle, a front and an upper section for encompassing a foot, the top component having an underside shape and contour, and having at least two separate connect mechanisms for connection to a bottom component; (b) a bottom component having a having back, a middle, and a front section, the bottom component having a topside shape and contour sufficiently coinciding with the top component underside shape and contour so as to nest with one another, and having at least two separate connect mechanisms corresponding to the at least two separate mechanisms of the top component for connection to it; and (c) at least one locking mechanism.