Abstract: An administered authentication system can authenticate an artificial reality device using an authorization record between a user account and an artificial reality device. In some implementations, the authorization record is created in response to activation of a user account-specific key sent to a user-supplied contact, where an artificial reality device identifier was provided with the user-supplied contact. In other implementations, the authorization record is created in response to activation of a user account-specific key provided to the artificial reality device as a code, where activation of the key includes adding an artificial reality device identifier to a key activation message. In yet other implementations, the authorization record is created in response to an application associated with a user account activating an artificial reality device-specific key, with an artificial reality device identifier, that is provided via the artificial reality device.

Abstract: The present disclosure describes methods of forming thermal barriers or breaks in tubular structures configured for inclusion in a variety of construction products and building features, such as doors and windows. Methods involve using one or more connector members to couple complementary extrusion profiles, which may comprise aluminum or other conductive materials. A low-conductivity material may then be deposited directly over the connector members coupling the extrusion profiles to form thermal barriers therebetween. At least a portion of the extrusion profiles may be knurled to improve the bond strength between the low-conductivity material, which may comprise polyurethane, and the extrusion profiles. Specialized components may be unnecessary to form the thermal barriers, such that the same connector members used to couple the extrusion profiles may be used to form the thermal barriers.

Abstract: The present disclosure provides methods, compositions, kits and systems for nucleic acid amplification. In some embodiments, nucleic acid amplification methods include subjecting the nucleic acid to be amplified to partially denaturing conditions. In some embodiments, nucleic acid amplification methods include amplifying without fully denaturing the nucleic acid that is amplified. In some embodiments, the nucleic acid amplification method employs an enzyme that catalyzes homologous recombination and a polymerase. In some embodiments, methods for nucleic acid amplification can be conducted in a single reaction vessel and/or in a single continuous liquid phase of a reaction mixture, without need for compartmentalization of the reaction mixture or immobilization of reaction components.

Abstract: A system can arrange a plurality of transport services in a geographic region by matching received transport requests from requesters with standard vehicles to facilitate transport of the requesters to destinations indicated in the transport requests. The transport requests can comprise both requests for standard vehicles and high-capacity vehicle (HCV) requests from HCV requesters. Based on a set of transport services for HCV requesters, from the plurality of transport services, the system can determine over a specified duration of time, a set of demand data for HCV transport services in the geographic region. The system can then execute a route design model using the set of demand data to generate an HCV route network for the geographic region.

Abstract: The present invention is a bicycle having a frame capable of flexing under downward force so that when downward force is applied a front spring assembly and a rear spring assembly are able to store and release the energy allowing the bike to jump in the air. The spring assemblies of the present invention use bow springs made from fiberglass/epoxy, graphite/epoxy, or fiberglass/nylon instead of traditional coil springs. The bow springs allow the spring assemblies to return a greater amount of energy than their coil spring counterparts while keeping overall weight of the spring assembly down.

Abstract: The invention provides a composition comprising enriched extracellular vesicles, wherein the extracellular vesicles express VSEL markers. The extracellular vesicles are used to treat or regenerate damages or injured tissue in a subject.

Abstract: The present invention is a bicycle having a frame capable of flexing under downward force so that when downward force is applied a front spring assembly and a rear spring assembly are able to store and release the energy allowing the bike to jump in the air. The spring assemblies of the present invention use bow springs made from fiberglass/epoxy, graphite/epoxy, or fiberglass/nylon instead of traditional coil springs. The bow springs allow the spring assemblies to return a greater amount of energy than their coil spring counterparts while keeping overall weight of the spring assembly down.

Abstract: A laden ship is transported across a shallow portion of a watercourse by a submergible floating vessel, while the ship is lifted upwardly within the water by means of a vessel platform placed under the hull. The vessel is preferably comprised of a multiplicity of rigid U-shape, separately floodable, buoyant sections, including end sections, which have self-propulsion. The several sections are pivotably interconnected, as by hinge assemblies, so the transporter platforms adjust to major up or down bends along the length of the hull, during lifting. The platforms are surfaced with a layer of resilient deformable material, or movable blocks, to accommodate local irregularities in the bottom of the ship.

Abstract: A laden ship is transported across a shallow portion of a watercourse by a submergible floating vessel, while the ship is lifted upwardly within the water by means of a vessel platform placed under the hull. The vessel is preferably comprised of a multiplicity of rigid U-shape, separately floodable, buoyant sections, including end sections, which have self-propulsion. The several sections are pivotably interconnected, as by hinge assemblies, so the transporter platforms adjust to major up or down bends along the length of the hull, during lifting. The platforms are surfaced with a layer of resilient deformable material, or movable blocks, to accommodate local irregularities in the bottom of the ship.

Abstract: A method of designing a cutting tool uses finite element numerical models to predict a response of the tool during a simulated cutting operation on a workpiece, and to simulate a chip-flow phenomenon occurring during the cutting operation. The chip-flow model incorporates representations of a fracture mechanism describing a chip separation phenomenon, a heat-generating mechanism describing a thermal coupling phenomenon, and a shear localization mechanism describing a shearing phenomenon wherein these phenomena occur during the cutting operation. The predicted tool response and the chip-flow simulation are evaluated by an artificial intelligence system to render rule-based judgments which are embodied in recommendations for continuously modifying the models and input design variables until the simulation and response converge to an optimal result.