Abstract: A method for touchless gesture recognition is provided. The method includes transmitting ultrasonic signals via a speaker. The method includes generating ultrasonic signals. The method includes receiving the reflected ultrasonic signals from an object via two or more microphones. The method includes computing a frequency shift according to the reflected ultrasonic signals. The method includes identifying a gesture that corresponds to a movement of the object according to the frequency shift. The method includes performing a function that corresponds to the gesture.

Abstract: Provided herein are compounds of formula (I) having activity on a receptor protein tyrosine kinase, wherein R1, R2, R3, A, Q, Z, X and W are set forth in the description, as well as solvates, hydrates, tautomers or pharmaceutically acceptable salts thereof.

Abstract: Provided herein are compounds of formula (I) having activity on a receptor protein tyrosine kinase, wherein R1, R2, R3, A, Q, Z, X and W are set forth in the description, as well as solvates, hydrates, tautomers or pharmaceutically acceptable salts thereof.

Abstract: The present application provides a compound in formula III, and further provides a use of the compound in the synthesis of a Brivaracetam intermediate and a crude drug, and a synthesis method. A raw material involved in the method of the present application is low in costs and easily available; (R)-4-propyl-dihydrofuran-2-ketone having high optical purity can be prepared; complicated separation and purification steps are avoided; costs are reduced, and the method is more applicable to industrial production.

Abstract: The present application provides a compound in formula III, and further provides a use of the compound in the synthesis of a Brivaracetam intermediate and a crude drug, and a synthesis method. A raw material involved in the method of the present application is low in costs and easily available; (R)-4-propyl-dihydrofuran-2-ketone having high optical purity can be prepared; complicated separation and purification steps are avoided; costs are reduced, and the method is more applicable to industrial production.

Abstract: A process for generating an entangled state of a plurality of particles includes: providing the plurality of particles, the plurality of particles interacting via long range interactions; producing a first entangled state in a first particle; entangling the first particle with a second particle to form a second entangled state, wherein particles that are not in the second entangled state are remaining particles; and proceeding, starting with the second entangled state, to propagate entanglement in a logarithmic progression through the remaining particles in a recursive manner, to produce an intermediate entangled state, such that the intermediate entangled state acts as an initial entangled state for a next iteration, until a final entangled state is formed to generate the entangled state of the particles.

Abstract: A process for generating an entangled state of a plurality of particles includes: providing the plurality of particles, the plurality of particles interacting via long range interactions; producing a first entangled state in a first particle; entangling the first particle with a second particle to form a second entangled state, wherein particles that are not in the second entangled state are remaining particles; and proceeding, starting with the second entangled state, to propagate entanglement in a logarithmic progression through the remaining particles in a recursive manner, to produce an intermediate entangled state, such that the intermediate entangled state acts as an initial entangled state for a next iteration, until a final entangled state is formed to generate the entangled state of the particles.

Abstract: A macromolecule-based conductive composite material and a PTC element. The macromolecule-based conductive composite material comprises: a macromolecule base material, having a volume fraction of the macromolecule base material of 20%-75%; a conductive filler with a core-shell granule structure and dispersed in the macromolecule base material, having a volume fraction of 25%-80%; and a coupling agent, being a titanate coupling agent and accounting for 0%-5% of the volume of the conductive filler. The PTC element prepared by using the macromolecule-based conductive composite material comprises at least two metal electrode plates (12, 12?), a macromolecule-based conductive composite material (11) being closely combined with the metal electrode plates (12, 12?). The PTC element prepared from the macromolecule-based conductive composite material has the advantages of low room-temperature resistivity, outstanding weather durability, good voltage resistance and good resistor repeatability.

Abstract: A macromolecule-based conductive composite material and a PTC element. The macromolecule-based conductive composite material comprises: a macromolecule base material, having a volume fraction of the macromolecule base material of 20%-75%; a conductive filler with a core-shell granule structure and dispersed in the macromolecule base material, having a volume fraction of 25%-80%; and a coupling agent, being a titanate coupling agent and accounting for 0%-5% of the volume of the conductive filler. The PTC element prepared by using the macromolecule-based conductive composite material comprises at least two metal electrode plates (12, 12?), a macromolecule-based conductive composite material (11) being closely combined with the metal electrode plates (12, 12?). The PTC element prepared from the macromolecule-based conductive composite material has the advantages of low room-temperature resistivity, outstanding weather durability, good voltage resistance and good resistor repeatability.