Abstract: A negative electrode active material includes a carbon-silicon composite, which includes a carbon-based particle and a silicon nanoparticle. The carbon-based particle has a carbon skeleton. The silicon nanoparticle is attach to the carbon skeleton of carbon-based particle. In a peripheral area of the carbon-silicon composite, a mass percentage content A1 of carbon element and a mass percentage content B1 of silicon element satisfy 0.8?B1/A1?2.5.

Abstract: The devices and methods leverage harmonics to resolve, separate, and identify devices. The devices and methods use the harmonic patterns associated with a frequency modulating (FM) signal to discern and extract information from the FM signal using correlation learning in a crowded spectrum space where the nodes are transmitting simultaneously on multiple channels. The methods and devices leverage harmonics to resolve, separate, and/or identify wireless communication devices.

Abstract: The devices and methods leverage harmonics to resolve, separate, and identify devices. The devices and methods use the harmonic patterns associated with a frequency modulating (FM) signal to discern and extract information from the FM signal using correlation learning in a crowded spectrum space where the nodes are transmitting simultaneously on multiple channels. The methods and devices leverage harmonics to resolve, separate, and/or identify wireless communication devices.

Abstract: A method, system, and computer program product is provided for tracking the shape of a surface. The method includes generating a first plurality of surface models based on the surface, each surface model associated with surface parameter values and representing a different shape, determining an estimated position of the plurality of RF transponders on each surface model of the first plurality of surface models, communicating at least one activation signal to the plurality of RF transponders arranged on the surface, the surface comprising an unknown shape, receiving a plurality of response signals from at least a subset of the plurality of RF transponders, determining radio environment parameters for each surface model of the first plurality of surface models, and determining at least one selected surface model of the first plurality of surface models.

Abstract: The devices and methods leverage harmonics to resolve, separate, and identify devices. The devices and methods use the harmonic patterns associated with a frequency modulating (FM) signal to discern and extract information from the FM signal using correlation learning in a crowded spectrum space where the nodes are transmitting simultaneously on multiple channels. The methods and devices leverage harmonics to resolve, separate, and/or identify wireless communication devices.

Abstract: Provided is a system and method for heating an item in a microwave oven. The method includes capturing, with at least one electromagnetic field sensor, at least one electromagnetic field measurement of a microwave chamber, each electromagnetic field measurement of the at least one electromagnetic field measurement corresponding to a region in the microwave chamber, generating an electromagnetic field map of the microwave chamber based on the at least one electromagnetic field measurement, capturing, with at least one sensor, a plurality of thermal measurements of the item being heated in the microwave chamber, each thermal measurement of the plurality of thermal measurements corresponding to a region on the item, and controlling at least one of a position of the item and the electromagnetic field while the item is being heated in the microwave chamber based on the electromagnetic field map and the plurality of thermal measurements.

Abstract: A system that exploits collaboration between a plurality of spatially distributed RFID readers to enhance the range of commercial passive RFID tags, without alteration to the tags. The system uses distributed MIMO to coherently combine signals across geographically separated RFID readers. It is capable of inferring the optimal beamforming parameters to beam energy to a tag without any initial knowledge of the location or orientation of the tags.

Abstract: A light emitting module includes a circuit board, and light emitting diode chips arranged in a plurality of regions on the circuit board. The light emitting diode chips are divided into a plurality of light emitting diode groups connected in series. The plurality of light emitting diode groups is connected in parallel to one another, and at least one of the light emitting diode chips in at least one of the plurality of light emitting diode groups is disposed in a region different from that of at least one other light emitting diode chip.

Abstract: A method, system, and computer program product is provided for tracking the shape of a surface. The method includes generating a first plurality of surface models based on the surface, each surface model associated with surface parameter values and representing a different shape, determining an estimated position of the plurality of RF transponders on each surface model of the first plurality of surface models, communicating at least one activation signal to the plurality of RF transponders arranged on the surface, the surface comprising an unknown shape, receiving a plurality of response signals from at least a subset of the plurality of RF transponders, determining radio environment parameters for each surface model of the first plurality of surface models, and determining at least one selected surface model of the first plurality of surface models.

Abstract: A system that exploits collaboration between a plurality of spatially distributed RFID readers to enhance the range of commercial passive RFID tags, without alteration to the tags. The system uses distributed MIMO to coherently combine signals across geographically separated RFID readers. It is capable of inferring the optimal beamforming parameters to beam energy to a tag without any initial knowledge of the location or orientation of the tags.