Abstract: The present disclosure discloses a speaker box, including a housing with an accommodation space. The housing includes an upper case and a lower case. A speaker is received in the accommodation space. The speaker includes a diaphragm for producing sound. The speaker box further includes a passageway, a front sound cavity formed between the diaphragm and the upper case, a front cavity, a receiving slot formed in the upper case recessing from a side of the upper case adjacent to the diaphragm along a direction away from the diaphragm; and an air adsorbing layer received in the receiving slot, a steel piece engaging with the upper case and packaging the air adsorbing layer in the receiving slot, and a number of air adsorbing holes for communicating with the front sound cavity.

Abstract: The described positional awareness techniques employing visual-inertial sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy.

Abstract: The described positional awareness techniques employing sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy. The sensory data are gathered from an operational camera and one or more auxiliary sensors.

Abstract: The described positional awareness techniques employing visual-inertial sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy.

Abstract: According to one or more embodiments, an example system includes a motor, and a motor control system that includes a low side current measurement subsystem. The system further includes a processor that switches the motor control system to use feedforward current control in response to detecting a current measurement failure in the low side current measurement subsystem. The processor further identifies a first phase that has a failed current measurement. The processor also computes a current measurement for the first phase, which has the current measurement failure. The processor further uses the computed current measurement to compute a parameter estimate.

Abstract: Embodiments are directed to a system, computer program product, and method for identification of linguistically related elements, and more specifically to prediction of a linguistically related element. A linguistic algorithm forms a cluster representation of corpus entries. A linguistic term is identified and application to the cluster representation to identified proximally related linguistic terms. Associative relationships between the proximally related terms and category metadata are iteratively investigated. One or more linguistic terms related across the two more metadata categories is identified and designated at the linguistically related element.

Abstract: Technical solutions are described for inverter commutation techniques for five-phase synchronous motor drives. An example method for five-phase motor control of a five-phase motor in a steering system includes receiving, by a processing device, a commanded modulation index mi, a phase advance angle ?, and a measured position ?m. The method further includes generating, by the processing device, five duty cycles for each phase of the five-phase motor based at least in part on the commanded modulation index mi, the phase advance angle ?, and the measured position ?m. Each of the duty cycles includes a fundamental component and an injected harmonic component. The method further includes performing, by the processing device, a pulse width modulation technique on each of the five duty cycles to generate on-times for a plurality of switches in phase legs of an inverter.

Abstract: Provided are a device and method for fabricating an optical fiber Bragg grating, comprising a laser device, a laser shaping device, a laser interference device, a clamping movable device, and an organic-solution filling device; a liquid filling port of the clamping movable device is connected to the output port of the organic-solution filling device; the laser device emits laser light to the laser shaping device; the laser shaping device shapes the laser light, then transmits it to the laser interference device; the laser interference device splits the laser into two laser beams; the two laser beams interfere and periodically distributed laser interference fringes are obtained; the organic-solution filling device fills and attaches the organic solution to the surface of the inner wall of an hollow-core fiber; the clamping movable device moves the hollow-core fiber.

Abstract: The described positional awareness techniques employing sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to find new area to cover by a robot performing an area coverage task of an unexplored area. The sensory data are gathered from an operational camera and one or more auxiliary sensors.

Abstract: The described positional awareness techniques employing sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to find new area to cover by a robot encountering an unexpected obstacle traversing an area in which the robot is performing an area coverage task. The sensory data are gathered from an operational camera and one or more auxiliary sensors.

Abstract: Provided is a method for selectively displaying information regarding activity in a geographic area. The method may include receiving data regarding a plurality of card-present payment transactions that have been conducted in the geographic area during a time interval, determining a plurality of segments of the geographic area, assigning each of the transactions to the segment in which the transaction was conducted, determining aggregate transaction data for each of the segments based on data regarding the transactions that have been assigned to that segment; generating a transaction index for each segment based on a comparison of the aggregate transaction data of that segment with aggregate transaction data of at least one different segment and/or least one predetermined metric, and generating a visual representation comprising data regarding the transaction index of at least one of the segments. A system and computer program product are also provided.

Abstract: Methods and apparatus are disclosed for wirelessly transmitting power. In one aspect, an apparatus for wireless transmitting power is provided. The apparatus comprises a first coil loop defining a first area, the first coil loop conducting current at a first current value for generating a first magnetic field. The apparatus further comprises a second coil loop surrounding the first coil loop and defining a second area, the second coil loop conducting current at a second current value generating a second magnetic field, wherein a ratio of the first current value to the first area is substantially equal to a ratio of the second current value to the second area.

Abstract: The present disclosure discloses a speaker box, including a housing with an accommodation space. The housing includes an upper case and a lower case. A speaker is received in the accommodation space. The speaker includes a diaphragm for producing sound. The speaker box further includes a passageway, a front sound cavity formed between the diaphragm and the upper case, a front cavity, a receiving slot formed in the upper case recessing from a side of the upper case adjacent to the diaphragm along a direction away from the diaphragm; and an air adsorbing layer received in the receiving slot, a steel piece engaging with the upper case and packaging the air adsorbing layer in the receiving slot, and a number of air adsorbing holes for communicating with the front sound cavity.

Abstract: The described positional awareness techniques employing visual-inertial sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy.

Abstract: The described positional awareness techniques employing sensory data gathering and analysis hardware with reference to specific example implementations implement improvements in the use of sensors, techniques and hardware design that can enable specific embodiments to provide positional awareness to machines with improved speed and accuracy. The sensory data are gathered from multiple operational cameras and one or more auxiliary sensors.