Abstract: A time synchronization method, apparatus, domain controller, and storage medium are disclosed. The domain controller is mounted in a vehicle and includes a number of SoCs and micro control units. The SoCs and micro control units are respectively, communicatively connected through the controller area network bus and respectively connected to the switch via Ethernet. The switch has external Ethernet interfaces. A main SoC in the number of SoCs has external UART/PPS interfaces and the micro control units have external FlexRay interfaces. The time synchronization method of the domain controller includes any one of the steps of receiving a time service from an external device through the UART/PPS interfaces, receiving a time service from the external device through the switch over the Ethernet interface, or receiving a time service from the external device through the FlexRay interface under a normal operation phase of the vehicle.

Abstract: Provided is a traffic sign recognition method based on a lightweight neural network, which including: a lightweight neural network model is constructed for training and pruning to obtain a lightweight neural network model; the lightweight neural network model comprises a convolution feature extraction part and a classifier part; the convolution feature extraction part includes one layer of conventional 3×3 convolution and 16 layers of separable asymmetric convolution. The classifier part includes three layers of separable full connection modules.

Abstract: The present disclosure relates to a powered screwdriver. The powered screwdriver includes a housing, a motor housed in the housing and a tool holder driven by the motor. The tool holder selectively holds both a screwdriver bit and a hex key. The hex key includes a bend such that legs of the hex key are transverse to one another.

Abstract: Disclosed are a defense method and a model of deep learning model aiming at adversarial attacks in the technical field of image recognition, which makes full use of the internal relationship between the adversarial samples and the initial samples, and transforms the adversarial samples into common samples by constructing a filter layer in front of the input layer of the deep learning model; the parameters of the filter layer are trained by using the adversarial attack samples, so as to improve the ability of the model to resist adversarial attack; then the trained filter layer is combined with the learning model after the adversarial training, and a deep learning model with strong robustness and high classification accuracy is obtained, which ensures that the recognition ability of the initial sample is not reduced while resisting the adversarial attacks.

Abstract: The present disclosure discloses a method for on-line measurement of the polymer melt temperature, comprising: on-line measurement of ultrasonic sound velocity c of melt in an injection molding process, on-line measurement of melt pressure P in the injection molding process, and obtaining melt temperature T in the injection molding process by formula (1). The present disclosure also discloses an apparatus for on-line measurement of the polymer melt temperature. The method and the apparatus provided in the present disclosure may enable on-line and in-situ characterization of the melt density and further enable on-line quantitative measurement of the melt quality. Compared with infrared measurement methods, the method provided herein is significantly reduced in cost, which is of great significance to theoretical researches of crystallization process and shear heating.

Abstract: Disclosed are a point cloud polar coordinate coding method and a device, including dividing a circular scanning area scanned by a lidar at an equal angle with an angle ?? to obtain a plurality of identical polar coordinate areas; dividing each of the polar coordinate areas with equal length along a radial direction with a length ?r to obtain a plurality of polar coordinate grids and generating a plurality of polar coordinate cylinders corresponding to each of the polar coordinate grids in a three-dimensional space; generating polar coordinate cylinder voxels; extracting structural features from the all point cloud data in each of the polar coordinate cylinder voxels; obtaining a two-dimensional point cloud pseudo-image; boundary supplementing to the two-dimensional point cloud pseudo-image; and performing feature extraction on the two-dimensional point cloud pseudo-image by using convolutional neural networks, and outputting a final feature map.

Abstract: In some embodiments, a system for dispensing liquid from a container holding a liquid comprises a reservoir mountable to the container so as to be in fluidic communication with the container. The reservoir may comprise an inlet and an outlet. When mounted to the container, the reservoir may be configured to measure a predetermined quantity of liquid while in first orientation and to simultaneously dispense the predetermined quantity of liquid from the outlet and receive a refilling quantity of liquid through the inlet while in a second orientation that is angled relative to the first orientation above a threshold angle.

Abstract: Immunogenic compositions comprising a recombinant adenoviral vector that expresses a nucleic acid molecule encoding multimers of a Gonadotrophic Releasing Hormone (GnRH), an antigenic carrier and multiple immune enhancing epitopes are described herein. The use of the immunogenic compositions on mammals resulting in an antibody response to GnRH can inhibit the physiological activity of GnRH and thus induce infertility and modify breeding behavior of immunized animals.

Abstract: A tubular coupling comprising a first connector comprising a body defining a first passageway portion and a valve area, the valve area comprising a first volume adjacent to an end of the first passageway portion; and a second volume in fluid communication with the first volume; and a first valve disposed in the first volume of the valve area; and a second connector adapted to receive at least a portion of the first connector, the second connector comprising: a body defining a second passageway portion and a valve area, the valve area comprising: a first volume adjacent to an end of the second passageway portion; and a second volume in fluid communication with the first volume; and a second valve disposed in the first volume of the valve area.

Abstract: The present disclosure relates to a powered screwdriver. The powered screwdriver includes a housing, a motor housed in the housing and a tool holder driven by the motor. The tool holder selectively holds both a screwdriver bit and a hex key. The hex key includes a bend such that legs of the hex key are transverse to one another.

Abstract: The present invention discloses a ultrasonic method for indirectly measuring a pressure of a cavity of an injection molding machine, comprising: emitting ultrasonic wave to each pull rod along an axial direction of the pull rod respectively at the same time, detecting an ultrasonic wave echo time difference of each pull rod, and obtaining an average pressure inside a cavity of the injection molding machine. By the detection method and detection device of the present invention, the pressure inside the cavity may be detected in a certain state, the pressure inside the cavity in the injection molding process may be detected in real time, and the detection process is simple and the accuracy is high.

Abstract: A method, device, computer equipment and storage medium for GNSS time synchronization are disclosed. The method includes: receiving data packet of NMEA protocol, reading a valid UTC time from data packet of NMEA protocol, and storing the read valid UTC time in a time synchronization controller; receiving PPS signal, capturing a local time output by local clock when PPS signal is generated, and storing the local time in the time synchronization controller; reading a last local time stored before the current local time and reading the stored latest UTC time as a UTC time corresponding to the last local time when the time synchronization controller receives the current local time; and determining, by the time synchronization controller, a local time correction amount according to the last local time and the UTC time corresponding to the last local time, and correcting the local clock according to the local time correction amount.

Abstract: The present disclosure relates to a powered screwdriver. The powered screwdriver includes a housing, a motor housed in the housing and a tool holder driven by the motor. The tool holder selectively holds both a screwdriver bit and a hex key. The hex key includes a bend such that legs of the hex key are transverse to one another.

Abstract: A method for controlling carbide network in a bearing steel wire rod by controlling cooling and rolling, comprises the following steps: rapidly rolling a bar to a wire rod and spinning it into a loose coil, controlling the rolling temperature at 780° C.-880° C.; and the spinning temperature at 750° C.-850° C.; carrying out on-line controlling cooling of continuous loose coils using EDC water bath austempering cooling process, controlling the cooling rate at 2.0° C./s-10° C./s, and controlling the final cooling temperature within 620-630° C.; after EDC water bath austempering cooling, using slow cooling under a cover, and the temperature is controlled to be 400° C.-500° C. when being removed out of the cover; after slow cooling, collecting coils, and cooling in air to the room temperature.

Abstract: The present disclosure relates generally to photocurable compositions and methods for continuously forming a three-dimensional body from these compositions. More particularly, the present disclosure relates to photocurable compositions comprising a mixture of polysiloxanes capable of being dually cured, i.e., first by UV radiation followed by thermal treatment, or being cured by UV radiation. In one aspect, the disclosure provides a photocurable composition, including: a first polysiloxane comprising at least two acrylate or methacrylate groups per molecule; a second polysiloxane containing at least one (e.g., at least two) Si—H group per molecule; a third polysiloxane containing at least one (e.g., at least two) reactive aliphatic ethylene group per molecule; a free radical photoinitiator in an amount of about 0.01 to about 10 weight % based on the total weight of (meth)acrylate-containing polysiloxane in the composition; and a hydrosilylation catalyst in an amount of about 0.

Abstract: A time synchronization method, apparatus, domain controller, and storage medium are disclosed. The domain controller is mounted in a vehicle and includes a number of SoCs and micro control units. The SoCs and micro control units are respectively, communicatively connected through the controller area network bus and respectively connected to the switch via Ethernet. The switch has external Ethernet interfaces. A main SoC in the number of SoCs has external UART/PPS interfaces and the micro control units have external FlexRay interfaces. The time synchronization method of the domain controller includes any one of the steps of receiving a time service from an external device through the UART/PPS interfaces, receiving a time service from the external device through the switch over the Ethernet interface, or receiving a time service from the external device through the FlexRay interface under a normal operation phase of the vehicle.

Abstract: A resource allocation system for a production facility stores: a production schedule assigning production tasks to machines of the production facility, each production task comprising a production time window during which a machine is occupied with the production task; a maintenance schedule assigning maintenance tasks to service resources, each maintenance task comprising a maintenance time window during which a machine is occupied with the maintenance task; and a maintenance plan comprising maintenance rules for generating maintenance tasks, the maintenance rules at least comprising a scheduling rule from which a time after which a machine has to be maintained is derivable.

Abstract: In some embodiments, a system for dispensing liquid from a container holding a liquid comprises a reservoir mountable to the container so as to be in fluidic communication with the container. The reservoir may comprise an inlet and an outlet. When mounted to the container, the reservoir may be configured to measure a predetermined quantity of liquid while in first orientation and to simultaneously dispense the predetermined quantity of liquid from the outlet and receive a refilling quantity of liquid through the inlet while in a second orientation that is angled relative to the first orientation above a threshold angle.

Abstract: The present disclosure provides a method and a device for imaging diffracted waves based on azimuth-dip angle gathers and a storage medium, which relates to the technical field of seismic exploration, comprising firstly acquiring seismic data and generating target azimuth-dip angle gathers based on the seismic data, wherein the target azimuth-dip angle gathers are a set of all azimuth-dip angle gathers in which the Fresnel zones have been muted, and each of the azimuth-dip angle gathers represents a dip-angle gather corresponding to each azimuth angle; then detecting diffracted waves based on the target azimuth-dip angle gathers, and determining the type of the diffracted waves; and finally, imaging the diffracted waves based on the type of the diffracted waves to obtain a diffracted wave imaging result.

Abstract: A irradiation welding apparatus including an irradiation welding generator having at least one irradiation welding head configured to apply an irradiation treatment to end contact surfaces of a first profile and a second profile to join the first profile and the second profile, where the at least one irradiation welding head forms a planar cross-sectional shape in an x-y directional plane relative to the irradiation welding generator.