Abstract: An inerter-based metamaterial for low-frequency vibration attenuation includes a structural matrix material and an inerter array. The inerter array can be embedded within the structural matrix material. The inerter array can include a first inerter cell oriented along a first attenuation axis and a second inerter cell oriented along a second attenuation axis different from the first attenuation axis. The first inerter cell can include a first inerter. The second inerter cell can include a second inerter. The first inerter and the second inerter can be microinerters. The first inerter cell and the second inerter cell can be separated from each other by at least a portion of the matrix material. The first inerter cell and the second inerter cell can each include a first end and a second end and can each be connected to the matrix material at both the first end and the second end.

Abstract: In an example, an electronic device may include a network interface device having a first transceiver to communicate via a short-range wireless communication protocol and a second transceiver to communicate via the short-range wireless communication protocol. Further, the electronic device may include a processor connected to the network interface device. During operation, the processor may receive a request to search a first device in accordance with the short-range wireless communication protocol. Further, the processor may search a first radio frequency channel via the first transceiver to detect the first device. Furthermore, the processor may search a second radio frequency channel via the second transceiver to detect the first device. The first radio frequency channel and the second radio frequency channel may be searched in parallel.

Abstract: A friction stir welding tool holder is provided and includes: a tool holder cone, an end thereof is connected to the rotating spindle, a cone flow channel is formed therein, the cone flow channel has a valve, and the tool holder cone further has a tool locking ring, and the tool locking further has a tool accommodation groove axially arranged and a thermal sensing slot laterally arranged; a cutting tool, axially movable relative to the tool holder cone, where the cutting tool is arranged in the tool accommodation groove and has a machining end protruding from the tool accommodation groove; a torque transmission system, arranged between the tool holder cone and the cutting tool to transmit torque from the tool holder cone to the cutting tool; and a thermal sensor, inserted in the thermal sensing slot to sense a temperature of the cutting tool at any time.

Abstract: An electronic device is provided. The electronic device includes a carrier, a first electronic component, a second electronic component, and an encapsulant. The first electronic component is disposed at a first side of the carrier. The second electronic component is disposed at a second side of the carrier opposite to the first side. The encapsulant encapsulates the first electronic component and has an uneven thickness. The encapsulant is configured to reduce a warpage of the carrier.

Abstract: An adaptive tool holder for friction stir welding of a robotic arm includes: a knife bar; a hollow barrel seat, connected below the knife bar; a ball spline with an upper section, an outer convex ring and a lower section; a spring seat, disposed within the barrel seat and located on the upper section of the ball spline; an elastic element, disposed within the barrel seat, where both ends of the elastic element abut against a bottom of the knife bar and the spring seat respectively; a spring guide pin, disposed through the spring seat; a connecting post, disposed within the lower section of the ball spline, where a top of the connecting post is connected and fixed to the spring guide pin; and a knife inserted and fixed detachably at a bottom end of the connecting post.

Abstract: A friction stir welding tool holder is provided and includes: a tool holder cone, an end thereof is connected to the rotating spindle, a cone flow channel is formed therein, the cone flow channel has a valve, and the tool holder cone further has a tool locking ring, and the tool locking further has a tool accommodation groove axially arranged and a thermal sensing slot laterally arranged; a cutting tool, axially movable relative to the tool holder cone, where the cutting tool is arranged in the tool accommodation groove and has a machining end protruding from the tool accommodation groove; a torque transmission system, arranged between the tool holder cone and the cutting tool to transmit torque from the tool holder cone to the cutting tool; and a thermal sensor, inserted in the thermal sensing slot to sense a temperature of the cutting tool at any time.

Abstract: A system and method for deploying software packages for end devices that communicate through a mobile network is disclosed. A deployment orchestrator is coupled to the mobile network. End devices communicate with each other through the mobile network. At least one of end devices includes a support package repository storing software packages. When a new end device requires software package deployment, the deployment orchestrator locates at least one of the end devices with the support package repository. The new end device receives software packages from the end device including the support package repository through the mobile network.

Abstract: Circuits and methods for preventing glitch in a circuit are disclosed. In one example, a circuit coupled to an input/output pad is disclosed. The circuit includes: a first level shifter, a second level shifter, and a control logic circuit. The first level shifter is configured for generating a data signal. The second level shifter is configured for generating an output enable signal. The first and second level shifters are controlled by first and second power-on-control signals, respectively. The control logic circuit is coupled to the first level shifter and the second level shifter.

Abstract: The present application discloses a manufacturing method of an optical film and the optical film. The manufacturing method includes: step S10, mixing titanium source precursors and a barium source and adding an alkaline agent for a reaction to obtain nanoparticles; and step S20, mixing quantum dots, an organic adhesive, and the nanoparticles followed by coating to obtain the optical film.

Abstract: A system and method for providing operating system (OS) installation images in a computer system including a deployment server and a target computer device such as a target server. The deployment server executes a bundle builder that receives a configuration file for a system layer, a kernel layer, and an application layer. Files are collected according to the configuration file. Packages for a system layer, a kernel layer, and an application layer are assembled in a combined OS installation image. The combined OS installation image is sent to the target server.

Abstract: Example camera and hub arrangements are presented herein. An example device includes an Ethernet connector configured to provide power and data, a camera port configured to provide power and data to a camera module, and an audio port configured to provide power and data to at least one audio input/output module. The device also includes a processor configured to determine one or more camera parameters for the camera module attached to the camera port, such as a type of a camera module attached to the camera port. The device can change operation mode based on camera parameters and audio parameters associated with connected camera modules and audio modules. Different modules can be connected to the device and located remotely from the device.

Abstract: The present invention relates to a hinge system of an electric door comprising a control module, an intelligent automatic recognition system for installing in a door or a door frame and including a recognition device and a sensing module, and a hinge assembly. The hinge assembly comprises a pivot housing, a power unit disposed in the pivot housing and electrically connected to the control module, a first hinge member having a first knuckle for sleeving on the pivot housing and a second hinge member connected to two ends of the pivot housing. The power unit comprises a motor assembly having a motor axis, a reduction gearbox having one end connected to the motor axis, a gear shaft and plural planetary gears, and a gear connected to the gear shaft of the reduction gearbox.

Abstract: A lens adjustment device includes a base assembly, a lens assembly, a light blocking member and an elastic member. The lens assembly is disposed on the base assembly and is rotatable relative to the base assembly along an axis. The light blocking member is disposed between the base assembly and the lens assembly. The light blocking member is rotatable relative to the lens assembly and the base assembly. The light blocking member is movable along the axis between a first predetermined position and a second predetermined position. The elastic member abuts against the light blocking member to provide an elastic force for moving the light blocking member from the second predetermined position toward the first predetermined position such that the light blocking member abuts against the base assembly.

Abstract: An additive manufacturing method includes: providing a metal substrate; pressing a plurality of first metal parts to weld the same on the metal substrate one by one using a welding unit through friction welding so as to form a first stacked layer laminated on the metal substrate; pressing a plurality of second metal parts to weld the same on the first stacked layer one by one using the welding unit through friction welding so as to form a second stacked layer laminated on the first stacked layer; and repeating formation of the second stacked layer until a required amount of the second stacked layers are additively laminated on the first stacked layer to obtain a final three-dimensional (3D) article.

Abstract: A lens adjustment device includes a base assembly, a lens assembly, a light blocking member and an elastic member. The lens assembly is disposed on the base assembly and is rotatable relative to the base assembly along an axis. The light blocking member is disposed between the base assembly and the lens assembly. The light blocking member is rotatable relative to the lens assembly and the base assembly. The light blocking member is movable along the axis between a first predetermined position and a second predetermined position. The elastic member abuts against the light blocking member to provide an elastic force for moving the light blocking member from the second predetermined position toward the first predetermined position such that the light blocking member abuts against the base assembly.

Abstract: An additive manufacturing method includes: providing a metal substrate; pressing a plurality of first metal parts to weld the same on the metal substrate one by one using a welding unit through friction welding so as to form a first stacked layer laminated on the metal substrate; pressing a plurality of second metal parts to weld the same on the first stacked layer one by one using the welding unit through friction welding so as to form a second stacked layer laminated on the first stacked layer; and repeating formation of the second stacked layer until a required amount of the second stacked layers are additively laminated on the first stacked layer to obtain a final three-dimensional (3D) article.

Abstract: The present invention relates to a hinge system of an electric door comprising a control module, an intelligent automatic recognition system for installing in a door or a door frame and including a recognition device and a sensing module, and a hinge assembly. The hinge assembly comprises a pivot housing, a power unit disposed in the pivot housing and electrically connected to the control module, a first hinge member having a first knuckle for sleeving on the pivot housing and a second hinge member connected to two ends of the pivot housing. The power unit comprises a motor assembly having a motor axis, a reduction gearbox having one end connected to the motor axis, a gear shaft and plural planetary gears, and a gear connected to the gear shaft of the reduction gearbox.

Abstract: An automatic door system having intelligent automatic identification is disclosed herein. It comprises a door panel having a lock member actively disposed on a second side thereof for locking a door frame; a central control unit disposed in the door panel and electrically connected to the lock member for controlling extension and contraction of the lock member; a motor power assembly having a motor disposed in the door panel, a gear disposed on a first side of the door panel and driven to rotate by the motor, and a track for assembling to the door frame and correspondingly engaging with the gear; and an intelligent identification system disposed on a first surface of the door panel and electrically connected to the central control unit for identification.

Abstract: A mobile robot having an automatic charging module is disclosed. It comprises a robot main body having a mobile module, a charging module and a processing system electrically connected to the mobile module and the charging module; a laser system having a rotation module disposed on a top side of the robot main body and a plurality of laser modules electrically connected to the processing system; and a charging base having a positive electrode output end and a negative electrode output end respectively disposed on two seats thereof.