Abstract: Provided are a display substrate, a preparation method thereof and a display apparatus. The display substrate includes a first semi-conductive layer, a first conductive layer, a second conductive layer, a second semi-conductive layer, a third conductive layer, an interlayer insulating layer and an organic layer stacked on a substrate. The first semi-conductive layer includes an active layer of a polysilicon transistor, the first conductive layer includes a gate electrode of a polysilicon transistor and a first electrode plate of a storage capacitor, the second conductive layer includes a second electrode plate of a storage capacitor, the second semi-conductive layer includes an active layer of an oxide transistor, and the third conductive layer includes a gate electrode of an oxide transistor.

Abstract: The embodiments of the present disclosure disclose a low-frequency vibrator unit, an antenna component, and a base station. A vibrator arm is provided to bend towards the bottom, and a director is provided with a window corresponding to an extension branch. Therefore, in an aspect, the vibrator arm occupies less space, such that more low-frequency vibrator units may be arranged in the same space. In another aspect, the window provided in the director reduces influences thereof on a high-frequency vibrator unit below and improves a cross-polarization ratio of the antenna component, such that signal space directivity of the antenna component is stronger. In yet another aspect, the antenna component occupies less space in the base station.

Abstract: The embodiments of the present disclosure disclose a vibrator arm and a vibrator structure. The vibrator arm comprises an extension branch and a bending branch, and the bending branch bends to one side of the extension direction of the extension branch. Thus, the space occupation of the vibrator arm is reduced, especially when the number of the vibrator arm is large, the antenna formed through the vibrator arm is smaller and the structure is more compact.

Abstract: A power source module for powering a motherboard comprises a rectifier circuit, a controlling unit, and a leakage protection circuit. The rectifier circuit electrically connected with the motherboard converts the input voltage into the first voltage configured for powering the motherboard. The controlling unit electrically connected with the motherboard outputs the control signals based on an operation state of the motherboard. The leakage protection circuit electrically connected with the controlling unit guides the control signals into a signal line before the motherboard being powered. The leakage protection circuit avoids the control signals to the component of the motherboard, and an operation time sequence of the component is not disturbed before being powered. A power distribution board and a server system are also disclosed.

Abstract: Techniques for sidelink (SL) and uplink (UL) full duplex communication with multiple transmission and reception points (multi-TRP) may be performed. In an example, a user equipment (UE) may determine full duplex communication, including simultaneous reception of a SL communication from an SL UE via a first TRP of the UE and transmission of a UL transmission to a base station via a second TRP of the UE, is available. The UE may enable the full duplex communication. The UE may receive, from the SL UE, the SL communication via the first TRP. The UE may transmit, to the base station while simultaneously receiving the SL communication, the UL transmission via the second TRP.

Abstract: An agent engine allocates a collection of agents to scan the surface of an object model. Each agent operates autonomously and implements particular behaviors based on the actions of nearby agents. Accordingly, the collection of agents exhibits swarm-like behavior. Over a sequence of time steps, the agents traverse the surface of the object model. Each agent acts to avoid other agents, thereby maintaining a relatively consistent distribution of agents across the surface of the object model over all time steps. At a given time step, the agent engine generates a slice through the object model that intersects each agent in a group of agents. The slice associated with a given time step represents a set of locations where material should be deposited to fabricate a 3D object. Based on a set of such slices, a robot engine causes a robot to fabricate the 3D object.

Abstract: A method for originating a vending transaction via machine-readable code includes storing, in a memory of a computing device, an account identifier associated with a transaction account, reading, by an optical imaging device of the computing device, a machine-readable code displayed on a vending machine, wherein the machine-readable code is encoded with at least a device identifier, electronically transmitting, by a transmitting device of the computing device, at least the device identifier and an account identifier to a third party system, and receiving, by a receiving device of the computing device, a transaction confirmation indicating approval of a payment transaction involving the transaction account and the vending machine.

Abstract: A light-emitting diode display panel, a manufacturing method thereof, and an organic light-emitting diode display device are provided. The light-emitting diode display panel includes: a base substrate including a display region and a peripheral region surrounding the display region; a plurality of sub-pixels located in the display region and located at a side of the base substrate; a color-resistance layer located at a side of a second electrode in the sub-pixel away from the base substrate; and a light-blocking structure located in the peripheral region and being an annular structure surrounding the plurality of sub-pixels. The light-blocking structure includes a first light-blocking structure and a second light-blocking structure. The first light-blocking structure includes at least one interval extending in a direction from the display region pointing to the peripheral region. The second light-blocking structure at least fully fills the interval.

Abstract: Provided is an elliptical multi-mesa laser structure, including a substrate layer, an N-DBR, a functional layer and a P-DBR sequentially arranged from bottom to top. The substrate layer is fixedly connected with an N contact layer. The N-DBR is fixedly connected to a top of the substrate layer, and the N contact layer is arranged around the N-DBR. A space layer is inserted in the N-DBR. The functional layer is fixedly connected to a top of the N-DBR. The P-DBR is fixedly connected to a top of the functional layer, and a top of the P-DBR is fixedly connected with a P contact layer. Another space layer is inserted into the P-DBR.

Abstract: A controller used in an isolated switching converter. The controller has an error amplifying circuit for generating a first compensation signal based on the difference between an output feedback signal and a reference voltage, a control generator for generating a first and second control signals based on the first compensation signal, an isolation circuit for providing a first synchronous signal electrically isolated from the first control signal and a second synchronous signal electrically isolated from the second control signal, an upper threshold generator for providing an upper threshold voltage, and a peak current generator for providing a peak current signal for controlling a peak value of a current flowing through the primary switch based on the first synchronous signal, the second synchronous signal and the upper threshold voltage. The upper threshold voltage is adjusted above a first upper threshold voltage when a peak power demand is made.

Abstract: Provided are a video preloading method and apparatus, a device, and a medium. The method includes: in response to determining that a length of a buffered video reaches a first numerical value, creating and executing a preloading task, where the buffered video is a current video that is buffered and is to be played, and the preloading task is used for preloading a subsequent video; and in an execution process of the preloading task, in response to determining that the length of the buffered video is less than or equal to a second numerical value, cancelling the preloading task, where the second numerical value is less than the first numerical value.

Abstract: Provided are a control system for an electric lifting desk and an electric lifting desk. The control system includes a controller and a motor driver circuit, and the controller includes a microprocessor, a measured voltage acquisition circuit and a measured voltage acquisition terminal. The motor driver circuit is configured to drive the lifting of at least one column, and the motor driver circuit includes a measured voltage generation circuit and a measured voltage output terminal. When the number of columns and/or the column type of the electric lifting desk is different, the value of a measured voltage output by the measured voltage generation circuit is different. The microprocessor is configured to determine whether the controller is connected to the motor driver circuit according to a voltage signal provided by the measured voltage acquisition circuit, and to determine the number of columns and/or the column type.

Abstract: A controller used in an isolated switching converter having a transformer and a primary switch. The controller has an error amplifying circuit, a control generator, an isolation circuit and a threshold generator. The error amplifying circuit generates a first compensation signal based on the difference between an output feedback signal and a reference voltage. The control generator generates a first and second control signals based on the first compensation signal. The isolation circuit provides a first synchronous signal electrically isolated from the first control signal. The threshold generator generates a current threshold voltage for controlling a maximum current flowing through the primary switch. The current threshold voltage gradually increases during a start-up period, and is generated based on the first synchronous signal after the start-up period.

Abstract: The engineering helmet includes a shell having a plurality of fixing components, a head band installed inside the shell, a plurality of suspension straps connected to the head band and two ends of the suspension straps each having a clip and an adjusting component respectively snapped with the fixing component and the head band of the shell, and a chin strap, characterized in that a buffer installed inside each end of a plurality of suspension straps, meanwhile the buffer being secured to the clip and the adjusting component to enhance the absorbing of impact force from the shell, thereby improving the protection and safety of the engineering helmet.

Abstract: A controller used in an isolated switching converter having a transformer, a primary switch and a secondary switch. The controller has an error amplifying circuit, a control generator and an isolation circuit. The error amplifying circuit generates a first compensation signal based on the difference between a reference voltage and an output feedback signal. The control generator generates a first and second control signals based on the first compensation signal. The isolation circuit has a first channel for providing a first synchronous signal electrically isolated from the first control signal, for controlling a peak value of a current flowing through the primary switch, and has a second channel for providing a second synchronous signal electrically isolated from the second control signal, for controlling the switching frequency of the primary switch.

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a second UE, sidelink control information for performing full-duplex communications with the second UE. The sidelink control information may include an indication of resources reserved by the second UE, an indication of one or more transmit beam directions associated with the resources reserved by the second UE, or both. The first UE may receive, via the resources reserved by the second UE, a first message using a first receive beam based on the sidelink control information. The first UE may transmit, via the resources reserved by the second UE, a second message using a first transmit beam of the first UE, a direction of the first transmit beam being different from a direction of the first receive beam.

Abstract: Methods, systems, and devices for wireless communication at a first user equipment (UE) are described. A first UE may transmit control signaling to reserve a first set of time and frequency resources for a sidelink transmission. In some examples, the control signaling may indicate one or more parameters to be used by a second UE to identify a second set of time and frequency resources for performing a full-duplex communication with the first UE. In some examples, the first UE may then communicate with the second UE based on the reserved first set of time and frequency resources and the indicated one or more parameters associated with the second set of time and frequency resources.

Abstract: The present disclosure discloses a movable box and a method for controlling the same, and a package storage device. The movable box includes a box body, a box door, a security lock and a verification component. The security lock is connected between the box body and the box door, the verification component is disposed on a surface of the box door and is connected to the security lock, and the verification component is configured to acquire verification information, and control the security lock to be unlocked in response to the verification information being preset information, and a first locking member is further disposed in the box body at a bottom thereof, and the first locking member protrudes downward from the bottom of the box body.