Abstract: The present disclosure discloses an apparatus and method for distributedly training a model, an electronic device, and a computer readable storage medium. The apparatus may include: a distributed reader, a distributed trainer and a distributed parameter server that are mutually independent. A reader in the distributed reader is configured to acquire a training sample, and load the acquired training sample to a corresponding trainer in the distributed trainer; the trainer in the distributed trainer is configured to perform model training based on the loaded training sample to obtain gradient information; and a parameter server in the distributed parameter server is configured to update a parameter of an initial model based on the gradient information of the distributed trainer to obtain a trained target model.

Abstract: A camera assembly includes an infrared laser system, a camera, a flicker detector, and a light-filtering piece. The infrared laser system has an out-light surface. Infrared emitted by the infrared laser system propagates outside of the camera assembly through the out-light surface. The out-light surface of the infrared laser system, an in-light surface of the camera, and an in-light surface of the flicker detector face a same direction and are staggered from each other. The light-filtering piece covers the in-light surface of the flicker detector and is configured to filter out infrared. The flicker detector is configured to detect a frequency of visible light in external light filtered by the light-filtering piece. When the camera assembly is applied to an electronic device, photographing performance of the electronic device is good.

Abstract: The present disclosure relates to optical lenses, camera modules, and electronic devices. One example optical lens includes a front lens element group, a first reflector, and a rear lens element group that are sequentially arranged in a direction from an object side to an image side. The first reflector is configured to reflect a ray from the front lens element group to the rear lens element group. The front lens element group is a fixed lens element group, and the first reflector is rotatably disposed in the lens to implement optical image stabilization.

Abstract: A photographic device strap comprises a strap assembly, wherein one end of the strap assembly is provided with a first external-connection assembly and the other end is provided with a second external-connection assembly; the first external-connection assembly comprises at least one first locking component, a connection seat and a first connection sub-assembly detachably connected to the connection seat; and each of the first locking component is mounted on the connection seat. In the photographic device strap, the first external-connection assembly and the second external-connection assembly connect to photographic device. The first locking component locks the connection seat onto photographic device. The first and second external-connection assemblies enhance the universal applicability of the photographic device strap. The first connection sub-assembly facilitates the detachable connection of the strap assembly to the connection seat, making it easy to store and disassemble.

Abstract: An optical lens includes a front lens group, a first turning element, a first rear lens group, and a second rear lens group. The front lens group includes a first front lens group and a second front lens group. When the first turning element is at a first position, the first turning element is on an image side of the first front lens group and reflects an emergent light beam of the first front lens group, and the optical lens has a first effective focal length F1. When the first turning element is at a second position, the first turning element is on an image side of the second front lens group and reflects an emergent light beam of the second front lens group, and the optical lens has a second effective focal length F2. The second effective focal length F2 is greater than the first effective focal length F1.

Abstract: The present disclosure discloses a lens driver, which applied to a photographic device. The photographic device includes a focal ring. The lens driver includes a first housing, a driving assembly, and a mounting member. The driving assembly is arranged on the first housing and is configured to adjust the focal ring. The mounting member is arranged on the first housing and is configured to install a battery. The battery is electrically connected to the driving assembly through the mounting member. In the present disclosure, the lens driver is provided with the mounting member for installing the battery, and the mounting member is capable of electrically conducting the battery and the driving assembly. When in use, it is only need to install the battery on the mounting member, which is more convenient.

Abstract: An optical image stabilization apparatus and a camera module are provided. The optical image stabilization apparatus includes: a shape memory alloy driving component, a fixed component, and a movable component. The shape memory alloy driving component is disposed between the fixed component and the movable component to drive the movable component to move relative to the fixed component. The shape memory alloy driving component is connected with the fixed component and/or the movable component by means of through a metal spacer, and the metal spacer is detabably connected with the fixed component and/or with the movable component.

Abstract: To facilitate installation work of a position detection sensor. A display unit of the position detection sensor includes a plurality of display elements arranged on a housing at positions different from each other along the first direction, and displays a symbol indicating a position of the displacement body along the first direction. The position detection sensor controls the display unit to display in different modes, by displaying the symbol at different positions on the plurality of display elements, a first state in which the displacement body exists at a first position corresponding to one end portion of a displacement range, a second state in which the displacement body exists at a second position corresponding to the other end portion of the displacement range, and an intermediate state in which the displacement body exists at an intermediate position between the first position and the second position.

Abstract: A command including information associated with a relocation of data from a first storage device to a second storage device of multiple storage devices of a storage system is transmitted. The command causes the first storage device to relocate the data to the second storage device while bypassing a storage controller.

Abstract: A window air conditioner includes an outdoor unit, an indoor unit and a connecting device. The connecting device includes a third housing, and the third housing is connected to a first housing and a second housing. The second housing is movable relative to the third housing in a first predefined direction in order to adjust a position of the indoor unit. The connecting device further includes at least one cooperating assembly connected to the third housing. The indoor unit further includes at least one locking assembly connected to the second housing. The at least one locking assembly is configured to cooperate with the at least one cooperating assembly for locking when the second housing moves to a first position in the first predefined direction, in order to limit a position of the second housing and position the air outlet at a predefined height.

Abstract: A window air conditioner includes an outdoor unit, an indoor unit, a connecting device, at least one first sliding part, and at least one second sliding part. The outdoor unit is located on an outdoor side. The outdoor unit includes a first housing. The indoor unit includes a second housing. The connecting device is configured to be connected to the indoor unit and the outdoor unit. The connecting device includes a third housing. The third housing is connected to the first housing and the second housing. The at least one first sliding part is fixedly connected to the second housing. The at least one second sliding part is fixedly connected to the third housing and is slidably connected to the at least one first sliding part, so the second housing is movable relative to the third housing in a second predefined direction to adjust the position of an air outlet.

Abstract: A controllable bending mechanism of an endoscope includes a hollow tube, wherein a plurality of groups of gap sets are disposed on the hollow tube; the plurality of groups of gap sets extend along an axial direction of the hollow tube; each group of gap sets includes a first gap portion and a second gap portion, wherein the first gap portion is distributed in a first circumferential direction of the hollow tube; the second gap portion is distributed in a second circumferential direction of the hollow tube; the first gap portion includes two gaps; the length of each gap is equivalent to 1/2 of that of the circumference; the second gap portion includes two gaps; the length of each gap is equivalent to 1/2 of that of the circumference.

Abstract: A viral exposure signature (VES) that can identify early stage, pre-symptomatic hepatocellular carcinoma (HCC) among at-risk patients is described. The VES was developed using serological profiling and synthetic virome technology to identify unique viral peptide epitopes corresponding to 61 viral species. Methods of identifying a subject with early stage (pre-symptomatic) HCC using the VES are described.

Abstract: The present invention belongs to the technical fields of biomedicine and molecular biology, and particularly relates to a single-chain fragment variable (scFv) targeting human platelet-derived growth factor receptor (PDGFR)-? and use thereof in chimeric antigen receptor (CAR)-T cell immunotherapy. In the present invention, a scFv sequence targeting a human-derived PDGFR? antigen is first obtained by immunizing a mouse, and then a second-generation CAR is constructed based on this, and additionally a CAR-T cell is obtained via lentivirus infection. The CAR-T cell can effectively kill a PDGFR? antigen-positive 293T cell. The present invention provides a brand-new idea for eliminating PDGFR?-positive cells to treat chronic kidney diseases, chronic liver diseases, cardiovascular diseases and various tumor diseases including various organ fibrosis, and has extremely attractive further development value and application prospects.

Abstract: A window air conditioner includes an outdoor housing, a motor bracket, and an electric control box. The length direction, width and the depth directions of the electric control box are aligned with the width direction, height and length directions of the outdoor housing, respectively. The electric control box includes an inner box body, a circuit board, and an outer box body. The outer box body covers the periphery of the inner box body, with a side surface of the outer box body facing the indoor portion being a closed surface, and an another side surface facing the side surface of the outer box body having an opening for a heat sink to pass through, while an remaining area of the another side surface is also a closed surface. An air outlet gap is formed on the side of the outer box body close to the outdoor housing.

Abstract: A quick-installation equal-radius straight-way joint structure includes a first shell, second shells, positioning blocks, support pins, and retaining rings. The first shell is a hollow cylindrical or branched structure arranged horizontally, and left and right side surfaces of the first shell are each concentrically provided with the hollow cylindrical second shell, which are integrally formed. The upper and lower sides of the inner circumferential surface in the second shell are coaxially provided with arc-shaped slots communicating with the interior of the second shell, the upper and lower ends of the outer circumferential surface of the second shell are screwed with the positioning blocks, and the outer surface of the positioning block is embedded with an internal threaded hole. The retaining ring is coaxially arranged in the arc-shaped slot, and a T-shaped support pin is coaxially arranged in the internal threaded hole of the positioning block.

Abstract: A method for data transmission is provided. The method includes, at an initiator computing device, receiving a data payload to be transmitted to a target computing device for storage using the nonvolatile memory express over fabric (NVMe-oF) protocol, wherein the data payload is represented as a plurality of logical blocks. Using a compression engine, the data payload is compressed into a plurality of physical blocks having a smaller total data size than the plurality of logical blocks. A write request is transmitted to the target computing device, the write request including the plurality of physical blocks, and metadata specifying a correspondence between each logical block of the plurality of logical blocks and one or more corresponding physical blocks of the plurality of physical blocks.

Abstract: The present application provides a display device and a driving method thereof. The display device includes a first monochrome screen driven by a first sub-display signal and cooperating with first sub-light to display a first sub-image in the first subframe and driven by a second sub-display signal and cooperating with second sub-light to display a second sub-image in a second subframe, a second monochrome screen driven by a second display signal and cooperating with second light to display a second image in the frame (including first and second subframes), a first light source projecting first light (including first and second sub-light), and a second light source projecting second light. A first image (including first and second sub-images) and a second image cooperatively present a target image.

Abstract: A method for fabrication of an anisotropic magnet comprises placing magnet alloy feedstock particles in a deformable metallic container and thermomechanically working the filled container in a manner to elongate the filled container and reduce its cross-sectional area to consolidate the magnet alloy particles to an elongated shape and impart a preferential grain texture to the consolidated, elongated shape. The consolidated, elongated shape is machined to a near-final magnet shape that has a smaller dimension such as magnet length and that includes a metallic tubular skin thereon.

Abstract: Real-time electrocardiogram (“ECG”) monitoring system for wearable devices. Embodiments of the invention are based on parallel Delta modulator architecture with local maximum point and local minimum point algorithms to detect QRS and PT waves. The parallel Delta modulators preferably convert ECG signals to two channels of three-state Delta modulated bitstreams. Using embodiments of the invention, real-time PR and RT intervals, as well as ST segment measurements, can be achieved in long-term wearable ECG recording devices.