Abstract: A bending portion of an endoscope and the endoscope includes a hollow tube, wherein a plurality of groups of gap portions are disposed on the hollow tube; the plurality of groups of gap portions extend in sequence along an axial direction of the hollow tube; each group of the gap portions includes at least one gap; the gaps are distributed in a circumferential direction of the hollow tube; an included angle of a preset angle is present along the length direction of the gap between a length direction of one end or a length direction of two ends of the gap and a radial direction of the hollow tube; and the radial direction of the hollow tube is perpendicular to the axial direction of the hollow tube.

Abstract: Disclosed is a local terrain perception method for legged robots, comprising following steps: S1, installing at least one lidar on legged robot, acquiring extrinsic parameters of lidar with respect to legged robot body coordinate system, and transforming point cloud scanned by lidar into legged robot body coordinate system; S2, performing motion distortion elimination on point cloud, transforming point cloud subjected to motion distortion elimination into legged robot gravity coordinate system, and reserving point cloud within set range; S3, performing dimension reduction on point cloud to obtain height information matrix; S4, performing hole-filling based on height information matrix; S5, eliminating influence of leg point clouds of legged robot on height matrix based on height information matrix; and S6, analyzing processed height information matrix, and calculating slope information matrixes and obstacle information matrix which are used for foothold planning and obstacle avoidance of legged robot.

Abstract: The present application relates to the field of supports for electronic devices, in particular to a magnetic adsorption type support. The magnetic adsorption type support includes a magnetic adsorption fixing portion, a first arc-shaped structure, and a second arc-shaped structure rotationally connected to the first arc-shaped structure, the first arc-shaped structure and the second arc-shaped structure form a closed ring structure when being rotated to abut against each other. At least one of the first arc-shaped structure and the second arc-shaped structure is configured to be magnetically adsorbed on the electronic device. The magnetic adsorption fixing portion configured to be adsorbed on an electronic device. And the magnetic adsorption fixing portion is of a ring structure capable of being opened and closed.

Abstract: A surgical system (100), navigation system (118), and method are provided. The method includes obtaining, via a first imaging device (112a), a first image of an object in a surgical area; obtaining, via a second imaging device (112b), a second image of the first imaging device (112a ), where the second image comprises one or more second tracking markers (412) arranged in a first position. The method further includes obtaining, via the first imaging device (112a), one or more additional first images of the object; obtaining, via the second imaging device (112b), one or more additional second images of the first imaging device (112a); and determining, based on the one or more additional first images and the one or more additional second images, whether the object has moved and/or whether the first imaging device (112a) has moved relative to the object.

Abstract: A surgical system, navigation system, and method are provided. An illustrative system includes a robot mounted to a movable base, the robot including one or more robotic arms, a processor, and memory coupled with the processor. The memory includes data stored thereon that, when processed by the processor, enables the processor to: receive image data describing a position of the one or more robotic arms relative to a surgical target area; determine a current position of the robot is sub-optimal for enabling the robot to access the surgical target area; and provide at least one of instructions and animations for moving the movable base from the current position to a new position.

Abstract: One aspect of the embodiments relates to a cell preservation solution, comprising: 20 mM~50 mM of sucrose; 20 mM~50 mM of mannitol, 10 mM~50 mM of lactobionic acid, 5 mM~20 mM of glucose, 1 mM~3 mM of adenosine, 1 mM~5 mM of reduced glutathione, 1 mM~2 mM of dextran-40, 10 mM~30 mM of potassium dihydrogen phosphate, 10 mM~30 mM of potassium carbonate, 10 mM~30 mM of potassium chloride, 5 mM~30 mM of sodium chloride, 10 mM~60 mM of sodium hydroxide, 10 mM~60 mM of potassium hydroxide, 0 mM~20 mM of vitamin E, 0 mM~25 mM of 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid, and 0%~10% dimethyl sulfoxide. Another aspect of the embodiments relates to a cell preservation method, which uses the cell preservation solutions described in the present application to store cells.

Abstract: An optical element, an optical element monitoring system, and a method monitor in real time whether an optical element such as a diffractive optical element or a diffuser in an active light emitting module is damaged or falls off, and turn off a laser when the optical element is damaged or falls off.

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 relates to the field of supports for electronic devices, in particular to a magnetic adsorption type support. The magnetic adsorption type support includes a magnetic adsorption fixing portion and an overturning support portion, where the magnetic adsorption fixing portion is capable of being adsorbed on an electronic device; the overturning support portion is hinged to the magnetic adsorption fixing portion and is capable of being overturned towards or away from the magnetic adsorption fixing portion, and the overturning support portion cooperates with the magnetic adsorption fixing portion to support the electronic device when being overturned away from the magnetic adsorption fixing portion; and the magnetic adsorption fixing portion is of a ring structure capable of being opened and closed.

Abstract: A device comprising a board, an integrated device coupled to the board, a shield frame coupled to the board, a shield layer coupled to the shield frame, wherein the shield layer comprises a first surface, a second surface and a plurality of openings, a thermal interface material coupled to (i) the integrated device and (ii) the shield layer. The thermal interface material is located in the plurality of openings of the shield layer. The thermal interface material touches the integrated device, the first surface of the shield layer and the second surface of the shield layer.

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: Disclosed are an earcap structure and an earphone. The earcap structure includes an earcap body provided with an installation channel, the installation channel is sleeved on an outside of an in-ear body of an earphone, a cavity is provided in a wall of the installation channel, and the cavity is filled with a fluid filler to make the cavity squeezed and deformed in response to that an outside of the earcap body is in contact with a concha cavity.

Abstract: The present disclosure provides an automatic leveling method for a gimbal, and a gimbal. The gimbal includes a mounting assembly for mounting a photographic device and a driving assembly connected to the mounting assembly and configured for driving the mounting assembly to move. The method includes: obtaining a center of gravity of the photographic device and determining whether the center of gravity of the photographic device is in an unbalanced position in response to that the photographic device is mounted on the mounting assembly; generating a control signal for adjusting the center of gravity of the photographic device in case the center of gravity of the photographic device is in the unbalanced position; and controlling the driving assembly to operate according to the control signal to drive the mounting assembly to move until the photographic device reaches a center-of-gravity balance position.

Abstract: A motorized gimbal is provided, including a base, a carrier assembly, an adjustment mechanism, and a control assembly. The adjustment mechanism includes a first adjustment component, a second adjustment component, and a third adjustment component. The first end of the third adjustment component is connected to the carrier assembly, and the third adjustment component is configured to drive the carrier assembly to rotate horizontally. The first adjustment component is connected to the second end of the third adjustment component and configured to drive the third adjustment component to drive the carrier assembly to perform a pitch motion. The second adjustment component is connected to the first adjustment component and configured to drive the first adjustment component so as to drive the third adjustment component to move in a horizontal direction. The control assembly is configured to control an operating state of at least one of the three adjustment components.

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.