Abstract: The present disclosure describes a system and method for LiDAR scanning. The system includes a light source configured to generate one or more light beams; and a beam steering apparatus optically coupled to the light source. The beam steering apparatus includes a first rotatable mirror and a second rotatable mirror. The first rotatable mirror and the second rotatable mirror, when moving with respect to each other, are configured to: steer the one or more light beams both vertically and horizontally to illuminate an object within a field-of-view; redirect one or more returning light pulses generated based on the illumination of the object; and a receiving optical system configured to receive the redirected returning light pulses.

Abstract: Provided are a method and device employing a smart contract to realize identity-based key management. The method comprises: running a smart contract, and executing a key management process, wherein the key management process comprises: when a key of a target user requires an update and the target user is not a supervised user, generating a master public key and a master private key pertaining to the target user; acquiring, from a blockchain, identity information of the target user; generating a first target private key according to the master public key and the master private key pertaining to the target user and the identity information of the target user; and replacing a current private key of the target user with the first target private key.

Abstract: This application provides a communication method, and a distance determining method and apparatus. A first terminal device sends a first signal. A second terminal device determines whether a location of the second terminal device is a specified area. When the location of the second terminal device is the specified area, the second terminal device sends feedback information. When the location of the second terminal device is not the specified area, the second terminal device does not send feedback information or sends less feedback information. This method is applicable to communication, for example, V2X communication or D2D communication, between terminal devices on a sidelink.

Abstract: There is provided a code retrieval method and apparatus based on a large language model, an electronic device and a readable storage medium, which relates to the field of artificial intelligence technologies, such as large language model technologies, big data technologies, cloud service technologies, or the like.

Abstract: A compact LiDAR device is provided. The compact LiDAR device includes a first mirror disposed to receive one or more light beams and a polygon mirror optically coupled to the first mirror. The polygon mirror comprises a plurality of reflective facets. For at least two of the plurality of reflective facets, each reflective facet is arranged such that: a first edge, a second edge, and a third edge of the reflective facet correspond to a first line, a second line, and a third line; the first line and the second line intersect to form a first internal angle of a plane comprising the reflective facet; and the first line and the third line intersect to form a second internal angle of the plane comprising the reflective facet. The first internal angle is an acute angle; and the second internal angle is an obtuse angle.

Abstract: There is provided a code recommendation method and apparatus, an electronic device and a storage medium, which relates to the field of software development technologies, artificial intelligence technologies, or the like. A specific implementation includes: acquiring a relevant code segment required by a recommended code from a current code file; acquiring code dependence information required by the recommended code; and performing code recommendation based on the relevant code segment, the code dependence information and a pre-trained code recommendation model.

Abstract: Embodiments discussed herein refer to using LiDAR systems for steering consecutive light pulses using micro electro-mechanical system (MEMS) to illuminate objects in a field of view. Embodiments discussed herein also refer to using a multiple lens array to process returned light pulses.

Abstract: Embodiments of the disclosure relate to a method, apparatus, device and storage medium for watermark embedding and watermark extraction. The watermark embedding method includes: determining, based on a set of key points identified in an image to be processed, at least one image block to be processed in the image to be processed; generating, based on watermark information and the at least one image block to be processed, at least one target image block corresponding to the at least one image block to be processed respectively, each target image block being embedded with at least a portion of the watermark information; and generating a target image for the image to be processed by replacing the at least one image block to be processed with the at least one target image block in the image to be processed respectively.

Abstract: Devices, systems, and methods for treating aneurysms are disclosed herein. According to some embodiments, the present technology includes a treatment system comprising a delivery shaft, a manipulation shaft slidably positioned within the lumen of the delivery shaft, and an occlusive device configured for implantation within the aneurysm. The occlusive device can comprise a plurality of filaments that are secured to one another at a proximal end of the occlusive device by a cured material. The occlusive device can comprise inner and outer layers of braided filaments, wherein the proximal end region of the inner layer has an exposed portion that extends proximally beyond the proximal end region of the outer layer, and wherein the cured material extends into and fills interstices between the braided filaments at the proximal end regions of the inner and outer layers.

Abstract: Disclosed are a display panel, a display device and a driving method. The display panel includes a plurality of sub-pixel units located in areas formed by the plurality of scanning signal lines and the plurality of data signal lines, and at least two adjacent sub-pixel units in the first direction and the second direction constitute a pixel island. A plurality of control units each corresponding to a sub-pixel unit row in the pixel island are provided. The control unit includes a control terminal, an input terminal and an output terminal. The control unit is configured to transmit a signal from the input terminal to the output terminal under control of a first signal transmitted by a control signal line corresponding to the control unit, and stop transmitting the signal from the input terminal to the output terminal under control of a second signal transmitted by the control signal line.

Abstract: A method and apparatus for watermark extraction, a computer device and a storage medium are provided. The method includes: acquiring an image to be detected; inputting the image to be detected into a watermark recognition network and acquiring a watermark detection result corresponding to the image to be detected; and when the watermark detection result includes presence of a hidden watermark, extracting the hidden watermark in the image to be detected based on at least one extraction algorithm corresponding to the watermark detection result.

Abstract: Drug delivery articles, resident articles, and retrieval systems e.g., for gram-level dosing, are generally provided. In some embodiments, the residence articles are configured for transesophageal administration, transesophageal retrieval, and/or gastric retention to/in a subject. In certain embodiments, the residence article includes dimensions configured for transesophageal administration with a gastric resident system. In some cases, the residence article may be configured to control drug release e.g., with zero-order drug kinetics with no potential for burst release for weeks to months. In some embodiments, the residence articles described herein comprise biocompatible materials and/or are safe for gastric retention. In certain embodiments, the residence article includes dimensions configured for transesophageal retrieval. In some cases, the residence articles described herein may comprise relatively large doses of drug (e.g., greater than or equal to 1 gram).

Abstract: The present disclosure provides compositions, methods, and kits that enable the in situ growth of polymers on or within a subject. In some aspects, the monomer, dopamine, polymerizes in vivo to form a polymer on a tissue. In additional aspects, the compositions, methods, and kits are useful for treating or preventing a disease or disorder.

Abstract: An anti-TSLP nanobody and a use thereof are provided. A coding sequence encoding the anti-TSLP nanobody, corresponding expression vector and host cell capable of expressing the nanobody, and a method for producing the anti-TSLP nanobody are also provided. The anti-TSLP nanobody has a good TSLP/TSLPR blocking activity and is expressed using pichia pastoris. Its fermenter expression yield can reach 17-23 g/L.

Abstract: The present disclosure provides a frequency generator, and belongs to the technical field of communications. The frequency generator provided by the present disclosure includes: N stages of mixing modules and N stages of comb spectrum generation modules. Each of the comb spectrum generation modules is configured to provide a mixing module in a same stage as the comb spectrum generation modules with one stage of fundamental signal group generated according to a second reference signal; and different stages of fundamental signal groups are generated based on different second reference signals. A 1st-stage mixing module generates a 1st-stage mixed signal according to a 1st-stage fundamental signal group and a first reference signal, and the 1st-stage fundamental signal group includes a plurality of harmonic signals with a first frequency as a fundamental frequency.

Abstract: An antibacterial polycarbonate composite includes the following components in parts by weight: 100 parts of a polycarbonate, 0.01-5 parts of a nanometer metal oxide, and 0.01-5 parts of a silicon-containing high-molecular polymer; and based on a total weight of the antibacterial polycarbonate composite, a content of a silver ion is 100-1200 ppm.

Abstract: This invention presents a function allocation system for an autonomous vehicle (AV). During the operations of the AV, some or all of its automated driving capabilities or functions could be downgraded due to long-tail events or malfunctioning. The roadside intelligent infrastructure, or the cloud platform, could supplement some or all of AV's automated driving functions, including sensing, prediction and decision-making, and/or control functions. The function allocation system dynamically allocates these functions between AV and intelligent infrastructure, achieving a higher system intelligence level S than the downgraded vehicle intelligence level V. In addition, a function allocation system could dynamically allocate sensing, prediction and decision-making, and/or control functions between AV and a cloud platform. This invention also presents a function integration system or a fusion system for an AV.

Abstract: Occlusion devices are disclosed herein. According to some embodiments, the present technology includes a mesh configured to be positioned within an aneurysm cavity, the mesh having a low-profile configuration for delivery through a catheter to the aneurysm cavity and an expanded configuration for implantation in the aneurysm cavity. The mesh can comprise a first portion configured to be positioned over the aneurysm neck and a second portion configured to be positioned between the first portion and a dome of the aneurysm. The mesh can comprise a copper material at the second portion of the mesh, wherein the copper material is configured to promote thrombosis within the aneurysm cavity.

Abstract: The disclosure provides a phase shifter, a manufacturing method thereof and an antenna, and belongs to the field of communication technology. The phase shifter includes a first substrate; a signal line and reference lines on the first substrate; a first insulating layer on the signal line; a plurality of electrode film bridges on a side of the first insulating layer distal to the signal line; and a first transmission structure on the first insulating layer and electrically connected to the signal line; and an orthographic projection of the first transmission structure on the first substrate is not overlapped with an orthographic projection of the plurality of electrode film bridges on the first substrate.

Abstract: The present invention discloses a recombinant RBD trimer protein capable of simultaneously generating cross neutralization activity for various severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) epidemic strains. The RBD trimer protein is taken as an antigen and supplemented with an adjuvant to immunize an organism, so that a high-titer neutralizing antibody aiming at various SARS-CoV-2 epidemic strains can be generated at the same time, and the antibody has a certain broad-spectrum property and can be used for treating and/or preventing SARS-CoV-2 infection and/or coronavirus disease 2019.