Abstract: A distribution control device includes a first creation unit configured to create, for each of a plurality of virtual viewpoints arranged for an object represented by 3D data constituting 3D video content, one-sided 3D data in which an amount of data of a portion of the object that cannot be visually recognized from the virtual viewpoint is reduced, and a distribution unit configured to distribute data including a mesh and a texture as one-sided 3D data of one virtual viewpoint among the one-sided 3D data for each of the virtual viewpoints to a terminal of a user according to a viewing angle of the user in a virtual space where the object is arranged.

Abstract: A distribution device according to one embodiment is a distribution device for distributing stereoscopic video content of an object composed of a polygon mesh and a texture to a terminal, the device including: a first chunk creation unit configured to create pieces of first chunk data from each piece of mesh frame data representing each piece of frame data of the polygon mesh; a second chunk creation unit configured to create pieces of second chunk data from each piece of texture frame data representing each piece of frame data of the texture; and a chunk distribution unit configured to transmit, in response to a chunk distribution request from the terminal, at least one of first chunk data and second chunk data related to the chunk distribution request to the terminal.

Abstract: The present invention provides a hardware-aware mixed-precision quantization method and system based on a greedy search. It comprises quantizing all layers in the neural network to the uniform bit-width, conducting training-aware quantization, and acquiring the trained model, baseline inference accuracy, and total bit operation counts. Each layer in the neural network undergoes post-training quantization with low precision individually, and the corresponding inference accuracy and total bit operation counts for each layer are recorded. Single-layer sensitivity is computed based on the baseline inference accuracy, total bit operation counts, and the inference accuracy and total bit operation counts of each layer and guides the current total bit operation counts until reaching the preset maximum bit operation counts. Meanwhile, quantized layers and precision are recorded, determining the mixed-precision quantization strategy.

Abstract: An ionizable lipid based on cyclohexanediamine and a lipid nanoparticle, and a preparation method therefor and use thereof. The ionizable lipid based on cyclohexanediamine is a compound represented by formula (a), wherein n is independently selected from natural numbers of 0-8; R1, R2, R3 and R4 are independently selected from C8-C24 alkyl, C8-C24 alkyl substituted by a substituent group, C8-C24 alkenyl, C8-C24 alkenyl substituted by a substituent group, and C8-C24 alkynyl and C8-C24 alkynyl substituted by a substituent group. The lipid nanoparticle formed by the ionizable lipid based on cyclohexanediamine has the advantages of biodegradability, high in-vivo and in-vitro transfection efficiency, and the like, and has a good clinical application prospect.

Abstract: An ionizable lipid based on endogenous dicarboxylic acid as well as a preparation method and use thereof. The ionizable lipid based on endogenous dicarboxylic acid is a compound represented by Formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof; wherein, X is selected from — Y is selected from —O— and —NH—; R is selected from C6-C20 alkyl, C6-C20 alkyl substituted by a substituent group, C6-C20 alkenyl, C6-C20 alkenyl substituted by a substituent group, C6-C20 alkynyl, and C6-C20 alkynyl substituted by a substituent group; n is an integer of 1-8.

Abstract: A distribution system according to one embodiment includes: an arrangement unit that arranges a plurality of virtual viewpoints around an object represented by stereoscopic data constituting stereoscopic video content; a first creation unit that creates, for each of the virtual viewpoints, one side stereoscopic data in which an amount of data of a portion of the object that cannot be visually recognized from the virtual viewpoint is reduced; and a distribution unit that distributes one side stereoscopic data of one virtual viewpoint among the one side stereoscopic data for each of the virtual viewpoints to a terminal of a user according to a position and a field of view of the user in a virtual space in which the object is arranged.

Abstract: A system control apparatus for acquiring a prototype manifest file that is a basis of a manifest file to be transmitted to a viewing client in a system for delivering video data over a network, includes: an estimation unit configured to analyze content of a prototype manifest file acquired from an origin server, to determine a next acquisition timing of the prototype manifest file; and an acquisition unit configured to acquire the prototype manifest file from the origin server, based on the next acquisition timing determined by the estimation unit.

Abstract: A distribution control device configured to distribute three-dimensional video data including a plurality of meshlets and a texture of each meshlet to a client PC, the device comprising: a distribution control unit configured to select a high-quality meshlet as a meshlet under a viewpoint of a user based on information regarding the viewpoint and the field of view of the user received from the client PC, select a high-quality texture as the texture, select a low-quality meshlet as a meshlet at a position not present in the field of view of the user, and select a low-quality texture as the texture; and a transmission processing unit that transmits the meshlet and the texture selected by the distribution control unit to the client PC.

Abstract: A system control apparatus for acquiring a prototype manifest file that is a basis of a manifest file to be transmitted to a viewing client in a system for delivering video data over a network, includes: an estimation unit configured to analyze content of a prototype manifest file acquired from an origin server, to determine a next acquisition timing of the prototype manifest file; and an acquisition unit configured to acquire the prototype manifest file from the origin server, based on the next acquisition timing determined by the estimation unit.