Abstract: An intraocular lens (IOL) based on a metasurface, includes: a front optical lens, a rear optical lens, an equatorial plane, and an optical loop. The front optical lens and the rear optical lens are connected through the equatorial plane. The optical loop is connected with the equatorial plane. A metasurface structure is arranged on the equatorial plane. The metasurface structure includes a plurality of nanostructure units with a phase distribution of a planar axicon lens. A Gaussian beam is generated based on a biconvex lens structure of a conventional IOL, and the phase distribution of the planar axicon lens is loaded through a geometric phase of the metasurface structure, such that a Bessel-Gaussian beam is generated.

Abstract: Provided is a three-channel heat sink based on a tri-continuous mesoporous silica structure. including multiple three-channel porous units stacked on one another. Each of the three-channel porous units includes three channels which do not communicate with one another, each of the channels includes at least one flow path. Each of the three-channel porous units includes five flow paths, the five flow paths are arranged in two layers in a vertical direction. When viewed in the vertical direction, four of the five flow paths are enclosed to form a parallelogram pattern, and the fifth flow path is located at a diagonal position of the parallelogram pattern to independently form a third channel. A body formed by the plurality of three-channel porous units stacked on one another is internally provided with three medium flow paths which intersect, contact and do not communicate with one another.

Abstract: Provided is a three-channel heat sink based on a tri-continuous mesoporous silica structure. including multiple three-channel porous units stacked on one another. Each of the three-channel porous units includes three channels which do not communicate with one another, each of the channels includes at least one flow path. Each of the three-channel porous units includes five flow paths, the five flow paths are arranged in two layers in a vertical direction. When viewed in the vertical direction, four of the five flow paths are enclosed to form a parallelogram pattern, and the fifth flow path is located at a diagonal position of the parallelogram pattern to independently form a third channel. A body formed by the plurality of three-channel porous units stacked on one another is internally provided with three medium flow paths which intersect, contact and do not communicate with one another.

Abstract: The present invention provides a preparation method of natural bamboo fiber composites and an application thereof. The method involves treating bamboo with a specific composition of treatment solution to obtain natural bamboo fibers with a length and a diameter that meets certain conditions; then, the natural bamboo fibers are combined with polypropylene fibers to prepare composites, and by controlling process conditions of a preparation process, a high-strength and excellent comprehensive performance composites is finally prepared. The composites produced by the method can be used as a bottom baffle of the air conditioning box in automobiles. Through the method, a high-performance natural bamboo fiber composites are provided.

Abstract: An intraocular lens (IOL) based on a metasurface, includes: a front optical lens, a rear optical lens, an equatorial plane, and an optical loop. The front optical lens and the rear optical lens are connected through the equatorial plane. The optical loop is connected with the equatorial plane. A metasurface structure is arranged on the equatorial plane. The metasurface structure includes a plurality of nanostructure units with a phase distribution of a planar axicon lens. A Gaussian beam is generated based on a biconvex lens structure of a conventional IOL, and the phase distribution of the planar axicon lens is loaded through a geometric phase of the metasurface structure, such that a Bessel-Gaussian beam is generated.

Abstract: A metal oxide ink, a method for manufacturing the metal oxide ink and a method for manufacturing an organic electronic structure using the metal oxide ink. The metal oxide ink includes: a plurality of metal oxide particles suspended in a solvent; and a stabilizer arranged to stabilize the metal oxide particles with a plurality of ligands; wherein the plurality of ligands are arranged to self-dissociate upon a drying process of the solvent.

Abstract: In one embodiment, a method determines thresholds for a multiple bitrate algorithm that adjusts which bitrates for a media program are requested. A first threshold is associated with a first buffer length and a first direction of adjustment and a second threshold is associated with a second buffer length greater than the first buffer length and a second direction of adjustment. The method then determines which threshold applies to a buffer length of a buffer buffering the media program. An adjustment to the multiple bitrate algorithm in the first direction or the second direction based on the threshold that applies where the adjustment in the first direction increases an aggressiveness used by the multiple bitrate algorithm to increase the bitrate requested and the adjustment in the second direction decreases the aggressiveness used by the multiple bitrate algorithm to increase the bitrate requested.

Abstract: In one embodiment, a method determines first information from a component of a computing device to determine when receiving of one or more advertisements will affect an available bandwidth reading that is based on receiving of a media program. Then, the method dynamically disables a multiple bitrate algorithm based upon the first information such that a new bitrate version of the media program cannot be requested by the multiple bitrate algorithm for the media player. Second information is determined from the component of the computing device to determine when the available bandwidth reading will not be affected by receiving of the one or more advertisements. The method then dynamically enables the multiple bitrate algorithm based on the second information. The multiple bitrate algorithm is then allowed to request the different bitrate version of the media program based on the available bandwidth reading.

Abstract: In one embodiment, a method determines thresholds for a multiple bitrate algorithm that adjusts which bitrates for a media program are requested. A first threshold is associated with a first buffer length and a first direction of adjustment and a second threshold is associated with a second buffer length greater than the first buffer length and a second direction of adjustment. The method then determines which threshold applies to a buffer length of a buffer buffering the media program. An adjustment to the multiple bitrate algorithm in the first direction or the second direction based on the threshold that applies where the adjustment in the first direction increases an aggressiveness used by the multiple bitrate algorithm to increase the bitrate requested and the adjustment in the second direction decreases the aggressiveness used by the multiple bitrate algorithm to increase the bitrate requested.

Abstract: In one embodiment, a method determines first information from a component of a computing device to determine when receiving of one or more advertisements will affect an available bandwidth reading that is based on receiving of a media program. Then, the method dynamically disables a multiple bitrate algorithm based upon the first information such that a new bitrate version of the media program cannot be requested by the multiple bitrate algorithm for the media player. Second information is determined from the component of the computing device to determine when the available bandwidth reading will not be affected by receiving of the one or more advertisements. The method then dynamically enables the multiple bitrate algorithm based on the second information. The multiple bitrate algorithm is then allowed to request the different bitrate version of the media program based on the available bandwidth reading.

Abstract: The present invention relates to a video coding and decoding method, and coding and decoding apparatus. The coding method includes: generating a second order prediction flag for a coding block; when the coding block needs second order prediction, generating a second order prediction flag for at least one sub-block of the coding block, where the second order prediction flag of the sub-block is used to indicate whether second order prediction is performed on the sub-block; performing prediction according to the second order prediction flag of the coding block and the second order prediction flag of the at least one sub-block of the coding block to obtain a prediction image; and obtaining a prediction residual according to the prediction image, and coding the prediction residual.