Abstract: A multimedia content pushing method and an apparatus, a computer device, and a storage medium are provided. The method includes: obtaining historical operation information of alternative users on a target multimedia content in a target historical time period and real-time operation information on the target multimedia content; determining a target sample user from the alternative users based on the historical operation information and the real-time operation information, and training a neural network model based on sample data composed of sample attribute information corresponding to the target sample user and multimedia attribute information of the target multimedia content to obtain a target neural network model, and in response to a target user of the first type triggering a preset push event, using the target neural network model to determine a push strategy, and pushing the target multimedia content based on the push strategy.

Abstract: This application relates to a method and a device for fitting a spectrum in an off-axis integrated cavity disturbed by radio frequency noise. The method includes: setting a single mode output light field of a laser; obtaining a maximum cutoff frequency and a power spectral density of radio frequency white noise generated by a radio frequency noise source, and converting a disturbance of the radio frequency white noise in electricity to a phase disturbance of the light field to obtain a converted power spectral density; determining a laser power spectrum according to the set light field, and the maximum cutoff frequency and the converted power spectral density of the radio frequency white noise; obtaining a length and a cavity mirror reflectivity of an off-axis integrated cavity system, and an initial light intensity and a real-time light intensity when the off-axis integrated cavity system runs; and constructing a forward fitting model.

Abstract: A bionic intervertebral disc with mechanical anisotropy includes an upper end plate, a core and a lower end plate. The core includes outer fibrous rings, a middle transition zone and an inner nucleus pulposus. The fibrous rings comprise collagen fiber sheets and collagen fibers, each of the collagen fibers is attached to a surface of a corresponding one of the collagen fiber sheets and arranged at an inclination angle, ones of the collagen fibers which are on every two adjacent layers of the collagen fiber sheets are arranged crosswise with each other. A honeycomb meshing size of a portion, which is located at a fibrous-ring transition zone, of the honeycomb structure is smaller and more compact, and a honeycomb meshing size of a portion, which is located at a nucleus pulposus transition zone, of the honeycomb structure is larger and sparser.

Abstract: A multimedia content pushing method and an apparatus, a computer device, and a storage medium are provided. The method includes: obtaining historical operation information of alternative users on a target multimedia content in a target historical time period and real-time operation information on the target multimedia content; determining a target sample user from the alternative users based on the historical operation information and the real-time operation information, and training a neural network model based on sample data composed of sample attribute information corresponding to the target sample user and multimedia attribute information of the target multimedia content to obtain a target neural network model, and in response to a target user of the first type triggering a preset push event, using the target neural network model to determine a push strategy, and pushing the target multimedia content based on the push strategy.

Abstract: A separated prosthetic foot with a transverse arch belongs to the technical field of manufacturing of artificial limbs. The characteristics of the transverse arch of the human foot are combined into the previous transverse-straight carbon fiber foot design to improve the stiffness of the prosthetic foot and reduce the weight of the prosthetic foot. A forefoot part employs a separated curved plate design, and two simple curved plates with different curvatures are used for simulating a complex curved surface of the transverse arch of the human, such that the manufacturing cost is reduced, and the various parts of the sole are non-uniform in stiffness distribution: the outer side of the foot is a single-layer forefoot plate with a smaller curvature and minor stiffness; and the inner side of the foot is a double-layer stacked forefoot plate, and the lower layer plate has a large radius in curvature and stiffness.

Abstract: A bionic intervertebral disc with mechanical anisotropy includes an upper end plate, a core and a lower end plate. The core includes outer fibrous rings, a middle transition zone and an inner nucleus pulposus. The fibrous rings comprise collagen fiber sheets and collagen fibers, each of the collagen fibers is attached to a surface of a corresponding one of the collagen fiber sheets and arranged at an inclination angle, ones of the collagen fibers which are on every two adjacent layers of the collagen fiber sheets are arranged crosswise with each other. A honeycomb meshing size of a portion, which is located at a fibrous-ring transition zone, of the honeycomb structure is smaller and more compact, and a honeycomb meshing size of a portion, which is located at a nucleus pulposus transition zone, of the honeycomb structure is larger and sparser.

Abstract: Disclosed is a multi-layered composite bionic self-retaining prosthesis for a femoral shaft, including a scaffold, an upper bone plate, and a lower bone plate. An upper outer side of the scaffold is fixed to a low inner side of the upper bone plate, and a lower outer side of the scaffold is fixed to an upper inner side of the lower bone plate. The scaffold includes an upper trabeculae layer, a middle cortical bone layer and a lower trabeculae layer. The middle cortical bone layer is a multi-layered composite structure which includes an outer frame layer, a middle filling layer and an inner frame layer. The upper and lower bone plates each include an inner trabeculae layer and an outer reinforcement layer.

Abstract: A small-size multi-axis ankle joint prosthesis is provided. Two ends of each of four springs are fixedly connected with two spring seats at an upper part and at the lower part respectively. The joint axes are positioned in a space surrounded by the lower part, the four springs and the upper part. Front and rear perforated blocks in the joint axes are respectively in bolted connection with a fifth arc hole pair g and a sixth arc hole pair h of a second arc plate in the upper part. Left and right perforated blocks in the joint axes are respectively in bolted connection with a second arc hole pair e and a third arc hole pair f of the first arc plate in the lower part.

Abstract: A separated prosthetic foot with a transverse arch belongs to the technical field of manufacturing of artificial limbs. The characteristics of the transverse arch of the human foot are combined into the previous transverse-straight carbon fiber foot design to improve the stiffness of the prosthetic foot and reduce the weight of the prosthetic foot. A forefoot part employs a separated curved plate design, and two simple curved plates with different curvatures are used for simulating a complex curved surface of the transverse arch of the human, such that the manufacturing cost is reduced, and the various parts of the sole are non-uniform in stiffness distribution: the outer side of the foot is a single-layer forefoot plate with a smaller curvature and minor stiffness; and the inner side of the foot is a double-layer stacked forefoot plate, and the lower layer plate has a large radius in curvature and stiffness.

Abstract: The present invention provides a method for improving transformation efficiency of a plant. The method according to the present invention comprises the use of a nucleic acid encoding the amino acid sequence set forth in SEQ ID NO: 2 or 4, or a nucleic acid encoding a polypeptide comprising an amino acid sequence having at least 85% identity with the amino acid sequence set forth in SEQ ID NO: 2 or 4, and having a function of improving transformation efficiency of a plant.

Abstract: The present invention provides a method for improving transformation efficiency of a plant. The method according to the present invention comprises the use of a nucleic acid encoding the amino acid sequence set forth in SEQ ID NO: 2 or 4, or a nucleic acid encoding a polypeptide comprising an amino acid sequence having at least 85% identity with the amino acid sequence set forth in SEQ ID NO: 2 or 4, and having a function of improving transformation efficiency of a plant.