Abstract: A system for determining the performance of a video codec for real-time communication applications includes a video codec performance evaluation network model and video codec quality analyze. A set of network conditions is used to simulate certain typical real-world network conditions. A coded video stream is transmitted from the transmitting end to the receiving end under these conditions. The end-to-end latency and received video fluency are measured along with a set of existing video quality measures by a video codec performance evaluation system including a network model and a video codec quality analyzer. The decodable frame ratio, latency and video fluency are used as the performance metrics for real-time communication video quality evaluation. The video codec performance evaluation system does not send any video data over a network when it determines the real-time communication quality of the video codec.

Abstract: A weeding robot and a method and apparatus for planning a weeding path for the weeding robot and a medium are provided. The method for planning a weeding path for the weeding robot includes the following steps: acquiring an image segmentation model based on neural network model training, where the image segmentation model is configured to identify and segment a weed target feature, a soil target feature and a crop target feature; and based on the weed target feature, acquiring the weed target feature by intra-camera tracking, and acquiring the weed target feature by inter-camera tracking, and planning a weeding path for a weeding robotic arm of the weeding robot, to enable the weeding robotic arm to weed according to the weeding path.

Abstract: The present disclosure relates to systems and methods for providing vector-wise sparsity in neural networks. In some embodiments, an exemplary method for providing vector-wise sparsity in a neural network, comprises: dividing a matrix associated with the neural network into a plurality of vectors; selecting a first subset of non-zero elements from the plurality of vectors to form a pruned matrix; and outputting the pruned matrix for executing the neural network using the pruned matrix.

Abstract: Embodiments of the present disclosure provide a circuit component, an electronic device and a driving method. The circuit component includes: an input end and at least one signal channel end, wherein the input end is configured to receive an ith image signal at a first frequency, and i is a positive integer. The circuit component includes a logic control circuit, configured to generate an ith drive control signal based on the ith image signal and repeatedly send the ith drive control signal at a second frequency, wherein the ith drive control signal is configured to control a current flowing through the at least one signal channel end.

Abstract: An image file obtaining method includes: determining a first value of each of N tasks in program source code, where the first value is first duration required for executing each of the N tasks or the first value is a ratio of the first duration to second duration, the second duration is duration required for loading each of the N tasks, and N is a positive integer; sorting the N tasks in descending order of the first values; and linking the sorted N tasks to obtain an image file. After downloading the image file, an embedded apparatus successively loads and executes the sorted N tasks, thereby shortening a startup time period of the embedded apparatus.

Abstract: A method for determining a longitudinal position of a combined phantom, a computer readable storage medium, and a CT device. The method includes: scanning the combined phantom to obtain a topogram thereof. The combined phantom is fixed to a table top, protrudes beyond the table top, is axially parallel to the longitudinal direction, and includes a plurality of phantoms, one of which is a slice phantom. The method further includes identifying the plurality of phantoms on the topogram, and using an axial center of the slice phantom as the longitudinal position of the combined phantom. The longitudinal position is determined by using the topogram of the combined phantom, and a phantom position is aligned automatically.

Abstract: A pet feeder is provided. The pet feeder includes a food container, a food exit passage, and a food tray. A first end of the food exit passage is in communication with the food container. The food tray is in communication with a second end of the food exit passage. A downwardly inclined guide portion is arranged on the food tray. The downwardly inclined guide portion extends away from a shell assembly and is connected to a feeding trough.

Abstract: A pet feeder is provided. The pet feeder includes a food container, a food exit passage, and a food tray. A first end of the food exit passage is in communication with the food container. The food tray is in communication with a second end of the food exit passage. A downwardly inclined guide portion is arranged on the food tray. The downwardly inclined guide portion extends away from a shell assembly and is connected to a feeding trough.

Abstract: A system and method for determining the performance of a video codec for real-time communication applications. A set of network conditions is used to simulate certain typical real-world network conditions. A coded video stream is transmitted from the transmitting end to the receiving end under these conditions. The end-to-end latency and received video fluency are measured along with a set of existing video quality measures by a video codec performance evaluation system including a network model and a video codec quality analyzer. The decodable frame ratio, latency and video fluency are used as the performance metrics for real-time communication video quality evaluation. The video codec performance evaluation system does not send any video data over a network when it determines the real-time communication quality of the video codec.

Abstract: A cat litter box includes a shell assembly, a rotary drum, and a driving assembly. The shell assembly includes a top shell, a middle shell, and a bottom shell arranged in sequence in a vertical direction. An excrement collection compartment is arranged inside the bottom shell. The excrement collection compartment is arranged opposite to the middle shell. The top shell is detachably connected to the middle shell. The middle shell is detachably connected to the bottom shell. A mounting cavity is formed between the top shell and the middle shell. The rotary drum is rotatably arranged in the mounting cavity. The driving assembly is detachably connected to the middle shell, and includes a driving unit. The driving unit is drivingly connected to the rotary drum.

Abstract: A display panel and a driving method thereof, and a display device. The display panel includes a substrate and a plurality of pixel circuits arranged in an array on the substrate, each of the plurality of pixel circuits includes a pixel driving chip and at least one light-emitting element electrically connected to the pixel driving chip, and the pixel driving chip is configured to receive and store a data signal and drive the at least one light-emitting element to emit light according to the data signal.

Abstract: A method for smelting low-phosphorus high-manganese steel based on reduction dephosphorization of ferromanganese is provided in the present application, relating to the technical field of high-manganese steel smelting, where the dephosphorization of ferromanganese is carried out under reducing atmosphere conditions through mediate-frequency induction furnace to obtain molten ferromanganese with lower phosphorus content, which is subsequently mixed with low phosphorus molten steel obtained by smelting in oxidative period of electric arc furnace in LF ladle refining furnace to make the Mn content of steel reach the requirement of high-manganese steel, and smelting is carried out under the condition of reducing atmosphere by adjusting the composition and temperature of the molten steel to meet the requirements of the target composition of the steel grade before tapping the steel.

Abstract: The present disclosure provides a headphone including a sound production component and an ear hook. The ear hook and the sound production component form a first projection on a user's sagittal plane. In a non-wearing state, an inner contour, a first end contour, a second end contour of the first projection, and a tangent segment connecting the first end contour and the second end contour jointly define a first closed curve. A first area of the first closed curve ranges 300 mm2-500 mm2. A portion of the inner contour corresponding to the ear hook includes a first curve. The first curve has an extremum point in a first direction perpendicular to a long axis direction of a projection of the sound production component, the extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane.

Abstract: A cat litter box includes a shell assembly, a rotary drum, and a driving assembly. The shell assembly includes a top shell, a middle shell, and a bottom shell arranged in sequence in a vertical direction. An excrement collection compartment is arranged inside the bottom shell. The excrement collection compartment is arranged opposite to the middle shell. The top shell is detachably connected to the middle shell. The middle shell is detachably connected to the bottom shell. A mounting cavity is formed between the top shell and the middle shell. The rotary drum is rotatably arranged in the mounting cavity. The driving assembly is detachably connected to the middle shell, and includes a driving unit. The driving unit is drivingly connected to the rotary drum.

Abstract: A weeding robot and a method and apparatus for planning a weeding path for the weeding robot and a medium are provided. The method for planning a weeding path for the weeding robot includes the following steps: acquiring an image segmentation model based on neural network model training, where the image segmentation model is configured to identify and segment a weed target feature, a soil target feature and a crop target feature; and based on the weed target feature, acquiring the weed target feature by intra-camera tracking, and acquiring the weed target feature by inter-camera tracking, and planning a weeding path for a weeding robotic arm of the weeding robot, to enable the weeding robotic arm to weed according to the weeding path.

Abstract: A display panel driving method includes: obtaining a target grayscale value of each pixel unit in picture data of a frame to be displayed; determining, based on the target grayscale value of the pixel unit in the picture data of the frame to be displayed, a target pixel unit row that needs luminance compensation in the frame to be displayed; and if a display panel is driven to display a picture of the frame to be displayed, when a non-target pixel unit row is scanned, outputting, through scanning lines corresponding to the non-target pixel unit row, scanning signals with turn-on voltages each equal to a first turn-on voltage; and when a target pixel unit row is scanned, outputting, through scanning lines corresponding to the target pixel unit row, scanning signals with turn-on voltages higher than the first turn-on voltage.

Abstract: Provided is a composite material that shows a low specific dielectric constant, and that hardly causes an appearance failure or changes in characteristics when exposed to, for example, a treatment liquid to be used in the production of an electronic circuit board. Specifically, a plate-like composite material including polytetrafluoroethylene and a predetermined filler, and satisfying a predetermined condition serves as a composite material that shows a low specific dielectric constant, and that hardly causes an appearance failure or changes in characteristics even when exposed to, for example, a treatment liquid to be used in the production of an electronic circuit board.

Abstract: A time-of-flight depth calculation method includes: obtaining a phase image, and obtaining, based on the phase image, a differential ratio of charge signals corresponding to reflected signals acquired by an image sensor at different times; in response to that the differential ratio of the charge signals is greater than or equal to a threshold, obtaining a first phase based on a phase conversion model and the differential ratio of the charge signals; and calculating a depth value of a target region based on the first phase.

Abstract: A navigation path determining method and apparatus, a device, a storage medium, and a program product are provided. A navigation grid map is obtained corresponding to an application. The navigation grid map is marked with a primary region and a secondary region. A passage level of the primary region allows passage of virtual objects under volume levels. The secondary region includes a plurality of sub-secondary regions at different passage levels. The passage levels of the sub-secondary regions correspond to different maximum volume levels. At least one guide grid corresponding to the target grid is obtained for a target grid corresponding to a target virtual object. The target grid is located in the secondary region. Based on the guide grid, a navigation path of the target virtual object between the target grid and the primary region is determined. The present subject matter can ensure non-clipping of virtual objects.

Abstract: Provided is a pixel circuit, a display panel, and a display device. The pixel circuit includes a light-emitting unit, a drive unit, and a control unit. A first light-emitting element and a second light-emitting element of the light-emitting unit are electrically connected with the control unit simultaneously. The drive unit is configured to send a data signal to the light-emitting unit to drive the same to emit light.