Abstract: A metro rail corrugation measurement method based the Seq2Seq model and vibration and noise data fusion comprises the following steps: Constructing a time series data set corresponding to floor longitudinal acceleration and train speed based on historical data of metro trains; Constructing the metro train mileage matching prediction model based on the Seq2Seq model, training the metro train mileage matching prediction model by time series data sets, and inputting the inside floor longitudinal acceleration of the metro train to be detected into the trained metro train mileage matching prediction model to obtain the running speed of the metro train to be detected. According to the vibration and noise data of the metro train to be detected, the vibration and noise composite index of the rail corrugation is calculated to determine the wavelength and amplitude information corresponding to the rail corrugation.

Abstract: Implementations are described herein for leveraging private and public agricultural knowledge graphs to generate agricultural inferences for growers, automatically based on agricultural events and/or on demand. In various implementations, public data source(s) may be identified using a public agricultural knowledge graph. These public source(s) may contain public data usable to respond to an agricultural query seeking agricultural inference(s) about a subject agricultural field managed by an agricultural entity. Public data retrieved from the public data source(s) may be encoded into public embedding(s) and passed to a private computing system controlled by the agricultural entity. The private computing system may identify, using a private agricultural knowledge graph, private data source(s) containing private data that can respond to the agricultural query, and encode that private data into private embedding(s).

Abstract: A heat dissipation structure includes a housing configured to accommodate a heating element of an aerial vehicle. The housing includes a first air vent configured to guide an airflow into the housing and a second air vent configured to guide the airflow out of the housing. The airflow includes a propeller-generated airflow generated by a propeller of the aerial vehicle during rotation. The housing is located at an end of an arm of the aerial vehicle, away from the propeller in a longitudinal direction of the arm. A projection of the housing on a plane on which an area of rotation of the propeller lies at least partially overlaps the area of rotation of the propeller.

Abstract: A heat dissipation structure includes a housing configured to accommodate a heating element of an unmanned aerial vehicle (UAV). The housing includes a first air vent and a second air vent. The first air vent is configured to guide an airflow into the housing. The airflow includes a propeller-generated airflow generated by a propeller of the UAV during rotation. A side projection of the first air vent on a side of the housing at least partially overlaps a side projection of the propeller on the side of the housing. The second air vent is configured to guide the airflow out of the housing.

Abstract: Neural network (NN) model training techniques can include computing activations in a forward pass using a sparse weight matrix that is transpose invariant. The neural network (NN) model training techniques can further include computing activation gradients and weight gradients in a backward pass using the sparse weight matrix.

Abstract: Various embodiments of the present disclosure relate to a computer-implemented method, a system, and a storage medium, where a graph stored in a computing system is logically divided into subgraphs, the subgraphs are stored on different interconnected (or coupled) devices in the computing system, and nodes of the subgraphs include hub nodes connected to adjacent subgraphs. Each device stores attributes and node structure information of the hub nodes of the subgraphs into other devices, and software or hardware prefetch engine on the device prefetches attributes and node structure information associated with a sampled node. A prefetcher on a device interfacing with the interconnected (or coupled) devices may further prefetch attributes and node structure information of nodes of the subgraphs on other devices. A traffic monitor is provided on an interface device to monitor traffic. When the traffic is small, the interface device prefetches node attributes and node structure information.

Abstract: An antioxidant for use in treatment for a radiation-induced bystander effect to a transplanted cell in a host is provided. The antioxidant is N-acetyl-L-cysteine, sulforaphane or resveratrol, or a combination thereof. The RIBE on transplanted human hematopoietic cells impaired the long-term hematopoietic reconstitution of human HSCs as well as the colony-forming ability of HPCs, and the RIBE-affected human hematopoietic cells showed enhanced DNA damage responses, cell cycle arrest and p53-dependent apoptosis, mainly due to oxidative stress. Taken together, these findings suggest that RIBE impairs human HSCs by oxidative DNA damage. The present disclosure provides definitive evidence for RIBE in transplanted human HSCs and further justifies the necessity for conducting clinical trials to assess the ability of multiple antioxidants to improve the efficacy of HSC transplantation for patients with hematological or non-hematological disorders.

Abstract: A rotational speed sensor, a manufacturing method thereof, a driving method thereof, and an electronic device are provided. The rotational speed sensor includes liquid crystal cell, rotational speed sensing module and rotational speed determining module; rotational speed sensing module is configured to convert rotational speed into voltage signal and apply voltage signal to liquid crystal cell; and at least a part of optical signal propagation module of rotational speed determining module is located in liquid crystal cell.

Abstract: Various embodiments of the present disclosure relate to a computer-implemented method, a system, and a storage medium, where a graph stored in a computing system is logically divided into subgraphs, the subgraphs are stored on different interconnected (or coupled) devices in the computing system, and nodes of the subgraphs include hub nodes connected to adjacent subgraphs. Each device stores attributes and node structure information of the hub nodes of the subgraphs into other devices, and software or hardware prefetch engine on the device prefetches attributes and node structure information associated with a sampled node. A prefetcher on a device interfacing with the interconnected (or coupled) devices may further prefetch attributes and node structure information of nodes of the subgraphs on other devices. A traffic monitor is provided on an interface device to monitor traffic. When the traffic is small, the interface device prefetches node attributes and node structure information.

Abstract: This disclosure discloses a light-emitting diode chip, a method for fabricating the same, a backlight module, and a display device. The light-emitting diode chip includes: a transparent base substrate; at least one light-emitting diode located on one side of the base substrate; and a dimming structure located on a side of the base substrate away from the light-emitting diode, wherein the light-emitting diode is configured to emit light from double sides thereof; and the dimming structure is configured to adjust the intensity of light emitted from the side of the base substrate away from the light-emitting diode.

Abstract: This disclosure provides a computation unit, a related apparatus, and a method. The computation unit includes: a weight buffer adapted to store a row vector fetched from an M×K? sparsified weight matrix, where M and K are respectively a number of rows and a number of columns of the weight matrix before being sparsified, and ? is a sparsity coefficient; an excitation buffer adapted to store a K×N excitation matrix; an index selector adapted to store a selection index corresponding to the row vector, and select a row of the excitation matrix based on the selection index, to obtain a K?×N selected excitation matrix; and a dot product computation unit adapted to multiply the row vector by the selected excitation matrix. This disclosure implements a manner of running a DNN on hardware. In such a manner, structured sparsity of a DNN can be fully utilized, so that inference efficiency is improved; moreover, a register file occupies relatively small bandwidth, and a timing constraint is weak.

Abstract: A UAV includes a camera assembly, a heat generating device, and a heat dissipation structure including a housing, a heat dissipation device, and heat dissipation fan for providing an air flow into the housing. The housing receives the heat generating device and includes a first air inlet and a first air outlet. The heat dissipation device includes heat dissipation fins disposed in parallel. The first air inlet and the camera assembly are located at a same side of the housing. The camera assembly is disposed at a front portion of the housing. A heat dissipation air channel formed between two adjacent heat dissipation fins includes a second air inlet and a second air outlet that is connected with the first air outlet. The heat dissipation fan includes a third air inlet connected with the first air inlet and a third air outlet connected with the second air inlet.

Abstract: A heat dissipation structure includes a housing configured to receive a heat generating device. The housing includes a first air inlet, a first air outlet, and an alloy heat dissipation device disposed in the housing and including heat dissipation fins disposed in parallel. A heat dissipation air channel is formed between two adjacent heat dissipation fins. The heat dissipation air channel includes a second air inlet and a second air outlet, the second air outlet being connected with the first air outlet. The heat dissipation structure further includes a heat dissipation fan configured to provide a heat dissipation air flow to an inside space of the housing. The heat dissipation fan is disposed inside the housing, and includes a third air inlet and a third air outlet. The third air inlet is connected with the first air inlet and the third air outlet is connected with the second air inlet.

Abstract: The disclosure discloses an acceleration sensor, where the acceleration sensor comprises: a housing, and a mass block in the housing and connected with the housing via at least two hanging beams, where an auxiliary buffer component is further provided between the mass block and a bottom surface of the housing, and an elastic coefficient of the auxiliary buffer component decreases as force applied thereon increases.

Abstract: A method for manufacturing a micro light-emitting diode array substrate is disclosed. The method includes: providing a drive substrate comprising a plurality of sub-pixel regions, the plurality of sub-pixel regions being configured for bearing micro light-emitting diodes of different colors, and epitaxial layers of the micro light-emitting diodes of different colors having different thicknesses; providing a base substrate, forming a plurality of micro light-emitting diodes on the base substrate, and transferring micro light-emitting diodes of same color on the base substrate as a whole onto the drive substrate; repeating the transferring process in a sequence that the thicknesses of the epitaxial layers of the micro light-emitting diodes gradually increase, until each sub-pixel region in pixel units is provided with one of the micro light-emitting diodes having same color as the each sub-pixel region.

Abstract: The present application provides a fingerprint sensor. The fingerprint sensor includes an array of a plurality of optical fibers. Each of the plurality of optical fibers has a first end and second end opposite to the first end. Each of the plurality of optical fibers is configured to allow an incident light to enter into the second end and an exit light to exit from the second end. Each of the plurality of optical fibers includes a fiber core; a fiber Bragg grating in the fiber core; and a reflective film on the first end.

Abstract: A heat dissipation structure includes a housing configured to accommodate a heating element of an unmanned aerial vehicle (UAV). The housing includes a first air vent and a second air vent. The first air vent is configured to guide an airflow into the housing. The airflow includes a propeller-generated airflow generated by a propeller of the UAV during rotation. A side projection of the first air vent on a side of the housing at least partially overlaps a side projection of the propeller on the side of the housing. The second air vent is configured to guide the airflow out of the housing.

Abstract: The present application provides a fingerprint sensor. The fingerprint sensor includes an array of a plurality of optical fibers. Each of the plurality of optical fibers has a first end and second end opposite to the first end. Each of the plurality of optical fibers is configured to allow an incident light to enter into the second end and an exit light to exit from the second end. Each of the plurality of optical fibers includes a fiber core; a fiber Bragg grating in the fiber core; and a reflective film on the first end.

Abstract: A method for manufacturing a micro light-emitting diode array substrate is disclosed. The method includes: providing a drive substrate comprising a plurality of sub-pixel regions, the plurality of sub-pixel regions being configured for bearing micro light-emitting diodes of different colors, and epitaxial layers of the micro light-emitting diodes of different colors having different thicknesses; providing a base substrate, forming a plurality of micro light-emitting diodes on the base substrate, and transferring micro light-emitting diodes of same color on the base substrate as a whole onto the drive substrate; repeating the transferring process in a sequence that the thicknesses of the epitaxial layers of the micro light-emitting diodes gradually increase, until each sub-pixel region in pixel units is provided with one of the micro light-emitting diodes having same color as the each sub-pixel region.