Abstract: The present disclosure relates to a fuel cell technology, and in particular, to a method and a system for analyzing hydrogen refueling action of a fuel cell vehicle based on a big data platform. By extracting a structural design parameter set of a hydrogen system of a fuel cell vehicle and a driving data set of the fuel cell vehicle in a preset time period, and further analyzing the obtained hydrogen refueling action data, it calculates a first hydrogen refueling feature set and a second hydrogen refueling feature set of the fuel cell vehicle and finally obtain hydrogen refueling action features corresponding to driving of the fuel cell vehicle in a preset time period.

Abstract: Provided in the present application are a trajectory query method and apparatus. The trajectory query method comprises: acquiring a trajectory query request, which comprises query information of a plurality of types; according to query information of a service type in the query information of the plurality of types, determining a query range of metadata used as a digest of a trajectory, then determining a plurality of pieces of candidate metadata that are within the query range, and determining, from the plurality of pieces of candidate metadata, target metadata that matches the query information of the plurality of types; and acquiring a target trajectory according to the target metadata. By means of the present application, the trajectory query speed can be increased.

Abstract: A machine learning power consumption model and process are provided for determining power consumption of computing environment resources in handling requests of an application. The process includes training the machine learning power consumption model to estimate power consumption of computing environment resources in handling requests. The training uses a training dataset derived from historical request-related data, and the training dataset includes request-related data and resource power consumption data. In addition, the process includes analyzing the requests. The analyzing includes, for a particular request of the requests, obtaining a common pattern of resource use and collecting real-time trace metrics to facilitate allocating resource use to the particular request.

Abstract: A display panel includes a plurality of sub-panels tiled in sequence along a first direction. The sub-panels have a first edge and a second edge in the first direction. The sub-panels include a column of first pixels closest to the first edge, a column of second pixels closest to the second edge, and a plurality of columns of third pixels between the column of first pixels and the column of second pixels. A sum of a distance between effective display bodies in the first pixels and the first edge and a distance between effective display bodies in the second pixels and the second edge is smaller than a spacing between effective display bodies in two adjacent columns of the third pixels.

Abstract: Provided herein is a synthesis for omecamtiv mecarbil dihydrochloride hydrate and various intermediates.

Abstract: A display panel and a display device are provided. An organic light-emitting layer includes a doped region and an undoped region, and the undoped region is located between the doped region and the hole blocking layer. When the display panel is in a low grayscale display state, an exciton concentration distribution curve of the organic light-emitting layer includes a first peak located in the doped region and a second peak located in the undoped region, and a peak value of the second peak is less than a peak value of the first peak.

Abstract: Provided are a Rho kinase inhibitor, a method for preparing same and the uses thereof. The Rho kinase inhibitor designates a compound of Formula I, a stereoisomer thereof or pharmaceutically acceptable salt thereof. The Rho kinase inhibitor promotes endothelial cells and endothelin expression, prostenin expression, and vascular factors NO synthesis and secretion, has a promoting effect on proprostin expression independently of the doses used, shows lower toxicity, while being safer.

Abstract: The present disclosure discloses a method and system for evaluating collision testing of a bottom of a battery pack and a device.

Abstract: Embodiments provide a method for geomagnetically detecting a submarine cable, including: performing a preliminary detection by controlling an underwater robot equipped with a proton magnetometer; determining a preliminary direction and location of the cable based on preliminary detection information; controlling the underwater robot equipped with the proton magnetometer and two fluxgate magnetometers to launch into the water; controlling the underwater robot to travel over the cable and determining specific location information of the cable; controlling a heading of the underwater robot to move along the preliminary direction of the cable; and controlling the underwater robot equipped with the proton magnetometer and the two fluxgate magnetometers to launch into the water; determining whether a fault in the submarine cable occurs and a location of a fault point, based on Z-axis components of the general geomagnetic field and launching depth data of the underwater robot.

Abstract: This application discloses a service packet forwarding method and related apparatus. In the service packet forwarding method, when receiving a packet sent by any second virtual resource module connected to a first service function forwarder (SFF), the first SFF dynamically determines a forwarding path of the packet based on configuration information of a second virtual resource module for implementing a second service function, to achieve dynamic load balancing on the packet instead of relying on a service function chain ingress node to perform load balancing, so as to reduce pressure on the service function chain ingress node.

Abstract: A low-altitude frequency domain electromagnetic detection device and an electromagnetic detection method are disclosed. A transmitting wireframe, a receiving wireframe I, a transmitting and receiving system and a receiving wireframe II of the detection device are connected with supporting rods at intervals, and the supporting rods are connected with an unmanned aerial vehicle. A sine wave generation module of the transmitting and receiving system is connected with the transmitting wireframe, the receiving wireframes I and II are connected with a dual-channel synchronous data acquisition module, and the dual-channel synchronous data acquisition module is connected with a main control module. The main control module controls the sine wave generation module, receives data of an altimeter, a GNSS module and the dual-channel synchronous data acquisition module and records the data in a storage module.

Abstract: Disclosed are a method and an apparatus for optimizing and testing a harness layout of a battery swapping electrical interface. The method includes: obtaining a first distance, a second distance and initial floating data of the battery swapping electrical interface; adjusting the first distance and the second distance to obtain first floating data of the battery swapping electrical interface again; repeatedly inserting or pulling the plug into or out of the socket of the battery swapping electrical interface; obtaining second floating data of the battery swapping electrical interface after repeatedly inserting or pulling the plug into or out of the socket for a preset number of times; and determining the current first distance and second distance as optimal distances if it is judged that the second floating data is in the second index interval.

Abstract: A short-wave infrared detector unit device and a preparation method therefor are provided, which belongs to the technical field of infrared detectors. A photonic crystal structure layer with multi-coupled topological defects is arranged on a surface of an absorption layer. The photonic crystal structure layer with multi-coupled topological defects is a third dielectric material layer with a through-hole structure. The third dielectric material layer is provided with first through holes in periodic arrangement and second through holes in periodic arrangement. The first through holes are filled with a first dielectric material, and the second through holes are filled with a second dielectric material.

Abstract: Disclosed are a method and a device for detecting inconsistency of single cells in vehicle battery, and a medium. The method includes obtaining current battery data for a vehicle under test, determining whether the current battery data corresponds to a charging or discharging condition, and separately evaluating the presence of inconsistency in cells under each condition. This enables distinct detection for charging and discharging conditions, thereby enhancing detection accuracy.

Abstract: A composite measurement system for measuring nanometer displacement is provided. The system includes: a light source, a polarization beam splitting prism, a first phase change module, a second phase change module, a first right-angle prism, a second right-angle prism, a non-polarization beam splitting prism, a scalar interference light collection module, a vector interference light collection module and a displacement calculation module. In the present disclosure, a photodetector is configured to collect an intensity of scalar interference light of the object to be measured being moved, to obtain a periodic light intensity change curve; a CCD camera is configured to collect images of interference vortex light of the object being moved; and the displacement calculation unit is configured to calculate a displacement of the object according to integer periods of the light intensity change curve and angles of image changes of the interference vortex light.

Abstract: The present disclosure provides a momentum-matching and band-alignment van der Waals (vdW) infrared photodetector and a fabrication method thereof. The photodetector includes a substrate, a dielectric layer, a Bi2O2Se layer, a black phosphorus (BP) layer, a metal source and a metal drain. The fabrication method includes: transferring, in a wet manner, the Bi2O2Se layer grown on the mica substrate onto the substrate having the dielectric layer, transferring the mechanically exfoliated BP layer through a micro-region fixed-point transfer device onto the Bi2O2Se layer, and separately fabricating the metal source and the metal drain on the Bi2O2Se layer and the BP layer by processes such as electron beam exposure and electron beam evaporation, thereby forming the momentum-matching and band-alignment vdW infrared photodetector having a vertical structure.

Abstract: In computer methods and systems for operating a database management system using a catalog table collection module each table in the database management system is cataloged. Multiple tables are automatically dispatched into multiple consistency groups by collecting real-time statistics using a real time statistics module. Workload profile data of the database management system is generated using a workload profile collection module, and an optimized multiple consistency group definition for the database management system is generated using a transaction splitting analysis module.