Abstract: The present disclosure provides a method and apparatus for uploading and acquiring features of wireless signals. The method for acquiring features is applied to a service end and includes: acquiring a signal feature set of wireless signals detected by a delivery party in an execution process of at least one delivery service, where delivered objects corresponding to the at least one delivery service are from a same pick-up place; identifying a target feature subset corresponding to an object pick-up stage in the signal feature set, wherein the object pick-up stage is a stage of the execution process after the delivery party arrives at the pick-up place and before the delivery party leaves the pick-up place; based on the target feature subset, determining signal features of wireless signals corresponding to the pick-up place.

Abstract: A structural flame retardant high strength low exothermic polymer grouting material for consolidating, belonging to a technical field of polyurethane material, is produced by combined the polyether polyol and the modified isocyanate in a weight ratio of 100:(100-160), leading to internal reaction temperature ?100° C., strength ?60 mPa, bonding ?3 mPa, oxygen index ?28% while no halogen and no effect on water quality, odor level (80° C.) ?3.5, and fog test ?5 mg (which means no physical additive flame retardant is diffused into the environment). In particular, with no halogen, which is known as environmental hormones, in the plasticizers, there will be less combustion smoke, wherein the present invention will not release corrosive or irritating hydrogen halide gas, nor produce toxic carcinogens polybrominated benzoxins and polybrominated dibenzofurans, thereby avoiding the long-term impact of the material on the environment.

Abstract: A large-load unmanned aerial vehicle (UAV) for plant protection with adjustable spraying swath and pesticide application amount is provided, relating to the technical field of pesticide application of unmanned aerial vehicles. The large-load unmanned aerial vehicle for plant protection comprises a large-load unmanned aerial vehicle, a pesticide box, a variable pesticide application system, and adjustable spraying swath mechanisms, wherein the pesticide box is fixed to landing gears of the unmanned aerial vehicle and is positioned below a control platform of the unmanned aerial vehicle; the adjustable spraying swath mechanisms are arranged on the landing gears, the variable pesticide application system is connected with the pesticide box and the adjustable spraying swath mechanisms, the variable pesticide application system and the adjustable spraying swath mechanisms are electrically connected with the control platform, and the control platform is in communication connection with a remote control handle.

Abstract: Provided herein is a method of preparing a ceramic material, the method including: providing a ceramic gel including a plurality of metal salts and compressing the ceramic gel thereby inducing stress-induced mineralization of the ceramic gel and formation of the ceramic material, wherein the ceramic gel exists in isolated form.

Abstract: An energy efficiency optimization method for an IRS-assisted NOMA THz network comprises: classifying users into BS users and IRS users; defining a channel model for the BS users and a channel model for the IRS users; calculating a BS user rate and an IRS user rate respectively, and calculating a total rate of a system; proposing an optimization problem for downlink power control and IRS phase shift adjustment; and solving the optimization problem through an MADRL method. The invention puts forward an energy efficiency concept and adopts an MADRL method to maximize the overall energy efficiency of the system under the constraints of minimum rate and maximum power of each user.

Abstract: A space-air-ground integrated UAV-assisted IoT data collection method based on AoI comprises: constructing a UAV-assisted space-air-ground integrated IoT system, constructing a UAV channel model and an AoI model, establishing an AoI-based UAV-assisted space-air-ground integrated IoT data collection model, transforming a problem into a Markov problem, introducing a neural network to solve a high-dimensional state problem, introducing a deep reinforcement learning algorithm to train UAVs to find optimal collection points, and introducing a matching theory to match the UAVs and IoT devices.

Abstract: The invention discloses a manufacturing process of a display screen cover, and a display screen. The manufacturing process includes the following steps: S1, providing a lamp panel provided with LED lamp beads; S2, arranging a glue barrier; S3, filling the hollow region of the glue barrier with glue I, and covering the LED lamp beads with the glue I; S4, providing a press plate; S5, curing the glue I; and S6, removing the press plate and the glue barrier. The cover does not need to be additionally assembled on the lamp panel, so that the lamp beads are protected against damage from the cover, and the yield of display screens is increased; and gaps between the lamp beads are completely filled with the cover, so that the lamp beads are fully protected.

Abstract: Provided herein is a method of preparing a ceramic material, the method including: providing a ceramic gel including a plurality of metal salts and compressing the ceramic gel thereby inducing stress-induced mineralization of the ceramic gel and formation of the ceramic material, wherein the ceramic gel exists in isolated form.

Abstract: A method for scheduling a computational task is proposed. The method includes receiving, at a server, a request for executing a computational task from a client device. The method further includes forwarding the computational task to a processing device if a predetermined condition is fulfilled. The predetermined condition can be based on an execution time or on a security level of data of the computational task, for example.

Abstract: The invention discloses a manufacturing process of a display screen cover, and a display screen. The manufacturing process includes the following steps: S1, providing a lamp panel provided with LED lamp beads; S2, arranging a glue barrier; S3, filling the hollow region of the glue barrier with glue I, and covering the LED lamp beads with the glue I; S4, providing a press plate; S5, curing the glue I; and S6, removing the press plate and the glue barrier. The cover does not need to be additionally assembled on the lamp panel, so that the lamp beads are protected against damage from the cover, and the yield of display screens is increased; and gaps between the lamp beads are completely filled with the cover, so that the lamp beads are fully protected.

Abstract: Based on the structural features of KIR full genomic sequences, the distribution of single nucleotide polymorphisms in their coding regions and the length of flanking intronic sequence of each exon, a method for high-throughput simultaneous sequence-based typing of all the 14 functional killer cell immunoglobulin-like receptor (KIR) genes is disclosed including: developing a scientific and reasonable polymerase chain reaction (PCR) amplification strategy; simultaneously amplifying the complete coding sequence of each functional KIR gene using 3˜5 pairs of KIR gene-specific PCR primers that have similar annealing temperature; and determining the nucleotide sequences of the exons carried by each PCR amplicon in both directions using the forward and reverse sequencing primers, respectively, as shown in FIG. 1.

Abstract: A method for scheduling a computational task is proposed. The method includes receiving, at a server, a request for executing a computational task from a client device. The method further includes forwarding the computational task to a processing device if a predetermined condition is fulfilled. The predetermined condition can be based on an execution time or on a security level of data of the computational task, for example.

Abstract: Based on the structural features of KIR full genomic sequences, the distribution of single nucleotide polymorphisms in their coding regions and the length of flanking intronic sequence of each exon, a method for high-throughput simultaneous sequence-based typing of all the 14 functional killer cell immunoglobulin-like receptor (KIR) genes is disclosed including: developing a scientific and reasonable polymerase chain reaction (PCR) amplification strategy; simultaneously amplifying the complete coding sequence of each functional KIR gene using 3˜5 pairs of KIR gene-specific PCR primers that have similar annealing temperature; and determining the nucleotide sequences of the exons carried by each PCR amplicon in both directions using the forward and reverse sequencing primers, respectively, as shown in FIG. 1.

Abstract: A method and an apparatus for coordinating multiple power line networks are provided. The method includes: obtaining, by a central coordinator of a first power line network of multiple power line networks, signaling timeslot information of a second power line network; and determining, according to the signaling timeslot information, whether a predetermined signaling timeslot of the first power line network conflicts with a signaling timeslot of the second power line network, and if the predetermined signaling timeslot conflicts with the signaling timeslot of the second power line network, determining, according to a predetermined backoff rule, a contention-free timeslot as a signaling timeslot of the first power line network. Signaling timeslots of different networks can be staggered as sequential as possible, which ensures non-confliction of the signaling timeslots, thereby avoiding signal interference and attenuation in a shared network.

Abstract: A method and an apparatus for coordinating multiple power line networks are provided. The method includes: obtaining, by a central coordinator of a first power line network of multiple power line networks, signaling timeslot information of a second power line network; and determining, according to the signaling timeslot information, whether a predetermined signaling timeslot of the first power line network conflicts with a signaling timeslot of the second power line network, and if the predetermined signaling timeslot conflicts with the signaling timeslot of the second power line network, determining, according to a predetermined backoff rule, a contention-free timeslot as a signaling timeslot of the first power line network. Signaling timeslots of different networks can be staggered as sequential as possible, which ensures non-confliction of the signaling timeslots, thereby avoiding signal interference and attenuation in a shared network.

Abstract: A facility agricultural laser measure and control motor rotary tillage flattening machine includes a front axle part, a lifting equipment, a rotary tillage component, a battery pack, a rear axle steering part, a rotary flattening component and a rack. A front axle housing connects with the rack. The rotary tillage component comprises a DC motor, a gearbox and a rotary tillage blade. The DC motor connects with the gearbox through transmission. An output shaft of the gearbox connects with the rotary tillage blade. The rear axle steering part includes a rotary seat, a rotary shaft, a steering handlebar, a rear axle stand and squirrel-cage hubs. An upper end of the rotary shaft is equipped with a steering handlebar. The rear axle stand is equipped with two squirrel-cage hubs through a supporting axle. The rotary flattening component connects with the rack through an electromotive handspike and a flexible torsion bar.

Abstract: A facility agricultural laser measure and control motor rotary tillage flattening machine includes a front axle part, a lifting equipment, a rotary tillage component, a battery pack, a rear axle steering part, a rotary flattening component and a rack. A front axle housing with the rack. The rotary tillage component comprises a DC motor, a gearbox and a rotary tillage blade. The DC motor connects with the gearbox through transmission. An output shaft of the gearbox connects with the rotary tillage blade. The rear axle steering part includes a rotary seat, a rotary shaft, a steering handlebar, a rear axle stand and squirrel-cage hubs. An upper end of the rotary shaft is equipped with a steering handlebar. The rear axle stand is equipped with two squirrel-cage hubs through a supporting axle. The rotary flattening component connects with the rack through an electromotive handspike and a flexible torsion bar.

Abstract: Embodiments of the present technical solution relate to the technique field of storage, and disclose a server and a method for the server to access a volume. The method comprises: determining, from a first list, a block that needs to be accessed according to an access offset of a volume that needs to be accessed; determining, from a second list, a storage controller corresponding to the block that needs to be accessed according to the determined block; and sending a data reading request or a data writing request to the storage controller corresponding to the block that needs to be accessed to process. Embodiments of the present invention can reduce time delay when the data reading request or the data writing request of the server reaches the block that needs to be accessed.