Abstract: The present disclosure discloses a preparation method of an aluminum nitride (AlN) composite structure based on a two-dimensional (2D) crystal transition layer. The preparation method of the present disclosure includes: transferring the 2D crystal transition layer on a first periodic groove of an epitaxial substrate; forming a second periodic groove staggered with the first periodic groove on the 2D crystal transition layer; depositing a supporting protective layer; depositing a functional layer of a required AlN-based material; and removing the 2D crystal transition layer through thermal oxidation to obtain a semi-suspended AlN composite structure. The preparation method of the present disclosure has low difficulty and is suitable for large-scale industrial production.

Abstract: Techniques are disclosed relating to filtering messages. A computer system may detect an occurrence of an event of a particular type. The computer system may determine whether to enqueue, in a message queue, a message that identifies a set of tasks to be performed in relation to the event. The determination may be based on a response received from a cache that stores a subset of filter rules of a filter rules table. Based on the response indicating a cache miss, the computer system may enqueue the message in the message queue. A process that processes the message may be operable to resolve the cache miss by 1) accessing a filter rule from the filter rules table that indicates whether messages for events of the particular type should be enqueued in the message queue and 2) updating the cache to store the filter rule.

Abstract: The present invention provides a joint optimization method and system for delay and spectrum occupation in a cloud-edge collaborative network. The method includes: initializing a cloud-edge collaborative network, and generating a set of user requests; establishing a target function of minimum average end-to-end delay and minimum spectrum slot occupation of a user request; during processing of each user request based on the target function, sequentially determining whether a node and path selection uniqueness constraint, a mobile edge computing (MEC) server load constraint, a spectrum resource occupation and uniqueness constraint, a spectrum continuity constraint, and a spectrum consistency constraint are satisfied, where if all constraints are satisfied, the user request is successfully processed, and the process turns to step S4; or if any constraint is not satisfied, the user request fails to be processed; and calculating average end-to-end delay and spectrum resource occupancy of the user request.

Abstract: A blockchain-enhanced open Internet of Things (IoT) access architecture includes an access point, a number of IoT devices, a hash access mechanism, a blockchain mining network, and a blockchain enabling mechanism that manages network access of the IoT device. The blockchain-enhanced open IoT access architecture provided in the present invention provides a secure, reliable, fair, and short-packet access service for a plurality of devices in an IoT network by using features of a blockchain such as distributed storage, tamper-proofing, and traceability, thereby promoting the trust and cooperation between the devices and ensuring the security and efficiency of the network in the large-scale untrustworthy IoT network. The blockchain-enhanced open IoT access architecture in the present invention can provide secure and reliable IoT access with low latency and a high value in practice.

Abstract: Disclosed in the embodiments of the present application are a method and apparatus for group management, an electronic device, and a storage medium. A specific embodiment of the method includes: presenting, in a first interface, a first control configured to perform a management setting for a first group, where the first interface is an interface other than an interface of the first group; and completing a corresponding group management setting for the first group in response to an operation for the first control in the first interface.

Abstract: Disclosed is an eddy current flaw detection system based on a NV (nitrogen-vacancy) color center quantum sensing technology, relating to the technical field of quantum sensing. The system includes a laser transceiver processing unit, a quantum sensor, an excitation coil, a power supply unit, a microwave coil, and a microwave unit. The diamond NV color center precision measurement technology and the eddy current nondestructive flaw detection technology are combined in accordance with the present disclosure. Compared with the traditional technology, the remarkable performance of the diamond NV color center can improve the accuracy of eddy current nondestructive flaw detection and achieve the accurate detection of fine crack defects. Meanwhile, a detection method for an alternating current magnetic field is designed according to the characteristics of the eddy current nondestructive flaw detection.

Abstract: Disclosed is an unmanned aerial vehicle (UAV)-aided over-the-air computing system based on full-duplex relay and a trajectory and power optimization method thereof. The UAV-aided over-the-air computing system adopts the UAV as a full-duplex relay for data fusing and forwarding. The method of the application aims at minimizing an average mean square error of over-the-air computing, and solves an optimization problem under constraints of sensor transmitting power, information transmission rate, UAV trajectory and denoising factor. For an overall joint optimization problem, each optimization variable is determined one by one by an alternative optimization method according to the high coupling of optimization variables.

Abstract: An iron-based metal powder for ultra-high-speed laser cladding comprising chemical composition and mass percentage of the metal powder of: C 0.6˜1.0%, Cr 17.0˜20.0%, Ni 5.0˜6.5%, Mn 2.0˜4.0%, Mo 1.0˜1.5%, Ti 4.0˜6.0%, B 1.0˜1.5%, N 0.08˜0.15%, Si?0.5%, P?0.030%, S?0.030%, balance of Fe and unavoidable impurities, wherein the particle size of the metal powder is 15˜65 ?m, the fluidity is 16˜20 s/50 g.

Abstract: In a method, in response to an interface a computer-implemented analysis assistant initiates a presentation of inefficiency results, determined an efficiency analyzer based on a mapping of a dataflow program to execute on hardware of a computing system. The assistant receives an inefficiency included among the inefficiency results and composes formatted inefficiency results comprising a presentation format of the inefficiency to assist a developer of the dataflow program to interpret the inefficiency. The analysis assistant outputs the formatted inefficiency results to an interface, which can comprise an interface to output the formatted inefficiency results for use by the developer to improve the dataflow program in association with the inefficiency. In implementations the presentation can comprise an interactive presentation with a developer of the dataflow program. A computer program product and a computing system can implement the method.

Abstract: A liquid crystal display panel includes: a first base, a second base disposed opposite to the first base, a liquid crystal layer and a first optical compensation layer that are disposed between the first base and the second base, and a second optical compensation layer disposed on a side of the first base away from the liquid crystal layer or on a side of the second base away from the liquid crystal layer. An orthogonal projection of an optic axis of the first optical compensation layer on the first base is parallel to orthogonal projections of optic axes of liquid crystal molecules in the liquid crystal layer on the first base. An orthogonal projection of an optic axis of the second optical compensation layer on the first base is perpendicular to the orthogonal projection of the optic axis of the first optical compensation layer on the first base.

Abstract: The present disclosure describes a high-throughput methodology for rapid and highly personalized screenings to identify efficacious anti-tumor immunotherapy regiments. In one embodiment, therapeutic agents or a combination thereof are screened by co-culturing tumor shaped organoid extrudates with a population of immune cells taken from the same patient. Reduced tumor cell functions or increased immune cell functions in the presence of the therapeutic agents or combination thereof would identify the therapeutic agents or combination thereof for treating the tumor in the patient.

Abstract: In a method a computer-implemented efficiency analyzer selects operators from an intermediate representation of a dataflow program. The operators are included in a mapping of the operators to hardware of a computing system to execute the dataflow program. Based on the mapping and a description of the hardware, the efficiency analyzer computes an execution metric associated with executing the operators on the hardware. Based on the execution metric and hardware description, the efficiency analyzer determines an inefficiency metric, and based on the inefficiency metric, the efficiency analyzer determines an inefficiency associated with the dataflow program. The computing system to execute the dataflow program can comprise a coarse grain computing system and the hardware can include a reconfigurable processor of the computing system. A computer program product and a computing system to a the dataflow program can implement the method.

Abstract: A foldable display device and a flexible display assembly are provided. The foldable display device includes a casing frame, a flexible display module arranged on the casing frame, and a pull-back device; the casing frame includes a first frame body and a second frame body hinged with the first frame body, and a hinged portion between the first and second frame bodies corresponds to a bending area of the flexible display module; a support plate is arranged on one side of the flexible display module facing away from a display side, the support plate is arranged close to a first end of the flexible display module and is slidably connected to the second frame body, and a portion of the flexible display module close to a second end is fixed on the first frame body; the pull-back device is arranged between the support plate and the second frame body.

Abstract: Provided is a packaging structure for packaging a display device, the packaging structure comprising: at least one composite film layer, wherein the composite film layer comprises an inorganic pattern and an organic pattern, the inorganic pattern comprises a plurality of curved structures arranged at intervals, the organic pattern comprises a first organic sub-pattern, and the first organic sub-pattern and the inorganic pattern are located in a same layer and are complementary in position; and wherein an orthographic projection of the composite film layer onto the display device at least covers a display area of the display device. A display substrate, a display apparatus, and a method for packaging a display device are also provided.

Abstract: A method of predicting bone fracture risk in a type 2 diabetes (“T2D”) patient includes: obtaining a plurality of averaged glycated hemoglobin (“HbA1c”) values for a plurality of T2D subjects over an observational period; binning the plurality of averaged HbA1c values into two predetermined categories; obtaining a plurality of total fracture incidences for the plurality of T2D subjects over a follow-up period; performing a plurality of linear regression model correlations between the binned HbA1c values and the plurality of total fracture incidences to determine a bone fracture rate prediction model; obtaining a measurement of an HbA1c value of the T2D patient; and analyzing the HbA1c value of the T2D patient with the bone fracture rate prediction model to determine the T2D patient's risk of bone fracture for a future period.

Abstract: The present application discloses a memory device, a programming method and a memory system. The memory device comprises: a memory cell array comprising a plurality of word lines and a plurality of bit lines; each of the word lines comprising at least two word line segments; each of the word line segment in the word line having different signal transmission distances from a word line driver; different word line segments in the word line corresponding to different bit lines respectively; the word line driver configured to apply a word line voltage to the word line; a bit line driver configured to apply different bias voltages to different bit lines corresponding to the different word line segments respectively during application of a programming pulse.

Abstract: The present disclosure relates to unimolecular core-shell nanoparticle, nanoclusters thereof, and platelet biomimetic nanoclusters thereof. The disclosed compositions are useful for treating a subject with a disease or condition, such as a cardiovascular disease. In a further aspect, the cardiovascular disease can be a vascular stenosis or restenosis. Also described herein are methods of making and using the unimolecular core-shell nanoparticle, nanoclusters thereof, and platelet biomimetic nanoclusters thereof. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Abstract: Techniques are disclosed relating to filtering messages. A computer system may detect an occurrence of an event of a particular type. The computer system may determine whether to enqueue, in a message queue, a message that identifies a set of tasks to be performed in relation to the event. The determination may be based on a response received from a cache that stores a subset of filter rules of a filter rules table. Based on the response indicating a cache miss, the computer system may enqueue the message in the message queue. A process that processes the message may be operable to resolve the cache miss by 1) accessing a filter rule from the filter rules table that indicates whether messages for events of the particular type should be enqueued in the message queue and 2) updating the cache to store the filter rule.

Abstract: Methods, computer readable media, and devices for dynamically identifying and associating disparate records are disclosed. One method may include receiving a first set of association criteria, identifying a first source object and a first target object based on the first set of association criteria, creating a first association object indicating an association between the first source object and the first target object, storing the first association object, receiving a second set of association criteria, identifying a second source object and a second target object based on the second set of association criteria, and creating a second association object.

Abstract: Disclosed is a relay selection method for unmanned aerial vehicles in post disaster emergency scenarios in underground space, comprising the following steps: collecting a maximum rate, a minimum rate and an average rate of data transmission assisted by a D2D user through an unmanned aerial vehicle (UAV) based on a prediction range of the D2D user for the UAV, and obtaining a first uncertain preference order of the D2D user for the UAV and a second uncertain preference order of the UAV for the D2D user; obtaining a preference strategy of the D2D user for the UAV based on the first uncertain preference order and the second uncertain preference order; and exchanging and matching the UAVs matched by any two D2D users based on the many-to-one bilateral matching model, so as to obtain a stable matching result of bilateral exchange.