Abstract: A system and method for determining a channel property assumption (CPA) for signal reception are disclosed herein. In an embodiment, a method performed by a communication device includes: associating each of multiple signals with at least one associated CPA, wherein the multiple signals are at least partially overlapped in a time domain; selecting at least one CPA based on a selection rule, the at least one selected CPA is selected from a set of CPAs, and the set of CPAs includes the at least one associated CPA associated with each of the multiple signals; and receiving at least one signal of the multiple signals from a communication node based on the at least one selected CPA.

Abstract: A device for simulating gas intrusion and bullheading in a wellbore under different inclinations is provided, which includes a wellbore outer pipe with an inner pipe and an LED light source therein. An outer wall of the wellbore outer pipe is provided with one or more inlets. A bubble generator is arranged outside a lower plug, and extends through the lower plug via an air inlet needle into the inner cavity of the wellbore outer pipe. An input end of the bubble generator is connected to an air compressor. A lower outlet of the wellbore outer pipe is connected to an inlet of a formation unit through a pipeline and a back pressure valve. A simulating method using such device is also provided.

Abstract: A circuit board structure and a display device, the circuit board structure includes a first circuit board, a second circuit board, a filling portion and an electromagnetic shield layer. The second circuit board has a thickness greater than that of the first circuit board. At least one corner portion forms at a joint of the first circuit board and the second circuit board. A connection line forms at a joint of the second circuit board and the first circuit board. The connection line is located at the corner portion. The filling portion fills the corner portion, an extending direction of the filling portion is identical to an extending direction of the corner portion. The extending direction is identical to a direction of the connection line. A thickness of a cross section of the filling portion perpendicular to the extending direction increases as a distance from the second circuit board decreases.

Abstract: The invention discloses a blockchain-based intrusion detection system for railway signal, which is built on a blockchain's distributed chain structure, without a central, trusted control center. This design mitigates the vulnerabilities associated with centralized intrusion detection centers. Additionally, by utilizing a blockchain-based distributed structure, it also eliminates the risk of a single point of failure for the intrusion detection center. Moreover, the data within the blockchain-based intrusion detection system is highly resistant to malicious tampering. This is achieved by leveraging the consensus mechanism inherent in the blockchain, which can achieve consensus among intrusion detection nodes. The current invention solves the internal evil attacks and avoid the inability to reach consensus between nodes due to internal evil, thereby affecting the intrusion detection performance; at the same time, the intrusion detection model can resist external network attacks.

Abstract: A flexible support plate is configured to support a display panel, and is provided with a bendable region. The bendable region has at least one boundary line extending in a first direction, and the boundary line is part of a side of the flexible support plate. A plurality of hollows are arranged at intervals in the bendable region, the plurality of hollows are divided into a plurality of hollow groups arranged in the first direction, and each hollow group includes at least one hollow. For any boundary line, any one of the plurality of hollow groups has one boundary point, the boundary point is disposed on a contour line of a hollow in the hollow group to which the boundary point belongs, and the boundary point has a smallest distance from a corresponding boundary line in the contour line to which the boundary point belongs.

Abstract: The disclosed concepts relate to pretraining of machine learning models. One example method involves performing separate optimization of a first machine learning model and a second machine learning model. The first machine learning model can be optimized based at least on first predictions and the second machine learning model can be optimized based at least on second predictions. The first predictions can represent predictions of masked values in first sequences of values values, and the second predictions can represent whether or not the first values were replaced with different values predicted by the first machine learning model.

Abstract: A near eye display system includes a display block, a shift block and a controller. The display block includes a display panel and one or more optical elements that direct light beams generated by the display panel to an image receiver to perceive an image displayed by the display panel as a virtual image. The shift block applies a spatial pixel shift adjustment to the virtual image. The controller provides a first image to the display block with a first spatial pixel shift adjustment, and provides a second image to the display block with a second spatial pixel shift adjustment. The first spatial pixel shift adjustment causes the first image being perceived as a first virtual image at first pixel locations, the second spatial pixel shift adjustment causes the second image being perceived as a second virtual image at second pixel locations that are shifted from the first pixel locations.

Abstract: Provided are an information element processing method and apparatus. The method includes: in the case where a time interval between control information for scheduling a first-type information element and the first-type information element is less than a predetermined threshold and a predetermined condition is satisfied, acquiring quasi co-location information of the first-type information element according to quasi co-location information of a second-type information element; or in the case where a time interval between control information for scheduling a first-type information element and the first-type information element is less than a predetermined threshold and a predetermined condition is not satisfied, processing the first-type information element in a predetermined processing manner. Further provided are a quasi co-location information acquisition method and apparatus, an information determination method and apparatus, and a storage medium.

Abstract: Methods, apparatus and systems for improving scheduling flexibility in a wireless communication are disclosed. In one embodiment, a method performed by a wireless communication node is disclosed. The method includes: generating at least one indicator configured for updating scheduling information for a first transmission with a semi-persistent scheduling, the scheduling information including information related to at least one of: a sounding reference signal resource indicator, a transmission configuration indicator, and a timing advance; and transmitting the at least one indicator to at least one wireless communication device.

Abstract: Methods and apparatus for generating user-aware eye models. During an enrollment process, images of a user's eye are captured by one or more cameras when the eye is in two or more different orientations and at two or more different levels of display brightness. The captured images are processed to generate a 3-dimensional, user-aware eye model, for example a model of at least the eye's cornea and pupil features. The generated user-aware eye model may be used in other processes, for example in a gaze tracking process. The enrollment process may be an iterative process to optimize the eye model, or a continuous process performed while the user is using the system.

Abstract: The present disclosure provides a display substrate, a manufacturing method of the display substrate and a display apparatus. The display substrate includes a base substrate; an alignment layer, on the base substrate; a first electrode, located between the base substrate and the alignment layer and being in contact with the alignment layer; and a pattern layer, located between the base substrate and the alignment layer and being in contact with the alignment layer. An orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the first electrode on the base substrate, and a ratio of a contact angle of the pattern layer to a contact angle of the first electrode is greater than or equal to 7/12 and less than 3/2.

Abstract: Provided are channel configuration and power control methods and devices, a user equipment, a base station and storage mediums. The channel configuration method is configured to receive a second channel characteristic assumption of a control channel resource set configured by a second communication node; where the control channel resource set is formed by at least one of a first type of search space and a second type of search space; the second channel characteristic assumption is used for configuration of control channel resources in the second type of search space; and the control channel resource transmitted by the second communication node are received according to the second channel characteristic assumption.

Abstract: A hand-held band saw includes a band saw body and an supporting device. The supporting device includes a fixing member, a slider, a supporting member, and a connection assembly. The fixing member is fixedly connected to the band saw body, the slider is slidably connected to the fixing member, the supporting member supports a workpiece and is connected to the slider, and the connection assembly connectes the slider and the supporting member. When the slider moves, the connection assembly is capable of enabling the supporting member to move along with the slider. The connection assembly comprises a buffer member mounted between the slider and the supporting member.

Abstract: Systems and methods are provided for vehicular assisted hierarchical federated learning using a vehicle-to-edge server association scheme that reduces statistical heterogeneity in hierarchical federated learning networks. According to some embodiments, the methods and systems comprise obtaining system conditions of a vehicle based on joining a hierarchical federated learning network, exchanging data between the vehicle and edge servers of the hierarchical federated learning network according to a vehicle-to-edge server association protocol that is based on the vehicular system conditions, and identifying a model for the vehicle from models hosted on the edge servers. Embodiments disclosed herein also include at least one of: training the identified model at the vehicle to produce a locally trained model, and applying data acquired by the vehicle to the identified model to perform a task.

Abstract: Provided are a light-emitting device and a manufacturing method thereof, a display panel and a display device. The light-emitting device includes a plurality of light-emitting units including a first, a second, and a third light-emitting unit. Each light-emitting unit includes a micro-cavity structure including an anode, a hole transport layer, a functional layer, and a cathode. The functional layer of the first light-emitting unit includes a first light-emitting layer, a first buffer layer between the first light-emitting layer and the hole transport layer of the first light-emitting unit, and a second buffer layer between the first buffer layer and the first light-emitting layer. The material of the second buffer layer is different from that of the first buffer layer, the second buffer layer has a physical thickness less than or equal to 30 nanometers and an optical thickness less than or equal to 60 nanometers.

Abstract: A numerical experimental method for urban waterlogging includes the following steps: acquiring raw data of an urban underlying surface; batch-processing urban waterlogging modeling data; batch-running urban waterlogging numerical experimental models; batch-processing urban waterlogging numerical experimental results; and displaying and analyzing the batch-processed urban waterlogging numerical experimental results. The numerical experimental method constructs a numerical experimental process, which can perform an unlimited number of repeated experiments in the numerical simulation process of urban waterlogging and achieve batch-running of data preprocessing, model operation, and data post-processing processes. Therefore, the numerical experimental method has the advantages of high efficiency, high convenience, high reliability, and low cost.

Abstract: Provided are an ionizable lipid compound with an adjacent cis-double bond structure, a preparation method therefor, and the use thereof in the delivery of an active therapeutic agent (e.g., a nucleic acid). The ionizable lipid compound can provide a higher encapsulation rate of active substances and a better cell or in vivo transfection rate, and is particularly suitable for preparing nanoparticles with a solid structure.

Abstract: Provided is a risk assessment method for power transmission line windage yaw flashover. The method includes determining the influence factors of power transmission line windage yaw flashover and setting risk assessment indexes according to the influence factors (S101); generating the standard cloud of the risk assessment indexes according to the incident occurrence probabilities and the consequence levels of the risk assessment indexes (S103); scoring the influence factors according to the risk assessment indexes and generating the risk cloud of the risk assessment indexes according to scoring results (S105); and performing a two-dimensional similarity calculation on the risk cloud and the standard cloud to obtain two-dimensional similarity between the risk cloud and the standard cloud and determining the risk level of the power transmission line windage yaw flashover according to the two-dimensional similarity (S107).

Abstract: A light emitting substrate includes: a first base substrate, a plurality of light emitting devices located on the first base substrate, wherein the light emitting devices include a first light emitting device, a second light emitting device and a third light emitting device, each of the light emitting devices includes a first electrode layer, a light emitting functional layer and a second electrode layer which are stacked, the light emitting functional layer includes an emitting layer including a first emitting layer in the first light emitting device, a second emitting layer in the second light emitting device and a third emitting layer in the third light emitting device; the material of the first emitting layer is different from the material of the second emitting layer, and the material of the first emitting layer is different from the material of the third emitting layer.

Abstract: The present disclosure relates to placement path optimization methods of a surface mount machine and in particular to a placement path optimization method of a surface mount machine based on row-column grouping genetic algorithm. The method includes the following steps: 1. obtaining production parameters and data; 2. grouping placement points into matrix rows based on rows; 3. encoding chromosomes to generate a chromosome population; 4. decoding chromosomes to obtain column grouping results for placement points and calculating placement path lengths; 5. setting parameters and loop conditions for the genetic algorithm; 6. updating optimization results based on crossover operators; 7. updating optimization results based on mutation operators; outputting the optimal placement path. This invention falls within the realm of electrical technology and electrical engineering.