Abstract: A pull-down lock, may include a top cover, wherein the bottom end of the top cover is fixedly connected with the pull rod, and the bottom end of the pull rod is fixedly connected with the lock head; besides, the lock bolt component for limiting and fixing the lock head is arranged in the movable part upper cover, and the movable part base is slidably inserted into the bottom end of the movable part upper cover; the movable part base is internally provided with the pull-down component which is adapted to and penetrates through the lock bolt component. When the movable part base is pulled to move downwards, the lock bolt component could be pushed to move under the cooperation of the pull-down component, so that the limiting and fixation of the lock head is released.

Abstract: A case for an electronic device includes: a side wall; a back wall; and a support member, which is ring shaped and is connected with the side wall or the back wall and capable of moving relative to the side wall or the back wall, so as to support the case. The support member is moveable between a folded position and an unfolded position. The support member includes a connecting section. The case further includes a connecting element configured to pivotably connect the support member to the side wall or the back wall, the connecting element includes a connecting portion stacked on the connecting section in a depth direction of the support member. One of the connecting section and the connecting portion defines at least two fixing holes, and the other one is provided with at least two positioning protrusions engaged in the fixing boles respectively in the depth direction.

Abstract: A power supply apparatus includes: a slide rail; a slider, where the slider is disposed on the slide rail, and the slider is configured to fasten a to-be-moved apparatus; a drag chain harness groove, where the drag chain harness groove is fastened to the slide rail; and a drag chain harness, where the drag chain harness is disposed in the drag chain harness groove, the drag chain harness includes a fastened end and a movable end, the fastened end is configured to electrically connect to a power supply, the fastened end is fastened relative to the drag chain harness groove, and the movable end is configured to electrically connect to the to-be-moved apparatus.

Abstract: The present disclosure provides an electronic device and method for wireless communication, and a computer readable storage medium. The electronic device comprises: a processing circuit, configured to estimate a first channel between a network node and an intelligent reflecting surface; pre-code, at least based on the estimated first channel, a plane wave signal sent by the network node, so that a channel model between the network node and a network terminal is equivalent to an orbital angular momentum channel model between the intelligent reflecting surface and the network terminal; and send the pre-coded plane wave signal.

Abstract: The present application relates to transcriptome sequencing and biomolecule space information detection. Specifically, the present application relates to a method for positioning and labeling a nucleic acid molecule, a method for constructing a nucleic acid molecule library for transcriptome sequencing, and a kit for implementing the method.

Abstract: A time synchronization method used for a time synchronization device is provided. The time synchronization device runs a plurality of Precision Time Protocol (PTP) instances to connect to a plurality of time synchronization domains through a plurality of ports. The time synchronization method includes selecting a grandmaster (GM) clock from the plurality of time synchronization domains; updating clock information of the grandmaster clock; determining whether each of the plurality of ports is a time receiving port or a time transmitting port according to the grandmaster clock; modifying clock attributes of each of the plurality of PTP instances according to whether the corresponding port is the time receiving port or the time transmitting port; and synchronizing, by the plurality of PTP instances, timings of the plurality of time synchronization domains according to the grandmaster clock.

Abstract: A system includes a controller configured to determine a machine-learning model comprising kernels among a plurality of machine-learning models based on a task to be performed by a vehicle, select one of a plurality of predictors based on a hardware device of the vehicle, each of the plurality of predictors predicting energy consumption of the kernels in corresponding hardware device, estimate, using the selected predictor, energy consumption of running the machine-learning model for performing the task on the hardware device of the vehicle, and estimate remaining range of the vehicle based on the estimated energy consumption, and information of the vehicle, and a route of the vehicle.

Abstract: The present disclosure provides a signal delay setting circuit, an isolation integrated circuit and a power conversion circuitry. The isolation integrated circuit includes a primary side circuit, an isolation circuit and a secondary side circuit. The primary side circuit generates a primary side signal according to a first input signal and a second input signal. The isolation circuit converts the primary side signal into a secondary side signal. The secondary side circuit receives the secondary side signal through the isolation circuit, to generate an output signal. The signal delay setting circuit is coupled to the secondary side circuit, calculates a delay time according to a voltage difference between an alternative terminal and a secondary side ground terminal of the isolation integrated circuit, and delays the secondary side signal according to the delay time, to control the duty ratio of the output signal.

Abstract: A PVD target structure is provided. The PVD target structure includes a target body having a first side and a second side opposite to the first side. The first side of the target body includes a first region and a second region surrounding the first region. The second region comprises a knurled profile. A method for preparing PVD target structure is also provided.

Abstract: An amplification circuit includes an amplifier, a first mirror-branch circuit, a second mirror-branch circuit, a first variable current source, a second variable current source, and an operation amplifier. The amplifier can receive an operation current and an input signal, and output the amplified input signal. The first mirror-branch circuit and the second mirror-branch circuit are coupled to the amplifier. The first variable current source is coupled to the first mirror-branch circuit and provides a first reference current. The second variable current source is coupled to the second mirror-branch circuit and provides a second reference current. The operation amplifier is coupled to the first mirror-branch circuit, the second mirror-branch circuit and the amplifier. The first reference current and the second reference current are related to the operation current.

Abstract: A method for rapid and safe construction and intelligent monitoring and controlling of continuous arch bridges, which using a single-arch rib construction method, when installing a new arch rib segment, the clasp cable is immediately extended, and then using an intelligent control cable to ensure that the pier and anchorage tower are in a balanced state. The newly installed segment is no longer in a cantilever state, and the loading on the flange is very small, resulting in a small change in the tension force for the clasp cables of the previous segments. The present invention saves more than half of the clasp cable usage, reduces the number of transverse movements of the cable crane system, and significantly shortens the construction period. The construction method which using intelligent control cables to balance the unbalance loading on the middle pier, could be applied to the construction of continuous arch bridges.

Abstract: A flip-flop with clock gating based on data comparison is disclosed. The flip-flop unit includes an edge-triggered flip-flop and a clock gating circuit. The clock gating circuit enables or disables a first clock signal to generate a second clock signal according to a data comparison result of input data and output data. The second clock signal provides a triggering edge of the edge-triggered flip-flop. The clock gating circuit copies the first clock signal as the second clock signal in a clock cycle during which the input data is flipped, and maintains the second clock signal at a predetermined level in clock cycles during which the input data remains unchanged. The flip-flop unit enables the clock flip of the edge-triggered flip-flop only in a clock cycle during which the input data is flipped, thereby improving the circuit performance and reducing the power consumption.

Abstract: A construction method for splicing prefabricated segmental bridges, includes the following steps: manufacturing prefabricated segments composed of pier-top segments and non-pier-top segments, with steel strands embedded in each, and non-pier-top segments further equipped with reserved holes; erecting the pier-top segments; lifting the corresponding non-pier-top segments and applying epoxy resin glue on the corresponding adhesive joint surface; threading the embedded steel strands from the previously erected prefabricated segment through the reserved holes of the non-pier-top segment about to be erected; completing the adhesion of the adhesive joint surface; tensioning the steel strands that have passed through the reserved holes before the adhesive joint surface epoxy resin glue sets; releasing the beam launching machinery; applying permanent prestress; injecting high-strength mortar into the corresponding reserved holes; repeating the previous steps until all prefabricated segments are assembled.

Abstract: The present application relates to a federated learning method and a first device, and a third device. The method includes: sending, by a first device, a first key to a second device, wherein the first key is configured to encrypt inference information of a second model in the second device to obtain first encrypted inference information; and obtaining, by the first device, target information based on inference information of a first model in the first device and second encrypted inference information corresponding to the first encrypted inference information, in response to receiving the second encrypted inference information.

Abstract: An EIS-based gas starvation fault diagnosis method for a fuel cell stack is disclosed. The method includes (S1) collecting, in real time, an impedance modulus at a first characteristic frequency of the fuel cell stack, (S2) comparing the impedance modulus to a modulus reference value, and (S3) determining whether an absolute value of a difference between the impedance modulus and the modulus reference value is greater than a first threshold, if yes, identifying that a gas starvation fault occurs to the fuel cell stack, and if no, returning to step (S1) to continuously collect the impedance modulus at the characteristic frequency of the fuel cell stack. The gas starvation fault diagnosis method is capable of quickly and reliably obtaining diagnostic results and is capable of differentiating between hydrogen starvation and air starvation through different parameters.

Abstract: Systems and methods include converting historical data into categorical time series data and de-noising the categorical time series data by removing noisy transitions sets according to a coefficient of variation. A likelihood of a category transition is determined based on historical events using a Hawkes process to generate a relationship graph. Relationships between pairs of nodes are determined using the relationship graph, where the relationships indicate a degree of correlation between the nodes based on de-noised categorical time-series data. An anomaly threshold is determined based on anomaly scores for a validation dataset using the relationship graph, wherein a likelihood output of the Hawkes process that exceeds the anomaly threshold indicates an anomaly.

Abstract: A rapid monitoring and discrimination method for drought conditions in summer maize based on chlorophyll content includes: 1) Obtaining multi-spectral imagery through UAV multi-payload low-altitude remote sensing technology and measuring chlorophyll content on the ground. Additionally, calculating vegetation indices including Normalized Difference Vegetation Index (NDVI), Soil-Adjusted Vegetation Index (SAVI), and Renormalized Difference Vegetation Index (RENDVI). 2) Selecting vegetation indices and constructing regression equations with measured chlorophyll content during different growth stages. The regression equation with the highest correlation for each growth stage is chosen as the optimal model equation for that particular stage. 3) Using the optimal model equations to retrieve chlorophyll content for each period and determining thresholds for chlorophyll content across different drought levels through calibration.

Abstract: In certain embodiments, a system and accompanying method to delay processing of streaming content by utilizing multi-queue technology is provided. In particular, the system receives, at a first function, a streaming record associated with an event. The first function places the streaming record into a delay queue with a delay timestamp according to the type of the event associated with the streaming record. Operation of a second function is triggered and the second function determines if a current time is greater than the delay for a delay timestamp for the streaming record. The second function requeues the streaming record into the delay queue if the current time is less than the delay. If the current time is greater than the delay, the second function places the streaming record into a ready queue for processing. The second function processes the streaming record in the ready queue.

Abstract: Provided herein are methods of detecting severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) in a sample. The methods include contacting the sample with a plurality of gold nanoparticles (AuNPs) and/or other plasmonic metal nanoparticles (MNPs) that are conjugated with at least two sets of antibodies, or antigen binding portions thereof, that binds to at least first and second epitopes of SARS-CoV-2 proteins, such as receptor-binding domain (RBDs) under conditions sufficient for the antibodies, or the antigen binding portions thereof, to bind to the first and second epitopes of the SARS-CoV-2 proteins in the sample to produce bound SARS-CoV-2 proteins. The methods also include detecting the SARS-CoV-2 proteins when aggregations of the bound SARS-CoV-2 proteins form with one another. Related compositions, reaction mixtures, devices, kits, and systems are also provided.

Abstract: An audio processing method includes: determining a target tuning parameter of a target tuning scene based on tuning parameters corresponding to preset tuning scenes, wherein the tuning parameters are obtained based on adjustment values obtained by mapping space sizes of the corresponding preset tuning scenes; and performing reverberation tuning on an input audio signal based on the target tuning parameter, to obtain a final reverberation audio signal of the target tuning scene. According to the embodiments of the present disclosure, for a target tuning scene required to be simulated, any audio processing parameter can be adjusted and controlled based on a corresponding space size, thereby realizing simulation of reverberation effects of target tuning scenes with different space sizes and further meeting more abundant and more flexible requirements for simulation of reverberation effects of virtual scenes.