Abstract: A method of wireless communication includes grouping, by a network device, rate matching resources into a plurality of first groups for communication with a wireless terminal and transmitting a channel control indicator identifying at least a first group from the plurality of first groups of rate matching resources. In various embodiments, the rate matching resources include one or more of a rate matching pattern comprising multiple time-frequency transmission resources, a periodic zero power channel state information reference signal (ZP CSI-RS) resource set, an aperiodic ZP CSI-RS resource set, a semi-persistent ZP CSI-RS resource set, a long-term evolution cell specific reference signal (LTE CRS) resource, or a rate matching pattern group.

Abstract: Provided are an information determination method and apparatus, a signal reception method and apparatus and a signal transmission method and apparatus. The information determination method includes determining quasi-co-location reference signal information about an aperiodic measurement reference signal resource according to at least one of a relationship between a first threshold and a time interval, whether an intersection is null, or a time offset or a predetermined rule.

Abstract: A wireless communication method includes determining at least one Sounding Reference Signal (SRS) resource set configured by a BS, each SRS resource set comprises at least one SRS resource; and transmitting, to the BS, an uplink transmission based on the at least one SRS resource set.

Abstract: A polar navigation window period assessment system based on three-dimensional visualization simulation of ship-ice interaction is provided in the present application, including a virtual reality interactive operation module for interacting with virtual reality scenes based on a virtual reality (VR) handle and a VR helmet; a three-dimensional virtual visualization integration module for observing the virtual reality scenes from a global perspective; a three-dimensional simulation module of the Arctic route environment for simulating a route environment scene; an Arctic navigation virtual scene module for establishing a navigation virtual scene; an Arctic navigation window period assessment module for assessing navigation window periods of the ship on different routes; a system storing and outputting module for storing interactive operation information, virtual reality scene information and window period assessment result information, and outputting them in form of curve diagrams and data tables.

Abstract: A fish school detection method and a system thereof, an electronic device and a storage medium are provided, the method includes inputting a to-be-detected fish school image into a fish school detection model; the fish school detection model including a feature extraction layer, a feature fusion layer and a feature recognition layer; extracting feature information of the to-be-detected fish school image based on the feature extraction layer, and determining a fish school feature map and an attention feature map based on an attention mechanism; fusing the fish school feature map and the attention feature map based on the feature fusion layer to determine a target fusion feature map; and determining a target fish school detection result based on the feature recognition layer and the target fusion feature map. Interference from environmental factors on detection results is eliminated, so as to effectively improve accuracy of the fish detection.

Abstract: Disclosed are a biomarkers composition related to diagnosis and prognosis of immunoglobulin A nephropathy (IgAN) and application thereof, belonging to the field of biomedicine. The biomarkers composition includes at least one of cytokines of FCAR, MBL and MMP-9. It is found after screening and analysis that FCAR, MBL and MMP-9 are associated with the diagnosis of IgAN, especially with severe IgAN. With protein microarray, patients of mild IgAN and severe IgAN, and healthy people are distinguished with high specificity and sensitivity according to the present disclosure.

Abstract: A method includes receiving wireless fingerprint data identifying multiple locations within a specified area and, for each location, one or more signal strength values associated with wireless signals received from one or more of multiple wireless transmitters. The wireless fingerprint data is missing signal strength values for one or more transmitters at one or more specific locations. The method also includes generating a training dataset by adding filler signal strength values in place of at least some missing values. The method further includes training a machine learning model using the training dataset. The model is trained to receive a specified location as input and generate predicted signal strength values as outputs. In addition, the method includes using the trained model to generate additional signal strength values. At least some additional signal strength values are to be used in place of at least a portion of the missing values.

Abstract: A method includes emitting a sound by a first device. The method also includes receiving a recorded sound at the first device, where the recorded sound includes a recording of the emitted sound by a second device. The method further includes determining an intermediate frequency (IF) signal based on the emitted sound and the recorded sound. The method also includes determining a distance between the first device and the second device based on a frequency of the IF signal and one or more characteristics of the emitted sound. In addition, the method includes presenting the determined distance.

Abstract: A method of DNA fragmentation is provided. The method comprising incubating a semi-solid biological sample which comprises the DNA with an auxiliary domain-directed nuclease having a binding affinity and selectivity to pre-defined sites in the DNA so as to yield a DNA fragment-of-interest, to thereby fragment the DNA.

Abstract: A method and a system measure interfering influences on a checkweighing device. In the method, external interference data are obtained, as are interference data from the checkweighing device itself and interference data from an object being weighed, by calculating or mapping the weighing error data in the stationary state, in the operating state, and in the weighing state. The system for measuring the interference uses a meter and a processing apparatus. The meter and the processing apparatus perform an interference measurement and a compensation method. The amount of interference in the checkweighing device in each state and the amount of influence of the interference on the weighing performance is obtained, thereby facilitating the production, debugging, maintenance, and use of a checkweighing device.

Abstract: A method for preparing a high viscosity index poly-?-olefin subjects ?-olefin to a polymerization reaction in the presence of a metallocene catalyst to obtain a poly-?-olefin. The polymerization reaction is carried out in the absence of a solvent, and the metallocene catalyst is formed of, or is formed by interaction between, a metallocene compound and an activator.

Abstract: A metallocene compound having a structure shown by formula (I). A functional group connected to a bridging atom of the metallocene compound is an amine-substituted group and/or a metallocene-substituted group and/or a substituted metallocene group. A metallocene catalyst containing the metallocene compound has high catalytic activity, and can synthesize metallocene polypropylene having high isotacticity.

Abstract: Provided is a method for replicating a mirror nucleic acid, comprising: reacting a mirror nucleic acid template, a mirror nucleic acid primer and mirror dNTPs/rNTPs in the presence of a mirror nucleic acid polymerase, so as to obtain the mirror nucleic acid.

Abstract: Provided is a method for replicating a mirror nucleic acid, comprising: reacting a mirror nucleic acid template, a mirror nucleic acid primer and mirror dNTPs/rNTPs in the presence of a mirror nucleic acid polymerase, so as to obtain the mirror nucleic acid.

Abstract: A method for processing live broadcast information, an electronic device and a storage medium are provided, and relates to the technical field of information flow. The method includes: in response to detecting a first event before receiving a playing instruction for a first live broadcast room, acquiring a first playing frame of the first live broadcast room during a live broadcast process of the first live broadcast room; generating preloaded first kernel data according to the first playing frame; in response to receiving the playing instruction for the first live broadcast room, pulling a live broadcast video stream of the first live broadcast room according to the first kernel data; and playing the live broadcast video stream of the first live broadcast room. The live broadcast lag can be reduced and the user experience can be improved.

Abstract: A method for recognizing a face from monitoring video data is disclosed. Two neural networks are used to compare and score high-dimensional face features of a face, and a K-neighbor algorithm and a screening mechanism with a Euclidean distance as a threshold are combined for face comparison recognition to obtain an accurate face recognition result. In addition, the present disclosure also performs further screening based on the time of video data and the frequency of face appearance, and finally obtains a recognition result, thereby obtaining a more accurate face recognition result. The present disclosure can perform relatively accurate face recognition on video data or picture data captured by a real-time or historical monitoring camera.

Abstract: A method and a system measure interfering influences on a checkweighing device. In the method, external interference data are obtained, as are interference data from the checkweighing device itself and interference data from an object being weighed, by calculating or mapping the weighing error data in the stationary state, in the operating state, and in the weighing state. The system for measuring the interference uses a meter and a processing apparatus. The meter and the processing apparatus perform an interference measurement and a compensation method. The amount of interference in the checkweighing device in each state and the amount of influence of the interference on the weighing performance is obtained, thereby facilitating the production, debugging, maintenance, and use of a checkweighing device.

Abstract: A method for recognizing a face from monitoring video data is disclosed. Two neural networks are used to compare and score high-dimensional face features of a face, and a K-neighbor algorithm and a screening mechanism with a Euclidean distance as a threshold are combined for face comparison recognition to obtain an accurate face recognition result. In addition, the present disclosure also performs further screening based on the time of video data and the frequency of face appearance, and finally obtains a recognition result, thereby obtaining a more accurate face recognition result. The present disclosure can perform relatively accurate face recognition on video data or picture data captured by a real-time or historical monitoring camera.

Abstract: Methods of sequencing and producing nucleic acid sequences are provided. Accordingly there are provided methods of sequencing a nucleic acid sequence comprising L-nucleotides comprising subjecting the nucleic acid sequence comprising the L-nucleotides to a chemical sequencing method. Also provided is a method of reverse transcribing a ribose nucleic acid sequence into a deoxyribose nucleic acid sequence comprising catalyzing reverse transcription of the ribose nucleic acid sequence with a Sulfolobus solfataricus P2 DNA polymerase IV (Dpo4).

Abstract: A catalytic reaction of ethylene oxide (EO) coupling with syngas to produce 1,3-propanediol (1,3-PDO) is disclosed. The catalytic reaction of EO, carbon monoxide and the alcohol uses a N,O-ligand coordinated metal complex catalyst. The reaction is carried out in an organic solvent in the presence of an additive at the temperature of 30-190° C. and the CO pressure of 1-150 atm for 0.1-200 h to prepare 3-hydroxypropinate (3HP). The catalytic reaction of 3HP with dihydrogen uses a copper-containing mixed metal silicon oxide catalyst with a molecular formula of M?uCuvSiyOz. The reaction is carried out at 80-400° C. and 20-150 atm for 0.1-200 h to prepare the 1,3-PDO. The yield of the 1,3-PDO can reach to 73%. The alcohol byproduct generated in the second step catalytic hydrogenation reaction can be recycled to use for the first step catalytic reaction by the ring opening-carbonylation-esterification.