Abstract: An aluminum-based composite material and a brake disc made of the composite material are provided. The material includes a base material and a reinforcing phase. The base material includes the following components in mass percentage: 4.0-7.0% of Cu, 0.4-1.2% of Mg, and 0.1-0.8% of Ag, with the balance being Al. The reinforcing phase can be SiC particles having a volume percentage of 10-40%.

Abstract: A photovoltaic system and a communication method therefor. The communication method includes: each slave sends a report signal to a host, and monitors a response signal of the host; and if the at least one slave receives the response signal, the corresponding slave executes a corresponding action on the basis of the response signal. Therefore, communication between the host and each slave is achieved in a mode that each slave actively sends the report signal, the host is prevented from adopting a roll call query mode, and occupation of bus resources by the host is reduced.

Abstract: A method applied to a communication apparatus includes receiving first information and second information from a network device, wherein the first information indicates reference signal port indexes corresponding to m code division multiplexing groups, m is a positive integer greater than or equal to 2, at least two of the m code division multiplexing groups support different quantities of orthogonal ports, and the second information indicates a first reference signal port index in a reference signal port correspondence indicated by the reference signal port indexes corresponding to the m code division multiplexing groups. Based on the first reference signal port index, a port used for a reference signal is determined.

Abstract: Methods, apparatuses, and systems for reducing the power consumption of wireless communications devices are disclosed. In one aspect, a wireless communication method is disclosed. The method includes receiving, by a wireless device from a network device, indication information on a control channel. The method further includes determining, by the wireless device, validity of the indication information based on a high layer signaling or predefined information, and applying, in a case that the indication information is determined to be valid, a power saving parameter based on the indication information.

Abstract: This application provides an uplink precoding indication method including: sending first indication information and third indication information when a quantity of uplink transmission layers of a terminal device is less than or equal to X; or sending first indication information, second indication information, and third indication information when a quantity of uplink transmission layers is greater than X, where the first indication information indicates an index of a first codeword in a first codebook and a quantity of uplink transmission layers of the first codeword, the second indication information indicates an index of a second codeword in the first codebook and a quantity of uplink transmission layers of the second codeword, the third indication information indicates that the quantity of uplink transmission layers of a terminal device is greater than X, and the second codeword and the first codeword have a same coherent capability.

Abstract: A refresh rate switching method and an electronic device are provided. In the method, the electronic device dynamically switches a corresponding screen refresh rate by determining whether a current display image is a high frame rate scenario or a standard frame rate scenario. In the high frame rate scenario, a relatively high screen refresh rate is used to support a high display frame rate. In this way, a user can obtain experience of the high display frame rate, and the display image is smooth without motion blur. In the standard frame rate scenario, a default low screen refresh rate is used to reduce power consumption of an entire system.

Abstract: Methods, systems, and devices for configurations for reference signaling in mobile communication technology are described. An example method for wireless communication includes transmitting, by a network node to a wireless device, a first signaling comprising information associated with a first reference signal, the information comprising at least one of a configuration of the first reference signal, an update information of the first reference signal, or a valid period of the first reference signal.

Abstract: Factors for deriving totipotent stem cells in vitro that functionally and molecularly resemble cells from totipotent embryos are provided. A cell culture media composition for deriving cell totipotency in vitro of isolated cells and an isolated chemically induced totipotent potential stem cells (ciTPSCs) obtained by using the composition are provided. The composition comprises chemical derivers of totipotency (CDTs) from each of the following groups (1) an HDAC inhibitor, (2) a Dot1L inhibitor, (3) an RAR? agonist, and (4) optionally, a GSK inhibitor, in amounts effective to induce an untreated cell into a totipotent potential stem (TPS) cell. The ciTPSCs can be used in, e.g., cell therapy and tissue engineering.

Abstract: A wireless communication method is disclosed. The method comprises: receiving, by a wireless communication terminal from a wireless communication node, control signaling comprising one or more channel state information reference signal, CSI-RS, configuration information associated with one or more group identifiers, IDs, or one or more channel state information, CSI, measurement report configurations associated with one or more group IDs; receiving, by the wireless communication terminal from the wireless communication node, first signaling comprising a CSI-RS configuration indication; and performing, by the wireless communication terminal, at least one of a CSI-RS measurement or a transmission of a channel state information, CSI, measurement report to the wireless communication node based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information.

Abstract: Power saving techniques are described for paging operation. An example wireless communication method includes receiving, by a communication node, a signal-based wake up signal (WUS) that includes L symbols in time domain or a channel-based WUS that is included in a channel, where the signal-based WUS or the channel-based WUS is associated with the communication node or with a group to which the communication node belongs, and where the signal-based WUS or the channel-based WUS includes an indication information that indicates whether the communication node is triggered to monitor a paging occasion, and determining, by the communication node, whether to perform a paging related operation based on the indication information.

Abstract: A shutdown device for a photovoltaic module, an inverter, a rapid shutdown system, and a method for starting the rapid shutdown system are provided. The method is applied to the rapid shutdown system after each shutdown device in the rapid shutdown system initially starts. The shutdown device is switched into a mode of unlimited output in response to its success in initially starting. The shutdown device, in response to its failure to initially start or when being switched off, samples an electrical parameter at its output terminal in real time, determines whether the electrical parameter meets a preset starting condition, and switches itself on and operates in the mode of unlimited output when the electrical parameter already meets the preset starting condition.

Abstract: One or more computer-readable media store instructions that cause one or more processors to transmit a request for content, receive a first content item and a second content item associated with the first content item, and display the first content item within a content slot in an information resource. The content slot has a first size occupying a first region of the information resource. The operations further include identifying a user interaction associated with the first content item and, responsive to the user interaction, expanding the content slot from the first size to a second size and displaying, in the expanded content slot, the first content item, the second content item, and an actionable object configured to reduce the content slot from the second size to the first size. The second size occupies the first region and an adjoining second region of the information resource.

Abstract: The present disclosure provides an inversion method for determining a pollution source list based on artificial intelligence and big data, an inversion system for determining the pollution source list based on artificial intelligence and big data, and applications thereof, which provides basic data support for government sectors to formulate relevant environmental protection measures. The specific technical solution employed in the present disclosure is as follows: finding out an emission source that makes the highest contribution to the pollutant concentration of any cell with an advanced 3D CNN artificial intelligence algorithm based on artificial intelligence and big data, establishing a model of the relationship between pollutant concentration and emission, and finding out the relationship between pollutant concentration and emission with machine learning technology, i.e., estimating an emission from a given pollutant concentration, and estimating a pollutant concentration from a given emission.

Abstract: A system of automatic adjustment of a laser reflection path, comprising a central processing device, a driving device, a four-quadrant photodetector, a driving arm, a micro cantilever, a sample, a sample placing table, a light reflector, a laser, a CCD equipped with an optical microscope, a vibration sensor, a signal processing circuit, a display device, a storage device, and a control device; a system of automatic adjustment of the laser reflection path is controlled by the control device, wherein a laser beam is emitted by the laser, an image collected by the CCD equipped with the optical microscope is processed by the central processing device to identify the micro cantilever, and then a driving arm is driven by a driving device to drive the micro cantilever to move to the center of a laser spot, during which vibration signals of the driving arm are also under monitoring.

Abstract: Methods, apparatus and systems for determining a transport block size in a wireless communication are disclosed. In one embodiment, a method performed by a wireless communication device is disclosed, the method including: receiving control information from a wireless communication node, wherein the control information includes a plurality of transmission parameters related to transport blocks to be transmitted between the wireless communication device and the wireless communication node; calculating an intermediate transport block size (TBS) for the transport blocks based on the plurality of transmission parameters; modifying the intermediate TBS to generate a modified TBS in response to an event that the intermediate TBS is smaller than a threshold; and determining a final TBS for the transport blocks based on a TBS that is closest to the modified TBS, among TBSs that are in a quantized set and not smaller than the modified TBS.

Abstract: A wireless communication method for use in a wireless terminal comprises receiving, from a wireless network node, a signal associated with a paging message, and processing the received signal based on an event associated with an extended user equipment identification, UE ID, of the wireless terminal.

Abstract: In some embodiments, devices for use as blood-brain barrier models are disclosed. The devices may include either a hydrogel component that surrounds a channel formed between a first opening and a second opening of the hydrogel component, or a hydrogel component that forms a groove. The devices may further include pericytes disposed in the channel or the groove, and endothelial cells may be disposed in the channel or the groove. The hydrogel component may include astrocytes (e.g., printed into the hydrogel component via projection stereolithography). Also disclosed are various methods of making and using these devices.

Abstract: In a described embodiment, a first model for processing a first set of data corresponding to a first data space, in which the first model includes a first feature extractor configured to extract a first set of feature representations is implemented. A second model is implemented for processing a second set of data corresponding to a second data space, in which the second model includes a second feature extractor configured to extract a second set of feature representations. Information from the second model to the first model is transferred via a connection, in which the connection links the first model and the second model. The second model is trained using a labeled set derived from the second set of data and the first model is trained using a labeled set derived from the first set of data and a plurality of outputs from the second feature extractor. Parameters of the second model are aggregated to form a global model.

Abstract: The present disclosure discloses an organic electroluminescent device. The device of the present disclosure has at least one layer in the hole transport layer that is a compound with an alkyl, cycloalkyl, deuterated alkyl, or deuterated cycloalkyl substitution on the biphenyl group; and substitution of alkyl, cycloalkyl, deuterated alkyl, deuterated cycloalkyl has the following advantages: larger spatial steric hindrance and torque, higher hole mobility, better solubility, higher efficiency and longer lifespan, and higher lateral resistance. Therefore, when paired with the P-dopant material currently used in the market, the lateral leakage of the device is significantly reduced and the technical problem of client-side crosstalk is solved.

Abstract: Methods, systems, and devices for power saving schemes in a wireless communication are described. A wireless communication method is provided to include obtaining, by a network device, one or more parameters of a user device, determining, by the network device, whether the one or more parameters satisfy a predetermined condition, and configuring the user device in a power saving mode based on the one or more parameters.