Abstract: A device and a method for experimental exploitation of natural gas hydrates in full-sized production wells are provided. The device includes a full-diameter well, and the full-diameter well includes a heating circulation tube, a temperature sensor tube, an upper sealing unit and a lower sealing unit. Perforations are provided along a body of the full-diameter well. A reactor includes an upper cover, a lower cover, and a reactor body. The method is conducted by using the device and the reactor. The device and method allow simulation of sand-control wellbores in actual exploitation of natural gas hydrates, and realize horizontal and vertical sand-control experiments.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, information that indicates a periodic sequence of network energy saving (NES) states that are each associated with an antenna configuration of the network node. The UE may receive, from the network node during a current time period, one or more downlink transmissions using a maximum quantity of multiple input multiple output (MIMO) layers associated with an active NES state that is identified for a current time period based at least in part on the periodic sequence of NES states. Additionally or alternatively, the UE may transmit, to the network node during the current time period, one or more sounding reference signal (SRS) transmissions using an SRS antenna sounding configuration associated with the active NES state for the current time period. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A network entity may transmit a set of spatially multiplexed synchronization signals in a same symbol period. The set of spatially multiplexed synchronization signals may indicate a parameter, such as a cell identifier, for the network entity. The network entity may select a sequence for each synchronization signal of the set. A user equipment (UE) may monitor for the set of spatially multiplexed synchronization signals during the same symbol period. The UE may differentiate each synchronization signal based on a respective sequence used to transmit each synchronization signal. The UE may determine that the set of spatially multiplexed synchronization signals were transmitted by the network entity using multiple antenna ports. The UE may determine the parameter for the network entity based on receiving the set of spatially multiplexed synchronization signals.

Abstract: Disclosed is a cleaning robot. The cleaning robot includes a body, a traveling assembly, a rolling brush assembly, a dust suction assembly, a mopping assembly, and a universal wheel. The traveling assembly, the rolling brush assembly, the dust suction assembly, the mopping assembly, and the universal wheel are all arranged on the body. The dust suction assembly includes a dust box. The rolling brush assembly is configured for sweeping garbage on a ground. The dust box is configured for receiving garbage swept by the rolling brush assembly. In an advancing direction of the cleaning robot, the dust box is arranged in front of the rolling brush assembly, and the mopping assembly and/or the universal wheel is arranged behind the rolling brush assembly.

Abstract: A method, apparatus, and system for barring at least one UE from communicating with one or more RISs is disclosed. A base station may determine to bar at least one UE from communicating with one or more RISs of a plurality of RISs. The base station may transmit, to the at least one UE, a barring indication for the one or more RISs. The barring indication may identify the one or more RISs with which the at least one UE is barred from communicating. The UE may determine to refrain from communicating with the one or more RISs based on the barring indication. The UE may communicate with the base station based on the determination to refrain from communicating with the one or more RISs.

Abstract: Provided are improved end-to-end self-supervised pre-training frameworks that leverage a combination of contrastive and masked modeling loss terms. In particular, the present disclosure provides framework that combines contrastive learning and masked modeling, where the former trains the model to discretize input data (e.g., continuous signals such as continuous speech signals) into a finite set of discriminative tokens, and the latter trains the model to learn contextualized representations via solving a masked prediction task consuming the discretized tokens. In contrast to certain existing masked modeling-based pre-training frameworks which rely on an iterative re-clustering and re-training process or other existing frameworks which concatenate two separately trained modules, the proposed framework can enable a model to be optimized in an end-to-end fashion by solving the two self-supervised tasks (the contrastive task and masked modeling) simultaneously.

Abstract: Disclosed are a dual-motor multi-gear hybrid transmission system and a vehicle. The dual-motor multi-gear hybrid transmission system includes an engine, a first motor, a second motor, a first clutch, a second clutch, a first planet row, a second planet row, a first input shaft, a second input shaft, a third input shaft and a brake assembly. The first input shaft is connected to the engine through the first clutch. The second input shaft is connected to the engine through the second clutch, and the second input shaft is sleeved outside the first input shaft. The first motor is connected to the engine. The second motor is connected to the first planet row through the third input shaft. The brake assembly is configured to brake the first planet row and/or the second planet row.

Abstract: The disclosure provides a microwave photon frequency synthesis system and method. In the disclosure, based on various combinations of path switching options of optical routing modules and electrical routing modules, the microwave photon frequency synthesis system is provided with a direct photoelectric conversion mode, an electrical frequency synthesis mode and an optical amplitude and phase control mode. The first optical signal frequency selection based on the optical frequency comb module and the frequency multiplication/division selection of the optical frequency multiplication/division module can be freely combined to realize frequency sources of various frequencies. Based on the optical frequency comb module to generate the first optical signal, and then combined with an electrical filtering module, phase noise can be reduced. The optical amplitude and phase may be controlled by the optical amplitude and phase control module.

Abstract: Embodiments of the present disclosure are directed towards techniques and configurations for ground via clustering for crosstalk mitigation in integrated circuit (IC) assemblies. In some embodiments, an IC package assembly may include a first package substrate configured to route input/output (I/O) signals and ground between a die and a second package substrate. The first package substrate may include a plurality of contacts disposed on one side of the first package substrate and at least two ground vias of a same layer of vias, and the at least two ground vias may form a cluster of ground vias electrically coupled with an individual contact. Other embodiments may be described and/or claimed.

Abstract: Certain aspects of the present disclosure provide techniques for configuring a reconfigurable intelligent surface (RIS) for wireless communication. A method that may be performed by a base station (BS) includes transmitting one or more parameters corresponding to a time period for the RIS to adapt to user equipment (UE) configuration information, the UE configuration information for configuring the RIS for RIS-assisted communication between the BS and a UE, the one or more parameters comprising a number of symbols indicative of a duration of time. The method also includes transmitting, via the RIS and separately from transmitting the one or more parameters, a control channel to the UE scheduling communication of a data channel with the UE via the RIS. The method also includes communicating, via the RIS, the data channel with the UE the duration of time after transmitting the control channel to the UE.

Abstract: Embodiments of the present disclosure provide an information determination method and device, an electronic device and a storage medium. The method includes: determining a reference signal in a case where a preset condition is satisfied; and determining information of a downlink signal or downlink channel according to the reference signal. The embodiments of the present disclosure solve a problem that physical downlink shared channels (PDSCHs) of multiple component carriers (CCs) cannot be received normally due to conflict of the PDSCHs of the CCs in a time domain in the related art.

Abstract: The present disclosure provides a gene combination for expressing and producing terrequinone A in Escherichia coli and use thereof. The gene combination includes a tdiAS gene, a tdiBS gene, a tdiCS gene, a tdiDS gene, a tdiES gene, an sfpS gene, an ScCKS gene, and an AtIPKS gene with nucleotide sequences set forth in SEQ ID NOS:1 to 8. In the present disclosure, a recombinant engineered strain capable of producing terrequinone A having anti-cancer activity is obtained by separately constructing recombinant plasmids pC02 and pU03 through the eight genes and transforming the two recombinant plasmids into E. coli. The content of terrequinone A in a fermentation broth thereof is 106.3 mg/L, which has potential application value in the biopharmaceutical field.

Abstract: This document describes techniques and systems of multiple-target, simultaneous beamforming for four-dimensional (4D) radar systems for efficient angle estimation in two dimensions with a high dynamic range. For example, a processor can use electromagnetic (EM) energy received by a two-dimensional (2D) array to determine first angles in a first dimension associated with one or more objects. The processor can then determine a subspace projection matrix using the first angles without an estimate of the power of noise or interference signals in the received EM energy. Using the subspace projection matrix, the processor can determine an interference-orthogonal subspace projection-based beamformer. With the interference-orthogonal subspace projection-based beamformer, the processor can determine the desired signal output from an adaptive beamformer for the EM energy and second angles corresponding to respective first angles for the objects.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques support decoupled uplink and downlink communications via reconfigurable intelligent surfaces. Generally, the described techniques provide for using different passive network nodes for uplink and downlink communications. A user equipment (UE) may receive, from a base station, an indication of a first transmission configuration indicator state for downlink communications with the base station and a second transmission configuration indicator state for uplink communications with the base station. The UE may receive, from the base station via a first passive device (e.g., a first reconfigurable intelligent surface (RIS)) associated with the first transmission configuration indicator state, a downlink message in a radio frame. The UE may transmit, to the base station via a second passive device (e.g.

Abstract: Aspects of the present disclosure include methods, apparatuses, and computer readable media for receiving a synchronization signal block (SSB) burst set having a plurality of SSBs that are time division multiplexed, wherein a first SSB of the plurality of SSBs and a second SSB of the plurality of SSBs have different numerologies or different waveforms, selecting a SSB of the plurality of SSBs, identifying cell information associated with a cell based on the SSB of the plurality of SSBs, and establishing a connection with the cell based on the cell information.

Abstract: Provided are a picture encoding and decoding method, an encoder, a decoder and a storage medium. The decoder decodes a bitstream to obtain a size, a coding mode, and residuals of a current block; when the coding mode of the current block is an MIP mode, calculates a second offset based on the size of the current block, a first offset and reconstructed values of adjacent pixels corresponding to the current block; determines a first prediction value of the current block according to the second offset; and determines a reconstructed value of the current block based on the first prediction value.

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE configured to receive configuration information indicating at least one cover code from a base station. The apparatus may be further configured to transmit at least one SRS to which the at least one cover code is applied in an SRS resource of an SRS resource set that is based on the configuration information. Another apparatus of the disclosure may be a base station configured to transmit configuration information indicating at least one cover code to a UE. The other apparatus may be further configured to receive at least lone SRS to which the at least one cover code is applied in an SRS resource of an SRS resource set that is based on the configuration information.

Abstract: Discloser a method and a device for wireless communications, including: transmitting a first MAC PDU, the first MAC PDU comprising a first MAC header and a first MAC subPDU, the first MAC subPDU comprising a first MAC sub-header and a first MAC SDU, the first MAC SDU comprising a first PDCP PDU; the first PDCP PDU being a PDCP PDU of a sidelink RB; herein, a target parameter is used for security algorithm of the first PDCP PDU; whether the target parameter is a LCID is related to whether the first node is a generator of the first PDCP PDU; when the first node is the generator of the first PDCP PDU, the target parameter is a LCID; when the first node is not the generator of the first PDCP PDU, the target parameter is not a LCID. The present application can better ensure security using a target parameter.

Abstract: Methods, system, and apparatus for substrate processing are provided for flowing a gas into a substrate processing chamber housing a substrate clamped to a chuck, wherein the gas is introduced at a location above the substrate; and while the gas is introduced, dechucking the substrate.

Abstract: A method for forming a semiconductor structure is provided. The method for forming the semiconductor structure includes forming a fin structure over a substrate in a first direction, forming a first gate stack, a second gate stack and a third gate stack across the fin structure, removing the first gate stack to form a trench, depositing a cutting structure in the trench, and forming a first contact plug between the cutting structure and the second gate stack and a second contact plug between the second gate stack and the third gate stack. The fin structure is cut into two segments by the trench. A first dimension of the first contact plug in the first direction is greater than a second dimension of the second contact plug in the first direction.