Abstract: A method for improving estimation of leaf area index in an early growth stage of wheat based on red-edge bands of Sentinel-2 satellite images includes the following steps: acquiring field background spectrum and wheat canopy spectrum information by means of Sentinel-2; respectively acquiring a “straw-soil” spectrum and a “wheat-straw-soil” spectrum, and calculating slopes of red-edge areas of the “straw-soil” spectrum and the “wheat-straw-soil” spectrum; calculating a tangent function SATF corrected by a background adjustment coefficient ?; constructing a wheat LAI estimation model based on a spectral variable SATFNIR-RE2; performing preliminary screening on the LAI estimation model using cross validation; and then testing the screened model with independent data.

Abstract: A liquid-cooling fracturing system includes a fracturing device; a power device connected to the fracturing device through a transmission device and configured to provide power for the fracturing device; a cooling medium storage device configured to store a cooling medium for cooling the power device; and a first heat exchange device, the first heat exchange device using cooling liquid to exchange heat with the cooling medium to cool the cooling medium.

Abstract: The present invention discloses an ergonomic sleeping mat, which comprises a sleeping mat body including a sleeping mat layer and a ground mat layer fixedly connected with each other to form into one piece, thereby forming a closed accommodation cavity therebetween. A plurality of tensioning bands spaced from each other along a longitudinal direction is arranged within the closed accommodation cavity. An upper end of each tensioning band is fixedly bonded to the sleeping mat layer, while a lower end thereof is fixedly bonded to the ground mat layer, thereby dividing the closed accommodation cavity into a plurality of inflatable cavities extending along a lateral direction. The sleeping mat layer comprises an upper body portion, a waist portion and a lower limb portion corresponding to different parts of the human body, respectively. The tensioning bands corresponding to different portions of the sleeping mat layer are configured to have different heights.

Abstract: A first modem performs a first communication service in a first frequency band. A second modem performs a second communication service in a second frequency band. The first modem and the second modem are in a first operating mode. The first modem receives, from an access network device, a switching instruction for the first communication service, where the switching instruction is used to instruct the first modem to switch from the first frequency band to a third frequency band. The first modem indicates to an arbitration apparatus that the first modem needs to be switched to the third frequency band. The arbitration apparatus determines whether the third frequency band conflicts with the second frequency band, to perform: maintaining the first operating mode, or switching the first operating mode to a second operating mode for the first modem and the second modem.

Abstract: This application provides a signal receiving method and a terminal device, to improve user experience. The method is applied to a terminal device provided with a plurality of subscriber identification module SIM cards, the terminal device is provided with a plurality of receive antennas, and the method includes: switching from a first mode to a second mode when a channel environment of a first SIM card meets a preset condition, where the first SIM card is a SIM card configured to receive a high-priority signal, the high-priority signal includes a paging message, a system message, or downlink signaling in a signaling interaction procedure, and a quantity of receive antennas configured for the first SIM card in the first mode is different from a quantity of receive antennas configured for the first SIM card in the second mode.

Abstract: A first modem performs a first communication service in a first frequency band. A second modem performs a second communication service in a second frequency band. The first modem and the second modem are in a first operating mode. The first modem receives, from an access network device, a switching instruction for the first communication service, where the switching instruction is used to instruct the first modem to switch from the first frequency band to a third frequency band. The first modem indicates to an arbitration apparatus that the first modem needs to be switched to the third frequency band. The arbitration apparatus determines whether the third frequency band conflicts with the second frequency band, to perform: maintaining the first operating mode, or switching the first operating mode to a second operating mode for the first modem and the second modem.

Abstract: A first modem performs a first communication service in a first frequency band. A second modem performs a second communication service in a second frequency band. The first modem and the second modem are in a first operating mode. The first modem receives, from an access network device, a switching instruction for the first communication service, where the switching instruction is used to instruct the first modem to switch from the first frequency band to a third frequency band. The first modem indicates to an arbitration apparatus that the first modem needs to be switched to the third frequency band. The arbitration apparatus determines whether the third frequency band conflicts with the second frequency band, to perform: maintaining the first operating mode, or switching the first operating mode to a second operating mode for the first modem and the second modem.

Abstract: A dual connectivity management method and device, the method including sending by a terminal device that communicates with a first network device and a second network device in a dual connectivity mode, a first message to the first network device, where the first message indicates or requests deactivation or suspension of the dual connectivity, and deactivating or suspending the dual connectivity.

Abstract: Example communication methods and apparatus are described. One example method includes determining by a terminal that a first transmission resource conflicts with a second transmission resource. The first transmission resource is a resource used by the terminal to send first information to a first network side device. The first network side device corresponds to a first user identity supported by the terminal. The second transmission resource is a resource used by the terminal to send second information to a second network side device. The second network side device corresponds to a second user identity supported by the terminal. The terminal sends the first information on the first transmission resource. The terminal cancels sending the second information on the second transmission resource. Alternatively, the terminal sends the second information on a third transmission resource, where the third transmission resource is a resource before or after the second transmission resource.

Abstract: A communication method includes establishing, by a communication device, a first connection to a first network device and a second connection to a second network device. The first connection and the second connection are used to process a first service. The method also includes sending, by the communication device, first information to the first network device based on the communication device determining that a second service needs to be processed. The second service is different from the first service. The first information is used to request to disable the first connection or the second connection, or the first information is used to indicate the communication device to establish a third connection to a third network device. The third connection is used to process the second service.

Abstract: This application relates to the field of communication technologies, and discloses a communication method and apparatus. The method includes: After registering with a first network and a second network, a terminal device may send first information to a network device in the first network or a network device in the second network, so that the network device in the first network or the network device in the second network can learn that the terminal device is to enter a first transmission manner or has entered the first transmission manner. The first transmission manner includes: The terminal device concurrently processes an uplink service of the first network and an uplink service of the second network.

Abstract: A wireless communications apparatus and a wireless communication method are provided. The method includes: deactivating a first wireless communication capability of a first communications module, so that the first communications module does not support the first wireless communication capability; activating a first wireless communication capability of a second communications module, so that the second communications module supports the first wireless communication capability; sending a first uplink message, where the first uplink message is used to indicate that a first user identity does not support the first wireless communication capability; and sending a second uplink message, where the second uplink message is used to indicate that a second user identity supports the first wireless communication capability.

Abstract: This application provides a signal receiving method and a terminal device, to improve user experience. The method is applied to a terminal device provided with a plurality of subscriber identification module SIM cards, the terminal device is provided with a plurality of receive antennas, and the method includes: switching from a first mode to a second mode when a channel environment of a first SIM card meets a preset condition, where the first SIM card is a SIM card configured to receive a high-priority signal, the high-priority signal includes a paging message, a system message, or downlink signaling in a signaling interaction procedure, and a quantity of receive antennas configured for the first SIM card in the first mode is different from a quantity of receive antennas configured for the first SIM card in the second mode.

Abstract: A first modem performs a first communication service in a first frequency band. A second modem performs a second communication service in a second frequency band. The first modem and the second modem are in a first operating mode. The first modem receives, from an access network device, a switching instruction for the first communication service, where the switching instruction is used to instruct the first modem to switch from the first frequency band to a third frequency band. The first modem indicates to an arbitration apparatus that the first modem needs to be switched to the third frequency band. The arbitration apparatus determines whether the third frequency band conflicts with the second frequency band, to perform: maintaining the first operating mode, or switching the first operating mode to a second operating mode for the first modem and the second modem.

Abstract: A wireless communications apparatus and a wireless communication method are provided. The method includes: deactivating a first wireless communication capability of a first communications module, so that the first communications module does not support the first wireless communication capability; activating a first wireless communication capability of a second communications module, so that the second communications module supports the first wireless communication capability; sending a first uplink message, where the first uplink message is used to indicate that a first user identity does not support the first wireless communication capability; and sending a second uplink message, where the second uplink message is used to indicate that a second user identity supports the first wireless communication capability.

Abstract: The present invention discloses a method for fixing hold time violations in circuits. The method comprises: creating a topology diagram of the circuit with a branch indicating a signal path where the hold time violation occurs in the circuit, and a node on the branch indicating a port of an element where the hold time violation occurs; dividing the circuit into a plurality of regions; and placing a hold time correction element selectively in a region corresponding to the node in the topology diagram to fix the hold time violation thereof, according to a circuit element density of the region corresponding to the node in the topology diagram. With this method there will be no new element in a region whose circuit element density is excessively large, and it is unnecessary to move an element which has been placed in the circuit and an input/output pin thereof.

Abstract: Provided is a network management device capable of suppressing interference of a preamble between cells while securing a predetermined resource. An FGW (500) as the device is a network management device for managing a plurality of base station devices each of which perform communication with communication terminal devices by the SC-FDMA method, wherein the FGW (500) is provided with a parameter determination unit (530) for determining parameters related to an uplink preamble with respect to at least one among the plurality of base station devices, and a parameter notification unit (540) for sending notifications of the determined parameters to the base station devices for which the parameters have been determined; wherein the parameter determination unit (530) determines the parameters so that transmitted sequences of the preamble do not overlap between at least two of the plurality of base station devices.

Abstract: The present invention discloses a method for fixing hold time violations in circuits. The method comprises: creating a topology diagram of the circuit with a branch indicating a signal path where the hold time violation occurs in the circuit, and a node on the branch indicating a port of an element where the hold time violation occurs; dividing the circuit into a plurality of regions; and placing a hold time correction element selectively in a region corresponding to the node in the topology diagram to fix the hold time violation thereof, according to a circuit element density of the region corresponding to the node in the topology diagram. With this method there will be no new element in a region whose circuit element density is excessively large, and it is unnecessary to move an element which has been placed in the circuit and an input/output pin thereof.

Abstract: Disclosed are methods and devices for identifying a tampered webpage and identifying a hijacked web address. The method for identifying a tampered webpage comprises: by simulating a mode of inputting a URL in an address bar of a browser, initiating a request to access a target webpage, and determining obtained page content as the first page content; by simulating a mode of jumping from a link, initiating a request to access the target webpage, and determining obtained page content as the second page content; comparing the first page content with the second page content to obtain a comparison result; and identifying, according to the comparison result, whether the target webpage is a tampered webpage. The present invention can effectively identify whether a target webpage is a tampered webpage, so that an effective means for determining whether a target webpage is tampered is provided to a user and computer services.

Abstract: Disclosed is a wireless communication apparatus in which reception precision characteristics are improved, by specially adapting the modulating processing in respect of the code words for each encoding system. A wireless communication apparatus (100) wherein an encoding processing section (120) includes a convolutional encoder that performs convolutional encoding of fixed information blocks made up of K bits. In code word partial sequences obtained on the basis of the head and tail in a fixed information block, a modulating section (130) maps bits, from bit groups constituting single symbols, to bits associated with groups having poor quality characteristics, prioritising systematic bits over parity bits. In this way, the reception quality characteristics in first code word partial sequences having good error characteristics is equalised.