Abstract: A method for dynamically building a conflict check rule table in smart home comprises: sending (101) a smart home network access request to a cloud server by first smart home device, when accessing a smart home network for the first time; obtaining (103) one or more second smart home devices having accessed the smart home network by the cloud server; searching (104) for second smart home service conflicting with the first smart home device in one or more second smart home services recording to second conflict check rule table stored therein, and adding a search result to first conflict check rule table corresponding to the smart home network by the cloud server. The method can avoid waste of electricity and the reduction of service life of the smart home device, and avoid unnecessary conflict check, thereby accelerating the response speed of the conflict check and improving the user experience.

Abstract: Disclosed in embodiments of the present disclosure are a method for dynamically building an environment conditioning rule list in smart home, and a device. The method comprises: upon successful access of a smart home network by a first smart home apparatus, acquiring an environment conditioning function of the first smart home apparatus, a smart home apparatus set having access to the smart home network, and environment conditioning functions of one or more smart home apparatuses in the set, and determining, from the one or more smart home apparatuses, one or more second smart home apparatuses having the same environment conditioning function as the first smart home apparatus, to dynamically build an environment conditioning rule list of the smart home network.

Abstract: A method for monitoring polarization quality of a piezoelectric film is described. In this method, a detection step is performed on a piezoelectric film by using a detection device with a non-contact method during a polarization process of the piezoelectric film, to obtain a static electricity information or a transmittance information. A determination step is performed by using the static electricity information or the transmittance information to determine a polarization degree of the piezoelectric film.

Abstract: A polyester with ultra-high flowability and good stability over time is provided. The polyester can be polybutylene terephthalate (PBT) or another aliphatic polyester, whose intrinsic viscosity (IV) is less than 0.6 dL/g and a carboxylic end group (CEG) content is 15 meq/kg or less, and characterized by having a melt volume rate (MVR) of greater than 400 cm3/10 min at 250° C. A resin composition of this polyester is provided, which can be meltblown into microfibers of a uniform diameter and a concentrated diameter distribution, forming a fabric with a uniform small pore size.

Abstract: A preparation method a graphene dispersion is provided, including the following steps. First, a homogenization process is performed on a graphene powder and a processing solvent to form a graphene paste. Next, a layer-thinning process is performed on the graphene paste to form a graphene dispersion.

Abstract: A graphene dispersion is provided. The graphene dispersion is formed by a graphene powder and a processing solvent, wherein the graphene in the graphene dispersion has an average diameter of 0.5 ?m to 1 ?m, 3 to 5 layers, a solid content of 5% to 50%, and a residue oxygen content less than 1 wt %, and after being left to stand for 12 hours, the graphene dispersion has a distribution concentration increasing from the top section to the bottom section of the storage container, a viscosity of 5000 cps to 8000 cps, and a graphene concentration of 20 wt %.

Abstract: Example data transmission methods and apparatus related to the field of communications technologies are described. One example method includes receiving, by a terminal based on a first transmission scheme, data sent by a network device, wherein the first transmission scheme is a data transmission scheme in which different redundancy versions (RV) of a same transport block (TB) are simultaneously transmitted by using two transmission configuration indication (TCI) states.

Abstract: A method for polarizing a piezoelectric film is described. In this method, a piezoelectric film is formed by using an injection deposition method. The piezoelectric film is flat adhered to a surface of a conductive substrate. A polarization process is performed on the piezoelectric film while the piezoelectric film is flat adhered to the surface of the conductive substrate.

Abstract: An air flow generating device, a graphene dispersion, and a preparation method thereof are provided. The graphene dispersion is formed by a graphene powder and a processing solvent, wherein the graphene in the graphene dispersion has an average diameter of 0.5 ?m to 1 ?m, 3 to 5 layers, a solid content of 5% to 50%, and a residue oxygen content less than 1 wt %, and after being left to stand for 12 hours, the graphene dispersion has a distribution concentration increasing from the top section to the bottom section of the storage container, a viscosity of 5000 cps to 8000 cps, and a graphene concentration of 20 wt %.

Abstract: This application discloses a data transmission method and apparatus. A network device determines first information, where the first information is used to indicate transmission parameters required for a plurality of transmissions of to-be-transmitted data; the network device sends the first information to a terminal device; and the network device sends the to-be-transmitted data to the terminal device for a plurality of times based on the first information.

Abstract: A vehicle control system includes: a steering wheel, a steering wheel steering angle sensor configured to acquire rotation information of the steering wheel, a steering wheel drive unit connected to the steering wheel and configured to drive the steering wheel to rotate, a steering mechanism configured to drive wheels of the vehicle to rotate, a wheel steering angle sensor configured to detect rotation information of the wheels, and a control module. The control module is electrically connected to the steering mechanism, the wheel steering angle sensor, the steering wheel steering angle sensor, and the steering wheel drive unit separately.

Abstract: This application provides a data transmission method and apparatus, to determine a TC-state used for data transmission and correctly receive downlink data, thereby improving data transmission efficiency. The method includes: receiving a first physical downlink control channel (PDCCH), where the first PDCCH is used to schedule a first physical downlink shared channel (PDSCH); receiving a downlink signal by using a first transmission configuration indicator state (TC-state); obtaining a time interval between the first PDCCH and the first PDSCH; and if the time interval is less than a preset threshold, obtaining the first PDSCH from the downlink signal.

Abstract: This application discloses an information determining method and an apparatus, the information determining method includes: receiving second indication information from a network device; and determining, based on a plurality of parameters indicated by the second indication information, a transmission manner of transmitting same data by using a plurality of transmission configuration indicator states (TCI-states), wherein the plurality of parameters comprise at least a quantity of TCI-states and a quantity of consecutive transmissions of the same data.

Abstract: This application provides a method and an apparatus for sending feedback information and a method and an apparatus for receiving feedback information, to reduce resource waste in a data retransmission process.

Abstract: A sonic tool is activated in a well having multiple casings and annuli surrounding the casing. Detected data is preprocessed using slowness time coherence (STC) processing to obtain STC data. The STC data is provided to a machine learning module which has been trained on labeled STC data. The machine learning module provides an answer product regarding the states of the borehole annuli which may be used to make decision regarding remedial action with respect to the borehole casings. The machine learning module may implement a convolutional neural network (CNN), a support vector machine (SVM), or an auto-encoder.

Abstract: A polyester with ultra-high flowability and good stability over time is provided. The polyester can be polybutylene terephthalate (PBT) or another aliphatic polyester, whose intrinsic viscosity (IV) is less than 0.6 dL/g and a carboxylic end group (CEG) content is 15 meq/kg or less, and characterized by having a melt volume rate (MVR) of greater than 400 cm3/10 min at 250° C. A resin composition of this polyester is provided, which can be meltblown into microfibers of a uniform diameter and a concentrated diameter distribution, forming a fabric with a uniform small pore size.

Abstract: A chopper stabilized amplifier includes a first transconductance amplifier, first chopping circuitry coupled to an input of the first transconductance amplifier for chopping an input signal and applying the chopped input signal to the input of the first transconductance amplifier, and second chopping circuitry coupled to an output of the first transconductance amplifier for chopping an output signal produced by the first transconductance amplifier. A ping-pong notch filter is connected to an output of the second chopping circuitry and performs an integrate and transfer function on a chopped output signal produced by the second chopping circuitry to filter ripple voltages. The ping-pong notch filter includes parallel connected first and second notch filters, each of which has an input coupled to the output of the second chopping circuitry.

Abstract: A method for detecting zero-current of a voltage converter includes resetting a comparator output during a first period when a power switch of the voltage converter is turned on, and receiving, by an offset cancellation circuit, sample signals from the comparator. The method also determines a comparator offset using the sample signals. In response to an output voltage of the voltage converter being less than a threshold voltage, the comparator output is reset during a second period when the power switch is turned off. The comparator compares a first signal from the voltage converter with a second signal representing a ground voltage to generate a ZCD signal indicative of a comparison of the first and second signals. Then, an offset cancellation signal indicative of the determined comparator offset is generated to cancel the comparator offset.

Abstract: An anthracene material, an organic light emitting diode using the same, and a method for manufacturing the same, are provided. The organic light emitting diode includes a substrate, a first conducting layer, a hole transport layer, a light emitting layer, an electron transport layer, and a second conducting layer. The first conducting layer is disposed on the substrate. The hole transport layer is disposed on the first conducting layer. The light emitting layer having the anthracene material is disposed on the hole transport layer. The electron transport layer is disposed on the light emitting layer. The second conducting layer is disposed on the electron transport layer.

Abstract: A method for detecting zero-current of a voltage converter includes resetting a comparator output during a first period when a power switch of the voltage converter is turned on, and receiving, by an offset cancellation circuit, sample signals from the comparator. The method also determines a comparator offset using the sample signals. In response to an output voltage of the voltage converter being less than a threshold voltage, the comparator output is reset during a second period when the power switch is turned off. The comparator compares a first signal from the voltage converter with a second signal representing a ground voltage to generate a ZCD signal indicative of a comparison of the first and second signals. Then, an offset cancellation signal indicative of the determined comparator offset is generated to cancel the comparator offset.