Abstract: A lithium supplement electrode plate and a preparation method thereof, a battery containing the lithium supplement electrode plate, and an electrical device are disclosed. The lithium supplement electrode plate includes a current collector and a coating region disposed on at least one side of the current collector. The coating region includes at least two active layers. The at least two active layers include a pore-forming agent. Two adjacent active layers that include the pore-forming agent are defined as a first active layer and a second active layer respectively, the first active layer is disposed on the current collector, the second active layer is disposed on one side, oriented away from the current collector, of the first active layer. A porosity of the second active layer is greater than a porosity of the first active layer.

Abstract: A positive electrode plate includes a current collector and a lithium supplement layer and a positive active layer that are sequentially loaded onto a surface of the current collector, and constituents of the lithium supplement layer include a positive electrode lithium supplement material, a solid electrolyte material, and a conductive agent.

Abstract: The present disclosure relates to a multi-classification non-intrusive identification and detection method for an electrical signal based on naive Bayes, including an expert database module and a signal classification module. An electrical signal training sample of a known category is built based on historical and real-time aircraft signals. Classification is performed based on a built naive Bayes model classifier, to obtain an aircraft signal classification result. P(yi) is separately calculated for each category, a conditional probability is calculated for each feature, and a classification result of a sample signal is obtained through statistic acquisition by using a probability comparison algorithm. A next status is predicted by using a time series prediction method after electrical signal data is classified and determined by using a naive Bayes algorithm.

Abstract: A positive electrode pre-lithiation reagent, which includes an inner core and a coating layer is described. The inner core includes a lithium-rich metal oxide; the coating layer covers the surface of the inner core and includes a conductive polymer and a low surface energy material. The surface energy of the low surface energy material is 10 mJ/m2 to 35 mJ/m2, optionally 10 mJ/m2 to 22 mJ/m2.

Abstract: This application provides a positive electrode plate for lithium-ion battery and a lithium-ion battery containing the same. The positive electrode plate may include a current collector, and a capacity layer and a power layer that are specially designed, able to effectively eliminate, in an economical and simple manner, the adverse impact on the battery performance caused by a product resulting from a pre-lithiation material releasing lithium during charge-discharge cycles, thereby significantly improving the first-cycle coulombic efficiency, cycling performance, and service life of batteries.

Abstract: Embodiments of the present application provide a resource allocation method and apparatus, for allocating an uplink transmission resource to a terminal device.

Abstract: Disclosed in the present application are a pilot sending and receiving method and device, configured to reduce a delay of receiving pilot data at a terminal, thus improving efficiency of channel estimation based on the pilot data. The pilot sending method provided in the present application comprises: determining a pilot data pattern configured for a user equipment device, the pilot data pattern comprising time-frequency position information of pilot data, and the time-frequency position information comprising position information of an initial time point of the pilot data in a subframe; and sending to the user equipment device, according to the pilot data pattern, the pilot data.

Abstract: Embodiments of the present application provide a resource allocation method and apparatus, for allocating an uplink transmission resource to a terminal device.

Abstract: Disclosed in the present application are a pilot sending and receiving method and device, configured to reduce a delay of receiving pilot data at a terminal, thus improving efficiency of channel estimation based on the pilot data. The pilot sending method provided in the present application comprises: determining a pilot data pattern configured for a user equipment device, the pilot data pattern comprising time-frequency position information of pilot data, and the time-frequency position information comprising position information of an initial time point of the pilot data in a subframe; and sending to the user equipment device, according to the pilot data pattern, the pilot data.

Abstract: Disclosed is a method for providing video service, including receiving by a video server an access request from a client; forwarding the access request to a client server of the client for authentication; receiving an authentication feedback fed back by the client server; and determining whether to provide a video service at least according to the authentication feedback. In addition, the disclosure also provides a method for access authentication, a video server, a client server and a video access system. The disclosure can solve the security hazard of leakage of user information and overload of a video server in the prior art.