Abstract: The present application relates to a secondary battery, comprising (1) a positive electrode plate; and (2) an electrolyte solution; wherein a positive electrode active material is an active material having a chemical formula of AxB1-xMeO2 or AxB1-xMPO4 with dications A and B, where Me, M, A, B, and x are as defined in the specification; and the electrolyte solution comprises an electrolyte salt of the dications A and B, where A and B are as defined in the positive electrode active material; as well as a method for preparing a corresponding positive electrode active material, a corresponding battery module, a battery pack, and an electrical apparatus. The secondary battery of the present application comprises a positive electrode active material comprising the dications A and B and an electrolyte solution of a salt of the same dications.

Abstract: The present disclosure provides a decision feedback equalizer circuit. The decision feedback equalizer circuit includes: a first adder circuit, configured to add sampled data, first correction data and target correction data; a first sampler amplifier, configured to sample data output by the first adder circuit through a first signal component in a first clock signal to obtain a first sampling result; a second adder circuit, configured to add the sampled data, the first correction data and the target correction data; a second sampler amplifier, configured to sample data output by the second adder circuit through a second signal component in the first clock signal to obtain a second sampling result; and a correction parameter processing element, configured to determine the target correction data through a second clock signal, the first sampling result and the second sampling result.

Abstract: Example blockchain-based user element authentication methods, apparatuses, systems and computer-readable media are provided. In an example, a node device in a blockchain receives a smart contract invocation transaction, where the smart contract invocation transaction includes an encrypted to-be-authenticated user element provided by a user client. In response to the smart contract invocation transaction, the node device invokes encryption conversion logic in the smart contract, decrypts the encrypted to-be-authenticated user element in a trusted computing environment, and performs secondary encryption processing. The user element authentication authority decrypts the to-be-authenticated user element and performs user element authentication. The node device obtains an authentication result submitted by the user element authentication authority and stores the authentication result in the blockchain.

Abstract: The present disclosure discloses a decision feedback equalizer and a method for acquiring and correcting data. The decision equalizer comprises: a first decision sampling circuit; and a second decision sampling circuit; wherein an input end of the first decision sampling circuit is configured to receive sampling data and a first sampling result outputted by the second decision sampling circuit in a previous sampling period, so as to determine a first correction mode for the sampling data by means of the first sampling result, and correct the sampling data by means of the first correction mode; and an input end of the second decision sampling circuit is configured to receive sampling data and a second sampling result outputted by the first decision sampling circuit in a previous sampling period, so as to determine a second correction mode for the sampling data according to the second sampling result, and correct the sampling data according to the second correction mode.

Abstract: The present disclosure provides a decision feedback equalizer circuit. The decision feedback equalizer circuit includes: a first adder circuit, configured to add sampled data, first correction data and target correction data; a first sampler amplifier, configured to sample data output by the first adder circuit through a first signal component in a first clock signal to obtain a first sampling result; a second adder circuit, configured to add the sampled data, the first correction data and the target correction data; a second sampler amplifier, configured to sample data output by the second adder circuit through a second signal component in the first clock signal to obtain a second sampling result; and a correction parameter processing element, configured to determine the target correction data through a second clock signal, the first sampling result and the second sampling result.