Abstract: The present invention discloses a conductive silver aluminum paste, a preparation method, an electrode, and an N-type Topcon battery. The conductive silver aluminum paste comprises silver powder, metal powder containing aluminum element, powder containing silicon or boron element, glass powder, and organic carrier; wherein, when defining the total weight of the conductive silver aluminum paste as 100%, the weight percentage content of each component is: silver powder 80.0%-90.0%, metal powder containing aluminum element 0.5%-3.0%; powder containing silicon or boron element 0.1%-1.0%; glass powder 1.5%-6.0%; organic carrier 7.0%-15.0%. The present invention meets requirements for electrode materials of current development of N-type Topcon batteries well, and has advantages of low contact resistances, high open circuit voltages, high photoelectric conversion efficiency, and high output power.

Abstract: Embodiments of this specification disclose a payment information processing method, apparatus, and device, and a medium. The solution can include: obtaining a payment request that is sent by a target organization and that is generated based on a payment operation performed by a user, where the payment request includes identification information of an authorized payment account; determining account status information of the authorized payment account; determining, based on the account status information, whether a transaction corresponding to the payment request is at a transaction risk, to obtain a first determining result; and if the first determining result indicates that the transaction is not at a transaction risk, performing a first payment procedure; or if the first determining result indicates that the transaction is at a transaction risk, performing a second payment procedure including a first identity verification process.

Abstract: A conductive silver aluminum paste includes the following components by weight percentage: 80.0%-90.0% of silver powder; 0.3%-2.5% of aluminum powder; 0.0%-1.5% of silicon powder; 1.0%-6.0% of first-type glass powder; 0.5%-4.0% of second-type glass powder; and 7.0%-15.0% of organic vehicle. The first-type glass powder is Pb-Zn-B-O-M glass powder, and the second-type glass powders is Ba-B-O-M glass powder, M is at least one of alkali metal elements; the organic vehicle is a vehicle of organic resin and/or cellulose, and a content of the organic resin and/or the cellulose in the organic vehicle is not higher than 10.0% of a total mass of the organic vehicle. By introducing two different types of glass powder, the contact resistance between the metal grid and the PN junction layer is reduced, thereby obtaining high-performance silver aluminum pastes for N-type Topcon monocrystalline silicon cells and high-efficiency electrode metallization for N-type silicon solar cells.

Abstract: A system including a storage device and a controller. The storage device is configured to store a map. The map relates (i) a first portion of a memory to a first order of first dimensions, and (ii) a second portion of the memory to a second order of second dimensions. The first portion of the memory and the second portion of the memory are non-overlapping. Each of the first dimensions and each of the second dimensions has corresponding memory cells in the memory. The controller is configured to control access to the first portion of the memory according to the first order of first dimensions while controlling access to the second portion of the memory according to the second order of the second dimensions.

Abstract: A system including a register and a controller. The register is configured to store a map relating distinct regions of a memory to respective mapping modes. Each of the mapping modes identifies a predetermined order of dimensions of a respective region of the memory. Each of the dimensions of the regions of the memory is identified as a row, a bank, or a column. The mapping modes include (i) a first mapping mode having a first predetermined order of dimensions, and (ii) a second mapping mode having a second predetermined order of dimensions that is different from the first predetermined order of dimensions associated with the first mapping mode. The controller is configured to control access to the distinct regions of the memory according to the map stored in the register, including controlling access to a first region of the memory according to the first mapping mode while controlling access to a second region of the memory according to the second mapping mode.

Abstract: A method of mapping system addresses to physical addresses associated with a physical memory device receives memory requirements associated with an application, allocates a region of the physical memory device to the application (wherein the region is a contiguous portion of the physical addresses that does not overlap with any other region and is associated with a memory mapping mode), determines a memory mapping scheme for the region (wherein the memory mapping scheme defines the mapping between system addresses and the region and is based at least on the memory mapping mode) and modifies a mapping register to reflect the region. In one implementation, the method modifies the mapping register to reflect the memory mapping scheme. In another implementation, the memory requirements comprise an application type, and the memory mapping mode is determined based on the application type.