Abstract: Computer-implemented methods, non-transitory, computer-readable media, and computer-implemented systems implementing a one-touch login service are described. Information about a first IP address is obtained from a verification request sent by an application client device. A token is sent to the application client device. Information about a second IP address is obtained from a number acquisition request sent by an application server. Whether the first IP address is the same as the second IP address is determined. If the same, based on a token carried in the number acquisition request, a mobile phone number of a terminal device in which the application client device is located is obtained and the mobile phone number is sent to the application server. If not the same, sending the mobile phone number of the terminal device to the application server is refused.

Abstract: A computer-implemented method for communication channel management performed by a wireless access point (AP) device is described. An original management frame that carries a target information element is constructed, where the target information element includes an information element related to communication channel management. When determined that one or more clients are connected to the AP device, for each of the determined clients: A destination address of the original management frame is set to a MAC address of the client. To obtain an encrypted management frame by using a key corresponding to the client, information in the target information element is encrypted. The encrypted management frame is sent in a WiFi network, so that a connected client in the WiFi network determines, based on the destination address, whether to process the encrypted management frame.

Abstract: Methods and devices are provided for uploading driving data to a blockchain network. The method is executed at a vehicle node in the blockchain network and includes: packing driving data of the vehicle node within a predetermined time interval every predetermined time interval to obtain a vehicle data packet of the vehicle, and storing the vehicle data packet locally in the vehicle node; broadcasting the vehicle data packet to other vehicle nodes located nearby and in the blockchain network for the other vehicle nodes to receive and store; receiving and storing other vehicle data packets broadcast by the other vehicle nodes located nearby and in the blockchain network; and when connecting to a fixed node that belongs to the blockchain network, synchronizing the vehicle data packet and the other vehicle data packets as stored to the fixed node, wherein the fixed node participates in the consensus of the blockchain network.

Abstract: Methods and devices are provided for uploading driving data to a blockchain network. The method is executed at a vehicle node in the blockchain network and includes: packing driving data of the vehicle node within a predetermined time interval every predetermined time interval to obtain a vehicle data packet of the vehicle, and storing the vehicle data packet locally in the vehicle node; broadcasting the vehicle data packet to other vehicle nodes located nearby and in the blockchain network for the other vehicle nodes to receive and store; receiving and storing other vehicle data packets broadcast by the other vehicle nodes located nearby and in the blockchain network; and when connecting to a fixed node that belongs to the blockchain network, synchronizing the vehicle data packet and the other vehicle data packets as stored to the fixed node, wherein the fixed node participates in the consensus of the blockchain network.

Abstract: Techniques described herein are directed to, among other things, wireless payment readers configured to transition between multiple different power states. In some instances, these power states include one or more relatively low-power states such that an overall battery life of the wireless payment readers are lengthened. Further, in some instances, a point-of-sale (POS) application operating on a POS device that wirelessly couples to an example wireless payment reader may cause the wireless payment reader to transition from one state to another, such as from a first, lower-power state to a second, higher-power state in response to the POS application determining that a payment is to be processed using the wireless payment reader.

Abstract: Embodiments are directed to a user input device that forms a cover for an electronic device. In one aspect, an embodiment includes a computing system having a segmented cover and a portable electronic device coupled to the segmented cover. The segmented cover may define an attachment panel and an input panel. The portable electronic device may be coupled to the segmented cover. The input panel may be configured to be placed over a device display of the portable electronic device. The input panel may include an accessory display and a touch-sensitive layer coupled to the accessory display.

Abstract: The present disclosure provides a blockchain-based method, device and system for processing vehicle driving data. The method includes: within a specific period, recording the vehicle driving data, performing consolidating cleaning or cleansing thereon, and uploading the processed vehicle driving data to a blockchain for preservation; and when a blockchain node generates a block, reading the vehicle driving data and its changes within the specific period from centralized data, confirming value measurement weighting factors with an f function based on the vehicle driving data, packing the value measurement weighting factors, performing a hash operation thereon and uploading the same to the blockchain.

Abstract: A chaotic stirring device combining plasma arc smelting and permanent magnet including a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals, and the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe; the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe.

Abstract: The present invention relates to a bio-based polyelectrolyte complex (PEC) composition suitable as a binder for fiber based materials, textiles, woven and nonwoven materials. The PEC composition comprises cationic biopolymer, anionic biopolymer acid and a polymer, and is further characterized in that the net charge of the PEC is cationic, the charge ratio of the anionic polymer and the cationic polymer is ?1, the cationic biopolymer is chitosan, wherein the concentration of cation is 0.005-30%, the anionic biopolymer is polyanions derived from nature, the acid is a Brønsted acid and/or a Lewis acid, wherein the Brønsted acid is selected from any organic and/or inorganic acids, wherein the Lewis acid is selected from any cationic mono- or multivalent atom, the weight ratio between cation and anion is 1:0.1 to 1:20, the weight ratio between the cation and acid is 1:0.01 to 1:30, chitosan has a degree of deacetylation being 66-100%, and the pH is less than 7.

Abstract: The present invention discloses a device for plasma arc melting through magnetostatic soft-contact stirring and compounding, which includes a furnace body, where a water-cooled copper crucible and a tungsten electrode are mounted in the furnace body, the tungsten electrode is located above the water-cooled copper crucible, and a groove for containing a metal raw material is opened in the water-cooled copper crucible; and a drive shaft penetrates through a side wall of the water-cooled copper crucible, one end, located at the exterior of the water-cooled copper crucible, of the drive shaft is connected with a stepper motor, one end, located in the water-cooled copper crucible, of the drive shaft is sleeved with two rotary tables, magnets having reverse magnetisms are interleaved in the rotary table, and the rotary tables are located on two sides of the groove.

Abstract: A system and method for recalibrating a projector system. The system includes one or more cameras, a projector, and at least one processor. The at least one processor is configured to execute stored instructions to project one or more patterns on to a work surface via the projector, capture images of the projected one or more patterns via the one or more cameras, perform analysis on the captured images of the one or more patterns, determine projector calibration parameters based at least in part on the performed analysis on the captured images, and recalibrate the projector system such that an image is projected onto the work surface by the projector at a correct position based on the determined projector calibration parameters.

Abstract: A chaotic stirring device combining plasma arc smelting and permanent magnet including a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals, and the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe; the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe.

Abstract: A system and method for recalibrating a projector system. The system includes one or more cameras, a projector, and at least one processor. The at least one processor is configured to execute stored instructions to project one or more patterns on to a work surface via the projector, capture images of the projected one or more patterns via the one or more cameras, perform analysis on the captured images of the one or more patterns, determine projector calibration parameters based at least in part on the performed analysis on the captured images, and recalibrate the projector system such that an image is projected onto the work surface by the projector at a correct position based on the determined projector calibration parameters.

Abstract: The present invention discloses a device for plasma arc melting through magnetostatic soft-contact stirring and compounding, which includes a furnace body, where a water-cooled copper crucible and a tungsten electrode are mounted in the furnace body, the tungsten electrode is located above the water-cooled copper crucible, and a groove for containing a metal raw material is opened in the water-cooled copper crucible; and a drive shaft penetrates through a side wall of the water-cooled copper crucible, one end, located at the exterior of the water-cooled copper crucible, of the drive shaft is connected with a stepper motor, one end, located in the water-cooled copper crucible, of the drive shaft is sleeved with two rotary tables, magnets having reverse magnetisms are interleaved in the rotary table, and the rotary tables are located on two sides of the groove.

Abstract: The present invention relates to a bio-based polyelectrolyte complex (PEC) composition suitable as a binder for fiber based materials, textiles, woven and nonwoven materials. The PEC composition comprises cationic biopolymer, anionic biopolymer acid and a polymer, and is further characterized in that the net charge of the PEC is cationic, the charge ratio of the anionic polymer and the cationic polymer is ?1, the cationic biopolymer is chitosan, wherein the concentration of cation is 0.005-30%, the anionic biopolymer is polyanions derived from nature, the acid is a Brønsted acid and/or a Lewis acid, wherein the Brønsted acid is selected from any organic and/or inorganic acids, wherein the Lewis acid is selected from any cationic mono- or multivalent atom, the weight ratio between cation and anion is 1:0.1 to 1:20, the weight ratio between the cation and acid is 1:0.01 to 1:30, chitosan has a degree of deacetylation being 66-100%, and the pH is less than 7.

Abstract: The invention is directed to a system and method for recalibrating a projector system. The projector may be calibrated using one or more cameras arranged near or adjacent to a projector of a projector system. The one or more cameras may be calibrated once and made mechanically stable so that they do not move relative to each other. During operation of the projector system, the projector may project one or more specific patterns onto a work surface, where the one or more cameras capture each of the projected patterns. All the captured images of the patterns by the one or more cameras may be used to determine projector calibration parameters in order to recalibrate the projector.