Abstract: In various aspects, code-based indicia contain secured network access credentials. In some aspects, a computer processor receives user input that specifies secured network access credentials, and the computer processor creates or modifies credentials for establishing a secured network connection. In these aspects, the computer processor generates code-based indicia that contain at least part of the secured network access credentials. In other aspects, a computer processor scans the code-based indicia and extracts the network access credentials. In these aspects, the computer processor employs the network access credentials to establish the secured network connection. In additional aspects, a network router apparatus renders the code-based indicia to an active display. In further aspects, a network router apparatus conditions grant of network access to a device on receipt from the device of an answer to a security question included in the secured network access credentials.

Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.

Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.

Abstract: An optical lens assembly and an imaging device including the optical lens assembly are disclosed. The optical lens assembly may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially from an object side to an image side along an optical axis. The first lens may have a negative refractive power with an image-side surface being concave. The second lens may have a positive refractive power with an object-side surface being convex. The third lens may have a negative refractive power with an object-side surface and an image-side surface being concave. The fourth lens may have a positive refractive power with an object-side surface and an image-side surface being convex. The seventh lens may have a positive refractive power with an object-side surface being convex.

Abstract: A mobile terminal is provided. The mobile terminal includes a light emitter, a light receiver, a light fidelity (LiFi) controller coupled with the light emitter and the light receiver, and a time-of-flight (TOF) controller coupled with the light emitter and the light receiver. The LiFi controller is configured to control the light emitter to emit a signal and control the light receiver to receive another signal. The TOF controller is configured to control the light emitter to emit a measurement light and determine a measured distance by performing distance measurement according to a reflected light of the measurement light received by the light receiver.

Abstract: Example methods are provided for unbalanced storage resource usage configuration for a distributed storage system in a virtualized computing environment. The method may comprise: obtaining usage data associated with multiple storage resources forming the distributed storage system; and based on the usage data, determining a higher usage set and a lower usage set from the multiple storage resources. The method also comprise configuring the multiple hosts to use the multiple storage resources in an unbalanced manner by using the higher usage set at a higher usage level compared to the lower usage set.

Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.

Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.

Abstract: Embodiments of the present disclosure disclose a method and apparatus for outputting information. A specific embodiment of the method comprises: importing a first obstacle point cloud and a second obstacle point cloud having a to-be-calculated similarity into a pre-trained similarity calculation model to generate a similarity between the first obstacle point cloud and the second obstacle point cloud, the similarity calculation model being used for characterizing a corresponding relationship between the two obstacle point clouds and the similarity; and finally outputting the generated similarity. The embodiments have effectively reduced labor and time cost as result of determining various parameters for calculating the similarity.

Abstract: A method for improving the quality of a polyester industrial yarn is provided. First, in the cooling process of preparing a polyester industrial yarn prepared by polyester spinning, the longitudinal height is kept unchanged, and the cross-sectional area of the slow cooling chamber is enlarged. The chamber maintains the surface temperature of the spinneret by means of heat preservation, and then uses an oil agent containing 67.30-85.58 wt % crown ether in the oiling process of polyester industrial yarn prepared by polyester spinning. Enlarging the cross-sectional area of the slow-cooling chamber refers to the cross section of the slow cooling chamber is changed from a circular shape to a rectangular shape while keeping the spinneret connected to the slow cooling chamber unchanged. The cleaning cycle of the spinneret is prolonged by 35-45%, the full package rate of polyester industrial yarn is larger than 99%.

Abstract: A method, a device and a computer-readable storage medium for providing a visual representation of a set of objects are provided. The method includes determining a first position in a drawing area, the first position for providing first display information of a first object in the set of objects; determining a usable position associated with the first position from a plurality of preset positions in the drawing area; determining a second object associated with the first object from the set of objects; and providing second display information of the second object in the usable position.

Abstract: The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.

Abstract: A method for processing network data traffic includes obtaining a first distributed structure corresponding to a program based on a first storage structure, wherein the program is configured to process network data traffic; dividing a network device based on a second storage structure into a plurality of execution units, wherein the plurality of execution units is configured to execute the program; mapping the first distributed structure and the plurality of execution units to obtain a second distributed structure; and controlling the plurality of execution units to process network data traffic based on the second distributed structure.

Abstract: For a power supply with a reduced number of semiconductor devices, a phase shifting transformer receives a three-phase primary voltage and steps the three-phase primary voltage one of up and down to a secondary voltage with a plurality of secondary winding sets. There is phase shifting between different secondary winding sets. A plurality of power cell sets each comprise a plurality of power cells cascaded connected, and each power cell receives one of a single phase and a three-phase voltage of a distinct secondary winding set of the phase shifting transformer. Each power cell comprises no more than eight power semiconductor devices organized as a rectifier and an inverter. Each power semiconductor device is one of a diode and an active switch. Each power cell set generates one phase of a three-phase alternating current output.

Abstract: The disclosure discloses a method and apparatus for identifying a static obstacle. An embodiment of the method includes: determining, based on determining information corresponding to a historical laser point cloud sequence of an obstacle, a detected laser point cloud of the obstacle in a current laser point cloud frame belonging to the historical laser point cloud sequence of the obstacle, whether a given obstacle is a static obstacle. The determining information includes: a similarity between a historical motion characteristic of the given obstacle and a noise type motion characteristic, a matching degree between an appearance characteristic of the detected laser point cloud of the obstacle and an appearance characteristic of the historical laser point cloud of the obstacle, and an overlap ratio between the detected laser point cloud of the obstacle and the historical laser point cloud of the obstacle.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for generating a knowledge graph, a device, and a computer readable storage medium. The method includes: establishing a graph database based on a set of entities and relationships among the entities in given content; receiving a graph query for the given content from a user; and generating, based on the graph database, a knowledge graph of the given content by using a predefined formatted layout, the knowledge graph having a network structure.

Abstract: Example methods are provided for unbalanced storage resource usage configuration for a distributed storage system in a virtualized computing environment. The method may comprise: obtaining usage data associated with multiple storage resources forming the distributed storage system; and based on the usage data, determining a higher usage set and a lower usage set from the multiple storage resources. The method also comprise configuring the multiple hosts to use the multiple storage resources in an unbalanced manner by using the higher usage set at a higher usage level compared to the lower usage set.

Abstract: The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.

Abstract: A method is used in managing recovery of file systems. A determination is made during recovery of a file system as to whether information required for recovering the file system is missing. Based on the determination, storage for a slice is provisioned. The slice is updated with the information required for recovering the file system. Recovery of the file system is performed.

Abstract: A method for processing network data traffic includes obtaining a first distributed structure corresponding to a program based on a first storage structure, wherein the program is configured to process network data traffic; dividing a network device based on a second storage structure into a plurality of execution units, wherein the plurality of execution units is configured to execute the program; mapping the first distributed structure and the plurality of execution units to obtain a second distributed structure; and controlling the plurality of execution units to process network data traffic based on the second distributed structure.