Abstract: A ride-sharing system can automatically and autonomously determine whether a rider is an account holder associated with an account of a ride-sharing service that requested a ride or a guest rider. A guest rider detection system can use geolocation data to determine whether a rider is a guest rider or an account holder. The system can obtain location data for an account holder that requests a ride using a ride sharing application. The location data of the account holder can be compared with one or more locations (e.g., pickup or drop off location) associated with the requested ride. Based at least in part on the comparisons between the location data of the account holder and the one or more locations associated with the requested ride, the system can determine with a particular degree of certainty whether the rider is the guest rider or the account holder.

Abstract: A ride-sharing system can automatically and autonomously determine whether a rider is an account holder associated with an account of a ride-sharing service that requested a ride or a guest rider. A guest rider detection system can use geolocation data to determine whether a rider is a guest rider or an account holder. The system can obtain location data for an account holder that requests a ride using a ride sharing application. The location data of the account holder can be compared with one or more locations (e.g., pickup or drop off location) associated with the requested ride. Based at least in part on the comparisons between the location data of the account holder and the one or more locations associated with the requested ride, the system can determine with a particular degree of certainty whether the rider is the guest rider or the account holder.

Abstract: A ride-sharing system can automatically and autonomously determine whether a rider is an account holder associated with an account of a ride-sharing service that requested a ride or a guest rider. A guest rider detection system can use geolocation data to determine whether a rider is a guest rider or an account holder. The system can obtain location data for an account holder that requests a ride using a ride sharing application. The location data of the account holder can be compared with one or more locations (e.g., pickup or drop off location) associated with the requested ride. Based at least in part on the comparisons between the location data of the account holder and the one or more locations associated with the requested ride, the system can determine with a particular degree of certainty whether the rider is the guest rider or the account holder.

Abstract: A nucleic acid extraction composition, reagents and kits containing the same and uses thereof. Provided is a nucleic acid extraction and purification reagent free of volatile organic solvents, which prevents the damage of volatile organic solvents to people and greatly improves the timeliness of nucleic acid extraction and purification, making the operation extremely simple, and the nucleic acid can be obtained within 10 minutes. The obtained nucleic acid may be used for biological reactions such as PCR, NASBA, LAMP and RPA. Moreover, the reagents of the present disclosure may be used to extract nucleic acids of cells, bacteria, fungi, DNA viruses and RNA viruses from various samples such as blood, throat swab preserving fluid, saliva, urine, sputum, excrement and the like, and very suitable for clinical and scientific research uses.

Abstract: An LED lamp control system comprises a power supply, a MOS transistor, a signal encoding module, a control signal input module, a signal change judging module, a MOS transistor control module, an LED lamp, a filter capacitor, and a signal decoding module, and a DC/DC converter. The signal encoding module is configured to convert the control signal output by the control signal input module into a PWM signal, and the output of the signal encoding module is connected to the gate of the MOS transistor and output a PWM signal to control the on and off of the MOS transistor, the signal decoding module is configured to convert a PWM signal loaded onto the power supply output which is connected to a MOS transistor to a dimming signal. The DC/DC converter controls the output parameters of the LED lamp according to the dimming signal.

Abstract: An LED lamp control system comprises a power supply, a MOS transistor, a signal encoding module, a control signal input module, a signal change judging module, a MOS transistor control module, an LED lamp, a filter capacitor, and a signal decoding module, and a DC/DC converter. The signal encoding module is configured to convert the control signal output by the control signal input module into a PWM signal, and the output of the signal encoding module is connected to the gate of the MOS transistor and output a PWM signal to control the on and off of the MOS transistor, the signal decoding module is configured to convert a PWM signal loaded onto the power supply output which is connected to a MOS transistor to a dimming signal. The DC/DC converter controls the output parameters of the LED lamp according to the dimming signal.

Abstract: An amplifier matrix (112) has a plurality of inter-coupled matrix clusters (201), and a controller (106). The controller is programmed to detect (304) a fault in an amplification path of one of the matrix clusters, and update (316) vector relationships in the matrix clusters to minimize inter-sector isolation at the outputs of the matrix clusters.

Abstract: A feedforward amplifier circuit includes a controllable error signal subtraction module (CESSM). The CESSM has a module signal input, an error cancellation input, a module control input and a circuit output. The module signal input of the CESSM is coupled to a power amplifier via a coupler and delay circuit. The error cancellation input is coupled to a feedforward subtraction module via an error signal amplifier. The module control input is coupled to the output of a controller. In operation, the CESSM subtracts an error cancellation signal from the module signal input. Upon determining a malfunction of the power amplifier, the controller sends a signal to the module control input resulting in the CESSM isolating the module signal input from the circuit output and directly coupling the error cancellation to the circuit output.

Abstract: An amplifier matrix (112) has a plurality of inter-coupled matrix clusters (201), and a controller (106). The controller is programmed to detect (304) a fault in an amplification path of one of the matrix clusters, and update (316) vector relationships in the matrix clusters to minimize inter-sector isolation at the outputs of the matrix clusters.

Abstract: A feed forward amplifier performs a carrier cancellation tuning process separate from an IM reduction tuning process, wherein the carrier cancellation tuning process is performed without reference modulations that are utilized to modulate a feed forward amplifier input signal during the IM reduction tuning process. By decoupling the reference modulations during the carrier cancellation process, the feed forward amplifier is able to eliminate the instantaneous carrier cancellation degradation that would otherwise be caused by the reference modulations.