Abstract: A fusion imaging gene and lentiviral expression plasmid, lentivirus and cell, and preparation methods and applications thereof are provided. The fusion imaging gene includes bioluminescence imaging gene, fluorescent protein gene and calcium imaging gene. The three genes are linked by linkers. The fusion gene is inserted into a modified lentiviral expression plasmid to obtain lentivirus particles carrying the fusion imaging gene.

Abstract: A method for processing a network allocation vector (NAV) includes: terminating the receiving of a first radio frame when it is determined that a target receiving station of the first radio frame being received is not a first station; and updating an NAV of the first station or maintaining the NAV of the first station unchanged according to a remaining duration of the first radio frame and a first transmission opportunity duration carried in the first radio frame, where the remaining duration of the first radio frame is the transmission time used for transmitting the remaining part of the first radio frame after the receiving of the first radio frame is terminated. The technical solution solves the problem in the related art of collisions with hidden stations caused by an inaccurate NAV update in the existing art, thereby ensuring the accuracy of an NAV update and the fairness of transmission and channel contention, and reducing collisions among hidden stations.

Abstract: Apparatus and method for controlling the position of a control object using a multi-stage actuator. A multi-stage actuator is provided with first and second actuation stages adapted to position a control object. A control circuit includes a multi-tap lattice structure and parallel first and second multiple regression filters coupled to respective taps of the multi-tap lattice structure. The control circuit concurrently generates and applies first and second disturbance rejection signals to the respective first and second actuation stages to compensate a disturbance signal component in a position error signal (PES) indicative of position error of the control object.

Abstract: Apparatus and method for controlling the position of a control object using a multi-stage actuator. In some embodiments, a multi-stage actuator is provided with first and second actuation stages adapted to position a control object. A control circuit includes a multi-tap lattice structure and parallel first and second multiple regression filters coupled to respective taps of the multi-tap lattice structure. The control circuit concurrently generates and applies first and second disturbance rejection signals to the respective first and second actuation stages to compensate a disturbance signal component in a position error signal (PES) indicative of position error of the control object.