Abstract: Systems and methods for autonomously operating an antenna assembly. The methods comprise: obtaining, by a processor of the antenna assembly, first information comprising at least one of a value for a variable altitude of the antenna assembly, a value for a variable height of the antenna assembly above ground, a value for a variable height of the antenna assembly above sea level, a value for a variable distance of the antenna assembly from a reference object, and a first value for a variable signal frequency of a communication device; using, by the processor, the information to obtain a desired length of an antenna of the antenna assembly; and controlling, by the processor, an actuator to adjust a length of the antenna until the length reaches the desired length.

Abstract: A robotic cleaner includes a housing, a suction conduit with an opening, and a leading roller mounted in front of a brush roll. An inter-roller air passageway may be defined between the leading roller and the brush roll wherein the lower portion of the leading roller is exposed to a flow path to the suction conduit and an upper portion of the leading roller is outside of the flow path. Optionally, a combing unit includes a plurality of combing protrusions extending into the leading roller and having leading edges not aligned with a center of the leading roller. Optionally, a sealing strip is located along a rear side of the opening and along a portion of left and right sides of the opening. The underside may define side edge vacuum passageways extending from the sides of the housing partially between the leading roller and the sealing strip towards the opening.

Abstract: A method for external fish parasite monitoring in aquaculture, comprising the steps of: submerging a camera (52) in a sea pen containing fish, the camera having a field of view; capturing images of the fish with the camera (52); and identifying external fish parasite on the fish by analyzing the captured images, characterized in that a target region within the field of view of the camera (52) is illuminated from above and below with light of different intensities and/or spectral compositions.

Abstract: A cartridge for a laundry appliance includes an outer housing having an interior chamber therein. The outer housing includes a primary axis and a secondary axis that is perpendicular to the primary axis. A pump is contained within the outer housing that selectively delivers a laundry chemistry from the interior chamber to a dispensing outlet of the outer housing. The dispensing outlet is defined within a contoured edge of the outer housing and orients the dispensing outlet at an oblique angle with respect to the primary and secondary axes. A rotational drive is operated by an external actuator. The rotational drive is positioned within the outer housing and in operable communication with the pump. The rotational drive aligns with a drive aperture defined within a wall of the outer housing for receiving the external actuator.

Abstract: A vibraphone pickup has a bobbin having two coils, one for outputting an analog signal and one for outputting a digital signal. A plurality of filters and buffers are used to isolate the signals. A rare earth (or neodymium) magnet is used in the center of the bobbin. In one method of use, a vibraphone pickup is used to pick up each note of the vibraphone. The output of each vibraphone pickup is combined and fed into an amplifier.