Abstract: A leader location-determining receiver determines a leader location of a lead vehicle. A follower location-determining receiver determines a follower location of a follower vehicle, which has a container for storing a material. A data processor or position module calculates an observed relative position between the lead vehicle and the follower vehicle. Target relative positions are established between the lead vehicle and the follower vehicle. A data processor or selector selects a preferential one of the established target positions. A data processor or adjuster adjusts the observed relative position of the follower vehicle to achieve the selected preferential one of the established target positions.

Abstract: A whip ride is provided for amusement parks. A platform is provided with a guide slot extending through the platform. A drive assembly is positioned beneath the platform and includes a drive member (e.g., drive cable) moving on a constrained path. A track follows a path horizontally offset from the drive path. The drive assembly includes a bogie or drive truck mounted on the track and pivotably linked to the drive member to be driven by the drive member. A passenger whip vehicle is provided on the platform upper surface and pivotably attached via a connector extending through the guide slot to the bogie. The bogie path includes inside and outside curves, and the bogie track is vertically offset from the drive member such that its path may crossover the drive member to vary the horizontal offset and to locate the bogie track on either side of the drive member.

Abstract: A method and system for continuously monitoring patient heart rate and blood pressure during hemodialysis and for automatically controlling fluid extraction rate and/or dialysate sodium concentration in the event that blood pressure and/or heart rate indicate onset or impending onset of a patient hypotensive episode. A decrease in patient blood pressure below preselected systolic and/or diastolic low alarm limits automatically initiates a second mode of therapeutic intervention wherein sodium concentration in the dialysate is increased for a predetermined time duration. Upon detection of such low blood pressure alarm, or upon detection of an increase in patient heart rate above a preselected alarm limit, the extraction rate of fluids from the patient through the ultrafiltration membrane is reduced in a first mode of therapeutic intervention by reducing such fluid extraction rate to a minimum level.