Abstract: In a general aspect, input data for a computer process are preprocessed by a preprocessor unit that includes a quantum processor. In some aspects, a preprocessor unit obtains input data for a computer process that is configured to run on a computer processing unit. Randomized parameter values are computed for variable parameters of a quantum logic circuit based on the input data. A classical processor in the preprocessor unit computes the randomized parameter values from the input data and a set of random numbers. A quantum processor in the preprocessor unit produces quantum processor output data by executing the quantum logic circuit having the randomized parameter values assigned to the variable parameters. Preprocessed data generated based on the quantum processor output data are then provided as the input for the computer process configured to run on the computer processing unit.

Abstract: Suspension systems are provided for skis. In some implementations, the suspension system includes a spring-like element and a support structure configured to attach one end of the spring-like element to the central half of the longitudinal running length of a ski body. The spring-like element is configured so that the opposite end of the spring-like element contacts the ski body at a contact point on the front-most or rear-most fifth of the longitudinal running length of the ski body, and applies a downward force at the contact point such that the degree of free camber of the ski is increased relative to the natural free camber of the ski body without the suspension system attached.

Abstract: Snowboards are provided that consolidate and redirect a portion of the weight and forces of the rider to the optimal locations (near the edges and near the longitudinal center of the board), providing excellent turning and control and providing impact absorption when landing from a jump. In some implementations, an adjustable spring suspension system allows custom optimization of both the turning and ride characteristics of the snowboard.

Abstract: Skis and methods of skiing are provided. In some implementations, the skis include a preload, and/or have a relatively low spring rate. In one aspect, the skis include (a) a ski body having a front and a back, the front and back terminating, respectively, at a tip and tail at opposite ends of the ski body; and (b) a suspension system connected to the ski body so as to apply a load to the front and back of the ski body. In some cases, the suspension system is configured to provide the ski with a spring rate that diminishes as the ski is flexed from a normal unloaded state or a predetermined state of deflection to a state of greater deflection.

Abstract: A video camera comprises a video camera body and a light module. Structure is provided, integral with the video camera body, for selectively positioning the light module. The light module can be removably connected to the video camera body.

Abstract: An electrical connection for a battery pack to a battery charger or the like consisting of a bracket including a substantially flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing and a substantially flat female plate having a plurality of keyholes designed to facilitate receiving the projections and pairs of fixed and movable male electrical terminals positioned within a recess for engagement with the female electrical terminals.

Abstract: A battery pack connection consists of a substantially flat male plate having a plurality of spaced headed projections and female electrical terminals carried within a projecting housing and a substantially flat female plate having a plurality of keyholes designed to facilitate receiving the projections and male electrical terminals positioned within a recess for engagement with the female electrical terminals. At least one rotatable member is mounted on the female plate and has a pin that engages over the head of a corresponding projection to enable locking of the plates in both their electrical and mechanical connected relationship. Upon rotation of the member, the pin is moved out of engagement with the projection to enable uncoupling of the plates. A safety latch can be activated to abut the rotatable member when the plates are locked together to preclude inadvertent decoupling.