Abstract: Systems and methods for coupling subsea tubular members together are provided. An apparatus may be used to properly orient and/or provide communication between a first subsea tubular member that is being landed on a second subsea tubular member. An apparatus for coupling subsea tubular members may include an alignment sub and a corresponding alignment member. The alignment sub includes: a generally cylindrical body having one or more fluid, electric, or fiber optic lines extending therethrough, one or more couplings coupled to at least one end of the alignment sub, and an orientation profile disposed on a surface of the alignment sub. The alignment member has a profile designed to interface with the orientation profile of the alignment sub. One of the alignment sub and the alignment member remains stationary while the other rotates relative to the stationary structure.

Abstract: A method of controlling a plasma in a nuclear fusion reactor. The nuclear fusion reactor comprises sensors and plasma control inputs. An initial control model is provided, relating readings of at least a subset of the sensors to control of the plasma control inputs. A control loop is performed, comprising: operating the plasma control inputs in dependence upon the sensors according to the control model; determining correlations between readings of each of the sensors, and/or between readings of the sensors and states of the plasma control inputs; and adjusting the control model based on the determined correlations.

Abstract: The present application relates to a safety apparatus which is intended to aid the balance of an individual working on an elevated surface such as a horizontal mast 1. The apparatus, which consists of a support member 5 that projects up from the elevated surface, may also arrest the fall of an individual from an elevated surface by defining a support barrier in front or behind or either side of the individual. The support member may be adapted to be mounted within tool tracks already provided on a mast, and is designed to move along the tracks so as to balance the individual as he moves along the elevated surface. Alternatively, the elevated surface is provided with additional purpose-built guides or tracks designed to cooperate with the support member.