Abstract: A driver assistance system includes a distance measuring device which detects distance values of objects from the surroundings of a vehicle. Based on a coordinate system that is fixed to the vehicle, the surroundings of the vehicle are subdivided into zones. Individual quality measures are assigned to distance values from the particular zones or measured quantities derived from these distance values. The individual quality measure is a function in particular of the variation of the component of the relative velocity in the longitudinal direction of the vehicle.

Abstract: The present invention relates to a method for preparing linear alpha-olefins by oligomerizing of ethylene in the presence of a first organic solvent and a homogenous catalyst in a reactor, characterized in that the reactor overhead is cooled by means of a refrigerant.

Abstract: The present invention relates to a method for preparing linear alpha-olefins by oligomerizing of ethylene in the presence of an organic solvent and a homogenous catalyst, characterized in that the method is carried out in a reactor being fed with a gaseous feed comprising a minor amount of ethylene and a major amount of an inert gas.