Abstract: A system and related method identify a weakness of a workflow in a complex system. The method collects runtime data about the complex system. The complex system comprises a plurality of subcomponents, and the method identifies an abnormal operation in the complex system. The method constructs a multi-dimensional cause-and-effect relation matrix among the plurality of subcomponents, and filters one or more related operations using the multi-dimensional cause-and-effect relation matrix.

Abstract: Eyeglasses with lenses changeable include a frame provided with two semi-rims, and two lenses. The semi-rims have two bent insert means formed in two ends to fit in two insert holes bored in the two opposite sides of the two lenses. The two lenses respectively have an intermediate insert grooves formed in an upper curved edge for each semi-rim to fit therein so as to let each lens combined stably with each semi-rim without swaying or falling off. Thus the lenses may be assembled with the semi-rims easily and quickly, and in addition may be changed to other ones of different colors.