A new and distinct cultivar of Helleborus plant named \u2018COSEH 900\u2019, characterized by its upright and uniformly mounded plant habit; uniform and freely flowering habit; variegated leaves; long flowering period; single light yellow green-colored flowers; and good garden performance. The present invention realizes a number of business systems management functionalities, including defining event databases and means for event monitoring and correlating a customer’s business functions by using an enterprise view focused on a system of applications, operating systems, connections, and physical components. The object reflects andor scatters the probing wave toward a receiver. The arms are coupled to the delivery shaft such that the first arm and second arm are moveable between a closed position and an open position. The air pump supplies compressed air to the protective cover for inflating the protective cover when the inflation signal is outputted by the control unit. Pulses having a constant period and a substantially constant power are used, a number of the pulses within a period for forming an image corresponding to one pixel is determined on the basis of image data, and light beams emitted from the microarea light-emitting diodes are modulated by pulse signals including the determined pulses.