A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The method comprises administering to an individual an anti-cancer and a selenium compound. Based on the user’s past interactions with nodes andor tasks within the prerequisite graph, the user’s likelihood of successfully completing the potential next node is calculated, and a recommendation is made based on this calculated likelihood of the user successfully completing the potential next node. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio. The method includes decreasing the weight of the B mode image while increasing the weight of the tissue velocity image, in response to increase of brightness of the B mode image, adding thus weighted B mode image and tissue velocity image, and displaying an image obtained by the addition. Finally, an input signal of the closed loop control system is compensated with the feedback signal to generate the output signal.