A novel soybean cultivar, designated SD93038, is disclosed. Exemplified herein is the utilization of pyrimidine derivatives which act to stimulate stem cell proliferation. The system measures an affective state of a user that experiences the haptic effect. Accordingly, information regarding how the brightness of the object is rapidly changing in time can be obtained more precisely, and an image can be output without making a projection image of the dark region completely black. The method further includes coupling the input optical signal to the optical amplifier and amplifying the input optical signal using the optical amplifier to produce an output optical signal including a second plurality of pulses.