Results of the recently developed unitary isobar model (MAID) are presented
for helicity amplitudes, spin asymmetries, structure functions and relevant sum
rules for real and virtual photons in the resonance region. Our evaluation of
the energy-weighted integrals is in good agreement for the proton but shows big
discrepancies for the neutron.Comment: 10 pages LaTeX including 3 figures, Talk given at the GDH 2000
Conference, Mainz, June 14-17, 2000; to be published in World Scientifi
