  The behavior of a strongly charged polymer adsorbed on an oppositely charged
surface of low-dielectric constant is formulated by the functional integral
method. By separating the translational, conformational, and fluctuational
degrees of freedom, the scaling behaviors for both the height of the polymer
and the thickness of the diffusion layer are determined. Unlike the results
predicted by scaling theory, we identified the continuous crossover from the
weak compression to the compression regime. All teh analytical results are
found to be consistent with Monte-Carlo simulations. Finally, an alternative
(operational) definition of a charged polymer adsorption is proposed.
