We show some implications of the approach to AdS/CFT correspondence based on
Type IIB string in the flat space-time with D3-branes proposed in our previous
paper. We discuss a correspondence for high energy scattering amplitudes of N=4
super-Yang-Mills proposed recently. We also discuss AdS/CFT correspondence at
finite temperature. Our approach provides clear understanding of these issues.Comment: 14 pages, 5 figures, references added, discussions on IR
regularization clarifie
