Related papers: An Optimized Lifetime Enhancement Scheme for Data …

This paper has been withdrawn by the author(s), due a crucial sign error in Eqn. 1.

This paper has been withdrawn by the author due to extremely unscientific errors.

This paper has been withdrawn by the author due to an error in section 7. There is a new version: arXiv:1011.3352.

This paper has been withdrawn by the author because Lemma 3 is incorrect. This mistake is crucial in this paper.

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors; the main conclusion is incorrect, as some of the crucial calculations were not properly converged.

This paper has been withdrawn by the author,due a immature idea.

This paper has been withdrawn

The paper is withdrawn due to mistakes in the proofs for Proposition 1.2 and Theorem 2.2.

This paper has been withdrawn by the authors due to an error.

This paper has been withdrawn by the author due to crucial errors.

This paper has been withdrawn by the author

This paper has been withdrawn by the authors pending corrections.

This paper has been withdrawn by the authors due to a crucial error in calculation.

The paper has been withdrawn by the author because the result obtained has been reported earlier by other authors.

This paper has been withdrawn by the authors. We have discovered an error in the evaluation of the diagram, which invalidates our conclusion.

This paper has been withdrawn by the authors. I will do the major revision.

%auto-ignore This paper has been withdrawn by the author, due to a crucial error.

This paper has been withdrawn by the author due to a errors in figure 3,4

This paper has been withdrawn by the author due to an error.