In this note, we first show that Theorem 2 in the above paper is incorrect. Then, we also show that Theorem 1 is not enough to support the claim in the above paper that the proportional-integral sliding mode control method is more robust than the linear quadratic regulator method when applying on the active suspension system with mismatched uncertainties. © 2006 Published by Elsevier B.V.

Executive Overview Good to Great has been on BusinessWeek’s best-seller list since its October 2001 release. In Good to Great, author Jim Collins identified a set of 11 firms as great, then used them to derive five management principles he believed led to “sustained great results.” We contend that due to two fatal errors, Good to Great provides no evidence that applying the five principles to o...

We construct exact solutions to the functional renormalisation group equation of O(N) model and Gross-Neveu at large N for $2<d<4$, without specifying form regulator. This allows investigate which quantities are independent choice regulator being plagued by truncation artefacts. find that only universal quantities, like critical exponents, qualitative features, existence a finite vacuum expecta...