On the ranks of certain monoids of transformations that preserve a uniform partition Fernandes, Vítor Hugo; Quinteiro, Teresa M. A publicar em Communications in Algebra (DOI:10.1080/00927872.2012.720322) The purpose of this paper is to compute the ranks of the monoid ${\cal{OR}}_{m \times n}$ of all orientation-preserving or orientation-reversing full transformations on a chain with $mn$ elements that preserve a uniform $m$-partition and of its submonoids ${\cal{OP}}_{m \times n}$ of all orientation-preserving transformations and ${\cal{OD}}_{m \times n}$ of all order-preserving or order-reversing full transformations. These three monoids are natural extensions of ${\cal{O}}_{m \times n}$, the monoid of all order-preserving full transformations on a chain with $mn$ elements that preserve a uniform $m$-partition. Moreover, we also determine the ranks of certain semigroups of orientation-preserving full transformations with restricted ranges.