@techreport{TR-IC-00-14, number = {IC-00-14}, author = {F. K. Miyazawa and Y. Wakabayashi}, title = {Parametric On-Line Algorithms for Packing Rectangles and Boxes}, month = {August}, year = {2000}, institution = {Institute of Computing, University of Campinas}, note = {In English, 16 pages. \par\selectlanguage{english}\textbf{Abstract} We present approximation algorithms for the following problems: the two-dimensional bin packing, the three-dimensional packing problem and the container packing problem. We consider the special case in which the items to be packed are small and must be packed on-line. We say an item is small if each of its dimension is at most $1/m$ of the respective dimension of the recipient, where $m$ is an integer greater than 1. To our knowledge, the asymptotic performance bound of these algorithms are the best so far obtained for this special case (parametric on-line). For the above problems, (in the respective order) the algorithms we describe have bounds 2.112, 2.112, and 3.112, for $m = 2$; and bounds 1.73, 1.73 and 2.285, for $m = 3$. } }