IUTAM Bureau Prize recipients Beginning with the 17th International Congress in Grenoble (1988), the presiding Bureau of the International Union of Theoretical and Applied Mechanics has selected 2 or 3 outstanding young scientists for the Bureau Prize, based on their papers and their presentations at the Congress.  To be eligible for the award, a presenter must be no older than 35 years of age at the time of the Congress, and must indicate that he/she wishes to be considered for the award. 2004, Warsaw Mr. Ingo Kaiser German Aerospace Center, Institute of Robotics and Mechatronics, Wessling, Germany, with the paper The running behaviour of an elastic wheelset presented during a Lecture. Ms. Pantxika Otheguy École Polytechnique, Palaiseau, France, with the paper Instability of corotating vertical vortices in a stratified fluid presented during a Lecture. Mr. Taisuke Sugii Department of Mechanical Engineering, The University of Tokyo, Japan, with the paper Molecular dynamics study of permeation process of small molecules through a lipid bilayer presented during a Seminar. 2000, Chicago Prof. Tim Colonius Division of Engineering and Applied Science, California Institute of Technology, USA, with the paper Simulation, modeling, and control of self-sustained oscillations in the flow past an open cavity presented during a Lecture. Mr. Philippe Corvisier Mécanique et Energétique des Fluides en Situation Reélle, Laboratoire d'Energétique et de Mécanique Théorique et Appliquée, France , with the paper Analysis of the rheological structure evolution for a thixotropic fluid flow in a pipe presented during a Seminar. Mr. Thomas Daxner Institute of Lightweight Structures and Aerospace Engineering, Vienna University of Technology, Austria, with the paper Adaptation of the density distribution in weight-efficient metal foam structures presented during a Lecture 1996, Kyoto Dr. Jacqueline Vollmann Institute of Mechanics, ETH Zürich, Switzerland, with the paper Wave propagation in cylindrical structures containing viscoelastic components presented during a Lecture. Dr. Peter J. Thomas Department of Engineering, University of Warwick, United Kingdom, with the paper An experimental study of gravity currents in a rotating frame of reference presented during a Lecture. 1992, Haifa Xie-Nung Chen China, with the paper Slender ship moving at near-critical speed in a shallow channel presented during a Seminar. Mr. Simon D. Guest Department of Engineering, University of Cambridge, United Kingdom, with the paper Propagation of destabilizing waves in the folding of faceted tubes presented during a Lecture. 1988, Grenoble Prof. Hideyuki Horii Department of Civil Engineering, University of Tokyo, Japan, with the paper Mechanics of cracked solids and models of fracture process zone presented during a Lecture. Prof. Robert E. Johnson Department of Theoretical and Applied Mechanics, University of Illinois at Urbana-Champaign, USA with the paper Coating flows in rotational molding presented during a Seminar. Dr. Arne Lorenzen Max-Planck Institut für Strömungsforschung, Göttingen, Germany, with the paper Observation of hysteresis in baroclinic unstability presented during a Lecture.