Le Travail Humain 2010/3 Vol. 73, 2010/3 - pagesPages 193 to 212Adapting to Scale Change in a Situation of Remote Motion ControlBy Rogelio Alonso, Patrice Terrier, Robert Parise, Jean-Marie CellierPages 213 to 237Factors of Dissatisfaction Encouraging Resignation and Intentions to Resign: A Comparative Analysis of Age GroupsBy Françoise Bertrand, Stéphanie Peters, Francis Pérée, Isabelle HansezPages 239 to 260Comparing the Efficiency of Two Strategies for Preventing Nosocomial Infections: Impact on Self-declared Representations and PracticesBy Bruno Quintard, A. Lecigne, A. Pascual, A.-M. Rogues, Pierre ParneixPages 261 to 290Building Samples in the Ergonomic Design of Software Products for the General Public. Determining the Necessary Quantity for Qualitative ResearchBy Annette Valentin, Alain Lancry, C. Lemarchand