It is with great enthusiasm that we welcome Professor Patrick Jaillet to LIDS. Patrick received his PhD from MIT in Operations Research, and for some time was on the faculty at École Nationale de Ponts et Chaussée in Paris. Subsequently he held the position of Professor at the University of Texas Austin (from 1991 to 2002), where he co-founded and was the director of UT's Center for Computation Finance. He then returned to MIT as the Edmund K. Turner Professor and Head of the Department of Civil and Environmental Engineering, a position he held from 2002 to 2009. In 2010, Patrick took on the additional role of Co-Director of the Operations Research Center. Patrick's research interests in dynamic optimization and networks are perfect matches to the research activities within LIDS. All of this, complemented by Patrick's energy, enthusiasm, and exceptional record of leadership makes him a wonderful addition to the LIDS Community.