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Conference Research on the Organizational Society: Advances in Multilevel and Dynamic Network Analysis, June 16, 2011, University of Paris Dauphine (Amphith&#233;&#226;tre A11)Keynote presentation by Ronald Breiger (University of Arizona)With support from the Multi-Level Social Network program (ANR) and the Multilevel Network Modeling Group (Leverhulme Trust) At the meso level of analysis, modern societies have become complex organizational, managerial and market societies with multiple, superposed, interdependent and conflicting levels of agency. This conference brings together various approaches to multilevel, social and organizational network analyses &#160;to promote collaborations and exchanges of ideas, refurbish techniques and practices for social science research on changing relationships between the meso and the macro levels. Program9h00: Opening by Jean Dolbeault, Vice-President for Research, Paris-Dauphine University9h15: Ronald Breiger, University of ArizonaSome Challenges in Multilevel Social Network Research. 10h15: Emmanuel Lazega, Universit&#233; Paris-Dauphine Dynamics of multilevel networks with two levels of agency. 11h15: Coffee break 11h30: Ale&#353; Žiberna, University of Ljubljana Blockmodeling of multilevel network data. 12h15: Moses Boudourides, University of PatrasThe strength of indirect relations in dual social networks. 13h: Lunch 14h00:&#160;Marijtje A.J. van Duijn, University of Groningen Random effects models for multilevel network analysis.&#160;14h45: Avner Bar-Hen, Universit&#233; Paris-Descartes&#160;&#160;&#160; Spatial cluster detection using the number of connected components of a graph.&#160;15h30: Mark Tranmer, University of ManchesterRandom effects models for multiple networks. 16h15: Coffee break16h30: Thomas Valente, University of Southern California Multi-level and Multi-type Network Influences on Substance Use17h00: Concluding session&#160;on advances in multilevel and dynamic network analyses.&#160;18h:&#160;Cocktail Organizers: Josiane Chatellet, Emmanuel Lazega and Maria Giuseppina BrunaFree and open attendance, but limited room, so please register josiane.chatelletping@dauphinepong.fr