The focus of this book is on the latest developments related to theanalysis of problems in which several scales are presented.After a theoretical presentation of the theory of homogenizationin the periodic case， the other contributions address a widerange of applications in the fields of elasticity （asymptoticbehavior of nonlinear elastic thin structures， modeling of junction of a periodic family of rods with a plate） and fluidmechanics （stationary Navier-Stokes equations in porousmedia）. Other applications concern the modeling of newcomposites （electromagnetic and piezoelectric materials）and imperfect transmission problems. A detailed approach of numerical finite element methods is also investigated.
