Duality Techniques for Error Estimation and Mesh Adaptation in Finite Element Methods -- Hierarchical Model and Solution Adaptivity of Thin-walled Structures by the Finite-Elements-Method -- Three Lectures on Error Estimation and Adaptivity -- Hierarchic Modelling in Elasticity by generalized p- and hp-FEM -- Constitutive Relation Error Estimators and Adaptivity in Structural Engineering -- Ada…