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Behaviour of viscoelastic-viscoplastic spheres and cylinders—Fully plastic vessel walls

The material model consists of a viscoelastic Burgers element and an additional viscoplastic Bingham element when the effective stress exceeds the yield stress. For fully plastic vessel walls, exact closed-form expressions arc derived for the stress and strain state in pressurised or relaxation loaded thick-walled cylinders in plane strain and spheres. For the spherical problem, the material compr

A Stationary Turbine Interaction Model for Control of Wind Farms

Turbines operating in wind farms are coupled by the wind flow. This coupling results in limited power production and increased fatigue loads on turbines operating in the wake of other turbines. To operate wind farms cost effectively, it is important to understand and address these effects. In this paper, we derive a stationary model for turbine interaction. The model has a simple intuitive structu

The appropriate leader: A biographical-narrative reading of Matt 3.1–4.11

The influential scholar Ulrich Luz rejects the view of the Gospel of Matthew as an ancient biography, since he does not find any information about the education or the development of Jesus in the narrative from chapter 3. This conclusion does not give a fair description of neither ancient biographies in general nor the Gospel of Matthew in particular. Matthew actually picks up important themes in

Interactive Execution Time Predictions using Reference Attributed Grammars

A central problem for real-time scheduling is to acquire tight but conservative bounds on task execution times. We present a prototype for an environment where such bounds are interactively presented, in terms of source code constructs, to the programmer during development. The prototype is based on the language development tool APPLAB and uses an extended attribute grammar formalism, reference at