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Debris-free Laser-plasma Soft X-Ray Source for Microscopy.

This thesis describes the initial development of a new high-brightness table-top soft X-ray source suitable for microscopy. The laser-plasma utilises liquid droplets as targets and the absolute line emission in the water window (A-=2.3-4.4 nm) is typically 1·1012 photons/(stedine·pulse). The narrow bandwidth radiation makes the source suitable for zone plate optics used in microscopy. Compared to

Decision Support for Extreme Programming Introduction and Practice Selection

This paper presents an investigation concerning the introduction of Extreme Programming (XP) in software development organisations. More specifically the concept of using a decision support method known as the Analytical Hierarchy Process (AHP) is evaluated by a group of students and a group of developers and the outcome is compared to experiences from an XP case study. The results provide an indi

Use of couple-stress theory in elasto-plasticity

One way to avoid vanishing dissipative energy and localization to zero volume when examining localization and softening problems, is to introduce an internal length scale for the material by means of couple-stress theory. Here, the ‘constrained’ Cosserat theory is adopted where the displacement field also determines the rotation field. For this ‘constrained’ Cosserat theory an elasto-plastic theor