DAR, dynamic alternative routing, is a simple but effective form of dynamic routing which is decentralised and which uses only a small amount of local information. This paper examines the modelling and behaviourial aspects of such a scheme. In particular various bounds are presented which hold for any kind of dynamic routing scheme, and can be used to assess the performance of DAR. DAR can be i...

The ligation of active pharmaceutical ingredients (API) for working with image processing systems in diagnostics (MRT) attracts increasing notice and scientific interest. The Diels-Alder ligation Reaction with inverse electron demand (DAR(inv)) turns out to be an appropriate candidate. The DAR(inv) is characterized by a specific distribution of electrons of the diene and the corresponding dieno...

This paper describes an extension of the dar-algorithm (Navarretta, 2004) for resolving intersentential pronominal anaphors referring to individual and abstract entities in texts and dialogues. In dar individual entities are resolved combining models which identify high degree of salience with high degree of givenness (topicality) of entities in the hearer’s cognitive model, e.g. (Grosz et al.,...

The Drosophila wing is covered by an array of distally pointing hairs that has served as a key model system for studying planar cell polarity (PCP). The adult cuticular hairs are formed in the pupae from cell extensions that contain extensive actin filaments and microtubules. The importance of the actin cytoskeleton for hair growth and morphogenesis is clear from the wide range of phenotypes se...