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Design and implementation of a 1024-point pipeline FFT processor

The design and implementation of a 1024-point pipeline FFT processor is presented. The architecture is based on a new form of FFT, the radix-22 algorithm. By exploiting the spatial regularity of the new algorithm, minimal requirement for both dominant components in VLSI implementation has been achieved: only 4 complex multipliers and 1024 complex-word data memory for the pipelined 1K FFT processor

Leak detection in single pipelines using hydraulic transients – experimental and field studies,

Analysis of pressure transients in long, single pipelines for water transport has a potential of providing information on hydraulic features such as air/gas pockets,leaks. Thus the transient measured in a pipeline for sewage water had an oscillation period compatible with the location of a local high point of the pipe profile. The effect of leaks on transients was studied by means of computer mo

Mating strategies and sexual conflicts in aquatic invertebrates: consequences for evolutionary differentiation

In this thesis I investigated how mating related strategies may differ among populations and how these strategies evolve in response to their local ecological environments. I have used two different study systems of aquatic invertebrates: diving beetles (Dytiscidae) and the fresh water isopod Asellus aquaticus. These systems have in common that they present distinct genetic variation within the sp