This article describes an efficient persistent mergeable data structure for mapping intervals to values. We call this data structure rangemap. We provide an example of application where the need for such a data structure arises (abstract interpretation of programs with pointer casts). We detail different solutions we have considered and dismissed before reaching the solution of rangemaps. We sh...

Ž . The ability of the VLF-R Resistivity method to provide quantitative subsurface resistivity information is examined. The Ž . frequencies used in conventional VLF 15 to 30 kHz provide the deepest penetrations of the multi-frequency, extended method of RadioMT. Both methods are considered. VLF data, being effectively single frequency, are insufficient to resolve Ž . Ž . one-dimensional 1D vert...

The shotgun proteomic strategy based on digesting proteins into peptides and sequencing them using tandem mass spectrometry and automated database searching has become the method of choice for identifying proteins in most large scale studies. However, the peptide-centric nature of shotgun proteomics complicates the analysis and biological interpretation of the data especially in the case of hig...