Many seabirds die each year after exposure to petroleum hydrocarbons (Piatt and Lensink 1990; Khan and Ryan 1991). Crude oil, following ingestion, induces hemolytic anemia which occurs 4 to 5 d later (Leighton et al. 1983). A recent study reported the presence of hemosiderin in the liver of common murres (Uria aalge) at intervals up to 42 d after oil-contamination (Khan and Ryan 1991). Hemoside...

A computable complexity measure analogous to computational depth is developed using the Lempel-Ziv compression algorithm. This complexity measure, which we call compression depth, is then applied to the computational output of cellular automata. We nd that compression depth captures the complexity found in Wolfram Class III celluar automata, and is in good agreement with his classi cation schem...

This paper investigates the notion of resource bounded genericity developed by Ambos Spies Fleischhack and Huwig Ambos Spies Neis and Terwijn have recently shown that every language that is t n random over the uniform probability measure is t n generic It is shown here that in fact every language that is t n random over any strongly positive t n computable probability measure is t n generic Rou...

Many studies have dealt with the effects of the ‘Amoco Cadiz’ wreck. In particular, they describe the influence of the oil spill on the benthic populations dynamics off northern Brittany coasts (western English Channel). Several mechanisms have been proposed to explain how communities have recolonised the area during these last 20 yr. In this paper, we focus on the dynamics of the Pierre Noire ...

Standard imaging techniques rely on the single scattering assumption. This requires that the recorded data do not include internal multiples, i.e. waves bouncing multiple times between layers before reaching the receivers at the acquisition surface. When multiple reflections are present in the data, standard imaging algorithms incorrectly image them as ghost reflectors. These artifacts can misl...

This paper describes the prototype implementation of a retargetable vector code generator which applies recent advances in automatic (scalar) code generation techniques to the task of generating code for a vector source language. The source language is a subset of Fortran 8X, the proposed successor to the Fortran 77 standard. The target machine is an attached vector processor. This work extends...

The Cretaceous Western Interior Seaway Drilling Project was begun in 1991 under the auspices of the U.S. Continental Scientific Drilling Program. It was intended to be a multidisciplinary study of Cretaceous carbonate and silicicl.tic rocks in cores from bore holes along a transect across the Cretaceous Western Interior Seaway. The study focuses on middle Cretaceous (Cenomanian to Campanian) st...