Localities and a/sync places are two recent extensions to the Petri net model. Whereas localities have been introduced as a modelling tool for membrane systems and more general GALS (globally asynchronous locally synchronous) systems, a/sync places make it possible to model synchronous communication between transitions. We investigate the interaction between locally synchronous execution and sy...

Epibiota were sampled on nine small jetties in the tidal, urban canals of south-east Queensland, Australia, to determine if the small fishes that are associated with these jetties prey on the epibiota on the pilings of the jetties and whether these fishes depend on the epibiota as a source of food. Epibiota was dominated by barnacles, filamentous and foliose algae and ranged in thickness from 4...

Texas Gulf of Mexico populations of the marine mytilid Perna perna (Linnaeus, 1758) were sampled monthly on Fish Pass Jetty (FP) (27°41’ N) from September 1993 to February 1995 and Mansfield Pass Jetty (MP) (26°34’ N) from March 1994 to June 1995 within 1 yr of initial colonization. Population density and mussel size distributions allowed identification of annual cohorts. Mean individual tissue...

Abstract We experimentally characterize the positions of diffraction maxima a phase grating on screen, for laser light at oblique incidence (so-called off-plane or conical diffraction). discuss general case geometries and derive basic equations maxima, in particular their angular dependence. In contrast to previously reported work (Jetty et al. Am J Phys 80:972, 2012), our reasoning is solely b...