In these notes we collect some useful facts about sheaves of modules on a ringed space that are either left as exercises in [Har77] or omitted completely. Most of these observations can be found in [Gro60], which is of course always the best reference. Nonetheless it may be useful for the reader to have an english reference when these points arise in our other notes on algebraic geometry. These...

Factors Related to Farmers' Preferences to Decrease Monk Parakeet Damage to Crops Sonia B. Canavelli a b , Marilyn E. Swisher c & Lyn C. Branch a a Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, Florida, USA b EEA Paraná, Factores Bióticos y Protección Vegetal, Instituto Nacional de Tecnología Agropecuaria (INTA), Entre Ríos, Argentina c Family Youth and Co...

Juvenile budgerigars (Melopsittacus undulatus) observed thin film transistor video playback of a virtual conspecific demonstrator using its beak to remove a stopper from a food box, either by pulling the object upward or by pushing it downward. Simultaneously (Experiment 1) or subsequently (Experiment 2), the observers were offered a similar stopper box and rewarded with access to food for each...

The use of GAs in evolvable hardware is reviewed. A case is made for implementing as much of the GA in hardware as possible. The technical difficulties of using a standard GA with an FPGA are described. A new type of GA called a Ringed GA, which features only local interactions among individuals, is introduced. A new type of reconfigurable platform called the PIG is described. The use of the PI...

In this paper, we try to determine when the derived category of an abelian category is the homotopy category of a model structure on the category of chain complexes. We prove that this is always the case when the abelian category is a Grothendieck category, as has also been done by Morel. But this model structure is not very useful for defining derived tensor products. We therefore consider ano...

Cadmium concentrations in kidneys from ringed seals (Phoca hispida) from North West Greenland (Qaanaaq) are high. Concentrations range at level known to induce renal toxic effects (mainly tubulopathy) and demineralisation (osteopenia) of the skeletal system (Fanconi’s Syndrome) in humans as well as laboratory mammals. We have studied possible cadmium induced histopathological changes in the kid...