A remark on the Tate conjecture

The Tate conjecture has two parts: an assertion (S) about semisimplicity of Galois representations, and an assertion (T) which says that every Tate class is algebraic. We show that in characteristic 0, (T) implies (S). In characteristic p an analogous result is true under stronger assumptions.Comment: 3 pages; updated version that includes a result in characteristic p. To appear in the J. of Alg. Geo

Motivation and Performance, Blog 7

Student blog posts from the Great VCU Bike Race Book

The Effects of Owl Decoys and Non-threatening Objects on Bird Feeding Behavior

As traditional agricultural practices change, the scarecrow has also been renovated and modernized to include mock natural predators, such as owls, hawks, and falcons instead of comical human representations. These facsimiles represent an excellent opportunity to examine anti-predatory tactics and vigilance behavior in birds as a response to perceived threats. In this study, we tested songbird reaction to an owl decoy that mimicked the presence of a predator and to a non-threatening object placed in an oak woodland within Oregon’s Willamette Valley. Frequency of bird visitations to bird feeders when either a plastic owl or a cardboard box of similar size was used to examine the effect of the presence of a predator on bird feeding behavior. We hypothesized that introduction of a model owl would reduce the number of birds observed at a nearby feeder, but a cardboard box would not have a significant effect on bird presence. Using paired t-tests, we determined that a false predator was effective in deterring bird species from feeding, while a box was not

La Fontaine : Etude de Salon

https://digitalcommons.library.umaine.edu/mmb-ps/3591/thumbnail.jp

An Archaeological Survey for the Las Palmas Wastewater Collection System Improvement Project in West-Central Zapata County, Texas

An archaeological survey of the route of a proposed sanitary sewer line in west-central Zapata County, Texas was performed by Brazos Valley Research Associates (BVRA) on March 23, 2010 under Antiquities Permit 5581 for the County of Zapata. Two arroyo crossings, the site of two proposed lift stations, and the area of previously recorded site 41ZP146 (totaling 0.78 acre) were investigated through a surface inspection, backhoe trenching, and shovel testing. No archaeological sites were found, and no artifacts were collected. Copies of the report are on file at the Texas Historical Commission (THC), Texas Archeological Research Laboratory (TARL), the Texas State Library, J. F. Fontaine & Associates, Inc., the County of Zapata, and BVRA