87,512 research outputs found
Terricolous Spiders (Araneae) of Insecticide-Treated Spruce-Fir Forests in West-Central Maine
Spiders of 12 families, 42 genera, and at least 62 species were captured in linear-pitfall traps placed in insecticide-treated (Sevin-4-Oil®, Dipel 4L ®, Thuricide 16B®) and untreated spruce-fIr forests of west-central Maine. Species richness per family ranged from 1 (Theridiidae, Araneidae, Salticidae) to 19 (Erigonidae). Most trapped species were web-spinners (67.2%); most trapped individuals were hunters (75.2%). Lycosidae accounted for 66.1 % of all (n = 887) captured spiders. Total trapped spiders varied among insecticide treatments, sampling dates, and study sites. However, comparison of mean prespray and postspray trap catches indicated no significant reduction (ANOVA, ANCOVA, P 0.05) in terricolous spiders following insecticide treatments. Increases in spider abundance during postspray sampling periods may have masked detection of treatment effects
Proton Decay and the Planck Scale
Even without grand unification, proton decay can be a powerful probe of
physics at the highest energy scales. Supersymmetric theories with conserved
R-parity contain Planck-suppressed dimension 5 operators that give important
contributions to nucleon decay. These operators are likely controlled by flavor
physics, which means current and near future proton decay experiments might
yield clues about the fermion mass spectrum. I present a thorough analysis of
nucleon partial lifetimes in supersymmetric one-flavon Froggatt-Nielsen models
with a single U(1)_X family symmetry which is responsible for the fermionic
mass spectrum as well as forbidding R-parity violating interactions. Many of
the models naturally lead to nucleon decay near present limits without any
reference to grand unification.Comment: 6 pages, 3 figures, talk given at PASCOS '04, to appear in the
proceeding
A Cubical Flat Torus Theorem and the Bounded Packing Property
We prove the bounded packing property for any abelian subgroup of a group
acting properly and cocompactly on a CAT(0) cube complex. A main ingredient of
the proof is a cubical flat torus theorem. This ingredient is also used to show
that central HNN extensions of maximal free-abelian subgroups of compact
special groups are virtually special, and to produce various examples of groups
that are not cocompactly cubulated.Comment: 14 pages, 2 figures, submitted May 2015 Minor corrections and swapped
sections 2 and 3 Corrected an unfortunate typo in Theorem 2.1 - the
hypothesis that the cube complex be finite dimensional has now been adde
Design, Financial Trends and On-Field Success
Since college athletic departments are considered non-profit organizations and it’s expected they spend revenue in support of their overall mission which can be considered as achieving on-field success. Previous literature has uncovered multiple relationships between expenditures and revenue in comparison to on-field success. The common theory is that athletic programs must increase spending to increase wins, and increase wins to increase revenue. The purpose of our research is to explore financial trends within the rank based competition structure of NCAA Division I college football’s top 25 football teams in the 2012-2015 seasons. We will also acknowledge the effects of the transition from the former Bowl Championship Series (BCS) post season structure in 2012 and 2013 in comparison to the 2014 and 2015 seasons under the playoff structure that allows the top four teams to compete for the spotlight in an additional national championship bowl game. Results from our study indicate that total expenditures are the strongest indicator of on-field success, or the final rank of an institution and supports findings in our literature that explores the financial trends within the highest level of competition within Division I College football\u27s rank based design
Against Molinism: A Refutation of William Lane Craig\u27s Molinism
The debate concerning human free will, human moral culpability, and God’s sovereignty has raged for millennia within the Christian church. The recent rediscovery of the medieval philosophical theory known as Molinism brought Molinism to the fore of this debate. One major contemporary proponent of Molinism is William Lane Craig, the famous philosopher, theologian, and apologist. The purpose of this essay is to present a refutation of Craig\u27s brand of Molinism by arguing that Craig’s Molinism relies on a flawed view of human freedom and further fails to reconcile this flawed view of human freedom with God’s sovereignty
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