46 research outputs found
Analytical and numerical investigation of escape rate for a noise driven bath
We consider a system-reservoir model where the reservoir is modulated by an
external noise. Both the internal noise of the reservoir and the external noise
are stationary, Gaussian and are characterized by arbitrary decaying
correlation functions. Based on a relation between the dissipation of the
system and the response function of the reservoir driven by external noise we
numerically examine the model using a full bistable potential to show that one
can recover the turn-over features of the usual Kramers' dynamics when the
external noise modulates the reservoir rather than the system directly. We
derive the generalized Kramers' rate for this nonequilibrium open system. The
theoretical results are verified by numerical simulation.Comment: Revtex, 25 pages, 5 figures. To appear in Phys. Rev.
Partitioning the Heritability of Tourette Syndrome and Obsessive Compulsive Disorder Reveals Differences in Genetic Architecture
The direct estimation of heritability from genome-wide common variant data as implemented in the program Genome-wide Complex Trait Analysis (GCTA) has provided a means to quantify heritability attributable to all interrogated variants. We have quantified the variance in liability to disease explained
Carcass merit project: development of EPDS and genetic marker validation
Carcass and Warner-Bratzler shear force
data on strip loin steaks have been obtained
on over 4,200 cattle from contemporary
progeny groups from the most widely used
sires in 15 beef cattle breed associations (16
breeds). Trained sensory panel evaluations
have been conducted on over 1,500 strip loin
steaks from a sample of contemporary
progeny groups from sires included in the
QTL (quantitative trait loci) validation
component of the project. One breed association
has published Warner-Bratzler shear
force Expected Progeny Differences (EPDs)
for 57 sires of two breeds. DNA analyses
and screening have been completed for 11
QTL on eight sires from several breeds.
EPDs for carcass traits, Warner-Bratzler
shear force, and sensory panel traits may be
completed for several breeds within the year
2001. Information from this project should
allow seedstock producers to improve carcass
traits, tenderness, and other palatability
traits through classical genetic selection or
through DNA marker-assisted selection