6,094 research outputs found
MOF: An R Function to Detect Outlier Microarray
We developed an R function named “microarray outlier filter” (MOF) to assist in the identification of failed arrays. In sorting a group of similar arrays by the likelihood of failure, two statistical indices were employed: the correlation coefficient and the percentage of outlier spots. MOF can be used to monitor the quality of microarray data for both trouble shooting, and to eliminate bad datasets from downstream analysis. The function is freely avaliable at http://www.wriwindber.org/applications/mof/
Glueball Masses from Hamiltonian Lattice QCD
We calculate the masses of the , and glueballs from
QCD in 3+1 dimensions using an eigenvalue equation method for Hamiltonian
lattice QCD developed and described elsewhere by the authors. The mass ratios
become approximately constants in the coupling region ,
from which we estimate and
.Comment: 12 pages, Latex, figures to be sent upon reques
On the Poisson Approximation to Photon Distribution for Faint Lasers
It is proved, that for a certain kind of input distribution, the strongly
binomially attenuated photon number distribution can well be approximated by a
Poisson distribution. This explains why we can adopt poissonian distribution as
the photon number statistics for faint lasers. The error of such an
approximation is quantitatively estimated. Numerical tests are carried out,
which coincide with our theoretical estimations. This work lays a sound
mathematical foundation for the well-known intuitive idea which has been widely
used in quantum cryptography
(1SR,2RS,3SR,5SR,6RS)-6-[(Z)-1-Acetoxy-2-phenylethenyl]-3-ethoxy-2-phenylbicyclo[3.1.0]hexan-1-yl acetate
The molecule of the title compound, C26H28O5, is chiral with five stereogenic centres; however, the centrosymmetric triclinic group gives a racemic crystal. The fused ring system adopta boat conformation in which the cyclopropane ring plane is roughly perpendicular to the styryl group plane, forming a dihedral angle of 74.78 (19)°. The dihedral angle between the two benzene rings is 77.24 (6)°
- …