Results 1 to 10 of about 12,257,891 (126)

Consistent estimation of high-dimensional factor models when the factor number is over-estimated [PDF]

open access: yes, 2020
A high-dimensional $r$-factor model for an $n$-dimensional vector time series is characterised by the presence of a large eigengap (increasing with $n$) between the $r$-th and the $(r+1)$-th largest eigenvalues of the covariance matrix.
Barigozzi, Matteo, Cho, Haeran
core   +4 more sources

(Biphenyl-2-yl)bromidobis(2-methyltetrahydrofuran-[kappa]O)magnesium(II) [PDF]

open access: yes, 2009
In the title Grignard reagent, [MgBr(C12H9)(C5H10O)2], the Mg centre adopts a distorted tetrahedral MgCO2Br arrangement. The dihedral angle between the two aromatic rings of the biphenyl residue is 44.00 (14)°. Each molecule incorporates one R- and one S-
Simon Nordschild   +5 more
core   +2 more sources

Structural, item, and test generalizability of the psychopathology checklist - revised to offenders with intellectual disabilities [PDF]

open access: yes, 2010
The Psychopathy Checklist–Revised (PCL-R) is the most widely used measure of psychopathy in forensic clinical practice, but the generalizability of the measure to offenders with intellectual disabilities (ID) has not been clearly established.
Alexander, R.   +26 more
core   +1 more source

R Factors in Hospital Infection [PDF]

open access: yesBMJ, 1972
In order to assess the clinical importance of R factors 524 "coliform" infections were studied in a general hospital. Of these, 95 were caused by Pseudomonas aeruginosa. Among the remaining 429, 43% were caused by drug-resistant enterobacteria; resistance was frequently multiple and determined by transmissible R factors.
F M, Anderson, N, Datta, E J, Shaw
openaire   +2 more sources

Characteristics of E. coli K12 strains carrying both an F prime and an R factor [PDF]

open access: yes, 1970
The interrelationship between an F prime and an F-like or I-like R factor was studied in Escherichia coli K 12 strains carrying both. The donorability of such strains suggested that these plasmids were transferred independently by their own transfer ...
Finnegan, David, WILLETTS, N S
core   +1 more source

Approximability of Connected Factors [PDF]

open access: yes, 2013
Finding a d-regular spanning subgraph (or d-factor) of a graph is easy by Tutte's reduction to the matching problem. By the same reduction, it is easy to find a minimal or maximal d-factor of a graph. However, if we require that the d-factor is connected,
A.E. Baburin   +12 more
core   +3 more sources

Host Ranges of R Factors [PDF]

open access: yesJournal of General Microbiology, 1972
SUMMARY: All R factors so far described can be transmitted to Escherichia coli. F-like R factors are transmissible to the Proteus group but not to the Pseudomonadaceae. Among fi - R factors, I-like plasmids are not transferable to Proteus although they mediate conjugation, allowing transfer of other plasmids to this group. They are not transmissible to
N, Datta, R W, Hedges
openaire   +2 more sources

On Modified Gravity [PDF]

open access: yes, 2012
We consider some aspects of nonlocal modified gravity, where nonlocality is of the type $R \mathcal{F}(\Box) R$. In particular, using ansatz of the form $\Box R = c R^\gamma,$ we find a few $R(t)$ solutions for the spatially flat FLRW metric.
A.S. Koshelev   +7 more
core   +1 more source

Symplectic embeddings of polydisks [PDF]

open access: yes, 2007
If P is a polydisk with radii R_1 < ... < R_n and P' is a polydisk with radii R'_1 < ... < R'_n, then we construct a symplectic embedding from P into P' provided that C(n) R_1 < R'_1 and C(n) R_1 ... R_n < C(n) R'_1 ... R'_n.
Guth, Larry
core   +1 more source

R factors from Providence [PDF]

open access: yesMicrobiology, 2000
Of more than 100 R factors transferred from naturally occurring Providence strains, approximately 60 % belonged to the A-C compatibility complex. Plasmids of groups F1, J, N, P and X, and the prototype of a new group G were also transferred. The Providence R factor set differs from those of Proteus rettgeri and P.
openaire   +2 more sources

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