Results 1  10
of
216
The DileptonProduction Cross Section in Principal Value Resummation
, 1995
"... Using a recent calculation of the perturbative hard part for dilepton production that sums large threshold corrections to all orders in perturbative QCD, we compute the corresponding cross sections. The hard part has been evaluated using principal value resummation and contains all singular momentum ..."
Abstract
 Add to MetaCart
momentumdependent corrections. We also include a resummation of large Sudakov terms, which are independent of parton momenta. We give predictions for the dileptonmass distribution, the rapidity distribution and the rapidityintegrated Kfactor at fixedtarget energies and compare with various
Integral equations with a rapidly oscillating kernel
 J. London Math. Soc
, 1969
"... The solution of the integral equation i f(x; k)v j c(x,y)e\p(ik \xy\)f(y; k)dy = g(x; k),1 < x + 1, l is studied when the real parameter k tends to oo while v remains bounded, v  ^ v0. It is shown that for large k> ko(vo) this equation is nonsingular and that there is a constant A(v0), ..."
Abstract

Cited by 1 (0 self)
 Add to MetaCart
The solution of the integral equation i f(x; k)v j c(x,y)e\p(ik \xy\)f(y; k)dy = g(x; k),1 < x + 1, l is studied when the real parameter k tends to oo while v remains bounded, v  ^ v0. It is shown that for large k> ko(vo) this equation is nonsingular and that there is a constant A(v0
Subresultants and reduced polynomial remainder sequences
 J. ACM
, 1967
"... ABSTRACT. Let 9 be an integral domain, (9(9) the integral domain of polynomials over 9. L~ P, Q E (P(9) with m = deg (P) _> n = deg (Q)> 0. Let M be the matrix whose determina~ defines the resultant of P and Q. Let M~j be the submatrix of M obtained by deleting the la~ j rows of P coefficients ..."
Abstract

Cited by 86 (0 self)
 Add to MetaCart
.c.d, algorithm to be faste than known algorithms by a large factor. When applied to bivariate polynomials, for example this factor grows rapidly with the degree and exceeds 100 in practical cases. 1.
HEAVY QUARK PHOTOPRODUCTION IN PROTONPROTON COLLISIONS
, 2004
"... We calculate the photoproduction of heavy quarks in protonproton collisions at RHIC, Tevatron and LHC energies. The integrated cross section and the rapidity distributions for open charm and bottom production are computed employing sound high energy QCD formalisms. For the linear pQCD approaches we ..."
Abstract
 Add to MetaCart
we consider both the usual collinear factorization and the k⊥factorization formalisms, whereas for the nonlinear QCD (saturation) calculations one considers the GolecBiernatWüsthoff and the IancuItakuraMunier parameterizations for the dipole cross section within the color dipole picture. 1
Polarized Photoproduction of Heavy Quarks in NexttoLeading Order +
, 2000
"... The results of a nexttoleading order calculation of heavy quark production in longitudinally polarized photonnucleon collisions are presented. At c.m. energy √ S = 10 GeV, for γ + p → c + X, cross sections differential in the transverse momentum and rapidity of the charmed quark c and the corresp ..."
Abstract
 Add to MetaCart
and the corresponding asymmetries are presented; also, as functions of √ S, integrated cross sections, Kfactors and the corresponding asymmetries are given. Errors in the asymmetries are estimated and the possibility to distinguish between three scerarios differing essentially in the polarized gluon distribution
Environmental regulation of the fim switch controlling type 1 fimbrial phase variation in Escherichia coli K12: effects of temperature and
, 1993
"... Expression of type 1 fimbriae in Escherichia coli K12 is phase variable and associated with the inversion of a short DNA element (switch). Thefim switch requires eitherfimB (ontooff or offtoon switching) orfimE (ontooff switching only) and is affected by the global regulators leucineresponsi ..."
Abstract

Cited by 53 (4 self)
 Add to MetaCart
responsive regulatory protein (Lrp), integration host factor (IHF), and HNS. Here it is shown that switching frequencies are regulated by both temperature and media and that these effects appear to be independent. fimEpromoted ontooff switching occurs far more rapidly than previously estimated (0.3 per cell per
Integral projection models for species with complex demography.
 American Naturalist
, 2006
"... abstract: Matrix projection models occupy a central role in population and conservation biology. Matrix models divide a population into discrete classes, even if the structuring trait exhibits continuous variation (e.g., body size). The integral projection model (IPM) avoids discrete classes and po ..."
Abstract

Cited by 42 (6 self)
 Add to MetaCart
for (a, k) (a ϩ 1, k) ( a, k) individuals is derived from the probability of survival and the size distribution of survivors. In the notation of table 1, That is, to reach size y from size x, the individual must survive, not flower, and make the size transition. x r y Flowering probability is a factor
Phase behaviour of the restricted
, 2003
"... The phase behaviour of the restricted primitive model (RPM) is studied using a microscopic approach recently developed for the description of phase transitions in binary uid mixtures. For the model we obtain the explicit expression for the functional of the grand partition function. Based on the f ..."
Abstract
 Add to MetaCart
The phase behaviour of the restricted primitive model (RPM) is studied using a microscopic approach recently developed for the description of phase transitions in binary uid mixtures. For the model we obtain the explicit expression for the functional of the grand partition function. Based on the functional we calculate the phase diagram of the RPM in the high temperature approximation (HTA) and then we do this calculation taking into account the terms of the higher orders in the effective Hamiltonian. In both cases the phase diagrams demonstrate the gasliquid (GL) and charge ordering phase instabilities. In the latter case, the obtained value for the GL critical temperature is in good agreement with the MC simulation data whereas the critical density is underestimated. Key words: restricted primitive model, gasliquid critical point, charge ordering phase instability, method of collective variables PACS: 05.70.Fh, 05.70.Jk, 02.70.Rr, 61.20.Qg, 64.70.Fx 1.
Synergistic ParasitePathogen Interactions Mediated by Host Immunity Can Drive the Collapse of Honeybee Colonies
"... The health of the honeybee and, indirectly, global crop production are threatened by several biotic and abiotic factors, which play a poorly defined role in the induction of widespread colony losses. Recent descriptive studies suggest that colony losses are often related to the interaction between p ..."
Abstract

Cited by 6 (0 self)
 Add to MetaCart
regulation of the transcription factor NFkB. The centrality of NFkB in host responses to a range of environmental challenges suggests that this transcription factor can act as a common currency underlying colony collapse that may be triggered by different causes. Our results offer an integrated account for the multifactorial
A fast randomized algorithm for computing a hierarchically semiseparable representation of a matrix
 SIAM J Matrix Anal Appl
"... Abstract. Randomized sampling has recently been proven a highly efficient technique for computing approximate factorizations of matrices that have low numerical rank. This paper describes an extension of such techniques to a wider class of matrices that are not themselves rankdeficient but have off ..."
Abstract

Cited by 9 (1 self)
 Add to MetaCart
. The HSS structure admits algebraic operations (matrixvector multiplications, matrix factorizations, matrix inversion, etc.) to be performed very rapidly, but only once the HSS representation of the matrix has been constructed. How to rapidly compute this representation in the first place is much less
Results 1  10
of
216