Results 271 to 280 of about 14,713,178 (309)

G-matrix effective interaction with the paris potential

Nuclear Physics A, 1985
Abstract An effective interaction is derived by fitting the oscillator matrix elements of the sum of the OBEP functions to the G -matrix elements derived from the Paris nucleon-nucleon interaction. The functional form, the mass dependence and the ambiguities of the effective interaction are discussed.
A. Hosaka, K.-I. Kubo, H. Toki
openaire   +1 more source

G-matrix interaction in the nuclear 1p shell

Nuclear Physics A, 1967
Abstract A G-matrix interaction applicable to nuclear states of the configuration (1s)4(1p)A−4 is obtained by fitting the position of energy levels in the 1p shell. In addition to a simple two-body potential the three-body vector force previously shown to arise from second-order effects of the tensor force is included.
Paul Goldhammer, J.Roger Hill, Jack Nachamkin   +2 more
openaire   +1 more source

On the Realization of an nth-Order G Matrix

IRE Transactions on Circuit Theory, 1961
Synthesis of a single-element-kind network from a given short-circuit parameter matrix of order n, leading to a topological configuration involving n + 1 nodes, is now known, having been given by the author and several others working on this problem almost simultaneously. This form of realization is, however, not completely general, and therefore it is
openaire   +1 more source

The evolution of the G matrix: selection or drift?

Heredity, 2000
The evolution of quantitative characters can be described by the equation Deltaz=GP-1S where Deltaz is the vector of mean responses, G is the matrix of additive genetic variances and covariances, P is the matrix of phenotypic variances and covariances and S is the vector of selection differentials.
openaire   +2 more sources

Comparative quantitative genetics: evolution of the G matrix

Trends in Ecology & Evolution, 2002
Abstract Quantitative genetics provides one of the most promising frameworks with which to unify the fields of macroevolution and microevolution. The genetic variance–covariance matrix ( G ) is crucial to quantitative genetic predictions about macroevolution. In spite of years of study, we still know little about how G evolves.
Scott J. Steppan, Patrick C. Phillips, David Houle   +2 more
openaire   +1 more source

g-Matrix Based on Configuration Interaction and Stone's Perturbation Theory

Journal of Magnetic Resonance, 1999
Stone's formula, which has usually been applied to the calculation of the g-matrix, is based on a single-configuration treatment. Here a limited configuration interaction is included to obtain the expressions of the principal g values for an orbitally nondegenerate molecule with spin S = 12. Copyright 1999 Academic Press.
, Li, , Hong, , Cao, , Kang, , Liu
openaire   +2 more sources

Environmental effects on the structure of the G-matrix.

Evolution; international journal of organic evolution, 2016
Genetic correlations between traits determine the multivariate response to selection in the short term, and thereby play a causal role in evolutionary change. Although individual studies have documented environmentally induced changes in genetic correlations, the nature and extent of environmental effects on multivariate genetic architecture across ...
Corlett W, Wood, Edmund D, Brodie
openaire   +1 more source

Possible consequences of genes of major effect: transient changes in the G-matrix

Genetica, 2001
Understanding the process of evolutionary divergence requires knowledge of the strength, form, and targets of selection, as well as the genetic architecture of the divergent traits. Quantitative genetic approaches to understanding multivariate selection and genetic response to selection have proven to be powerful tools in this endeavor, particularly ...
A F, Agrawal, E D, Brodie, L H, Rieseberg   +2 more
openaire   +2 more sources

G-matrix elements with effective masses for mesons and nucleons

Nuclear Physics A, 1991
Abstract G-matrix elements for finite nuclei are calculated using effective masses for mesons and nucleons at finite density, i.e., those in nuclear medium. We find that the central G-matrix elements are very sensitive to masses of the sigma and omega.
A. Hosaka, H. Toki
openaire   +1 more source

Brueckner G matrix for a planar slab of nuclear matter

Physics of Atomic Nuclei, 2001
The equation for the Brueckner G matrix is investigated for planar-slab geometry. A method for calculating the G matrix for a planar slab of nuclear matter is developed for a separable form of NN interaction. Actually, the separable version of the Paris NN potential is used. The singlet 1S0 and the triplet 3S1–3D1 channel are considered.
M. Baldo, U. Lombardo, É. E. Saperstein, M. V. Zverev   +3 more
openaire   +1 more source