Buscar
Mostrando ítems 21-30 de 529
Massive spin-2 particle from a rank-2 tensor
(2013-06-19)
Here we obtain all possible second-order theories for a rank-2 tensor which describe a massive spin-2 particle. We start with a general second-order Lagrangian with ten real parameters. The absence of lower-spin modes and ...
NDIM achievements: massive, arbitrary tensor rank and N-loop insertions in Feynman integrals
(Iop Publishing Ltd, 2000-05-19)
One of the main difficulties in studying quantum field theory, in the perturbative regime, is the calculation of D-dimensional Feynman integrals. In general, one introduces the so-called Feynman parameters and, associated ...
Parâmetros genéticos para idade ao primeiro parto estimados por diferentes modelos para rebanhos da raça Nelore
(Universidade Federal de Santa Maria (UFSM), 2008-04-01)
Com objetivo de estimar parâmetros genéticos e estudar a utilização de diferentes efeitos em avaliações genéticas para idade ao primeiro parto (IPP) por diferentes modelos, foram utilizados registros de IPP de animais da ...
Applying information retrieval techniques to detect duplicates and to rank references in the preliminary phases of systematic literature reviews
(Centro Latinoamericano de Estudios en Informática, 2017)
Comparison of factor-analytic and reduced rank models for test-day milk yield in Gyr dairy cattle (Bos indicus)
(2013-09-27)
We analyzed 46,161 monthly test-day records of milk production from 7453 first lactations of crossbred dairy Gyr (Bos indicus) x Holstein cows. The following seven models were compared: standard multivariate model (M10), ...
Eye color as an indicator of social rank in the fish Nile tilapia
(Associação Brasileira de Divulgação Científica (ABRADIC), 2003-12-01)
We investigated the association of eye color with the dominant-subordinate relationship in the fish Nile tilapia, Oreochromis niloticus. Eye color pattern was also examined in relation to the intensity of attacks. We paired ...