41,486 research outputs found
Influence of Refractory Periods in the Hopfield model
We study both analytically and numerically the effects of including
refractory periods in the Hopfield model for associative memory. These periods
are introduced in the dynamics of the network as thresholds that depend on the
state of the neuron at the previous time. Both the retrieval properties and the
dynamical behaviour are analyzed.Comment: Revtex, 7 pages, 7 figure
On the finiteness of the noncommutative supersymmetric Maxwell-Chern-Simons theory
Within the superfield approach, we prove the absence of UV/IR mixing in the
three-dimensional noncommutative supersymmetric Maxwell-Chern-Simons theory at
any loop order and demonstrate its finiteness in one, three and higher loop
orders.Comment: 9 pages, 2 figures, revtex
Populações de plantas e adubação orgânica em solo degradado na cultura do amendoim
bitstream/CNPA/19705/1/BOLETIM51.pd
Cultivo In Vitro de sementes de camu-camu sob diferentes concentrações do meio MS de sacarose.
On the induction of the four-dimensional Lorentz-breaking non-Abelian Chern-Simons action
A four-dimensional Lorentz-breaking non-Abelian Chern-Simons like action is
generated as a one-loop perturbative correction via an appropriate
Lorentz-breaking coupling of the non-Abelian gauge field to the spinor field.
This term is shown to be regularization dependent but nevertheless it can be
found unambiguously in different regularization schemes at zero and finite
temperature.Comment: accepted version in Physical Review
Desenvolvimento de um ceifador enleirador de plantas de feijoeiro.
Este trabalho teve o objetivo de desenvolver um ceifador enleirador de plantas de feijoeiro simplificado, de pequeno porte para ser acionado por um trator médio e com capacidade de ceifar as plantas rente ao solo.CONAFE
- …