Thermodynamics of a Peyrard-Bishop One-Dimensional Lattice with On-site Hump Potential

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Localization and delocalization of energy in a Peyrard-Bishop chain

This paper studies energy localization conditions in lattices of the type proposed by Peyrard and Bishop. Homogeneous and inhomogeneous lattices are analyzed and the role of interfaces in the latter is emphasized. Simulations allowed us to identify critical energy values for the existence of localization. After a certain energy value, it is possible to observe the loss of energy localization along the chain.

Pacto Social e Luta Operária em Schio

O presente estudo é parte de um trabalho mais amplo, o qual estuda o processo de formação e conscientização do operariado da cidade vêneta de Schio e da greve traumática que levou centenas de seus participantes a imigrar para a região de Caxias (RS), onde guardaram a lembrança de suas lutas e aplicaram sua experiência profissional.

Converging frontiers: Elizabeth Bishop's North and South'

This paper examines Elizabeth Bishop's evolving social views, as revealed through her poetry. A selection of poems, written before and after she moved to Brazil in 1951, are compared so as to disclose changes in her personal expression and in her approaches to issues of human interaction and social organization.

Energy localization in the Peyrard-Bishop DNA model

We study energy localization on the oscillator chain proposed by Peyrard and Bishop to model DNA. We search numerically for conditions with initial energy in a small subgroup of consecutive oscillators of a finite chain and such that the oscillation amplitude is small outside this subgroup on a long time scale. We use a localization criterion based on the information entropy and verify numerically that such localized excitations exist when the nonlinear dynamics of the subgroup oscillates with a frequency inside the reactive band of the linear chain. We predict a mimium value for the Morse parameter (mu>2.25) (the only parameter of our normalized model), in agreement with the numerical calculations (an estimate for the biological value is mu=6.3). For supercritical masses, we use canonical perturbation theory to expand the frequencies of the subgroup and we calculate an energy threshold in agreement with the numerical calculations.

Formação e estabilidade de Breathers no modelo de Peyrard-Bishop para o DNA

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da dinâmica do modelo de Peyrard-Bishop não homogêneo para o DNA

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Controversia tenutasi a Tolosa alla presenza dell'antipapa Benedetto XIII fra Girolamo di Santa Fè ed alcuni rabbini della Spagna

studj di M. Soave

I banchieri Ebrei in Firenze nel secolo XV e il Monte di Pietà fondato da Girolamo Savonarola : appunti di storia economica con append. di documenti

Marino Ciardini