Search results for "classical"

Women in Aeschylean scene: a linguistic characterization

2021

Este trabalho examina os dispositivos linguísticos por meio dos quais Ésquilo conseguiu apresentar as personagens femininas da Oresteia. A análise é feita após um levantamento das seções recitativas de três tragédias; características fonéticas, morfológicas e sintáticas foram estudadas e comparadas com a linguagem dos personagens masculinos. Os resultados desta pesquisa se ajustam a outras tentativas precedentes de mostrar como a sociolinguística pode explicar o retrato formal dos personagens trágicos e cômicos. This paper examines the linguistic devices by means of which Aeschylus achieved the presentation of the female characters of the Oresteia. The analysis is made after a survey of the…

How Intellectual Capital is Made?

2021

Abstract Worldwide organizations are compelled by global competition to achieve notable, inimitable results. In order to achieve this organizations must differentiate themselves from their competitors by using intangible resources that can get the long-term competitive advantage. This can be accomplished by identifying and managing the important elements of performance more effectively and efficiently. Consequently, organizations have to be aware and understand the connection between valuing intellectual capital and their performance. This article enhances the relationship between intellectual capital indicators and the measures to be taken in order to become strong innovators at european l…

On critical behaviour in systems of Hamiltonian partial differential equations

2013

Abstract We study the critical behaviour of solutions to weakly dispersive Hamiltonian systems considered as perturbations of elliptic and hyperbolic systems of hydrodynamic type with two components. We argue that near the critical point of gradient catastrophe of the dispersionless system, the solutions to a suitable initial value problem for the perturbed equations are approximately described by particular solutions to the Painlevé-I (P $$_I$$ I ) equation or its fourth-order analogue P $$_I^2$$ I 2 . As concrete examples, we discuss nonlinear Schrödinger equations in the semiclassical limit. A numerical study of these cases provides strong evidence in support of the conjecture.

A consistent microscopic theory of collective motion in the framework of an ATDHF approach

1978

Based on merely two assumptions, namely the existence of a collective Hamiltonian and that the collective motion evolves along Slater determinants, we first derive a set of adiabatic time-dependent Hartree-Fock equations (ATDHF) which determine the collective path, the mass and the potential, second give a unique procedure for quantizing the resulting classical collective Hamiltonian, and third explain how to use the collective wavefunctions, which are eigenstates of the quantized Hamiltonian.

Harmonic Analysis of Unstable Systems

2003

A PHENOMENOLOGICAL OPERATOR DESCRIPTION OF INTERACTIONS BETWEEN POPULATIONS WITH APPLICATIONS TO MIGRATION

2013

We adopt an operatorial method based on the so-called creation, annihilation and number operators in the description of different systems in which two populations interact and move in a two-dimensional region. In particular, we discuss diffusion processes modeled by a quadratic hamiltonian. This general procedure will be adopted, in particular, in the description of migration phenomena. With respect to our previous analogous results, we use here fermionic operators since they automatically implement an upper bound for the population densities.

Integration of functions ranging in complex Riesz space and some applications in harmonic analysis

2015

The theory of Henstock—Kurzweil integral is generalized to the case of functions ranging in complex Riesz space R and defined on any zero-dimensional compact Abelian group. The constructed integral is used to solve the problem of recovering the R-valued coefficients of series in systems of characters of these groups by using generalized Fourier formulas.

Exact mechanical models of fractional hereditary materials

2012

Fractional Viscoelasticity is referred to materials, whose constitutive law involves fractional derivatives of order β R such that 0 β 1. In this paper, two mechanical models with stress-strain relation exactly restituting fractional operators, respectively, in ranges 0 β 1 / 2 and 1 / 2 β 1 are presented. It is shown that, in the former case, the mechanical model is described by an ideal indefinite massless viscous fluid resting on a bed of independent springs (Winkler model), while, in the latter case it is a shear-type indefinite cantilever resting on a bed of independent viscous dashpots. The law of variation of all mechanical characteristics is of power-law type, strictly related to th…

D-Pseudo-Bosons, Complex Hermite Polynomials, and Integral Quantization

2015

The D-pseudo-boson formalism is illustrated with two examples. The first one involves deformed complex Hermite polynomials built using finite-dimensional irreducible representations of the group GL(2, C) of invertible 2 × 2 matrices with complex entries. It reveals interesting aspects of these representations. The second example is based on a pseudo-bosonic generalization of operator-valued functions of a complex variable which resolves the identity. We show that such a generalization allows one to obtain a quantum pseudo-bosonic version of the complex plane viewed as the canonical phase space and to understand functions of the pseudo-bosonic operators as the quantized versions of functions…

Products of Bessel functions and associated polynomials

2013

The symbolic method is used to get explicit formulae for the products or powers of Bessel functions and for the relevant integrals.