Search results for "classical"

Lattice distortion of hcp solid helium under pressure

2009

The lattice distortion of hcp solid He under pressure is calculated using semiempirical and first-principle approaches. While three-body forces tend to flatten the lattice at all compressions, the effect of pair forces changes from the flattening at small compression to elongation at large one. At large compressions, the lattice distortion due to the triple forces is more than twice as large as those due to pair forces and the lattice is slightly flattened. First-principles results show that over approximately fivefold compressions higher-order, many-body forces become important.

Heteroclinic contours and self-replicated solitary waves in a reaction–diffusion lattice with complex threshold excitation

2008

Abstract The space–time dynamics of the network system modeling collective behavior of electrically coupled nonlinear cells is investigated. The dynamics of a local cell is described by the FitzHugh–Nagumo system with complex threshold excitation. Heteroclinic orbits defining traveling wave front solutions are investigated in a moving frame system. A heteroclinic contour formed by separatrix manifolds of two saddle-foci is found in the phase space. The existence of such structure indicates the appearance of complex wave patterns in the network. Such solutions have been confirmed and analyzed numerically. Complex homoclinic orbits found in the neighborhood of the heteroclinic contour define …

Kinematic analysis — the sense of shear-sense. Discussion of: ‘Essay Review: Kinematic analysis — pure nonsense or simple nonsense’ by D. Flinn

1995

Calidad de salas para música clásica

2013

Finding a parameter which allows establishing if a concert room is good for orchestral classical music performances or not is one of the main interests in room acoustics. However, rooms are usually characterized by average values of some acoustic parameters. From the optimal values mostly recognized, specialists can consider a room adequate or not for a certain use. In recent works, we have obtain we have obtained a model for classifying a room for classical music performances, from the reverberation time (T30), the lateral energy factor coefficient (LFC) and the listener envelopment (LEV). From this model, we can determine the quality maps for these rooms. In this paper, we show the qualit…

Crossover als Inszenierungsstrategie

2020

Wie grenzt sich klassische Musik von Popmusik ab? Und welche Rolle spielen dabei performative Inszenierungsstrategien? Mit einem praxeologischen Ansatz arbeitet Clara-Franziska Petry Inszenierungsstrategien als konstituierende Prozesse für Musikgenres heraus und entwirft eine Aufführungsanalyse von Stars. Im Zentrum stehen dabei sogenannte Crossover-Phänomene, die Genregrenzen generell aufbrechen. Die Inszenierungstechniken von Authentizität, Virtuosität, Popularität, Kulturalität, Korporalität und Lokalität ermöglichen einen Vergleich von E- und U-Musik, der nicht auf der Ebene des musikalischen Materials, sondern auf performativer Ebene basiert.

Polynomials generated by linear operators

2004

We study the class of Banach algebra-valued n n -homogeneous polynomials generated by the n t h n^{th} powers of linear operators. We compare it with the finite type polynomials. We introduce a topology w E F w_{EF} on E , E, similar to the weak topology, to clarify the features of these polynomials.

On an Inequality for Trigonometric Polynomials In Several Variables

1990

Publisher Summary This chapter presents trigonometric polynomials in n variables. Using the methods of approximation theory, an inequality can be extended to almost periodic functions and to still more general classes of functions as in the case for Bohr's inequality. However, no analogous result exists in the case of two variables. For the solution of problems containing small divisors, the estimate has to be completed by theorems concerning the best approximation of holomorphic functions by trigonometric polynomials in polystrips. The chapter also presents equations to provide an estimate for a differential operator.

Complex Numbers and Polynomials

2016

As mentioned in Chap. 1, for a given set and an operator applied to its elements, if the result of the operation is still an element of the set regardless of the input of the operator, then the set is said closed with respect to that operator.

On the zeros of Jacobi polynomials

1994

Ricordo di Rudolf Kassel (1926-2020)

2020

Life Rudolph Kassel, the late great biblical briefly describes its written better reviewed.