Search results for "symbolic"
showing 10 items of 449 documents
A new method for computing one-loop integrals
1994
We present a new program package for calculating one-loop Feynman integrals, based on a new method avoiding Feynman parametrization and the contraction due to Passarino and Veltman. The package is calculating one-, two- and three-point functions both algebraically and numerically to all tensor cases. This program is written as a package for Maple. An additional Mathematica version is planned later.
The Use of and Commitment to Goods
2004
In social theory, goods have usually not been included in the social world. However, in the sociology of consumption, they have been seen as mediating social relations and offering opportunities to make social distinctions. It is precisely the symbolic aspect of goods that makes this possible. In helping to make these distinctions, goods are only given a passive role in our lives. They only get to function as markers of social differences, tastes, and so on. However, the use value of goods cannot be reduced to their symbolic aspect. Generally speaking, the use value also has two other aspects which I will call the ‘functionality’ and ‘productivity’ of goods. I am going to argue that becaus…
Museoparks and re‐enchantment of the museum visits: an approach centred on visual ethnology
2012
PurposeThe purpose of this paper is to identify the structural dimensions of a new museal offer, museoparks, which use edutainment and more generally re‐enchantment strategies.Design/methodology/approachTo bring out the symbolic dimensions specific to these cultural sites, the methodology used is based on the analysis of photographic media.FindingsThe analysis reveals four main symbolic dimensions structuring these hybrid cultural offers: spectacularization, immersive character, ritualized character, and very intense merchandizing of the experience.Research limitations/implicationsThis analysis allows us to update a hybrid, complex and re‐sized form of cultural experience that goes beyond t…
Prevision model and empirical test of box office results for sequels
2021
International audience; As studios release an increasing number of movie sequels, scholars have begun to examine this strategic choice. Prior studies use standard models of box office performance to evaluate sequels’ performance and have mainly compared the box office results of the original movie with those of its sequel. However, sequels hold a unique position in the motion picture market since they are strongly associated with the original movie. Using the accessibility-diagnosticity framework, this research investigates the drivers behind the success of sequels and examines specifically the original movie’s impact through the role of reviews. The results – from 232 movies (116 original …
Effects of message appeal and service type in CSR communication strategies
2015
Abstract Studies highlight the importance of corporate social responsibility (CSR) for companies' stakeholders. Consumers, however, are often unaware of such initiatives. Understanding how to effectively communicate socially responsible initiatives is an important challenge for both researchers and managers, who invest considerable resources in CSR initiatives. This study examines consumers' responses to two types of CSR initiatives (environment-related and employee-based) using two types of message appeals (emotional and rational) across two service types (hedonic and utilitarian). Responses provide data on consumers' awareness of CSR initiatives, attitudes toward the company, perceived co…
Transmission Efficiency of the SAGE Spectrometer Using GEANT4
2013
The new SAGE spectrometer allows simultaneous electron and γ-ray in-beam studies of heavy nuclei. A comprehensive GEANT4 simulation suite has been created for the SAGE spectrometer. This includes both the silicon detectors for electron detection and the germanium detectors for γ-ray detection. The simulation can be used for a wide variety of tests with the aim of better understanding the behaviour of SAGE. A number of aspects of electron transmission are presented here.
COMPUTATION OF LOCAL VOLATILITIES FROM REGULARIZED DUPIRE EQUATIONS
2005
We propose a new method to calibrate the local volatility function of an asset from observed option prices of the underlying. Our method is initialized with a preprocessing step in which the given data are smoothened using cubic splines before they are differentiated numerically. In a second step the Dupire equation is rewritten as a linear equation for a rational expression of the local volatility. This equation is solved with Tikhonov regularization, using some discrete gradient approximation as penalty term. We show that this procedure yields local volatilities which appear to be qualitatively correct.
Error bounds for a convexity-preserving interpolation and its limit function
2008
AbstractError bounds between a nonlinear interpolation and the limit function of its associated subdivision scheme are estimated. The bounds can be evaluated without recursive subdivision. We show that this interpolation is convexity preserving, as its associated subdivision scheme. Finally, some numerical experiments are presented.
A Projected Algebraic Multigrid Method for Linear Complementarity Problems
2011
We present an algebraic version of an iterative multigrid method for obstacle problems, called projected algebraic multigrid (PAMG) here. We show that classical AMG algorithms can easily be extended to deal with this kind of problem. This paves the way for efficient multigrid solution of obstacle problems with partial differential equations arising, for example, in financial engineering.
Combinatorial Gray codes for classes of pattern avoiding permutations
2007
The past decade has seen a flurry of research into pattern avoiding permutations but little of it is concerned with their exhaustive generation. Many applications call for exhaustive generation of permutations subject to various constraints or imposing a particular generating order. In this paper we present generating algorithms and combinatorial Gray codes for several families of pattern avoiding permutations. Among the families under consideration are those counted by Catalan, Schr\"oder, Pell, even index Fibonacci numbers and the central binomial coefficients. Consequently, this provides Gray codes for $\s_n(\tau)$ for all $\tau\in \s_3$ and the obtained Gray codes have distances 4 and 5.