Search results for "TACL"

La Consommation de Spectacles Sportifs : Comportements Observés et Variables Explicatives

2001

Broken ray transform on a Riemann surface with a convex obstacle

2014

We consider the broken ray transform on Riemann surfaces in the presence of an obstacle, following earlier work of Mukhometov. If the surface has nonpositive curvature and the obstacle is strictly convex, we show that a function is determined by its integrals over broken geodesic rays that reflect on the boundary of the obstacle. Our proof is based on a Pestov identity with boundary terms, and it involves Jacobi fields on broken rays. We also discuss applications of the broken ray transform.

Micro- to macro-scale internal structures, diagenesis and petrophysical evolution of injectite networks in the Vocontian Basin (France): implications…

2015

27 pages; International audience; This study discusses the characteristics of two Lower Cretaceous injectite networks in the Vocontian Basin (SE France) using combined structural, sedimentary, diagenetic, and petrophysical analyses. Internal structures, at both the macro- and micro-scale, and diagenetic phases characterising these injectite networks have been described. Simultaneously, precementation porosity values were estimated and parameters controlling the geographical distributions of these values were analysed and statistically tested. All of the data were integrated so as to reconstruct the spatial evolution of the porosity from the time of injection to modern times through five maj…

Stress induced grain boundary migration in very soluble brittle salt

1999

Abstract Grain boundary migration (GBM) was studied in-situ at room temperature, atmospheric pressure and an applied diffmfwerential stress of ∼9.5 MPa under the optical microscope, in a wet aggregate of an elastic-brittle salt (sodium chlorate). The aggregate was previously deformed predominantly by a combination of grain boundary sliding, pressure solution and cataclastic solution creep. After deformation, but when the sample was still under differential stress, undeformed, fracture-free grains were observed to grow at the cost of deformed, intensely fractured grains. GMB rates typically fell in the range 2--10 μm/day. GBM took place only as long as the sample was under stress. Boundaries…

Lope y la tramoya de la corte: entre tradición e innovación

2013

El trabajo se centra en el periodo de actividad de Lope de Vega como dramaturgo para reconstruir, con la reunión de datos conocidos y los aportados por algunos documentos de archivo, la actividad espectacular y festiva vinculada a la corte de los Austrias. El artículo hace balance de esa tradición espectacular, sobre la que cada vez se tiene mayor información, porque es ese telón de fondo el que permite entender y contextualizar cabalmente los grandes dramas-espectáculo escritos por Lope desde fechas tempranas y hasta poco antes de su muerte, y comprender las trasformaciones que supo imprimir a esa tradición. This paper focuses on the period of Lope de Vega’s activity as a playwright in ord…

Quels impacts des mutations digitales sur le secteur du spectacle vivant ? État des lieux des recherches scientifiques

2023

Novel triplet of flexor muscles in the posterior tentacles of the snail, Helix pomatia.

2012

The anatomy of three novel flexor muscles in the posterior tentacles of Helix pomatia is described. The muscles originate from the ventral side of the sensory pad and are anchored at different sites in the base of the tentacle stem. The muscles span the tentacle and always take the length of the stem which depends on the rate of tentacle protrusion indicating that the muscles are both contractile and extremely stretchable. The three anchoring points at the base of the stem determine three space axes along which the contraction of a muscle or the synchronous contraction of the muscles can move the tentacle in space.

Chances for Parliamentary Politics Today

2018

In the final chapter, the contemporary situation of parliamentary politics is discussed. The chances and limits of the parliamentary ideal type are situated to the current horizons of Western European politics. The main point is to emphasise the priority of dissensus and debate over outcomes as the main advantage of parliamentary-style politics over the narrowly teleological forms of human activities. With different thought experiments we could imagine to parliamentarise procedures and practices. These themes are discussed in terms of Perelmanian conceptual pairs of rhetoric, from a perspective that first presents the obstacle to parliamentarisation and discusses chances for a revaluation i…

Volatility Weighting over Time in the Presence of Transaction Costs

2019

Numerous empirical studies demonstrate the superiority of dynamic strategies with a volatility-weighting-over-time mechanism. These strategies control the portfolio risk over time by adjusting the risk exposure according to updated volatility forecasts. Yet, to reap all the benefits promised by volatility weighting over time, the composition of the active portfolio must be revised rather frequently. Transaction costs represent a serious obstacle to benefiting from this dynamic risk control technique. In this article, we propose a modified volatility-weighting strategy that allows one to reduce dramatically the amount of trading costs. The empirical evidence shows that the advantages of the …

Research Regarding Physical Testing in the Military Pentathlon at the 50 M Race with Obstacles

2019

Abstract The research started from the necessity of finding new ways to physical test the military students that are part of the military pentathlon 50 m race with obstacles team. The research methods used was the experiment method, using two groups: the first group was the control group and the second the experiment group. The experiment consisted in testing the students at: 50 m speed running, 800 m resistance running, push-ups, and specific testing like: 50 m swimming with obstacles, 8 km run in varied terrain. The results of our investigation showed that calculation of the statistical significance of the differences between the averages of the two samples showed significant values at p&…