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  • Differential effects of busulfan on gonadal development in five divergent anuran species.

    International audience; The aim of this paper was to investigate the effects of germ cell depletion on the sexual differentiation of gonads in five anuran species. We used busulfan to eliminate the germ cells. Our results indicate that germ cells are not required for gonadal ridge formation or the development of the undifferentiated gonads. We observed a gradual degeneration of gonads in studied species and the transdifferentiation of the whole gonads into large fat bodies in Xenopus laevis. ...

    New Macrocell Downlink Energy Consumption Minimization with Cell DTx and Power Control

    Power control (PC) and discontinuous transmission (DTx) can reduce the power consumption of a base station (BS). When both are used, there is, for each user, a trade-off between service time and transmit power in order to minimize the energy consumption of the base station. In this paper, we analyse this trade-off and we propose a new efficient algorithm for the computation of the optimal service time and transmit power of all users. We show that in most cases, closed-form expressions can be ...

    Application de la fusion de chemins de données à la synthèse d'architectures parallèles

    Le marché du système embarqué est le théâtre d'une véritable course à tous les niveaux (performance, miniaturisation, consommation électrique). En effet que ce soit pour le multimédia portable (consoles portables, appareils photos et caméras numériques...) ou pour les télécoms (émetteurs-récepteurs et téléphones 3 et bientôt 4G), la très forte concurrence oblige les systèmes à être de plus en plus performants (meilleure résolution, meilleure transmission...) et à avoir une plus grande autonom...

    Exploring the concurrency of an MPEG RVC decoder based on dataflow program analysis

    International audience; This paper presents an in-depth case study on dataflow-based analysis and exploitation of parallelism in the design and implementation of a MPEG reconfigurable video coding decoder. Dataflow descriptions have been used in a wide range of digital signal processing (DSP) applications, such as applications for multimedia processing and wireless communications. Because dataflow models are effective in exposing concurrency and other important forms of high level application...

    Green's Function Retrieval with Absorbing Probes in Reverberating Cavities

    International audience; The cross-correlation of a diffuse wave field converges toward the difference between the anticausal and causal Green's functions between two points. This property has paved the way to passive imaging using ambient noise sources. In this Letter, we investigate Green's function retrieval in electromagnetism. Using a model based on the fluctuation dissipation theorem, we demonstrate theoretically that the cross-correlation function strongly depends on the absorption prop...
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