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Les interactions nappe-riviA]re sont un sujet de recherche particuliA]rement complexe en hydrogA(c)ologie. Les processus d'A(c)changes entre les eaux de surface et les eaux souterraines sont thA(c)oriquement connus mais restent difficilement mesurables. De nombreuses mA(c)thodes ont A(c)tA(c) dA(c)veloppA(c)es pour analyser ces A(c)changes. Le suivit de l'A(c)volution des signaux des traceurs naturels que sont la tempA(c)rature et la conductivitA(c) A(c)lectrique offre des rA(c)sultats pertinents tout en A(c)tant techniquement lA(c)ger A mettre en place. Cette mA(c)thode est testA(c)e sur un...

Making the most ef?cient use of computer systems has rapidly become a leading topic of interest for the computer industry and its customers alike. However, the focus of these discussions is often on single, isolated, and speci?c architectural and technological improvements for power reduction and conservation, while ignoring the fact that power ef?ciency as a ratio of performance to power consumption is equally in?uenced by performance improvements and architectural power red- tion. Furthermore, ef?ciency can be in?uenced on all levels of today's system hi- archies from single cores all the...