Les algorithmes d’apprentissage non-supervisé, et plus particulièrement les algorithmes de segmentation ou de factorisation, peuvent jouer un rôle central dans l’exploitation des images spectrales pour lesquelles chaque pixel est caractérisé par un spectre complet. L’utilisation de la ...
The red squirrel in Britain has been under heavy pressure for centuries, particularly so after the introduction of the invasive grey squirrel in the late 1800s, and is now extinct in most of its former range. But already since the late 1700s, people have tried to counter the decline by bringing ...
The Department of Early Prehistory and Quaternary Ecology of the University of Tübingen is offering two Ph.D. fellowships in the field of Paleolithic archaeology. The research should be related to the ca. 300,000 years old site complex of Schöningen. The place of research, depending on the ...
Cette thèse a pour objectif de fournir des reconstitutions à haute résolution des changements hydroclimatiques et de la végétation ayant affecté le bassin amazonien au cours des 200 000 dernières années. Pour ce faire, elle utilise des biomarqueurs moléculaires et leurs compositions isotopiques ...
Over the last century, the High Arctic has experienced rapid warming, with the Arctic warming four times as fast the global average since 1979. This has resulted in major impacts to Arctic ecosystems. Lakes are especially sensitive sentinels of such environmental change, responding to climate ...
