Résultats de recherche

Résumé Several studies have now shown at different spatial scale that certain species of the wild bee fauna are in decline in Europe. In response, some European countries and the European commission are implementing action plans to mitigate negative …

Conférence élaborée avec Helge Bruelheide (German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany). Résumé In Germany (Central Europe) biodiversity has changed profoundly with respect to composition and spatial …

Résumé Resurveys of historical vegetation plots are invaluable to document patterns of change in community composition and diversity. They are also useful to better understand impacts of multiple and interacting global-change drivers. The relevance of …

Résumé Baseline surveys are essential to assess long-term shifts in plant communities. In the early 2000s, we re-surveyed 293   sites of six   forest types in Wisconsin, USA. Data from these sites, first surveyed in the 1950s, allowed us to infer …

Résumé The Danish monitoring program NOVANA has recorded the community composition of higher plants and selected soil chemical variable in terrestrial habitats since 2004. The monitoring program was developed as a response to the EU habitat directive and …

Résumé Standardised long-term biodiversity monitoring schemes, based on repeated visits to fixed sites, offer the possibility of comparing biodiversity in space and time, while avoiding most of the biases associated with opportunistic data, particularly …

Résumé Switzerland's biodiversity is systematically surveyed by an array of programs, each designed to cover distinct facets of biodiversity across spatial scales as well as policy evaluation needs. Although each initiative has discrete aims, …

Résumé Long-term monitoring is a crucial tool for anticipating population collapse, which is particularly important in the case of priority species (rare, endangered or threatened). The 'Adopt a plant' programme was launched in 2013 as a collaborative …

Résumé Volunteer-based plant monitoring in the UK has focused historically on distribution mapping, with less emphasis on the collection of data on plant communities and habitats. However, abundance monitoring for other groups of organisms is …

Le jeudi 25 avril dernier, Entre-Temps organisait deux tables rondes au Collège de France dans le cadre de la commémoration des 30 ans du génocide des Tutsi au Rwanda. L'occasion de réfléchir collectivement aux expériences faites et vécues de ce passé …

Résumé Les activités physiques, aujourd'hui considérées comme faisant partie de nos loisirs, ainsi que les sports dans lesquels certains individus démontrent des capacités exceptionnelles, étaient autrefois des pratiques quotidiennes et vitales pour nos …

Résumé L’importance du corps dans les recherches d’Étienne-Jules Marey peut sembler une évidence : l’homme qui marche, le cheval au trot, l’oiseau et l’insecte en vol sont des objets privilégiés de la méthode graphique et de la chronophotographie. Au-delà …

Résumé Tracing back to the four interlocked ibexes walking in a circle that features the so-called “Hunt Patera” (in the Louvre Museum) from the temple of Baal at Ugarit, Syria, dated to the 14 th -13 th  century BCE, this lecture discusses the original …

Résumé In the 7 th  century, the Tibetans began to dominate a broad territory that extended across the Qinghai-Tibet plateau. It was suggested that some ideas and practices of their indigenous Bon religion were acquired from western Tibet, which was once …

Résumé This lecture discussed the often-labeled Sasanian or Sogdian silk textiles featuring beaded roundels enclosing animals which became very popular across Eurasia for the entire Middle Ages. Although some animals, such as the duck, ram, or flying …

Adam Jaffe , Moderator Manuel Trajtenberg Antonin Bergeaud Kevin Bryan Reinhilde Veugelers …

Bronwyn Hall , “Explorations of cumulative advantage using data on French physicists” (Co-author: J. Mairesse) Discussant: Francesco Lissoni Ecouter l'audio Carolyn Stein , “The Wandering Scholars: Understanding the Heterogeneity of University …

Introduction: Adam Jaffe Speaker: Kathryn Shaw …

Dominique Guellec , “NPL vs. NLP: Analysing the links between science and technology using citations and semantics” (Co-authors: M. Amdaoud, J. Liu, W. Mesheba, J. Quemener, D. Sapinho, J-M. Deltorn) Discussant: Manuel Trajtenberg Ecouter l'audio Dietmar …

Ariel Stern , “Who Drives Digital Innovation: Evidence from the U.S. Medical Device Industry” (Co-authors: A. Everhart, C. Foroughi) Discussant: Iain Cockburn Ecouter l'audio Josh Lerner , “The Diffusion of New Technologies” (Co-authors: A. Kalyani, N. …

Introduction: Lee Branstetter Speaker: Robert Gordon …

Shane Greenstein , “New Economic Forces Behind the Value Distribution of Innovation” (Co-authors: T. Bresnahan, P-L. Yin) Discussant: Lee Branstetter Ecouter l'audio Xavier Jaravel , “Social Push and the Direction of Innovation” (Co-authors: E. Einio, J. …