Suchergebnisse

International audience ; Dans un secteur rural au nord-est de la France, une collectivité locale souhaite relancer son économie en développant un projet de tourisme proposant diverses approches d'éducation relative à l'environnement, centrées sur l'environnement-nature. Pour la conception de ce « Pôle Nature », des personnes aux intérêts parfois très divergents (élus, chasseurs, pêcheurs, agriculteurs, naturalistes, scientifiques, éducateurs, etc.) ont été sollicitées. Dans le cadre de cet article, nous souhaitons montrer que les principales réserves et réticences exprimées sur ce projet peuvent s'interpréter par la présence d'un conflit de représentations relatives aux pratiques touristiques entre des acteurs ayant des rapports à la nature différents. Abstract : In a rural sector in the NorthEast of France, a local community wishes to promote its economy by developing a tourism project that proposes different environmental education approaches based on the environment as nature. For the design of this « Pôle Nature », people with sometimes very divergent interests (elected officials, hunters, fishermen, farmers, naturalists, scientists, teachers, etc.) were solicited. Within this paper, we wish to show that the principal reserves expressed on this project can be explained by the presence of a conflict on the representations of tourism practices between the actors that have different relationships with nature.

© 2018 Author(s). This article is distributed under a Creative Commons Attribution (CC BY) License ; Spintronics exploits the magnetoresistance effects to store or sense the magnetic information. Since the magnetoresistance strictly depends on the magnetic anisotropy of a system, it is fundamental to set a defined anisotropy to the system. Here, we investigate half-metallic La0.67Sr0.33MnO3 thin films by means of vectorial Magneto-Optical Kerr Magnetometry and found that they exhibit pure biaxial magnetic anisotropy at room temperature if grown onto a MgO (001) substrate with a thin SrTiO3 buffer. In this way, we can avoid unwanted uniaxial magnetic anisotropy contributions that may be detrimental for specific applications. The detailed study of the angular evolution of the magnetization reversal pathways and critical fields (coercivity and switching) discloses the origin of the magnetic anisotropy, which is magnetocrystalline in nature and shows fourfold symmetry at any temperature ; S.K.C. acknowledges Programme International de Coopération Scientifique (PICS) du CNRS under Grant No. 6161 and SIMEM Doctoral School at Universite de Caen Normandie for financial support. IMDEA-Nanociencia acknowledges support from the "Severo Ochoa" Program for Centres of Excellence in R&D (MINECO, Grant No. SEV-2016-0686). F.A., J.C., and P.P. acknowledge the support of Spanish MINECO Project Nos. FIS2015-67287-P and FIS2016-78591-C3-1-R and the Comunidad de Madrid through Project NANOFRONTMAG CM. This project has received funding from the European Union's Horizon 2020 research and innovation programme under Grant Agreement Nos. 737116 (byAxon) and 654360 NFFA-Europe