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Université de Fribourg

Developing a framework of minimum standards for the risk assessment of alien species

Roy, Helen E. ; Rabitsch, Wolfgang ; Scalera, Riccardo ; Stewart, Alan ; Gallardo, Belinda ; Genovesi, Piero ; Essl, Franz ; Adriaens, Tim ; Bacher, Sven ; Booy, Olaf ; Branquart, Etienne ; Brunel, Sarah ; Copp, Gordon Howard ; Dean, Hannah ; D?hondt, Bram ; Josefsson, Melanie ; Kenis, Marc ; Kettunen, Marianne ; Linnamagi, Merike ; Lucy, Frances ; Martinou, Angeliki ; Moore, Niall ; Nentwig, Wolfgang ; Nieto, Ana ; Pergl, Jan ; Peyton, Jodey ; Roques, Alain ; Schindler, Stefan ; Schönrogge, Karsten ; Solarz, Wojciech ; Stebbing, Paul D. ; Trichkova, Teodora ; Vanderhoeven, Sonia ; Valkenburg, Johan van ; Zenetos, Argyro

In: Journal of Applied Ecology, 2018, vol. 55, no. 2, p. 526–538

Biological invasions are a threat to biodiversity, society and the economy. There is an urgent need to provide evidence-based assessments of the risks posed by invasive alien species (IAS) to prioritize action. Risk assessments underpin IAS policies in many ways: informing legislation; providing justification of restrictions in trade or consumer activities; prioritizing surveillance and rapid...

Université de Fribourg

Optical study of Dirac fermions and related phonon anomalies in the antiferromagnetic compound CaFeAsF

Xu, B. ; Xiao, H. ; Gao, B. ; Ma, Y. H. ; Mu, G. ; Mar?ík, Premysl ; Sheveleva, Evgeniia ; Lyzwa, F. ; Dai, Y. M. ; Lobo, R. P. S. M. ; Bernhard, Christian

In: Physical Review B, 2018, vol. 97, no. 19, p. 195110

We performed optical studies on CaFeAsF single crystals, a parent compound of the 1111-type iron-based superconductors that undergoes a structural phase transition from tetragonal to orthorhombic at Ts=121 K and a magnetic one to a spin density wave (SDW) state at TN=110 K. In the low-temperature optical conductivity spectrum, after the subtraction of a narrow Drude peak, we observe a...

Université de Fribourg

Lattice-mediated magnetic order melting in ${\mathrm{TbMnO}}_{3}$

Baldini, Edoardo ; Kubacka, Teresa ; Mallett, Benjamin P. P. ; Ma, Chao ; Koohpayeh, Seyed M. ; Zhu, Yimei ; Bernhard, Christian ; Johnson, Steven L. ; Carbone, Fabrizio

In: Physical Review B, 2018, vol. 97, no. 12, p. 125149

Recent ultrafast magnetic-sensitive measurements [Johnson et al., Phys. Rev. B 92, 184429 (2015); Bothschafter et al., Phys. Rev. B 96, 184414 (2017)] have revealed a delayed melting of the long-range cycloid spin order in TbMnO3 following photoexcitation across the fundamental Mott-Hubbard gap. The microscopic mechanism behind this slow transfer of energy from the photoexcited carriers to...

Consortium of Swiss Academic Libraries

Fast PRISM: Branch and Bound Hough Transform for Object Class Detection

Lehmann, Alain ; Leibe, Bastian ; Van Gool, Luc

In: International Journal of Computer Vision, 2011, vol. 94, no. 2, p. 175-197

Consortium of Swiss Academic Libraries

Statistical outliers and dragon-kings as Bose-condensed droplets

Yukalov, V. ; Sornette, D.

In: The European Physical Journal Special Topics, 2012, vol. 205, no. 1, p. 53-64

Consortium of Swiss Academic Libraries

Grain Selection and Texture Evolution in Directionally Solidified Al-Zn Alloys

Gonzales, Frédéric ; Rappaz, Michel

In: Metallurgical and Materials Transactions A, 2008, vol. 39, no. 9, p. 2148-2160