Université de Fribourg

Notes on the cheek region of the Late Jurassic theropod dinosaur Allosaurus

Evers, Serjoscha W. ; Foth, Christian ; Rauhut, Oliver W.M.

In: PeerJ, 2020, vol. 8, p. e8493

Allosaurus, from the Late Jurassic of North America and Europe, is a model taxon for Jurassic basal tetanuran theropod dinosaurs. It has achieved an almost iconic status due to its early discovery in the late, 19th century, and due to the abundance of material from the Morrison Formation of the western U.S.A., making Allosaurus one of the best-known theropod taxa. Despite this, various...

Université de Fribourg

Late Jurassic theropod dinosaur bones from the Langenberg Quarry (Lower Saxony, Germany) provide evidence for several theropod lineages in the central European archipelago

Evers, Serjoscha W. ; Wings, Oliver

In: PeerJ, 2020, vol. 8, p. e8437

Marine limestones and marls in the Langenberg Quarry provide unique insights into a Late Jurassic island ecosystem in central Europe. The beds yield a varied assemblage of terrestrial vertebrates including extremely rare bones of theropod from theropod dinosaurs, which we describe here for the first time. All of the theropod bones belong to relatively small individuals but represent a wide...

Université de Fribourg

Spatial scaling, proportional thinking, and numerical understanding in 5- to 7-year-old children

Möhring, Wenke ; Frick, Andrea ; Newcombe, Nora S.

In: Cognitive Development, 2018, vol. 45, p. 57-67

The present study investigated the role of spatial scaling and proportional-reasoning skills in children’s number-line estimations. Proportional strategies in number-line estimations might suggest that correlations between number-line knowledge and scaling are driven by proportional thinking. However, analyses of data on spatial scaling, proportional reasoning, counting skills, and...

Université de Fribourg

Enhancing countries’ fitness with recommender systems on the international trade network

Liao, Hao ; Huang, Xiao-Min ; Wu, Xing-Tong ; Liu, Ming-Kai ; Vidmer, Alexandre ; Zhou, Ming-Yang ; Zhang, Yi-Cheng

In: Complexity, 2018, p. -

Prediction is one of the major challenges in complex systems. The prediction methods have shown to be effective predictors of the evolution of networks. These methods can help policy makers to solve practical problems successfully and make better strategy for the future. In this work, we focus on exporting countries’ data of the International Trade Network. A recommendation system is then...

Université de Fribourg

Re-evaluation of the Haarlem Archaeopteryx and the radiation of maniraptoran theropod dinosaurs

Foth, Christian ; Rauhut, Oliver W. M.

In: BMC Evolutionary Biology, 2017, vol. 17, p. 236

Archaeopteryx is an iconic fossil that has long been pivotal for our understanding of the origin of birds. Remains of this important taxon have only been found in the Late Jurassic lithographic limestones of Bavaria, Germany. Twelve skeletal specimens are reported so far. Archaeopteryx was long the only pre-Cretaceous paravian theropod known, but recent discoveries from the Tiaojishan...

Université de Fribourg

Magnetic moment evolution and spin freezing in doped BaFe 2 As 2

Pelliciari, Jonathan ; Huang, Yaobo ; Ishii, Kenji ; Zhang, Chenglin ; Dai, Pengcheng ; Chen, Gen Fu ; Xing, Lingyi ; Wang, Xiancheng ; Jin, Changqing ; Ding, Hong ; Werner, Philipp ; Schmitt, Thorsten

In: Scientific Reports, 2017, vol. 7, no. 1, p. 8003

Fe-K β X-ray emission spectroscopy measurements reveal an asymmetric doping dependence of the magnetic moments μbare in electron- and hole-doped BaFe2As2. At low temperature, μbare is nearly constant in hole-doped samples, whereas it decreases upon electron doping. Increasing temperature substantially enhances μbare in the hole-doped region, which is naturally explained by the...

Université de Fribourg

Link prediction in evolving networks based on popularity of nodes

Wang, Tong ; He, Xing-Sheng ; Zhou, Ming-Yang ; Fu, Zhong-Qian

In: Scientific Reports, 2017, vol. 7, no. 1, p. 7147

Link prediction aims to uncover the underlying relationship behind networks, which could be utilized to predict missing edges or identify the spurious edges. The key issue of link prediction is to estimate the likelihood of potential links in networks. Most classical static-structure based methods ignore the temporal aspects of networks, limited by the time-varying features, such approaches...

Consortium of Swiss Academic Libraries

Physiological Correlates of Urbanization in a Desert Songbird

Giraudeau, Mathieu ; McGraw, Kevin J.

In: Integrative and Comparative Biology, 2014, vol. 54, no. 4, p. 622-632

Université de Fribourg

A network of chromatin factors is regulating the transition to postembryonic development in caenorhabditis elegans

Erdelyi, Peter ; Wang, Xing ; Suleski, Marina ; Wicky, Chantal

In: G3: Genes, Genomes, Genetics, 2017, vol. 7, no. 2, p. 343–353

Mi2 proteins are evolutionarily conserved, ATP-dependent chromatin remodelers of the CHD family that play key roles in stem cell differentiation and reprogramming. In Caenorhabditis elegans, the let-418 gene encodes one of the two Mi2 homologs, which is part of at least two chromatin complexes, namely the Nucleosome Remodeling and histone Deacetylase (NuRD) complex and the MEC complex, and...

Haute Ecole Arc Conservation-Restauration

Le long de la rivière Keram : deux boucliers cérémoniels en bois et mosaïque de plumes

Michellod, Laurane

Mémoire de master : Haute Ecole Arc Conservation-Restauration, 2015.

This thesis deals with the conservation-restoration of two shields from Papua New Guinea (PNG). These wooden shields are adorned with mosaics of feathers. The anthropomorphic and geometric patterns have been disorganized over the time compromising their reading and aesthetic appreciation. The Museum für Völkerkunde von Burgdorf (Switzerland) wished to give back the physical stability of the...