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Université de Fribourg

L'expérience professionnelle des éducateurs sociaux en contexte multiculturel : une approche méthodologique mixte de la perception et de la gestion de la différence culturelle

Gulfi, Alida ; Ogay, Tania (Dir.)

Thèse de doctorat : Université de Fribourg, 2015.

L’expérience de la différence culturelle fait partie de la réalité professionnelle des éducateurs sociaux. Cette recherche s’intéresse à la perception et la gestion de la différence culturelle par les éducateurs sociaux dans leur travail au quotidien, dans une perspective interculturelle écosystémique. Pour ce faire, une approche méthodologique mixte séquentielle a été...

Université de Fribourg

Les ethnothéories de l'éducation, quel accord entre parents migrants et enseignantes?

Conus, Xavier ; Ogay Tania

In: La revue internationale de l'éducation familiale, 2014, vol. 35, no. 1, p. 93-123

Université de Fribourg

The lifespan development of cognate guessing skills in an unknown related language

Vanhove, Jan ; Berthele, Raphael

In: International Review of Applied Linguistics in Language Teaching, 2015, vol. 53, no. 1, p. 1-38

Université de Fribourg

Toward link predictability of complex networks

Lü, Linyuan ; Pan, Liming ; Zhou, Tao ; Zhang, Yi-Cheng ; Stanley, H. Eugene

In: Proceedings of the National Academy of Sciences, 2015, vol. 112, no. 8, p. 2325–2330

The organization of real networks usually embodies both regularities and irregularities, and, in principle, the former can be modeled. The extent to which the formation of a network can be explained coincides with our ability to predict missing links. To understand network organization, we should be able to estimate link predictability. We assume that the regularity of a network is reflected in...

Université de Fribourg

Interaction quench in the Holstein model: Thermalization crossover from electron- to phonon-dominated relaxation

Murakami, Yuta ; Werner, Philipp ; Tsuji, Naoto ; Aoki, Hideo

In: Physical Review B, 2015, vol. 91, no. 4, p. 045128

We study the relaxation of the Holstein model after a sudden switch-on of the interaction by means of the nonequilibrium dynamical mean field theory, with the self-consistent Migdal approximation as an impurity solver. We show that there exists a qualitative change in the thermalization dynamics as the interaction is varied in the weak-coupling regime. On the weaker interaction side of this...

Université de Fribourg

Dynamic optimal capital growth of diversified investment

Yonga, Luo ; Bo, Zhu ; Yong, Tang

In: Journal of Applied Statistics, 2015, vol. 42, no. 3, p. 577–588

We investigate the problem of dynamic optimal capital growth of diversified investment. A general framework that the trader maximize the expected log utility of long-term growth rate of initial wealth was developed. We show that the trader's fortune will exceed any fixed bound when the fraction is chosen less than critical value. But, if the fraction is larger than that value, ruin is almost...

Université de Fribourg

A quantitative study of particle size effects in the magnetorelaxometry of magnetic nanoparticles using atomic magnetometry

Dolgovskiy, Vladimir ; Lebedev, Victor ; Colombo, Simone ; Weis, Antoine ; Michen, Benjamin ; Ackermann-Hirschi, Liliane ; Petri-Fink, Alke

In: Journal of Magnetism and Magnetic Materials, 2015, vol. 379, p. 137–150

The discrimination of immobilised superparamagnetic iron oxide nanoparticles (SPIONs) against SPIONs in fluid environments via their magnetic relaxation behaviour is a powerful tool for bio-medical imaging. Here we demonstrate that a gradiometer of laser-pumped atomic magnetometers can be used to record accurate time series of the relaxing magnetic field produced by pre-polarised SPIONs. We have...

Haute Ecole pédagogique Fribourg

Hausaufgabenqualität im Französischunterricht aus Sicht von Schülern, Lehrkräften und Experten und die Entwicklung von Leistung, Hausaufgabensorgfalt und Bewertung der Hausaufgaben

Schnyder, Inge ; Niggli, Alois ; Trautwein, Ulrich

In: Zeitschrift für Pädagogische Psychologie, 2008, vol. 22, no. 3-4, p. 233-246

This article presents a theoretical conceptualization of homework quality and distinguishes three perspectives on the evaluation of homework quality (students, teachers, observers). In the empirical part of the study, 1382 students from three Swiss cantons were administered achievement tests and questionnaires at the beginning and end of grade 8. The students’ teachers were also surveyed. A...