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Peer Reviewed
See detailAn epithelial-dependent contracting factor induced by calcium influx in guinea-pig trachea
Bertrand, C.; Da Silva, A.; Landry, Y. et al

in Pulmonary Pharmacology (1993), 6(1), 69-76

The effects of epithelium removal were studied on the contraction induced by Ca2+ in K(+)-depolarizing solution, and by the calcium ionophore A 23187 in guinea-pig isolated tracheal strips. Epithelium ... [more ▼]

The effects of epithelium removal were studied on the contraction induced by Ca2+ in K(+)-depolarizing solution, and by the calcium ionophore A 23187 in guinea-pig isolated tracheal strips. Epithelium removal reduced the maximal response to Ca2+ in K(+)-depolarizing solution and caused a significant shift to the right of the Ca2+ concentration-response curves. The contraction induced by the calcium ionophore A 23187 (10(-6) M) was also markedly reduced by epithelium removal. These results suggest the occurrence of an epithelium-derived contracting factor. The effects of hexamethonium, atropine, spantide and thiorphan showed that acetylcholine and neurokinins play a minor role in the Ca(2+)-induced contraction. The epithelium-dependent potentiation of the calcium- and of the A 23187-induced contractions was inhibited by an antibody selective for rat calcitonin gene-related peptide (rCGRP alpha). Therefore, CGRP-like immunoreactive material may be part of the epithelium-dependent contracting factor of guinea-pig trachea. Comparison of concentration-response curves for rCGRP alpha in epithelium-free and in intact guinea-pig tracheal strips suggests that an epithelium-dependent contracting factor may be mobilized by CGRP. [less ▲]

Detailed reference viewed: 84 (2 UL)
See detailEpoxy resins in confined geometry
Djemour, Anna UL

Scientific Conference (2012, March)

Detailed reference viewed: 35 (1 UL)
See detailLes épreuves standardisées (ÉpStan) au Luxembourg
Fischbach, Antoine UL; Dierendonck, Christophe UL

Presentation (2013, June)

Detailed reference viewed: 145 (11 UL)
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See detailÉpreuves Standardisées : Objectifs et méthodologie
Ugen, Sonja UL; Fischbach, Antoine UL; Reichert, Monique UL et al

in Martin, Romain; Ugen, Sonja; Fischbach, Antoine (Eds.) Épreuves Standardisées: Bildungsmonitoring für Luxemburg. Nationaler Bericht 2011 bis 2013 (2015)

Detailed reference viewed: 68 (6 UL)
See detailLes Épreuves Standardisées vues par les acteurs du terrain. Étude exploratoire.
Milmeister, Marianne UL; Milmeister, Paul UL; Weis, Christiane UL

Report (2013)

Afin de dépasser le stade des hypothèses, il a été décidé de récolter des informations quantitatives (au moyen d'un questionnaire à large échelle) et qualitatives (au travers de focus groups) quant à la ... [more ▼]

Afin de dépasser le stade des hypothèses, il a été décidé de récolter des informations quantitatives (au moyen d'un questionnaire à large échelle) et qualitatives (au travers de focus groups) quant à la façon dont sont perçues et utilisées les Épreuves Standardisées. Le but en est de mieux comprendre comment les différents acteurs concernés (directeurs, inspecteurs, enseignants, élèves et parents) perçoivent le dispositif des Épreuves Standardisées et tiennent compte des informations qui leur sont envoyées en retour (rapport NATIONAL, rapport ECOLE, rapport CLASSE, rapports ELEVE). Une attention particulière est portée à la compréhension et l'usage des rapports mis à disposition ainsi qu'aux éventuelles pistes d'amélioration de l'outil proposées par les acteurs concernés. Le présent document synthétise la phase exploratoire de l'étude qualitative (menée en 2013) en présentant (1) les guides d'entretien utilisés (et leur modification) et (2) une première analyse quant aux contenus développés par les personnes interrogées. [less ▲]

Detailed reference viewed: 47 (12 UL)
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See detailÉpreuves Standardisées. Nationaler Bericht 2011‐2012
Martin, Romain UL; Brunner, Martin UL

Book published by University of Luxembourg, EMACS (2012)

Detailed reference viewed: 71 (10 UL)
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See detailÉpreuves Standardisées: Bildungsmonitoring für Luxemburg. Nationaler Bericht 2011 bis 2013
Martin, Romain UL; Ugen, Sonja UL; Fischbach, Antoine UL

Book published by University of Luxembourg, LUCET (2015)

Detailed reference viewed: 152 (41 UL)
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Peer Reviewed
See detailLes Épreuves Standardisées: Élément-clé du pilotage du système éducatif luxembourgeois
Dierendonck, Christophe UL; Kafaï, Amina; Fischbach, Antoine UL et al

in Éducation & Formations (2015), 86-87

Detailed reference viewed: 210 (28 UL)
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See detailÉpreuves Standardisées: Ziele und methodische Grundlagen
Brunner, Martin UL; Fischbach, Antoine UL; Reichert, Monique UL et al

in Martin, Romain; Brunner, Martin (Eds.) Épreuves Standardisées. Nationaler Bericht 2011‐2012 (2012)

Detailed reference viewed: 60 (8 UL)
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See detailLes Épreuves Standardisées : Comment sont-elles perçues par les acteurs concernés  ?
Ugen, Sonja UL; Martin, Romain UL; Fischbach, Antoine UL

Book published by University of Luxembourg: LUCET (2017)

Detailed reference viewed: 96 (13 UL)
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See detailÉpStan Technical Report
Fischbach, Antoine UL; Ugen, Sonja UL; Martin, Romain UL

Book published by University of Luxembourg (2014)

Detailed reference viewed: 141 (41 UL)
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Peer Reviewed
See detailThe equality problem in the class of conjugate means
Dascal, Judita UL; Burai, Pal

in Aequationes Mathematicae (2012), 84(1), 77-90

Detailed reference viewed: 65 (3 UL)
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Peer Reviewed
See detailEqualization Taxes and the EU's 'Digital Services Tax'
Kofler, Georg; Sinnig, Julia UL

in Intertax, International Tax Review (2019), 47(2), 176-200

Equalization taxes have a number of potential disadvantages and shortcomings, including their negative impact on growth, innovation and productivity, non-neutrality, double taxation, and problems in ... [more ▼]

Equalization taxes have a number of potential disadvantages and shortcomings, including their negative impact on growth, innovation and productivity, non-neutrality, double taxation, and problems in compliance and administration. However, some also view them as a politically feasible way to address perceived ‘unfairness’ in the territorial allocation of taxing rights in a digitalized economy. In any event, however, there are also certain technical features any such tax should comply with, including, e.g. compliance with international obligations (e.g. EU and tax treaty law), administrative simplicity, and a scope that is not overreaching. This contribution will address the general background of ‘equalization taxes’, the fundamental objections raised against it, and the relevant design features, both on a general level and specifically with regard to the proposal for an EU ‘Digital Services Tax’. [less ▲]

Detailed reference viewed: 280 (9 UL)
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See detailEqualization Taxes and the EU's 'Digital Services Tax'
Kofler, Georg; Sinnig, Julia UL

in Haslehner, Werner; Kofler, Georg; Pantazatou, Aikaterini (Eds.) et al Tax and the Digital Economy - Challenges and Proposals for Reform (2019)

Detailed reference viewed: 93 (2 UL)
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See detailAn equation-free multiscale method applied to discrete networks
Beex, Lars UL; Kerfriden, Pierre

Scientific Conference (2017, June 06)

Detailed reference viewed: 45 (4 UL)
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See detailAn equation-free multiscale method: a result of extending the quasicontinuum method to irregular structures
Beex, Lars UL; Kerfriden, Pierre

Scientific Conference (2017, July 16)

Detailed reference viewed: 45 (1 UL)
Peer Reviewed
See detailEquation-free multiscale modeling of metallic lattices with geometrical and material nonlinearity and variability
Chen, Li UL; Berke, Peter; Beex, Lars UL et al

Scientific Conference (2019, September 05)

An nonlinear equation-free concurrent multiscale numerical framework, being the generalization of the quasicontinuum method [2] is proposed in this contribution to model 3D metallic lattice structures ... [more ▼]

An nonlinear equation-free concurrent multiscale numerical framework, being the generalization of the quasicontinuum method [2] is proposed in this contribution to model 3D metallic lattice structures. The proposed equation-free multiscale method (EFMM) relies on the use of fully-resolved domains (FRD) in which all of the details of the lattice micro-structure are captured, and of coarse-grained domains (CGD) in which a model reduction is performed by interpolation and summation steps. The particularity of the lattice geometry description is that cross section variations along the lattice struts (that are experimentally observed as a result of the manufacturing process) are explicitly represented by their discretization in several beam finite elements, both in the FRDs and CGDs. The interpolation step of the EFMM refers to a kinematic approximation of the lattice deformation within CGDs based on the movement of a reduced number of material points at the CGD corners. One of the originalities of this work is the consideration of a separate interpolation of each type of degrees of freedom within the CGDs, as a function of the connectivity of the lattice beam nodes (i.e. taking the location of different cross sections into account) and their kinematical pattern. This, together with accounting for plasticity, by the development and implementation of a 3D co-rotational beam finite element [1] with embedded plastic hinges [3], are unprecedented and original contributions. The EFMM is applied to metallic BCC lattices with various sizes and loading conditions. By comparing to direct numerical simulation (DNS), it is shown that both material and geometrical non-linearities can be captured at a fraction of the DNS cost (the computational time is reduced by 97.27% while introducing an error of only 3.76%). [less ▲]

Detailed reference viewed: 27 (3 UL)
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See detailAn equation-free, nested, concurrent multiscale approach without scale-separation
Beex, Lars UL; Kerfriden, Pierre

Scientific Conference (2018, September)

Detailed reference viewed: 48 (0 UL)
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Peer Reviewed
See detailEquational approach to argumentation networks
Gabbay, Dov M. UL

in Argument and Computation (2012), 3(2-3), 87--142

Detailed reference viewed: 74 (3 UL)