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See detailEntwicklung bei Zwillingen. Worauf ist in der Erziehung und Bildung besonders zu achten?
Gottschling, Juliana UL; Hahn, E.; Kornadt, A.E. et al

in Pädiatrische Praxis (2014), 83

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See detailVom Sputnikschock zur Pisakatastrophe
Lenz, Thomas UL

Presentation (2014)

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See detailEffects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic nanodisks
Maccaferri, Nicolò UL; Kataja, Mikko; Bonanni, Valentina et al

in Physica Status Solidi A. Applications and Materials Science (2014), 211(5), 1067-1075

Magnetoplasmonics is an emerging field of intense research on materials combining magnetic and plasmonic functionalities. The novel optical and magneto-optical (MO) properties displayed by these materials ... [more ▼]

Magnetoplasmonics is an emerging field of intense research on materials combining magnetic and plasmonic functionalities. The novel optical and magneto-optical (MO) properties displayed by these materials could allow the design of a new class of magnetically controllable optical nano-devices. In this work, we investigate the effects of a non-absorbing (insulating) substrate on the MO activity of pure ferromagnetic disk-shaped nanostructures supporting localized plasmon resonances. We show that the red-shift of the localized plasmon resonance, related to the modification of the localization of the electromagnetic field due to the substrate, is not the only effect that the substrate has on the MO response. We demonstrate that the reflectivity of the substrate itself plays a key role in determining the MO response of the system. We discuss why it is so and provide a description of the modeling tools suitable to take into account both effects. Understanding the role of the substrate will permit a more aware design of magnetoplasmonic nanostructured devices for future biotechnological and optoelectronic applications. [GRAPHICS] Ferromagnetic nickel nanodisk in vacuum (left) and on a non-absorbing substrate (right), illuminated by linearly polarized light. The polarization of the reflected field is changed in the first case due to a combination of intrinsic magneto-optical properties and the nanoconfinement of the material. In the second case, the polarization of the reflected light is affected also by the presence of the substrate. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim [less ▲]

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See detailMagnetoplasmonic Design Rules for Active Magneto-Optics
Lodewijks, Kristof; Maccaferri, Nicolò UL; Pakizeh, Tavakol et al

in Nano Letters (2014), 14(12), 7207-7214

Light polarization rotators and nonreciprocal optical isolators are essential building blocks in photonics technology. These macroscopic passive devices are commonly based on magneto-optical Faraday and ... [more ▼]

Light polarization rotators and nonreciprocal optical isolators are essential building blocks in photonics technology. These macroscopic passive devices are commonly based on magneto-optical Faraday and Kerr polarization rotation. Magnetoplasmonics, the combination of magnetism and plasmonics, is a promising route to bring these devices to the nanoscale. We introduce design rules for highly tunable active magnetoplasmonic elements in which we can tailor the amplitude and sign of the Kerr response over a broad spectral range. [less ▲]

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See detailOn Mpc-structures and symplectic Dirac operators
Cahen, Michel; Gutt, Simone; La Fuente-Gravy, Laurent UL et al

in Journal of Geometry and Physics (2014), 86

We prove that the kernels of the restrictions of the symplectic Dirac operator and one of the two symplectic Dirac–Dolbeault operators on natural sub-bundles of polynomial valued spinor fields are finite ... [more ▼]

We prove that the kernels of the restrictions of the symplectic Dirac operator and one of the two symplectic Dirac–Dolbeault operators on natural sub-bundles of polynomial valued spinor fields are finite dimensional on a compact symplectic manifold. We compute these kernels explicitly for complex projective spaces and show that the remaining Dirac–Dolbeault operator has infinite dimensional kernels on these finite rank sub-bundles. We construct injections of subgroups of the symplectic group (the pseudo-unitary group and the stabiliser of a Lagrangian subspace) in the Mpc group and classify G-invariant Mpc-structures on symplectic manifolds with a G-action. We prove a variant of Parthasarathy’s formula for the commutator of two symplectic Dirac-type operators on general symmetric symplectic spaces. [less ▲]

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See detailA simplified and accelerated phase field method for crack nucleation and propagation in highly heterogeneous materials
Nguyen, Thanh Tung UL; Yvonnet, Julien; Zhu, Q.-Z. et al

in 20th European Conference on Fracture (2014)

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See detailCrack nucleation and propagation in highly heterogeneous materials models obtained from microtomography images using phase field method
Nguyen, Thanh Tung UL; Yvonnet, Julien; Zhu, Q. Z. et al

in 11th World Congress on Computational Mechanics (2014)

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See detail3D Detection of damage evolution in porous brittle cement based materials
Nguyen, Thanh Tung UL; Bornert, Michel; Chateau, C. et al

in 16th International Conference on Experimental Mechanics (ICEM16) (2014)

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See detailThe downward spiral of mental disorders and educational attainment: a systematic review on early school leaving.
Esch, Pascale UL; Bocquet, Valery; Pull, Charles et al

in BMC psychiatry (2014), 14

BACKGROUND: Most psychiatric disorders present symptom patterns that cause severe impairment on the emotional, cognitive and social level. Thus, adolescents who suffer from a mental disorder risk finding ... [more ▼]

BACKGROUND: Most psychiatric disorders present symptom patterns that cause severe impairment on the emotional, cognitive and social level. Thus, adolescents who suffer from a mental disorder risk finding themselves in a downward spiral caused by the reciprocal association of psychological symptoms and negative school experiences that may culminate in early school leaving. In addition to previous collective work that mainly focused on school refusing behaviour among children and was presented as an expert's opinion, the following systematic review fills the knowledge gap by providing a structured overview of the bidirectional association between mental health and secondary school dropout based on a sound methodology and with a particular focus on mediating factors. METHODS: Four electronic databases were searched from January 1990 until June 2014. Selected references were assessed for study details, main results, mediating factors and methodological limitations. Standardized risk of bias assessment was conducted. RESULTS: Mood and anxiety disorders seemed to have a less consequential direct effect on early school leaving than substance use and disruptive behaviour disorders. The association between externalizing disorders and educational attainment was even stronger when the disorder occurred early in life. On the other hand, internalizing disorders were reported to develop as a consequence of school dropout. Only few studies had addressed gender differences, with discrepant results. Socio-economic background, academic achievement and family support were identified as significant mediating factors of the association between mental disorders and subsequent educational attainment. CONCLUSIONS: Findings suggested a strong association between mental health and education, in both directions. However, most studies focused on mediating factors that could not be targeted by intervention programs. [less ▲]

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See detailSanté mentale et éducation au Luxembourg: Etude des facteurs de risque psychosociaux associés au décrochage scolaire
Esch, Pascale UL; Bocquet, Valéry; Pull, Charles et al

in Prévention et promotion de la santé mentale: Une alliance transfrontalière innovante (2014)

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See detailLabor Market Effects of Unemployment Insurance Design
Tatsiramos, Konstantinos UL; Van Ours, Jan

in Journal of Economic Surveys (2014), 28(2), 284-311

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See detailSafety Nets and Benefit Dependence
Carcillo, Stéphane; Immervoll, Herwig; Jenkins, Stephen et al

Book published by Emerald (2014)

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See detailMore Sparse Families of Pairing-Friendly Elliptic Curves
Fotiadis, Georgios UL; Konstantinou, Elisavet

in International Conference on Cryptology and Network Security, Heraklion 22-24 October 2014 (2014)

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See detailA verified algebra for read-write Linked Data
Horne, Ross James UL; Sassone, Vladimiro

in Science of Computer Programming (2014), 89

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See detailMalte : île-sentinelle de l’Union européenne
Lemaire, Léa UL

E-print/Working paper (2014)

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See detailFixed-term employment contracts in Luxembourg
Deprez, Christian UL

in IUSLabor (2014), 1/2014

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See detailRevisiting the escape speed impact on dark matter direct detection
Magni, Stefano UL; Lavalle, J.

in Proceedings, International Conference: "Frontiers of Fundamental Physics '14", Marseille, France, July 15-18 (2014)

The knowledge of the high velocity tail of the WIMP (Weakly Interacting Massive Particles) velocity distribution has a strong impact on the way dark matter direct detection (DMDD) may constrain or ... [more ▼]

The knowledge of the high velocity tail of the WIMP (Weakly Interacting Massive Particles) velocity distribution has a strong impact on the way dark matter direct detection (DMDD) may constrain or discover light WIMPs in the GeV mass range. Recently, there have been important observational efforts to estimate the Galactic escape speed at the position of the Earth, like for instance the analysis published in early 2014 by the RAVE Collaboration (Piffl et al., 2014), which is of interest in the perspective of reducing the astrophysical uncertainties in DMDD. Nevertheless, these new estimates cannot be used blindly as they rely on assumptions on the Milky Way mass distribution, which induce tight correlations between the escape speed and other local astrophysical parameters (circular speed and dark matter density). We make a self-consistent study of the implications of the RAVE results on DMDD assuming isotropic DM velocity distributions, both Maxwellian and ergodic. Taking as reference the experimental sensitivities currently achieved by LUX, CRESST2, and SuperCDMS, we show that the uncertainties inferred for the exclusion curves in the low WIMP mass region are moderate, ranging from 10% to 20% , and that the RAVE results imply large values of r , and so correspond to exclusion curves that are more constraining than the standard ones by 40%. [less ▲]

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See detailLecteur silencieux et paysage silencieux : l’incipit du Mayor of Casterbridge de Thomas Hardy
Thiltges, Sébastian UL

in Alkemie, Revue semestrielle de littérature et de philosophie (2014)

To describe the polysemy of the concept of silence in the novel, we choose to question the nature and the function of silence as a descriptive motive as it appears specifically in landscape description. A ... [more ▼]

To describe the polysemy of the concept of silence in the novel, we choose to question the nature and the function of silence as a descriptive motive as it appears specifically in landscape description. A history of reading related the emergence of silent reading, but the present contribution studies how silence also creates an analogy between landscape perception and textual reading. The introductive descriptive sequence of Thomas Hardy’s novel The Mayor of Casterbridge proves that Jean-Pierre Richard’s literary chiasmus between “pages” and “landscapes” is not just an abstract metaphor, but crucial to the novel’s imaginary. [less ▲]

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See detailObjet référentiel et objet culturel : une sémio-histoire de la fenêtre dans la littérature européenne
Thiltges, Sébastian UL

in Acta Fabula: Revue des Parutions en Théorie Littéraire (2014), 15(8),

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