References of "2008"
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See detailFremdenfeindlichkeit in Deutschland – Stand der Forschung
Hadjar, Andreas UL; Boehnke, Klaus; Schmode, Udo

in Krüger, Heinz-Hermann; Schmude, Udo (Eds.) Fremd im eigenen Land? Erkundungen in den Zonen der Verwundbarkeit. Xenos – Berichte aus der Praxis (2008)

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See detailSpectral Efficiency of Variable Density Cellular System
Chatzinotas, Symeon UL; Imran, M. A.; Tzaras, C.

in PIMRC 2008 (2008)

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See detailComment on "Huge Excitonic Effects in Layered Hexagonal Boron Nitride"
Wirtz, Ludger UL; Marini, Andrea; Gruning, Myrta et al

in Physical Review Letters (2008), 100(18),

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See detailCell passaging rapidly affects expression, secretion and activity of MMP9 as well as mobility of HL60 leukemia cells
Bernard, Yohann UL; Plançon, Sébastien UL; Melchior, Chantal UL et al

in Journal of Cell and Animal Biology (2008), 2(9), 160-165

The HL60 cell line, derived from acute promyelocytic leukemia cells, can differentiate into neutrophil-like cell following DMSO treatment. Mobility of HL60, or DMSO-differentiated HL60 cells (≠HL60 ... [more ▼]

The HL60 cell line, derived from acute promyelocytic leukemia cells, can differentiate into neutrophil-like cell following DMSO treatment. Mobility of HL60, or DMSO-differentiated HL60 cells (≠HL60), requires surface expression of adhesion molecules and production of matrix metalloproteinases (MMPs). The aim of this study was to investigate in HL60 and ≠HL60 the effects of cell passaging (over 5 passages after delivery (P and P+5)) on i) surface expression of adhesion molecule CD11b, which is considered a neutrophil differentiation marker ii) MMP9 mRNA expression, protein release and zymographic activity and iii) cellular mobility. As expected, CD11b expression at both cell passages increased in ≠HL60 relative to undifferentiated HL60, but expression levels of this neutrophils marker did not change over 5 passages. MMP9 mRNA expression however, in basal conditions was increased in HL60 at P+5. At P+5 versus P, MMP9 protein levels, MMP9 zymographic activity and cellular mobility in HL60 and ≠HL60 were elevated. Stimulation by N-formyl-L-Methionyl-L-Leucyl-L-Phenylalanine had no effects on HL60, but raised MMP9 protein concentration and zymographic activity in ≠HL60. Since passage history is likely to also influence cellular functions other than MMP-related effects, it is important to carefully consider passage numbers when designing experiments [less ▲]

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See detailEvidence for individual face discrimination in non-face selective areas of the visual cortex in acquired prosopagnosia
Dricot, Laurence; Sorger, Bettina; Schiltz, Christine UL et al

in Behavioral Neurology (2008), 19(1-2), 75-79

Two areas in the human occipito-temporal cortex respond preferentially to faces: 'the fusiform face area' ('FFA') and the 'occipital face area' ('OFA'). However, it is unclear whether these areas have an ... [more ▼]

Two areas in the human occipito-temporal cortex respond preferentially to faces: 'the fusiform face area' ('FFA') and the 'occipital face area' ('OFA'). However, it is unclear whether these areas have an exclusive role in processing faces, or if sub-maximal responses in other visual areas such as the lateral occipital complex (LOC) are also involved. To clarify this issue, we tested a brain-damaged patient (PS) presenting a face-selective impairment with functional magnetic resonance imaging (fMRI). The right hemisphere lesion of the prosopagnosic patient encompasses the 'OFA' but preserves the 'FFA' and LOC. Using fMRI-adaptation, we found a larger response to different faces than repeated faces in the ventral part of the LOC both for normals and the patient, next to her right hemisphere lesion. This observation indicates that following prosopagnosia, areas that do not respond preferentially to faces such as the ventral part of the LOC (vLOC) may still be recruited to subtend residual perception of individual faces. [less ▲]

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See detailA web-based quality control system for assessment processes
Busana, Gilbert UL; Koenig, Vincent UL; Martin, Romain UL et al

in International Journal of Psychology (2008), 43

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See detailImplementation of efficient proactive computing using lazy evaluation in a learning management system (extended version)
Zampunieris, Denis UL

in International Journal of Web-Based Learning and Teaching Technologies (2008), 3(1), 103-109

In Zampunieris (2006) we proposed a new kind of learning management system, proactive LMS, designed to help users to better interact online by providing programmable, automatic, and continuous analyses of ... [more ▼]

In Zampunieris (2006) we proposed a new kind of learning management system, proactive LMS, designed to help users to better interact online by providing programmable, automatic, and continuous analyses of the users’ actions, augmented with appropriate actions initiated by the LMS itself. The proactive part of our LMS is based on a dynamic rules-based system. However, the main algorithm we proposed in order to implement the rules-running system suffers some efficiency problems. In this article, we propose a new version of the main rules-running algorithm that is based on lazy evaluation in order to avoid unnecessary and time-costly requests to the LMS database when a rule is not activated, that is, when its actions part will not be performed because preliminary check(s) failed. [less ▲]

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See detailChemically induced transition phenomena in polyurethanes as seen from generalized mode Grüneisen parameters.
Müller, Ulrich UL; Philipp, Martine UL; Bactavatchalou, R. et al

in Journal of Physics : Condensed Matter (2008), 20(20), 205101-205108

Many phenomenological properties of reactive polymers like polyurethanes increase or decrease continuously in the course of the curing process before saturating at the end of the chemical reaction. This ... [more ▼]

Many phenomenological properties of reactive polymers like polyurethanes increase or decrease continuously in the course of the curing process before saturating at the end of the chemical reaction. This holds true for instance for the mass density, the refractive index, the chemical turnover and the hypersonic properties. The reason for this monotone behaviour is that the chemical reaction behaves like a continuous succession of irreversible phase transitions. These transitions are superposed by the sol–gel transition and possibly by the chemically induced glass transition, with the drawback that the latter two highlighted transitions are often hidden by the underlying curing process. In this work we propose generalized mode Grüneisen parameters as an alternative probe for elucidating the polymerization process itself and the closely related transition phenomena. As a model system we use polyurethane composed of a diisocyanate and varying ratios of difunctional and trifunctional alcohols. [less ▲]

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See detailDer Hindsight-Bias in Einschätzungen zur Fußballweltmeisterschaft 2006 in Deutschland
Hörstermann, Thomas UL

Bachelor/master dissertation (2008)

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See detailCompétence et recevabilité des questions préjudicielles
Gerkrath, Jörg UL

in La jurisprudence de la Cour constitutionnelle du Luxembourg 1997 - 2007 (2008)

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See detailThe talin rod IBS2 alpha-helix interacts with the beta3 integrin cytoplasmic tail membrane-proximal helix by establishing charge complementary salt bridges.
Rodius, Sophie; Chaloin, Olivier; Moes, Michèle UL et al

in The Journal of biological chemistry (2008), 283(35), 24212-23

Talin establishes a major link between integrins and actin filaments and contains two distinct integrin binding sites: one, IBS1, located in the talin head domain and involved in integrin activation and a ... [more ▼]

Talin establishes a major link between integrins and actin filaments and contains two distinct integrin binding sites: one, IBS1, located in the talin head domain and involved in integrin activation and a second, IBS2, that maps to helix 50 of the talin rod domain and is essential for linking integrin beta subunits to the cytoskeleton ( Moes, M., Rodius, S., Coleman, S. J., Monkley, S. J., Goormaghtigh, E., Tremuth, L., Kox, C., van der Holst, P. P., Critchley, D. R., and Kieffer, N. (2007) J. Biol. Chem. 282, 17280-17288 ). Through the combined approach of mutational analysis of the beta3 integrin cytoplasmic tail and the talin rod IBS2 site, SPR binding studies, as well as site-specific antibody inhibition experiments, we provide evidence that the integrin beta3-talin rod interaction relies on a helix-helix association between alpha-helix 50 of the talin rod domain and the membrane-proximal alpha-helix of the beta3 integrin cytoplasmic tail. Moreover, charge complementarity between the highly conserved talin rod IBS2 lysine residues and integrin beta3 glutamic acid residues is necessary for this interaction. Our results support a model in which talin IBS2 binds to the same face of the beta3 subunit cytoplasmic helix as the integrin alphaIIb cytoplasmic tail helix, suggesting that IBS2 can only interact with the beta3 subunit following integrin activation. [less ▲]

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See detailA Nation-Wide Computer-based School Monitoring Program
Keller, Ulrich UL; Martin, Romain UL; Reichert, Monique UL et al

in International Journal of Psychology (2008), 43

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See detailDie Abwesenheit des Vaters Schriftlichkeit als Schwellenraum
Mein, Georg UL

in Mein, Georg; Geisenhanslüke, Achim (Eds.) Schriftkultur und Schwellenkunde (2008)

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See detailDie Entwicklung einer multikulturellen Gesellschaft und ihre Herausforderungen am Beispiel Luxemburgs
Willems, Helmut UL; Milmeister, Paul UL

in Meimeth, Michael; Robertson, John; Talmon, Susanne (Eds.) Integration und Identität in Einwanderungsgesellschaften. Herausforderungen und transatlantische Antworten (2008)

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See detailDeveloping and Evaluating a Computerized Adaptive Mathematical Test
Schiltz, Jang UL

in Stemmler, Mark; Lautsch, Erwin; Martinke, Dirk (Eds.) Configural Frequency Analysis (CFA) and other non-parametrical methods: Gustav A. Lienert Memorial Issue. (2008)

The theoretical basis underlying the construction of a CAT is summed up and the item response theory explained. In comparison with a classical paper-and-pencil test, the characteristics and the advantages ... [more ▼]

The theoretical basis underlying the construction of a CAT is summed up and the item response theory explained. In comparison with a classical paper-and-pencil test, the characteristics and the advantages of a CAT are exposed. After performing a thorough analysis of the data, we developed a CAT based on the responses of 3590 children to a standardized mathematical test. The software presents a great amount of flexibility and allows treating multiple-choice items, as well as items with free response options and graphical items. Some results of an empirical evaluating study are presented. We showed that qualities of power, flexibility and economy of time of the CAT do not imply the loss of the classical psychometric properties of a paper-and-pencil test; we analyze the carry-over effect between the computerized and the paper-and-pencil test situation and as well as the relations between mathematical skills and general cognitive abilities. [less ▲]

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See detailThe DRD2 TaqIA polymorphism and demand of dopaminergic medication in Parkinson's disease.
Paus, Sebastian; Grünewald, Anne UL; Klein, Christine UL et al

in Movement Disorders (2008), 23(4), 599-602

Previous studies have demonstrated that the TaqIA polymorphism of the D2 dopamine receptor gene (DRD2) is associated with response to dopaminergic and antidopaminergic treatment in Parkinson's disease (PD ... [more ▼]

Previous studies have demonstrated that the TaqIA polymorphism of the D2 dopamine receptor gene (DRD2) is associated with response to dopaminergic and antidopaminergic treatment in Parkinson's disease (PD) and schizophrenia, respectively. We tested whether the TaqIA genotype in PD is responsible for demand of dopaminergic medication, measured in total dopaminergic load per year of disease, in a large scale association study based on the gene bank of the German Competence Network on Parkinson's disease. Regression analysis yielded no significant differences between the TaqIA genotypes. We conclude that the DRD2 TaqIA polymorphism alone has no pivotal role for interindividual variability of dopaminergic requirement in PD. We propose a practicable system of measuring dopaminergic treatment for future pharmacogenetic studies in PD. [less ▲]

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See detailTopGen - Internet Router-Level Topology Generation Based on Technology Constraints
Scholtes, Ingo; Botev, Jean UL; Esch, Markus UL et al

in Proceedings of the 1st International Conference on Simulation Tools and Techniques for Communications, Networks and Systems (SIMUTools) (2008)

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See detailEmergency Group Calls over Interoperable Networks
Frank, Raphaël UL; Scherer, Thomas UL; Engel, Thomas UL

in Proceedings of the 11th IEEE International Conference on Computational Science and Engineering (2008)

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See detailUnraveling the nature of room temperature grain growth in nanocrystalline materials
Ames, M.; Markmann, J.; Karos, R. et al

in Acta Materialia (2008), 56

We report on the observation of real-time-resolved room temperature grain growth in nanocrystalline metals. We find that neither the time evolution of size can be modeled by standard growth theories nor ... [more ▼]

We report on the observation of real-time-resolved room temperature grain growth in nanocrystalline metals. We find that neither the time evolution of size can be modeled by standard growth theories nor are there any other systems aware to us that manifest a similar growth behaviour. We detect a transition from an initially self-similar slow growth to abnormal grain growth. Its onset seems to be associated with the simultaneous decrease of microstrain with increasing grain size. Abnormal grain growth is considered as a generic feature of nanocrystallinity but is a transient state since we observed in the late stage of coarsening, using orientational imaging microscopy, a monomodal grain size distribution. We empirically find a nonlinear-response-type of growth law which is in agreement with the observed coarsening kinetics. [less ▲]

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See detailCharacterization of CuInSe2 material and devices: comparison of thermal and electrochemically prepared absorber layers
Dale, Phillip UL; Samantilleke, A. P.; Zoppi, Guillaume et al

in Applied Physics Letters (2008), 41(8), 085105-085113

Detailed reference viewed: 137 (6 UL)