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See detailFace inversion disrupts the perception of vertical relations between features in the right human occipito-temporal cortex
Goffaux, Valerie; Rossion, Bruno; Sorger, Bettina et al

in Journal of Neuropsychology (2009), 3

The impact of inversion on the extraction of relational and featural face information was investigated in two fMRI experiments. Unlike previous studies, the contribution of horizontal and vertical spatial ... [more ▼]

The impact of inversion on the extraction of relational and featural face information was investigated in two fMRI experiments. Unlike previous studies, the contribution of horizontal and vertical spatial relations were considered separately since they have been shown to be differentially vulnerable to face inversion (Goffaux & Rossion, 2007). Hence, inversion largely affects the perception of vertical relations (e.g. eye or mouth height) while the processing of features (e.g. eye shape and surface) and of horizontal relations (e.g. inter-ocular distance) is affected to a far lesser extent. Participants viewed pairs of faces that differed either at the level of one local feature (i.e. the eyes) or of the spatial relations of this feature with adjacent features. Changes of spatial relations were divided into two conditions, depending on the vertical or horizontal axis of the modifications. These stimulus conditions were presented in separate blocks in the first (block) experiment while they were presented in a random order in the second event-related (ER) experiment. Face-preferring voxels located in the right-lateralized middle fusiform gyrus (rMFG) largely decreased their activity with inversion. Inversion-related decreases were more moderate in left-lateralized middle fusiform gyrus (lMFG). ER experiment revealed that inversion affected rMFG and lMFG activity in distinct stimulus conditions. Whereas inversion affected lMFG processing only in featural condition, inversion selectively affected the processing of vertical relations in rMFG. Correlation analyses further indicated that the inversion effect (IE) observed in rMFG and right inferior occipital gyrus (rIOG) reliably predicted the large behavioural IE observed for the processing of vertical relations. In contrast, lMFG IE correlated with the weak behavioural IE observed for the processing of horizontal relations. Our findings suggest that face configuration is mostly encoded in rMFG, whereas more local aspects of face information, such as features and horizontal spatial relations drive lMFG processing. These findings corroborate the view that the vulnerability of face perception to inversion stems mainly from the disrupted processing of vertical face relations in the right-lateralized network of face-preferring regions (rMFG, rIOG). [less ▲]

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See detailReduced feedback SDMA based on subspace packings
Svedman, Patrick; Jorswieck, Eduard A.; Ottersten, Björn UL

in IEEE Transactions on Wireless Communications (2009), 8(3), 13291339

Herein, we treat Space Division Multiple Access (SDMA) based on partial channel state information and limited feedback. We propose a novel framework utilizing subspace packings, where beamforming ... [more ▼]

Herein, we treat Space Division Multiple Access (SDMA) based on partial channel state information and limited feedback. We propose a novel framework utilizing subspace packings, where beamforming, feedback, and scheduling are integrated. Advantages of the proposed framework are that the fed back supportable rates are based on the post-scheduling SINR and that the feedback implicitly contains information about the spatial compatibility of the users. The feasibility region of packings of different dimensions is indicated by the allocation outage probability which is derived. Grassmannian subspace packings, DFT-based packings, and non-orthogonal Grassmannian packings are formulated and studied as candidates. Numerical simulations show better performance for the proposed scheme compared to conventional channel quantization at the receiver with zero-forcing transmission in i.i.d. Rayleigh fading. Finally, we propose and evaluate a beam-graph method to further reduce the feedback load, that can be used in the context of tracking quantized beamformers. [less ▲]

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See detailEntwicklung eines Fragebogens für die Peer-Evaluation von studentischen Referaten
Mitschke, T.; Oberfeld, D.; Kemper, Christoph UL

Poster (2009, March)

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See detailUrteilsfehler in der schulischen Leistungsbeurteilung: Der Einfluss von Verarbeitungszielen und Expertise
Gräsel, Cornelia; Krolak-Schwerdt, Sabine UL; Dünnebier, Katrin et al

Scientific Conference (2009, March)

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See detailRe-Thinking the Writer’s Role: Enzensberger and Cuba or A Story of Self-Censorship
Marmulla, Henning UL

Presentation (2009, February 27)

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See detailWohlstand jenseits des Einkommens. Der „Capabilities“-Ansatz in Bildungs- und Gesundheitswesen bewertet Teilhabe an der Gesellschaft
Powell, Justin J W UL; Rosenbrock, Rolf

Article for general public (2009)

Würde sich der Wohlstand einer Gesellschaft am Bruttoinlandsprodukt pro Kopf bemessen, hätte das Emirat Katar international die Nase vorn, gefolgt von Luxemburg und Norwegen. Rang vier würde das Sultanat ... [more ▼]

Würde sich der Wohlstand einer Gesellschaft am Bruttoinlandsprodukt pro Kopf bemessen, hätte das Emirat Katar international die Nase vorn, gefolgt von Luxemburg und Norwegen. Rang vier würde das Sultanat Brunei auf der Insel Borneo belegen, wo seit 1988 Parteien verboten sind und der Sultan per Dekret regiert. Ganz so einfach sollte man es sich mit der Wohlstandsmessung nicht machen. Um den Reichtum einer Gesellschaft vergleichend zu beurteilen, bedarf es weiterer Kriterien. Die Suche nach dem guten Leben beschäftigt Philosophen seit Platon und Aristoteles. Auch heute mangelt es unter Sozialwissenschaftlern nicht an Theorien der Gerechtigkeit. Der Ökonomie-Nobelpreisträger Amartya Sen und die Rechtsphilosophin und diesjährige A.SK-Preisträgerin Martha Nussbaum haben einen ganz eigenen Maßstab entwickelt, um den Zustand eines Gemeinwesens zu prüfen - weit über ökonomische Kennzahlen hinaus. Kann ein Mensch ein Leben führen, für das er sich aus guten Gründen entschieden hat und das seine Selbstachtung garantiert, fragen sie. Kann er sich bilden, arbeiten und politisch engagieren? Hat er Zugang zum Gesundheitssystem? Steht ihm angemessener Wohnraum zu Verfügung? Verwirklichungschancen (capabilities) haben Sen und Nussbaum ihren Ansatz genannt. Dahinter steckt eine zweifache Annahme: Der Einzelne ist seines Glückes Schmied, aber sein Leben gelingt nur in dem Maße, wie die Gesellschaft ihn dabei unterstützt. [less ▲]

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See detailKompetenzdiagnostik in der empirischen Bildungsforschung
Greiff, Samuel UL

Presentation (2009, February 16)

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See detailAnalyse de fiabilité des systèmes semicohérents et description par des polynômes latticiels
Dukhovny, Alexander; Marichal, Jean-Luc UL

Scientific Conference (2009, February 10)

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See detailSynthesis and characterization of Cu2ZnSnS4 absorber layers by an electrdeposition-annealing route
Scragg, Jonathan J.; Dale, Phillip UL; Peter, Laurence M.

in Thin Solid Films (2009), 517(7), 2481-2484

An electrodeposition-annealing route to films of the promising p-type absorber material Cu2ZnSnS4 (CZTS) using layered metal precursors is studied. The dependence of device performance on composition is ... [more ▼]

An electrodeposition-annealing route to films of the promising p-type absorber material Cu2ZnSnS4 (CZTS) using layered metal precursors is studied. The dependence of device performance on composition is investigated, and it is shown that a considerable Cu-deficiency is desirable to produce effective material, as measured by photoelectrochemical measurements employing the Eu3+/2+ redox couple. The differing effects of using elemental sulphur and H2S as sulphur sources during annealing are also studied, and it is demonstrated that H2S annealing results in films with improved crystallinity. [less ▲]

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See detailInside the Serbian war machine: The Milošević intercepts, 1991-1992
Glaurdic, Josip UL

in East European Politics & Societies (2009), 23(1), 86-104

This article examines the arguably most interesting pieces of evidence used during the trial of Slobodan Milošević at the International Criminal Tribunal for the former Yugoslavia—more than two hundred ... [more ▼]

This article examines the arguably most interesting pieces of evidence used during the trial of Slobodan Milošević at the International Criminal Tribunal for the former Yugoslavia—more than two hundred recordings of intercepted conversations that took place in 1991 and 1992 between Milošević, Radovan Karadžić, Dobrica Ćosić, and various other protagonists on the Serbian side of the wars in Croatia and Bosnia and Herzegovina (BiH). Analysis of the intercepts presented in this article makes several important contributions to the interpretation of events in former Yugoslavia during that period. First, it identifies the ideological foundations of Milošević-led Serbian war campaigns in the political influence of Dobrica Ćosić and his platform of “unification of Serbs.” Second, it contributes to the vigorous debate regarding the possible deal between Milošević and the Croatian president Franjo Tuđman for the division of BiH. It confirms that negotiations took place, but that Milošević and his associates had no intention of respecting any agreement and wanted the whole of BiH until at least late 1991. Third, it provides indications that Milošević held the position of the de facto commander-in-chief in the operations of the Yugoslav People's Army in Croatia and BiH. And fourth, it establishes that the two institutions of force Milošević had direct legal control over—Serbia's State Security Service and Ministry of Interior—were his principal means of control over Croatian and Bosnian Serbs and instruments in the aggression against BiH even after its international recognition. [less ▲]

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See detailWitness, Testimony, and Perjury in Egyptian Legal System
Al Hajjaji, Shams Al Din UL

Presentation (2009, February)

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See detailRecent windmusic Manuscripts of Luxemburgian „National“ composer Laurent Menager
Sagrillo, Damien UL

in IGEB Mitteilungsblatt (2009)

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See detailCharacterizations of discrete Sugeno integrals as lattice polynomial functions
Couceiro, Miguel UL; Marichal, Jean-Luc UL

in Bodenhofer, Ulrich; De Baets, Bernard; Klement, Erich Peter (Eds.) et al Proc. 30th Linz Seminar on Fuzzy Set Theory (LINZ 2009): The Legacy of 30 Seminars – Where Do We Stand and Where Do We Go? (2009, February)

We survey recent characterizations of the class of lattice polynomial functions and of the subclass of discrete Sugeno integrals defined on bounded chains.

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See detailInfinitary aggregation
Pap, Endre; Mesiar, Radko; Grabisch, Michel et al

in Bodenhofer, Ulrich; De Baets, Bernard; Klement, Erich Peter (Eds.) et al Proc. 30th Linz Seminar on Fuzzy Set Theory (LINZ 2009): The Legacy of 30 Seminars – Where Do We Stand and Where Do We Go? (2009, February)

In this paper, based on [12, 18], we present infinitary aggregation functions on sequences possessing some a priori given properties. General infinitary aggregation is also discussed, and the connection ... [more ▼]

In this paper, based on [12, 18], we present infinitary aggregation functions on sequences possessing some a priori given properties. General infinitary aggregation is also discussed, and the connection with integrals, e.g., Lebesgue, Choquet and Sugeno integrals, is given. [less ▲]

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See detailContribution on some construction methods for aggregation functions
Mesiar, Radko; Pap, Endre; Grabisch, Michel et al

in Bodenhofer, Ulrich; De Baets, Bernard; Klement, Erich Peter (Eds.) et al Proc. 30th Linz Seminar on Fuzzy Set Theory (LINZ 2009): The Legacy of 30 Seminars – Where Do We Stand and Where Do We Go? (2009, February)

In this paper, based on [14], we present some well established construction methods for aggregation functions as well as some new ones.

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See detailAggregation on bipolar scales
Grabisch, Michel; Marichal, Jean-Luc UL; Mesiar, Radko et al

in Bodenhofer, Ulrich; De Baets, Bernard; Klement, Erich Peter (Eds.) et al Proc. 30th Linz Seminar on Fuzzy Set Theory (LINZ 2009): The Legacy of 30 Seminars – Where Do We Stand and Where Do We Go? (2009, February)

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See detailDie Wirkung von selbst- versus fremdgesteuertem extrinsischen Feedback und einer perzeptiv-supraposturalen Aufgabe auf die Optimierung der Gleichgewichtsleistung
Bund, Andreas UL; Altmeppen, Manuel; Lippens, Volker

in Nagel, V.; Lippens, V. (Eds.) Gleichgewichtsleistungen im Handlungsbezug. Aktuelle Arbeiten aus der Gleichgewichtsforschung (2009)

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See detailBehavioral analysis of aggregation functions
Marichal, Jean-Luc UL; Grabisch, Michel; Mesiar, Radko et al

in Bodenhofer, Ulrich; De Baets, Bernard; Klement, Erich Peter (Eds.) et al Proc. 30th Linz Seminar on Fuzzy Set Theory (LINZ 2009): The Legacy of 30 Seminars – Where Do We Stand and Where Do We Go? (2009, February)

Detailed reference viewed: 114 (2 UL)