We present a computational evaluation of three hypotheses about sources of deficit in sentence comprehension in aphasia: slowed processing, intermittent deficiency, and resource reduction. The ACT-R based Lewis and Vasishth model is used to implement these three proposals. Slowed processing is implemented as slowed execution time of parse steps; intermittent deficiency as increased random noise in activation of elements in memory; and resource reduction as reduced spreading activation. As data, we considered subject vs. object relative sentences, presented in a self-paced (...) listening modality to 56 individuals with aphasia and 46 matched controls. The participants heard the sentences and carried out a picture verification task to decide on an interpretation of the sentence. These response accuracies are used to identify the best parameters that correspond to the three hypotheses mentioned above. We show that controls have more tightly clustered parameter values than IWA; specifically, compared to controls, among IWA there are more individuals with slow parsing times, high noise, and low spreading activation. We find that individual IWA show differential amounts of deficit along the three dimensions of slowed processing, intermittent deficiency, and resource reduction, overall, there is evidence for all three sources of deficit playing a role, and IWA have a more variable range of parameter values than controls. An important implication is that it may be meaningless to talk about sources of deficit with respect to an abstract verage IWA; the focus should be on the individual's differential degrees of deficit along different dimensions, and on understanding the causes of variability in deficit between participants. (shrink)

McGarvey (Econometrica, 21(4), 608–610, 1953) has shown that any irreflexive and anti-symmetric relation can be obtained as a relation induced by majority rule. We address the analogous issue for dominance relations of finite cooperative games with non-transferable utility (coalitional NTU games). We find any irreflexive relation over a finite set can be obtained as the dominance relation of some finite coalitional NTU game. We also show that any such dominance relation is induced by a non-cooperative game through β-effectivity. Dominance relations (...) obtainable through α-effectivity, however, have to comply with a more restrictive condition, which we refer to as the edge-mapping property. (shrink)

Ein eben erschienenes Buch „Der Typenbegriff im Lichte der neuen Logik“ (von C. Hempel und P. Oppenheim) wird zum Anlass genommen, methodologische Probleme der Verwendung von Typenbegriffen zu diskutieren. Drei verschiedene Arten von Attributen werden unterschieden : klassifizierende Merkmale, abstufbare Merkmale und Massgrössen. Abstuf- bare Begriffe können standardisiert werden. So entstandene Standards werden als Quasi-Typen bezeichnet. Echte Typen entstehen aus Merkmalkombinationen. Diese Kombinationen werden in einem Merkmalsraum vorgenommen mit Hilfe sogenannter Reduktionen. Drei Arten von Reduktionen werden unterschieden. Die für die (...) empirische Sozialforschung wichtigste Reduktion ist die pragmatische : sie fasst Klassen von Merkmalkombinationen so zusammen, wie es ein vorliegendes Erhebungsproblem erfordert. Im allgemeinen werden Typen intuitiv gebildet, und erst nachher wird die ihnen entsprechende Merkmalskombination aufgedeckt. Dieses Verfahren heisst Substruktion. An Beispielen wird seine Bedeutung für die Praxis dargestellt. Es wird betont, dass die typologischen Operationen (Reduktion, Substruktion und Transformationen) nichts darüber aussagen, was ein Typus ist und wie er gefunden wird. Sie weisen nur gewisse formale Eigenschaften auf, die allen typologischen Systemen gemeinsam sind.Un livre récemment paru „Le concept de type à la lumière de la nouvelle logique“ (de C. Hempel et P. Oppenheim : „Der Typenbegriff im Lichte der neuen Logik“ ) fournit Toccasion de discuter quelques-uns des problèmes que pose l'emploi des concepts de type. On distingue trois catégories de caractères : caractères classificatoires, caractères gradués et mesures de grandeur. Les concepts gradués peuvent être standardisés de telle manière que naissent des standards que l'on peut qualifier de quasi-types. Les types authentiques naissent par combinaison de caractères. Ces combinaisons s'opèrent dans un „lieu de caractères“ (Merkmalsraum) à l'aide d'un procédé nommé réduction. On distingue trois sortes de réduction. La réduction la plus importante pour la recherche sociale est la réduction pragmatique : elle embrasse des classes de caractères combinés en fonction des exigences d'une enquête donnée. En général, les types sont formés intuitivement, ensuite seulement on découvre la combinaison de caractères correspondante. Cette démarche s'appelle substruction. On en montre la signification pour la pratique dans une série d’exemples. On souligne que les opérations typologiques (réduction, substruction, transformations) ne nous permettent nullement de dire ce qu'est un type et comment il a été découvert. Elles indiquent seulement certains caractères formels qui sont communs à tous les systèmes typologiques. (shrink)

Social choice rules are often evaluated and compared by inquiring whether they satisfy certain desirable criteria such as the Condorcet criterion, which states that an alternative should always be chosen when more than half of the voters prefer it over any other alternative. Many of these criteria can be formulated in terms of choice sets that single out reasonable alternatives based on the preferences of the voters. In this paper, we consider choice sets whose definition merely relies on the pairwise (...) majority relation. These sets include the Copeland set, the Smith set, the Schwartz set, von Neumann-Morgenstern stable sets, the Banks set, and the Slater set. We investigate the relationships between these sets and completely characterize their computational complexity, which allows us to obtain hardness results for entire classes of social choice rules. (shrink)

GoalThis paper presents an immersive Virtual Reality system to analyze and train Executive Functions of soccer players. EFs are important cognitive functions for athletes. They are a relevant quality that distinguishes amateurs from professionals.MethodThe system is based on immersive technology, hence, the user interacts naturally and experiences a training session in a virtual world. The proposed system has a modular design supporting the extension of various so-called game modes. Game modes combine selected game mechanics with specific simulation content to target (...) particular training aspects. The system architecture decouples selection/parameterization and analysis of training sessions via a coaching app from an Unity3D-based VR simulation core. Monitoring of user performance and progress is recorded by a database that sends the necessary feedback to the coaching app for analysis.ResultsThe system is tested for VR-critical performance criteria to reveal the usefulness of a new interaction paradigm in the cognitive training and analysis of EFs. Subjective ratings for overall usability show that the design as VR application enhances the user experience compared to a traditional desktop app; whereas the new, unfamiliar interaction paradigm does not negatively impact the effort for using the application.ConclusionThe system can provide immersive training of EF in a fully virtual environment, eliminating potential distraction. It further provides an easy-to-use analyzes tool to compare user but also an automatic, adaptive training mode. (shrink)

The article analyses how contemporary Muslim theologians make use of the Continental hermeneutic tradition for a renewal of Koranic exegesis.

This article shows that Held's central philosophical concern is with the manner in which the withdrawal of world is apparent in kairological moments disclosed in fundamental moods. The phenomenology of world is for him a way of overcoming voluntarist nominalism. World is of its nature a limit to will and is experienced in the passivity of being acted upon. It is shown how Held emphasizes the common origins of philosophy and politics in the fundamental moods of wonder and awe. In (...) the final section it is argued - with reference to his more recent encounter with theological and scriptural themes - that Held's understanding of kairos and doxa is one-sided. By failing to account for the biblical transformation of both terms, especially St Paul's conception of the kairos as a suspension of world and by equating the Judaeo-Christian God with its voluntaristic conception, Held fails to give sufficient weight to the singularity of the kairos in the kenotic humbling of will implicit in the Christian notions of creation and incarnation. (shrink)

What does it mean to talk of the power of God in relation to the human self? The discourses generated by the Jewish and Christian tradition about the capacity for divinity have been mainly promulgated by men, and have more often than not served to exclude women cognitively, practically, and spiritually. As a result they have been made powerless in the face of God’s presence. It is possible to look to ideas developed in Hindu Tantra for comparative notions of power (...) (shakti) which can redeem the place of God for women. The path of divine consciousness is effectively illustrated by an imaginary and somatic awareness, by a devout attention to the play of light in the soul. In this paper I propose to read the assignment of energy and force within conceptions of divinity through the lens of a poststructuralist realization, using the work of Michel Foucault, Gilles Deleuze and Félix Guattari, and Luce Irigaray. This working paper is basically an exercise in metaphorical writing, and one reader has called it 'creative theology'. (shrink)

Georges Seurat, one of the most popular and admired of post-Impressionist painters, has been the focus of much attention in recent years. This book by Paul Smith views the artist in a new context and explodes some of the myths that have grown up about him. Challenging the assumption that Seurat's work was scientific or that it expressed a serious commitment to anarchism, Smith instead traces the painters involvement with the various factions of the avant-garde and shows that he (...) was perhaps the earliest exponent of Idealism in modern art. Smith studies contemporary interpretations of Impressionism and analyzes how the groups surrounding Seurat constructed meaning from his art. From this investigation he creates a portrait of Seurat as one who was willing to accept, even encourage, interpretations of his art that he may not have intended. Smith shows, for example, that the "scientific" account of Seurat's color first developed by Félix Fénéon actually represents the theory and practice of Pissaro. He examines Seurat's involvement with anarchist critics and concludes that he merely posed as a painter with left-wing sympathies in order to benefit from the publicity these writers gave him. He explains that Seurat was sympathetic to Symbolism from its very inception and that he and his early Symbolist critics developed a theory of his art that was founded on Schopenhauer and Wagner's ideas on art. And he explores the ways that Seurat focused on the musicality of art and on incorporating certain "musical" features in his work. Beautifully illustrated and engagingly written, this book presents a convincing new interpretation of the work of a major artist. (shrink)

SINGLE MAGNETIC NORTHPOLES AND SOUTPOLESAND THEIR IMPORTANCE FOR SCIENCETen lectures delivered at the University of Viennaduring the summer semester of 1947byDr. Felix EhrenhaftU. S. Visiting Profe...