21,004,084 research outputs found

    Auxiliary selection and counterfactuality in the history of English and Germanic

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    The retreat of BE as perfect auxiliary in the history of English is examined. Corpus data are presented showing that the initial advance of HAVE was most closely connected to a restriction against BE in past counterfactuals. Other factors which have been reported to favor the spread of HAVE are either dependent on the counterfactual effect, or significantly weaker in comparison. It is argued that the effect can be traced to the semantics of the BE perfect, which denoted resultativity rather than anteriority proper. Related data from other older Germanic and Romance languages are presented, and finally implications for existing theories of auxiliary selection stemming from the findings presented are discussed

    Focus at the interface: Evidence from Romance and Bantu

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    Syntacticizing blends : the case of English wh-raising

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    This paper aims at analysing English structures in which a wh-moved subject triggers agreement both in the clause it is extracted from and in the immediately higher clause. This pattern is only accepted by some native speakers, and it is also attested in corpora. Although the relevant structures could at first sight be analysed as extragrammatical ‘blends’, we propose that they are in fact part of certain speakers’ linguistic competence, and hence generated by the grammar of those speakers. Adopting the approach to subject extraction developed in Rizzi & Shlonsky (2007), we suggest that extracted subjects can exceptionally be ‘hyperactive’ (Carstens 2011), and thus take part in A-relations (case and agreement) in more than one clausal domai

    Concepts of structural underspecification in Bantu and Romance

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    The True Destination of EGO is Multi-local Optimization

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    Efficient global optimization is a popular algorithm for the optimization of expensive multimodal black-box functions. One important reason for its popularity is its theoretical foundation of global convergence. However, as the budgets in expensive optimization are very small, the asymptotic properties only play a minor role and the algorithm sometimes comes off badly in experimental comparisons. Many alternative variants have therefore been proposed over the years. In this work, we show experimentally that the algorithm instead has its strength in a setting where multiple optima are to be identified

    Single breath-hold 3D measurement of left atrial volume using compressed sensing cardiovascular magnetic resonance and a non-model-based reconstruction approach

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    Background:Left atrial (LA) dilatation is associated with a large variety of cardiac diseases. Current cardiovascular magnetic resonance (CMR) strategies to measure LA volumes are based on multi-breath-hold multi-slice acquisitions, which are time-consuming and susceptible to misregistration.Aim:To develop a time-efficient single breath-hold 3D CMR acquisition and reconstruction method to precisely measure LA volumes and function.Methods:A highly accelerated compressed-sensing multi-slice cine sequence (CS-cineCMR) was combined with a non-model-based 3D reconstruction method to measure LA volumes with high temporal and spatial resolution during a single breath-hold. This approach was validated in LA phantoms of different shapes and applied in 3 patients. In addition, the influence of slice orientations on accuracy was evaluated in the LA phantoms for the new approach in comparison with a conventional model-based biplane area-length reconstruction. As a reference in patients, a self-navigated high-resolution whole-heart 3D dataset (3D-HR-CMR) was acquired during mid-diastole to yield accurate LA volumes.Results:Phantom studies. LA volumes were accurately measured by CS-cineCMR with a mean difference of −4.73 ± 1.75 ml (−8.67 ± 3.54 %, rÂČ = 0.94). For the new method the calculated volumes were not significantly different when different orientations of the CS-cineCMR slices were applied to cover the LA phantoms. Long-axis “aligned” vs “not aligned” with the phantom long-axis yielded similar differences vs the reference volume (−4.87 ± 1.73 ml vs −4.45 ± 1.97 ml, p = 0.67) and short-axis “perpendicular” vs “not-perpendicular” with the LA long-axis (−4.72 ± 1.66 ml vs −4.75 ± 2.13 ml; p = 0.98). The conventional bi-plane area-length method was susceptible for slice orientations (p = 0.0085 for the interaction of “slice orientation” and “reconstruction technique”, 2-way ANOVA for repeated measures). To use the 3D-HR-CMR as the reference for LA volumes in patients, it was validated in the LA phantoms (mean difference: −1.37 ± 1.35 ml, −2.38 ± 2.44 %, rÂČ = 0.97). Patient study: The CS-cineCMR LA volumes of the mid-diastolic frame matched closely with the reference LA volume (measured by 3D-HR-CMR) with a difference of −2.66 ± 6.5 ml (3.0 % underestimation; true LA volumes: 63 ml, 62 ml, and 395 ml). Finally, a high intra- and inter-observer agreement for maximal and minimal LA volume measurement is also shown.Conclusions:The proposed method combines a highly accelerated single-breathhold compressed-sensing multi-slice CMR technique with a non-model-based 3D reconstruction to accurately and reproducibly measure LA volumes and function

    L'hygiĂšne des mains: oĂč en sommes-nous aujourd'hui ? : travail de Bachelor

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    Contexte L’hygiĂšne des mains est devenue sous l’impulsion de la campagne de l’Organisation Mondiale de la SantĂ© (OMS) un concept majeur de la sĂ©curitĂ© des patients. Avec la publication de la stratĂ©gie multimodale en 2010 opĂ©rer au sein des Ă©tablissements de soins les changements de pratique devrait ĂȘtre plus facilitĂ©. Objectifs Nous proposons Ă  travers une revue de la littĂ©rature les facteurs favorisant le changement de pratique de l’hygiĂšne des mains avec la mise en oeuvre de la stratĂ©gie multimodale de l’OMS. MĂ©thode Nous avons conduit une revue de la littĂ©rature dans les bases de donnĂ©es Pubmed, Cinhal sur les quatorze derniĂšres annĂ©es. RĂ©sultats Nous avons retenu 10 articles de recherche. Ces derniers ont dĂ©montrĂ© trois rĂ©sultats significatifs. Le premier, concernant le taux d’observance de l’hygiĂšne des mains grĂące Ă  la mise en place d’une structure multimodale calquĂ©e sur celle l’OMS. Le second, examine la mise en place d’un outil d’évaluation de cette structure. Le dernier, observe l’augmentation de la durĂ©e du taux d’observance grĂące Ă  l’ajout de la notion de leadership au sein d’une structure multimodale. Perspectives L’incorporation de la notion de leadership et d’un rappel des 5 outils de la structure multimodale pourraient augmenter le taux d’observance d’hygiĂšne des mains sur un plus long terme
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