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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Studies in Swedish Sign Language : Reference, Real Space Blending, and Interpretation

Nilsson, Anna-Lena January 2010 (has links)
This thesis comprises four separate studies of the same material: a ten-minute Swedish Sign Language monologue. Study I describes the form, meaning, and use of the sign INDEX-c, a pointing toward the chest traditionally described as a first person pronoun. It is argued that INDEX-c is used not only with specific reference to the signer or a quoted signer, but also with non-specific reference. Contrary to what has been reported, INDEX-c is used not only for constructed dialogue, but also in constructed action. The analysis reveals two separate forms, as well, labeled as reduced INDEX-c and distinct INDEX-c, respectively. Study II describes the activities of the non-dominant hand when it is not part of a two-handed sign. A continuum is suggested, moving from different rest positions that do not contribute to the discourse content, via mirroring of the dominant hand, for example, to instances where the non-dominant hand produces signs of its own while the dominant hand remains inactive, i.e. dominance reversal. Several of the activities of the non-dominant hand, including the four types of buoys that are described, help structure the discourse by indicating the current topic. Study III uses Mental Space Theory and Conceptual Blending Theory to describe the use of signing space for reference. A correlation is shown between discourse content and the area in the signing space toward which signs are meaningfully directed, and also between these directions and which types of Real Space blends the signer mainly uses: token blends or surrogate blends. Finally Study IV looks in more detail at three segments of the discourse and their Real Space blend structure. An initial analysis of eight interpretations into spoken Swedish is also conducted, focusing on whether preselected content units (discourse entities and relations) are identified. A large number of Real Space blends and blended entities are argued to result in less successful renditions measured in terms of preselected content units. / För att köpa boken skicka en beställning till exp@ling.su.se/ To order the book send an e-mail to exp@ling.su.se
22

Modélisation quantochimiques des forces de dispersion de London par la méthode des phases aléatoires (RPA) : développements méthodologiques / Quantum chemical studies of London dispersion forces by the random phase approximation (RPA) : methodological developments.

Mussard, Bastien 13 December 2013 (has links)
Dans cette thèse sont montrés des développements de l'approximation de la phase aléatoire (RPA) dans le contexte de théories à séparation de portée. On présente des travaux sur le formalisme de la RPA en général, et en particulier sur le formalisme "matrice diélectrique" qui est exploré de manière systématique. On montre un résumé d'un travail sur les équations RPA dans le contexte d'orbitales localisées, notamment des développements des orbitales virtuelles localisées que sont les "orbitales oscillantes projetées" (POO). Un programme a été écrit pour calculer des fonctions telles que le trou de d'échange, la fonction de réponse, etc... sur des grilles de l'espace réel (grilles parallélépipédiques ou de type "DFT"). On montre certaines de ces visualisations. Dans l'espace réel, on expose une adaptation de l'approximation du dénominateur effectif (EED), développée originellement dans l'espace réciproque en physique du solide. Également, les gradients analytiques des énergies de corrélation RPA dans le contexte de la séparation de portée sont dérivés. Le formalisme développé ici à l'aide d'un lagrangien permet une dérivation tout-en-un des termes courte- et longue-portée qui émergent dans les expressions du gradient, et qui montrent un parallèle intéressant. Des applications sont montrées, telles que des optimisations de géométries aux niveaux RSH-dRPA-I et RSH-SOSEX d'un ensemble de 16 petites molécules, ou encore le calcul et la visualisation des densités corrélées au niveau RSH-dRPA-I / In this thesis are shown developments in the random phase approximation (RPA) in the context of range-separated theories. We present advances in the formalism of the RPA in general, and particularly in the "dielectric matrix" formulation of RPA, which is explored in details. We show a summary of a work on the RPA equations with localized orbitals, especially developments of the virtual localized orbitals that are the "projected oscillatory orbitals" (POO). A program has been written to calculate functions such as the exchange hole, the response function, etc... on real space grid (parallelepipedic or of the "DFT" type) ; some of those visualizations are shown here. In the real space, we offer an adaptation of the effective energy denominator approximation (EED), originally developed in the reciprocal space in solid physics. The analytical gradients of the RPA correlation energies in the context of range separation has been derived. The formalism developed here with a Lagrangian allows an all-in-one derivation of the short- and long-range terms that emerge in the expressions of the gradient. These terms show interesting parallels. Geometry optimizations at the RSH-dRPA-I and RSH-SOSEX levels on a set of 16 molecules are shown, as well as calculations and visualizations of correlated densities at the RSH-dRPA-I level

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