915 resultados para quasi-copulas


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As nonprofits do not have access to the same capital markets as for-profit enterprises, organizations usually scramble for funding to keep up with their mission. This scenario can be changed through the use of the right financial engineering. This Work Project aims at studying an innovative financing mechanism based on the concept of quasi-equity for organizations devoted to social ends to cope with their capital needs. A quasi-equity investment model is built for the Portuguese social business SPEAK, and an in-depth assessment of its current financial, organizational and impact situations is conducted. This is a pioneer case study in Portugal.

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RESUMO - Estudos anteriores nos Cuidados de Saúde Primários (CSP) apontam para um incremento da Deteção Precoce (DP) e Intervenções Breves (IB) em pacientes com Problemas Ligados ao Álcool (PLA) após formação apropriada dos profissionais de saúde (com melhoria das suas atitudes). Este estudo quasi experimental, exploratório, é pioneiro no âmbito da Saúde Ocupacional (SO) para a implementação de Rastreio/DP e IB nos PLA. O objetivo principal foi avaliar se uma formação sobre Rastreio/DP e IB pode melhorar as atitudes dos profissionais de SO ao lidar com os PLA em Meio Laboral (PLAML). Foi aplicado um questionário em duas partes: Q1/pré-formação (variáveis sociodemográficas, profissionais, competências em alcoologia, experiência pessoal com álcool/familiares com PLA, dificuldades em lidar com trabalhadores com PLA, AUDIT-C e SAAPPQ) e Q2/pós-formação (avaliação da formação e das atitudes SAAPPQ - Adequação, Legitimidade, Motivação, Autoestima e Satisfação). Os resultados na amostra (N=39) revelaram um aumento sobretudo na Adequação e Satisfação. No entanto, naqueles com níveis baixos das atitudes pré-formação constou-se melhoria das atitudes à excepção da Autoestima e foram encontradas algumas associações com as características do perfil inicial dos participantes. Sugerem-se estudos posteriores para identificação de pacotes formativos mais efetivos e propostas para um Plano integrador de RIB para PLAML

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Monte Carlo Simulations were carried out using a nearest neighbour ferromagnetic XYmodel, on both 2-D and 3-D quasi-periodic lattices. In the case of 2-D, both the unfrustrated and frustrated XV-model were studied. For the unfrustrated 2-D XV-model, we have examined the magnetization, specific heat, linear susceptibility, helicity modulus and the derivative of the helicity modulus with respect to inverse temperature. The behaviour of all these quatities point to a Kosterlitz-Thouless transition occuring in temperature range Te == (1.0 -1.05) JlkB and with critical exponents that are consistent with previous results (obtained for crystalline lattices) . However, in the frustrated case, analysis of the spin glass susceptibility and EdwardsAnderson order parameter, in addition to the magnetization, specific heat and linear susceptibility, support a spin glass transition. In the case where the 'thin' rhombus is fully frustrated, a freezing transition occurs at Tf == 0.137 JlkB , which contradicts previous work suggesting the critical dimension of spin glasses to be de > 2 . In the 3-D systems, examination of the magnetization, specific heat and linear susceptibility reveal a conventional second order phase transition. Through a cumulant analysis and finite size scaling, a critical temperature of Te == (2.292 ± 0.003) JI kB and critical exponents of 0:' == 0.03 ± 0.03, f3 == 0.30 ± 0.01 and I == 1.31 ± 0.02 have been obtained.

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This project is a quasi-experimental study involving eight classrooms in two senior elementary schools in St. Catharines, Ontario which received a Project Business Program and were pre- and post-tested to determine the growth of knowledge acquisition in the area of business concepts. Four classrooms received a Project Business treatment while four classrooms acted as a control. The Project Business Program is sponsored by Junior Achievement of Canada; it occurred during a twelveweek period, February to May 1981, and is run by business consultants who, through Action, Dialogue and Career Exploration, teach children about economics and business related topics. The consultants were matched with teacher co-ordinators in whose classrooms they taught and with whom they discussed field trips, students, lesson planning, etc. The statistical analysis of pre- and post-test means revealed a significant statistical growth in the area of knowledge acquisition on the part of those students who received the Project Business Program. This confirms that Project Business makes a difference. A search of the literature appears to advocate economic programs like Project Business, whfch are broadly based, relevant and processoriented. This program recommends itself as a model for other areas of co-operative curricular interactions and as a bridge to future trends and as a result several fruitful areas of research are suggested.

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Copper arsenite CuAs2O4 and Copper antimonite CuSb2O4 are S=1/2 (Cu2+ 3d9 electronic configuration) quasi-one-dimensional quantum spin-chain compounds. Both compounds crystallize with tetragonal structures containing edge sharing CuO6 octahedra chains which experience Jahn-Teller distortions. The basal planes of the octahedra link together to form CuO2 ribbon-chains which harbor Cu2+ spin-chains. These compounds are magnetically frustrated with competing nearest-neighbour and next-nearest-neighbour intrachain spin-exchange interactions. Despite the similarities between CuAs2O4 and CuSb2O4, they exhibit very different magnetic properties. In this thesis work, the physical properties of CuAs2O4 and CuSb2O4 are investigated using a variety of experimental techniques which include x-ray diffraction, magnetic susceptibility measurements, heat capacity measurements, Raman spectroscopy, electron paramagnetic resonance, neutron diffraction, and dielectric capacitance measurements. CuAs2O4 exhibits dominant ferromagnetic nearest-neighbour and weaker antiferromagnetic next-nearest-neighbour intrachain spin-exchange interactions. The ratio of the intrachain interactions amounts to Jnn/Jnnn = -4.1. CuAs2O4 was found to order with a ferromagnetic groundstate below TC = 7.4 K. An extensive physical characterization of the magnetic and structural properties of CuAs2O4 was carried out. Under the effect of hydrostatic pressure, CuAs2O4 was found to undergo a structural phase transition at 9 GPa to a new spin-chain structure. The structural phase transition is accompanied by a severe alteration of the magnetic properties. The high-pressure phase exhibits dominant ferromagnetic next-nearest-neighbour spin-exchange interactions and weaker ferromagnetic nearest-neighbour interactions. The ratio of the intrachain interactions in the high-pressure phase was found to be Jnn/Jnnn = 0.3. Structural and magnetic characterizations under hydrostatic pressure are reported and a relationship between the structural and magnetic properties was established. CuSb2O4 orders antiferromagnetically below TN = 1.8 K with an incommensurate helicoidal magnetic structure. CuSb2O4 is characterized by ferromagnetic nearest-neighbour and antiferromagnetic next-nearest-neighbour spin-exchange interactions with Jnn/Jnnn = -1.8. A (H, T) magnetic phase diagram was constructed using low-temperature magnetization and heat capacity measurements. The resulting phase diagram contains multiple phases as a consequence of the strong intrachain magnetic frustration. Indications of ferroelectricity were observed in the incommensurate antiferromagnetic phase.

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We characterize Paretian quasi-orders in the two-agent continuous case.

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Affiliation: Louise Potvin: Groupe de recherche interdisciplinaire en santé, Faculté de médecine, Université de Montréal

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We examine properties of binary relations that complement quasi-transitivity and Suzumura consistency in the sense that they, together with the original axiom(s), are equivalent to transitivity. In general, the conjunction of quasi-transitivity and Suzumura consistency is strictly weaker than transitivity but in the case of collective choice rules that satisfy further properties, the conjunction of quasi- transitivity and Suzumura consistency implies transitivity of the social relation. We prove this observation by characterizing the Pareto rule as the only collective choice rule such that collective preference relations are quasi-transitive and Suzumura consistent but not necessarily complete.

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Cette mémoire est une analyse du subtexte immanent dans le roman « 1979 » (2001) de Christian Kracht, auteur suisse, qui est le plus connu pour son début « Faserland » (1995). Ces oeuvres sont situées dans le mouvement de la littérature Pop allemande des années 1990 et en résultent en même temps. Dans ce contexte, le climat socio-politique après la réunification, notamment le Literaturstreit, jouera un rôle important dans mon interprétation comme fond de la poésie de Kracht. J’exposerai les difficultés que le discours de la littérature Pop porte en ce qui concerne l’œuvre de cet auteur, qui, même s’il est vu en général comme fondateur de ce genre littéraire en Allemagne, ne considère pas ses textes comme littérature Pop dans ses déclarations notoirement problématiques. Je devrais objecter que Kracht est en combat avec la littérature Pop d’une façon stylistique et pas rarement ironique, ce qui traverse la définition étroite dominante. Il fait cela en adoptant sur l’un côté le trait le plus signifiant du genre, à savoir le caractère superficiel extrêmement descriptif et en transmettant sur l’autre côté un message moral profond, ce qui rend impossible la classification de ses textes comme Pop, signifiant seulement le divertissement ou l’archivisme de Moritz Bassler. En fait, la fréquence de signifiants de Pop dans les textes de Kracht créent par leur arrangement un réseau de sens qui, dans le paradigme post- moderne, peut être décrit le mieux avec le terme « rhizome » de Gilles Deleuze et Félix Guattari. En faisant ça, Kracht suit une autre tradition qui traverse les limites de la littérature Pop, comme il se sert de la décadence, de l’esthétisme et du symbolisme du fin-du-siècle d’un Hugo von Hofmannsthal, d’un Stefan George et d’un Joris-Karl Huysmans avec leurs pointes de mise en garde contre les déficits du modernisme, du libéralisme et du capitalisme, d’une façon nommée « fondamentalisme esthétique » par le sociologiste Stefan Breuer. Cette recherche se référera aux interprétations originales des textes source, aux évaluations de littérature d’accompagnement, à savoir des manuels scolaires en critique littéraire, en sociologie et en histoire allemande, aux comptes rendu, dissertations et entrevues et aux textes philosophiques. Cette mémoire est écrit en allemand.