Positivity results for the Hecke algebras of non-crystallographic finite Coxeter groups

This paper is a report on a computer check of some positivity properties of the Hecke algebra in type H4, including the non-negativity of the coefficients of the structure constants in the Kazhdan-Lusztig basis. This answers a long-standing question of Lusztig's. The same algorithm, carried out by hand, also allows us to deal with the case of dihedral Coxeter groups.Comment: septembre 2005; 13 pages; cet article s'accompagne d'un logicie

Lagrangian transport of moisture in the atmosphere and floating plastic in the ocean

This thesis focuses on the study of Lagrangian transport in different types of fluids. The aim of this work is to explore interactions between particles and fluids in two different areas of science; oceanography and meteorology. Different practical applications, such as the movement of plastics in the ocean and the transport of moisture in the atmosphere, will be examined in both study areas. To do this, we will explore the use of numerical Lagrangian models to validate results and test new hypotheses

Professional Development Experiences of Southern California Elementary School Teachers

Many researchers have concluded that teachers\u27 frustration with the lack of quality teacher professional development can be addressed by acknowledging teachers\u27 voices and involving them in the planning and design of their professional development. The purpose of this basic qualitative study was to explore 3rd through 5th grade elementary teachers\u27 experiences with professional development in their schools or in their district in Southern California. Hargreaves and Fullan\u27s concept of professional capital and Shulman\u27s construct of knowledge growth in teaching provided the conceptual framework for this study. The research questions that framed the interview protocol for this study focused on teachers\u27 experiences and ideas for professional development. Open coding of interviews with 8 teachers determined common words, phrases, or sentences and constant comparison determined emergent themes. Findings that emerged were that district professional development lacked continuity and was experienced as overwhelming, ineffective, inadequate, and often insufficient. Teachers perceived that their needs were seldom met and their involvement in the planning and design of professional development was limited. The elementary teachers desire reflective processing time to become masters of their craft, as well as active involvement in planning and designing their professional development. This study may contribute to positive social change by providing insight to professional development designers that teachers desire involvement in planning training with more engagement and higher levels of learning which can contribute to improved student outcomes. Collaboration such as that found in professional learning communities could accomplish this goal

A guide to motivating students to twist to better spelling

Students learn and retain more when they enjoy the process or avenue of learning. Students have fun learning to spell when visual, auditory, and hands-on learning are included in the process. In addition, the intervention project can be used to support and assist second language learners. The benefits from this intervention project will not only strengthen students\u27 phonemic and spelling foundation, but will also enhance their reading comprehension and writing effectiveness

Deforming Maps for Lie Group Covariant Creation and Annihilation Operators

Any deformation of a Weyl or Clifford algebra A can be realized through a `deforming map', i.e. a formal change of generators in A. This is true in particular if A is covariant under a Lie algebra g and its deformation is induced by some triangular deformation $U_h g$ of the Hopf algebra $Ug$. We propose a systematic method to construct all the corresponding deforming maps, together with the corresponding realizations of the action of $U_h g$. The method is then generalized and explicitly applied to the case that $U_h g$ is the quantum group $U_h sl(2)$. A preliminary study of the status of deforming maps at the representation level shows in particular that `deformed' Fock representations induced by a compact $U_h g$ can be interpreted as standard `undeformed' Fock representations describing particles with ordinary Bose or Fermi statistics.Comment: Latex file, 26 pages, no figures. Extended changes. Final Version to appear in J. Math. Phy

Schwartz functions on Nash manifolds

In this paper we extend the notions of Schwartz functions, tempered functions and generalized Schwartz functions to Nash (i.e. smooth semi-algebraic) manifolds. We reprove for this case classically known properties of Schwartz functions on $R^n$ and build some additional tools which are important in representation theory.Comment: 35 pages, LaTex. v3:minor changes + reference to results of duClou

Développement de PCRs multiplexes pour le diagnostic : microarrays analytiques

The work reported in this thesis follows the one undertaken by Ms LE GOFF. It is focused on HIFI technology, which is patented and developed during her thesis. The first part of this work concerns the HIFI Blood 96™ test, and particularly the improvements and developments adduced to the test to make it a real diagnostic tool, multiparametric and high-throughput which can be implemented in blood banks in order to constitute negative antigen inventories, thus contributing to improve blood safety. It allows to characterize 96 samples on 15 polymorphisms (divided in two panels) associated to blood group systems in approximately 4.5 hours. A mesoscale validation study has been conducted on 583 samples for panel 1 and 190 samples for panel 2. The second part of this work describes the adaptation of HIFI technology applied to diagnosis of respiratory tract infections, with the development of another platform, ReSynPlex, in partnership with 3 research teams in GrenobleLes travaux présentés dans cette thèse font suite à celle de Melle LE GOFF. Ils se concentrent sur la technologie HIFI brevetée et développée pendant ses travaux. Une première partie du travail présenté dans ce manuscrit concerne le test HIFI Blood 96™ et plus particulièrement les améliorations et les évolutions apportées au test afin d'en faire un véritable outil de génotypage, multiparamétrique et haut-débit pouvant être installé dans les banques de sang dans le but de constituer des inventaires de sang génotypé de façon étendue, participant ainsi à améliorer la sécurité transfusionnelle. Il permet de caractériser 96 échantillons sur 15 polymorphismes (divisés en deux panels) associés aux groupes sanguins en approximativement 4h30. Cette plateforme a fait l'objet d'une étude de validation à moyenne échelle sur 583 donneurs pour le panel 1 et 190 donneurs pour le panel 2. La deuxième partie des travaux décrit l'adaptation de la technologie HIFI appliquée au diagnostic des pathologies respiratoires, avec le développement d'une autre plateforme, ReSynPlex, en partenariat avec 3 équipes de recherche de Grenobl

q-Deforming Maps for Lie Group Covariant Heisenberg Algebras

We briefly summarize our systematic construction procedure of q-deforming maps for Lie group covariant Weyl or Clifford algebras.Comment: latex file, 4 pages. Contribution to the proceedings of the 5th Wigner Symposium. Slight modification

O ensino por competências como futuro da educação: uma revisão de literatura / Skills teaching as the futurem of education: a literature review

Nas últimas décadas, o conceito de competências tem ganhado espaço no campo educacional, encontrando neste campo território fértil para um desenvolvimento promissor. Contudo, não tem sido integrado de forma acrítica, suscitando, por outro lado, inúmeros debates e divergências. Recorrendo a metodologia de revisão bibliográfica, este texto pretende contribuir para o escopo das discussões sobre os sentidos e significados assumidos pela noção de competências no contexto da Educação, bem como sinalizar para seus principais desafios e proposições. A literatura tem chamado atenção para as possibilidades de uma abordagem curricular por competências, cuja potencialidade permite enfrentar com certo nível de êxito situações excepcionais e oferecer ferramentas para explorar e agir frente ao desconhecido

Conflits d’objectifs – canon et appropriation culturelle

Entretien entre Géraldine Cloux, ancienne de la section Musique de la HKB, Madeleine Amsler, co-responsable de la filière Fine Arts et Murat Temel, étudiant à la HKB, qui rejoint les deux intervenantes à la minute 14