998 resultados para Optical instrument transformer


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La présente contribution propose l'étude d'un dispositif de financement par projet particulier : les projets de coopération et d'innovation. Cette étude vise à analyser la manière dont les contraintes propres à ce type d'instrument sont légitimées par la Confédération et appréhendées par les chercheurs-enseignants financés par cet instrument. L'analyse menée montre les difficultés rencontrées par la Confédération à modifier les institutions académiques, malgré une plus grande légitimité acquise ces dernières années à intervenir dans ce domaine d'action publique.

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Actualment, és cada vegada més present en la nostra societat la paraula inclusió i més concretament en el nostre àmbit educatiu, el concepte d’educació inclusiva. Aquest treball pretén presentar una eina adaptada i traduïda al català anomenada Student Program Observation Tools, la qual serveix per fer un anàlisi d’una de les mesures d’atenció a la diversitat: els Plans Individualitzats, per tal de millorar-ne el contingut i ésser una ajuda per a les escoles però també perquè els alumnes amb necessitats educatives especials puguin tenir accés al currículum ordinari com la resta dels seus companys de classe.

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AIM: To develop and test the Parental PELICAN Questionnaire, an instrument to retrospectively assess parental experiences and needs during their child's end-of-life care. BACKGROUND: To offer appropriate care for dying children, healthcare professionals need to understand the illness experience from the family perspective. A questionnaire specific to the end-of-life experiences and needs of parents losing a child is needed to evaluate the perceived quality of paediatric end-of-life care. DESIGN: This is an instrument development study applying mixed methods based on recommendations for questionnaire design and validation. METHOD: The Parental PELICAN Questionnaire was developed in four phases between August 2012-March 2014: phase 1: item generation; phase 2: validity testing; phase 3: translation; phase 4: pilot testing. Psychometric properties were assessed after applying the Parental PELICAN Questionnaire in a sample of 224 bereaved parents in April 2014. Validity testing covered the evidence based on tests of content, internal structure and relations to other variables. RESULTS: The Parental PELICAN Questionnaire consists of approximately 90 items in four slightly different versions accounting for particularities of the four diagnostic groups. The questionnaire's items were structured according to six quality domains described in the literature. Evidence of initial validity and reliability could be demonstrated with the involvement of healthcare professionals and bereaved parents. CONCLUSION: The Parental PELICAN Questionnaire holds promise as a measure to assess parental experiences and needs and is applicable to a broad range of paediatric specialties and settings. Future validation is needed to evaluate its suitability in different cultures.

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[Table des matières] 1. Les acteurs du système suisse de santé : les assureurs maladies, les fournisseurs de prestations, l'Etat, les assurés patients. 2. Quelle concurrence pour quelle organisation? : 2.1 Concurrence entre fournisseurs de prestations: Références étrangères (Grande-Bretagne, USA, Pays-Bas); Le système suisse: Financement et planification, Conventions tarifaires, Un élement indispensable à la concurrence: l'information. 2.2 Concurrence entre assureurs maladie. 3. Nouvelles formes d'organisation : 3.1 Les Health Maintenance Organizations (HMO); 3.2 Les HMO en Suisse: un moyen d'endiguer la croissance des coûts; 3.3 Les Nouvelles Orientations de Politique Sanitaire (NOPS); 3.4 La concurrence dans le cadre des réseaux intégrés.

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Sempre és difícil assignar un origen a les iniciatives socials perquè, la majoria de vegades, solen resultar conseqüència de l'esforç col.lectiu de moltes persones i institucions. De totes formes podríem dir que del Col·legi Professional se'n parla, en molts dels àmbits de l'educació social, des de mitjans dels anys vuitanta. De fet, ja en la I Trobada d'Educadors Especialitzats Faustino Guerau (Barcelona, octubre de 1988), en parlar de les formes organitzatives del col.lectiu professional, ja va fer aparició aquest objectiu. Però llavors, ni tan sols existien associacions d'educadors en tot l'Estat espanyol, ni una Federació que les coordinés. El tema es reprèn en el I Congrés d'Educadors de Pamplona (març de 1987) i en el X Col.loqui Internacional de la AIEJI(J) (Barcelona, novembre de 1989). La prioritat es fixà en la creació de la Diplomatura i en això es posaren tots els esforços fins 1991. Després va seguir un període de crisi en les Associacions d'Educadors que se supera a finals del 1993. D'aquesta crisi se'n surt col·lectivament, amb una sèrie d'objectius entre els que ocupa un espai central el Col·legi Oficial. Així doncs, en el I Congrés de l'Educador Social d'abril de 1995 a Múrcia, un dels àmbits temàtics oberts fou el del Col·legi Professional. Més en concret, l' Associació Professiona1 d'Educadors Socials de Catalunya -APESC-, escull des del 1994, aquesta com una de les seves fites fonamentals per al bienni 1994-96. I en aquesta línia inicia des del 94 diferents contactes instituciona1s, polítics, amb altres col.lectius professionals, a1umnes ...

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We present a polarimetric-based optical encoder for image encryption and verification. A system for generating random polarized vector keys based on a Mach-Zehnder configuration combined with translucent liquid crystal displays in each path of the interferometer is developed. Polarization information of the encrypted signal is retrieved by taking advantage of the information provided by the Stokes parameters. Moreover, photon-counting model is used in the encryption process which provides data sparseness and nonlinear transformation to enhance security. An authorized user with access to the polarization keys and the optical design variables can retrieve and validate the photon-counting plain-text. Optical experimental results demonstrate the feasibility of the encryption method.

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We describe the preparation and some optical properties of high refractive index TeO2-PbO-TiO2 glass system. Highly homogeneous glasses were obtained by agitating the mixture during the melting process in an alumina crucible. The characterization was done by X-ray diffraction, Raman scattering, light absorption and linear refractive index measurements. The results show a change in the glass structure as the PbO content increases: the TeO4 trigonal bipyramids characteristics of TeO2 glasses transform into TeO3 trigonal pyramids. However, the measured refractive indices are almost independent of the glass composition. We show that third-order nonlinear optical susceptibilities calculated from the measured refractive indices using Lines' theoretical model are also independent of the glass composition.

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Fabrication of new optical devices based upon the incorporation of rare earth ions via sol-gel methods depends on elimination of dopant ion clusters and residual hydroxyl groups from the final material. The optical absorption and/or luminescence properties of luminescent rare earth ions are influenced by the local bonding environment and the distribution of the rare-earth dopants in the matrix. Typically, dopants are incorporated into gel via dissolution of soluble species into the initial precursor sol. In this work, Eu3+ is used as optical probe, to assess changes in the local environment. Results of emission, excitation, fluorescence line narrowing and lifetimes studies of Eu3+-doped gels derived from Si(OCH3)4 and fluorinated/chelate Eu3+ precursors are presented. The precursors used in the sol-gel synthesis were: tris (6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate) Eu(III), Eu (III) trifluoromethanesulfonate, Eu(III) acetylacetonate hydrate, Eu (III) trifluoroacetate trihidrate, tris (2,2,6,6-tetramethyl-3,5- heptanedionate) Eu(III) and Eu(NO3)3.6H2O. The results were interpreted in terms of the evolution of the Eu3+ fluorescence in systems varying from solution to the gels densified to 800ºC. The lifetimes studies indicate that the fluorinated precursors are effective at reducing the water content in densified gels.

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This Master's thesis addresses the design and implementation of the optical character recognition (OCR) system for a mobile device working on the Symbian operating system. The developed OCR system, named OCRCapriccio, emphasizes the modularity, effective extensibility and reuse. The system consists of two parts which are the graphical user interface and the OCR engine that was implemented as a plug-in. In fact, the plug-in includes two implementations of the OCR engine for enabling two types of recognition: the bitmap comparison based recognition and statistical recognition. The implementation results have shown that the approach based on bitmap comparison is more suitable for the Symbian environment because of its nature. Although the current implementation of bitmap comparison is lacking in accuracy, further development should be done in its direction. The biggest challenges of this work were related to developing an OCR scheme that would be suitable for Symbian OS Smartphones that have limited computational power and restricted resources.

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The large hadron collider constructed at the European organization for nuclear research, CERN, is the world’s largest single measuring instrument ever built, and also currently the most powerful particle accelerator that exists. The large hadron collider includes six different experiment stations, one of which is called the compact muon solenoid, or the CMS. The main purpose of the CMS is to track and study residue particles from proton-proton collisions. The primary detectors utilized in the CMS are resistive plate chambers (RPCs). To obtain data from these detectors, a link system has been designed. The main idea of the link system is to receive data from the detector front-end electronics in parallel form, and to transmit it onwards in serial form, via an optical fiber. The system is mostly ready and in place. However, a problem has occurred with innermost RPC detectors, located in sector labeled RE1/1; transmission lines for parallel data suffer from signal integrity issues over long distances. As a solution to this, a new version of the link system has been devised, a one that fits in smaller space and can be located within the CMS, closer to the detectors. This RE1/1 link system has been so far completed only partially, with just the mechanical design and casing being done. In this thesis, link system electronics for RE1/1 sector has been designed, by modifying the existing link system concept to better meet the requirements of the RE1/1 sector. In addition to completion of the prototype of the RE1/1 link system electronics, some testing for the system has also been done, to ensure functionality of the design.

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Aproximació als fets de la conquesta de Mallorca per Jaume I a través de la historiografia catalana medieval i el seu ús com a instrument de propaganda política.

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El propòsit d'aquest treball és donar a conèixer la lyra viol i la seva música. Entre d'altres maneres de tocar aquest instrument, mostrar com aquest servia per acompanyar la veu, així com arranjar peces polifòniques tal i com trobem en publicacions de l'època. I serà a partir d'aquests exemples, que he fet els meus propis arranjaments per a viola de gamba i que incloc en aquest treball.