El futuro de las tecnologías digitales aplicadas al aprendizaje de personas con necesidades educativas especiales.

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Implicación de las TICs en el ámbito socio-educativo y de servicios sociales : una experiencia universitaria de innovación y desarrollo docente con tecnologías 2.0

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Literatura busca emocions

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Taller de guion cinematogr??fico para estudiantes de ELE : una propuesta did??ctica

Memoria de m??ster (Universidad de Barcelona- Universidad Pompeu Fabra, 2012)

Influence of the symptoms of Attention Deficit Hyperactivity Disorder (ADHD) and comorbid disorders on functioning in adulthood

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Portafolio del profesor en formaci??n : una propuesta pr??ctica para el desarrollo profesional

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Coestructuraci??n multisist??mica y estrategias did??cticas en estados iniciales de aprendizaje de la lectoescritura

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Una realidad cl??nica en el aula y en casa

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Image Segmentation Using Information Bottleneck Method

In image processing, segmentation algorithms constitute one of the main focuses of research. In this paper, new image segmentation algorithms based on a hard version of the information bottleneck method are presented. The objective of this method is to extract a compact representation of a variable, considered the input, with minimal loss of mutual information with respect to another variable, considered the output. First, we introduce a split-and-merge algorithm based on the definition of an information channel between a set of regions (input) of the image and the intensity histogram bins (output). From this channel, the maximization of the mutual information gain is used to optimize the image partitioning. Then, the merging process of the regions obtained in the previous phase is carried out by minimizing the loss of mutual information. From the inversion of the above channel, we also present a new histogram clustering algorithm based on the minimization of the mutual information loss, where now the input variable represents the histogram bins and the output is given by the set of regions obtained from the above split-and-merge algorithm. Finally, we introduce two new clustering algorithms which show how the information bottleneck method can be applied to the registration channel obtained when two multimodal images are correctly aligned. Different experiments on 2-D and 3-D images show the behavior of the proposed algorithms

Relação entre factores ambientais causadores de stress e doença renal felina

A Doença Renal Crónica (DRC) é de natureza insidiosa, progressiva e irreversível e uma grande causa de morbilidade e mortalidade em gatos. O comportamento natural da espécie felina fica comprometido no meio doméstico, originando situações de stress que desempenham um papel importante na patogénese da doença crónica. A literatura sugere que a activação contínua do sistema nervoso simpático desencadeia uma série de processos fisiológicos que se traduzem por último no aparecimento de fibrose renal, contribuindo assim para a progressão da DRC. Esta dissertação pretende avaliar essa relação. Para tal, foram analisados questionários que permitissem avaliar as condições em que viviam uma amostra de 139 gatos e realizados painéis hematológicos e bioquímicos a uma sub-amostra para verificar as correlações existentes. Ainda que não tenha sido possível concluir que a presença de um parâmetro individual possa ser apontada como causa directa do desenvolvimento de DRC, podemos identificar um conjunto de factores ambientais causadores de stress como prováveis factores de risco para a degradação desta doença e a sua transição para fases mais avançadas. Desta forma, a implementação de estratégias de enriquecimento ambiental MEMO (Multimodal Environmental Modification) não só visa melhorar a qualidade de vida destes animais como se pode revelar uma chave de sucesso na prevenção e maneio de doenças crónicas.

La región amazónica ecuatoriana: naturaleza y derechos colectivos en el ojo del huracán

La Constitución define al estado como plurinacional y el reconoce a la Naturaleza como sujeto de derechos. Pese a ello, durante el año 2009 se violaron los derechos de la naturaleza y los Derechos Colectivos de Pueblos y Nacionalidades en los siguientes casos: el Eje Multimodal Manta Manaos; la iniciativa ITT; la normatividad y políticas para la explotación minera industrial en la Cordillera del Cóndor, concesiones y privilegios para misiones católicas en la Región Amazónica, el cierre de la radio La Voz de Arutam, el ataque de los Pueblos del Yasuní y el caso de Sarayaku. Los casos evidencian que el poder gubernamental continúa atado al modelo preconstituyente, los afanes desarrollistas y extractivistas han llenado de conflictos a los pobladores ancestrales.

Brasil, Ecuador y la Manta-Manaos: Escenarios a considerar para una auténtica integración

El eje multimodal Manta-Manaos evoca la idea de la articulación comercial del Ecuador con Brasil y, consiguientemente, afloran sentimientos positivos sobre la integración regional sudamericana. Sin embargo, cuando se realiza un análisis más integral de las diferentes aristas que componen este megaproyecto, surgen varios escenarios y actores que deben ser considerados, si el gobierno ecuatoriano pretende alcanzar un auténtico desarrollo social, comercial y ecológico de la región amazónica, principal implicada en el corredor. El estudio profundiza dos líneas fundamentales: la primera es que los intentos de integración comercial entre Ecuador y el gigante latinoamericano deben ser conceptualizados desde la configuración económica de ambos países, reconociendo las verdaderas potencialidades y limitantes que existen. Y la segunda es que, tal y como se perfila la vía, una fractura ambiental de la Amazonía ecuatoriana es inminente, pues Ecuador no dispone de un plan de desarrollo integral que incluya principalmente el reordenamiento territorial e inclusión de los pobladores amazónicos. Crear alternativas para una integración que satisfaga los intereses comerciales, medio ambientales y humanos del Ecuador dependerá de la capacidad del gobierno para incluir a los actores, sincerar los escenarios comerciales y promover propuestas que efectivamente conduzcan a la inserción estratégica del Ecuador en el mundo.

Multi-level Input Fusion in multi-modal systems

Context-aware multimodal interactive systems aim to adapt to the needs and behavioural patterns of users and offer a way forward for enhancing the efficacy and quality of experience (QoE) in human-computer interaction. The various modalities that constribute to such systems each provide a specific uni-modal response that is integratively presented as a multi-modal interface capable of interpretation of multi-modal user input and appropriately responding to it through dynamically adapted multi-modal interactive flow management , This paper presents an initial background study in the context of the first phase of a PhD research programme in the area of optimisation of data fusion techniques to serve multimodal interactivite systems, their applications and requirements.

Fate of prions in soil: Detergent extraction of PrP from soils

The transmissible spongiform encephalopathies (TSEs) are caused by infectious agents whose structures have not been fully characterized but include abnormal forms of the host protein PrP, designated PrPSc, which are deposited in infected tissues. The transmission routes of scrapie and chronic wasting disease (CWD) seem to include environmental spread in their epidemiology, yet the fate of TSE agents in the environment is poorly understood. There are concerns that, for example, buried carcasses may remain a potential reservoir of infectivity for many years. Experimental determination of the environmental fate requires methods for assessing binding/elution of TSE infectivity, or its surrogate marker PrPSc, to and from materials with which it might interact. We report a method using Sarkosyl for the extraction of murine PrPSc, and its application to soils containing recombinant ovine PrP (recPrP). Elution properties suggest that PrP binds strongly to one or more soil components. Elution from a clay soil also required proteinase K digestion, suggesting that in the clay soil binding occurs via the N-terminal of PrP to a component that is absent from the sandy soils tested.

Analysis of 'APN' naphthenic acids by high temperature gas chromatoagraphy and high performance liquid chromatography

Examination by high temperature GC (HTGC) of the methyl esters of the so-called 'ARN' naphthenic acids from crude oils of North Sea UK, Norwegian Sea and West African oilfields revealed the distributions of resolved 4-8 ring C-80 tetra acids and trace amounts of other acids. Whilst all three oils contained apparently the same the proportions of each differed, possibly reflecting the growth tempe acids, ratures of the archaebacteria from which the acids are assumed to have originated. The structures of the 4, 5, 7 and 8 ring acids are tentatively assigned by comparison with the known 6 ring acid and related natural products and an HPLC method for the isolation of the individual acids is described. ESI-MS of individual acids isolated by preparative HPLC established the elution order of the 4-8 ring acids on the HPLC and HTGC systems and revealed the presence of previously unreported acids tentatively identified as C-81 and C-82 7 and 8 ring analogues.