Análisis organizativo y de tareas en la actividad de reforma de baños particulares para el análisis y evaluación ergonómico

El sector de la construcción abarca diferentes actividades como construir, reparar, restaurar, reformar, derribar, etc. Y el presente proyecto muestra un análisis de tipo ergonómico en la actividad de reformas. Más concretamente se centra en un estudio de las condiciones ergonómicas de los trabajadores en las reformas de baños particulares, proponiendo a su vez una serie de mejoras en los métodos de ejecución. El estudio se ha llevado a cabo con la herramienta de análisis denominada, método Check List OCRA que permite, conocer de manera general y breve, la evaluación de una actividad. La primera parte del estudio corresponde a una presentación de la situación actual del sector de la construcción y los riesgos que conlleva. La segunda parte tiene como objetivo presentar las tareas en las que se ha dividido la actividad de reformas de baño, las cuáles servirán para clasificarlas y evaluarlas individualmente. Seguidamente se realiza una exposición de los casos a evaluar, comentando sus particularidades y en especial el requerimiento temporal de cada una de las tareas que se llevan a cabo. Todo ello gracias al material videográfico editado. Finalmente, se plasma el objetivo principal del proyecto que hace referencia a la muestra de resultados ergonómicos. Resultados que muestran el posible riesgo a sufrir trastornos músculo-esqueléticos por parte de los trabajadores y la consecuente propuesta de mejoras para reducir éste índice de exposición a la que se ven expuestos los operarios

Perazzo hypersurfaces and the Lefschetz properties

Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2023, Director: Rosa M. Miró-Roig[en] The main goal of this writing is to introduce basic concepts of algebraic geometry and commutative algebra to be able to study the relationship between Perazzo hypersurfaces and the Lefschetz properties. We will introduce graded algebras and how to construct one of them from a hypersurface to further check if they satisfy any of the properties. In this paperwork, we have found an upper bound and a low enough value of the Hilbert vector for Perazzo hypersurfaces. The notable result we have obtained is that the Weak Lefschetz property is failed to obtain when the h-vector is maximal, and conversely, it is always obtained when the h-vector is on that low value

Epóxidos y aziridinas de ciclohexano relacionados estructuralmente con la galactosa como inhibidores selectivos de galactosidasas

La presente invención se refiere a una familia de epóxidos y aziridinas derivadas de ciclohexano que poseen una similitud estructural con la galactosa y presentan propiedades como inhibidores de galactosidasas. Además la presente invención también se refiere al uso de estos compuestos como herramienta biotecnológica, como reactivo de biología molecular, así como, para la preparación de un medicamento para el tratamiento de enfermedades asociadas a la glicosilación de lípidos y proteínas.Peer reviewedConsejo Superior de Investigaciones Científicas (España)A1 Solicitud de patente con informe sobre el estado de la técnic

Shedding light on metabotropic glutamate receptors using optogenetics and photopharmacology

International audienc

Cues to Contrastive Focus in Romanian

In this study we measured patterns of pitch alignment, pitch range and duration in relation to broad and contrastive focus in Romanian. In declarative sentences with broad focus, speakers place a pitch accent on each lexically stressed syllable with peaks that become progressively lower towards the end of the sentence. In prenuclear accents peaks align with the post-tonic syllable. In declarative sentences with contrastive focus, speakers use strategies based on pitch and duration in order to build a maximum contrast between the word under focus and those in pre- and post-focal contexts: an expanded pitch range under focus and a reduced pitch range and shorter stressed syllables in pre- and post-focal contexts. Thus, the flat F0 and shorter segmental durations in pre- and post-focal contexts constitute a background that by contrast, highlights the segmental durations and expanded pitch ranges found under contrastive focus

Explaining Cross-Language Asymmetries in Prosodic Processing: The Cue-Driven Window Length Hypothesis

Cross-language studies have shown that English speakers use suprasegmental cues to lexical stress less consistently than speakers of Spanish and other Germanic languages ; accordingly, these studies have attributed this asymmetry to a possible trade-off between the use of vowel reduction and suprasegmental cues in lexical access. We put forward the hypothesis that this “cue trade-off” modulates intonation processing as well, so that English speakers make less use of suprasegmental cues in comparison to Spanish speakers when processing intonation in utterances causing processing asymmetries between these two languages. In three cross-language experiments comparing English and Spanish speakers’ prediction of hypo-articulated utterances in focal sentences and reporting speech, we have provided evidence for our hypothesis and proposed a mechanism, the Cue-Driven Window Length model, which accounts for the observed cross-language processing asymmetries between English and Spanish at both lexical and utterance levels. Altogether, results from these experiments illustrated in detail how different types of low-level acoustic information (e.g., vowel reduction versus duration) interacted with higher-level expectations based on the speakers’ knowledge of intonation providing support for our hypothesis. These interactions were coherent with an active model of speech perception that entailed real-time adjusting to feedback and to information from the context, challenging more traditional models that consider speech perception as a passive, bottom-up pattern-matching process

2D and 3D Polar Plume Analysis from the Three Vantage Positions of STEREO/EUVI A, B, and SOHO/EIT

Polar plumes are seen as elongated objects starting at the solar polar regions. Here, we analyze these objects from a sequence of images taken simultaneously by the three spacecraft telescopes STEREO/EUVI A and B, and SOHO/EIT. We establish a method capable of automatically identifying plumes in solar EUV images close to the limb at 1.01 - 1.39 R in order to study their temporal evolution. This plume-identification method is based on a multiscale Hough-wavelet analysis. Then two methods to determined their 3D localization and structure are discussed: First, tomography using the filtered back-projection and including the differential rotation of the Sun and, secondly, conventional stereoscopic triangulation. We show that tomography and stereoscopy are complementary to study polar plumes. We also show that this systematic 2D identification and the proposed methods of 3D reconstruction are well suited, on one hand, to identify plumes individually and on the other hand, to analyze the distribution of plumes and inter-plume regions. Finally, the results are discussed focusing on the plume position with their cross-section area.Comment: 22 pages, 10 figures, Solar Physics articl