377 research outputs found

    Competence-based approach in the development teacher training policy. Interview with Claude Lessard

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    The introduction of competency-based approach has set into motion new models in the conception of learning and, consequently, in the design of curricula. Although this is considered as a global issue, there are important differences between countries. In fact, Canada has been one of the first countries that has designed and implemented a competency-based curriculum in all stages of the educational systems, from Primary to Higher Education, including teacher training programs. In this paper, professor Claude Lessard´s ideas are presented in relation to the competency-based approach and its implementation in the reform of the initial teacher training courses that is currently taking place in Montreal. This interview offers new theoretical approaches that, undoubtedly, will enrich the current debate about the design of a competency-based policy

    How to design (and assemble) a Pavilion. Mastercard's Tourism Innovation Hub experience

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    The goal of this essay is to illustrate a very personal yet general approach to the concept of “temporality” in contemporary architecture. Using the empirical example of Mastercard’s Tourism Innovation Hub (TIH), we will attempt to guide our readers through the meanings of modularity, repetition, transportation, systematisation, economy, easy assembly and disassembly, and quality within the core idea of ephemeral architecture. We will start with a brief introduction to what “temporal” means (as the opposite of “permanent”), tracing the concept from the Roman treatise by Vitruvius to some contemporary ephemeral proposals. Following that, we will provide a more extensive description of our TIH as a modern reinterpretation of Augustine Taylor’s famous “Balloon Frame,” leading to the creation of a three-dimensional oasis inspired by Hans Arp. The stand/pavilion addresses temporality from the inception of the design process to the final phase of disassembly and storage.El objetivo de este ensayo es ilustrar un enfoque muy personal y general del concepto de “temporalidad” en la arquitectura contemporánea. Con el ejemplo empírico del Tourism Innovation Hub (TIH) de Mastercard intentaremos guiar a nuestros lectores a través de los significados de modularidad, repetición, transporte, sistematización, economía, fácil montaje y desmontaje, calidad dentro de la idea central de la arquitectura efímera. Comenzando con una breve introducción sobre lo que significa “temporal” (como lo opuesto a “permanente”) desde el tratado romano Vitruvio hasta algunas propuestas efímeras contemporáneas y una descripción más extensa de nuestro TIH como una forma moderna de reinterpretar el famoso “Ballon Frame” de Agustín Taylor, que se desvía hacia la creación de un oasis tridimensional de Hans Arp. Un stand/pabellón que aborda la temporalidad desde el inicio del proceso de diseño hasta la última fase de desmontaje y almacenamiento

    Empalme PIB: Series Anuales y Trimestrales 1986 - 1995, Base 1996. Documento Metodológico

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    In March 2002 the Central Bank published a new data series of National Accounts for Chile for the period 1996-2001, using 1996 as the new base period. In order to provide users with longer annual and quarterly time series, this paper links the 1986 base period GDP series with the 1996 base period GDP data (for total GDP and expenditure components). The paper discusses the methodologies and recommendations made by SNA 93, the European System of National Accounts, and specific countries. Past retropolations to Chilean national accounts and the linking methodology used are also discussed. Finally, the paper annex provides a simple numerical example to illustrate the change of base period and the standard problems that have to be addressed in these cases.

    Grouped sparsity algorithm for multichannel intracardiac ECG synchronization

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    In this paper, a new method is presented to ensure automatic synchronization of intracardiac ECG data, yielding a three-stage algorithm. We first compute a robust estimate of the derivative of the data to remove low-frequency perturbations. Then we provide a grouped-sparse representation of the data, by means of the Group LASSO, to ensure that all the electrical spikes are simultaneously detected. Finally, a post-processing step, based on a variance analysis, is performed to discard false alarms. Preliminary results on real data for sinus rhythm and atrial fibrillation show the potential of this approach

    Fortificaciones francesas en el Caribe frente a los ataques de la Guerra de los Siete Años

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    Los ataques a posiciones francesas en el Caribe durante la Guerra de los Siete Años pueden considerarse un experimento previo al de La Habana, probablemente la victoria más significativa del conflicto en la zona. Para llegar a esta conclusión, este artículo analiza el estado de las construcciones defensivas en Haití, Guadalupe, Martinica, Dominica y Santa Lucía. Para ello se han consultado proyectos de fortificación depositados en diferentes archivos, además de los restos arquitectónicos aún conservados. Posteriormente se abordan los distintos ataques británicos desarrollados entre 1759 y 1762 a partir de fuentes contemporáneas, valorando la relevancia de las fortificaciones en el desenlace.The attacks on French settlements in the Caribbean during the Seven Years War can be considered an experiment prior to the one on Havana, probably the most significant victory of the conflict in the area. To reach this conclusion, this article analyzes the state of defensive constructions in Haiti, Guadeloupe, Martinique, Dominica and Saint Lucia. To this end, fortification projects deposited in different archives have been consulted, in addition to the architectural remains still preserved. Subsequently, the different British attacks developed between 1759 and 1762 are examined from primary sources, assessing the relevance of the fortifications in the result

    INFFC: An iterative class noise filter based on the fusion of classifiers with noise sensitivity control

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    Supported by the Projects TIN2011-28488, TIN2013-40765-P, P10-TIC-06858 and P11-TIC-7765. J.A. Saez was supported by EC under FP7, Coordination and Support Action, Grant Agreement Number 316097, ENGINE European Research Centre of Network Intelligence for Innovation Enhancement (http://engine.pwr.wroc.pl/).In classification, noise may deteriorate the system performance and increase the complexity of the models built. In order to mitigate its consequences, several approaches have been proposed in the literature. Among them, noise filtering, which removes noisy examples from the training data, is one of the most used techniques. This paper proposes a new noise filtering method that combines several filtering strategies in order to increase the accuracy of the classification algorithms used after the filtering process. The filtering is based on the fusion of the predictions of several classifiers used to detect the presence of noise. We translate the idea behind multiple classifier systems, where the information gathered from different models is combined, to noise filtering. In this way, we consider the combination of classifiers instead of using only one to detect noise. Additionally, the proposed method follows an iterative noise filtering scheme that allows us to avoid the usage of detected noisy examples in each new iteration of the filtering process. Finally, we introduce a noisy score to control the filtering sensitivity, in such a way that the amount of noisy examples removed in each iteration can be adapted to the necessities of the practitioner. The first two strategies (use of multiple classifiers and iterative filtering) are used to improve the filtering accuracy, whereas the last one (the noisy score) controls the level of conservation of the filter removing potentially noisy examples. The validity of the proposed method is studied in an exhaustive experimental study. We compare the new filtering method against several state-of-the-art methods to deal with datasets with class noise and study their efficacy in three classifiers with different sensitivity to noise.EC under FP7, Coordination and Support Action, ENGINE European Research Centre of Network Intelligence for Innovation Enhancement 316097TIN2011-28488TIN2013-40765-PP10-TIC-06858P11-TIC-776

    Isolamento, identificação e sorotipagem de candida albicans a partir de secreção vaginal

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    According to clinical observations in the city of Alfenas-MG, 104 samples of vaginal secretion in women with suspected candidiasis were studied. 55,7% of positivity were found for Candida albicans, prevailing greater rate in black people (64% of 25 samples) than in white people, the least positive in the total of cases. The majority of the positive samples (93.1%) belonged to women within the ages of 20 and 40. The use of contraceptives, antibiotics and the presence of cervical displasy were the factors that contributed to the greatest incidence of the fungi. Of the 58 samples of C. albicans isolated, 50 (86,2%) belonged to the serotype "A", of these 37 (74%)) were isolated from white women and 13(26%) of black ones. Only 08 samples (13.8%) belonged to the serotype "B", 05 of the 08 (11.90%) were isolated from white women and 03 (18.75%) of the black women.Foram estudadas 104 amostras de secreção vaginal de mulheres com suspeita de candidiase segundo observações clinicas, na cidade de Alfenas-MG. Encontrou-se 55,7% de positividade para Candida albicans .prevalecendo maior índice na raça negra (64% de 25 amostras), sendo de 53,1% (79 amostras), a positividade na raça branca. Em 14 gestantes, a pesquisa da levedura mostrou-se positiva na totalidade dos casos. A maioria das amostras positivas (93,1%) procedia de mulheres com idade compreendida entre 20 40 anos. O uso de anticoncepcionais, antibióticos e presença de displasias cervicais mostraram-se como fatores que contribuiram para maior incidência do fungo. Das 58 amostras de C. albicans isoladas, 50 (86,2%) pertenciam ao sorotipo "A", sendo 37 (74%) isoladas de mulheres da raça branca e 13 (26%) da raça negra. Apenas 08 amostras (13,8%) pertenciam ao sorotipo "B", sendo 05 (11,9%) isoladas a partir de mulheres da raça branca e 03 (18,75%) da raça negra
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