7,098 research outputs found

    Fronteiras (in)definidas: aproximações e divergências entre documentário e jornalismo

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    Documentary and journalism present structures narratives thatare similar because can be seen like a space for the materialization of thereality, but the process of production and the “voice” which represent showus sufficient divergent about its relation with the “real”.This aspect crossed allthe history of the journalism, that at the beginning of the past century, joinitself with the cinema by “cinejournals” and of the ordered cinema. This paperintends to verify somes important questions to understand the similarities anddivergences between documentary and journalism, as well as the bond thatthey establish with the daily one and with the reality

    Desenvolvimento de método para determinação de drogas psicoativas e seus metabólitos em esgoto : suporte aos estudos de epidemiologia forense

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    Dissertação (mestrado)—Universidade de Brasília, Instituto de Química, 2014.A necessidade de uma ferramenta mais rápida, precisa e confiável para estimar o consumo de drogas de abuso tem dado espaço à abordagem conhecida como epidemiologia do esgoto. Este trabalho, por sua vez, tem o objetivo de desenvolver um método analítico baseado em UPLC-MS/MS para determinar cocaína, benzoilecgonina e 8 outros metabólitos, anfetamina, metanfetamina e outros 4 anfetamínicos, além de 3 dos principais metabólitos da cannabis, canabidiol, 11-nor-9-hidroxi-Δ-9-tetrahidrocanabinol e 11-nor-9-carboxi-Δ-9-tetrahidrocanabinol; com o objetivo de produzir estimativas de consumo utilizando epidemiologia do esgoto. Para o desenvolvimento do método, foi realizada otimização dos parâmetros instrumentais do espectrômetro de massa baseado em MRM para todos os analitos e foi desenvolvido método cromatográfico capaz de separar satisfatoriamente as substâncias-alvo. Planejamento fatorial 23 foi realizado para estudar os efeitos das seguintes variáveis – solvente de condicionamento, solvente de eluição e pH da amostra – sobre o processo de extração em fase sólida SPE. O método de extração final foi capaz de apresentar recuperações satisfatórias para 14 dos 19 analitos propostos inicialmente. Amostras de esgoto coletadas nos finais de semana dos jogos da Copa do Mundo FIFA realizados em Brasília – DF foram analisadas seguindo o método analítico desenvolvido. Foram detectadas no esgoto benzoilecgonina, cocaína, anidroecgonina, fenacetina e levamisol. A concentração de benzoilecgonina foi utilizada para estimar o consumo de cocaína, que variou de 6,3 a 22,8 doses por dia para cada 1000 habitantes. Sendo a região norte, composta por Asa Norte, Lago Norte, Varjão e Estrutural, detentora dos maiores consumos de cocaína.The need for a faster, trustful and more precise tool to estimate drug abuse consumption has given space to the approach called sewage epidemiology. This work aims to develop analytical method based on UPLC-MS/MS to determine COC, BE and 8 other metabolites, AMP, MAMP and 4 other amphetamine-like substances, and 3 of the major metabolites of cannabis, CBD, OH -THC and THC-COOH; in order to estimate the consumption using sewage epidemiology. For the development of the method, an optimization of MRM parameters for all analytes was carried out and a chromatographic method to adequately separate the target substances was developed. 23 factorial planning was conducted to study the effects of two different levels for conditioning solvent, elution solvent and pH value for the samples. The final extraction method was able to produce satisfactory recoveries for 19 of the 14 originally proposed analytes. Sewage samples were collected on the weekends of the FIFA World Cup games that occurred in Brasilia – DF. They were analyzed using the analytical method developed in this work. BE, COC, AE, phenacetin and levamisole were detected in the sewage samples. The BE concentrations were used to produce cocaine consumption estimations, which ranged from 6.3 to 22.8 doses per day for each 1,000 habitants. Being the northern region, that comprises Lago Norte, Asa Norte, Varjão and Estrutural, holder of the largest cocaine consumption

    JEGUATÁ: O CAMINHAR ENTRE OS GUARANI

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    In this article the guarani ‘walk’ is elected as reflection’s object as from ethnographical frequentation in some spaces where mbyá and nhandeva groups can be actually found and circulating in eastern Rio Grande do Sul. As a specific form of mobility based on differentiated lecture of the elements in space, jeguatá or just guatá, (walk in the guarani idiom) will be here analyzed in interface with shamanism, as a cosmopolitical form through whichspaces are understood, forefront the presence and absence, and consequently alterity’s influence as identified by these groups.RESUMO: Neste artigo o ‘caminhar’ guarani é eleito como objeto de reflexões a partir da freqüentação etnográfica de alguns espaços onde se encontram e circulam atualmente grupos mbyá e nhandeva na região leste do Rio Grande do Sul. Enquanto forma de mobilidadeespecífica pautada por leituras diferenciadas dos elementos do espaço, o jeguatá ou somente guatá (caminhar no idioma guarani) será aqui analisado em sua interface com o xamanismo, enquanto forma de cosmopolítica através da qual os espaços são entendidos, frente à presença e ausência, e conseqüente influência, das alteridades identificadas por estes grupos

    Does sacking a coach really help? Evidence from a Difference-in-Differences approach

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    Dissertation presented as the partial requirement for obtaining a Master's degree in Data Science and Advanced Analytics, specialization in Data ScienceThis project looks to evaluate if football clubs should or should not change their coach in order to improve their performance in the national league. For this analysis I selected, three of the most important European football leagues, La Liga (Spain), Serie A (Italy) and Premier League (England). The data used in this project was taken from the transfermarkt website, a large football platform. The data period is from season 2005-06 to season 2019-20 and has information about individual games results and squad value by player. The steps before the analysis were a data cleaning and consolidation of the information, creation of new features as a performance measure and selection of cases of interest for this analysis based on club and coach profile. Numeric variables were standardized to be on the same scale and make different seasons comparable. A K-means was applied to identify clubs according to their investments which has a proportional correlation with performance. Finally, a difference in differences analysis was applied to evaluate if a club would obtain a performance gain if they decided to sack their coach between game twelve and twenty-six of the season after a poor performance in consideration to squad price. As a general conclusion, it is possible to consider that on average the clubs in the treatment group and comparison group recover their performance after a period of underperforming, but the recovery of the clubs that sack their coach is lower compared with the clubs that keep them

    A multi-objective decision support methodology for developing national energy efficiency plans

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    Tese de Programa Doutoral. Sistemas Sustentáveis de Energia. Universidade do Porto. Faculdade de Engenharia. 201

    Interregional Interdependence among Ecuadorian Provinces: An Input-Output Analysis

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    In this paper, we explore the structural characteristics of the interregional input-output system developed for Ecuador for the year 2007. As part of an ongoing project that aims to develop an interregional CGE model for the country, this database was developed under conditions of limited information. It provides the opportunity to better understand the spatial linkage structure associated with the national economy in the context of its 22 provinces, 15 sectors and 60 different products. This exploratory analysis is based on the description structural coefficients and the use of traditional input-output techniques. Finally, we further explore the spatial linkage structure by looking at the decomposition of final demand components. It is hoped that this exercise might result in a better appreciation of a broader set of dimensions that might improve our understanding of the integrated interregional economic system in Ecuador.
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