964 resultados para Radio meteorology
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With the increasing complexity of current networks, it became evident the need for Self-Organizing Networks (SON), which aims to automate most of the associated radio planning and optimization tasks. Within SON, this paper aims to optimize the Neighbour Cell List (NCL) for Long Term Evolution (LTE) evolved NodeBs (eNBs). An algorithm composed by three decisions were were developed: distance-based, Radio Frequency (RF) measurement-based and Handover (HO) stats-based. The distance-based decision, proposes a new NCL taking account the eNB location and interference tiers, based in the quadrants method. The last two algorithms consider signal strength measurements and HO statistics, respectively; they also define a ranking to each eNB and neighbour relation addition/removal based on user defined constraints. The algorithms were developed and implemented over an already existent radio network optimization professional tool. Several case studies were produced using real data from a Portuguese LTE mobile operator. © 2014 IEEE.
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The aim of this work was to assess the influence of meteorological conditions on the dispersion of particulate matter from an industrial zone into urban and suburban areas. The particulate matter concentration was related to the most important meteorological variables such as wind direction, velocity and frequency. A coal-fired power plant was considered to be the main emission source with two stacks of 225 m height. A middle point between the two stacks was taken as the centre of two concentric circles with 6 and 20 km radius delimiting the sampling area. About 40 sampling collectors were placed within this area. Meteorological data was obtained from a portable meteorological station placed at approximately 1.7 km to SE from the stacks. Additional data was obtained from the electrical company that runs the coal power plant. These data covers the years from 2006 to the present. A detailed statistical analysis was performed to identify the most frequent meteorological conditions concerning mainly wind speed and direction. This analysis revealed that the most frequent wind blows from Northwest and North and the strongest winds blow from Northwest. Particulate matter deposition was obtained in two sampling campaigns carried out in summer and in spring. For the first campaign the monthly average flux deposition was 1.90 g/m2 and for the second campaign this value was 0.79 g/m2. Wind dispersion occurred predominantly from North to South, away from the nearest residential area, located at about 6 km to Northwest from the stacks. Nevertheless, the higher deposition fluxes occurred in the NW/N and NE/E quadrants. This study was conducted considering only the contribution of particulate matter from coal combustion, however, others sources may be present as well, such as road traffic. Additional chemical analyses and microanalysis are needed to identify the source linkage to flux deposition levels.
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Taking a Media Anthropology’s approach to dynamics of mediated selfrepresentation in migratory contexts, this thesis starts by mapping radio initiatives produced by, for and/or with migrants in Portugal. To further explore dynamics of support of initial settlement in the country, community-making, cultural reproduction, and transnational connectivity - found both in the mapping stage and the minority media literature (e.g. Kosnick, 2007; Rigoni & Saitta, 2012; Silverstone & Georgiou, 2005) - a case study was selected: the station awarded with the first bilingual license in Portugal. The station in question caters largely to the British population presenting themselves as “expats” and residing in the Algarve. The ethnographic strategy to research it consisted of “following the radio” (Marcus, 1995) beyond the station and into the events and establishments it announces on air, so as to relate production and consumption realms. The leading research question asks how does locally produced radio play into “expats” processes of management of cultural identity – and what are the specificities of its role? Drawing on conceptualizations of lifestyle migration (Benson & O’Reilly, 2009), production of locality (Appadurai 1996) and the public sphere (Butsch, 2007; Calhoun & et al, 1992; Dahlgren, 2006), this thesis contributes to valuing radio as a productive gateway to research migrants’ construction of belonging, to inscribe a counterpoint in the field of minority media, and to debate conceptualizations of migratory categories and flows. Specifically, this thesis argues that the station fulfills similar roles to other minority radio initiatives but in ways that are specific to the population being catered to. Namely, unlike other minority stations, radio facilitates the process of transitioning between categories along on a continuum linking tourists and migrants. It also reflects and participates in strategies of reterritorialization that rest on functional and partial modes of incorporation. While contributing to sustain a translocality (Appadurai, 1996) it indexes and fosters a stance of connection that is symbolically and materially connected to the UK and other “neighborhoods” but is, simultaneously, oriented to engaging with the Algarve as “home”. Yet, besides reifying a British cultural identity, radio’s oral, repetitive and ephemeral discourse particularly trivializes the reproduction of an ambivalent stance of connection with place that is shared by other “expats”. This dynamic is related to migratory projects driven by social imaginaries fostered by international media that stimulate the search for idealized ways of living, which the radio associates with the Algarve. While recurrently localizing and validating the narrative projecting an idealized “good life”, radio amplifies dynamics among migrants that seem to reaffirm the migratory move as a good choice.
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RESUMO - Este estudo teve como principal objectivo a caracterização das atitudes e da adopção de medidas de protecção em períodos de calor e em particular conhecer aquelas que efectivamente foram adoptadas durante a onda de calor de Agosto de 2003 (29 de Julho a 15 de Agosto). Foi realizado um inquérito por via postal, aplicando um questionário aos indivíduos de 18 e mais anos das unidades de alojamento (UA), que constituem a amostra ECOS (Em Casa Observamos Saúde) do Observatório Nacional de Saúde. Estudaram-se 769 indivíduos, o que correspondeu a 25,6% da totalidade dos indivíduos elegíveis nas UA. Uma vez que a amostra ECOS não é autoponderada, foram ponderados os resultados das unidades de alojamento pela variável do Instituto Nacional de Estatística (INE) «número de famílias clássicas» por região e pela «população residente segundo o nível de instrução» obtidas pelos censos de 2001. Os comportamentos referidos como adoptados em épocas de calor que apresentaram maiores percentagens foram «tomar duches ou banhos» (84,6%), «ingestão de líquidos» (79,6%), «uso de roupa leve, larga e clara» (73,2%) e «tomar refeições leves» (53,7%). Durante a onda de calor de 2003, a maior parte da população (92,5%) leu, ouviu ou viu informação sobre os cuidados a ter durante a onda de calor, tendo sido a televisão (95,2%), a rádio (56,3%) e os jornais (49,3%) os meios de comunicação social mais referidos. Cerca de metade da população (51,4%) informou alguém, fundamentalmente a família, sobre os cuidados a ter. Com efeito, durante esta onda de calor verificou-se um maior cuidado em relação a comportamentos mais prejudiciais em épocas de maior calor. Por um lado, a população portuguesa andou menos ao sol (49,4%), fez menos viagens de carro/transportes à hora do calor (39,8%), realizou menos actividades que exigiriam esforço físico (32,5%) e também houve alguma preocupação em beber menos bebidas alcoólicas (26,5%). Por outro lado, aumentaram os comportamentos que já são mais habituais durante o período de Verão, tais como abrir as janelas durante a noite (40,8%), tomar refeições leves (46,7%), tomar mais duches ou banhos (58,5%), o uso de roupas leves largas e claras (42,5%) e o uso de ventoinhas (37,8%). A alteração do comportamento andar ou estar ao sol sem restrições aumenta com o número de meios de comunicação onde se obteve informação. Abrir as janelas de casa durante a noite e tomar duches ou banhos apresentou uma associação com o número de meios de comunicação onde se obteve informação e com o número de pessoas que prestaram informação. Ingerir líquidos e usar roupa leve, larga e clara mostrou também uma dependência do número de meios de comunicação onde se obteve informação.
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One hundred twenty-two early-stage anal canal cancer patients (median age: 69 years) were treated with curative radiotherapy with (70 patients) or without (52 patients) concomitant chemotherapy. Median follow-up was 65 months (range: 4-238). At multivariate analysis, concomitant chemotherapy significantly improved local control (p = .007). Local control significantly influenced all considered endpoints, except the metastases free survival. The global rates of G3-G4 acute and late toxicity were 13.1% and 8.2%, respectively, and they were not increased by concomitant chemotherapy. Finally, concomitant chemotherapy is efficacious and safe in the treatment of T1-2N0 anal canal cancer patients and should be prospectively studied.
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Letter (10 typed pages) addressed to Press and Radio Friends which is attached to an informal history of the Whirlpool Rapids Bridge. The letter was sent from A.E. Parsons, manager of the Whirlpool Rapids Bridge, n.d.
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A one minute radio advertising for the soft drink 7-Up featuring the voice of Eartha Kitt.
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Tesis (Maestro en Ciencias en Ingeniería Eléctrica) U.A.N.L.
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Rapport de recherche
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Tesis (Doctor en Ciencias con Especialidad en Biotecnología) U.A.N.L.
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Le présent mémoire vise à faire avancer la réflexion sur la conception de média alternatif à travers une analyse d’une organisation médiatique dite alternative, soit CISM 89,3 FM, la radio de campus de l’Université de Montréal. À partir de la littérature, l’auteur émet certaines interrogations et explore quelques pistes d’analyse en regard de cet univers médiatique. Suite à un travail sur le terrain, basé sur une série d’entrevues avec des acteurs oeuvrant au sein de CISM, ce travail de recherche permet de mettre en lumière certains éléments peu discutés dans la littérature. L’auteur met notamment en relief l’importance que revêt le statut d’alternatif pour CISM aux yeux de ses artisans, ainsi que la complexité de ce statut et les enjeux qu’il soulève. Le mémoire montre aussi, à travers les propos des personnes interrogées, la difficulté et les tensions avec lesquelles les artisans d’un tel média doivent jongler quotidiennement afin d’être fidèle à ce statut d’alternatif. C’est à travers ses remises en questions, ses points litigieux, ses tensions, ses négociations que CISM se définit à travers ce qu’est ou doit être un média alternatif. Mais, ce sont aussi ces tensions constantes qui lui permettent d’évoluer.
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Ce mémoire de maîtrise porte sur la contribution que pourrait apporter l’Enseignement à distance par radio (EADR) dans la réduction du taux d’échec aux examens du baccalauréat 1ère partie en Haïti. De manière spécifique, nous souhaitions élaborer un programme d’ « Enseignement à distance par radio » (EADR) afin d’aider l’ensemble des candidats bacheliers des classes de Rhéto à préparer les examens du bac 1ère partie. En Haïti, l’Enseignement à distance (EAD) est pratiquement absent. De nombreux pays ayant eu des situations similaires à Haïti ont mis en place des programmes de « Formations ouvertes et à distance » (FOAD) en complémentarité avec le mode d’enseignement classique ou en mode présentiel. La complexité de la situation exige d’envisager diverses pistes pour sortir le système éducatif haïtien de cette léthargie. Si l’on ne peut considérer l’EAD comme l’unique perspective, il est par contre pertinent et souhaitable de l’envisager comme une alternative non négligeable (Lubérisse, 2003). En nous appuyant sur les principales conditions d’efficacité des FOAD définies par Karsenti (2003), les principes théoriques de type R & D (Van der Maren, 2003?), le cadre théorique de la méthodologie de l’évaluation des besoins de Chagnon et Paquette (Institut universitaire des Centres Jeunesses de Montréal, 2005) et de Roegiers, Wouters & Gerard (1992), nous avons élaboré les grandes lignes générales de ce programme d’EADR et les avons soumises à douze (12) acteurs clés du système éducatif haïtien (4 élèves, 3 parents, 2 enseignants et 3 spécialistes de la radio ou de l’EADR). Cette ébauche de programme comportait principalement les objectifs du programme d’EADR, la méthode pédagogique, le contenu et les conditions de mise en œuvre. Des données recueillies par le biais d’entrevues individuelles il ressort que l’implantation d’un programme d’EADR peut être bénéfique au système éducatif haïtien, particulièrement sur les résultats d’examens officiels du baccalauréat 1ère partie. Les douze participants à notre recherche, croient que l’objectif poursuivi par le programme d’EADR est tout à fait réalisable et important pour le public cible. Tout en notant l’aspect positif du programme d’EADR proposé, les participants réclament certaines modifications quant à la méthode pédagogique, au contenu et aux conditions de mise en œuvre. Ainsi, les recommandations faites par les douze acteurs clés du système éducatif, jointes à notre recension nous ont permis d’élaborer un nouveau programme d’EADR revu et corrigé qui pourra servir de base à une évaluation plus large.
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Ce mémoire décrit l’imaginaire sonore tel qu’il s’est transformé par l’apparition de dispositifs de reproduction (téléphone, phonographe et radio) à la fin du 19ème siècle et au début du 20ème siècle. Si ces appareils de reproduction sonore signalent un nouveau contexte socioculturel permettant la captation, la conservation et la transmission de manifestations sensibles, ils transforment également la manière de concevoir le son, ils modifient le statut de l’audition par rapport aux autres sens et reconfigurent un imaginaire qui traduit un rapport à soi, à autrui et au monde. Cette étude littéraire de la reproductibilité sonore propose une réflexion entre technologie et poétique en questionnant l’idée de communication. L’élément spécifique qui caractérise les appareils de reproduction sonore est un objet technique nommé «transducteur ». Je considère le transducteur à la fois comme métaphore et matérialité de médiation; conçu en termes de dispositif de transduction, ce concept permet une différente compréhension des pratiques sociales et de l’imaginaire constituant cet artefact culturel.
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Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal