279 resultados para Travellers


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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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We report the first case of ocular infestation by Loa loa in Brazil. Loiasis is caused by infestation with Loa loa, a filarial parasite originally found in the rainforests of western and central Africa. It is transmitted by the bite of the fly Chrysops and has been recently described in other places other than Africa, in African immigrants or travellers. Our case is a 33 year-old woman from Cameroon who was living in Sao Paulo, Brazil, for 5 years. She was asymptomatic until one morning she started feeling "something moving" in the left eye. Under topical anesthesia, on the slit lamp, a moving worm was removed from the subconjunctival space, which later was confirmed to be a male Loa loa adult specimen. Blood tests revealed microfilaraemia of 129 mf/mL. The patient was treated with 400 mg oral albendazole for 3 weeks and 60 mg prednisone. This report illustrates an unusual ocular disease, which is extremely rare outside of Africa, but easily diagnosed and treated. Ophthalmologists should be aware of it, in face of an increasingly globalized world.

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Salmonella and Campylobacter are common causes of human gastroenteritis. Their epidemiology is complex and a multi-tiered approach to control is needed, taking into account the different reservoirs, pathways and risk factors. In this thesis, trends in human gastroenteritis and food-borne outbreak notifications in Italy were explored. Moreover, the improved sensitivity of two recently-implemented regional surveillance systems in Lombardy and Piedmont was evidenced, providing a basis for improving notification at the national level. Trends in human Salmonella serovars were explored: serovars Enteritidis and Infantis decreased, Typhimurium remained stable and 4,[5],12:i:-, Derby and Napoli increased, suggesting that sources of infection have changed over time. Attribution analysis identified pigs as the main source of human salmonellosis in Italy, accounting for 43–60% of infections, followed by Gallus gallus (18–34%). Attributions to pigs and Gallus gallus showed increasing and decreasing trends, respectively. Potential bias and sampling issues related to the use of non-local/non-recent multilocus sequence typing (MLST) data in Campylobacter jejuni/coli source attribution using the Asymmetric Island (AI) model were investigated. As MLST data become increasingly dissimilar with increasing geographical/temporal distance, attributions to sources not sampled close to human cases can be underestimated. A combined case-control and source attribution analysis was developed to investigate risk factors for human Campylobacter jejuni/coli infection of chicken, ruminant, environmental, pet and exotic origin in The Netherlands. Most infections (~87%) were attributed to chicken and cattle. Individuals infected from different reservoirs had different associated risk factors: chicken consumption increased the risk for chicken-attributed infections; animal contact, barbecuing, tripe consumption, and never/seldom chicken consumption increased that for ruminant-attributed infections; game consumption and attending swimming pools increased that for environment-attributed infections; and dog ownership increased that for environment- and pet-attributed infections. Person-to-person contacts around holiday periods were risk factors for infections with exotic strains, putatively introduced by returning travellers.

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Der Ökotourismus hat sich in den letzten Jahren zu einer Tourismussparte entwickelt, die nicht nur immer mehr Interessenten unter den Nutzern findet, sondern auch vielfältige Forschungsmöglichkeiten eröffnet.rnAus interdisziplinärer Betrachtungsweise kann man sowohl in den Gebieten der Biologie, der Wirtschaft, der Geographie, aber auch der Politik forschend tätig werden. rnDa der Tourismus in den letzten Jahren eine immer größere Bedeutung gerade für Länder mit weitestgehend intakten Naturressourcen erlangt hat, stellt sich die Frage inwieweit die Wirtschaft eines Landes auf diese Einnahmequelle angewiesen ist und ob nicht die ökologischen Belange immer weiter in den Hintergrund treten.rnAus diesem Ansatz heraus erfolgte zunächst eine qualitative und quantitative Bestandsaufnahme, die ein klares Bild vom derzeitigen Zustand in der Region ermöglicht. Darüber hinaus werden im Rahmen der Untersuchungen Zukunftsperspektiven aufgezeigt. Diese sollen verdeutlichen, inwieweit man steuernd in solche dynamischen Entwicklungsprozesse eingreifen kann oder soll.rnDie Schwerpunkte dieser Arbeit liegen in dem Bereich der Befragung von Touristen und in der Ausarbeitung eines digitalen Geländemodells zur späteren Nutzung in einem aufzubauenden Nationalpark-Infozentrum. Auf der Grundlage dieser Untersuchungen wurde ein touristisches Nutzungskonzept entwickelt und auf seine ökologischen Umsetzungschancen hin untersucht. Der Aspekt des Ökotourismus wird einleitend erörtert und definiert. Anschließend werden die Potenziale der norwegischen Tourismuswirtschaft untersucht. Die Befragungsergebnisse sowohl der norwegischen Besucher als auch der ausländischen Touristen werden in verschiedenen Korrelationen näher untersucht.rnEin gesonderter Bereich der Untersuchungen gilt dem Problemfeld des Wildcampings in Norwegen. Die dramatischen Entwicklungen der letzten Jahre rufen immer mehr Aktivisten auf den Plan. Da die Deutschen die größte Besuchergruppe darstellen, wurden innerhalb der Jahre 2003 bis 2006 Einzelinterviews geführt, um einen Überblick über das Übernachtungsverhalten der Deutschen in Norwegen gewinnen zu können. In den vergangenen 10 Jahren sind die deutschen Besucherzahlen in Norwegen leicht rückläufig, während die der Niederländer kontinuierlich steigen.rnAuf diesen Ergebnissen basierend wurden problemzentrierte Interviews mit Wohnmobilreisenden, der größten Gruppe der Individualreisenden, durchgeführt. rnMehr als 600.000 Nächte pro Jahr verbrachten die deutschen Wohnmobilreisenden außerhalb der Campingplätze, was ökologische und ökonomische Auswirkungen hat und nicht mehr mit dem in Norwegen geltenden „Allemansrett“, dem Jedermannsrecht, vereinbar ist. rnGerade die Touristen, die mit dem Wohnmobil reisen, können nur schwer mit anderen Reisenden verglichen werden, da sie mit einer völlig anderen Reiseauffassung mehr oder weniger autark unterwegs sind. Dabei legen sie besonders große Distanzen zurück und haben sich zum Ziel gesetzt, möglichst viel in kurzer Zeit zu sehen und zu erleben. Für alle Touristengruppen wurde untersucht, auf welchem Weg die Informationen für die geplante Reise beschafft wurden. Der Reiseführer ist der hauptsächliche Informationslieferant und ist teilweise für das Verhalten der Urlauber mitverantwortlich. Es konnte festgestellt werden, dass das Image des Landes und die Reisemotive das Reiseverhalten und die Wahrnehmung determinieren. Eine Untersuchung der so genannten Pull- und Push-Faktoren ergab, dass die nahezu noch unberührte Natur, die raue Landschaft sowie Ruhe und Erholung die entscheidenden Pull-Faktoren für Norwegenreisende sind. Dabei überprägt das Image Norwegens als „wildes Naturland“ die Wahrnehmung für verschiedene Problembereiche, die in Norwegen, wie auch in vielen anderen Ländern Europas, durchaus vorhanden sind. rnProblemfelder, wie Landschaftsausbeutung, Wildcamping, reduziertes Konsumverhalten und damit einhergehende rückläufige Besucherzahlen, können aber durch innovative Tourismuskonzepte und neue Reiseformen abgebaut werden. Hierbei sind Medien, wie Reiseführer, Internet und Reisemagazine, in die Pflicht zu nehmen.

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L'Europe commence à découvrir le désert à la fin du XVIIIe siècle. Ce milieu présente des aspects multiples aux premiers explorateurs, qui le décrivent comme un lieu vivant et varié. La géopolitique constitue le premier approche d'analyse : le désert peut être rendu plus viable si mieux administré, donc libre de la domination ottomane. Au cours du siècle, le tourisme se développe, aussi en raison de la colonisation ; l'expérience du désert devient commune, et les voyageurs partent en quête d'une expérience spirituelle aussi bien que d'une aventure. Le désert devient un écran de projection pour la rêverie et les souvenirs des Européens (la Bible et les topos traditionnels demeurent actifs dans l'imaginaire occidental) ; seules certaines caractéristiques de ce milieu sont dès lors appréciées par les voyageurs. Ensuite, avec l'âge du Réalisme, devient objet d'appréciation de la part des peintres. Grâce à la médiation de l'art, la littérature commence à regarder au désert d'un point de vue esthétique, et elle lui reconnaît un charme de la nudité et du dépouillement. La mort et le minéral caractérisent ce milieu vers la fin du siècle ; le désert se vide, et devient le "désert de sable" que nous tous connaissons aujourd'hui.

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Le sujet de cette recherche est la perception chez les voyageurs occidentaux et grecs du XIXᵉ siècle de zones de la Méditerranée depuis toujours point d’intersections culturelles : les villes d’Athènes et de Constantinople. L’objectif de la recherche est de reconstruire la contribution des hommes de lettres, français et grecs, à la constitution de l’identité nationale selon le schéma mis en évidence par Benedict Anderson dans « Communautés Imaginées » On a tenté en se référant au corpus d’identifier dans la littérature de voyage du XIXᵉ siècle, dans le sillage de « Orientalismo » de Edward Said, comment Philhellénisme et Exotisme orientalisant, tous deux d’empreinte romantique, ont contribué à inventer pour Athènes une identité occidentale et pour Istanbul une identité orientale, ignorant presque l’existence entre les deux villes d’une commune matrice byzantine–ottomane ou mieux, l’appartenance commune à l’ensemble géopolitique de la Région Intermédiaire identifiée par Dimitri Kitsikis.

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Intelligent Transport Systems (ITS) consists in the application of ICT to transport to offer new and improved services to the mobility of people and freights. While using ITS, travellers produce large quantities of data that can be collected and analysed to study their behaviour and to provide information to decision makers and planners. The thesis proposes innovative deployments of classification algorithms for Intelligent Transport System with the aim to support the decisions on traffic rerouting, bus transport demand and behaviour of two wheelers vehicles. The first part of this work provides an overview and a classification of a selection of clustering algorithms that can be implemented for the analysis of ITS data. The first contribution of this thesis is an innovative use of the agglomerative hierarchical clustering algorithm to classify similar travels in terms of their origin and destination, together with the proposal for a methodology to analyse drivers’ route choice behaviour using GPS coordinates and optimal alternatives. The clusters of repetitive travels made by a sample of drivers are then analysed to compare observed route choices to the modelled alternatives. The results of the analysis show that drivers select routes that are more reliable but that are more expensive in terms of travel time. Successively, different types of users of a service that provides information on the real time arrivals of bus at stop are classified using Support Vector Machines. The results shows that the results of the classification of different types of bus transport users can be used to update or complement the census on bus transport flows. Finally, the problem of the classification of accidents made by two wheelers vehicles is presented together with possible future application of clustering methodologies aimed at identifying and classifying the different types of accidents.

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As a self-styled 'female Columbus', E. Catherine Bates took a transcontinental journey across North America with a woman companion in the late 1880s and, on her return to England, published A Year in the Great Republic . This paper, following critical theory approaches to the study of travel writing, explores the ways in which several of Bates's many-layered social identities as a woman of the British e lite class came to the fore in her travel narrative. I argue that Bates constructed her narrative primarily around her shifting gender identities- as 'feminine' and 'feminist'- and suggest that imperialistic writing was less apparent because she was travelling to a place that had an 'empire-to-empire' rather than a 'colony-to-empire', relationship to Britain during its 'Age of Empire'. In this paper I am searching for a middle ground between what I have termed 'modernist' interpretations of women's travel writing and the more recent post-structural interpretations. I make the case that Victorian women travellers' revisionist commentary on gender roles, as well as their observations of domestic scenes, should remain in focus as we continue to mark them for historical study.

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Hepatitis A virus (HAV) exposure in unprotected adults may cause severe and serious symptoms, with risk of both morbidity and mortality increasing with age. As seroprevalence of HAV is low in industrialised countries, and an increasing number of people, with an increasing median age, travel from areas of low HAV endemicity to high endemicity, pre-travel vaccination is warranted. Vaccination of the elderly against HAV, however, may be associated with reduced seroprotection, since the immune response decreases with age. Studies with monovalent hepatitis A vaccine or combined hepatitis A and B vaccine show good efficacy in adults in general. Few studies have assessed the immune response in older adults. The only prospective study with monovalent hepatitis A vaccine in the elderly showed a reduced seroprotection of approximately 65% after a single primary dose in subjects over the age of 50 years, while seroprotection was 98% in this age group after receiving a booster dose. The only prospective study with combined hepatitis A and B vaccine in younger subjects or older than 40 years showed similar seroprotection (99-100%) against HAV compared to a monovalent vaccine after receiving three doses. As data on seroprotection for HAV in the elderly are limited, further studies are needed to elucidate how optimal protection in the elderly can be achieved. In the mean time, based on the available data, the suggestion is made to screen elderly travellers to areas endemic for HAV for the presence of naturally acquired immunity, and, if found susceptible, be immunised well in advance of their trip, to allow time for post-vaccination antibody testing and/or administration of a second dose of the vaccine.

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Intercultural challenge, “tale” and social educational strategy, Rome, November 2006: Police and Teachers deal differently with a little group of travellers. The analysis of this recent episode shows that intercultural issues are the basis of the educational commitment of the teachers but also of the prejudice of police and other people looking from outside to the relationship between teachers and travellers. The paradox of a double ethic concerning travellers needs to be deconstructed by the antiracist approach based on children rights. At the same time educational intervention cannot deal efficiently with emergency situations concerning children without cooperation with social work. The article underlines the role of democratic educational institutions in the developing appropriated strategies in dealing with complexes social issues which are not just to be “culturalised”.

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Since its introduction to the market in 1985, mefloquine has been used for malaria chemoprophylaxis by more than 35 million travellers. In Europe, in 2014, the European Medicines Agency (EMA) issued recommendations on strengthened warnings, prescribing checklists and updates to the product information of mefloquine. Some malaria prevention advisors question the scientific basis for the restrictions and suggest that this cost-effective, anti-malarial drug will be displaced as a first-line anti-malaria medication with the result that vulnerable groups such as VFR and long-term travellers, pregnant travellers and young children are left without a suitable alternative chemoprophylaxis. This commentary looks at the current position of mefloquine prescribing and the rationale of the new EMA recommendations and restrictions. It also describes the new recommendations for malaria prophylaxis that have been adapted by Switzerland, Germany, Austria and Italy where chemoprophylaxis use is restricted to high-risk malaria-endemic areas.

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Se trata de un primer acercamiento a una posible teoría de la "Imagología regional", aplicada a la imagen de Mendoza obtenida a través de viajeros europeos del siglo XIX A partir de la regionalización de la literatura de viaje propiciada por los historiadores Samuel Trifilo y Edmundo Correas para el contexto mendocino, se desarrolla la perspectiva de una imagen de lo cultural, como contracara de la reducción a la motivación básicamente ideológica de los viajeros sustentada por Mary Louise Pratt.. El análisis de una serie de relatos de viaje a Mendoza permite distinguir para la primera mitad del siglo XIX entre estereotipos positivos (así en Haigh) y negativos (así en Darwin) como "imágenes residuales" (Zamorano de Montiel) referidas a la percepción de lo cultural, tanto puntuales como integradas en una "relación jerarquizada" (Pageaux). Ya en la segunda mitad de siglo se impone una documentación diferenciada y hasta estadística de la vida cultural en Mendoza, que desemboca en el entorno del 1900 en el estereotipo de un asombroso progreso argentino, registrado también en Mendoza.