A pesquisa empírica desta dissertação foi realizada junto à comunidade do Boqueirão, em Vila Bela da Santíssima Trindade/MT, no contexto sistêmico e arqueológico, entre 2008 e 2011. Através dela, procuramos interpretar processos culturais nessa área remanescente de quilombo, relacionados a elementos da paisagem, em especial as árvores. De um lado, consideramos a importância que as plantas ocupam nos cultos afro-brasileiros, e, de outro, o potencial mnemônico e distintivo das árvores, capazes de despertar recordações nesse grupo de afrodescendentes e sua memória. Os dados coletados no contexto sistêmico foram aplicados na interpretação do sítio arqueológico, com a intenção de ampliar a variação diacrônica da análise. Paralelamente ao levantamento no Boqueirão, realizamos pesquisa de campo em cinco terreiros de cultos afro-brasileiros, quatro em na região metropolitana de São Paulo e um na zona rural de Cuiabá. Chegamos a parte do passado familiar de membros dessa comunidade, e também de um passado ancestral, pois alguns dos dados obtidos estão relacionados até mesmo a suas origens africanas. Esta dissertação também tem como objetivo contribuir para o incremento dos estudos africanos e afro-brasileiros no campo da arqueologia. Concluímos que existem árvores cujo significado simbólico tem correspondência com o modo de pensamento da comunidade, tanto dos terreiros estudados, como aponta a literatura sobre a religiosidade afro-brasileira, quanto no quilombo do Boqueirão. Concluímos também que os estudos antropológicos e sociológicos sobre o Negro no Brasil deveriam ser mais considerados pela arqueologia e, sobretudo pela arqueologia da diáspora africana, uma das ramificações dessa disciplina em que se pautaram nossos estudos. / The empirical research of this dissertation was conducted in an archeological site in the Boqueirão community, in Vila Bela da Santíssima Trindade (state of Mato Grosso, Brazil), in the systemic context between 2008 and 2011. Throughout this work, we have aimed to perceive cultural processes in this quilombo remnant area, related to certain landscape elements, especially trees. We have considered not only the important role of plants in the Afro-Brazilian religions, but their distinctive and mnemonic potential as well, able to bring up reminiscences in this afro-descendant group and its memory. Data collected in the systemic context were used for the interpretation of the archeological site, in order to broaden the diachronic variation of the analysis. Parallel to the data collection in Boqueirão, we have conducted field work in five Afro-Brazilian \"terreiros\" (places of worship), four in the Metropolitan Area of São Paulo and one in Cuiabá countryside (in the state of Mato Grosso). We were able to trace back to part of the family background of some members of this community, in addition to part of their ancient past, for some of the data obtained led to their African roots. This dissertation also aims to contribute to the general improvement of African and Afro-Brazilian studies in the field of Archaeology. We conclude that there are trees which bear a symbolic significance to the way of thinking of the community, both inside the studied \"terreiros\", in accordance with the Afro-Brazilian religion literature, and also in the Boqueirão Quilombo. We also conclude that anthropological and sociological studies about the black population in Brazil should be taken more into consideration by Archaeology, and, above all, by the Archaeology of the African Diaspora, one the branches of this field of study upon which our studies were based.

No description available.

New radio telescopes under development, will significantly enhance the capabilities of radio astronomy in the Southern Hemisphere. South Africa, in particular, is actively involved in the development of a new array (MeerKAT) as well as in the expansion of existing very long baseline interferometer arrays in the south. Participation in these new developments demands a thorough understanding of radio astronomy techniques, and data analysis, and this thesis focusses on two projects with the aim of gaining such experience. The Southern Hemisphere very long baselines array is not well served with calibrator sources and there are significant gaps in the present calibrator distribution on the sky. An adequately dense, well distributed, set of strong, compact calibrator or reference sources is needed. With this in mind, observations using the Southern Hemisphere long baseline array were conducted to investigate a sample of candidate calibrator sources. The compactness of the sources was investigated and new potential calibrators have been identified. Single antenna radio spectroscopy of OH masers has identified sources of 1720 MHz emission associated with supernova remnants at the shock interface between the expanding supernova remnant and a molecular cloud. Models indicate that these masers are shock excited and can only be produced under tight physical constraints. Out ows from newly-formed stars create nebulous regions known as Herbig-Haro objects when they interact with the surrounding medium, and these regions are potentially similar to those seen in supernova remnants. If conditions behind the shock fronts of Herbig-Haro objects are able to support 1720-MHz OH masers they could be a useful diagnostic tool for star formation. A survey toward Herbig-Haro objects using a single-dish radio telescope did detect 1720-MHz OH lines in emission, but neither their spectral signature nor follow-up observations with the Very Large Array showed evidence of maser emission. / Mathematical Sciences / Ph.D. (Astronomy)

Thesis (PhD(Agric) (Conservation Ecology and Entomology))--University of Stellenbosch, 2010. / ENGLISH ABSTRACT: See full text document for abstract / AFRIKAANSE OPSOMMING: sien volteks dokument vir die opsomming

Camp met en présence un officier nazi et ses Juifs : une petite fille s’appuyant sur sa vie d’avant afin de survivre dans sa vie d’après, une jeune femme d’une cinglante liberté intérieure et un groupe de prisonniers, la masse grise. Ce récit se déroule en quelques jours dans un camp d’extermination, en Pologne. Il y est question d’un projet insensé, imaginé et mis en œuvre par le Nazi dont le discours s’apparente à de confuses et dérisoires logorrhées. La recherche d’une humanité déniée, à la base du dévoilement de l’individualité des personnages (prisonniers), émane de la grâce, de l’authenticité et de la force vitale de la protagoniste, la petite fille, tendue vers son plan-de-quand-même-vie. Forêt, écrit en parallèle, puis à la fin de Camp, n’est pas sa suite, mais l’est aussi… Court récit poétique, il raconte la traversée d’une forêt par une femme à la recherche de ses édens. Le lieu, interpellé et très souvent conspué pour ce qu’il est devenu, devient un actant. Forêt, se servant de ses restes mythiques, contraint le pas-à-pas de la femme, perdue d’avance. L’essai, Quatre objets de mémoire, porte sur l’appropriation et la transmission de la mémoire de la Shoah, à partir de restes, de détails, de petits riens, perçus ici comme d’imaginables traces. J’interroge les signes singuliers d’improbables objets (feuillets administratifs du Troisième Reich, clichés fragmentaires d’Auschwitz-Birkenau et photographies de ses bois et de ses latrines) afin d’y débusquer de petits morceaux du caché, du secret et de l’innommable de la Solution finale. L’affect ressenti en présence de ces objets, par ce que je nomme, le nécessaire abandon, y est analysé dans le dessein d’en saisir leurs douleurs et de les rendre miennes. L’œuvre de l’artiste de la photo, Marie-Jeanne Musiol, sur Auschwitz-Birkenau, est à la base de ce désir de mémoire pérenne. / Camp presents a Nazi officer and his Jews : a little girl leaning on her previous life so that she’ll survive in her afterwards life, a young woman livened up by a pungent inner freedom and a group of prisoners, the grey herd. This story takes place within few days inside an extermination camp, in Poland. It is about an insane plan, envisioned and implemented by the Nazi whose discourse is similar to muddled and vacuous logorrheas. At the very roots of the unveiling of the character’s individuality (the prisoners), the quest for a denied humanity emanates from the grace and the vital force of the protagonist, the little girl, towards her plan-of-anyhow-life. First written in parallel then in the end, Forêt is not the continuation of Camp even if it is, as well… This brief poetical narrative relates a woman’s crossing of a forest while searching for her Edens. Hailed and quite often jeered for what it became, the site turns into an actant. Through its mythical remnants, Forest ergo compels the woman’s doomed step-by-step. The essay Quatre objets de mémoire focuses on the appropriation and transmission of the memory of the Holocaust through remnants, details, small things regarded here as imaginable traces. I examine quaint signs of unlikely objects (Third Reich’s administrative leaflets, Auschwitz-Birkenau’s fragmented pictures and images of its woods and latrines) in order to disclose small pieces of what is the hidden, the secretive and the unspeakable about the Final Solution. The affect experienced upon their contact, through what I call the “necessary abandonment”, is thusly analyzed with the purpose to comprehend the corresponding pains and to seize them for myself. Photo Artist Marie-Jeanne Musiol’s work on Auschwitz-Birkenau underlies this perennial desire to remember.

Made available in DSpace on 2017-07-21T14:49:45Z (GMT). No. of bitstreams: 1 Adriana R A Cararo.pdf: 2592961 bytes, checksum: 333a7a523e628bcfb0cede0bd365f0a1 (MD5) Previous issue date: 2016-08-29 / ABSTRACT: The Wintering Armory Quilombola community of Tile was founded in 1868, when the Group of thirteen freed slaves took over the land area of Wintering Armory of tile, located in the municipality of Reserva do Iguaçu, Paraná, left in inheritance to the same, by his former mistress, Balbina Francisca de Siqueira, as testament dating from 1860. Currently the community is composed of about 350 families, which are divided into four nuclei (Guarapuava, pinion, Settlement and Embankment), waiting for the completion of the process of titling their territory, initiated in 2005, Is by the INCRA. Since they had to leave their land in 1975, the community sought to retrieve them, promoting several lawsuits, without, however, succeed. The last alternative fetched then, like so many other Rural Black Communities, fighting to be recognised, respected and kept the areas that traditionally occupy, went to fitness for existing legislation. Article 68 ADCT, included in the Federal Constitution of 1988, after mobilization of the black movement, ensures permanent land titling that are occupying the remaining Quilombo Communities calls. After signing the Decree 4,887/2003, communities such as the Wintering Armory of tile that were no longer in their land, have been given the right to have them in physical form, using the principle of attribution. In this way, this work aims to show the importance the quilombola legislation, principally the Decree 4,887, has for these black rural communities, which for years struggling to get possession of the Earth. / A Comunidade Quilombola Invernada Paiol de Telha foi constituída em 1868, quando o grupo de treze escravos libertos assumiu a área de terra da Invernada Paiol de Telha, localizada atualmente no município de Reserva do Iguaçu, Paraná, deixada em herança para os mesmos, pela sua antiga senhora, Balbina Francisca de Siqueira, conforme testamento datado de 1860. Atualmente a Comunidade é composta por cerca de trezentas e cinquenta famílias, que estão distribuídas em quatro núcleos (Guarapuava, Pinhão, Assentamento e Barranco), a espera da conclusão do processo de titulação do seu Território Quilombola, iniciado em 2005, junto ao INCRA. Desde que tiveram de sair das suas terras em 1975, a Comunidade procurou reavê-las, promovendo diversas ações judiciais, sem, no entanto, obterem êxito. A última alternativa buscada então, a exemplo de tantas outras Comunidades Rurais Negras, que lutam para terem reconhecidas, respeitadas e tituladas as áreas que tradicionalmente ocupam, foi à adequação a Legislação vigente. O Artigo 68 ADCT, incluído na Constituição Federal de 1988, após mobilização do Movimento Negro, garante a titulação definitiva das terras que estejam ocupando as chamadas Comunidades Remanescentes de Quilombo. Após a assinatura do Decreto 4.887/2003, comunidades como a Invernada Paiol de Telha que não estavam mais em suas terras, passaram a ter o direito de tê-las tituladas, utilizando-se do principio da auto atribuição. Deste modo, este trabalho objetiva mostrar a importância que a legislação quilombola, principalmente o Decreto 4.887, tem para essas comunidades rurais negras, que há anos lutam para conseguir a posse da terra.

Made available in DSpace on 2016-04-25T20:22:53Z (GMT). No. of bitstreams: 1 Berenice W Pompilio.pdf: 4623209 bytes, checksum: f8f19e6ac13297f7a082b0a7d510de68 (MD5) Previous issue date: 2009-08-25 / This study aims to make an incursion in the daily lives of the inhabitants of the Amapá, especially with the remnants of quilombos and riverside communities of the archipelago of Bailique. From an ethnographic research carried out since 2004, this work was inspired, mainly, on the ideas of Maurice Halbwachs, Pierre Nora and Ecléa Bosi, about collective memory and its peculiarities, hand in hand with the historical memory and local experience. As additional theories related to discursive memory, were used the thoughts about the silence of memory and the ideas of Barthes about the noise of the memory found in speech. Bringing initially an overview of Amapá, with its historical and cultural events, the study shows a kind of diary of the journey, narrating from the preparations for the interviews beyond the theoretical canonicals of methodology for its implementation. Information from the corpus, then analyzed, guided the discussion of collective memory and its role in shaping the cultural link between the real with the memories of abstractions fruit production of a speech that creates meaning and transfers knowledge. Guided the analysis of the corpus to considerations about the opportunity to collect something from the people and their memories, it establishes a place that deserves further research on the intangible right of property, land, gestures, objects, singing and speech. The analysis revealed in intangible wealth leads, indeed, a testimony of strength of associations of remnants of quilombos , at present in the fifth generation, which remain alive outlining areas, reminding rights, scheduling changes, reprinted parties and dances, without losing of the sight the past that preserved them and the way that encloses them / O presente estudo tem como objetivo fazer uma incursão no cotidiano dos habitantes do Amapá, especialmente junto aos remanescentes de quilombos e comunidades ribeirinhas do arquipélago do Bailique. A partir de uma pesquisa etnográfica desenvolvida desde 2004, este trabalho foi inspirado, principalmente, nas ideias de Maurice Halbwachs, Ecléa Bosi e Pierre Nora, sobre memória coletiva e suas particularidades, de mãos dadas com a memória histórica e da vivência local. Configuraram-se, ainda, como teorias complementares, relacionadas à memória discursiva, as que tratam do silêncio, além das ideias sobre os ruídos da memória, encontradas no discurso de Barthes. Trazendo, inicialmente, uma visão geral do Amapá, com seu histórico e manifestações culturais, o estudo apresenta, logo em seguida, uma espécie de diário da viagem, narrando desde os preparativos para a mesma até as entrevistas realizadas no local, além dos paramentos teóricos e metodológicos para a sua realização. As informações do corpus, posteriormente analisadas, orientam a discussão da memória coletiva e de seu importante papel na formação cultural entre a articulação do real e do vivido com as lembranças frutos de abstrações produtivas de um discurso que cria significados e transfere conhecimento. Encaminhando as análises do corpus para considerações sobre a oportunidade de recolher algo entre os habitantes, como suas lembranças, é estabelecido um lugar que merece aprofundamento de pesquisas sobre o direito de propriedade imaterial, a terra, os gestos, os objetos, os cantos e o discurso. A riqueza imaterial revelada na análise conduz, ainda, para um testemunho de resistência das uniões de remanescentes de quilombos, hoje na quinta geração, que permanecem vivos nos seus habitantes, delineando espaços, lembrando direitos, agendando mudanças, reeditando festas e danças, sem perder de vista o passado que os conservou e o meio que os cerca

Made available in DSpace on 2016-04-26T14:57:46Z (GMT). No. of bitstreams: 1 Berenice W Pompilio.pdf: 4623209 bytes, checksum: f8f19e6ac13297f7a082b0a7d510de68 (MD5) Previous issue date: 2009-08-25 / This study aims to make an incursion in the daily lives of the inhabitants of the Amapá, especially with the remnants of quilombos and riverside communities of the archipelago of Bailique. From an ethnographic research carried out since 2004, this work was inspired, mainly, on the ideas of Maurice Halbwachs, Pierre Nora and Ecléa Bosi, about collective memory and its peculiarities, hand in hand with the historical memory and local experience. As additional theories related to discursive memory, were used the thoughts about the silence of memory and the ideas of Barthes about the noise of the memory found in speech. Bringing initially an overview of Amapá, with its historical and cultural events, the study shows a kind of diary of the journey, narrating from the preparations for the interviews beyond the theoretical canonicals of methodology for its implementation. Information from the corpus, then analyzed, guided the discussion of collective memory and its role in shaping the cultural link between the real with the memories of abstractions fruit production of a speech that creates meaning and transfers knowledge. Guided the analysis of the corpus to considerations about the opportunity to collect something from the people and their memories, it establishes a place that deserves further research on the intangible right of property, land, gestures, objects, singing and speech. The analysis revealed in intangible wealth leads, indeed, a testimony of strength of associations of remnants of quilombos , at present in the fifth generation, which remain alive outlining areas, reminding rights, scheduling changes, reprinted parties and dances, without losing of the sight the past that preserved them and the way that encloses them / O presente estudo tem como objetivo fazer uma incursão no cotidiano dos habitantes do Amapá, especialmente junto aos remanescentes de quilombos e comunidades ribeirinhas do arquipélago do Bailique. A partir de uma pesquisa etnográfica desenvolvida desde 2004, este trabalho foi inspirado, principalmente, nas ideias de Maurice Halbwachs, Ecléa Bosi e Pierre Nora, sobre memória coletiva e suas particularidades, de mãos dadas com a memória histórica e da vivência local. Configuraram-se, ainda, como teorias complementares, relacionadas à memória discursiva, as que tratam do silêncio, além das ideias sobre os ruídos da memória, encontradas no discurso de Barthes. Trazendo, inicialmente, uma visão geral do Amapá, com seu histórico e manifestações culturais, o estudo apresenta, logo em seguida, uma espécie de diário da viagem, narrando desde os preparativos para a mesma até as entrevistas realizadas no local, além dos paramentos teóricos e metodológicos para a sua realização. As informações do corpus, posteriormente analisadas, orientam a discussão da memória coletiva e de seu importante papel na formação cultural entre a articulação do real e do vivido com as lembranças frutos de abstrações produtivas de um discurso que cria significados e transfere conhecimento. Encaminhando as análises do corpus para considerações sobre a oportunidade de recolher algo entre os habitantes, como suas lembranças, é estabelecido um lugar que merece aprofundamento de pesquisas sobre o direito de propriedade imaterial, a terra, os gestos, os objetos, os cantos e o discurso. A riqueza imaterial revelada na análise conduz, ainda, para um testemunho de resistência das uniões de remanescentes de quilombos, hoje na quinta geração, que permanecem vivos nos seus habitantes, delineando espaços, lembrando direitos, agendando mudanças, reeditando festas e danças, sem perder de vista o passado que os conservou e o meio que os cerca

Devido o dinamismo e complexidade estrutural observada nas paisagens antrópicas, pesquisas contínuas são necessárias para melhorar o conhecimento sobre quais os impactos delas na biodiversidade, bem como para entender quais espécies ocorrentes nestas paisagens refletem as condições ambientais lá existentes. Desse modo, tomando a avifauna como representante da biodiversidade presente nestas paisagens, esta tese objetivou: 1) caracterizar as assembleias de aves ocorrentes nos remanescentes florestais de Mata Atlântica inseridos em paisagem antrópica agrícola, bem como as assembleias que ocorrem no interior das culturas de pasto e cana-de-açúcar, 2) identificar um método analítico adequado para acessar a integridade ecológica existente nos remanescentes florestais por meio das assembleias de aves, 3) avaliar o efeito da estrutura e dinâmica destas paisagens nas assembleias de aves ocorrentes nos remanescentes florestais, 4) identificar quais características da paisagem antrópica agrícola influenciam as aves ocorrentes no interior das culturas de pasto e cana-de-açúcar. Assembleias de aves foram amostradas mensalmente durante um ano (Nov2011-Nov2012) por meio de pontos fixos e transectos em oito remanescentes florestais com diferentes tamanhos (3-115ha) e históricos de degradação, e oito sítios amostrais localizados no interior das culturas agrícolas (quatro em pasto e quatro em cana-de-açúcar). Estes foram selecionados dentro de cinco unidades amostrais de uma paisagem tipicamente (16 km2) agrícola do Estado de São Paulo (Bacia do Rio Corumbataí). O índice de serviços ecossistêmicos de Ferraz et al. (2014) foi adotado como uma medida do grau de distúrbios antrópicos presente nos remanescentes florestais do qual leva em consideração a dinâmica e estrutura deles. Já as características das paisagens nas culturas agrícolas foram coletadas em duas escalas de análise (buffers circulares de 600 e 1000m) levando em consideração métricas que pudessem refletir uma maior heterogeneidade da paisagem. No total, 191 espécies foram observadas nos remanescentes florestais, enquanto que 137 nas culturas agrícolas. As aves com hábitos florestais, não-florestais, hábitos mistos florestais-não-florestais, pequenos insetívoros de sub-bosque, aves que forrageiam no estrato médio dos remanescentes, espécies endêmicas e ameaçadas foram os melhores indicadores ecológicos nos remanescentes. Estes grupos formaram a base de dados do Índice de Integridade Biótica (IIB) um método multimétrico que obteve um melhor desempenho em refletir a integridade existente nos remanescentes quando comparado com os níveis de sensibilidade a distúrbios antrópicos de Parker III et al. (1996), riqueza geral das assembleias e índice de diversidade de Shannon. Foram registradas 132 espécies nas pastagens enquanto que apenas 72 nos canaviais, sendo que tanto a riqueza geral quanto a abundância relativa de alguns grupos de aves foram explicadas pela variação na heterogeneidade da paisagem. Assim, conclui-se que métodos analíticos classicamente utilizados em ecologia podem apresentar falhas na avaliação ecológica de remanescentes de Mata Atlântica inseridos em paisagem antrópica, ocasionando interpretações errôneas. Novos métodos analíticos devem ser explorados, sendo o IIB um possível substituto. A diferença existente entre as assembleias de aves ocorrentes nas pastagens, (maior heterogeneidade) e nos canaviais (baixa heterogeneidade) indicam as consequências negativas que homogeneização da paisagem agrícola pode ocasionar à biodiversidade ocorrente nestas paisagens. / Because human-modified landscapes (HML) are dynamic and have structural complexity, continuous research is necessary to improve knowledge about the HML impacts on the biodiversity, as well as to provide knowledge of which current species may reflect the environmental conditions existing there. Thus, considering birds as sample of the HML existing biodiversity, the following thesis aimed to: 1) describe the bird assemblages of Atlantic Forest patches located in HML and bird assemblages of the interior of cattle pastures and sugar cane crops, 2) identify a proper bird analytical approach to assess the existing ecological integrity of forest patches in HML, 3) assess the effects of the landscape features (dynamic and structure) on the bird assemblages of forest patches in HML, 4) identify which landscapes features of both crops may exert influence on the bird assemblage composition of each crop. Bird sampling was performed monthly along one year (Nov 2011 - Nov 2012) in eight forest patches with different historical and size (3 - 115 ha), and eight sites located in the interior of each crop (four in cattle pasture and four in sugar cane), using point counts and transects. Five focal landscapes (16 km2) located in a typical HML of São Paulo state (Corumbataí river basin) were used to select these sampling sites. The rank of ecosystem services provisioning of Ferraz et al. (2014) was used as a measurement of the existing gradient of human disturbance in the forest patches, which was built through information about forest dynamic and structure. The landscape features of each crop were collected through two scale of analysis (circular buffers with 600 and 1000 radius meters) taking into account metrics that may represent the landscape heterogeneity. 191 species were observed in the forest patches while 137 in the crops. The forest birds, non-forest birds, birds with forest-non-forest habits, small understory-midstory insectivorous, species with foraging habits in the midstory strata, threatened and endemic species, were the best ecological indicators of the forest patches. These bird groups were used as database in the development of the Index of Biotic Integrity (IBI), a multimetric approach, which showed a better performance to indicate the existent integrity in the forest patches in comparison with \"sensitivity to disturbance\" of Parker III et al. (1996), total species richness and Shannon´s diversity index. 132 species were observed in cattle pastures while 72 in sugar cane. Both richness and relative abundance of some bird groups were explained by the landscape heterogeneity variation. Thus, it is possible to conclude that some classical birds analytical approaches may be flawed in the ecological assessment of Atlantic Forest patches inserted in HML. New analytical approaches should be explored, and the IBI is a possible alternative. The bird\'s assemblage differences between cattle pastures (high heterogeneity) and sugar cane (low heterogeneity) are an example of the negative consequences caused by the crops homogenization on the living biodiversity of agricultural landscapes.

Diffusive shock acceleration operating at expanding supernova remnant shells is by far the most popular model for the origin of galactic cosmic rays. Despite the general consensus received by the model, an unambiguous and conclusive proof of the supernova remnant hypothesis is still missing. In this context, the recent developments in gamma ray astronomy provide us with precious insights into the problem of the origin of galactic cosmic rays, since production of gamma rays is expected both during the acceleration of cosmic rays at supernova remnant shocks and during their subsequent propagation in the interstellar medium. In particular, the recent detection of a number of supernova remnants at TeV energies nicely fits with the model, but it still does not constitute a conclusive proof of it, mainly due to the difficulty of disentangling the hadronic and leptonic contributions to the observed gamma ray emission. The main goal of my research is to search for an unambiguous and conclusive observational test for proving (or disproving) the idea that supernova remnants are the sources of galactic cosmic rays with energies up to (at least) the cosmic ray knee. Our present comprehension of the mechanisms of particle acceleration at shocks and of the propagation of cosmic rays in turbulent magnetic fields encourages beliefs that such a conclusive test might come from future observations of supernova remnants and of the Galaxy in the almost unexplored domain of multi-TeV gamma rays.