1,720,956 research outputs found
Arqueologia e geociências: análise diacrônica da gestão da matéria-prima no espaço préhistórico da região de Diamantina, Minas Gerais, Brasil
Full text linkTese de Doutoramento em Quaternário, Materiais e CulturaO tema desta tese se direciona ao estudo das populações pré-históricas que ocuparam a região de Diamantina, estado de Minas Gerais, Brasil, em horizontes cronológicos estabelecidos como Antigo (Pleistoceno/Holoceno Inferior) e Recente (Holoceno Superior). Baseado em horizontes de ocupações separados por um hiato temporal mínimo de 6.000 anos, este estudo propôs-se a analisar diacronicamente a gestão das matérias-primas líticas em três sítios arqueológicos desta região, considerando sua interface com elementos específicos reconhecidos no espaço, com o intuito de alcançar a percepção sobre a interação destas populações diacrônicas com a paisagem, suas percepções sobre as matérias-primas, alterações potenciais de utilização refletidas nas indústrias líticas e suas significações. Para tanto, empregamos nos trabalhos de campo e gabinete um referencial teórico-metodológico articulado, procedente de estudos de tecnologia lítica, e de processos interdisciplinares que relacionam a Arqueologia e algumas especialidades das Geociências em dois de seus principais segmentos: a Arqueologia da Paisagem e a Geoarqueologia. A análise diacrônica da gestão das principais matériasprimas, o quartzo hialino e o quartzito, assim como das demais matérias-primas registradas nos sítios arqueológicos em interface com a paisagem e os territórios - compreendidos a partir da caracterização do espaço - evidenciaram elementos semelhantes e dissemelhantes, os quais originaram interpretações direcionadas a gestão destas matériasprimas, as cadeias operatórias e a organização tecnológica, e, a função dos sítios arqueológicos. Para além, os resultados permitiram, oportunamente, aprimorar a compreensão de elementos potenciais na paisagem que possivelmente contribuíram para a escolha do local de implantação dos sítios em estudo, bem como, da possível predileção das ocupações pré-históricas na Formação geológica Galho do Miguel. Por fim, ao explorar as relações entre os sítios arqueológicos em estudo, suas indústrias líticas e o espaço em que se inserem, encontramos resultados que proporcionaram a ampliação do conhecimento sobre as populações que ocuparam os horizontes Antigo e Recente na região de Diamantina, contribuindo para a construção do conhecimento sobre a pré-história da Serra do Espinhaço.The present thesis focused on the study of the prehistoric populations that occupied the region of Diamantina, state of Minas Gerais, Brazil, in chronological horizons established as Old (Pleistocene / Lower Holocene) and Recent (Upper Holocene). Based on horizons of occupations separated by a minimum time gap of 6.000 years, this study proposed to analyze diachronically the management of the lithic material in three archeological sites of this region, regarding its interface with specific elements recognized in the area, in order to advance in the comprehension of the interaction of these diachronic populations with the landscape and their perceptions about raw materials, and to identify potential changes reflected in the lithic industries and their meanings. To this purpose, we use a theoreticalmethodological framework derived from lithic technology studies, and from interdisciplinary processes that relate Archeology and some specialties of Geosciences in two of its main segments: Landscape Archeology and Geoarchaeology. Research findings of the diachronic analysis of the management of the main raw materials, hyaline quartz and quartzite, as well as of the other raw materials observed in the archaeological sites in interface with the landscape and the territories - understood from the characterization of the space – pointed out similar and dissimilar elements in the comparison of the horizons analyzed, which gave rise to interpretations of the management of the raw materials, of the operative chains and technological organization, and of the function of the archaeological sites. In addition, the results allowed, opportunely, to improve the understanding of potential elements in the landscape that could have contributed to the choice of the sites analyzed, as well as the possible predilection of the prehistoric occupations in the geological formation Galho do Miguel. Finally, in exploring the relationships between the archaeological sites, their lithic industries and the space in which they are located, we provided contributions to the knowledge on the populations that occupied the Old and Recent horizons in the region of Diamantina, and to the development of knowledge about the prehistory of Serra do Espinhaço
Among the rocks: the later prehistoric human occupations and the rock art of Diamantina, Minas Gerais
No full textA região de Diamantina, em Minas Gerais, guarda um amplo acervo de grafismos rupestres e ricos conjuntos artefatuais e estruturas atribuíveis aos últimos 1.500 anos de ocupação humana. Esta pesquisa investiga os dois conjuntos de registros arqueológicos: o horizonte recente e as pinturas rupestres. Numa análise que procura congregar estudos intra e intersítios, os dois conjuntos são explorados, em busca de identificar sistemas de ocupação e construção da paisagem. Nas ocupações recentes, vêem-se coleções líticas bastante variadas, em sítios de atributos diferentes, que se pretende conectar por meio do emprego das noções de organização tecnológica e cadeia operatória. No que tange aos grafismos rupestres, esta pesquisa investe na identificação de estilos e no reconhecimento das relações cronológicas entre esses. São analisadas também as formas de interação diacrônica entre figuras e as formas de sua composição gráfica.The region of Diamantina, in Minas Gerais, has a large rock paintings assemblage and rich artefactual assemblages, and structures from the last 1.500 years of human occupation. This research explores the both archaeological features: the occupations of the later pre-colonial period and the rock art. Trying to put together intra and inter-site studies, we intent to identify systems of landscape building. In the later human occupation, there are many lithic artifacts, in different kinds of sites, that are studied here with the use of two basic concepts: technological organization and chaine operatoir. The rock art is explored through stylistic and chronological approaches. We also explore the ways of diachronical interactions and graphic construction among the paintings
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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