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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Archaeometric Characterization of Roman Tile Fabrics from the Sangro Valley, Italy

Goldberg, Eli Aaron 25 May 2012 (has links)
No description available.
42

Římská stavební terakota v oblasti mezi Vindobonou a Brigetiem a v sousedních nadlimitních oblastech / Roman building terracottas between Vindobona and Brigetio and along Danubian Limes (1.-4. Century AD)

Janek, Tomáš January 2014 (has links)
This work deals with roman building terracotas in the area between Vindobona and Brigetio and along Danubian Limes. The first part describes manufacturing of roman bricks, inscriptions, marks and stamps which are used on them. Second part summarizes finds of roman bricks alongside roman buildings on limes romanus. In the third part is considered metodology of research, also there is a focus on Petrological analyses and support of computer software. In this section are tested new ways of comparing of brickstamps with the help of morphometry and accurate measuerment of the stamps. Last part focuses on production and distribution of building material mainly trough river roads. In the end I calculated needed ammount of building material along with the time of production and the time of transportation to the roman forts.
43

Estudo comparativo dos algoritmos hierárquicos de análise de agrupamentos em resultados experimentais / Comparative study of hierarchical algorithms of cluster analysis in experimental results

Carvalho, Priscilla Ramos 11 September 2018 (has links)
Objetivou-se, com este trabalho, estudar os métodos hierárquicos de análise de agrupamentos (ligação simples, ligação completa, ligação média, centróide e de Ward com base nas distâncias Euclidiana, Euclidiana ao quadrado, Manhattan e Mahalanobis), de modo a identificar qual é o mais adequado para uma base de dados arqueológicos. Utilizou-se uma base de dados fornecida pelo Grupo de Estudos Arqueométricos do IPEN CNEN/SP, na qual foram analisadas 146 amostras de fragmentos cerâmicos de três sítios arqueológicos por análise por ativação com nêutrons instrumental, sendo determinadas as frações de massa de 24 elementos químicos: As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb e Zn. Para a determinação do melhor método, foram avaliados os dendrogramas conjuntamente com o valor dos coeficientes de correlação cofenética (CCC), obtidos para cada método. O método da ligação média mostrou-se mais coerente na formação dos agrupamentos, apresentando também os maiores valores do CCC. Por último, um script com funções do programa estatístico R foi desenvolvido para calcular o CCC, com o intuito de auxiliar os pesquisadores a encontrar o método de agrupamento mais apropriado para sua base de dados. / The objective of this work was to study the hierarchical methods of cluster analysis (single linkage, complete linkage, average linkage, centroid and Ward with base in the Euclidean distance, Squared Euclidean distance, Manhattan and Mahalanobis) to identify which is the most appropriate in archaeological data set. It was used a data set provided by the Archaeometry Studies Group from IPEN CNEN/SP in which 146 samples of ceramic fragments from three archaeological sites analyzed by instrumental neutron activation analysis, being determined the mass fractions of 24 chemical elements: As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn. For the determination of the best method, it was evaluated the dendrograms together with value of the cophenetic correlation coefficient (CCC) obtained for each method. The average linkage method was more coherent in formation of the clusters, and with higher CCC values. Finally, a script with functions of the R statistical software was developed to calculate the CCC with aim to be a tool for researchers find the most appropriate method of cluster analysis for their data set.
44

Caracterização físico-química de sedimentos do sítio arqueológico Lapa Grande de Taquaraçu, MG / Physical-chemical characterization of sediments from Lapa Grande de Taquaraçu archaeological site, MG

Tudela, Diego Renan Giglioti 02 August 2013 (has links)
Neste projeto foram determinadas as concentrações elementares de Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sc, Sm, Ta, Tb, Th, U, Yb e Zn por meio da análise por ativação com nêutrons instrumental (INAA) em 60 amostras de sedimento do sítio arqueológico Lapa Grande de Taquaraçu, localizado no Estado de Minas Gerais. As amostras foram cedidas pelo Prof. Dr. Astolfo Gomes de Mello Araujo do Museu de Arqueologia e Etnologia da USP (MAE-USP). Este sítio é um abrigo paleoíndio rochoso localizado próximo ao carste de Lagoa Santa, com características que poderiam ser usadas para testar o modelo de abandono do carste durante o Holoceno Médio relacionado ao aumento da seca. Os resultados das concentrações elementares, interpretados por métodos estatísticos multivariados, mostraram a formação de três grupos composicionais distintos e bem definidos. Foi realizado, também, o estudo de seleção de variáveis por meio da análise de Procrustes. Com o propósito de estudar a composição mineralógica, foram selecionadas 8 amostras, as quais foram analisadas por difração de raios X. Os resultados indicaram que há distinção na estrutura cristalina entre as amostras dos três grupos composicionais, sendo quartzo, calcita, dolomita e mica as principais fases cristalinas. / In this project the elemental concentrations of Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn were determined by instrumental neutron activation analysis (INAA) in 60 sediment samples from Lapa Grande de Taquaraçu archaeological site, located in MG State. The samples were provided by Dr. Astolfo Gomes de Mello Araujo from the Museum of Archaeology and Ethnology, University of São Paulo. This site is a palaeoindian rockshelter located near Lagoa Santa karst with characteristics which could be used to test karst abandonment model during the Middle Holocene related to dry conditions. The results of elemental concentrations, interpreted by multivariate statistical analysis, showed the formation of three different compositional and well-defined groups. The variable selection study by means of Procrusts analysis was also carried out. X-ray diffraction (XRD) analyses were also performed in 8 samples to study their mineralogical composition and they showed that there are distinctions in crystalline structure between the samples of the three elemental compositional groups, being quartz, calcite, dolomite and mica the main crystalline phases present in the samples.
45

Caracterização físico-química de sedimentos do sítio arqueológico Lapa Grande de Taquaraçu, MG / Physical-chemical characterization of sediments from Lapa Grande de Taquaraçu archaeological site, MG

Diego Renan Giglioti Tudela 02 August 2013 (has links)
Neste projeto foram determinadas as concentrações elementares de Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sc, Sm, Ta, Tb, Th, U, Yb e Zn por meio da análise por ativação com nêutrons instrumental (INAA) em 60 amostras de sedimento do sítio arqueológico Lapa Grande de Taquaraçu, localizado no Estado de Minas Gerais. As amostras foram cedidas pelo Prof. Dr. Astolfo Gomes de Mello Araujo do Museu de Arqueologia e Etnologia da USP (MAE-USP). Este sítio é um abrigo paleoíndio rochoso localizado próximo ao carste de Lagoa Santa, com características que poderiam ser usadas para testar o modelo de abandono do carste durante o Holoceno Médio relacionado ao aumento da seca. Os resultados das concentrações elementares, interpretados por métodos estatísticos multivariados, mostraram a formação de três grupos composicionais distintos e bem definidos. Foi realizado, também, o estudo de seleção de variáveis por meio da análise de Procrustes. Com o propósito de estudar a composição mineralógica, foram selecionadas 8 amostras, as quais foram analisadas por difração de raios X. Os resultados indicaram que há distinção na estrutura cristalina entre as amostras dos três grupos composicionais, sendo quartzo, calcita, dolomita e mica as principais fases cristalinas. / In this project the elemental concentrations of Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn were determined by instrumental neutron activation analysis (INAA) in 60 sediment samples from Lapa Grande de Taquaraçu archaeological site, located in MG State. The samples were provided by Dr. Astolfo Gomes de Mello Araujo from the Museum of Archaeology and Ethnology, University of São Paulo. This site is a palaeoindian rockshelter located near Lagoa Santa karst with characteristics which could be used to test karst abandonment model during the Middle Holocene related to dry conditions. The results of elemental concentrations, interpreted by multivariate statistical analysis, showed the formation of three different compositional and well-defined groups. The variable selection study by means of Procrusts analysis was also carried out. X-ray diffraction (XRD) analyses were also performed in 8 samples to study their mineralogical composition and they showed that there are distinctions in crystalline structure between the samples of the three elemental compositional groups, being quartz, calcite, dolomite and mica the main crystalline phases present in the samples.
46

Estudo comparativo dos algoritmos hierárquicos de análise de agrupamentos em resultados experimentais / Comparative study of hierarchical algorithms of cluster analysis in experimental results

Priscilla Ramos Carvalho 11 September 2018 (has links)
Objetivou-se, com este trabalho, estudar os métodos hierárquicos de análise de agrupamentos (ligação simples, ligação completa, ligação média, centróide e de Ward com base nas distâncias Euclidiana, Euclidiana ao quadrado, Manhattan e Mahalanobis), de modo a identificar qual é o mais adequado para uma base de dados arqueológicos. Utilizou-se uma base de dados fornecida pelo Grupo de Estudos Arqueométricos do IPEN CNEN/SP, na qual foram analisadas 146 amostras de fragmentos cerâmicos de três sítios arqueológicos por análise por ativação com nêutrons instrumental, sendo determinadas as frações de massa de 24 elementos químicos: As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb e Zn. Para a determinação do melhor método, foram avaliados os dendrogramas conjuntamente com o valor dos coeficientes de correlação cofenética (CCC), obtidos para cada método. O método da ligação média mostrou-se mais coerente na formação dos agrupamentos, apresentando também os maiores valores do CCC. Por último, um script com funções do programa estatístico R foi desenvolvido para calcular o CCC, com o intuito de auxiliar os pesquisadores a encontrar o método de agrupamento mais apropriado para sua base de dados. / The objective of this work was to study the hierarchical methods of cluster analysis (single linkage, complete linkage, average linkage, centroid and Ward with base in the Euclidean distance, Squared Euclidean distance, Manhattan and Mahalanobis) to identify which is the most appropriate in archaeological data set. It was used a data set provided by the Archaeometry Studies Group from IPEN CNEN/SP in which 146 samples of ceramic fragments from three archaeological sites analyzed by instrumental neutron activation analysis, being determined the mass fractions of 24 chemical elements: As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn. For the determination of the best method, it was evaluated the dendrograms together with value of the cophenetic correlation coefficient (CCC) obtained for each method. The average linkage method was more coherent in formation of the clusters, and with higher CCC values. Finally, a script with functions of the R statistical software was developed to calculate the CCC with aim to be a tool for researchers find the most appropriate method of cluster analysis for their data set.
47

A GIS-based analysis of hillfort location and morphology

Murray, Jessica January 2016 (has links)
Moving away from the highly regionalised and constrained purely humanistic and empirical studies of hillfort location and morphology, this study is a multi-regional GIS-based analysis of the form and siting of several groups of hillforts across Britain. Hillforts in Dartmoor, Aberdeenshire, The Gower and Warminster are assessed, four regions that are topographically diverse. The highly varied topography of these regions also tests the GIS-basis of this study, another important intrinsic aspect of this novel research. GIS-based analysis has never before been applied to a study of hillfort location and morphology to this degree and, as with any innovative methodology its worth has to be tested and assessed. The thesis demonstrates that GIS-based analysis, when combined with field visits, provides a fundamental insight into the possible influences of hillfort location and morphology, which fieldwork alone will never be able to do. The GIS-based analysis developed here focuses largely upon examining degrees of movement and visibility. Unlike other GIS-based analyses of movement and visibility this integrates the two to examine visual pathways across landscapes to further investigate the visual qualities of hillforts within the various test areas. The study demonstrates that GIS-based analysis when combined with fieldwork can be affectively applied to qualitative based questions surrounding hillfort location and morphology. The overall results of this analysis had some relatively predictable results whilst there were some very surprising cases. A large number of entrances were placed within the most accessible area, however in the case of Battlesbury there was evidence for the complete disregard to accessibility within the orientation of its northwestern entrance. There were also numerous examples of the placement of a site's most prominent morphological components in correlation with the blind pathways. In these cases sites were orientated to encourage an element of surprise upon the approaching travellers.
48

Production et circulation du Fer en Lorraine (VIe siècle avant J-C - XVe siècle ap. J-C) / Production and Circulation of Iron in Lorraine (6th c. BC – 15th c. AD)

Disser, Alexandre 06 November 2014 (has links)
L’espace lorrain a connu, au cours des XIXe et XXe s., une intense activité sidérurgique reposant sur la réduction d’un minerai sédimentaire, la Minette lorraine. Paradoxalement, on a longtemps considéré qu’aucune activité de production liée à l’exploitation de ce minerai n’avait pris place dans cette région avant l’époque contemporaine. Un programme de recherche initié il y a 25 ans a par ailleurs totalement renouvelé la perception de l’histoire sidérurgique de cet espace. Les activités de production s’y sont déroulées de manière sporadique dès les âges du Fer, avant de prendre de l’ampleur au cours de la période médiévale. Les recherches menées permettent une première appréhension de l’évolution des modes de production du fer en Lorraine à différentes époques, mises en perspective dans leur contexte européen. Toutefois, les modalités de distribution du métal produit restent largement méconnues, du fait de l’indigence relative des sources historiques à cet égard. Une première perception des circuits de distribution du fer se développant au sein de l’espace lorrain est exposée dans ce mémoire, contribuant à l’appréhension des usages du fer à différentes époques.Une méthodologie développée récemment par le Laboratoire Métallurgies et Cultures et le Laboratoire Archéomatériaux et Prévision de l’Altération, reposant sur la caractérisation chimique des déchets associés à la réduction du minerai et des inclusions présentes dans les produits sidérurgiques, a été employée dans ce but. Ce travail interdisciplinaire propose par ailleurs de nouveaux développements en termes de traitement statistique multivarié de l’information chimique, contribuant ainsi à répondre aux problématiques développées.Un référentiel géochimique, constitué d’une base de données préexistante et d’informations nouvelles acquises à l’occasion de prospections archéologiques, offre une perception nouvelle de la diversité chimique caractérisant les activités sidérurgiques anciennes au sein de l’espace lorrain et de ses marges. Des ensembles géochimiques de production ont ainsi été mis en évidence. Plusieurs contextes de consommation ont ensuite été considérés, offrant un éclairage sur les circuits de distribution du fer aux époques anciennes en Lorraine. Une démarche statistique, reposant sur l’emploi d’analyses descriptives et de modèles prédictifs, a été appliquée en ce sens, après avoir été éprouvée par l’étude d’ateliers sidérurgiques pour lesquels l’utilisation d’un minerai en particulier est assurée par le contexte archéologique.Les résultats obtenus permettent de préciser, parfois à l’encontre des hypothèses formulées au préalable, les pratiques d’échange du fer à différentes époques, en regard de nos connaissances quant aux modes de production sidérurgiques. Des discussions portant sur le rôle joué par le travail du fer au sein des sociétés anciennes sont initiées à la lumière des informations nouvellement acquises. / Lorraine was, during the 19th and 20th c., one of the most important ironmaking areas worldwide, relying on the use of a sedimentary ore, the Minette lorraine. Paradoxically, it has long been thought that no iron was produced using this ore before the modern era. A research program initiated 25 years ago totally renewed our perception of its metallurgical history. Production activities were indeed sporadically performed since the Iron Age, before drastically increasing during medieval times. Research performed allows a first apprehension of the ironmaking activities’ forms in Lorraine and their evolution through successive periods, put into perspective in the European context. Iron trade and circulation remain however largely unknown, due to the lack of historical sources. A first insight of the trade networks relative to iron products extending throughout Lorraine and its fringes is exposed in this thesis, contributing to the perception of the use of iron in different periods.A methodology recently developed by the Laboratoire Métallurgies et Cultures and Laboratoire Archéomatériaux et Prévision de l’Altération, relying on the chemical characterization of smelting slags and slag inclusions entrapped in iron products, was employed to that purpose. This interdisciplinary work also offers new developments in the multivariate statistical treatment of chemical information, and contributes to answering the issues raised at the beginning of this work.A geochemical reference set, comprised of a pre-existing database and new information gathered on archaeological surveys performed during this work, was set up. It provides a new perception of the chemical diversity characterizing iron smelting activities within Lorraine and its fringes. Geochemical production sets were emphasized in doing so. Several iron consumption contexts were then considered, offering the possibility of shedding light on iron spreading networks during ancient times in Lorraine. A statistical approach, relying on the use of both descriptive statistical analyses and predictive modelling, was applied to that purpose. It was beforehand tested by studies performed on workshops for which the use of a given ore is attested by archaeological records.Results allow enlightening, sometimes against formerly formulated hypotheses, the practices in terms of the iron’s trade through different periods, facing our current knowledge about iron production modes. Benefiting from newly gathered information, discussions about the role played by ironworking activities among ancient societies are initiated.
49

L'architecture religieuse en Champagne du Nord aux XIe et XIIe siècles / Religious architecture in northern Champagne of the 11th and 12th centuries

Spencer, Thomas 21 June 2013 (has links)
Les recherches sur l'architecture romane en Champagne du Nord, sauf ponctuellement n'ont pas été renouvelées depuis le début des années 1980. Une étude historiographique permet plusieurs constats aujourd'hui : les historiens de l'art et les archéologues ne se sont pas investis dans l'archéologie de la région en dépit du fait que des techniques plus performantes de datation ont été développées, en particulier, l'archéométrie et l'archéologie du bâti; la région n'a guère encore profité de ces nouvelles méthodes d'observation; le chercheur trouve également à sa disposition des ressources analytiques de l'histoire qui permettent d'aborder son propre sujet avec une meilleure connaissance des multiples conditions qui ont régi la création architectural et artistique de l'époque. Ainsi, on prend conscience du fait que le temps est venu de renouveler le regard sur l'image et sur la chronologie des monuments religieux romans champenois. Cette étude revisite, d'abord, les trois grandes églises romanes des diocèses de Reims et de Châlons : Montier-en-Der, Saint-Étienne de Vignory et Saint-Rémi de Reims dont les dates et le phasage des campagnes de construction sont encore discutées. Ensuite, a été analysé un nombre restreint d'églises-types dont les plans, les élévations et le décor monumental sont caractéristiques pour la région. En y appliquant la plus grande acuité de regard possible, il est possible d'infirmer beaucoup des critères de datation employés encore assez récemment et de formuler de nouvelles conclusions sur divers aspects de ces monuments. / Research of Romanesque architecture in the north of the Champagne region, with very few exceptions, has not been renewed since the early 1980s. In the first part of this current study, the historiography of the subject study reveals that: art historians and archaeologists have not been invested in the archaeology of the region despite the fact that there have been many improvements in the methods of observation and dating, in particular with archaeometry and buildings archaeology; the architecture of the region has therefore not benefitted from these new techniques; there are a great many more resources available today that also analyze the history of the period and permit a greater understanding of the multiple contexts that had an impact on architectural and artistic creation during the 10th, 11th and 12th centuries. As such, one is made aware of the need to renew the general comprehension and chronology of the Romanesque religious monuments in Champagne. In the second part of this current study, the three largest churches of the dioceses of Reims and Châlons are revisited : Montier-en-Der, Saint-Étienne de Vignory and Saint-Remi de Reims of which the dates and phases of construction are still a matter of discussion today. Following this monographic study is an analysis of a selected group of church-types of which the plans, elevations and monumental decoration are characteristic of the region. By applying to all of these churches a greater degree of observation than previously done, it is possible to invalidate a certain number of the criteria formerly used to date these monuments and to suggest new conclusions concerning many aspects of their construction.
50

Development of new analytical techniques for amino acid isotope analysis and their application to palaeodietary reconstruction

McCullagh, James Stephen Oswin January 2007 (has links)
No description available.

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