38 research outputs found
Pollen from Late Pleistocene hyena (Crocuta crocuta spelaea) coprolites:an interdisciplinary approach from two Italian sites
No full textPalynology of fossil faeces is still extremely rare and its contribution to the interpretation of the environment undervalued. In this paper we present the results of pollen analysis performed on cave hyena coprolites [Crocuta crocuta spelaea (Goldfuss, 1832)] from Marine Isotope Stage 3 (MIS 3) sites of Cava Muracci (Cisterna di Latina, central Italy) and Tana delle Iene (Ceglie Messapica, southern Italy). This study provides new insights into the vegetation of the Late Pleistocene of peninsular Italy, until now known only through long pollen records. It also shows how the content of coprolites, combined with faunal data and geochronological investigations, can represent a potential integrative source of palaeoclimatic proxy data. Our results indicate that the surroundings of both of the hyena dens were characterised by a patchy landscape with open lowlands dominated by steppe and grassland vegetation, while a few mesophilous and thermophilous trees were present in more humid areas, probably along the marine coast and inland. The harsh glacial climate appears to have been milder at Cava Muracci than at Tana delle Iene. This could be due either to the different environmental features of the two sites or to the high climatic variability that occurred during MIS3
Model Order Reduction Methods for Topology Optimization
No full textTopology optimization is a branch of mechanical engineering in which the topology of a structure is created and optimized to certain conditions and restrictions. In the last few decades, the demand for highly accurate and complex models of these structures has increased and it has a big effect on the computational power needed. To ease the computational load for the dynamical systems one can use model order reduction methods to reduce the size of the models.Classic Arnoldi is a widely used method for model order reduction (MOR) with topology optimization. In this thesis, we discuss two-sided Arnoldi and IRKA to help find a suitable moment-matching MOR method for topology optimization. These two reduction methods are implemented and improved to create a high fidelity reduced model. For improvements in the accuracy, the use of orthogonalization methods is analysed and discussed as well as including rigid body modes for IRKA and a preconditioner for two-sided Arnoldi. Lastly, a participation factor is discussed and improved to help reduce the model created with two-sided Arnoldi.In the end, we find that two-sided Arnoldi in combination with the participation factor performs better than IRKA by creating a smaller and more accurate reduced model.Applied Mathematic
Advance in the mapping of the 1717 AD Triolet rock avalanche deposit (Mont Blanc massif, Italy) using cosmogenic exposure dating
No full textInternational audienceThe granitic deposit of the upper Val Ferret was shown in 1980 to result from a large September 1717 rock avalanche. A huge volume of rock and ice travelled onto the Triolet Glacier>7 km downvalley. Boulder accumulations and irregular ridges spread out over a distance of 2 km on the valley floor terminate with an arcuate front. A 2009 reconstruction with radiocarbon dating proposed a smaller lateral extension of the landslide on the valley floor preserving Lateglacial moraines, but cosmogenic exposure dating questions it. Consistency of 10Be dates suggests that the deposit results from the 1717 rock avalanche, with a rock volume>10×106 m3, and a likely similar ice volume. The importance of rock avalanches has to be emphasised to help to prevent risk in inhabitated valleys. Even for the recent period, the contribution of cosmogenic exposure dating to geomorphological analysis of complex landform assemblages is valuable
Advance in the mapping of the 1717 AD Triolet rock avalanche deposit (Mont Blanc massif, Italy) using cosmogenic exposure dating
No full textInternational audienceThe granitic deposit of the upper Val Ferret was shown in 1980 to result from a large September 1717 rock avalanche. A huge volume of rock and ice travelled onto the Triolet Glacier>7 km downvalley. Boulder accumulations and irregular ridges spread out over a distance of 2 km on the valley floor terminate with an arcuate front. A 2009 reconstruction with radiocarbon dating proposed a smaller lateral extension of the landslide on the valley floor preserving Lateglacial moraines, but cosmogenic exposure dating questions it. Consistency of 10Be dates suggests that the deposit results from the 1717 rock avalanche, with a rock volume>10×106 m3, and a likely similar ice volume. The importance of rock avalanches has to be emphasised to help to prevent risk in inhabitated valleys. Even for the recent period, the contribution of cosmogenic exposure dating to geomorphological analysis of complex landform assemblages is valuable
Two new Later Stone Age sites from the Final Pleistocene in the Falémé Valley, eastern Senegal
No full text The understanding of cultural dynamics at work at the end of the Final Pleistocene in West Africa suffers from a significant lack of excavated and dated sites, particularly in the Sahelian and Sudanian ecozones. While the Later Stone Age shows varied behavioral developments in different parts of the continent, the chrono-cultural framework of this period remains largely unknown in West Africa. We report on archaeological, geomorphological, and chronological research on two Final Pleistocene Later Stone Age sites in the Falémé Valley, eastern Senegal. Optically stimulated luminescence ages place the site of Toumboura I-2017 between 17 ± 1 and 16 ± 1 ka and the Ravin de Sansandé site between 13 ± 1 ka and 12 ± 1.1 ka. The excavated lithics show typical Later Stone Age industries, characterized by chaînes opératoires of core reduction mainly producing flakes and bladelets as well as blades and laminar flakes. Segments dominate the toolkits but a few backed bladelets and end-scrapers on flake blanks were recognized. Local raw materials were used, with a preference for chert and quartz, as well as greywacke. These Later Stone Age lithic assemblages are the oldest known in Senegal so far and add to the small number of sites known in West Africa for this period, which are mainly located farther south, in sub-tropical ecozones. The Later Stone Age sites of the Falémé Valley are contemporaneous with typical Middle Stone Age technologies in Senegal dated to at least the Pleistocene/Holocene transition. Our results thus provide new archaeological evidence highlighting the complex cultural processes at work during the Final Pleistocene in West Africa. </p
Translatorska recepcja powieści Pawła Sanajewa Pochowajcie mnie pod podłogą
No full textIrina Jermaszowa
Uniwersytet Adama Mickiewicza, Poznań, Poland
[email protected]
ПЕРЕВОДЧЕСКАЯ РЕЦЕПЦИЯ ПОВЕСТИ ПАВЛА САНАЕВА ПОХОРОНИТЕ МЕНЯ ПОД ПЛИНТУСОМ
Резюме
Предметом моих исследований стал польский перевод известной в России книги Павла Санаева Похороните меня за плинтусом. Название польской версии - Pochowajcie mnie pod podłogą. Феномен популярности произведения и ее автора объясняется не только художественной стороной, но скандальной. Сюжет частично построен на автобиографии писателя, который родом из известной актерской семьи. Описанная история удостоилась экранизации и нескольких театральных постановок, а также перевода на иностранные языки, в том числе - польский. В статье представляю результаты сравнительного анализа (оригинала и перевода) и рецепцию произведения в Польше.
THE TRANSLATION RECEPTION OF PAVEL SANAEV’S BURy ME BEHIND THE BASEBOARD
Summary
The Polish translation of a popular in Russia book Bury me under a Plinth (in Polish ver-sion: Pochowajcie mnie pod podłogą) by Pavel Sanajev was the main area of my research. The phenomenon of the popularity of this work and its author results not only from the artistic but also scandalous side of the book. The plot is partially based on the autobiogra-phy of the writer who grew up in the well known family of actors. The story described in the book has been successfully adapted by numerous film and theatre directors. Besides, it has been translated into many languages, including Polish. The article presents the results of a comparative anaysis (Russian version vs Polish translation) and the reception of the work in Polan
Summary of stratigraphic sections from the Toumboura, TMBI-2017 and Ravin de Sansandé sites.
No full textSummary of stratigraphic sections from the Toumboura, TMBI-2017 and Ravin de Sansandé sites.</p
Composition of the Late Stone Age lithic assemblage at Toumboura I-2017.
No full textComposition of the Late Stone Age lithic assemblage at Toumboura I-2017.</p
Flakes at the Ravin of Sansandé site.
No full text(1,3) flakes, chert. (2,4) Débordant flakes, greywacke.</p
Schematics of the different interventions, stratigraphic units and OSL samples at the Ravin de Sansandé site.
No full textSchematics of the different interventions, stratigraphic units and OSL samples at the Ravin de Sansandé site.</p
