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61.
Jean-Marc Pétillon Olivier Bignon Pierre Bodu Pierre Cattelain Grégory Debout Mathieu Langlais Véronique Laroulandie Hugues Plisson Boris Valentin 《Journal of archaeological science》2011
The technology of the European Upper Palaeolithic yielded abundant evidence of the use of composite projectile heads, in the form of osseous points on the side of which one or several (micro)lithic elements are attached. Yet, little experimental work has been devoted to testing and assessing the parameters of use of this type of composite tips. In this paper we present a pilot experiment with replicas of Magdalenian composite spear tips, made of an antler point with one or two rows of flint backed bladelets. Two series of replicas were manufactured after the lithic and osseous record of, respectively, the Lower Magdalenian from southwest France (c. 20–18 Ky cal BP) and the Upper Magdalenian of Pincevent in the Paris Basin (c. 15–14 Ky cal BP). The 34 experimental composite heads were hafted to spears that were then shot with a spearthrower at the carcasses of two young deer. The results provide some insight into the performance characteristics of the osseous and lithic components, both in efficiency and durability. Finally, possible improvements of the experimental protocol are discussed, as well as the implications of our results for the understanding of projectile point variability in the Upper Palaeolithic. 相似文献
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ABSTRACT This original study examines the potential of a spatiotemporal autoregressive Local (LSTAR) approach in modeling transaction prices for the housing market in inner Paris. We use a data set from the Paris Region notary office (Chambre des notaires d’Île‐de‐France) which consists of approximately 250,000 transactions units between the first quarter of 1990 and the end of 2005. We use the exact X–Y coordinates and transaction date to spatially and temporally sort each transaction. We first choose to use the STAR approach proposed by Pace et al., 1998 . This method incorporates a spatiotemporal filtering process into the conventional hedonic function and attempts to correct for spatial and temporal correlative effects. We find significant estimates of spatial dependence effects. Moreover, using an original methodology, we find evidence of a strong presence of both spatial and temporal heterogeneity in the model. It suggests that spatial and temporal drifts in households socio‐economic profiles and local housing market structure effects are certainly major determinants of the price level for the Paris Housing Market. 相似文献
63.
Pierre Bauduin 《Early Medieval Europe》2021,29(3):394-416
In his Gesta Normannorum Ducum, William of Jumièges related that the Danish king Swein Forkbeard, at the outset of his conquest of England, came to Rouen and met Richard II. Both leaders negotiated a peace agreement that authorized the Danes to sell their booty in Normandy and provided them with assistance and security. This article examines the circumstances and the clauses of the agreement and its place in the narrative of the Gesta. The author linked the circumstances of the agreement to the St Brice’s Day massacre, which provided him with the opportunity to present a very negative portrait of King Æthelred II. While one should be very careful about the author's claims and chronology, a comparison with other similar agreements renders the terms of the treaty, as related by William, plausible. 相似文献
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Pierre‐Louis Têtu 《The Canadian geographer》2019,63(2):225-239
The melting of summer sea ice in the Canadian Arctic allows for better accessibility and therefore increased development of marine tourism. This paper highlights a significant increase in cruise ships and pleasure craft in the Canadian Arctic Archipelago since the 1990s, especially in the strategic areas of the Lancaster Sound and southeast of Baffin Island. Based on spatial analysis, cruise ships and pleasure craft were mostly sailing inside the primary corridors and outside the secondary corridors; this is particularly obvious for the fourth secondary corridor of the western Arctic. Moreover, marine tourism activity related to cruise ships or pleasure craft occurred within a distance of 15 nautical miles and beyond the outer limit of a corridor, whether primary or secondary. The Northern Marine Transportation Corridors Initiative is an important tool to manage marine traffic in the Canadian Arctic and we need to continue to encourage its development through a multipartite approach and taking traditional Inuit knowledge into account. 相似文献
67.
Salvador Domínguez-Bella Serge Cassen Pierre Pétrequin Antonín Přichystal Javier Martínez José Ramos Nieves Medina 《Archaeological and Anthropological Sciences》2016,8(1):205-222
The discovery of a Neolithic Alpine jade axehead in Aroche, in the southwest of Spain, revives the question of long-distance exchange between the Iberian Peninsula and the rest of Europe. This polished blade belongs to a typological model quite characteristic of Alpine production during the second half of the 5th millennium B.C. Different mineralogical approaches (macroscopic features examination, specific gravity, direct XRD, non-destructive μXRF spectroscopy, optical stereomicroscopy, magnetic susceptibility determination and microprobe analysis) have identified the rock as an omphacitic jadeitite (mixed jade) with some tiny garnets and a weak retromorphosis. This analysis and the comparison of the rock structure with the referential JADE of Alpine natural jade samples, as well as the extraction modalities and shaping of the axe, provide strong arguments to assign the Aroche axe to a production of Mont Viso: the origin of thousands of axes that circulated in Europe between Ireland and Sicily. The Aroche axe, discovered not far from the variscite mines of Encinasola, could be considered as part of a possible exchange system between the Iberian Peninsula and the Gulf of Morbihan, in Brittany. 相似文献
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Emma St Pierre Jian-xin Zhao Yue-xing FengElizabeth Reed 《Journal of archaeological science》2012,39(4):922-930
This study aimed to further test the method, reported by St Pierre et al. (2009), to develop robust chronologies of deposits in limestone caves through U/Th (Uranium/Thorium or U-Series) dating of soda straw stalactites. The chronology of fossil bearing deposits at Blanche Cave was further constrained with thermal ionisation mass spectrometry (TIMS) U/Th dating of 17 additional soda straw stalactite samples, and results were compared to recalibrated 14C ages of charcoal. The results support the assertion that soda straw stalactites can provide ages close to the time of sediment deposition and may be used as reliable chronological markers, particularly for periods reaching or beyond the radiocarbon dating limit. The application of an enhanced cleaning technique facilitated the reduction of detrital Th in samples, significantly increasing age accuracy and precision. Additionally U/Th age accuracy and precision was increased through the application of site-specific measured U/Th ratios to correct for the detrital 230Th component in samples. 相似文献
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