Fires at Neumark-Nord 2, Germany: An analysis of fire proxies from a Last Interglacial Middle Palaeolithic basin site

Few sites with evidence for fire use are known from the Last Interglacial in Europe. Hearth features are rarely preserved, probably as a result of post-depositional processes. The small postglacial basins (<300?m in diameter) that dominate the sedimentary context of the Eemian record in Europe are high-resolution environmental archives often containing charcoal particles. This case study presents the macroscopic charcoal record of the Neumark-Nord 2 basin, Germany, and the correlation of this record with the distinct find levels of the basin margin that also contain thermally altered archaeological material. Increased charcoal quantities are shown to correspond to phases of hominin presence—a pattern that fits best with recurrent anthropogenic fires within the watershed. This research shows the potential of small basin localities in the reconstruction of local fire histories, where clear archaeological features like hearths are missing.     

We Were Sitting Around the Table…

Alejandro comments on the sense of indeterminacy that pervaded our discussions, notably over what “archaeology” even consists of and over the dilemmas created when the principle of respect for the local community contradicts ethical principles that the archaeologist feels are universal in scale. He tells the story of Carlos Bruch, an early archaeologist in the Catamarca Region, recounting how Bruch portrayed local people and discounted their conceptions of the past, then constructed his own version, contributing to the official version in archaeological discourse. This continues to have ramifications today in the disenfranchisement of local voices in global colonialist projects. Alejandro saw our indeterminancy and quandaries over dilemmas faced by archaeologists as a positive development—a symptom of archaeology changing its pre-theoretical pre-understandings. He emphasizes the importance of local people enacting their own techniques of social memory and their own vocality.     

The Pepper Wreck, an early 17th-century Portuguese Indiaman at the mouth of the Tagus River, Portugal

Found in 1993 of the rocks of the fortress São Julião da Barra, at the mouth of the Tagus River, the SJB2 shipwreck—or Pepper Wreck—was tentatively identified as the Portuguese Indiaman Nossa Senhora dos Mártires , lost at this location on its return voyage from Cochin, in India, on 14 September 1606. Its archaeological excavation disclosed a collection of artefacts from the late 16th and the early 17th centuries and allowed the study of the surviving hull structure. The evidence suggests that the Pepper Wreck was a typical Portuguese Indiaman, similar to those described in Portuguese 16th century ship treatises, with a keel of around 27.7 m and an overall length of nearly 40 m.     

The Cais do Sodré Shipwreck,Lisbon, Portugal

The timber remains of a shipwreck, probably dating to the late‐15th or early‐16th century and found in 1995 at Cais do Sodré, Lisbon, Portugal, during the construction of a subway station, are described and analysed. © 2011 The Authors     

A Preliminary report of recording the Stella 1 Roman River Barge,Italy

The remains of a Roman barge were found in 1981 in the River Stella, Udine, Italy. Its cargo consisted mainly of roof tiles. It was excavated in 1998 and 1999, and detailed recording of the hull, and a second wooden structure, was achieved in 2011. A spread of material upstream of the wreck has been investigated 2012–2015. The barge was originally dated to the first quarter of the 1st century AD by the in situ cargo. This article describes the bottom‐based sewn‐plank hull construction and examines it in the light of local boatbuilding traditions. The second wooden structure is also described, along with recent finds and new dating evidence from the dispersed material. The Stella 1 excavation was part of the Anaxum Project, a wider study of the Stella River's cultural landscape through time.     

The Rio Grande do Norte Astrolabe

The Rio Grande do Norte astrolabe may have been found in Brazilian waters, although its provenance is unclear. It was bought and sold at auction in the Unites States in 2011, and the instrument represents a well-preserved specimen within a small and poorly understood collection of published marine astrolabes. It is signed by Agostinho de Goes Raposo, a member of a line of documented Portuguese astrolabe makers, and dated to 1656. This paper relates the condition, treatment, and ethical situation of the artifact, and hopes to advance our understanding of this class of navigation instruments.     

Ductility-Equivalent Viscous Damping Relationships for Beam-to-Column Partial-Strength Steel Joints

This paper seeks to contribute to the development and improvement of displacement-based design procedures, proposing improved ductility-equivalent viscous damping relationships for steel moment-resisting framed structures with dissipative beam-to-column partial-strength joints. These relationships can be used directly in procedures like the Direct Displacement-Based Seismic Design (DDBD) that uses effective stiffness, ductility-equivalent viscous damping relationships, and period-displacement relationships in a performance-based design approach. To this end, a finite element model of a steel beam-to-column sub-assemblage, characterized by an extended end-plate, is developed in ABAQUS. The model, which is validated against monotonic and cyclic experimental data obtained in previous research, is employed to carry out non-linear time-history (NLTH) analyses, using real records scaled to target several levels of ductility demand. A procedure is then proposed and applied to determine the ductility-equivalent viscous damping relationships of the sub-assemblages. The equivalent linearization technique is applied to the non-linear responses obtained in the NLTH analyses, using an elastic single degree of freedom structure and the elastic displacement spectra. The influence of joints mechanisms and of the dynamic characteristics of the structure in the equivalent viscous damping is investigated, and an expression for ductility-equivalent viscous damping is proposed. The proposed expression represents a clear improvement in relation to the existing expressions available in literature.     

Bernstein's Long Path to Membrane Theory: Radical Change and Conservation in Nineteenth-Century German Electrophysiology

This article aims at illustrating the historical circumstances that led Julius Bernstein in 1902 Bernstein, J and Tschermak, A. 1902. Ueber die Beziehung der negativen Schwankung des Muskelstromes zur Arbeitsleistung des Muskels. Pflügers Arch, 89: 289–331.  [Google Scholar] to formulate a membrane theory on resting current in muscle and nerve fibers. It was a truly paradigm shift in research into bioelectrical phenomena, if qualified by the observation that, besides Bernstein, many other electrophysiologists between 1890 and 1902 borrowed ideas from the recent ionistic approach in the physical-chemistry domain. But Bernstein's subjective perception of that paradigm shift was that it constituted a mere reinterpretation of the so-called preexistence theory advanced by his teacher Emil du Bois-Reymond in the first half of the nineteenth century.     

GIS-based methodology for Palaeolithic site location preferences analysis. A case study from Late Palaeolithic Cantabria (Northern Iberian Peninsula)

Factors involved in the selection of a settlement location are key issues in the understanding of hunter–gatherer subsistence strategies and social organization. Site location preferences are the result of a complex decision-making process, in which both economic and cultural needs are involved. This paper presents a specific methodology for site location analysis, based on the definition and calculation of a series of variables. This methodology, applied to Late Palaeolithic sites from the Cantabrian coast, enables an objective comparison between archaeological sites, and consequently the analysis of settlement patterns of Palaeolithic societies.