Spatial Aggregation of Unevenly Distributed Points

Script to create polygons that would include a minimum of 5 artefacts, unevenly distribute

Spatial Aggregation of Unevenly Distributed Points

Script to create polygons that would include a minimum of 5 artefacts, unevenly distributedTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Physical barriers, cultural connections: Prehistoric metallurgy across the Alpine region

This paper considers the early copper and copper-alloy metallurgy of the entire Alpine region. It introduces a new approach to the interpretation of chemical composition data sets, which has been applied to a comprehensive regional database for the first time. The Alpine Chalcolithic and Early Bronze Age each have distinctive patterns of metal use, which can be interpreted through changes in mining, social choice, and major landscape features such as watersheds and river systems. Interestingly, the Alpine range does not act as a north-south barrier, as major differences in composition tend to appear on an east-west axis. Central among these is the prevalence of tin-bronze in the western Alps compared to the east. This 'tin-line' is discussed in terms of metal flow through the region and evidence for a deeply rooted geographical division that runs through much of Alpine prehistory

Mapping archaeometallurgical data of the Iberian Copper Age: different ways to look at a big picture

Traditionally, archaeometallurgical projects have visualised information through distribution maps of the find spots for different metal compositions or types of objects. However, this is limiting, and more innovative styles of communication are required to engage with more dynamic technological questions such as what underpins the use and circulation of metal. This paper compares four ways to process and represent the archaeometallurgical chemical composition dataset for Copper Age Iberia, and the different conclusions they tend to support. Using distribution maps, the wide spread of arsenical copper is clear, however more nuanced features are obscured. Through employing ubiquity analysis, with regular or irregular grids, it is possible to understand the relative importance of arsenical copper within the local consumption of metal, and how this relates to local extraction. While Relative Risk maps can suggest links between metal circulation and geographical features, particularly rivers. Rather than just being an aesthetic concern, we aim to demonstrate that visualisation of georeferenced data is an important research method

FLAME-DDatabase: An Integrated System for the Study of Archaeometallurgy

This paper discusses the reorganisation of archaeometallurgical legacy data for future research. When archaeometallurgical research aims to answer questions that involve significant movements of raw material or metal objects, it needs to rely on large sets of data. These data are available but scattered across hundreds of publications, where they are differently organised, based on the focus of the original papers. The FLAME-D database aims to collect this corpus of data and include it in a versatile structure that also maintains the information about the original data organization. The production of such a database requires transparent data transformations. The database is complemented by a series of online tools that make data available to answer new questions

The Bacteriophage Head-to-Tail Interface

International audienceMany icosahedral viruses use a specialized portal vertex for genome encapsidation in the viral capsid (or head). This structure then controls release of the viral genetic information to the host cell at the beginning of infection. In tailed bacteriophages, the portal system is connected to a tail device that delivers their genome to the bacterial cytoplasm. The head-to-tail interface is a multiprotein complex that locks the viral DNA inside the phage capsid correctly positioned for egress and that controls its ejection when the viral particle interacts with the host cell receptor. Here we review the molecular mechanisms how this interface is assembled and how it carries out those two critical steps in the life cycle of tailed phages