A non-invasive study of Roman Age mosaic glass tesserae by means of Raman spectroscopy

Ancient mosaic tesserae are a range of materials of very varied and complex nature, including pottery, stone and glass. Raman spectroscopy is a powerful tool for the analysis of all these kinds of materials. In the particular case of glasses, this technique can be used both for a study of surface weathering and for the characterization of bulk structure, but it has not yet been extensively used for the characterization of mosaic glass tesserae. We carried out Raman analyses on a set of Roman and Late Antiquity period mosaic glass samples, which allowed a good characterization of both the glass matrix and the crystalline inclusions. All the samples show the typical Raman signatures of soda-lime-silicate glasses. Several crystalline phases were also identified, being relics of raw materials used during the glass manufacturing process, such as quartz and feldspars, or linked to the glass color/opacification, such as bindheimite and cuprite. The analyses also led to the identification in some blue, turquoise and green tesserae of calcium antimonate, whose Raman signature has only recently been recognized in the scientific literature on mosaic glasses. Some emphasis is given to the analysis of red lead-containing tesserae, colored with Cu⁺ ions or even Cu⁰ (or Au⁰) metal nanoparticles. Samples with peculiar compositions, as well as “modern” (and restoration) samples, could quite easily be distinguished from the ancient ones by their Raman spectra.     

Identifying foreigners versus locals in a burial population from Nasca, Peru: an investigation using strontium isotope analysis

During the several thousand years of human occupation in the Nasca drainage on the south coast of Peru, population movement into and out of the region impacted the formation and organization of society, as well as contributed to major cultural transformations. This study identifies foreign versus local individuals through the investigation of burial practices and strontium isotope analysis of human remains from the sites of La Tiza and Pajonal Alto dating from the Early Intermediate Period through the Late Intermediate Period (A.D. 1–1476). Of the ten samples analyzed, two individuals dating to the Middle Horizon were identified as foreigners. One of these individuals was buried in a new elite tomb type providing additional evidence that the Wari state incorporated Nasca into its realm. Two headless individuals, one dating to Middle Nasca with clear evidence of decapitation, and another dating to the Late Intermediate Period who was likely decapitated, were both locals. This suggests the practice of decapitation took place among local groups, and that the practice of decapitation and the use of heads as ritual items or trophies may have continued later in time than previously thought.     

Comparative Seismic Risk Assessment of Basilica-type Churches

ABSTRACT

This paper discusses the seismic risk assessment of a Basilica-type church according to the provisions of the Italian Guidelines. A comparison between the results obtained with local and global approaches is reported, based on a knowledge process aimed to characterize the geometric and mechanical parameters required for a reliable structural analysis. To perform the global analyses the finite element technique was employed, with proper assumptions to account for the nonlinear behavior of masonry. Illustrating a case study, the paper critically discusses about the employability of pushover analysis methods for the seismic assessment of basilica-type churches.     

The spectacle of the poor. Or: ‘Wow!! Awesome. Nice to know that people care!’

On the night of 14 November 2012, a police officer of the New York Police Department encountered a homeless person while performing his duties around Times Square. He gave him a pair of boots and while doing so, he was photographed by a tourist. The photo was posted on Facebook, receiving in a few days more than 1.6 million visits. The paper unfolds the reasons why this particular image and story have gone, as the media has put it, ‘viral’. The paper investigates the spaces that have emerged in the media elongation of DePrimo's practice of care and, introducing the notion of ‘spectacle of the poor’, it argues that this specific case simplifies the dominant western framings around matter of ‘caring for the poor’. The political and cultural consequences of these framings are investigated, and reflections on how to tackle them provided.     

Ideological Warriors and Constituent Servants: Understanding the Determinants of Participation on Health Care Legislation in the Polarized Senate

Recent scholarship on the Senate indicates that partisanship and polarization have fundamentally changed the dynamics and the nature of policy making in the institution. To understand how senators balance their roles as constituent servants and partisan warriors, we examine senators’ participation in floor amending on major health legislation over a 10-year period (2000–2010). Health care is central to the ideological divide over the nature of the welfare state and has a significant impact on constituents. Unlike previous studies, we develop a fuller picture of the factors that motivate senators to participate by analyzing both amendments filed to a bill and amendments considered on the floor. We find that minority party status and ideology, both the liberal-conservative dimension and ideological extremism, are important indicators of participation. Furthermore, senators elevate ideology in comparison to constituent need when an issue is a presidential priority. Finally, the influence of constituency factors varies by party. For Democrats, their ideological commitment to the social welfare state makes them more likely to participate on health issues regardless of constituent need. However, Republican senators become more likely to sponsor amendments as the level of observable constituent factors increases.     

Gestures of judgement and welcome in public spaces: hypervisible migrant newcomers in Darwin,Australia

This paper draws on ethnographic research to show how pigmentation intensities of skin and facial characteristics make bodies of colour recognisable in public spaces of Darwin, a small multiethnic and multiracial north Australian city. This paper shows that the visibility of newcomers, in particular, humanitarian migrants from countries in Africa, the Middle East and Asia, circulates negative sentiments of fear, anxiety and discomfort in public spaces when instantaneous judgements are made. These judgements of misrecognition made by residents of diverse ethnic and racial backgrounds lead to simmering tensions that unfold as visceral events of vulnerability in public spaces such as bus interchanges, neighbourhood streets, shopping centres and car parks. These events that have the potential to wound and numb bodies contribute to the “urban unconscious” of Darwin as a city where public spaces are safe with heightened surveillance. This paper argues, however, that events of hypervisibility, judgement and interracial tensions can unfold quite differently in public spaces if humanitarian migrants sense gestures of welcome, particularly from Aboriginals. Such fleeting moments of welcome in Darwin have the potential to bring together bodies with different histories and geographies of racialisation, so that multiple publics emerge through everyday habits of living with difference.     

THE TIBETAN VILLAGE OF NORTH WEST YUNNAN-a basic grammar of local authenticity

This work is the result of a journey in North West Yunnan. The European architects try to identify and explain which the main characters of local authentic architecture are, and to define a basic grammar. Observing the ongoing trends of change, they make comments and give some basic personal suggestions about architectural conservation. Authenticity is not an absolute idea and it should be clear that the following observations come from a European conservationist point of view. The document is written in the perspective of promoting a conservation oriented to tourism development in the area.     

Immunological evidence of Plasmodium falciparum infection in an Egyptian child mummy from the Early Dynastic Period

A 15–18 months old child mummy, presently housed in Turin's Museum of Anthropology, was discovered in Gebelein (Upper Egypt) during excavations carried out by the Missione Archeologica Italiana, most likely in 1914.