ESR response in tooth enamel to high-resolution CT scanning

High-resolution CT scanning of teeth with a resolution on the 20 to 30 μm scale introduces doses in the range of 250 to 420 Gy in the tooth enamel. If the induced doses cannot be precisely estimated, subsequent ESR dating analysis becomes impossible. Considering the increased availability of portable, high-resolution CT scanners, curators of valuable human dental fossils have to make an informed decision whether they want to preclude ESR analysis, one of the few dating methods that can be applied to older fossils.     

‘Singing oneself into a nation’? Estonian song festivals as rituals of political mobilisation

This article argues that Estonian song festivals were a powerful ritual of political mobilisation. Throughout their history, however, they had to be accommodated to narratives of ruling regimes. Taking Patrick Hutton's concept of such events as a ‘moment of memory’ with which images of the past are being reconstructed in a selective way, song festivals are on each occasion made to suit present needs. During the history of Estonian nationhood, these needs have been guided first and foremost by forms of political authority: during years of independence, the festivals were to serve different purposes than under imperial or Soviet Russian rule. Thus, the concept of ‘singing oneself into a nation’, popular in Estonian history textbooks, is only partly true. Although the performance of the festival changes only slightly through the years, its political significance changes enormously.     

A bioarchaeological approach to the Iron Age in Switzerland: stable isotope analyses (δ<Superscript>13</Superscript>C, δ<Superscript>15</Superscript>N, δ<Superscript>34</Superscript>S) of human remains

In Switzerland, a large number of Iron Age burial sites were found in the last century. Changes in living conditions and socio-cultural behavior may have occurred over time and space and could be reflected in the dietary habits, social stratigraphy within populations and migration patterns. This study attempts to shed light on these aspects with the application of stable isotope analyses. Human remains from 11 different burial sites (n?=?164) in the area of today’s Swiss Plateau and Swiss Alpine regions were investigated. Temporal and geographical variations as well as sex and age-related dietary differences were analyzed through isotopic studies (δ¹³C, δ¹⁵N, and δ³⁴S). In total, the data of 129 individuals could be evaluated. Highly significant differences between the burial sites were found, with higher δ¹³C and δ¹⁵N values in the Alpine regions. Cultural and/or climatic changes as well as the different geological conditions might have led to distinct patterns of crop cultivation and animal husbandry and consequently to significantly different dietary habits in the Plateau and the Alpine regions. The data indicate a higher intake of millet and animal protein including early dairy production in the southern regions, probably influenced by the Mediterranean world. Cultural exchange between geographical regions might have been facilitated by migration during the Iron Age as suggested by the δ³⁴S.     

Music and the Aesthetic Copernican Revolution of the Eighteenth Century

ABSTRACT

In the mid-eighteenth century music underwent a sudden and drastic revolution when composers “discovered” a new dimension to their art. This had immense repercussions on the philosophy of art, for the music created before and after this divide represents two different species of aesthetic experience, which in due course affected our understanding of the meaning and import of the other arts as well. Despite the immense aesthetic repercussions of this Copernican revolution in music, philosophers of art seem not to have taken much notice of it. This essay details the emergence of the relevant musical criteria during the eighteenth century and dwells on their long-term impacts on the philosophy of art.     

School killings in China: Society or wilderness (Respond to this article at http://www.therai.org.uk/at/debate)

Between March and May 2010 a series of school killings took place in mainland China. This article explores media discourses on the school killings and examines three cases in detail. It connects the search for underlying reasons and responsible authorities in relation to the murders with the wider search for ‘society’ in contemporary China, and concludes by emphasizing the gap between the official promotion of the idea of ‘society’ as a cohesive moral community and a parallel popular understanding of the contemporary Chinese social world as a savage wilderness.     

New Multilateral Development Banks and Green Lending: Approaching Scalar Complexities in the Global South

Newly established multilateral development banks promote green finance and support a green transition in the global South. This article examines the new multilateral development banks using a dynamic view and documents the projects and lending preferences of New Development Bank (NDB) in Brazil and Asian Infrastructure Investment Bank (AIIB) in Turkey. While AIIB and NDB have made it easier for global South actors to access infrastructural investment funding and are committed to expanding green lending, their commitment rests on the use of country systems and national financial intermediaries. This results in extending loans for projects with significant risk and ignoring the broader connections of the projects to the environmentally hazardous strategies of capital accumulation. Despite their strong green discourse, their design and the way their mandates have been interpreted render new multilateral development banks prone to business as usual.     

Window opening effects on structural behavior of historical masonry Fatih Mosque

Structural walls of old historical structures are either blind or have openings for functional requirements. It is well known that in and out of plane responses of structural walls are affected by the size, locations, and arrangements of such openings. The purpose of this investigation is to study the window opening effects on static and seismic behaviors of historical masonry old mosques. Fatih Mosque, which was converted from a church, constructed in 914 in Trabzon, Turkey, is selected for this purpose. The mosque is being restored. Structural exterior walls of the mosque were made using stone and mortar materials. When the plaster on the walls was removed during the restoration, 12 window openings were found as blind on the exterior structural walls of the mosque. Within the scope of restoration works, it is aimed to open such blind windows. In order to investigate the effects of the window openings on the structural behavior of the mosque, 3D solid and finite elements models of the mosque with and without window openings are initially developed. The experimental dynamic characteristics such as frequency, damping ratio, and mode shapes of the current situation of the mosque, where some windows openings are blind, are determined using Ambient Vibration Testing. Then, the finite element model of the current situation of the mosque is updated using the experimental dynamic characteristics. The static and seismic time history analyses of the updated finite element model with and without window openings are carried out. Structural behaviors of the mosque with and without window openings are compared considering displacement and stress propagations.