Engineering the North American waterscape: The high modernist mapping of continental water transfer projects

Starting in the late 1950s, at least fifteen separate proposals to radically alter the North American waterscape emerged. These proposals typically sought to bring water from northern regions (especially in Canada) to southern ones in the United States and Mexico through canal construction, the massive alteration of river flow, and (in some cases) nuclear excavation. This study analyzes the cartographic strategies used in support of re-engineering the continent’s water flow. The project maps promoted a specific political agenda that sought to redistribute North America's water resources by transcending political boundaries and physical barriers. Furthermore, conventions of cartographic representation, particularly the need for generalization and simplification, worked to reinforce and heighten the original modernist, engineering ethos. This led to representations that de-emphasized political communities and boundaries, that both assumed and hid nuclear technology, and that ultimately removed water from the natural environment by treating it as a purely abstract resource.     

Irish Protestant migration and politics in the USA,Canada, and Australia: a debated legacy

In the USA, the rediscovery and celebration of Irish Protestant ancestry has extended in recent years to arguments by some scholars, political journalists, and politicians that there exists today an identifiable Scots-Irish socio-political legacy. This essay explores the history and cultural context of Irish Protestant migration and assesses its contemporary ramifications at the national level and in a critical state-level case (Kentucky). To assist in identifying the factors that have fostered or mitigated Irish Protestant identity/ies, comparisons will be made between the American experience and the very different ones of two other major recipient countries: Canada (and the province of Ontario) and Australia (and the state of New South Wales). Source regions, religious affiliation, the timing and magnitude of mass migration, and settlement patterns have all mattered in determining the socio-political roles played by Irish Protestants in the three former British colonies since the eighteenth and nineteenth centuries. Even more important have been the local economic and political contexts, including prevailing political party structures and competition. These factors explain why none of the three case countries, the USA included, bears witness to a coherent, identifiable Irish Protestant socio-political legacy.     

Chemical characterisation of glass mosaic tesserae from sixth-century Sagalassos (south-west Turkey): chronology and production techniques

Little is known about the origin, supply pattern and production technology of Byzantine glass mosaic tesserae. In this study, we have analysed forty-eight glass tesserae from Sagalassos (Asia Minor) of different colours and from two archaeological contexts that were stratigraphically dated to the sixth century CE. The main aim was to identify the raw materials, colourants and opacifiers as well as secondary working practices that are reflected in the composition (EPMA, LA-ICP-MS analyses) and the microstructure (XRD, SEM-BSE) of the tesserae. The set of samples retrieved from the Roman Baths complex at Sagalassos is compositionally very homogeneous, representing possibly a single commission, and can be tentatively dated to the late Roman period. In contrast, the assemblage associated with the construction of a Byzantine church around the turn of the sixth century CE is more diverse, suggesting that these tesserae were produced from more than one silica source. This highlights a diversification in the supply and manufacture of glass tesserae during the Byzantine period.     

Crystallographic and structural transformations of sedimentary chalcedony in flint upon heat treatment

The early occurrence of intentional heat treatment of silica rocks has recently become a key element in the discussion about the cultural modernity of prehistoric populations. Lithic vestiges are the only sources that remain of this process and the understanding of the material’s properties and transformations are essential for reconstructing the conditions and parameters applied during heat treatment. Several models of the structural transformations upon heating have been proposed in the current literature. These models are often contradictory and do not account for the most recent structural and mineralogical data on chalcedony. In order to propose a new model, we elaborated an experimental procedure and applied different techniques involving infrared spectroscopy, solid state NMR, X-ray diffraction and electron microscopy. The results show that the major transformation to happen is the loss of silanole (SiOH) and the creation of new Si-O-Si bonds according to the reaction: Si?OH HO-Si → Si-O-Si + H₂O. This reaction starts between 200 °C and 300 °C and causes an increase in the hardness of the rocks. The maximal annealing temperature and the ramp rate are the functions of the ability of the structure to evacuate newly created H₂O and depend on the size of the specimen and the volume of its porosity. These results also show that the annealing duration at maximum temperature can be relatively short (<50 min) for a sufficiently large amount of transformation to be accomplished.     

Age‐Related Cortical Bone Maintenance and Loss in an Imperial Roman Population

This article explores age‐ and sex‐related patterns of cortical bone loss, assessed by radiogrammetry of the second metacarpal, from a skeletal sample excavated from the Imperial Roman port city of Velia (1st and 2nd century ad ), to contribute to our understanding of health and disease during the Imperial period. Patterns of age‐ and sex‐related bone loss and health at Velia are also compared with other historical samples and to modern clinical data. It was hypothesised that patterns of age‐ and sex‐related bone loss in this well‐represented Roman sample (n = 71) would mirror those reported in modern populations. Differences in the quantity of cortical bone between three age groups (18–29, 30–49 and 50+ years) are significant in both men and women; however, the pattern of bone loss differs between the sexes. Women show a gradual decline in bone quantity beginning in middle age, whereas men only lose bone in old age. However, there are no significant sex differences at any age group in the metacarpal cortical index. These findings suggest the hypothesis should be refuted because significant sex differences, particularly in old age, are an expected hallmark of bone loss in Western populations today. The possible biocultural and gender‐related factors that may have contributed to the observed patterns of bone maintenance and loss at Velia are discussed. Copyright © 2011 John Wiley & Sons, Ltd.     

Marchés des produits de luxe et division internationale du travail (XIXe–XXe siècles)

Cet article aborde la question des changements, dans la très longue durée, de la division internationale du travail à partir d'un observatoire qui est l'échange de produits de luxe. Cette approche est loin d'être mineure, car le commerce international s'est structuré, à l'époque moderne, à partir de ces produits de prix élevé. Dans la première moité du XIX^e siècle, les trois évolutions les plus importantes ont été la régression structurelle des exportations de l'Asie des produits de haute qualité vers les produits primaires, la situation d'exportateur primaire des états-Unis et la division du travail entre Grande-Bretagne et France, entre exportations de produits industriels de qualité moyenne et exportations de produits de luxe et demi-luxe. Cette division internationale du travail marque encore fortement les échanges du XX^e siècle. Au travers de cette étude sont recherchés les déterminants de la division internationale du travail, qui ne se comprend guère avec l'analyse économique standard d'inspiration ricardienne ou néoclassique. Des raisons complexes—provenant de la structure sociale des marchés des pays exportateurs, de leurs traditions de savoir-faire, des pratiques et des circuits commerciaux, des usages de paiement et de la structure des circuits des compensations internationales—expliquent que les actions individuelles des agents économiques convergent vers des configurations macroéconomiques qui ont leurs logiques propres.     

Potential Solutions to Public Deliberation Problems: Structured Deliberations and Polarization Cascades

Some deliberative theorists advocate for increased public participation to improve the health and vitality of democracy, but skeptics warn that public deliberation may fall prey to multiple decision-making pathologies. We describe a research program based on structured public deliberations about science and technology policies that was designed to explore the validity of critics' worst fears. In this research, we specifically test the complaint that group deliberations often bias toward the original majority preferences because of cognitive and affective errors in decision making, such as deference to the numerical majority opinion held within a group. Our results, based on data collected from a set of small-group public deliberations about nanotechnology, offer weak support to the polarization hypothesis. We explain this finding as the likely consequence of manipulating two key variables of deliberations: task facilitation and the quality of the argument pool. As a result, we argue that it is possible to structure public deliberations about policy to mitigate known decision-making problems. We conclude by also warning scholars of the dangers in assuming that opinion change consistent with polarization effects is inherently the result of undesirable decision-making qualities.     

The Panstereorama: City Models in the Balloon Era

The nineteenth-century ‘panstereorama’ was an urban relief model placed on display as a public spectacle. In this article, I consider first two affiliated forms that help to explain the genre, namely panorama paintings and plans-reliefs. I then go on to consider urban regional practices of city modelling in London and Paris before examining in detail panstereoramas representing Paris and New York. It is argued that this form of model urban cartography served as proxy for the view obtained from the increasingly popular balloon trip and that it accordingly provided virtual travel to, and a map of, the cities depicted.