This article explores a meshwork of citations to other material cultures and architectures created by the form and ornament of house-shaped early medieval recumbent stone monuments popularly known in Britain as ‘hogbacks’. In addition to citing the form and ornament of contemporary buildings, shrines, and tombs, this article suggests recumbent mortuary monuments referenced a far broader range of contemporary portable artefacts and architectures. The approach takes attention away from identifying any single source of origin for hogbacks. Instead, considering multi-scalar and multi-media references within the form and ornament of different carved stones provides the basis for revisiting their inherent variability and their commemorative efficacy by creating the sense of an inhabited mortuary space in which the dead are in dialogue with the living. By alluding to an entangled material world spanning Norse and Insular, ecclesiastical and secular spheres, hogbacks were versatile technologies of mortuary remembrance in the Viking Age.

The polycentric nature of Neolithic developments in the Middle East has prompted several discussions related to the processes driving regional diversification in the emergence of agglomerate societies. Archaeologists have recognized how diverse social, environmental, and material landscapes shaped various communities, resulting in a heterogenous Neolithic world. In this paper, we use portable x-ray fluorescence analysis to determine the use of different chert resources at the site of Çatalhöyük, Turkey, and question how their consumption affected, and was affected by, different social and material practices enacted within the community. We adopt a network perspective to examine the range of behaviours that consumed particular resources, and trace how alterations in these networks impacted the social fabric of Çatalhöyük. Ultimately, we conclude that different investments involved in the consumption of each resource either promoted or restricted their use through time. A more complete picture of Neolithic life, we suggest, takes note of the varied relationships that communities developed with nearby social and environmental landscapes, including nuances in the ways in which resources were incorporated into different facets of each community.

This paper presents the results of the use of a minimally destructive biomolecular technique to explore the resource networks behind one of the first specialized urban crafts in early mediaeval northern Europe: the manufacture of composite combs of deer antler. The research incorporates the largest application of species identification by peptide mass fingerprinting (ZooMS) to a mediaeval artefact assemblage: specifically to collections of antler combs, comb manufacturing waste, and raw antler from Ribe, Aarhus, and Aggersborg. It documents the early use of reindeer (Rangifer tarandus) antler, from the 780s AD at the latest, presenting the earliest unambiguous evidence for exchange-links between urban markets in the southern North Sea region and the Scandinavian Peninsula. The results demonstrate that the common conceptual distinction between urban hinterlands and long-distance trade conceals a vital continuity. Long-range networks were vital to urban activities from the first appearance of towns in this part of the world, preceding the historically documented maritime expansion of the Viking Age. We consequently suggest that urbanism is more appropriately defined and researched in terms of network dynamics than as a function of circumscribed catchment areas or hinterlands.

“Weak ties”, a valuable aid in getting a job, are generally work ties. One reason for this feature is not that former colleagues increase one’s information but rather that they value the pursuit of past collaboration. We examine the consequence of the collaboration ties hypothesis in the financial industry labor market. In finance, the labor market values the assets that financial operatives take with them from one firm to another, such as knowledge, know-how and customers. Since assets are to a certain extent shared among co-workers, it is worth hiring business relations and former colleagues or moving in teams: this enables a better transfer of assets such as idiosyncratic work routines, distributed knowledge, or joint customers. To demonstrate our claims we rely on an online survey launched with eFinancialCareers.fr collected in September 2008 among French financial employees. This questionnaire shows that working at the core of financial markets favors the accumulation of key moveable assets on the one hand and of collaboration ties on the other. That is, collaboration ties and key moveable assets are strongly correlated. The moving of key assets, collaboration ties and notably the combination of those two dimensions all result in increased wages.

Research on Late Neolithic–Early Bronze Age society in southernmost Scandinavia has to a large extent focused on the creation of social hierarchy and on elite networks upheld by individuals. This has meant that the importance of collective strategies has been underplayed. In the south-west corner of Sweden, about eighty house remains from the Late Neolithic and the earliest Bronze Age have been excavated within a small area. It is the largest concentration of houses from the period so far excavated in southern Scandinavia. The settlement pattern reveals both single farms and one site, Almhov, with a concentration of several contemporary farms with large houses. The aim of this article is to highlight collective aspects, recognizing that both collective and individual strategies are important in the formation of hierarchical societies. House remains as well as graves and their placement in relation to each other within the local landscape are the archaeological material in focus, regarded as materializations of economic and social relations. It is argued that collective strategies were an important part of creating and maintaining economic and social position.

This article examines the role of a range of large settlements in late Iron Age and early Roman southern Britain (c. 100 BC–AD 70) conventionally described as oppida. After reviewing current perspectives on the function and chronology of British oppida, new insights are provided through the statistical analysis of assemblages of brooches and imported ceramics at a broad sample of sites. Analysis of material culture reveals distinct similarities and differences between several groups of sites, often transcending regional traditions and supposed tribal boundaries. This patterning is primarily explained by the emergence of new forms of political organization prior to Roman annexation, particularly the creation of the Southern and Eastern Kingdoms.

Il existe en mécanique, de nombreuses méthodes de détermination des caractéristiques mécaniques des matériaux (jauges électriques, extensomètres mécaniques...). Les méthodes optiques apportent dans ce domaine un plus, notamment à cause de leur particularité d'être des méthodes de mesure sans contact. Cet article décrit la méthode de diffraction optique des réseaux appliquée à la détermination des caractéristiques mécaniques du polycarbonate, sollicité en traction uniaxiale en température pour des éprouvettes planes et à l'ambiante pour des éprouvettes cylindriques.

On démontre un théorème de Voronoï (caractérisation des maxima locaux de l’invariant d’Hermite) pour les familles de réseaux paramétrées par les espaces symétriques irréductibles non exceptionnels de type non compact.

Cet article propose une analyse de la coopération dans les relations contractuelles à partir d'une hypothèse de rationalité procédurale. Suivant la théorie du framing de Lindenberg, nous définissons l'égoïsme éclairé comme la rationalité mise en œuvre lors des relations contractuelles. La coopération s'explique alors par la volonté de maintenir la relation qui diminue la saillance du cadre de gain; cette volonté est entretenue par l'échange de si-gnaux relationnels entre les parties. Si les possibilités d'opportunisme sont importantes, la coopération nécessite d'être soutenue, d'abord par la formalisation d'un contrat puis,plus les enjeux augmentent, par l'encastrement dans un réseau. Des mécanismes de réputation et de sélection peuvent alors être mobilisés. Nous montrons que dans une telle approche, l'acceptation par les parties de l'incomplétude inévitable de leur contrat est un signal positif, nécessaire à l'établissement de la coopération.