Experimental analysis of rubble stone masonry walls strengthened by transverse confinement under compression and compression-shear loadings

Stone masonry walls of ancient buildings have reasonable resistance to vertical loads but lower resistance to shear forces and reduced tensile strength. However, to achieve such compressive strength the masonry must not disaggregate when subjected to loading. This can be achieved if during the construction of the walls larger stones, usually referred as “through stones”, are used, spanning the thickness of the wall, making it possible to improve the transverse confinement of the masonry. For rehabilitation projects and structural reinforcement of such buildings, the transverse confinement can be achieved by fixing steel elements perpendicular to the wall. This confinement technique is often part of a more comprehensive rehabilitation solution, which includes the application of mortar or concrete reinforced layers applied to the wall surface.

This article presents results of an experimental research on material properties and mechanical characterisation of stone masonry specimens strengthened by two transverse confinement solutions (independent steel reinforcing rods and continuous steel ribbons wrapping the specimen). Specimens were tested under compression and compression and shear loadings.

This experimental work is part of a major research project to study the mechanical behavior of URM and strengthened walls, and the characteristics of the building materials of such specimens.     

Coming to terms with a difficult past: the trauma of the assassination of Hrant Dink and its repercussions on Turkish national identity

This paper takes as its subject the question of why some nations are less willing to acknowledge past atrocities. To answer that question, it focuses on the assassination of Hrant Dink – a Turkish‐Armenian journalist – and its repercussions on Turkish national identity. Scrutinising newspaper articles written before and after the assassination (2004–2007), it casts a detailed glance at the struggle between two carrier groups – pro‐ and anti‐acknowledgement groups – and argues that the assassination increased the likelihood of the acknowledgement of the mass killing of Armenians in 1915 by creating a cultural trauma informed by collective guilt. However, the relief generated by the funeral, combined with the strength of the master commemorative narrative regarding the mass killings, decreased that likelihood, and despite the huge public reaction created by the assassination there was no attempt at acknowledgement. As such, the paper contributes to our understanding of the trauma of perpetrators and claims that, in addition to other factors listed by earlier studies, cultural trauma is a necessary but not a sufficient condition for coming to terms with difficult pasts.     

Seismic Analysis of Masonry Gravity Dams Using the Discrete Element Method: Implementation and Application

Much research in recent years has focused on the seismic analysis of concrete and earthfill dams, and few works have addressed the case of masonry dams. The structural behavior of masonry dams is controlled essentially by its discontinuous nature, which may induce significant nonlinear response during an intense earthquake. In this article, a numerical tool based on the Discrete Element Method is presented, aimed at the static, dynamic, and hydromechanical analysis of masonry gravity dams. The use of discontinuous models is mandatory for the study of failure mechanisms involving the masonry discontinuities, the dam-rock interface or the rock mass joints. The Discrete Element Method is able to assemble continuous and discontinuous meshes simultaneously in the same model, providing a versatile tool to consider various assumptions and levels of analysis, ranging from simplified to detailed structural representations. A comprehensive study of the seismic behavior of Lagoa Comprida Dam, located in Portugal, is presented. Both continuous and discontinuous models were developed to assess the main failure mechanisms, including overstress, partial and global sliding, and overturning.     

Perceptual images of Conimbriga using High Dynamic Range

It is widely recognized that new technologies can play an important role in the interpretation of our cultural heritage legacy. This has become a powerful tool providing a better understanding of our past, and thereby, allowing us to attain a glimpse of the environments in which our ancestors lived. In this domain, the way we see such reconstructed environments is particularly important in order to establish an accurate interpretation of that historical setting. However, the desired visual accuracy in the representation of any archaeological scenario is strictly related to the technology used to visualize it. High Dynamic Range (HDR) technology encompasses the capacity to produce visual results similar to the visual acuity of the human eye, particularly in extreme lighting conditions, such as bright light or dim environments.     

The lower jaw and dentition of the traversodontid Exaeretodon riograndensis Abdala,Barberena & Dornelles,from the Brazilian Triassic (Santa Maria 2 Sequence,Hyperodapedon Assemblage Zone)

Exaeretodon riograndensis Abdala, Barberena, & Dornelles, 2002 Abdala, F., Barberena, M.C. and Dornelles, J.E.F. 2002. A new species of the traversodontid cynodont Exaeretodon from the Santa Maria Formation (Middle/Late Triassic) of Southern Brazil. Journal of Vertebrate Paleontology, 22: 313–325. [Taylor & Francis Online], [Web of Science ®] , [Google Scholar] is the most abundant traversodontid preserved in the basal Santa Maria 2 Sequence (Hyperodapedon Assemblage Zone), southern Brazil and is closely related to Exaeretodon argentinus Cabrera, 1943 Cabrera, A. 1943. El primer hallazgo de terápsidos en la Argentina. Notas del Museo de La Plata, Paleontología, 8: 317–331.  [Google Scholar] from the Ischigualasto Formation, Argentina. Previous anatomical studies of E. riograndensis have focused mainly on cranial material and little is known about the morphology of its lower dentition or postdentary bones. We describe the first fairly complete postdentary series of the mandible of E. riograndensis and provide additional information on its lower dentition. The postdentary bones of E. riograndensis include a complex coronoid, an angular with a delicate reflected lamina and a stout retroarticular process of the articular, contrasting with the morphology reconstructed for Argentinean specimens, which possess a small retroarticular process. Apart from that, the postdentary bones do not differ significantly from those known for E. argentinus, a fact expected due to the great similarity between other skeletal features of these species. Furthermore, the lower postcanines of E. riograndensis have virtually the same structure as those of E. argentinus, with an approximate quadrangular shape in occlusal view. Moreover, the transverse cusp row is placed anteriorly and comprises a lingual and a buccal cusp, and the occlusal basin delimited by the four main cusps is relatively deep. The new material does not add any taxonomically diagnostic features to E. riograndensis. However, the fossils greatly improve our understanding of the anatomy of the Brazilian species.     

A Genoese merchant and banker in the Kingdom of Naples: Ottavio Serra and his business network in the Spanish polycentric system,c.1590–1620

Abstract

The dense Genoese commercial networks – which were present in all territories under Spanish rule, fairs, commercial emporia and battlefields – were an essential factor for the survival of the crown. This raises some doubts about the dominating influence posed, according to traditional accounts, by the court in Madrid; the court was, indeed, a point of reference for the Genoese merchant families but by no means the only one. In fact, the Genoese always took care to be present in important harbours and markets, such as Naples, where they often had correspondents to look after the family’s multiple interests.

This article revolves around the crucial role played by Ottavio Serra (1570–1639), son of Giovambattista Serra, ‘signore’ of Carovigno and an active merchant and moneychanger in the viceroyalty of Naples during the first two decades of the seventeeth century. The importance of Ottavio was not limited to his participation in the economic life of Naples. The analysis of Ottavio’s activity as financial agent for his relatives and partners in Madrid, Genoa and Piacenza, among other locations, as well as the examination of his links with a great variety of economic centres in the Mezzogiorno, presents early-modern Naples as a highly ‘internationalised’ centre in the context of the polycentric Hispanic imperial system.     

Using the Capability Approach to Conceptualise Inequality in Archaeology: the Case of the Late Neolithic Bosnian Site Okolište c. 5200–4600 <Emphasis Type="SmallCaps">bce</Emphasis>

The past few decades have witnessed a growing realisation that market-based measures of human well-being—measures that centre on income and consumption distributions—miss some other perhaps even more essential elements of human well-being. This insight has found a prominent expression in the work of the Nobel Prize-winning economist Amartya Sen’s so-called capability approach. At the same time, the market-based measure of inequality as a function of the distribution of material remains in graves and other locations remain dominant in archaeology. In this paper, we explore the significance of the capability approach, and the associated concept of human well-being based on the idea of capabilities, to the archaeology of social inequality and social malintegration. We discuss these notions using the case study of the Late Neolithic Bosnian tell site Okoli?te and argue that there, in c. 5200–4600 bce, the monopolisation of certain critical goods led to a critical capability inequality, malintegration and to a prolonged period of social unrest and decline.     

Knowledge Transmission in Industrial Clusters: Evidence from EuroClusTex

Covering the knowledge economy scenario, this article attempts to illustrate the analysis of the employment of knowledge transmission channels in the EuroClusTex, cross-border textile and clothing cluster between northern Portugal and Galicia. Therefore, an exploratory research was conducted. Primary data were obtained through participation in events, from interviews with key informants (entrepreneurs, leaders of cluster support institutions and government representatives). The secondary data were provided by the cluster support institutions, international organizations and the literature review. The results showed that EuroClusTex contributes to the competitiveness of regions, boosting trade relations between Galicia and northern Portugal. The most effective knowledge transmission channels in EuroClusTex were identified as: imitation, relationship with suppliers, public policy and human resources training. Experiences similar to EuroClusTex can be considered and served as examples for the development of clustering policies in other countries.