The Santa María pottery of El Bolsón valley (Catamarca,Argentina): Compositional characterization and implications on the elaboration processes,ca. 1000–1600 ce

The results obtained from the multi-analytic compositional characterization of ceramic pastes and paints of the Santa María style, from the El Bolsón valley (Belén Department, Catamarca Province, Argentina), are presented here. This pottery style had a wide regional distribution in Northwestern Argentina between ca. 1000 and1600 ce and is characterized by its complex iconography painted in black, cream and red. The analyses show that the containers correspond to the technical tradition of using grog temper and suggest that its manufacture involved a double firing process. This reveals a new practice for the time.     

A Bayesian approach to rapid seismic vulnerability assessment at urban scale

The seismic vulnerability of city centers is commonly assessed by extending the study methods applied to single buildings to urban aggregations. This approach is not always applicable at territorial scale, as it is uneconomical in terms of time and costs. An innovative method provides reasonable large-scale a priori estimation of parameters not directly evaluable from the exterior of buildings by elaborating values which can be measured from the outside. Those parameters are treated as continuous variables, by assigning them a suitable probability density function. The Bayesian approach is adopted, which allows the update of initial hypotheses by using new data gathered during on-site surveys. In this regard, a rapid survey form for the on-site data collection is proposed. An example of its application to a façade of a building structural unit in Santo Stefano di Sessanio in L’Aquila province (Italy) is proposed, showing promising preliminary results for buildings belonging to Italian historical centers.     

Shipwrecks on Roncador Cay,the Caribbean Sea and Their Relationship with Hurricanes, 1492-1920

International Journal of Historical Archaeology - Previous studies suggest that tropical storms and hurricanes are among the leading causes of shipwrecks in the Caribbean Sea since 1492. This paper...     

The Persistence of the Black Colour in Magnetite‐Based Pigments in Prehispanic Ceramics of the Argentine North‐West

The persistence of the black colour in magnetite‐containing paints in polychrome ceramics of the Argentine North‐West processed under conditions considered as oxidant has generated questions about ancient production technologies. In this work, the thermal oxidation reaction of magnetite to hematite under different temperatures, atmospheres and physicochemical characteristics of the materials is experimentally evaluated. The causes of this behaviour are elucidated, and it is concluded that in the archaeological context, a double‐firing process was not necessary to achieve the coexistence of different colours.     

In-Situ Destructive Testing of Ancient Strengthened Masonry Vaults

ABSTRCT

Developing suitable tools to assess the actual structural performance and designing and executing interventions to improve that performance is a key issue in the field of conservation and enhancement of architectural heritage. This article presents the results of five full-scale destructive tests performed on the Castello di San Pietro in Verona (North-East Italy), a building set on a hill above the city and going back to the 19th century under the Habsburg Empire. It evaluates the behavior of the barrel vaults of 5.6 m span, 1.1 m rise, and 27 cm thickness in the original building. Although experimental work is common in the relevant literature, the testing program described here was not performed on reconstructed vaults but on original elements, which can reveal their real behavior more clearly. Four strengthening solutions were also evaluated, in which organic and inorganic fibers were applied to both types of matrix.     

A review of (almost) 20 years of regional innovation systems research

ABSTRACT

The literature on regional innovation systems (RISs) has grown impressively in the last two decades. The objective of this study is to provide a comprehensive assessment of all RIS articles published in scholarly journals between 1998 and 2015. It aims to inform researchers of the empirical results obtained so far and highlight areas that need further work. This review describes how the RIS field has developed, charts the current body of RIS research and discusses recommendations for moving the RIS field forward.     

Macro-Scale Analysis of Damage to Churches after Earthquake in Abruzzo (Italy) on April 6, 2009

This article focuses on the effects of the earthquake which struck the Abruzzo region (Central Italy) on April 6, 2009, causing considerable damage to many ancient buildings, particularly churches. During the emergency after the earthquake, many churches and other historical monuments (towers, city walls, large town houses, etc.) were surveyed, according to first-level damage survey forms for Cultural Heritage buildings, by multidisciplinary working groups composed of experts from several Italian institutions (Universities, Ministry for Cultural Heritage, Fire Brigade, etc.). This article presents a statistical study on the information collected by the University of Padova during the surveys, which was later inserted and organized in a database, and illustrates data on damage assessment of the buildings in question. It also presents an intuitive overview of the seismic effects on several churches, allowing not only better understanding of the response of these structures to this particular earthquake, but also correlating data on it with its effects on the churches.     

Tacit coopetition: chimera or reality? Evidence from the Basque Country

Coopetition is a strategy by which firms benefit from both collaboration and competition. Collaboration among competitors allows these to obtain advantages such as the joint creation and diffusion of knowledge, the exploration of new market opportunities, the identification of long-term innovation projects related to potential market, product or process diversification, or the gaining of access to external sources while still competing in certain areas. This paper focuses on the concept of tacit coopetition, which is defined as cooperation activities between neighbouring competitors located in the same region. Our goal is to assess the influence of tacit coopetition on the cooperative pattern of firms, as an alternative to promoting innovative projects among competitors. The analysis is performed in the county of Durango, located in the Basque Country (Spain). In particular, we seek evidence of whether tacit coopetition is a reality that can be objectively observed in Durango, and therefore, has the potential for a wider generalization of the phenomenon, or is instead a conceptual rhetoric (i.e. chimera) that is only observable in specific cases. The paper provides three major results. First, it sets out to identify whether tacit coopetition is occurring in Durango. Second, it identifies the factors influencing it, and finally, assesses the impact of tacit coopetition on firm performance.