Increasing data (INAA) on Ecuadorian obsidian artifacts: preliminary provenance and a clue for pre-Columbian eastward trade

In this work we carried out INAA major (Na, K, Ca and Fe %) and trace (ppm) elements (plus Mn by FAAS analysis) of 15 obsidian samples (waste flakes) coming from an unknown archaeological site (¹⁴C-AMS age of 1425 AD) located on the south-eastern flank of the back-arc Sumaco volcano (to the east of the Cordillera Real) and from two already known pre-Columbian archaeological localities: La Florida (Quito) and Milan (Cayambe). Literature compositional data of the Ecuadorian obsidian outcrops provide some constraints on the provenance of the analyzed waste flakes, even though different methods of analyses make comparisons a difficult task. Concerning the obsidian artifacts of La Florida and Milan, they come from the well known Sierra de Guamanì obsidian sources (Cordillera Real). By contrast, the obsidian fragments of the Sumaco settlement show some compositional characters compatible with obsidian erratic pebbles recently discovered in some river banks of the Amazonian foothills draining the easternmost flanks of the Antisana volcano in the Cordillera Real as well. In this way, the obsidian artifacts found at the Sumaco site reinforce the opinion that Ecuadorian source inventory is not yet exhaustive. Although the Antisana volcano seems to be the best candidate to find out additional primary outcrops of obsidian sources, it cannot be also excluded that sub-Andean and Amazonian people directly took advantage from obsidian secondary sources (e.g. river banks), rather than procurements from primary outcrops in the Cordillera Real. The new archaeological findings at the Sumaco volcano are really of paramount importance in tracing the ancient routes of a possible obsidian eastward trade toward the Amazonian region.     

Spatial distribution of US employment in an urban efficiency wage setting

We analyze whether efficiency wages operate in urban labor markets, within the framework proposed by Ross and Zenou, in which shirking at work and leisure are assumed to be substitutes. We use unique data from the American Time Use Survey (ATUS) that allow us to analyze the relationships between leisure, shirking, commuting, employment, and earnings. We confirm that shirking and leisure are substitutes, and present an estimate of this relationship, representing the only empirical test of the relationship between a worker's time endowment and shirking at work. Our findings point to the existence of efficiency wages in labor markets.     

La Espiral Cave (Cuba): Guano and signs of Plant Substances Used as Paint Ingredients

At La Espiral cave, located in Bahia Honda municipality (Artemisa province, Cuba), there are several pictographs, including two of particular importance due to the design used: one of concentric circles and another of a spiral. We analyzed the pigments and binders used in one of these pictographs. The chemical ingredients of the paint are considered in this article, as well as the use of bat guano as a major pigment compound. The apparent presence of ellagic acid, ellagitannin, or anthocyanins would strengthen the hypothesis that artists used vegetable protein as a paint binder or solvent.     

Comparative Seismic Risk Assessment of Basilica-type Churches

ABSTRACT

This paper discusses the seismic risk assessment of a Basilica-type church according to the provisions of the Italian Guidelines. A comparison between the results obtained with local and global approaches is reported, based on a knowledge process aimed to characterize the geometric and mechanical parameters required for a reliable structural analysis. To perform the global analyses the finite element technique was employed, with proper assumptions to account for the nonlinear behavior of masonry. Illustrating a case study, the paper critically discusses about the employability of pushover analysis methods for the seismic assessment of basilica-type churches.     

Foreign Jews in the western Alps (1938 – 43)

Abstract

This article examines the question of policy towards the Jews in the Italian occupied zone of southern France from 1940 to 1943. It develops the argument that in the World War II the Alps constituted a clearly demarcated geographical area that for Jewish refugees from all over Europe promised shelter and safety. A number of ‘exemplary cases’ (for example that of Angelo Donati) as well as an unpublished document relating to the case of ‘residence forcée’ in St Martin Vésubie, provided the opportunity for comparing different interpretations of Italian attitudes towards the Jews in those years.     

Church and state in the Italian crisis

Abstract

This essay explores the ways in which the positions and policies of the church have changed during the three principal phases of relations between the Catholic Church and the State since the founding of the Italian Republic. The first came after the Second World War when the church embarked on its democratic novitiate; the second was dominated by reformist project of Cardinal Montini; the leading role in the final phase during the papacy of John Paul II and the broader crisis of which the church was also part was played by Cardinal Ruini.     

Learning to design cultural districts and learning from designing them

Cultural districts are becoming an important field of study to promote a growing number of initiatives for local development. Despite substantial research in this field, knowledge gaps remain, especially with regard to initiatives at supra-urban level. Many policy-makers, funding agencies, local administrators and managers still face important design issues. This paper contributes to the developing body of theory on cultural districts in two ways. Firstly, focusing on concepts from complexity theory, it expands the debate on the conception of cultural districts as complex adaptive systems. Secondly, it highlights the dysfunctional tensions that can arise from conflicting ways of conceiving organizations, organizing and designing among ‘promoters’ and designers. We have been involved for three years in a large project aimed at designing a wide supra-urban cultural district in Italy, financed by a major banking foundation. Adopting an organizational perspective and through participative action research, we develop an explorative case study. Our core argument is that a linear, predictable and deterministic approach to analysis and design presents many limitations for such complex projects, offering learning opportunities from the design experience.