Friedrich Ratzel and the nature of (political) geography

It is impossible to understand Ratzel's Politische Geographie without placing the figure of its author in the perspective of the critical bourgeois geography of the eighteenth century and the first half of the nineteenth century. From this point of view, Ratzel is the last representative of this bourgeois movement born in the first part of the eighteenth century in Germany with the name of “pure geography” or “natural geography”, and developed in the following century thanks to the great works of Karl Ritter and Alexander von Humboldt. The purpose of bourgeois critical geography was to create a geographical discourse (a reasoning) able to transcend the identification between geographic knowledge and cartographic representation that was maintained by the Staatsgeographen—that is by the state geographers who defended the feudal aristocratic regime. But it is precisely this identification that German bourgeois geographers appropriated in the second half of the nineteenth century, after the bourgeoisie came into power through a compromise with its ancient political opponent. Only Ratzel, direct heir of the Erdkunde tradition of Ritter and von Humboldt, was an exception by opposing the new bourgeois state geography with his own state-based geography.     

Upper Palaeolithic hunter-gatherer subsistence in Mediterranean coastal environments: an isotopic study of the diets of the earliest directly-dated humans from Sicily

The subsistence of hunter-gatherers in the Mediterranean Basin has been the object of few studies, which have not fully clarified the role of aquatic resources in their diets. Here we present the results of AMS radiocarbon dating and of isotope analyses on the earliest directly-dated human remains from Sicily, the largest island in the Mediterranean Sea. The radiocarbon determinations show that the Upper Palaeolithic (Epigravettian) humans from Grotta di San Teodoro (15 232–14 126 cal. BP) and Grotta Addaura Caprara (16 060–15 007 cal. BP) date to the Late-glacial and were possibly contemporary. The diets of these individuals were dominated by the protein of large terrestrial mammalian herbivores, such as red deer (Cervus elaphus). There is no evidence for the consumption of marine resources, which is probably the result not only of the oligotrophic nature of the Mediterranean, but also perhaps of the lack of adequate technology for exploiting intensively the resources from this sea. In spite of being contemporaneous and of the cultural and technological affinities present between the San Teodoro and Addaura humans, the carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope composition of their bone collagen suggests that significant differences were present in their diets. In particular, the hunter-gatherers from Grotta di San Teodoro, in NE Sicily where coastal plains are backed by high mountain chains (Monti Nebrodi), probably had easy access to resources such as anadromous brown trout (Salmo trutta), which might not have been similarly available in the NW of the island, where reliefs are noticeably lower and watercourses fewer and farther between. This study shows that the high biodiversity of this region, which results from the complex topography of Mediterranean landscapes, was probably exploited opportunistically by Late-glacial foragers. Our data also suggest that intensification and diversification of food acquisition in Sicily did not start in the closing stages of the late Pleistocene, as in other Mediterranean regions, probably because the island had only been (re-)colonized by humans around the Last Glacial Maximum.     

Passive Control of Steel Storage Racks for Parmigiano Reggiano Cheese under Seismic Accelerations

Recent earthquakes in Italy resulted in the collapse of steel storage racks for aging Parmigiano Reggiano cheese, damaging a huge number of cheese wheels. In order to improve the seismic performance of surviving racks with low-budget solutions, when replacement cannot be considered, we investigate the possibility of using viscous dampers that connect the racks to a surrounding structure. Time-history analyses with natural and spectrum-compatible artificial accelerograms allow one to determine the optimal damping factor that reduces both the stress in the rack and the actions transmitted to the constraining structure. Results confirm the noteworthy benefits of the proposed retrofitting system.     

The public relevance of the church and Catholicism in Italy

Abstract

This article highlights the particular situation of the Catholic religion in Italy which distinguishes itself for its systematic organization, active association-forming and cultural vitality, unrivalled in any other European country either Protestant or Catholic. On the one hand the church in Italy still disposes of such a wealth of clergy and religious figures, dioceses and parishes, educational and social institutions, ecclesiastical groups and associations, and so on, that it can maintain a diffuse presence scattered over the national territory; it deploys numerous forces and resources which form an integral part of normal social relationships that animate civil society. On the other hand, the church and Italian Catholicism today are particularly active at a cultural level, with their contribution of ideas and experience on vital questions arising in social coexistence (ranging from the family to bioethics, from religious freedom to the secular State, from national identity to the multiethnic presence, and so on).     

Production and use of birch bark tar at the Neolithic pile-dwelling of Palù di Livenza (North-Eastern Italy) revealed by X-ray computed micro-tomography and synchrotron Fourier-transform infrared spectroscopy

Recent excavations at Palù di Livenza (northeastern Italy) revealed a multiphase Neolithic pile dwelling dated between ca. 4,300/4200 and 3,600 cal BC. Three lumps with teeth imprints and a larger amorphous piece from the Late Neolithic layers have been studied by X-ray computed micro-tomography (microCT) and synchrotron Fourier-transform infrared spectroscopy (FTIR). FTIR spectra match well that of birch bark tar and microCT of the larger piece has revealed a rolled-up structure likely corresponding to bark rolls. The lumps of birch pitch were probably chewed to soften the tar prior to be used as hafting adhesive or therapeutic substance. The rolled-up inner structure of the larger piece and the remains of birch bark tar and abundant charcoals on its surface suggest it probably corresponds to a rare waste product from allothermic tar production.     

Conservation and development strategies for larger cities

This paper focuses on the problem of overloading experienced by larger cities. This arises from the continued attractiveness of cities for work by increasing numbers despite environmental degradation and traffic congestion. The paper offers an analysis of ways out of the problem via a general strategy based on what the author calls the creation of alternative centralities in the case of the larger metropolitan areas, and the development of ‘urban networks’ in the case of the least intense urban areas.