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Editorial: Innovative Technologies and Clinical Applications for Invasive and Non-invasive Neuromodulation: From the Workbench to the Bedside.
Luigi Santarella: Reinforced concrete design culture through the technical literature
Luigi Santarella is considered to have been one of the most important Italian theorists in the field of reinforced concrete yet his professional activity is still completely ignored by the critical literature. The structures designed by Santarella – concrete frames, bridges, canopies for stadiums and roofing systems with innovative trusses – and built by contractors specializing in reinforced concrete construction represent the pragmatic experimental field of application of the building principles set out in his widespread theoretical books. The relationship between the building principles and the structural solutions analysed in his texts with his designed and realized structures, in the wider context of the design and construction culture of the time, will shed light on the interaction between the design process and construction instances as well as on the mechanics related to their dissemination through the technical literature
Mathematical Model of Easter Island Society Collapse
In this paper we consider a mathematical model for the evolution and collapse
of the Easter Island society, starting from the fifth century until the last
period of the society collapse (fifteen century). Based on historical reports,
the available primary sources consisted almost exclusively on the trees. We
describe the inhabitants and the resources as an isolated system and both
considered as dynamic variables. A mathematical analysis about why the
structure of the Easter Island community collapse is performed. In particular,
we analyze the critical values of the fundamental parameters driving the
interaction humans-environment and consequently leading to the collapse. The
technological parameter, quantifying the exploitation of the resources, is
calculated and applied to the case of other extinguished civilization (Cop\'an
Maya) confirming, with a sufficiently precise estimation, the consistency of
the adopted model.Comment: 9 pages, 1 figure, final version published on EuroPhysics Letter
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