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Building on recent work identifying how the infrastructures of human social and economic life themselves depend on the "natural infrastructure" of biogeochemical systems, I explore the idea that infrastructuring - involving causal relations between subsystems operating at different timescales - might be a strategy widely adopted by matter undergoing self-organization under planetary conditions. I analyze the concept of infrastructure as it is used to describe features of the human "technosphere" and identify the importance of a difference in timescales between supporting and supported structures and processes. I explore some examples of how the wider planet might be said to engage in timescale-distancing and infrastructuring, focusing in particular on examples from the hydrosphere and biosphere. I then turn to the question of how to explain infrastructuring, developing a neocybernetic account of infrastructuring as involving the separation of a system into subsystems at different timescales in mutual but asymmetrical causal relations. I conclude by exploring the implications of this approach for the way we think about planets in general and the human technosphere. [ABSTRACT FROM AUTHOR]

Highlights • Historical disciplines offer important human-scale data about climate-adaptation. • Global change researchers can use historical data to inform scenario planning. • We present a 'new social contract' for collaboration between historical and global change disciplines. • Co-designing and publishing synthesised research and communicating historical information in museums. Abstract We argue that the deep time perspectives offered by historical disciplines, such as archaeology and history, provide important human-scale data about climate-adaptation over long timescales, and that these insights are currently lacking in global change research and Intergovernmental Panel on Climate Change reports. Pre-modern societies are not comparable with contemporary societies, but the completed experiments they represent can offer evidence of the consequences of climate change, the challenges of uncertainty and socio-cultural limits to adaptation. The limited visibility of data on long-term human interactions with climate change in global change research could be overcome through a 'new social contract', a two-way movement between global change and historical disciplines to, 1) make use of, and apply, historical data to contemporary climate-related challenges, 2) design robust interdisciplinary, and transdisciplinary research, 3) publish synthesised research in high-impact climate-adaptation journals, and 4) communicate research to the public in cultural history museums. [ABSTRACT FROM AUTHOR]

In this study, the large-amplitude free vibration of magneto-electro-elastic curved panels was investigated. The panel was considered to be simply supported on all edges and the magneto-electro-elastic body was subjected to the electric and magnetic fields along z direction. To obtain the governing equations of motion, the Donnell shell theory and the Gauss's laws for electrostatics and magnetostatics were used. The first mode of vibration of these smart panels was studied in this paper. To this end, the nonlinear partial differential equations of motion were reduced to a nonlinear ordinary differential equation by introducing trial functions for displacements and rotations and then by applying the single-mode Galerkin method on the obtained equation. The resulting equation was solved by multiple timescales perturbation method. Some numerical examples were presented to validate the study and to investigate the effects of several parameters such as geometry of the panel and the magneto-electric boundary conditions on the vibration behavior of these smart panels. [ABSTRACT FROM AUTHOR]