177,595 research outputs found

    Master equation model for solute transport in river basins: part II basin fluvial scale

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    At basin scale the physical phenomenon of diffusion involves the intricate spreading and dispersion of substances within complex systems as networks of interconnected channels, streams, and land surfaces. Understanding this process is crucial for many purposes as management and conservation of water resources. We extend the model application of our previous work (Part I, Rizzello et al. in Stoch Environ Res Risk Assess 37:3807–3817, 2023) from channel to basin scale. We use conservation of mass and momentum to formulate and apply the Master Equation system at basin scale. The results on simulated events highlight the transition of the model from channel scale to basin scale

    Herbert Simon's heritage

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    One year after Herbert Simon's death, this paper tries to highlight the most relevant elements for economists in his scientific heritage.

    Pinning Control in Networks of Nonidentical Systems with Many-Body Interactions

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    We study the problem of controlling an ensemble of nonidentical dynamical units to a desired trajectory set by the pinner in the presence of multi-body interactions across the units. We provide sufficient conditions for local bounded convergence, and estimate the convergence bound as a function of the parameter mismatch between the units, and of the directed hypergraph describing their interacting topology. Numerical examples demonstrate the robustness of the approach
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