Selected article for: "exponential function and step function"

Author: Martin Spousta
Title: Parametric analysis of early data on COVID-19 expansion in selected European countries
  • Document date: 2020_4_3
  • ID: 3b6n8un0_7
    Snippet: where α i and a i are unknown parameters. The sum goes trough individual centers of the disease expansion. These centers carry constant parameters α i and a i only over a limited time interval which is characterized by a step function χ i (t). The full description of the outbreak by a function (1) can be replaced by exponential dependence with time dependent parameter a(t), that is by the function.....
    Document: where α i and a i are unknown parameters. The sum goes trough individual centers of the disease expansion. These centers carry constant parameters α i and a i only over a limited time interval which is characterized by a step function χ i (t). The full description of the outbreak by a function (1) can be replaced by exponential dependence with time dependent parameter a(t), that is by the function

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