Jeehyun Lee

TL;DR: In this paper, a divergence-free weak formulation of a Stokes fluid and an elastic structure is presented, and the existence and uniqueness of a weak solution is proved under additional assumptions on the data.

TL;DR: An improved fdEIT image reconstruction algorithm that properly handles the interplay of conductivity and permittivity upon measured boundary voltage data is proposed and demonstrated by using computer simulations to validate its feasibility in future experimental studies.

TL;DR: It is suggested that multi-frequency time-difference images must be interpreted in terms of relative contrast changes with respect to frequency, primarily due to the limitation of the difference imaging algorithm.

TL;DR: This paper establishes an fdEIT image reconstruction algorithm based on a relationship between injection currents at two frequencies and a weighted difference of two corresponding complex voltages, and proposes the concept of an equivalent homogeneous admittivity whose value can be estimated by measuring induced voltages at the third frequency.

TL;DR: The effects of delays in vaccine production, seasonal forcing, and age-dependent transmission rates on the optimal control are examined and some optimal strategies are suggested through numerical simulations.