3 research outputs found

    Augmenting MRI scan data with real-time predictions of glioblastoma brain tumor evolution using exponential time integrators

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    We present an ultra-fast simulator to augment the MRI scan imaging of glioblastoma brain tumors with predictions of future evolution. We consider the glioblastoma tumor growth model based on the Fisher-Kolmogorov diffusion-reaction equation with logistic growth. For the discretization we employ finite differences in space coupled with a time integrator in time employing the routines from [Al-Mohy, et. al. Computing the action of the matrix exponential, with an application to exponential integrators, SIAM Journal on Scientific Computing, 2011] to compute the actions of the exponentials of the linear operator. By combining these methods, we can perform the prediction of the tumor evolution for several months forward within a couple of seconds on a modern laptop. This method does not require HPC supercomputing centers, and it can be performed on the fly using a laptop with Windows 10, Octave simulations, and ParaView visualization. We illustrate our simulations by predicting the tumor growth evolution based on three-dimensional MRI scan data.Comment: 18 pages, 6 figure

    Bezpiecze艅stwo uczelni - bezpiecze艅stwo szko艂y

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    Z wprowadzenia: "W roku 1986 w domu studenckim I.ehigh University (USA) zosta艂a zamordowana dziewi臋tnastoletnia Jeanne Ann Clery. Podj臋te po tragedii dzia艂ania rodzic贸w ofiary doprowadzi艂y do ujawnienia licznych patologicznych zjawisk na uczelniach ameryka艅skich, w szczeg贸lno艣ci przemocy i deficytu rozwi膮za艅 prawnych, reguluj膮cych sprawy' bezpiecze艅stwa campus贸w. Artyku艂 ukazuje inspirowan膮 艣mierci膮 J. A. Clery' ewolucj臋 prawa i przyj臋te koncepcje, zmierzaj膮ce do poprawy sytuacji."(...
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