Wyniki wyszukiwania dla: BICHARACTERISTICS, BLOOD FLOW MODELING, HYPERBOLIC SYSTEM, LEAP-FROG SCHEME, NONUNIFORM DISCRETIZATION, OPERATOR SPLITTING - MOST Wiedzy

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Wyniki wyszukiwania dla: BICHARACTERISTICS, BLOOD FLOW MODELING, HYPERBOLIC SYSTEM, LEAP-FROG SCHEME, NONUNIFORM DISCRETIZATION, OPERATOR SPLITTING

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Wyniki wyszukiwania dla: BICHARACTERISTICS, BLOOD FLOW MODELING, HYPERBOLIC SYSTEM, LEAP-FROG SCHEME, NONUNIFORM DISCRETIZATION, OPERATOR SPLITTING

  • Blood Pressure Estimation Based on Blood Flow, ECG and Respiratory Signals Using Recurrent Neural Networks

    Publikacja

    - Rok 2018

    The estimation of systolic and diastolic blood pressure using artificial neural network is considered in the paper. The blood pressure values are estimated using pulse arrival time, and additionally RR intervals of ECG signal together with respiration signal. A single layer recurrent neural network with hyperbolic tangent activation function was used. The average blood pressure estimation error for the data obtained from 21 subjects...

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  • Ground-based, Hyperbolic Radiolocation System with Spread Spectrum Signal - AEGIR

    Publikacja

    - Rok 2011

    The most popular radiolocation systems in the world (at present), is the American GPS (Global Positioning System). It is managed by the Department of Defense and there is always the possibility of the occasional inaccuracies or deliberate introduction of errors that prevent its use by the special services or armies of other countries than the U.S.A. This situation has spawned the need to develop an autonomous, ground-based radiolocation...

  • Impact of surface skin temperature change on blood flow characteristics in palm

    Publikacja

    - Rok 2014

    Heating a human palm during 3 minutes period causes changes in superficial skin temperature and leads to thermoregulation system response. The response time and level of flow characteristics change depend on the subject hand size and health of his vascular tree. A solution of Pennes bioheat propagation model was analyzed in order to see how much heat has to be transferred into the tissue to extort the observable reaction. The reflective...

  • On various modelling approaches to real-time visualisation of blood flow

    Publikacja

    - Rok 2015

    This paper reviews various modelling approaches to real-time visualisation of blood flow. These include classic, macroscale approach based on the momentum conservation equation together with a proper constitutive equation. Moreover, modern micro- and mesoscale approaches, such as molecular dynamics and dissipative particle dynamics, are discussed. Advantages and disadvantages of the discussed methods are highlighted with particular...

  • A SHORT REVIEW OF BLOOD FLOW MODELLING METHODS: FROM MACRO- TO MICROSCALES

    Publikacja

    - TASK Quarterly - Rok 2017

    The aim of this paper it to review various scale approaches to the blood flow modelling. Blood motion may be described by three types of mathematical models according to the observed scales or resolutions, namely microscopic, mesoscopic and macroscopic descriptions. The above approaches are discussed together with their advantages and disadvantages. Several results of mesoscopic simulations are presented with particular attention...

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  • Doppler blood flow recordings

    Dane Badawcze
    open access

    Vital signals registration plays a grate role in biomedical engineering and education process. Well acquired data allow future engineers to observe certain physical phenomenons as well learn how to correctly process and interpret the data. This data set was designed for students to learn about Doppler phenomena and to demonstrate correctly and incorrectly...

  • Piotr Szczuko dr hab. inż.

    Osoby

    Katedra Systemów Multimedialnych

    Dr hab. inż. Piotr Szczuko w 2002 roku ukończył studia na Wydziale Elektroniki, Telekomunikacji i Informatyki Politechniki Gdańskiej zdobywając tytuł magistra inżyniera. Tematem pracy dyplomowej było badanie zjawisk jednoczesnej percepcji obrazu cyfrowego i dźwięku dookólnego. W roku 2008 obronił rozprawę doktorską zatytułowaną "Zastosowanie reguł rozmytych w komputerowej animacji postaci", za którą otrzymał nagrodę Prezesa Rady...

  • Numerical Analysis of Flow in Building Arrangement: Computational Domain Discretization

    Publikacja
    • M. Sosnowski
    • R. Gnatowska
    • K. Grabowska
    • J. Krzywański
    • A. Jamrozik

    - Applied Sciences-Basel - Rok 2019

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  • Discrete-continuous optimisation of an axial flow blood pump

    Publikacja

    - Journal of Physics : Conference Series - Rok 2018

    This paper presents results of discrete-continuous optimisation of an axial flow blood pump. Evolution Strategies (ES) are used as a global optimisation method in order to localise the optimal solution in relatively short time. The whole optimisation process is fully automated. This also applies to geometry modelling. Numerical simulations of the flow inside the pump is performed by means of the Reynolds-Average Navier-Stokes...

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  • Multiscale model for blood flow after a bileaflet artificial aortic valve implantation

    Publikacja

    - COMPUTERS IN BIOLOGY AND MEDICINE - Rok 2023

    Cardiovascular diseases are the leading cause of mortality in the world, mainly due to atherosclerosis and its consequences. The article presents the numerical model of the blood flow through artificial aortic valve. The overset mesh approach was applied to simulate the valve leaflets motion and to realize the moving mesh, in the aortic arch and the main branches of cardiovascular system. To capture the cardiac system’s response...

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