Ekaterina Kutafina

Dr. Ekaterina Kutafina

Uniklinik RWTH Aachen, Aachen, Germany
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Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 March 2014 in Journal of Dynamics and Differential Equations
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PMP. De Maesschalck
P. De Maesschalck
EKEkaterina Kutafina
Ekaterina Kutafina
NPNikola Popović
Nikola Popović

3 August 2016 in Sensors
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EKEkaterina Kutafina
Ekaterina Kutafina
DLDavid Laukamp
David Laukamp
RBRalf Bettermann
Ralf Bettermann
USUlrik Schroeder
Ulrik Schroeder
SJStephan Jonas
Stephan Jonas
In this paper, we propose a novel approach to eLearning that makes use of smart wearable sensors. Traditional eLearning supports the remote and mobile learning of mostly theoretical knowledge. Here we discuss the possibilities of eLearning to support the training of manual skills. We employ forearm armbands with inertial measurement units and surface electromyography sensors to detect and analyse the user’s hand motions and evaluate their performance. Hand hygiene is chosen as the example activity, as it is a highly standardized manual task that is often not properly executed. The World Health Organization guidelines on hand hygiene are taken as a model of the optimal hygiene procedure, due to their algorithmic structure. Gesture recognition procedures based on artificial neural networks and hidden Markov modeling were developed, achieving recognition rates of 98 . 30 % ( ± 1 . 26 % ) for individual gestures. Our approach is shown to be promising for further research and application in the mobile eLearning of manual skills.

7 March 2019 in BMC Medical Informatics and Decision Making
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EKEkaterina Kutafina
Ekaterina Kutafina
IBIstvan Bechtold
Istvan Bechtold
KKKlaus Kabino
Klaus Kabino
SJStephan Jonas
Stephan Jonas
Efficient planning of hospital bed usage is a necessary condition to minimize the hospital costs. In the presented work we deal with the problem of occupancy forecasting in the scale of several months, with a focus on personnel’s holiday planning. We construct a model based on a set of recursive neural networks, which performs an occupancy prediction using historical admission and release data combined with external factors such as public and school holidays. The model requires no personal information on patients or staff. It is optimized for a 60 days forecast during the summer season (May–September). An average mean absolute percentage error (MAPE) of 6.24% was computed on 8 validation sets. The proposed machine learning model has shown to be competitive to standard time-series forecasting models and can be recommended for incorporation in medium-size hospitals automatized scheduling and decision making.

31 July 2021 in Sensors
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EKEkaterina Kutafina
Ekaterina Kutafina
AHAnne Heiligers
Anne Heiligers
RPRadomir Popovic
Radomir Popovic
ABAlexander Brenner
Alexander Brenner
BHBernd Hankammer
Bernd Hankammer
JZJana Zweerings
Jana Zweerings
The aim of the present investigation was to assess if a mobile electroencephalography (EEG) setup can be used to track mental workload, which is an important aspect of learning performance and motivation and may thus represent a valuable source of information in the evaluation of cognitive training approaches. Twenty five healthy subjects performed a three-level N-back test using a fully mobile setup including tablet-based presentation of the task and EEG data collection with a self-mounted mobile EEG device at two assessment time points. A two-fold analysis approach was chosen including a standard analysis of variance and an artificial neural network to distinguish the levels of cognitive load. Our findings indicate that the setup is feasible for detecting changes in cognitive load, as reflected by alterations across lobes in different frequency bands. In particular, we observed a decrease of occipital alpha and an increase in frontal, parietal and occipital theta with increasing cognitive load. The most distinct levels of cognitive load could be discriminated by the integrated machine learning models with an accuracy of 86%.

1 February 2020 in Epilepsy & Behavior
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YTYannic Titgemeyer
Yannic Titgemeyer
RSRainer Surges
Rainer Surges
DADirk-Matthias Altenmüller
Dirk-Matthias Altenmüller
SFSusanne Fauser
Susanne Fauser
AKAlbrecht Kunze
Albrecht Kunze
SJStephan Jonas
Stephan Jonas

8 January 2014 in Computational and Applied Mathematics
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EKEkaterina Kutafina
Ekaterina Kutafina
Following the paper of Shimizu et al. (Phys Lett A 375:1566, 2011), we consider the Bonhoeffer-van der Pol oscillator with non-autonomous periodic perturbation. We show that the presence of mixed mode oscillations reported in that paper can be explained using the geometric singular perturbation theory. The considered model can be re-written as a four-dimensional (locally three-dimensional) autonomous system, which under certain conditions has a folded saddle-node singularity and additionally can be treated as a three time scale one.