Publicaties
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An Operational Characterization for Optimal Observation of Potential Properties in Quantum Theory and Signal Analysis Vrije Universiteit Brussel
Quantum logic introduced a paradigm shift in the axiomatization of quantum theory by looking directly at the structural relations between the closed subspaces of the Hilbert space of a system. The one dimensional closed subspaces correspond to testable properties of the system, forging an operational link between theory and experiment. Thus a property is called actual, if the corresponding test yields "yes" with certainty. We argue a truly ...
Cognitive Radios: Discriminant Analysis for Automatic Signal Detection in Measured Power Spectra Vrije Universiteit Brussel
Signal detection of primary users for cognitive radios enables spectrum use agility. In normal operation conditions, the sensed spectrum is nonflat, i.e., the power spectrum is not constant. A novel method proposes the segmentation of the measured spectra into regions where the flatness condition is approximately valid. As a result, an automatic detection of the significant spectral components together with an estimate of the magnitude of the ...
Novel methods of chaos detection of active magnetic bearing (AMB) system by signal analysis Vrije Universiteit Brussel
In this article the chaotic behavior of Active Magnetic Bearing is studied by two methods through their time series (signal). Besides the methods which are using for diagnosis of the chaotic behavior, the work presents an application of the embedding dimension concept. The embedding dimension can be used for estimating the order of the dynamical system.
Diffusion-compensated correlation analysis of frequency-modulated thermal signal for quantitative infrared thermography Universiteit Gent
Acceleration of Bucket-Assisted Fast Sample Entropy for Biomedical Signal Analysis Vrije Universiteit Brussel
Sample Entropy (SampEn) is widely used to assess the complexity of physiological time-series signals. However, it is a computationally intensive algorithm with O(N2) time complexity. Although algorithmic optimizations, such as Bucket-Assisted SampEn, have been proposed to eliminate unnecessary computations, the time demand restricts their use in real-time applications with long-term inputs. To address the time and space complexity issue in ...
Oscillometric Blood Pressure Measurements: a signal analysis Vrije Universiteit Brussel
In this paper, the oscillometric waveform measured by automatic non-invasive blood pressure meters (NIBP) is analyzed by transforming the data from the time domain to the frequency domain. The signal's spectrum of the oscillometric waveform is in current literature badly understood or explored. The only known link between the oscillometric waveform and the blood pressure is the maximum of the oscillometry's envelope equalling the mean arterial ...
Functional analysis and development of inhibitors of Staphylococcus epidermidis type I signal peptidases KU Leuven
De medische wereld ondervindt steeds meer problemen voor de behandeling van bacteriële infecties door het groeiend aantal multi-resistente bacte riën. Daarom is er een grote nood aan nieuwe klassen van antibacte riële middelen met een nieuw werkingsmechanisme om kruisresistentie met bestaande antibiotica te vermijden. Daarenboven vertonen bacteriën in een biofilm een verminderde antibioticagevoeligheid met als gevolg d at biofilm-gebaseerde ...
Obstructive Sleep Apnea Screening by Joint Saturation Signal Analysis and PPG-Derived Pulse Rate Oscillations KU Leuven
Obstructive sleep apnea (OSA) is a high-prevalence disease in the general population, often underdiagnosed. The gold standard in clinical practice for its diagnosis and severity assessment is the polysomnography, although in-home approaches have been proposed in recent years to overcome its limitations. Today's ubiquitously presence of wearables may become a powerful screening tool in the general population and pulse-oximetry-based techniques ...
Signal acquisition and analysis of ambulatory electromyographic recordings for the assessment of sleep bruxism: A scoping review KU Leuven
BACKGROUND: Ambulatory electromyographic (EMG) devices are increasingly being used in sleep bruxism studies. EMG signal acquisition, analysis and scoring methods vary between studies. This may impact comparability of studies and the assessment of sleep bruxism in patients. OBJECTIVES: (a) To provide an overview of EMG signal acquisition and analysis methods of recordings from limited-channel ambulatory EMG devices for the assessment of sleep ...