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Campero Jurado, I. (author), Lorato, I. (author), Morales, J. (author), Fruytier, L. (author), Stuart, S. (author), Panditha, P. (author), Janssen, D. (author), Rossetti, N. (author), Uzunbajakava, N. (author), Serban, I. (author), Rikken, L. (author), de Kok, M. (author), Vanschoren, J. (author), Brombacher, A. (author)Cardiovascular diseases (CVD) represent a serious health problem worldwide, of which atrial fibrillation (AF) is one of the most common conditions. Early and timely diagnosis of CVD is essential for successful treatment. When implemented in the healthcare system this can ease the existing socio-economic burden on health institutions and...article 2023
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Pantos, C. (author), Hildmann, H. (author), Valente, J. (author)This study aims to explore the communication capabilities for video crucial applications of two commercial drones—the Parrot AR.Drone 2.0 and the Parrot Anafi—in a greenhouse environment. Experiments were conducted on Received Signal Strength (RSS), Round-Trip Time (RTT) and the throughput on 802.11n at the 2.4 GHz network. From the experiments,...article 2023
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de Jong, J.C.B.C. (author), Attema, B.J. (author), van der Hoek, M.D. (author), Verschuren, L. (author), Caspers, M.P.M. (author), Kleemann, R. (author), van der Leij, F.R. (author), van den Hoek, A.M. (author), Nieuwenhuizen, A.G. (author), Keijer, J. (author)Sex differences in muscle aging are poorly understood, but could be crucial for the optimization of sarcopenia-related interventions. To gain insight into potential sex differences in muscle aging, we recruited young (23 ± 2 years, 13 males and 13 females) and old (80 ± 3.5 years, 28 males and 26 females) participants. Males and females in both...article 2023
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He, Y. (author), Coutino, M. (author), Isufi, E. (author), Leus, G. (author)In this work, we focus on partitioning dynamic graphs with two types of nodes (bi-colored), though not necessarily bipartite graphs. They commonly appear in communication network applications, e.g., one color being base stations, the other users, and the dynamic process being the varying connection status between base stations and moving users....conference paper 2022
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), Pertijs, M.A.P. (author), de Jong, N. (author), Verweij, M.D. (author)Ultrasonic flow meters (UFMs) based on transducer arrays offer several advantages. With electronic beam steering, it is possible to tune the steering angle of the beam for optimal signal-tonoise ratio (SNR) upon reception. Moreover, multiple beams can be generated to propagate through different travel paths, covering a wider section of the flow...article 2022
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Shimura, T. (author), Sato, S. (author), Zalar, P. (author), Matsuhisa, N. (author)Wearable technologies are becoming important for the fields of information technology and healthcare, driven mainly by societal issues such as the aging society and the current pandemic. Recently developed flexible/stretchable wearable devices have demonstrated their ability for long-term healthcare monitoring with improved signal integrity and...article 2022
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Bui, T.C. (author), Singh, R. (author), OFarrell, T. (author), Scarano, G. (author), David, J.P.R. (author), Biagi, M. (author)Multi-primary modulation scheme has the potential to provide robust visible light communication links and mitigate any color fluctuations by providing identical chromaticity modulation alphabets. This work describes constellation optimization technique for multi-primary modulation (MPM), which shows that using different power levels for the...article 2022
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de Martín, L. (author), van Rossum, W. (author)Doppler ambiguities can be avoided by transmitting a burst with irregular pulse intervals and processing it with sparse reconstruction on receive. Furthermore, the time interval for each individual pulse can be optimized to maximize the recovery success. In this line, this work investigates the optimization of pulse intervals for unambiguous...conference paper 2022
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Coutino, M. (author), Uysal, F. (author), Anitori, L. (author)This paper introduces a general framework for waveform-aware optimal window design for mismatch processing. First, the linear relationship between the window function and the output of the mismatch filter, for both frequency and time windowing and a particular waveform, is modeled. Making use of such a relation, typical window constraints are...conference paper 2022
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Natali, A. (author), Isufi, E. (author), Coutino Minguez, M.A. (author)This work proposes an algorithmic framework to learn time-varying graphs from online data. The generality offered by the framework renders it model-independent, i.e., it can be theoretically analyzed in its abstract formulation and then instantiated under a variety of model-dependent graph learning problems. This is possible by phrasing (time...article 2022
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Kokke, C.A. (author), Coutino Minguez, M.A. (author), Heusdens, R. (author), Leus, G. (author), Antori, L. (author)Doppler velocity estimation in pulse-Doppler radar is done by evaluating the target returns of bursts of pulses. While this provides convenience and accuracy, it requires multiple pulses. In adaptive and cognitive radar systems, the ability to adapt on consecutive pulses, instead of bursts, brings potential performance benefits. Hence, with...conference paper 2022
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Korevaar, C.W. (author), Boschma, J.J. (author), den Breeje, R. (author), Ebert, J. (author)Optical feeder links (OFLs) benefit from the vast amount of bandwidth available in the THz-regime of the electro-magnetic spectrum, and could enable future terabit-per-second satellite systems. This study assesses the end-to-end performance of analog coherent OFLs for digital video broadcasting (DVB) applications, employing phase modulation (PM)...conference paper 2022
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Bekers, D.J. (author)In this paper we revisit and generalize the Multi-Tone Sinusoidal Frequency Modulation (MTSFM), which has been used in the past decade for various Radar and Sonar applications including optimal transmit waveform design, modelling non-linear frequency modulation, high-duty cycle sensors . In its original form, the MTSFM describes a phase...conference paper 2022
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van Walree, P.A. (author), Colin, M.E.G.D. (author)A channel sounding and communications experiment was performed in the Oslofjord, using eight bottom-mounted instrument units deployed in a network configuration. Five units were equipped with a software-defined 4–8-kHz acoustic modem, programmed to transmit probe signals and communication packets in a round-robin fashion. All transmitted...article 2022
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Wezeman, R.S. (author), Chiscop, I. (author), Anitori, L. (author), van Rossum, W.L. (author)Compressive sensing is a signal processing technique used to acquire and reconstruct sparse signals using significantly fewer measurement samples. Compressive sensing requires finding the most sparse solution to an underdetermined linear system, which is an NP-hard problem and as a consequence in practise is only solved approximately. In our...conference paper 2022
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Detterer, P. (author), Nabi, M. (author), Jiao, H. (author), Basten, T. (author)The energy efficiency of an Internet of Things (IoT) receiver can be improved by introducing an adjustable tradeoff between signal quality and energy consumption. In good channel conditions, the receiver can be set to consume less energy per bit, without compromising signal quality in bad channel conditions. We propose a system-level receiver...article 2022
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Burggraaf, J. (author), Groeneweg, J. (author), Sillem, S. (author), van Gelder, P. (author)When a train passes a red aspect, this is called a Signal Passed at Danger event or SPAD. Sometimes it is easy to identify the SPAD cause but in other cases it is unclear why the incident occurred, especially if the system operated as usual and the train driver was trained and experienced just like his or her colleagues. In previous research,...article 2022
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Giordano, L. (author), Mihaila, S.M. (author), Eslami Amirabadi, H. (author), Masereeuw, R. (author)Chronic kidney disease (CKD) typically appears alongside other comorbidities, highlighting an underlying complex pathophysiology that is thought to be vastly modulated by the bidirectional gut–kidney crosstalk. By combining advances in tissue engineering, biofabrication, microfluidics, and biosensors, microphysiological systems (MPSs) have...article 2021
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- Kurchaba, S. (author), van Vliet, J. (author), Meulman, J.J. (author), Verbeek, F.J. (author), Veenman, C.J. (author) conference paper 2021
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Natali, A. (author), Isufi, E. (author), Coutino, M. (author), Leus, G. (author)Topology identification is an important problem across many disciplines, since it reveals pairwise interactions among entities and can be used to interpret graph data. In many scenarios, however, this (unknown) topology is time-varying, rendering the problem even harder. In this paper, we focus on a time-varying version of the structural...conference paper 2021