- document
-
van Buuren, S. (author)Many longitudinal studies collect data that have irregular observation times, often requiring the application of linear mixed models with time-varying outcomes. This paper presents an alternative that splits the quantitative analysis into two steps. The first step converts irregularly observed data into a set of repeated measures through the...article 2023
- document
-
Mulderij, J. (author), Aardal, K.I. (author), Chiscop, I. (author), Phillipson, F. (author)Due to the physics behind quantum computing, quantum circuit designers must adhere to the constraints posed by the limited interaction distance of qubits. Existing circuits need therefore to be modified via the insertion of SWAP gates, which alter the qubit order by interchanging the location of two qubits’ quantum states. We consider the...conference paper 2023
- document
-
Koppen, S. (author), van der Kolk, M. (author), van den Boom, S.J. (author)Real-world structural optimisation problems involve multiple loading conditions and design constraints, with responses typi cally depending on states of discretised governing equations. Generally, one uses gradient-based nested analysis and design approaches to solve these problems. Herein, solving both physical and adjoint problems dominates...article 2022
- document
-
Wagenvoort, M. (author), Bouman, P.C. (author), van Ee, M. (author), Lamballais Tessensohn, T. (author), Postek, K. (author)After a hurricane, for example hurricane Irma in Sint-Maarten, the navy can provide aid by bringing supplies, helping to clear roads and evacuating victims. If the destinations cannot be reached over land via a port, resources can be transported using smaller ships and helicopters, called connectors. This has to be done e_ciently so that the...conference paper 2022
- document
-
van Meer, M. (author), Witvoet, G. (author), Oomen, T. (author)Switched reluctance motors are appealing because they are inexpensive in both construction and maintenance. The aim of this paper is to develop a commutation function that linearizes the nonlinear motor dynamics in such a way that the torque ripple is reduced. To this end, a convex optimization problem is posed that directly penalizes torque...article 2022
- document
-
van der Ploeg, C. (author), Smit, R. (author), Teerhuis, A. (author), Silvas, E. (author)Developing safe automated vehicles that can be proactive, safe, and comfortable in mixed traffic requires improved planning methods that are risk-averse and that account for predictions of the motion of other road users. To consider these criteria, in this article, we propose a nonlinear model-predictive trajectory generator scheme, which...conference paper 2022
- document
-
Derkink, F.M. (author), Doelman, D. (author), van Dam, D. (author), Brenny, B.J.M. (author), Speet, B.G. (author), van Brug, H. (author), Keller, C. (author), Snik, F. (author)While the concentrations of trace gases in Earth’s atmosphere were roughly constant for thousands of years, human activities such as the burning of fossil fuels have caused significant changes ever since the industrial revolution. The remote sensing of trace gases has proved to be a useful technique for mapping and monitoring on the global scale...conference paper 2022
- document
-
Candela, T.G.G. (author), Chitu, A.G. (author), Peters, E. (author), Pluymaekers, M.P.D. (author), Hegen, D. (author), Koster, K. (author), Fokker, P.A. (author)Surface movement can be induced by many human subsurface activities: production of natural gas, geothermal heat extraction, ground water extraction, phreatic groundwater level lowering, storage of natural gas and CO2. In this manuscript, we focus on subsidence caused by gas production. While geological interpretations, seismic campaigns and flow...article 2022
- document
-
Li, L. (author), Hoefsloot, H. (author), de Graaf, A.A. (author), Acar, E. (author), Smilde, A.K. (author)Background: Analysis of dynamic metabolomics data holds the promise to improve our understanding of underlying mechanisms in metabolism. For example, it may detect changes in metabolism due to the onset of a disease. Dynamic or time-resolved metabolomics data can be arranged as a three-way array with entries organized according to a subjects...article 2022
- document
-
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
- document
-
Mirdad, M.A.H. (author), Jucutan, A. (author), Khan, R. (author), Niederwestberg, J. (author), Chui, Y.H. (author)In the construction of modern multi-storey mass timber structures, self-tapping screws are the preferred fasteners. In order the maximize the strength and stiffness of self-tapping screw connections, the screws are often inserted into timber members at an angle other than 90 degrees to the face of the member. With this fabrication preference,...article 2022
- document
-
Zhang, B. (author), Guo, C. (author), Lin, T. (author), Faaij, A.P.C. (author)Environmental factors, including greenhouse gas (GHG) emissions and soil organic carbon (SOC), should be considered when building a sustainable biofuel supply chain. This work developed a three-step optimization approach integrating a geographical information system-based mixed-integer linear programming model to economically optimize the...article 2022
- document
-
van der Eerden, F. (author), van den Berg, F. (author), van Heijningen, A. (author)Noise contours around military training areas are calculated by using: a) the measured source strength for the impulsive sources and b) the calculated sound propagation using a representative set of meteorological situations. For high-energy impulsive sounds the source strength is measured at distances beyond 100 meters, where peak levels are...conference paper 2022
- document
-
van der Ploeg, C. (author), Alirezaei, M. (author), van de Wouw, N. (author), Esfahani, P.M. (author)In this article, we propose a tractable nonlinear fault estimation filter along with explicit performance bounds for a class of linear dynamical systems in the presence of both additive and nonlinear multiplicative faults. We consider the case, where both faults may occur simultaneously and through an identical dynamical relationship, a setting...article 2022
- document
-
Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), de Jong, N. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author)Acoustic wave propagation in ultrasonic flow measurements is typically assumed to be linear and reciprocal.However, if the transmitting transducer generates a sufficiently high pressure, nonlinear wave propagation effects become significant. In flow measurements, this would translate into more information to estimate the flow and therefore a...article 2021
- document
-
Kim, Y. (author), Kim, Y. (author), Hwang, J. (author), van den Broek, T.J. (author), Oh, B. (author), Kim, J.Y. (author), Wopereis, S. (author), Bouwman, J. (author), Kwon, O. (author)Oxidative stress aggravates the progression of lifestyle-related chronic diseases. However, knowledge and practices that enable quantifying oxidative stress are still lacking. Here, we performed a proof-of-concept study to predict the oxidative stress status in a healthy population using retrospective cohort data from Boramae medical center in...article 2021
- document
- den Boef, P. (author), Cox, P.B. (author), Tóth, R. (author) conference paper 2021
- document
-
Morales España, G.A. (author), Martínez Gordón, R. (author), Sijm, J.P.M. (author)Demand response (DR) is expected to play a major role in integrating large shares of variable renewable energy (VRE) sources in power systems. For example, DR can increase or decrease consumption depending on the VRE availability, and use generating and network assets more efficiently. Detailed DR models are usually very complex, hence,...article 2021
- document
-
Abspoel, M. (author), Attema, T. (author), Rambaud, M. (author)We consider consensus protocols in the model that is most commonly considered for use in state machine replication, as initiated by Dwork-Lynch-Stockmeyer, then by Castro-Liskov in 1999 with “PBFT”. Such protocols guarantee, assuming n players out of which t < n/3 are maliciously corrupted, that the honest players output the same valid value...conference paper 2021
- document
-
Engen, M. (author), Hendriks, M.A.N. (author), Monti, G. (author), Allaix, D.L. (author)When non-linear finite element analyses are used in design of new or assessment of existing concrete structures, one should account for the modelling uncertainty before conclusions are drawn based on the results. The present article describes the basis for how this topic is treated in the draft of fib Model Code 2020. There are two components of...article 2021