- document
-
Savazzi, A.C.M. (author), Nuijens, Louise (author), De Rooy, Wim (author), Janssens, M. (author), Siebesma, A.P. (author)This study investigates momentum transport in shallow cumulus clouds as simulated with the Dutch Atmospheric Large Eddy Simulation (DALES) for a 150 3 150 km2 domain east of Barbados during 9 days of EUREC4A. DALES is initialized and forced with the mesoscale weather model HARMONIE-AROME and subjectively reproduces observed cloud patterns....journal article 2024
- document
-
Deen, Elise (author), van Iersel, L.J.J. (author), Janssen, Remie (author), Jones, M.E.L. (author), Murakami, Yukihiro (author), Zeh, Norbert (author)The maximum parsimony distance d<sub>MP</sub>(T<sub>1</sub>,T<sub>2</sub>) and the bounded-state maximum parsimony distance d<sub>MP</sub><sup>t</sup>(T<sub>1</sub>,T<sub>2</sub>) measure the difference between two phylogenetic trees T<sub>1</sub>,T<sub>2</sub> in terms of the maximum difference between their parsimony scores for any...journal article 2024
- document
-
Sun, D. (author), Jamshidnejad, A. (author), De Schutter, B.H.K. (author)Traffic control is essential to reduce congestion in both urban and freeway traffic networks. These control measures include ramp metering and variable speed limits for freeways, and traffic signal control for urban traffic. However, current traffic control methods are either too simple to respond to complex traffic environment, or too...journal article 2023
- document
-
Ji, Y. (author), Chen, K. (author), Möller, M. (author), Vuik, Cornelis (author)Constructing an analysis-suitable parameterization for the computational domain from its boundary representation plays a crucial role in the isogeometric design-through-analysis pipeline. PDE-based elliptic grid generation is an effective method for generating high-quality parameterizations with rapid convergence properties for the planar...journal article 2023
- document
-
Hoffmann, Fabian (author), Glassmeier, F. (author), Yamaguchi, Takanobu (author), Feingold, Graham (author)Stratocumulus occur in closed- or open-cell states, which tend to be associated with high or low cloud cover and the absence or presence of precipitation, respectively. Thus, the transition between these states has substantial implications for the role of this cloud type in Earth’s radiation budget. In this study, we analyze transitions between...journal article 2023
- document
-
Basdurak, N. Berkay (author), Burchard, Hans (author), Schuttelaars, H.M. (author)Structure and intensity of estuarine exchange flow depend significantly on the eddy viscosity A<sub>v</sub> profile which is dynamically linked to various forces (e.g., gravitational, tidal, wind-driven). The impact of winds on the exchange flow is complex due to its direct (local and remote changes in shear and density stratification) and...journal article 2023
- document
-
Bentert, Matthias (author), Schestag, J. (author), Sommer, Frank (author)We study a generalization of the classic Spanning Tree problem that allows for a non-uniform failure model. More precisely, edges are either safe or unsafe and we assume that failures only affect unsafe edges. In Unweighted Flexible Graph Connectivity we are given an undirected graph G = (V,E) in which the edge set E is partitioned into a set...conference paper 2023
- document
-
Jones, M.E.L. (author), Schestag, J. (author)Phylogenetic Diversity (PD) is a measure of the overall biodiversity of a set of present-day species (taxa) within a phylogenetic tree. We consider an extension of PD to phylogenetic networks. Given a phylogenetic network with weighted edges and a subset S of leaves, the all-paths phylogenetic diversity of S is the summed weight of all edges...conference paper 2023
- document
-
Garvardt, Jaroslav (author), Renken, Malte (author), Schestag, J. (author), Weller, Mathias (author)We consider the problem of orienting a given, undirected graph into a (directed) acyclic graph such that the in-degree of each vertex ν is in a prescribed list λ(ν). Variants of this problem have been studied for a long time and with various applications, but mostly without the requirement for acyclicity. Without this requirement, the problem...conference paper 2023
- document
-
Jeschke, J.M. (author), Sun, D. (author), Jamshidnejad, A. (author), De Schutter, B.H.K. (author)While Model Predictive Control (MPC) is a promising approach for network-wide control of urban traffic, the computational complexity of the, often nonlinear, online optimization procedure is too high for real-time implementations. In order to make MPC computationally efficient, this paper introduces a parameterized MPC (PMPC) approach for...journal article 2023
- document
-
Markovich, L. (author), Migliore, Agostino (author), Messina, Antonino (author)We introduce the concept of the almost-companion matrix (ACM) by relaxing the non-derogatory property of the standard companion matrix (CM). That is, we define an ACM as a matrix whose characteristic polynomial coincides with a given monic and generally complex polynomial. The greater flexibility inherent in the ACM concept, compared to CM,...journal article 2023
- document
-
Borst, Sander (author), van Iersel, L.J.J. (author), Jones, M.E.L. (author), Kelk, Steven (author)We study the problem of finding a temporal hybridization network containing at most k reticulations, for an input consisting of a set of phylogenetic trees. First, we introduce an FPT algorithm for the problem on an arbitrary set of m binary trees with n leaves each with a running time of O(5 <sup>k</sup>· n· m). We also present the concept...journal article 2022
- document
-
Bulteau, Laurent (author), Jones, M.E.L. (author), Niedermeier, Rolf (author), Tantau, Till (author)In the NP-hard Longest Common Subsequence problem (LCS), given a set of strings, the task is to find a string that can be obtained from every input string using as few deletions as possible. LCS is one of the most fundamental string problems with numerous applications in various areas, having gained a lot of attention in the algorithms and...conference paper 2022
- document
-
Ojo, Adebayo (author), Collu, Maurizio (author), Coraddu, A. (author)The development of novel energy technologies to meet net zero carbon emission is essential in the provision of solutions to realize an increasing worldwide demand for renewable energy. Floating Offshore Wind Turbine (FOWT) is one of the emerging technologies to exploit the vast wind resources available in deep waters within the offshore wind...review 2022
- document
-
Krishna, Shankaranarayanan (author), Godbole, Adwait (author), Meyer, Roland (author), Chakraborty, S.S. (author)We study the safety verification problem for parameterized systems under the release-acquire (RA) semantics. In the non-parameterized setting, access to atomic compare-and-swap (CAS) instructions renders the safety verification problem undecidable. In the light of this result, we consider parameterized systems consisting of an unbounded...conference paper 2022
- document
-
Ojo, Adebayo (author), Collu, Maurizio (author), Coraddu, A. (author)The development of novel energy technologies is considered imperative in the provision of solutions to meet an increasing global demand for clean energy. Floating Offshore Wind Turbine (FOWT) is one of the emerging technologies to exploit the vast wind resources available in deeper waters. To lower the levelized cost of energy (LCOE) or...journal article 2022
- document
-
Xiao, C. (author)In the community of petroleum engineering, the use of surrogate modelling techniques have recently gained more and more popularity to improve the efficiency of history matching. However, it is still not possible to fully utilize their potential in realistic applications. One of the challenges is to retain high accuracy while increasing the...doctoral thesis 2021
- document
-
Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A.W. (author)Imaging-type monitoring techniques are used in monitoring dynamic processes in many domains, including medicine, engineering, and geophysics. This paper aims to propose an efficient workflow for application of such data for the conditioning of simulation models. Such applications are very common in e.g. the geosciences, where large-scale...journal article 2021
- document
-
Wei, X. (author), Urbach, Paul (author), van der Walle, Peter (author), Coene, W.M.J.M. (author)We present a parameter retrieval method which incorporates prior knowledge about the object into ptychography. The proposed method is applied to two applications: (1) parameter retrieval of small particles from Fourier ptychographic dark field measurements; (2) parameter retrieval of a rectangular structure with real-space ptychography. The...journal article 2021
- document
-
Speleers, Hendrik (author), Toshniwal, D. (author)In this paper, we describe a general class of C<sup>1</sup> smooth rational splines that enables, in particular, exact descriptions of ellipses and ellipsoids — some of the most important primitives for CAD and CAE. The univariate rational splines are assembled by transforming multiple sets of NURBS basis functions via so-called design...journal article 2021