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Campolattaro, Jackson (author)The n-body problem is the simulation of pair-wise interactions between n objects. This problem appears in many forms, with the classic example being the modeling of gravitational forces between point masses, necessary for cosmological simulations. Many approximation approaches have been devised to reduce the complexity of this problem.<br/><br/...master thesis 2023
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Papadogianni, Maria (author)This report presents the process of designing a volume unit as an addition to the current product system, which will allow the user to control boiling, chilled and carbonated water volumes. This assignment tackles both the user interaction that takes place around the tap over the counter, as well as the functionality and technology implemented...master thesis 2023
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Skarka, Michał (author)The concept of lightweight design is driving future aircraft to exploit all the available strength of materials and further reduce the weight of an aircraft leading to lower fuel consumption and more sustainable aviation. Current designs introduce rivets and bolts to join the structure and simultaneously create holes in the pristine material,...master thesis 2023
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Zwarts, Sijmen (author)The first part of the thesis explores the process of homogenization, particularly for the permeability properties of rock samples. The Hill-Mandel postulate of energy consistency throughout the transitioning of scales is revisited since traditional homogenization methods rely on applying specific boundary conditions to enforce energy consistency...master thesis 2023
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van der Eijk, M. (author), Wellens, P.R. (author)The numerical prediction of two-phase flows with an interface is challenging, to a considerable extent because of the high density ratio at the interface. Numerical results become affected by momentum losses, diverging spurious interface velocities, free surface distortion, and even numerical instability. To prevent issues like these,...journal article 2023
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Buist, J.F.H. (author), Sanderse, Benjamin (author), Dubinkina, Svetlana (author), Oosterlee, C.W. (author), Henkes, R.A.W.M. (author)The pressure-free two-fluid model (PFTFM) is a recent reformulation of the one-dimensional two-fluid model (TFM) for stratified incompressible flow in ducts (including pipes and channels), in which the pressure is eliminated through intricate use of the volume constraint. The disadvantage of the PFTFM was that the volumetric flow rate had to...journal article 2023
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Venugopal, Krishnapriya (author), Arzanforoosh, Fatemeh (author), van Dorth, Daniëlle (author), Smits, M. (author), van Osch, Matthias J.P. (author), Hernandez-Tamames, J.A. (author), Warnert, E.A.H. (author), Poot, Dirk H.J. (author)Characterization of tumor microvasculature is important in tumor assessment and studying treatment response. This is possible by acquiring vascular biomarkers with magnetic resonance imaging (MRI) based on dynamic susceptibility contrast (DSC). We propose magnetic resonance vascular fingerprinting (MRVF) for hybrid echo planar imaging (HEPI)...journal article 2023
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Sramko, Marek (author), Abdel-Kafi, Saif (author), Wijnmaalen, Adrianus P. (author), Tao, Q. (author), van der Geest, R.J. (author), Lamb, Hildo J. (author), Zeppenfeld, Katja (author)Background: Electroanatomical voltage mapping (EAVM) has been compared with late gadolinium enhancement cardiovascular magnetic resonance (LGE-CMR), which cannot delineate diffuse fibrosis. T1-mapping CMR overcomes the limitations of LGE-CMR, but it has not been directly compared against EAVM. Objectives: This study aims to assess the...journal article 2023
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Su, Ruisheng (author), van der Sluijs, P. Matthijs (author), Bobi, Joaquim (author), Taha, Aladdin (author), van Beusekom, Heleen M.M. (author), van der Lugt, Aad (author), Niessen, W.J. (author), Ruijters, Danny (author), van Walsum, T. (author)Background: X-ray digital subtraction angiography (DSA) is the imaging modality for peri-procedural guidance and treatment evaluation in (neuro-) vascular interventions. Perfusion image construction from DSA, as a means of quantitatively depicting cerebral hemodynamics, has been shown feasible. However, the quantitative property of perfusion...journal article 2023
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Tripuraneni, S. R. T. (author), Novikov, A. (author), Voskov, D.V. (author)Elliptic differential operators describe a wide range of processes in mechanics relevant to geo-energy applications. Extensively used in reservoir modeling, the Finite Volume Method with TPFA can be consistently applied to discretize only a specific type of application under severe assumptions. In this paper, we introduce a positivity...journal article 2023
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Zheng, X. (author), Seaid, Mohammed (author), Pisano, F. (author), Hicks, M.A. (author), Vardon, P.J. (author), Huvaj, Nejan (author), Osman, Ashraf S. (author)A hybrid material point/finite volume method for the numerical simulation of shallow water waves caused by large dynamic deformations in the bathymetry is presented. The proposed model consists of coupling the nonlinear shallow water equations for the water flow and a dynamic elastoplastic system for the seabed deformation. As a constitutive...journal article 2023
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Liu, Lingya (author), Hua, Cunqing (author), Xu, Jing (author), Leus, G.J.T. (author), Wang, Yiyin (author)This article focuses on greedy approaches to select the most informative k sensors from N candidates to maximize the Fisher information, i.e., the determinant of the Fisher information matrix (FIM), which indicates the volume of the information ellipsoid (VIE) constructed by the FIM. However, it is a critical issue for conventional greedy...journal article 2023
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Theulings, M.J.B. (author), Langelaar, Matthijs (author), van Keulen, A. (author), Maas, Robert (author)Modeling of fluid flows in density-based topology optimization forms a longstanding challenge. Methods based on the Navier–Stokes equations with Darcy penalization (NSDP equations) are widely used in fluid topology optimization. These methods use porous materials with low permeability to represent the solid domain. Consequently, they suffer...journal article 2023
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Vijai Kumar, S. (author), Vuik, Cornelis (author), Möller, M. (author)Various computational fluid dynamic simulations in engineering, such as external aerodynamics, only need the silhouette of an input geometry. Often, it is a laborious process that can take up many human hours. In addition, the CAD geometries are too complex and contain intricate features and topological holes. We showcase an effortless way to...journal article 2023
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Liang, M. (author), Zhang, Y. (author), He, S. (author), Chen, Y. (author), Schlangen, E. (author), Šavija, B. (author)This study investigated the evolution process of high-volume slag cement (HVSC) paste from a chemo-mechanical standpoint. HVSC specimens with a 70 w.t. % slag replacement rate were studied at various ages. Evolution of phase assemblage, microstructure development, and micromechanical properties were analyzed using TGA/XRD/MIP/SEM-EDS and nano...journal article 2023
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van de Ruit, M. (author), Eisemann, E. (author)Spectral rendering is a crucial solution for photorealistic rendering. However, most available texture assets are RGB-only, and access to spectral content is limited. Uplifting methods that recover full spectral representations from RGB inputs have therefore received much attention. Yet, most methods are deterministic, while, in reality,...conference paper 2023
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Tseng, C. (author), Jaspers, Jaap (author), Romero, Alejandra Mendez (author), Wielopolski, Piotr (author), Smits, M. (author), van Osch, Matthias J.P. (author), Vos, F.M. (author)The arterial input function (AIF) plays a crucial role in estimating quantitative perfusion properties from dynamic susceptibility contrast (DSC) MRI. An important issue, however, is that measuring the AIF in absolute contrast-agent concentrations is challenging, due to uncertainty in relation to the measured (Formula presented.) -weighted...journal article 2023
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Lane, R. (author)Multi-modal imaging techniques have become essential for better understanding fundamental questions in cell biology such as disease progression. While individual microscopy methods have rapidly advanced in recent years, the information content of any one imaging technique is limited to the type of contrast that particular technique is sensitive...doctoral thesis 2022
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CHEN, ENPU (author)In inspection and display scenarios, reconstructing and rendering the entire surface of a building is a critical step in presenting the overall condition of the building. In building reconstruction, most works are based on point clouds because of their enhanced availability. In recent years, neural radiance fields (NeRF) have become a common...master thesis 2022
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Lambregts, Steven (author)Searchable Symmetric Encryption (SSE) schemes provide secure search over encrypted databases while allowing admitted information leakages. Generally, the leakages can be categorized into access, search, and volume pattern. In most existing Searchable Encryption (SE) schemes, these leakages are caused by practical designs but are considered an...master thesis 2022