Searched for: subject:"geometrie"
(1 - 20 of 114)

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Naeimi, M. (author)
Rolling contact fatigue (RCF) is an important form of damage in wheels and rails that typically has surface and subsurface cracks. Squats are one of the major RCF defects that occur in the running band of rails and can create high dynamic forces and cause rail fracture if they are not detected and treated in time. In the current research, three...
doctoral thesis 2020
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Shahani, Amir Reza (author), Shakeri, Iman (author), Rans, C.D. (author)
Redistribution of residual stress during crack growth in butt welded joint of Al5083-H111 was studied. Furthermore, the effect of post weld heat treatment and removing the weld reinforcements on fatigue crack growth rate was investigated. Three dimensional simulations of welding process and fatigue crack growth were conducted. It was shown...
journal article 2020
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Gijswijt, D.C. (author), Smit, Harry J. (author), van der Wegen, Marieke (author)
There are several notions of gonality for graphs. The divisorial gonality dgon(G) of a graph G is the smallest degree of a divisor of positive rank in the sense of Baker-Norine. The stable gonality sgon(G) of a graph G is the minimum degree of a finite harmonic morphism from a refinement of G to a tree, as defined by Cornelissen, Kato and Kool....
journal article 2020
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Echaroj, Snunkhaem (author), Ong, Hwai Chyuan (author), Chen, X. (author)
Bioethanol synthesis techniques have been studied intensively due to the energy crisis and various environmental concerns. A two-step bioethanol production process was carried out multiple times in an unbaffled agitator tank. The parameters varied, including the fermentation temperature, the pH level, the amount of yeast, and the impeller type....
journal article 2020
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Karaiskou, Antigoni (author), Turrin, M. (author), Tenpierik, M.J. (author)
Speech intelligibility is crucial in many spaces, yet designers often fail to predict the acoustic shortcomings of certain design choices. This paper builds on the potential of hybrid surface treatments showcasing low-frequency absorption to control background noise levels and high-frequency diffusion to improve speech-in-noise perception to...
conference paper 2020
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Zhu, Z. (author), la Rocca, G. (author), Zheng, Yao (author), Chen, Jianjun (author)
Routing design of aircraft Electrical Wiring Interconnection System (EWIS) is time-consuming and error-prone. A solution, which automatically routes the EWIS inside the aircraft Digital MockUp (DMU), has been proposed and presented in the previous publications. The DMU, however, includes over-detailed features, which hardly influence the...
journal article 2020
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Zaccà, V.G. (author), Martínez-Nuevo, Pablo (author), Møller, Martin Bo (author), Martinez, Jorge (author), Heusdens, R. (author)
Accurate sound field reproduction in rooms is often limited by the lack of knowledge of the room characteristics. Information about the room shape or nearby reflecting boundaries can, in principle, be used to improve the accuracy of the reproduction. In this paper, we propose a method to infer the location of nearby reflecting boundaries from...
conference paper 2020
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Krijnen, T.F. (author), Noardo, F. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
The Industry Foundation Classes are a prevalent open standard to exchange Building Information Models. In such a model, geometric representations are provided for individual building elements along with semantic information, including a significant amount of properties related togeometry and explicit topological relationships. These...
conference paper 2020
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Luttun, Johan (author), Krijnen, T.F. (author)
The Industry Foundation Classes (IFC) cover a wide variety of subdomains in the construction industry. Model View Definitions (MVD) enable to specify a subset of the IFC schema to assess the content of a model for specific use cases and information exchanges. However, IFC and MVD paradoxically complexify the workflow since it requires a deep...
conference paper 2020
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Yang, Jinxin (author), Wong, Man Sing (author), Ho, Hung Chak (author), Krayenhoff, E. Scott (author), Chan, P. W. (author), Abbas, Sawaid (author), Menenti, M. (author)
The complete surface temperature (T<sub>c</sub>) in urban areas, defined as the mean temperature of the total active surface area, is an important variable in urban micro-climate research, specifically for assessment of the urban surface energy balance. Since most vertically-oriented building facets are not observed by a nadir-viewing remote...
journal article 2020
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Devriendt, Karel (author), Van Mieghem, P.F.A. (author)
Graphs are a central object of study in various scientific fields, such as discrete mathematics, theoretical computer science and network science. These graphs are typically studied using combinatorial, algebraic or probabilistic methods, each of which highlights the properties of graphs in a uniqueway. Here, we discuss a novel approach to study...
review 2019
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Brandt, C. (author)
The research field of geometry processing is concerned with the representation, analysis, modeling, simulation and optimization of geometric data. In this thesis, we introduce novel techniques and efficient algorithms for problems in geometry processing, such as the modeling and simulation of elastic deformable objects, the design of tangential...
doctoral thesis 2019
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Iannini, L. (author), Mancinelli, A. (author), Lopez Dekker, J.F. (author), Hoogeboom, P. (author), Li, Y. (author), Uysal, Faruk (author), Yarovoy, Alexander (author)
The work investigates staggered and randomic PRF strategies for a close formation of small SAR satellites operating in a multistatic configuration. The satellites are positioned within a fraction of the along-track critical baseline, hence allowing for the application of Displaced Phase Center image formation approaches. The performance of...
conference paper 2019
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Grazioli, D. (author), Zadin, Vahur (author), Brandell, Daniel (author), Simone, A. (author)
We study the effect of mechanical stresses arising in solid polymer electrolytes (SPEs) on the electrochemical performance of lithium-ion (Li-ion) solid-state batteries. Time-dependent finite element analyses of interdigitated plate cells during a discharge process are performed with a constitutive model that couples ionic conduction within the...
journal article 2019
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Yang, Jinxin (author), Menenti, M. (author), Krayenhoff, E. Scott (author), Wu, Zhifeng (author), Shi, Qian (author), Ouyang, Xiaoying (author)
Sensible heat exchange has important consequences for urban meteorology and related applications. Directional radiometric surface temperatures of urban canopies observed by remote sensing platforms have the potential to inform estimations of urban sensible heat flux. An imaging radiometer viewing the surface from nadir cannot capture the...
journal article 2019
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Callens, S.J.P. (author), Tümer, N. (author), Zadpoor, A.A. (author)
Origami-inspired folding methods present novel pathways to fabricate three-dimensional (3D) structures from 2D sheets. A key advantage of this approach is that planar printing and patterning processes could be used prior to folding, affording enhanced surface functionality to the folded structures. This is particularly useful for 3D lattices,...
journal article 2019
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Yang, M. (author), Lopez Dekker, J.F. (author), Dheenathayalan, P. (author), Biljecki, Filip (author), Liao, Mingsheng (author), Hanssen, R.F. (author)
Persistent scatterers (PSs) are coherent measurement points obtained from time series of satellite radar images, which are used to detect and estimate millimeter-scale displacements of the terrain or man-made structures. However, associating these measurement points with specific physical objects is not straightforward, which hampers the...
journal article 2019
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Arkesteijn, L. (author), Blom, A. (author), Czapiga, Matthew J. (author), Chavarrias Borras, V. (author), Labeur, R.J. (author)
An engineered alluvial river (i.e., a fixed-width channel) has constrained planform but is free to adjust channel slope and bed surface texture. These features are subject to controls: the hydrograph, sediment flux, and downstream base level. If the controls are sustained (or change slowly relative to the timescale of channel response), the...
journal article 2019
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Chen, J. (author), Ye, G. (author)
Cracking is inevitable during the service period of concrete structures. They are preferential ingression channels for aggressive ions. It is difficult or even impossible to repair all the cracks due to the limitation of practical conditions. However, cracks have potentials to self-heal due to further hydration and carbonization. The effect of...
journal article 2019
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Wei, Mingqiang (author), Tian, Yang (author), Pang, Wai-Man (author), Wang, C.C. (author), Pang, Ming-Yong (author), Wang, Jun (author), Qin, Jin (author), Heng, Pheng-Ann (author)
Bas-relief is characterized by its unique presentation of intrinsic shape properties and/or detailed appearance using materials raised up in different degrees above a background. However, many bas-relief modeling methods could not manipulate scene details well. We propose a simple and effective solution for two kinds of bas-relief modeling (i...
journal article 2019
Searched for: subject:"geometrie"
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