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Wei, X. (author), Kumar, M. (author), Schuttelaars, H.M. (author)Along-channel and cross-channel sediment transport in tidal estuaries is usually driven by tides, density gradients, Coriolis’s force, wind stress, channel curvature and bathymetric variations. Since the water motion is influenced by density-induced gravitational circulation which in turn affects the salinity distribution, the coupled water...abstract 2016
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Wei, L. (author), Haije, W.G. (author), Grénman, Henrik (author), de Jong, W. (author)Hydrogen produced by the electrolysis of water using sustainable electricity will play an increasingly important role as an energy and a feedstock vector. Shifting from fossil to renewable resources means that new industrial platforms have to be set up to provide carbon-based fuels and bulk base chemicals to replace the current fossil...book chapter 2022
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Wei, Dai (author), Meyer, Han (author), Kuzniecow Bacchin, T. (author)The transformation of Pearl River Delta (PRD) is characterized by a complex layering, spatial and temporal differentiation. Its complexity is not only caused by interactions between multiple layers like blue-green spatial structure and urban spatial structure, but also caused by the interactions of several large sub-regions that are mutually...book chapter 2023
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Liu, X.X. (author), Hayton, D.J. (author), Luo, Y.C. (author), Wei, L. (author), Vercruyssen, N. (author), Gao, J.R. (author), Groppi, C. (author)We report on realization of a 2 × 2 NbN hot electron bolometer (HEB) array receiver using multiple local oscillator (LO) beams that are obtained from a Fourier phase grating mirror. The grating splits a 1.4 THz single beam into four uniform sub-beams. Two 50mm lenses are applied to collimate each beam in order to achieve a spacing of 12mm...conference paper 2015
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Li, J. (author), Van Zuylen, H.J. (author), Wei, G. (author)Traffic volume and queue length are two important variables to identify traffic states in urban areas. Loop detectors are often used for monitoring traffic. A prominent weakness of loop detector data is the limited reliability due to equipment malfunctions and communication faults. This paper presents a method to identify the validity of loop...conference paper 2014
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- Sauvage, L.L.F. (author), Sangari, A. (author), Sethares, W. (author), Martinez, M.J. (author), Wei, W. (author) conference paper 2015
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Jiang, S. (author), Li, D. (author), Wei, B. (author)The effect of probability distributions on the slope reliability is highlighted in this study since the lognormal distribution is often used to characterize the variability of soil properties to avoid negative values. A multiple response-surface based MCS method for slope reliability analysis in spatially variable soils is proposed. A...conference paper 2015
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- Sauvage, L.L.F. (author), Martinez, M.J. (author), Wei, W. (author), Van Leeuwen, I. (author) conference paper 2015
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Pereira, S.F. (author), Wiegman, A. (author), Kumar, N. (author), Da Costa Assafrao, A. (author), Polo, A. (author), Wei, L. (author), Van Haver, S. (author)Measurement techniques to determine the aberration of an optical system, by obtaining through-focus intensity images that are produced when the object is a point source at infinity, are shown. The analysis of the aberrations is made using the extended version of the Nijboer-Zernike diffraction theory. This theory provides a semi analytical...conference paper 2012
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Sharp transitions between potentially different turbulent states are unexpected because one might think that they should be washed out by the prevailing intense fluctuations and short coherence lengths and times. Contrary to this expectation, we found a sequence of such transitions in turbulent rotating Rayleigh-Bénard convection as the rotation...conference paper 2015
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- Duc, T.C. (author), Wei, J. (author), Sarro, P.M. (author), Lau, G.K. (author) conference paper 2007
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Gao, P. (author), Wei, J.X. (author), Yu, Q.J. (author)Chemical shrinkage is one of the main reasons leading to the early age deformation of concrete. Hence, the prediction of chemical shrinkage is an important issue for evaluating the deformation of concrete and its influence on the durability of concrete structures. There is still room to improve the accuracy for predicting the chemical shrinkage...conference paper 2021
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Luo, Y.C. (author), Liu, X.X. (author), Hayton, D.J. (author), Wei, L. (author), Gao, J.R. (author), Groppi, C. (author)A Fourier phase grating mirror will be applied to split a single, coherent terahertz source beam into multi-beams, which are spatially distributed as required for the local oscillator in an array receiver. We report on the simulation, design and fabrication of a Fourier phase grating at 1.25 THz for generating 2×2 beams, and the measurements at...conference paper 2015
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Tian, Cong (author), Wei, Xiaosheng (author)An improved method based on the ring test called eccentric ring test is used to study the cracking of cementitious materials. The water-cement ratios were 0.25, 0.30, 0.35, 0.4 and the aggregate mass fractions were 10%, 30%, 50%, respectively. It was found that with the increase of water-cement ratio and aggregate, the cracking time of the...conference paper 2021
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- Wei, Y. (author) conference paper 2010
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- Wei, Shi (author) conference paper 2009
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Wei, X. (author), Urbach, H.P. (author), Wachters, A. (author), Aksenov, Y. (author)The polarization induced by the mask is studied by using a 3D rigorous model, wich solves Maxwell equations using the finite element method. Teh aerial image depends strongly on the change of polarization induced by the materials, thickness of the layer and pitch of the periodic masks.conference paper 2005
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Wu, Xintong (author), Huang, Haoliang (author), Liu, Hao (author), Hu, Jie (author), Wei, Jiangxiong (author), Yu, Qijun (author)In this study, a new concept on self healing of cracks that the ingressive ions in the crack is chemically bound to improve the self-healing efficiency was proposed for cracked cementitious materials in a marine environment. Thermodynamic modeling was performed to determine the appropriate masses and ratio of Ca2+ and Al3+ provided by chemical...conference paper 2021
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- Wei, Z.G. (author), Wieringa, P.A. (author) conference paper 1997
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- Wei, Y. (author) conference paper 2009