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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
document
Wang, XiaoX (author), Liu, JiaP (author), Zhong, PeiH (author)
When the corrosion expansion stress of the steel reinforcement exceeds the ultimate tensile strength of the concrete, the concrete will crack and eventually cause structural damage. Therefore, direct characterization methods of steel corrosion expansion stress can help predict the concrete cracking time, prevent corrosion expansion and repair...
conference paper 2021
document
Kutt, Lembit M. (author), Plaszczyk, Christopher M. (author), Chen, Yung-Kuang (author), Liu, Donald (author)
conference paper 1985
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Liu, L. (author), Zlatanova, S. (author)
Indoor navigation is gaining an increasing interest among researchers in many domains. In many cases users need to orient quickly in complex environments, which is not always the target of current routing algorithms. The paper reviews current indoor path-finding approaches and discusses some of the limitations. In order to support a natural...
conference paper 2011
document
Schlangen, H.E.J.G. (author), Garica, A. (author), Van de Ven, M.F.C. (author), Van Bochove, G. (author), Van Montfort, J. (author), Liu, Q. (author)
conference paper 2011
document
Liu, Y. (author), Wapenaar, C.P.A. (author), Arntsen, B. (author)
The retrieval of the Green's functions between receiver pairs by multi-dimensional deconvolution can be extended to extract the impulse response between source pairs through source-receiver reciprocity. However in general, the procedure requires the separation of the outgoing and incoming wavefields at the sources, which reduces to the...
conference paper 2014
document
Liu, X. (author), Tzimiris, G. (author), Li, J. (author), Scarpas, T. (author), Hofman, R. (author), Voskuilen, J. (author)
In order to adequately characterize the fatigue response of the various membranes with surrounding multilayer surfacing layers on orthotropic steel decks and collect the necessary parameters for FE modeling, the details of the cyclic Membrane Adhesion Tester (MAT) are introduced. The fatigue damage in membrane interface is related to the amount...
conference paper 2015
document
Hashemifarahani, H. (author), Ditmar, P.G. (author), Inacio, P.M.G. (author), Klees, R. (author), Guo, J. (author), Guo, X. (author), Liu, X. (author), Zhao, Q. (author), Didova, O. (author), Ran, J. (author), Sun, Y. (author), Tangdamrongsub, N. (author), Gunter, B.C. (author), Riva, R.E.M. (author), Steele-Dunne, S.C. (author)
conference paper 2014
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Liu, Z. (author), Lacasse, S. (author), Nadim, F. (author), Gilbert, R. (author)
The safe bearing capacity for offshore shallow foundations has been traditionally assessed using working stress design (WSD) methods (e.g. the API RP 2GEO guideline). Other codes of practice such as the ISO standard strive to provide designs achieving a desired target reliability level in the form of the Load and Resistance Factor Design (LRFD)...
conference paper 2015
document
Liu, Y. (author), Tang, Q. (author), Fox, R.O. (author)
Computational fluid dynamics (CFD) is a useful tool for modeling chemical reactors. However, because the design goals and expected outcomes are different than in "traditional'' CFD applications, chemical reactors require special attention to the treatment of chemical reactions, and heat and mass transfer. Here we provide an overview of the...
conference paper 2006
document
Liu, Xueyan (author)
Recycling of base asphalt pavement with rejuvenators or soft binders has been applied for many decades and a lot of experience has been gained. However, the high-quality recycling technique of polymer modified asphalt (PMA) has still not been sufficiently studied. The aging mechanism of PMA is complex, including the combined effects of the...
conference paper 2021
document
Kostopoulos, D. (author), Liu, D. (author), Genani, G. (author), Polinder, H. (author)
Offshore wind is considered a vital component of the future large scale renewable generation portfolio. Intense R&D effort is occurring in both the technology and the supply chain aiming at cost reduction. The drivetrain of wind turbines is an area of continuous evolution with currently no one standard configuration in the industry. It is...
conference paper 2013
document
Liu, J.H. (author)
conference paper 2006
document
Chen, X. (author), Liu, X. (author), Qian, Z. (author), Lei, Z. (author)
Reliable and durable asphalt surfacing systems still remain to be desired for the long-spanned orthotropic steel bridges as the nationally and internationally reports on distresses in deck pavement. Based on ten-year research works, this paper has presented a brief review and discussion of the Chinese practices and experiences of deck pavement...
conference paper 2012
document
Fellows, R. (author), Liu, A. (author)
In almost 20 Years since Latham published the interim report ‘Trust and Money’ in which he asserted that there was too little of either in the UK construction industry, has anything changed? This paper addresses issues of what trust is, how it is created and its fragility, and progresses to examine how trust operates in the construction industry...
conference paper 2011
document
Liu, X. (author), Markine, V.L. (author), Shevtsov, I. (author)
This paper presented the performance study of two frogs in a double crossover in the railway network in the Netherlands. These frogs are located on the same track line. Each train passes through Frog 1 in the facing direction and Frog 2 in the trailing direction. Both frogs are monitored with ESAH-M crossing dynamic behaviour measurement tool...
conference paper 2015
document
Tao, Y. (author), Gao, D.W. (author), Wang, H.Y. (author), Zhang, X. (author), Ghasimi, S.M.D. (author), Ozgun, H. (author), Ersahin, M.E. (author), Zhou, Z.B. (author), Liu, G. (author), Temudo, M.F. (author), Kloek, J. (author), Spanjers, H. (author), De Kreuk, M.K. (author), Van Lier, J.B. (author)
conference paper 2014
document
The drag reduction effect of a semi-circular riblet-structured surface in a turbulent boundary layer is experimentally investigated using the micro-pillar shear stress sensor MPS3. The MPS3 sensor is a novel tool for the quantitative measurement of the wall-shear stress distribution and possesses a high spatial and temporal resolution. The...
conference paper 2015
document
Lindenbergh, R.C. (author), Liu, S. (author), Hanssen, R. (author), De Haan, S. (author), Van der Marel, H. (author)
High spatial resolution integrated water vapor (IWV) estimates are available from the MERIS spectrometer on board of Envisat. Unfortunately cloud cover results in loss of a large amount of MERIS IWV pixels. Here methods are presented for filling cloud gaps in MERIS IWV scenes, first, by directly interpolating remaining pixels not affected by...
conference paper 2009
document
Xiao, Wenting (author), Liu, Yuming (author), Yue, Dick K.P. (author)
conference paper 2011
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