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Fu, Guangliang (author), Prata, Fred (author), Lin, H.X. (author), Heemink, A.W. (author), Segers, AJ (author), Lu, S. (author)Using data assimilation (DA) to improve model forecast accuracy is a powerful approach that requires available observations. Infrared satellite measurements of volcanic ash mass loadings are often used as input observations for the assimilation scheme. However, because these primary satellite-retrieved data are often two-dimensional (2-D) and...journal article 2017
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- Lu, T. (author), Tsouvalas, A. (author), Metrikine, A. (author) conference paper 2017
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Zheng, Fangfang (author), Li, Jie (author), van Zuylen, H.J. (author), Lu, Chao (author)Fuel consumption and atmospheric pollution emissions of vehicles depend on driving conditions, the characteristics of the driver and the car. The influence of driving style on the environmental aspects of a car journey has been investigated. Driver characteristics were determined by a Driver Behaviour Questionnaire and observed acceleration...journal article 2017
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Varjas, D. (author), De Juan, Fernando (author), Lu, Yuan Ming (author)Lattice translation symmetry gives rise to a large class of "weak" topological insulators (TIs), characterized by translation-protected gapless surface states and dislocation bound states. In this work we show that space group symmetries lead to constraints on the weak topological indices that define these phases. In particular, we show that...journal article 2017
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Lu, Dan (author), Yang, Shunkun (author), Zhang, Jiaquan (author), Wang, H. (author), Li, Daqing (author)Epidemic propagation on complex networks has been widely investigated, mostly with invariant parameters. However, the process of epidemic propagation is not always constant. Epidemics can be affected by various perturbations and may bounce back to its original state, which is considered resilient. Here, we study the resilience of epidemics on...journal article 2017
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- Lu, P. (author), van Kampen, E. (author), de Visser, C.C. (author), Chu, Q. P. (author) journal article 2017
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Lu, P. (author), van Kampen, E. (author), Chu, Q. P. (author)<br/>conference paper 2017
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Li, Nana (author), Jia, Li (author), Lu, Jing (author), Menenti, M. (author), Zhou, J. (author)The regional surface soil heat flux (G0) estimation is very important for the large-scale land surface process modeling. However, most of the regional G0 estimation methods are based on the empirical relationship between G0 and the net radiation flux. A physical model based on harmonic analysis was improved (referred to as "HM model") and...journal article 2017
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Lu, T. (author), Metrikine, A. (author)The stability of an oscillator uniformly moving along a thin ring that is connected to an immovable axis by a distributed viscoelastic foundation has been studied. The dynamic reaction of the ring to the oscillator is represented by a frequency and velocity dependent equivalent stiffness. The characteristic equation for the vibration of the...journal article 2017
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Qin, Caiyan (author), Zhang, Chaoning (author), Lu, H. (author)Due to its simple mechanical structure and high motion stability, the H-shaped platform has been increasingly widely used in precision measuring, numerical control machining and semiconductor packaging equipment, etc. The H-shaped platform is normally driven by multiple (three) permanent magnet synchronous linear motors. The main challenges for...journal article 2017
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Lu, Z. (author), Coster, Xander (author), de Winter, J.C.F. (author)Drivers of automated cars may occasionally need to take back manual control after a period of inattentiveness. At present, it is unknown how long it takes to build up situation awareness of a traffic situation. In this study, 34 participants were presented with animated video clips of traffic situations on a three-lane road, from an...journal article 2017
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Lu, H. (author), de Jong, W.M. (author), Chen, Y. (author)In the urban development policy in China, city brands play an important role in setting targets for Chinese cities. These economic city brands, however, are not produced in an institutional vacuum: they are embedded in the visions national, provincial and municipal governments have for these cities, i.e., on multi-level governance. In this paper...journal article 2017
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Lu, Y. (author), Steele-Dunne, S.C. (author), Farhadi, Leila (author), van de Giesen, N.C. (author)Surface heat fluxes play a crucial role in the surface energy and water balance. In situ measurements are costly and difficult, and large-scale flux mapping is hindered by surface heterogeneity. Previous studies have demonstrated that surface heat fluxes can be estimated by assimilating land surface temperature (LST) and soil moisture to...journal article 2017
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Lu, Z. (author), Happee, R. (author), de Winter, J.C.F. (author)This study presents a numerical model that describes the dynamic process of building situation awareness after an automation-initiated transition. The model predicts the level of situation awareness as a function of elapsed time since the transition, and is verified using data from an experiment in which participants watched animated video...conference paper 2017
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Lu, S. (author), Lin, H.X. (author), Heemink, A.W. (author), Segers, Arjo (author), Fu, Guangliang (author)In this paper, we reconstruct the vertical profile of volcanic ash emissions by assimilating satellite data and ground-based observations using a modified trajectory-based 4D-Var (Trj4DVar) approach. In our previous work, we found that the lack of vertical resolution in satellite ash column data can result in a poor estimation of the injection...journal article 2016
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- Lu, P. (author) doctoral thesis 2016
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Fu, Guangliang (author), Heemink, A.W. (author), Lu, S. (author), Segers, AJ (author), Weber, Konradin (author), Lin, H.X. (author)The forecast accuracy of distal volcanic ash clouds is important for providing valid aviation advice during volcanic ash eruption. However, because the distal part of volcanic ash plume is far from the volcano, the influence of eruption information on this part becomes rather indirect and uncertain, resulting in inaccurate volcanic ash forecasts...journal article 2016
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Krotkov, Nickolay A. (author), McLinden, Chris A. (author), Li, Can (author), Lamsal, Lok N. (author), Celarier, Edward A. (author), Marchenko, Sergey V. (author), Swartz, William H. (author), Bucsela, Eric J. (author), Joiner, Joanna (author), Duncan, Bryan N. (author), Folkert Boersma, K. (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author), Fioletov, Vitali E. (author), Dickerson, Russell R. (author), He, Hao (author), Lu, Zifeng (author), Streets, David G. (author)The Ozone Monitoring Instrument (OMI) onboard NASA's Aura satellite has been providing global observations of the ozone layer and key atmospheric pollutant gases, such as nitrogen dioxide (NO2) and sulfur dioxide (SO2), since October 2004. The data products from the same instrument provide consistent spatial and temporal coverage and permit...journal article 2016
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Lu, Q. (author), Xu, W. (author), Van der Zwaag, S. (author)We report a computational 'alloy by design' approach which can significantly accelerate the design process and substantially reduce the development costs. This approach allows simultaneously optimization of alloy composition and heat treatment parameters based on the integration of thermodynamic, thermo-kinetics and a genetic algorithm...conference paper 2016
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Lu, P. (author), van Kampen, E. (author), de Visser, C.C. (author), Chu, Q. P. (author)The design of unknown-input decoupled observers and lters requires the assumption of an existence condition in the literature.This paper addresses an unknown input ltering problem where the existence condition is not satised. Instead of designing a traditional unknown input decoupled lter, a Double-Model Adaptive Estimation approach is extended...journal article 2016