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Wang, W. (author), Van Gelder, P.H.A.J.M. (author), Vrijling, J.K. (author), Ma, J. (author)Conventional streamflow models operate under the assumption of constant variance or season-dependent variances (e.g. ARMA (AutoRegressive Moving Average) models for deseasonalized streamflow series and PARMA (Periodic AutoRegressive Moving Average) models for seasonal streamflow series). However, with McLeod-Li test and Engle's Lagrange...journal article 2005
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- Leus, G. (author), Giannakis, G. (author), Linnartz, J.P. (author), Ma, X. (author), Swami, A. (author), Tepedelenlioglu, C. (author) journal article 2006
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Khalili Amiri, P. (author), Zhuang, Y. (author), Schellevis, H. (author), Rejaei, B. (author), Vroubel, M. (author), Ma, Y. (author), Burghartz, J.N. (author)This work presents a series of high-resistivity nanogranular Co–Al–O films with maximum resistivity of ? 110?m??cm. The films were deposited using pulsed dc reactive sputtering of a Co72Al28 target in an oxygen/argon ambient. The samples were characterized by scanning electron microscopy (SEM), M-H loop measurements, and s-parameter measurements...journal article 2007
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Yan, B. (author), Pham, H.T.M. (author), Ma, Y. (author), Zhuang, Y. (author), Sarro, P.M. (author)The authors demonstrate a method for the fabrication of in situ ultrathin porous anodic aluminum oxide layers (aspect ratio<2:1) on Si, which can be directly used as templates for nanodot preparation and for pattern transfer. The regular shape of the aluminum oxide pores is maintained even when the thickness of the aluminum oxide template is...journal article 2007
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- Zeng, L.J. (author), Ma, C. (author), Yang, H.X. (author), Xiao, R.J. (author), Li, J.Q. (author), Jansen, J. (author) journal article 2008
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Ma, Y. (author), Rejaei, B. (author), Zhuang, Y. (author)We present a novel shielding method for on-chip transmission lines built on conductive silicon substrates. The shield consists of an artificial dielectric with a very high in-plane dielectric constant, built from two patterned metal layers isolated by a very thin dielectric film. Inserted below an integrated coplanar transmission line, the...journal article 2008
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Liu, R. (author), Lühr, H. (author), Doornbos, E. (author), Ma, S.Y. (author)With the help of four years (2002–2005) of CHAMP accelerometer data we have investigated the dependence of low and mid latitude thermospheric density on the merging electric field, Em, during major magnetic storms. Altogether 30 intensive storm events (Dstmin <?100 nT) are chosen for a statistical study. In order to achieve a good correlation Em...journal article 2010
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Ma, Y. (author), Hu, J. (author), Ye, G. (author)Alkali-activated fly ash (AAF) is a promising material that exhibits comparable material properties as cement-based materials but with much less CO2 emission. In the present work, the effect of activating solution (SiO2 and Na2O content) on the performance of AAF was studied by means of isothermal calorimetry and X-ray diffraction analysis....journal article 2012
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Zhou, Y.L. (author), Ma, S.Y. (author), Liu, R.S. (author), Luehr, H. (author), Doornbos, E. (author)The controls of merging electrical field, Em, and IMF (interplanetary magnetic field) magnitude, B, on the storm-time changes in upper thermospheric mass density are statistically investigated using GRACE accelerometer observations and the OMNI data of solar wind and IMF for 35 great storms during 2002–2006. It reveals the following: (1) The...journal article 2013
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Ma, Y. (author), Kuik, R. (author), Van Zuylen, H.J. (author)Prediction of traffic demand is essential, either for an understanding of the future traffic state or so necessary measures can be taken to alleviate congestion. Usually, an origin-destination (O-D) matrix is used to represent traffic demand between two zones in transportation planning. Vehicles are assumed to be homogeneous; the trips of each...journal article 2013
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- Hu, J. (author), Koleva, D.A. (author), Ma, Y. (author), Schlangen, E. (author), Van Breugel, K. (author) journal article 2013
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Hendrick, F. (author), Müller, J.F. (author), Clémer, K. (author), Wang, P. (author), De Maziere, M. (author), Fayt, C. (author), Gielen, C. (author), Hermans, C. (author), Ma, J.Z. (author), Pinardi, G. (author), Stavrakou, T. (author), Vlemmix, T. (author), Van Roozendael, M. (author)Ground-based Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements of nitrous acid (HONO) and its precursor NO2 (nitrogen dioxide) as well as aerosols have been performed daily in Beijing city centre (39.98° N, 116.38° E) from July 2008 to April 2009 and at the suburban site of Xianghe (39.75° N, 116.96° E) located ~60...journal article 2014
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Ma, L. (author), Naud, B. (author), Roekaerts, D.J.E.M. (author)This paper presents a numerical modeling study of one ethanol spray flame from the Delft Spray-in-Hot-Coflow (DSHC) database, which has been used to study Moderate or Intense Low-oxygen Dilution (MILD) combustion of liquid fuels (Correia Rodrigues et al. Combust. Flame 162(3), 759–773, 2015). A “Lagrangian-Lagrangian” approach is adopted where...journal article 2015
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Körmann, F. (author), Ma, D. (author), Belyea, D.D. (author), Lucas, M.S. (author), Miller, C.W. (author), Grabowski, B. (author), Sluiter, M.H.F. (author)The critical temperature and saturation magnetization for four- and five-component FCC transition metal alloys are predicted using a formalism that combines density functional theory and a magnetic mean-field model. Our theoretical results are in excellent agreement with experimental data presented in both this work and in the literature. The...journal article 2015
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Oh, H.S. (author), Ma, D (author), Leyson, G.P. (author), Grabowski, B (author), Park, E.S. (author), Körmann, F.H.W. (author), Raabe, D. (author)Lattice distortions constitute one of the main features characterizing high entropy alloys. Local lattice distortions have, however, only rarely been investigated in these multi-component alloys. We, therefore, employ a combined theoretical electronic structure and experimental approach to study the atomistic distortions in the FeCoNiCrMn high...journal article 2016
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Koladouz Esfahani, Z. (author), Rostamian, Ali (author), Kolahdouz, Mohammadreza (author), Ma, Teng (author), van Zeijl, H.W. (author), Zhang, Kouchi (author)This study presents a blue light detector for evaluating the output light of phosphor based white LED package. It is composed of a silicon stripe-shaped photodiode designed and implemented in a 2 μm BiCMOS process which can be used for wafer level integration of different passive and active devices all in just 5 lithography steps. The final...journal article 2016
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Li, Chuanrong (author), Zhou, Mei (author), Liu, Menghua (author), Ma, Lian (author), Wang, J. (author)Concealed cars extraction from point clouds data acquired by airborne laser scanning has gained its popularity in recent years. However, due to the occlusion effect, the number of laser points for concealed cars under trees is not enough. Thus, the concealed cars extraction is difficult and unreliable. In this paper, 3D point cloud...journal article 2016
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Wang, Zongping (author), Chen, Yiqun (author), Xie, Pengchao (author), Shang, R. (author), Ma, Jun (author)Cyanobacteria blooms in source waters have become a worldwide issue for drinking water production. UV-activated persulfate (UV/PS) technology was firstly applied to remove cultivated Microcystis aeruginosa (M. aeruginosa) in bench scale. The presence of persulfate significantly enhanced both cytoclasis and algal organic matter mineralization...journal article 2016
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Ma, L. (author), Huang, X. (author), Roekaerts, D.J.E.M. (author)We report results of a computational study of oxy-fuel spray jet flames. An experimental database on flames of ethanol burning in a coflow of a O2–CO2 mixture, created at CORIA (Rouen, France), is used for model validation (Cléon et al., 2015). Depending on the coflow composition and velocity the flames in these experiments start at nozzle (type...journal article 2017
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Ma, M. (author), Herdeiro Teixeira, A.M. (author), van den Berg, Jan (author), Palensky, P. (author)Low-voltage distribution grids experience a rising penetration of inverter-based, distributed generation. In order to not only contribute to but also solve voltage problems, these inverters are increasingly asked to participate in intelligent grid controls. Communicating inverters implement distributed voltage droop controls. The impact of...journal article 2017