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Schmidt, M. (author), Han, S.C. (author), Kusche, J. (author), Sanchez, L. (author), Shum, C.K. (author)We determine a regional spatiotemporal gravity field over northern South America including the Amazon region using GRACE inter-satellite range-rate measurements by application of a wavelet-based multiresolution technique. A major advantage of this method is that we are able to represent the Amazon hydrological signals in form of time series of...journal article 2006
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- Corsi, T.M. (author), Boyson, S. (author), Verbraeck, A. (author), Van Houten, S.P. (author), Han, C. (author), MacDonald, J.R. (author) journal article 2006
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- Schmidt, M. (author), Fengler, M. (author), Mayer-Guerr, T. (author), Eicker, A. (author), Kusche, J. (author), Sanchez, L. (author), Han, S.C. (author) journal article 2007
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- Lin, H. (author), Liang, H. (author), Han, B. (author), Zhong, J. (author), Su, Q. (author), Dorenbos, P. (author), Birowosuto, M.D. (author), Zhang, G. (author), Fu, Y. (author), Wu, W. (author) journal article 2007
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Yuan, C.A. (author), Zhang, G.Q. (author), Han, C.N. (author), Chiang, K.N. (author), Cui, Y. (author)The mechanical characteristics of the long-chain double-stranded DNA (dsDNA) molecule under the axial stretching and lateral unzipping are studied by the clustered atomistic-continuum method (CACM). The CACM consisted of the clustered atom method (CAM) and the atomistic-continuum method (ACM). The CAM treats the specific atomic group as the...journal article 2007
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Han, B. (author), Liang, H. (author), Lin, H. (author), Zhong, J. (author), Su, Q. (author), Dorenbos, P. (author), Birowosuto, M.D. (author), Zhang, G. (author), Fu, Y. (author)The phosphors Ba3Gd(BO3)3:Ce3+ were prepared by a solid-state reaction technique at high temperature. The vacuum ultraviolet-ultraviolet and visible spectroscopic properties of the phosphors together with decay time curves are investigated and discussed. The spectroscopic properties are explained by occupancy of Ce3+ at two different Gd sites in...journal article 2007
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Han, S.C. (author), Ditmar, P. (author)A spatiospectral localization method is discussed for processing the global geopotential coefficients from satellite mission data to investigate time-variable gravity. The time-variable mass variation signal usually appears associated with a particular geographical area yielding inherently regional structure, while the dependence of the...journal article 2007
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Guo, J. (author), Han, C. (author)Future lunar missions ask for the capability to perform precise Guidance, Navigation and Control (GNC) to the selected landing sites on the lunar surface. This paper studies the guidance issues for the lunar pinpoint soft landing problem. The primary contribution of this paper is the design of descent guidance law based on the Pontryagin maximum...journal article 2009
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- Sheng, Q. (author), Han, L. (author) journal article 2009
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Hou, D. (author), Han, B. (author), Chen, W. (author), Liang, H. (author), Su, Q. (author), Dorenbos, P. (author), Huang, Y. (author), Gao, Z. (author), Tao, Y. (author)A series of Ce3+ doped ?-Sr2?2xCexNaxP2O7 phosphor compounds has been prepared using a high-temperature solid-state reaction technique. The luminescence properties under vacuum ultraviolet-UV and x-ray excitation were studied. Luminescence spectra reveal three UV-emitting peaks at about 310, 330, and 350 nm from which we conclude that Ce3+...journal article 2010
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Han, B. (author), Yang, Z. (author), Shi, X. (author), Yu, X. (author)This paper preliminarily investigates the general transport properties (i.e., water sorptivity, water permeability, and gas permeability) of carbon-nanotube/cement composites. Carboxyl multi-walled carbon nanotubes (MWNTs) are dispersed into cement mortar to fabricate the carbon nanotubes (CNTs) reinforced cement-based composites by applying...journal article 2012
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Yoo, H.W. (author), Han, S. (author), Lee, Y.S. (author)We propose the receding horizon H (infinity) control (RHHC) for input-delayed systems. A new cost function for a finite horizon dynamic game problem is first introduced, which includes two terminal weighting terms parameterized by a positive definite matrix, called a terminal weighing matrix. Secondly, the RHHC is obtained from the solution to...journal article 2012
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Han, S.C. (author), Riva, R.E.M. (author), Sauber, J. (author), Okal, E. (author)We quantify gravity changes after great earthquakes present within the 10 year long time series of monthly Gravity Recovery and Climate Experiment (GRACE) gravity fields. Using spherical harmonic normal-mode formulation, the respective source parameters of moment tensor and double-couple were estimated. For the 2004 Sumatra-Andaman earthquake,...journal article 2013
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Wang, X. (author), Xing, F. (author), Zhang, M. (author), Han, N. (author), Qian, Z. (author)The recovery behavior for strength and impermeability of cementitious composites embedded with organic microcapsules was investigated in this study. Mortar specimens were formed by mixing the organic microcapsules and a catalyst with cement and sand. The mechanical behaviors of flexural and compression strength were tested. The results showed...journal article 2013
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Han, L. (author), Zeman, M. (author), Smets, A.H.M. (author)This paper demonstrates that free-standing silicon nanocrystals (Si NCs) have significantly different thermal conductivity properties compared to Si NCs embedded in a host matrix. The temperatures of Si NCs under laser illumination have been determined by measuring the ratio of the Anti-Stokes to Stokes intensities of the first order Si–Si...journal article 2015
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Han, L. (author), Zeman, M. (author), Smets, A.H.M. (author)The growth mechanism of silicon nanocrystals (Si NCs) synthesized at a high rate by means of expanding thermal plasma chemical vapor deposition technique are studied in this letter. A bimodal Gaussian size distribution is revealed from the high-resolution transmission electron microscopy images, and routes to reduce the unwanted large Si NCs are...journal article 2015
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Xiong, W. (author), Tang, J. (author), Zhu, G. (author), Han, N. (author), Schlangen, E. (author), Dong, B. (author), Wang, X. (author), Xing, F. (author)Steel is prone to corrosion induced by chloride ions, which is a serious threat to reinforced concrete structures, especially in marine environments. In this work, we report a novel capsule-based selfrecovery system that utilizes chloride ions as a trigger. These capsules, which are functionalized via a smart response to chloride ions, are...journal article 2015
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Vasudevan, R.A. (author), Thanawala, Zaid (author), Han, L. (author), Tan, H. (author), Buijs, Thom (author), Deligiannis, D. (author), Perez Rodriguez, P. (author), Digdaya, I.A. (author), Smith, W.A. (author), Zeman, M. (author), Smets, A.H.M. (author)A hybrid tandem solar cell consisting of a thin-film, nanocrystalline silicon top junction and a siliconheterojunction bottom junction is proposed as a supporting solar cell for photoelectrochemical applications.Tunneling recombination junction engineering is shown to be an important consideration indesigning this type of solar cell. The best...journal article 2016
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Han, Y. (author), Yuan, Y. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)This paper proposes an extension of the discrete Lighthill–Whitham–Richards model of the cell transmission model type to reproduce capacity drop and the propagation of jam waves. Recent studies have tried to incorporate the capacity drop into discrete first-order traffic flow models for traffic optimization purposes. It was found that the inflow...journal article 2016
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Fu, Dejian (author), Bowman, Kevin W. (author), Worden, Helen M. (author), Natraj, Vijay (author), Worden, John R. (author), Yu, Shanshan (author), Veefkind, j. Pepijn (author), Aben, Ilse (author), Landgraf, Jochen (author), Strow, Larrabee (author), Han, Yong (author)The Measurements of Pollution in the Troposphere (MOPITT) instrument is the only satellite-borne sensor in operation that uses both thermal (TIR) and nearinfrared (NIR) channels to estimate CO profiles. With more than 15 years (2000 to present) of validated multispectral observations, MOPITT provides the unique capability to separate CO in...journal article 2016