Browsing by Author "Chen, X"

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    • Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances and Weak Lensing 

      Abbott, TMC; Aguena, M; Alarcon, A; Allam, S; Allen, S; Annis, J; Avila, S; ... (100 authors)
      We perform a joint analysis of the counts and weak lensing signal of redMaPPer clusters selected from the Dark Energy Survey (DES) Year 1 dataset. Our analysis uses the same shear and source photometric redshifts estimates ...

    • Impact of gully incision on hillslope hydrology 

      Chen, X; Kumar, M; deB Richter, D; Mau, Y (Hydrological Processes, 2020-01-01)
      © 2020 John Wiley & Sons Ltd The Southern U.S. Piedmont ranging from Virginia to Georgia underwent severe gully erosion over a century of farming mainly for cotton (1800s–1930s). Although tree succession blanketed much ...

    • Semiparametric Efficiency in GMM Models with Auxiliary Data 

      Chen, X; Hong, H; Tarozzi, A (2007)
      We study semiparametric efficiency bounds and efficient estimation of parameters defined through general moment restrictions with missing data. Identification relies on auxiliary data containing information about the distribution ...

    • Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound S r14 C u24 O41 

      Chen, X; Bansal, D; Sullivan, S; Abernathy, DL; Aczel, AA; Zhou, J; Delaire, O; ... (8 authors) (Physical Review B - Condensed Matter and Materials Physics, 2016-10-21)
      © 2016 American Physical Society.Intriguing lattice dynamics have been predicted for aperiodic crystals that contain incommensurate substructures. Here we report inelastic neutron scattering measurements of phonon and magnon ...