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By regarding signal transmission as tiling of the time-frequency plane, we propose a multicarrier transmission scheme on hexagonal lattice, coined the term hexagonal multicarrier modulation. To optimally combat the impact of the propagation channels, the underlying lattice parameters and the pulse shape of modulation waveform are jointly optimized to adapt(More)
The problem of approximate joint diagonalization of a set of matrices is instrumental in numerous statistical signal processing applications. For nonorthogonal joint diagonalization based on the weighted least-squares (WLS) criterion, the trivial (zero) solution can simply be avoided by adopting some constraint on the diagonalizing matrix or penalty terms.(More)
This paper presents an integrated optimization model of production planning and scheduling for a three-stage manufacturing system, which is composed of a forward chain of three kinds of workshops: a job shop, a parallel flow shop consisting of parallel production lines, and a single machine shop. As the products at the second stage are assembled from the(More)
To investigate the influence of carbon fiber (CF) surface treatment on the flexural strength and tribological properties of the short-cut CF/polyimide (PI) composites, pitch-based short-cut CF were treated by rare earth. The CF before and after treatment was examined by X-ray photoelectron spectroscopy (XPS) and by scanning electron microscopy (SEM). The(More)
Renal impairment and atrial fibrillation (AF) often coexist. Catheter ablation is an effective way to reduce the burden of AF and improve symptoms; however, little is known about the relationship between renal function and AF and its role in the progression of AF for patients undergoing repeat catheter ablation. In all, 171 patients with long-standing(More)
B. ADAMS,! M. BORLAND,! L. X. CHEN,! P. CHUPAS,! N. DASHDOR],! G. DOUMY,! E. DUFRESNE,! S. DURBIN,2 H. DDRR,3 P. EVANS,4 T. GRABER,s R. HENNING,s E. P. KANTER,! D. KEAVNEY,! C. KURTZ,! Y. LI,! A. M. MARCH,! K. MOFFAT,s A. NASSIRI,! S. H. SOUTHWORTH,! V. SRA]ER,s D. M. TIEDE,! D. WALKO,! J. WANG,! H. WEN,! L. YOUNG,! X. ZHANG,l AND A. ZHOLENTS1 1Argonne(More)
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