Results 91 to 100 of about 440,939 (238)

Lattice Gaussian Sampling by Markov Chain Monte Carlo: Bounded Distance Decoding and Trapdoor Sampling [PDF]

, 2018
Sampling from the lattice Gaussian distribution plays an important role in various research fields. In this paper, the Markov chain Monte Carlo (MCMC)-based sampling technique is advanced in several fronts.
Ling, Cong, Wang, Zheng
core   +1 more source

The X-ray Spectrum of the Vela Pulsar Resolved with Chandra

, 2001
We report the results of the spectral analysis of two observations of the Vela pulsar with the Chandra X-ray observatory. The spectrum of the pulsar does not show statistically significant spectral lines in the observed 0.25-8.0 keV band.
Becker W., D. Sanwal, G. G. Pavlov, G. P. Garmire, Kanbach G., Markwardt C. B., Nasuti F. P., Pavlov G. G., Stage M. D., V. Burwitz, V. E. Zavlin, Zavlin V. E.   +11 more
core   +1 more source

Bounds for resistance-distance spectral radius

, 2013
Lower and upper bounds as well as Nordhause-Gaddum-type results for the resistance-distance spectral radius are obtained.
Maden, A. Dilek Gungor, Gutman, Ivan, Cevik, A. Sinan   +2 more
openaire   +3 more sources

Perfect matching and distance spectral radius in graphs and bipartite graphs [PDF]

Discrete Applied Mathematics, 2021
Yuke Zhang, Huiqiu Lin
semanticscholar   +1 more source

A Spectroscopic Method to Measure Macho Proper Motions

, 1994
A Massive Compact Halo Object (Macho) that lenses a background star will magnify different parts of the rotating stellar disk by varying amounts. The differential magnification will cause a shift in the centroid of the star's spectral lines during the ...
Gould, Andrew, Maoz, Dan
core   +1 more source

Spatial spectral and energy efficiencies of cellular networks limited by co-channel interference and path loss in Nakagami-m fading environment

EURASIP Journal on Wireless Communications and Networking, 2018
A comprehensive framework for design of hexagonal cellular network system in terms of spatial spectral and energy efficiencies is presented. The communication environment in the system is assumed to be Nakagami-m fading coupled with simplified path loss ...
Abdulbaset M. Hamed, Raveendra K. Rao
doaj   +1 more source

Measurement of the Radius of Neutron Stars with High S/N Quiescent Low-mass X-ray Binaries in Globular Clusters

, 2013
This paper presents the measurement of the neutron star (NS) radius using the thermal spectra from quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters (GCs). Recent observations of NSs have presented evidence that cold ultra dense matter -
Guillot, Sebastien, Rutledge, Robert E., Servillat, Mathieu, Webb, Natalie A.   +3 more
core   +3 more sources

Distance signless Laplacian eigenvalues, diameter, and clique number [PDF]

Discrete Mathematics Letters, 2022
Saleem Khan, Shariefuddin Pirzada
doaj   +1 more source

Design and Implementation of a Monitoring System for Measuring Polarization Degree of Optical Pumping 3He

Chinese Journal of Magnetic Resonance, 2020
Spin polarized 3He is widely used to polarize neutrons as neutron spin filters (NSF). China Mianyang Research Reactor (CMRR) has established the first spin exchange optical pumping (SEOP) polarized 3He neutron polarization system in China.
YAN Song, TU Xiao-qing, PENG Mei
doaj   +1 more source

The masses, radii and luminosities of the components of U Geminorum

, 2005
We present a phase-resolved spectroscopic study of the secondary star in the cataclysmic variable U Gem. We use our data to measure the radial velocity semi-amplitude, systemic velocity and rotational velocity of the secondary star.
A. Allan, Anderson, Beekman, Brett, Davey, Delfosse, Delfosse, Eggleton, Friend, Friend, Gizis, Harrison, Harrison, Hawley, Horne, K. S. Long, Kiplinger, Kolb, Littlefair, Long, Long, Long, Long, Lucy, Marcy, Marsh, Paczynski, Provencal, Reid, Ribas, Shahbaz, Shahbaz, Smak, Smith, Stauffer, T. Naylor, Wade, Warner, Webb, Webb   +39 more
core   +1 more source