Results 81 to 90 of about 4,551 (164)

Antennas for 20/30 GHz and beyond [PDF]

Antennas of 20/30 GHz and higher frequency, due to the small wavelength, offer capabilities for many space applications. With the government-sponsored space programs (such as ACTS) in recent years, the industry has gone through the learning curve of ...
Chen, C. Harry, Hamada, S. Jim, Wong, William C.   +2 more
core   +1 more source

Optical Absorption Study by Ab initio Downfolding Approach: Application to GaAs

, 2007
We examine whether essence and quantitative aspects of electronic excitation spectra are correctly captured by an effective low-energy model constructed from an {\em ab initio} downfolding scheme. A global electronic structure is first calculated by {\em
J. A. Pople, Kazuma Nakamura, L. Hedin, Masatoshi Imada, Ryotaro Arita, Shinji Tsuneyuki, T. R. Prytkova, Y. Toyozawa, Yoshihide Yoshimoto   +8 more
core   +1 more source

Phased array-fed antenna configuration study: Technology assessment [PDF]

Spacecraft array fed reflector antenna systems were assessed for particular application to a multiple fixed spot beam/multiple scanning spot beam system.
Ball, D. E., Croswell, W. F., Taylor, R. C.   +2 more
core   +1 more source

Development of Satellite Propagation Effects Tool For Ku-Band, Ka-Band And Q/V-Band Links [PDF]

, 2005
The thesis presents Graphical User Interfaces (GUIs) to analyse satellite propagation effects for Ku-band, Ka-band and QN-band links by using Matlab programming languages.
Ahmad Hambali, Nor Azura Malini
core  

Optimization of inhomogeneous electron correlation factors in periodic solids

, 2002
A method is presented for the optimization of one-body and inhomogeneous two-body terms in correlated electronic wave functions of Jastrow-Slater type. The most general form of inhomogeneous correlation term which is compatible with crystal symmetry is ...
A. Harju, A. Malatesta, A.J. Williamson, A.J. Williamson, A.J. Williamson, C. Filippi, C.J. Umrigar, C.T. Chan, D. Bohm, D. Bressanini, D. Ceperley, D. Prendergast, D.M. Ceperley, David Bevan, David Prendergast, E. Krotscheck, F. Schautz, L. Hedin, L. Mitas, L.M. Fraser, M. Snajdr, M. Snajdr, M.P. Nightingale, M.T. Yin, P. Hohenberg, P.R.C. Kent, R. Gaudoin, R.Q. Hood, R.Q. Hood, S. Fahy, S. Fahy, Stephen Fahy, T. Kato, W. Kohn, W.L. McMillan, W.M.C. Foulkes, X. Lin   +36 more
core   +1 more source

Physics of Electroweak Interactions with Nuclei

, 2009
In this series of lectures it is illustrated how one can study the strong dynamics of nuclei by means of the electroweak probe. In particular, the most important steps to derive the cross sections in first order perturbation theory are reviewed.
Orlandini, Giuseppina
core   +1 more source

Bump hunting with non-Gaussian kernels

, 2005
It is well known that the number of modes of a kernel density estimator is monotone nonincreasing in the bandwidth if the kernel is a Gaussian density.
Hall, Peter, Minnotte, Michael C., Zhang, Chunming   +2 more
core   +1 more source

Impulse Hydroforming Method for Very Thin Sheets from Metallic or Hybrid Materials [PDF]

, 2010
Forming of very thin metallic and hybrid material foils is a demanding task in several application areas as for example in food or pharmaceutical packaging industries.
Beerwald, C., Beerwald, M., Dirksen, U., Henselek, A.   +3 more
core  

Efficacy of an extensively hydrolyzed formula with the addition of synbiotics in infants with cow's milk protein allergy: a real-world evidence study. [PDF]

Front Allergy, 2023
Soria R, Del Compare M, Sallaberry M, Martín G, Aprigliano G, Hermida V, Carosella M, Gruenberg M, Monsell S, Micone P, Maciero E, Giglio N.   +11 more
europepmc   +1 more source

EHF as a key regulator mediating cell migration and may contribute to tumor immune infiltration and progression in human endometrial cancer. [PDF]

BMC Cancer
Chen X, Chen X, Yuan L, Kan T, Ding X, You Y, Liu Z, Yang X.   +7 more
europepmc   +1 more source