Results 21 to 30 of about 984,564 (290)

Canonical Quantization and Expanding Metrics [PDF]

open access: yes, 1998
The canonical formalism for expanding metrics scenarios is presented. Non-unitary time evolution implied by expanding geometry is described as a trajectory over unitarily inequivalent representations at different times of the canonical commutation ...
Alfinito, E., Vitiello, G.
core   +2 more sources

Hindcasting morphodynamic evolution with sand–mud interactions in the Yangtze Estuary [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
Previous work on morphodynamic evolution in the Yangtze Estuary (YE) is based on measured historical bathymetries. To evaluate the sensitivity of sand–mud interaction in the estuarine morpho-dynamics, a process-based morphodynamic model, Delft3D, is used
H. Jie   +6 more
doaj   +1 more source

Cosmological Magnetic Fields from Primordial Helical Seeds [PDF]

open access: yes, 2002
Most early Universe scenarios predict negligible magnetic fields on cosmological scales if they are unprocessed during subsequent expansion of the Universe. We present a new numerical treatment of the evolution of primordial fields and apply it to weakly
A. Loeb   +21 more
core   +3 more sources

Multiobjective optimization for nuclear fleet evolution scenarios using COSI

open access: yesEPJ Nuclear Sciences & Technologies, 2016
The consequences of various fleet evolution options on material inventories and flux in fuel cycle and waste can be analysed by means of transition scenario studies.
Freynet David   +4 more
doaj   +1 more source

URBANCO2FAB: COMPREHENSION OF CONCURRENT VIEWPOINTS OF URBAN FABRIC BASED ON GIT [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The study of urban evolution requires representation and management of concurrent points of view using interoperable standards. An extension to CityGML has been recently proposed (Chaturvedi et al., 2017) to represent urban evolution. In this article, we
J. Samuel, S. Servigne, G. Gesquière
doaj   +1 more source

Beginnings of Developing Kinetic Scenarios of Plasma Evolution Due to Coulomb Collisions

open access: yesPlasma, 2021
A new logic of reducing the two-time formalism to a highly informative scenario of redistribution of plasma particles in momentum due to Coulomb collisions is reported.
Vasily Erofeev
doaj   +1 more source

High redshift evolution of optically and IR-selected galaxies: a comparison with CDM scenarios [PDF]

open access: yes, 1999
A combination of ground-based (NTT and VLT) and HST (HDF-N and HDF-S) public imaging surveys have been used to collect a sample of 1712 I-selected and 319 $K\leq 21$ galaxies. Photometric redshifts have been obtained for all these galaxies.
Adriano Fontana   +40 more
core   +4 more sources

Scenarios for population health inequalities in 2030 in Europe: the EURO-HEALTHY project experience

open access: yesInternational Journal for Equity in Health, 2019
Background Health inequalities have been consistently reported across and within European countries and continue to pose major challenges to policy-making.
António Alvarenga   +10 more
doaj   +1 more source

Evolution test by improved genetic algorithm with application to performance limit evaluation of automatic parallel parking system

open access: yesIET Intelligent Transport Systems, 2021
Performance limit evaluation of automatic driving system before putting into the market is critical for driving safety. The evolution test by genetic algorithm (GA) is a method by iteratively generating new test scenarios according to the last test ...
Feng Gao   +3 more
doaj   +1 more source

Five- or six-step scenario for evolution? [PDF]

open access: yesInternational Journal of Astrobiology, 2008
AbstractThe prediction that (due to the limited amount of hydrogen available as fuel in the Sun) the future duration of our favourable terrestrial environment will be short (compared with the present age of the Earth) has been interpreted as evidence for a hard-step scenario.
openaire   +2 more sources

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