Results 21 to 30 of about 779,578 (304)

Extraction of market expectations from risk-neutral density [PDF]

open access: yesZbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu, 2015
The purpose of this paper is to investigate which of the proposed parametric models for extracting risk-neutral density; among Black-Scholes Merton, mixture of two log-normals and generalized beta; give the best fit.
Josip Arnerić   +2 more
doaj   +1 more source

The role of edge fueling in determining the pedestal density in high neutral opacity Alcator C-Mod experiments

open access: yesNuclear Materials and Energy, 2021
SOLPS-ITER modeling of EDA H-mode experiments on Alcator C-Mod find that the electron density pedestal structure is unaffected by increased gas fueling when approaching ITER-like opaqueness conditions.
R. Reksoatmodjo   +4 more
doaj   +1 more source

Time-dependent responses of the neutral mass density to fixed magnetospheric energy inputs into the cusp region in the thermosphere during a period of large IMF B Y: a high-resolution two-dimensional local modeling

open access: yesEarth, Planets and Space, 2021
Thermospheric mass density values around the 400-km altitude in the cusp can be significantly enhanced as compared to regions around the cusp. To gain insights into the extent to which the magnitude of the cusp mass density enhancements can be explained ...
Tomokazu Oigawa   +2 more
doaj   +1 more source

TD-88Up: Upgraded neutral Earth's thermosphere total density TD-88 model [PDF]

open access: yesSerbian Astronomical Journal, 2009
Improved constants of the total density TD-88 model for the Earth's neutral thermosphere are calculated. The model is fully functional within the height range of 200 to 500 km, with fixed values of the mean solar flux and geomagnetic index.
Šurlan B., Šegan S.
doaj   +3 more sources

Neutral densities

open access: yes, 2022
The processed neutal density data from two satellites. These data files are in the text format.
openaire   +1 more source

Evidence of neutral transcriptome evolution in plants [PDF]

open access: yes, 2008
The transcriptome of an organism is its set of gene transcripts (mRNAs) at a defined spatial and temporal locus. Because gene expression is affected markedly by environmental and developmental perturbations, it is widely assumed that transcriptome ...
May, S. T.   +25 more
core   +1 more source

TND-IGG RL01: Thermospheric neutral density from accelerometer measurements of GRACE, CHAMP and Swarm

open access: yes, 2021
TND-IGG RL01: This dataset is the first release of thermospheric neutral densities (TND) processed at the Institute of Geodesy and Geoinformation (IGG), University of Bonn, Germany. TNDs are derived from accelerometer measurements of the satellites GRACE-
Forootan, Ehsan   +5 more
core   +1 more source

The neutral hydrogen cosmological mass density atz= 5 [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
AbstractWe present the largest homogeneous survey of redshift > 4.4 damped Lyα systems (DLAs) using the spectra of 163 quasars that comprise the Giant Gemini GMOS (GGG) survey. With this survey we make the most precise high-redshift measurement of the cosmological mass density of neutral hydrogen, ΩHI. After correcting for systematic effects using a
Crighton N. H. M.   +10 more
openaire   +6 more sources

Optical Properties of Neutral F Centers in Bulk MgO with Density Matrix Embedding

open access: yes, 2023
The optical spectra of neutral oxygen vacancies ($F^0$ centers) in the bulk MgO lattice was investigated using density matrix embedding theory. The impurity Hamiltonian was solved with the complete active space self-consistent field (CAS-DMET) and second-
Yu, Jin   +7 more
core   +1 more source

Mesoscale observations of Joule heating near an auroral arc and ion-neutral collision frequency in the polar cap E region [PDF]

open access: yes, 2011
We report on the first mesoscale combined ionospheric and thermospheric observations, partly in the vicinity of an auroral arc, from Svalbard in the polar cap on 2 February 2010. The EISCAT Svalbard radar employed a novel scanning mode in order to obtain
Wild, J.A.   +21 more
core   +1 more source

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