Results 31 to 40 of about 22,148 (267)

Good Volatility, Bad Volatility and Option Pricing [PDF]

open access: yesSSRN Electronic Journal, 2016
Advances in variance analysis permit the splitting of the total quadratic variation of a jump-diffusion process into upside and downside components. Recent studies establish that this decomposition enhances volatility predictions and highlight the upside/downside variance spread as a driver of the asymmetry in stock price distributions. To appraise the
Feunou, Bruno, Okou, Cédric
openaire   +2 more sources

Maize initial development as affected by nitrogen sources and rates at sowing time [PDF]

open access: yesBiotemas, 2009
The growth of notillage has stimulated an increase in nitrogen applied at maize sowing time. This work was carried out aiming to evaluate the effects of nitrogen fertilizer sources and rates on maize germination.
Paula Bianchet   +2 more
doaj  

Air-Sea Exchange of Legacy POPs in the North Sea Based on Results of Fate and Transport, and Shelf-Sea Hydrodynamic Ocean Models

open access: yesAtmosphere, 2014
The air-sea exchange of two legacy persistent organic pollutants (POPs), γ-HCH and PCB 153, in the North Sea, is presented and discussed using results of regional fate and transport and shelf-sea hydrodynamic ocean models for the period 1996–2005.
Kieran O'Driscoll
doaj   +1 more source

THE FRACTIONAL VOLATILITY MODEL AND ROUGH VOLATILITY

open access: yesInternational Journal of Theoretical and Applied Finance, 2023
The question of the volatility roughness is interpreted in the framework of a data-reconstructed fractional volatility model, where volatility is driven by fractional noise. Some examples are worked out and, using the Malliavin calculus for fractional processes, an option pricing equation and its solution are obtained.
openaire   +2 more sources

Computational Study on Parametric Variation with Solar Heat Induction of an Entrained Flow Gasifier

open access: yesEnergies, 2022
Gasification has played an important role in the sustainable use of waste biomass, providing useful combustible gases in the process. Gasification has an important role in waste management and promotes energy independence for many oil-deficit countries ...
Anirudh Singh   +3 more
doaj   +1 more source

Stochastic Volatility of Volatility in Continuous Time

open access: yesSSRN Electronic Journal, 2009
This paper introduces the concept of stochastic volatility of volatility in continuous time and, hence, extends standard stochastic volatility (SV) models to allow for an additional source of randomness associated with greater variability in the data.
Barndorff-Nielsen, Ole, Veraart, Almut
openaire   +2 more sources

Volatility of Aggregate Volatility and Hedge Fund Returns [PDF]

open access: yesSSRN Electronic Journal, 2014
This paper investigates empirically whether uncertainty about equity market volatility can explain hedge fund performance both in the cross section and over time. We measure uncertainty via volatility of aggregate volatility (VOV) and construct an investable version through returns on lookback straddles on the VIX index.
Agarwal, V, Arisoy, Y E, Naik, N
openaire   +5 more sources

Effect of rice intermittent irrigation on nitrogen cycle and emission in a lysimeter study [PDF]

open access: yesCaspian Journal of Environmental Sciences
Although intermittent irrigation is widely regarded as a saving irrigation water technology in paddy fields, it can cause water and air pollution by changing the nitrogen cycle.
Atefeh M. Soltani, Maryam Navabian
doaj   +1 more source

The Volatility of Volatility

open access: yesCFA Institute Magazine, 2013
“In the long run, we may all be dead, as Keynes suggested, but we need to make sure that the short run doesn’t kill us first,” says Andrew Lo.
openaire   +2 more sources

Fate of allelochemicals in the soil Destino de aleloquímicos no solo

open access: yesCiência Rural, 1997
Allelochemicals are compounds released by one plant or plant residues that may have a negative or positive effect on other plant. The importance of allelopathy was extensively explored during the past three decades, with the work concentrating in the ...
Ribas Antonio Vidal, Thomas Trost Bauman
doaj   +1 more source

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