Results 41 to 50 of about 10,737,325 (309)

The Effect of Sustainability Information on Consumers' Preferences for Fungus‐Resistant Grape Wine

open access: yesAgribusiness, EarlyView.
ABSTRACT The demand for sustainable food production is intensifying the need to reduce the environmental and social impacts of pesticide use in agriculture. In viticulture, where dependence on pesticides is high because grapevines are susceptible to fungal diseases, fungus‐resistant grape varieties (PIWI) offer a promising strategy to reduce chemical ...
Daniel Vecchiato   +2 more
wiley   +1 more source

A non-Lévy random walk in chacma baboons: what does it mean? [PDF]

open access: yesPLoS ONE, 2011
The Lévy walk is found from amoebas to humans and has been described as the optimal strategy for food research. Recent results, however, have generated controversy about this conclusion since animals also display alternatives to the Lévy walk such as the
Cédric Sueur
doaj   +1 more source

Levy Systems for Time-Changed Processes

open access: yesThe Annals of Probability, 1977
After a study of the process $Y$, obtained from a right process $X$ by time-changing it with respect to a continuous additive functional $A$, we relate the jumps of $Y$ in $\Phi = \operatorname{sup} A$ to the excursions of $X$ out of $\Phi$ and to the jumps of $X$ inside $\Phi$.
openaire   +3 more sources

On exit times of Levy-driven Ornstein–Uhlenbeck processes [PDF]

open access: yesStatistics & Probability Letters, 2008
We prove two martingale identities which involve exit times of Levy-driven Ornstein--Uhlenbeck processes. Using these identities we find an explicit formula for the Laplace transform of the exit time under the assumption that positive jumps of the Levy process are exponentially distributed.
Borovkov, Konstantin, Novikov, Alexander
openaire   +3 more sources

ADNP‐Related Helsmoortel–Van der Aa Syndrome: A Review of the Literature and Clinical Recommendations for Assessment and Monitoring

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT ADNP‐related Helsmoortel–Van der Aa syndrome (ADNP‐related HVDAS) is a single gene form of autism spectrum disorder (ASD) caused by pathogenic sequence variants in the activity‐dependent neuroprotective protein (ADNP) gene. In addition to ASD, ADNP‐related HVDAS is associated with a wide range of cognitive, behavioral, and physical health ...
Jarrett Fastman   +11 more
wiley   +1 more source

Revisiting reverberation

open access: yesActa Acustica
In 1992, the author proposed a generalization of the Sabine formula that develops reverberation time over a series of powers of the reflection coefficient on the boundaries.
Polack Jean-Dominique
doaj   +1 more source

The Growth of Random Walks and Levy Processes

open access: yesThe Annals of Probability, 1981
Let $\{X_i\}$ be a sequence of independent, identically distributed non-degenerate random variables taking values in $\mathbb{R}^d$ and $S_n = \sum^n_{i = 1} X_i, M_n = \max_{1\leqq i \leqq n} |S_i|$. Define for $x > 0, G(x) = P\{| X_1 | > x\}, K(x) = x^{-2}E(| X_1 |^2 1\{| X_1 | \leq x\}), M(x) = x^{-1} |E(X_1 1\{| X_1 | \leq x\})|,$ and $h(x) = G(x) +
openaire   +3 more sources

Collisions of Lévy processes [PDF]

open access: yesProceedings of the American Mathematical Society, 1989
Let X , Y X,Y
openaire   +1 more source

The Legislation for Providing Animal Access in Australian Residential Aged Care: It's Not a Zoo

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT Providing meaningful animal contact to residential aged care facility (RACF) residents is problematic due to a lack of animal policies and National Guidelines. This paper examines how Australian Legislation could influence access to animal contact in RACFs and aims to answer the question, ‘Could current Legislation facilitate the development ...
Wendy Newton   +2 more
wiley   +1 more source

Adaptive Lévy processes and area-restricted search in human foraging. [PDF]

open access: yesPLoS ONE, 2013
A considerable amount of research has claimed that animals' foraging behaviors display movement lengths with power-law distributed tails, characteristic of Lévy flights and Lévy walks.
Thomas T Hills   +2 more
doaj   +1 more source

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