Results 21 to 30 of about 188,725,496 (291)

DNA variation in the SNAP25 gene confers risk to ADHD and is associated with reduced expression in prefrontal cortex [PDF]

open access: yes, 2013
This work was part funded by the MRC.Background: The Coloboma mouse carries a similar to 2 cM deletion encompassing the SNAP25 gene and has a hyperactive phenotype similar to that of ADHD.
Matthews, Natasha   +35 more
core   +2 more sources

Variational representations of Varadhan functionals [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
Motivated by the theory of large deviations, we introduce a class of non-negative non-linear functionals that have a variational “rate function" representation.
Bell, Harold, Bryc, Włodzimierz
openaire   +2 more sources

Site-Level Variation in Parrotfish Grazing and Bioerosion as a Function of Species-Specific Feeding Metrics

open access: yesDiversity, 2020
Parrotfish provide important ecological functions on coral reefs, including the provision of new settlement space through grazing and the generation of sediment through bioerosion of reef substrate.
Ines D Lange   +5 more
doaj   +1 more source

Temporal and Spatial Variation of Soil Bacteria Richness, Composition, and Function in a Neotropical Rainforest. [PDF]

open access: yesPLoS ONE, 2016
The high diversity of tree species has traditionally been considered an important controller of belowground processes in tropical rainforests. However, soil water availability and resources are also primary regulators of soil bacteria in many ecosystems.
Stephanie N Kivlin, Christine V Hawkes
doaj   +1 more source

Control Variates as Screening Functions [PDF]

open access: yesProceedings of the 3rd International Conference on Performance Evaluation Methodologies and Tools, 2008
Suppose that the mean μ = E[F(X)] of a given function F: ℝ → ℝ is to be estimated by the empirical average Sn: = 1/nΣi=1n F(Xi) of the values F(Xi), where X1,X2, ..., Xn are independent samples distributed like X. In cases when the mean v = E[U(X)] of a different function U: ℝ → ℝ is known, we introduce a sampling rule, called the "screened estimator,"
Sofia Kyriazopoulou-Panagiotopoulou   +2 more
openaire   +1 more source

Aspects of Linguistic Variation [PDF]

open access: yes, 2018
This volume brings together papers on linguistic variation. It takes a broad perspective, covering not only crosslinguistic and diachronic but also intralinguistic and interspeaker variation, and examines phenomena ranging from negation and TAM over ...

core   +1 more source

First Order Hadamard Variation of the Harmonic Navigation Function on a Sphere World

open access: yesMathematical and Computational Applications, 2018
Planning conflict-free trajectories is a long-standing problem in Air Traffic Management. Navigation functions designed specifically to produce flyable trajectories have been previously considered, but lack the robustness to uncertain weather conditions ...
Isabelle Santos   +2 more
doaj   +1 more source

Offshore wind energy: modal analysis of a jacket-type substructure as a function of soil variation [PDF]

open access: yesREM: International Engineering Journal
This study presents a modal analysis of a jacket-type substructure supporting a 15 MW offshore wind turbine, aiming to assess the influence of geotechnical soil variability on the foundation’s dynamic response. Three representative soil profiles from the
Mikelly Pinheiro Garcia   +1 more
doaj   +1 more source

Technical note: Discharge response of a confined aquifer with variable thickness to temporal, nonstationary, random recharge processes [PDF]

open access: yesHydrology and Earth System Sciences, 2021
This work develops a transfer function to describe the variation in the integrated specific discharge in response to the temporal variation in the rainfall event in the frequency domain.
C.-M. Chang   +4 more
doaj   +1 more source

Forecasting of a technical product state using the regression function and the variation coefficient

open access: yesVojnotehnički Glasnik, 1997
In the process of the development, manufacture and use of technical pro­ducts an important place has the control and forecast (prediction) of the quality and reliability characteristics.
Slavko Tomović
doaj   +1 more source

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