Results 1 to 10 of about 40,255 (143)

Analysis of a fractal boundary: the graph of the Knopp function [PDF]

open access: yes, 2014
A usual classification tool to study a fractal interface is the computation of its fractal dimension. But a recent method developed by Y. Heurteaux and S.
Melot, Clothilde, Slimane, Mourad Ben
core   +4 more sources

Geometric functionals of fractal percolation

open access: yes, 2020
Fractal percolation exhibits a dramatic topological phase transition, changing abruptly from a dust-like set to a system spanning cluster. The transition points are unknown and difficult to estimate.
Klatt, Michael A., Winter, Steffen
core   +1 more source

Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]

open access: yes, 2011
Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel   +4 more
core   +2 more sources

Renewable sustainable biocatalyzed electricity production in a photosynthetic algal microbial fuel cell (PAMFC) [PDF]

open access: yes, 2008
Electricity production via solar energy capturing by living higher plants and microalgae in combination with microbial fuel cells are attractive because these systems promise to generate useful energy in a renewable, sustainable, and efficient manner ...
Buisman, C.J.N.   +3 more
core   +2 more sources

Greenberger-Horne-Zeilinger state protocols for fully connected qubit networks

open access: yes, 2009
We generalize the recently proposed Greenberger-Horne-Zeilinger (GHZ) tripartite protocol [A. Galiautdinov, J. M. Martinis, Phys. Rev. A 78, 010305(R) (2008)] to fully connected networks of weakly coupled qubits interacting by way of anisotropic ...
Andrei Galiautdinov   +6 more
core   +1 more source

Biotechnological aspects of sulfate reduction with methane as electron donor [PDF]

open access: yes, 2010
Biological sulfate reduction can be used for the removal and recovery of oxidized sulfur compounds and metals from waste streams. However, the costs of conventional electron donors, like hydrogen and ethanol, limit the application possibilities.
Lens, P.N.L.   +2 more
core   +2 more sources

The mean-square dichotomy spectrum and a bifurcation to a mean-square attractor [PDF]

open access: yes, 2014
The dichotomy spectrum is introduced for linear mean-square random dynamical systems, and it is shown that for finite-dimensional mean-field stochastic differential equations, the dichotomy spectrum consists of finitely many compact intervals. It is then
Doan, Thai Son   +2 more
core   +1 more source

Spontaneous variability of pre-dialysis concentrations of uremic toxins over time in stable hemodialysis patients [PDF]

open access: yes, 2017
Background and aim : Numerous outcome studies and interventional trials in hemodialysis (HD) patients are based on uremic toxin concentrations determined at one single or a limited number of time points.
Delrue, Willem   +7 more
core   +2 more sources

From imprecise probability assessments to conditional probabilities with quasi additive classes of conditioning events [PDF]

open access: yes, 2012
In this paper, starting from a generalized coherent (i.e. avoiding uniform loss) intervalvalued probability assessment on a finite family of conditional events, we construct conditional probabilities with quasi additive classes of conditioning events ...
Sanfilippo, Giuseppe
core   +1 more source

When Should You Adjust Standard Errors for Clustering?

open access: yes, 2017
In empirical work in economics it is common to report standard errors that account for clustering of units. Typically, the motivation given for the clustering adjustments is that unobserved components in outcomes for units within clusters are correlated.
Abadie, Alberto   +3 more
core   +1 more source

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