11 papers · ranked by Valyu relevance
Lucas Brunel, Mathieu Balesdent, Loïc Brevault, Rodolphe Le Riche + 1 more
Estimating excursion set confidence regions seeks to identify regions where a function may exceed some threshold with a given confidence level. This paper focuses on estimating such confidence regions in cases where the function has random inputs and a functional output that is returned all at once. We develop a…
Thomas Maullin-Sapey, Fabian J. E. Telschow
In scientific disciplines such as neuroimaging, climatology, and cosmology it is useful to study the uncertainty of excursion sets of imaging data. While the case of imaging data obtained from a single study condition has already been intensively studied, confidence statements about the intersection, or union, of the…
Jiyue Qin, Samuel Davenport, Armin Schwartzman
Functional Magnetic Resonance Imaging (fMRI) is commonly used to localize brain regions activated during a task. Methods have been developed for constructing confidence regions of image excursion sets, allowing inference on brain regions exceeding non-zero activation thresholds. However, these methods have been limited…
Inés Armendáriz, Pablo Blanc, Pablo A. Ferrari, Davide Gabrielli
We study a piecewise constant function $η:\mathbb R\to\{-1,1\}$ with a finite number of discontinuities in any interval. We assume that the associated walk $ξ:\mathbb R\to\mathbb R$ satisfying $ξ'(x)=η(x)$, pinned by $ξ(0)=0$, has finite length excursions over past minima. This is the continuous generalization of an…
Nathan Findlay, Seshadri Nadathur
We present VERSUS, a publicly available, fast void-finding algorithm designed to identify spherical underdensities in the density field that can be accurately described by excursion set predictions of the void size function. We validate the algorithm against both a synthetic distribution of particles designed to trace…
Guilherme Fiusa, Pedro E. Harunari, Alberto J. B. Rosal, John M. Nichol + 1 more
We investigate the trajectory-level dynamics of a double quantum dot system using the newly developed formalism of stochastic excursions. This approach extends full counting statistics by enabling a filtering of complex trajectories into sub-trajectories, which provide access to the intricate correlations between…
Michael McAuley
Many classical objects of study related to the geometry/topology of smooth Gaussian fields (e.g. the volume, surface area or Euler characteristic of excursion sets) have a 'locality' property which is crucial to their analysis. More recently, progress has been made in studying 'non-local' quantities of such fields…
Nicolas Flores, Cédric Yves-Marie Morio
Introduction: Excessive pronation is still considered as a factor partially involved in the running-related injury risk despite inconsistent evidence. The between-runner variability and the way excessive pronation is quantified are potentially involved issues. The purpose of this study is to highlight the different…
Edwin D.H.M. Reuvers, A.J. ‘Knoek’ van Soest, Dinant A. Kistemaker
Performance during motor activities such as wheelchair riding, cycling, rowing and speed skating, depends critically on the average mechanical power output (AMPO) produced by the muscles. To maximise short-duration performance, limb movements should allow muscles to deliver maximal AMPO. However, it is unclear which…
Daniel S. Lank, Brandon D. Seltzer, Stefan R. Hargett, Rahul M. Reddy + 9 more
Adenosine is a widely distributed signaling molecule whose levels rise during conditions of metabolic stress, hypoxia, or inflammation. Adenosine is a homeostatic regulator of neuronal, cardiovascular, immune, and metabolic functions through activation of adenosine receptors. Here, we show that administration of…
Edwin D. H. M. Reuvers, Huub Maas, Wendy Noort, Maarten F. Bobbert + 2 more
The average mechanical power output (AMPO) over a stretch-shortening cycle produced by a muscle depends on muscle length and stimulation over time. While the effects of cycle frequency and muscle length excursion on AMPO are well-known, several questions remain about the effects of muscle length and stimulation over…