Results 71 to 80 of about 67,078 (181)
Journal of Sleep Research, EarlyView.ABSTRACT Slow‐wave sleep (SWS; stage N3) is often reported as reduced in depression, yet variability across depressive phenotypes remains poorly characterised. This study aimed to determine whether N3 architecture—proportion, duration, and latency—identifies clinically distinct profiles in major depressive episode (MDE).
Antoine Salmeron +8 more
wiley +1 more source
Spectral properties and conformal type of surfaces
Anais da Academia Brasileira de Ciências, 2002 In this short note, we announce a result relating the geometry of a riemannian surface to the positivity of some operators on this surface (the operators considered here are of the form surface Laplacian plus a scalar multiple of the curvature function).
PHILIPPE CASTILLON
doaj +1 more source
Inference on the Attractor Space via Functional Approximation
Oxford Bulletin of Economics and Statistics, EarlyView.ABSTRACT This paper discusses semiparametric inference on hypotheses on the cointegration and the attractor spaces for I(1)$$ I(1) $$ linear processes with moderately large cross‐sectional dimension. The approach is based on sample canonical correlations and functional approximation of Brownian motions, and it can be applied both to the whole system ...
Massimo Franchi, Paolo Paruolo
wiley +1 more source
Newton flow of the Riemann zeta function: separatrices control the appearance of zeros
New Journal of Physics, 2014 A great many phenomena in physics can be traced back to the zeros of a function or a functional. Eigenvalue or variational problems prevalent in classical as well as quantum mechanics are examples illustrating this statement.
J W Neuberger +3 more
doaj +1 more source
Scandinavian Journal of Psychology, EarlyView.ABSTRACT There is growing interest in the role of cognitive flexibility in the development of politically motivated violence and a willingness to self‐sacrifice. However, the construct of flexibility has been applied in multiple ways across disciplines, resulting in conceptual ambiguity and methodological challenges.
Sebastian Deverson +2 more
wiley +1 more source
A version of Carleman’s formula summation of the Riemann ζ -function on the critical line [PDF]
Математичні Студії, 2011 A version of Carleman's formula for functions holomorphic in a rectangle is proved. It is applied to the evaluation of the integral of ζ -function logarithm with the summing factor exp(−t) along the critical line.
A. M. Brydun, P. A. Yatsulka
doaj
On a solution to a functional equation
, 2018 We offer a solution to a functional equation using properties of the Mellin transform. A new criteria for the Riemann Hypothesis is offered as an application of our main result, through a functional relationship with the Riemann xi ...
Patkowski, Alexander E
core
Likelihood Estimation for Stochastic Differential Equations with Mixed Effects
Scandinavian Journal of Statistics, EarlyView.ABSTRACT Stochastic differential equations provide a powerful tool for modelling dynamic phenomena affected by random noise. When time series are observed for several experimental units, it is often the case that some of the parameters vary between the individual experimental units.
Fernando Baltazar‐Larios +2 more
wiley +1 more source
MathematicsThe Riemann Hypothesis (RH) asserts that all non-trivial zeros of the Riemann zeta function lie on the critical line Re(s) = 0.5, yet no general proof exists despite extensive numerical verification.
Shianghau Wu
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Brain and Behavior, Volume 16, Issue 5, May 2026.This study reveals significant neuroplastic changes in cortical EEG activity post total hip/knee arthroplasty in osteoarthritis patients, with increased low alpha and theta power over frontocentral/parietal regions during rest and motor imagery. These alterations accompany functional improvements (HHS/KSS), suggesting qEEG's potential for monitoring ...
Pawel Piotr Dobrakowski +1 more
wiley +1 more source