Results 101 to 110 of about 11,401 (255)

Riemann boundary value problem on periodic non-rectifiable curve [PDF]

, 2020
© 2016 Informa UK Limited, trading as Taylor & Francis Group.We solve the Riemann boundary value problem for holomorphic functions on a periodic non-rectifiable curve.
Kats B., Katz D.
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A Riemann–Hilbert approach to solution of the modified focusing complex short pulse equation

Frontiers in Applied Mathematics and Statistics
We develop a Riemann–Hilbert approach to the modified focusing complex short pulse (mfcSP) equationuxt=u+12u¯(u2)xxwith zero boundary conditions (as |x| → ∞).
Ruslan Barkov, Dmitry Shepelsky, Dmitry Shepelsky   +2 more
doaj   +1 more source

Anthropometric differences between twins at birth and their association with later cognitive performance

Journal of Child Psychology and Psychiatry, EarlyView.
Background Past studies indicate significant associations between birth anthropometrics, such as relative birthweight or head circumference, and later cognitive performance. Using twin data, we investigated whether these associations are confounded by genetic and environmental factors.
Robert Eves, Marco Deppe, Christian Kandler, Bastian Mönkediek, Sakari Lemola   +4 more
wiley   +1 more source

Contingent capital: A tale of two valuations

Journal of Risk and Insurance, EarlyView.
Abstract This study investigates the valuation gap between buyers and sellers of insurers' contingent capital, driven by asymmetric exposures to tax benefits, capital injections, and bankruptcy costs. We develop a novel Twin‐Tree Model with Jumps (TTMJ) that models the insurer's asset value dynamics by incorporating catastrophe risk, insolvency risk ...
Tian‐Shyr Dai, Chien‐Ling Lo, You‐Jia Sun, Hao‐Han Chang   +3 more
wiley   +1 more source

Riemann--Hilbert Problems [PDF]

, 2019
These lectures introduce the method of nonlinear steepest descent for Riemann-Hilbert problems. This method finds use in studying asymptotics associated to a variety of special functions such as the Painlevé equations and orthogonal polynomials, in solving the inverse scattering problem for certain integrable systems, and in proving universality for ...
openaire   +3 more sources

Chronic insomnia, REM sleep instability and emotional dysregulation: A pathway to anxiety and depression?

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary The world‐wide prevalence of insomnia disorder reaches up to 10% of the adult population. Women are more often afflicted than men, and insomnia disorder is a risk factor for somatic and mental illness, especially depression and anxiety disorders.
Dieter Riemann, Raphael J. Dressle, Fee Benz, Kai Spiegelhalder, Anna F. Johann, Christoph Nissen, Elisabeth Hertenstein, Chiara Baglioni, Laura Palagini, Lukas Krone, Michael L. Perlis, Katharina Domschke, Mathias Berger, Bernd Feige   +13 more
wiley   +1 more source

Riemann problem for the relativistic Chaplygin Euler equations [PDF]

, 2011
The relativistic Euler equations for a Chaplygin gas are studied. The Riemann problem is solved constructively. There are five kinds of Riemann solutions, in which four only contain different contact discontinuities and the other involves delta shock ...
Yang, Hanchun, Hongjun Cheng, Hanchun Yang, Cheng, Hongjun   +3 more
core   +1 more source

Feasibility and usability of three consecutive nights with self‐applied, home polysomnography

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary In‐laboratory polysomnography, the gold‐standard for diagnosing sleep disorders, is resource‐demanding and not conducive to multiple night evaluations. Ambulatory polysomnography, especially when self‐applied, could be a viable alternative. This study aimed to assess the feasibility and reliability of self‐applied polysomnography over three ...
Dimitri Ferretti, Anna S. Islind, Kristín A. Ólafsdóttir, Sigridur Sigurdardottir, Kamilla R. Jóhannsdóttir, Jan Hedner, Ludger Grote, Erna Sif Arnardottir   +7 more
wiley   +1 more source

Prescription of Psychotropic Drugs for Chronic Insomnia in Primary Care

Journal of Sleep Research, EarlyView.
ABSTRACT Insomnia is the most prevalent sleep disorder in adults, representing a major public health problem. Healthcare management in a specific area first requires analysing its current practices and issues. We conducted a retrospective observational study of over 100,000 patients from two large primary care databases in the public healthcare ...
Jesús Escribá‐Alepuz, Lidia Herrero‐Huertas, María García‐Gil, Estefanía Estévez‐López, Francisco Javier Puertas, Manuel de Entrambasaguas   +5 more
wiley   +1 more source

On the perturbed Riemann Problem in Extended Thermodynamics [PDF]

, 2006
In this paper we present some numerical results about Riemann problem and "perturbed" Riemann problem for hyperbolic systems with relaxation terms.
RUGGERI, TOMMASO ANTONIO, BRINI, FRANCESCA   +1 more
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