Results 91 to 100 of about 5,570,536 (255)

THE RIEMANN PROBLEM FOR APPELL'S F4

Memoirs of the Faculty of Science, Kyusyu University. Series A, Mathematics, 1993
Appell's system of differential equations of type \[ (F_ 4): \begin{cases} x(1- x) r-y^ 2 t-2xys+ \{\gamma- (\alpha+\beta+1) x\} p-(\alpha+ \beta+1) yq- \alpha\beta z=0\\ y(1-y)t- x^ 2 r-2xys+ \{\gamma'- (\alpha+\beta+1) y\} q-(\alpha+ \beta+ 1)xp- \alpha\beta z=0 \end{cases} \] has singularities along \(S:\{x=0\}\cup \{y=0\}\cup \{(x-y)^ 2- 2(x+y)+1 ...
openaire   +3 more sources

The Development of the European Sleep Questionnaire A New Patient‐Reported Outcome Measure

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep medicine relies on patient‐reported outcome measures (PROMs) to complement clinical interviews and objective sleep tests. Available sleep questionnaires focus on isolated symptoms or single disorders, limiting their ability to capture the complexity of sleep conditions. Also, many PROMs remain poorly validated.
Dirk A. Pevernagie, Marie De Bruecker, Elke Veirman, Geert Crombez, Dimitri M. L. Van Ryckeghem, Katrien Hertegonne, Fré A. Bauters, Inger L. Abma, Erna Sif Arnardottir, Ludger Grote, Jan Hedner, Anna Sigridur. Islind, Kamilla Rún Jóhannsdóttir, Gert Jan Lammers, Walter T. McNicholas, Piet‐Heijn van Mechelen, Kristín Anna Ólafsdóttir, Sebastiaan Overeem, Dieter Riemann, Reijo Sund, An Mariman   +20 more
wiley   +1 more source

A Riemann-integrál és alkalmazásai

, 2021
Dolgozatom témája a Riemann-integrál és annak alkalmazásai. A bevezetést követően egy rövid összefoglalásban megismerkedhetünk a Riemann-integrál kialakulásának főbb mérföldköveivel és azokkal a jeles tudósokkal, akik nevéhez fűződnek.
Harázi, Péter
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Effect of Sleep, Sleep Apnoea and Insomnia Symptoms on Depressive Symptoms in Combined harmonised Community‐Based Cohorts—A Cross‐Sectional Analysis

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep and sleep disturbances, such as sleep apnoea and insomnia, are linked to mental health, particularly, depressive symptoms. It remains unclear however, if sleep fragmentation or hypoxia is primarily linked to depressive symptoms and how insomnia symptoms affect this relationship in samples free of clinical referral bias. We analysed cross‐
Jenny Theorell‐Haglöw, Gary A. Wittert, Robert J. Adams, Sarah L. Appleton, Ulf Hammar, Amy C. Reynolds, Nathaniel S. Marshall   +6 more
wiley   +1 more source

A nonlocal problem for fourth order hyperbolic equations with multiple characteristic

Electronic Journal of Differential Equations, 2002
In this paper, we study fourth order differential equations with multiple characteristics and dominated low terms. We prove the existence and uniqueness of a Riemann function for this equation, and then provide an integral representation of the general ...
Bidzina Midodashvili
doaj  

Insomnia Symptoms Co‐Fluctuate With Depression and Posttraumatic Stress Disorder Symptoms From Pre‐ To 10 Years Post‐Deployment in Military Personnel

Journal of Sleep Research, EarlyView.
In deployed military personnel, insomnia, PTSD and depression symptoms were strongly associated both between and within individuals over time. Symptoms tended to co‐fluctuate rather than predict one another, indicating that shared vulnerability factors may underlie these mental health outcomes.
Bastiaan Bruinsma, Eric Vermetten, Elbert Geuze   +2 more
wiley   +1 more source

Konform geometria Riemann-Finsler típusú metrikus tereken = Conform geometry of spaces with Riemann-Finsler metrics [PDF]

, 2010
Témánk az ún. Finsler-terek konform geometriája, különös tekintettel speciális tértípusok konform ekvivalenciájára. Egy sokaság Finsler-tér, ha az érintővektorok hosszát egy nem feltétlenül belső szorzatból származó funkcionálsereg segítségével mérni ...
Vincze, Csaba
core   +1 more source

Integral de Riemann no Rn [PDF]

, 2004
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Matemática.Neste trabalho, estudamos a Integral de Riemann, seus aspectos históricos e sua construção. Mostramos os teoremas de Darboux e Riemann
Leal Junior, Luiz Carlos
core  

Band‐Pass Filtering With High‐Dimensional Time Series. A Synthetic Indicator of the Medium‐to‐Long Run Component of Growth

Journal of Time Series Analysis, EarlyView.
ABSTRACT The paper deals with the construction of a synthetic indicator of economic growth, obtained by projecting a quarterly measure of aggregate economic activity, namely gross domestic product (GDP), into the space spanned by a finite number of smooth principal components, representative of the medium‐to‐long‐run component of economic growth of a ...
Alessandro Giovannelli, Marco Lippi, Tommaso Proietti   +2 more
wiley   +1 more source

Uma generalização da Integral de Riemann [PDF]

, 1999
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Matemática e Computação Científica.Neste trabalho, estudamos uma modificação da Integral de Riemann, a Integral ...
Pereira, Maria Elita
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