Results 51 to 60 of about 5,533,129 (112)

Time series modelling of sunspot numbers using long range cyclical dependence [PDF]

open access: yes
This paper deals with the analysis of the monthly structure of sunspot numbers using a new technique based on cyclical long range dependence. The results show that sunspot numbers have a periodicity of 130 months, but more importantly, that the series is
Luis A. Gil-Alana
core  

Clinical relevance and treatment possibilities of bipolar rapid cycling [PDF]

open access: yes, 2002
Bipolar rapid cycling (RC) is defined as 4 or more affective episodes within 1 year. It has been postulated that RC is related to a poor response to lithium, to the same extent as mixed episodes or other atypical symptoms of the illness.
Amann, B.   +4 more
core   +1 more source

An Alternative Approach to the Existence of Sunspot Equilibria [PDF]

open access: yes
This paper offers an alternative approach to the existence of sunspot equilibria. The economy has a single perishable good and fiat money within an overlapping generations framework with two possible extraneous events.
Haim Abraham
core  

Predictors of employment in bipolar disorder : a systematic review [PDF]

open access: yes, 2013
Background Severe work impairment can be present for a considerable proportion of the course of bipolar disorder (BD) and is costly for governments, services and individuals.
Marwaha, Steven   +4 more
core   +1 more source

Stable sunspot equilibria in a cash-in-advance economy [PDF]

open access: yes
We analyze a monetary model with flexible labor supply, cash-inadvance constraints and seigniorage-financed government deficits. If the intertemporal elasticity of substitution of labor is greater than one, there are two steady states, one determinate ...
Ramon Marimon   +2 more
core  

Joy’s Law, Anti-Hale classifications, and the evolution of emerging sunspot regions [PDF]

open access: yes, 2016
This thesis aims to use analysis of the time dependence of sunspot locations and other physical characteristics to provide an improved empirical basis for understanding solar magnetic fields.
McClintock, Bruce H.
core  

Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes [PDF]

open access: yes, 2013
We present observational evidence for the presence of MHD (magnetohydrodynamic) waves in the solar photosphere deduced from SOHO/MDI (Solar and Heliospheric Observatory/Michelson Doppler Imager) Dopplergram velocity observations.
Shelyag, S.   +14 more
core   +2 more sources

Decadal-centennial-scale solar-linked climate variations and millennial-scale internal oscillations during the Early Cretaceous. [PDF]

open access: yesSci Rep, 2022
Hasegawa H   +20 more
europepmc   +1 more source

Flare-production potential associated with different sunspot groups

open access: yes, 2017
In this study, we analysed different types (C, M, and X classes) of X-ray solar flares occurring in sunspot groups. The data cover 1996-2014 time interval, and a total of 4262 active regions (ARs) were included in the data set. We defined the solar-flare-
Yurchyshyn, V.   +6 more
core   +1 more source

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