Results 151 to 160 of about 1,057 (192)
Some of the next articles are maybe not open access.
SSRN Electronic Journal, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MARCHETTI, Enrico, BUSATO, Francesco
openaire +3 more sources
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MARCHETTI, Enrico, BUSATO, Francesco
openaire +3 more sources
Economic Theory, 2003
This paper shows new properties about the equilibria of a stationary OG economy by establishing a connection between its stationary equilibria and those of a finite economy, with and without extrinsic uncertainty. Specifically, it shows the countability and local uniqueness with respect to the sup metric of the so-called sunspot cycles introduced here,
openaire +2 more sources
This paper shows new properties about the equilibria of a stationary OG economy by establishing a connection between its stationary equilibria and those of a finite economy, with and without extrinsic uncertainty. Specifically, it shows the countability and local uniqueness with respect to the sup metric of the so-called sunspot cycles introduced here,
openaire +2 more sources
Group Sunspot Numbers: Sunspot Cycle Characteristics
Solar Physics, 2002We examine the "Group" sunspot numbers constructed by Hoyt and Schatten to determine their utility in characterizing the solar activity cycle. We compare smoothed monthly Group Sunspot Numbers to Zurich (International) Sunspot Numbers, 10.7-cm radio flux, and total sunspot area.
David H. Hathaway +2 more
openaire +1 more source
Cycles and sunspot: The Poincaré-Hopf approach
Journal of Mathematical Economics, 1996This paper deals with the existence of stationary sunspot equilibria (SSE) of finite order in an n-commodity economy. We first provide a simple condition that is sufficient for the existence of SSE associated with any given Markov matrix. This condition encompasses and extends previous results by Guesnerie (Journal of Economic Theory, 1986, 40, 103–128)
Chiappori, Pierre-Andre, Davila, Julio
openaire +3 more sources
Nature, 1986
Fossil records of presumed solar activity1,2 in 680-Myr-old varves reveal two periods, ∼314 and 350 varve years respectively, which also appear in recent sunspot records. These periodicities, combined with a nonlinear feature of sunspot number and a theory of the asymmetry of the solar cycle, enable the sunspot record to be extrapolated back to 1800 so
openaire +1 more source
Fossil records of presumed solar activity1,2 in 680-Myr-old varves reveal two periods, ∼314 and 350 varve years respectively, which also appear in recent sunspot records. These periodicities, combined with a nonlinear feature of sunspot number and a theory of the asymmetry of the solar cycle, enable the sunspot record to be extrapolated back to 1800 so
openaire +1 more source
Journal of Geophysical Research, 1954
Indication that the long series of sunspot cycles is beginning to repeat itself within recorded data has renewed interest in the question of the components which are involved. One difficulty encountered in previous attempts at isolating the components has been in not basing the analysis on an integral number of cycles.
openaire +1 more source
Indication that the long series of sunspot cycles is beginning to repeat itself within recorded data has renewed interest in the question of the components which are involved. One difficulty encountered in previous attempts at isolating the components has been in not basing the analysis on an integral number of cycles.
openaire +1 more source
Sunspots Rotation Rate and Sunspot Cycle
2005International ...
Mouradian, Zadig, Heristchi, Djamshid
openaire +1 more source
Periodicities in the sunspot cycle
Vistas in Astronomy, 1987Abstract The existence of the eleven-year sunspot cycle has been known for many years. Since the first compilation of sunspot records, there has been sustained interest in detecting other periodicities in sunspot data. Statistical analyses of sunspot counts have indicated the presence of a number of different periodicities with wavelengths ranging ...
openaire +1 more source
Study of sunspots and sunspot cycles 1-24
2010Sunspots are the most obvious feature on the disturbed surface of the photosphere above the solar atmosphere and appear to play a key role in major solar and terrestrial disturbances. The solar source activity varies with a 11-year sunspot cycle. During solar activity maximum years, maximum transient solar activity (i.e.
Pandey, S. K. +5 more
openaire +2 more sources
Journal of the Royal Statistical Society. Series A (General), 1977
SUMMARY The problem of forecasting the development of the well-known sunspot cycle of approximately 11 years from observations made early in the cycle is considered. Each cycle is described by a member of a family of curves with different parameters for each cycle.
openaire +1 more source
SUMMARY The problem of forecasting the development of the well-known sunspot cycle of approximately 11 years from observations made early in the cycle is considered. Each cycle is described by a member of a family of curves with different parameters for each cycle.
openaire +1 more source