Results 41 to 50 of about 1,057 (192)

Revisiting the Question: The Cause of the Solar Cycle Variation of Total Solar Irradiance

open access: yesAdvances in Astronomy, 2019
The Mg II index and sunspot area are usually used to represent the intensification contribution by solar bright structures to total solar irradiance (TSI) and sunspot darkening, respectively.
N. B. Xiang
doaj   +1 more source

A Comparative Study of non-deep Learning, Deep Learning, and Ensemble Learning Methods for Sunspot Number Prediction

open access: yesApplied Artificial Intelligence, 2022
Solar activity has significant impacts on human activities and health. One most commonly used measure of solar activity is the sunspot number. This paper compares three important non-deep learning models, four popular deep learning models, and their five
Yuchen Dang, Ziqi Chen, Heng Li, Hai Shu
doaj   +1 more source

Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Through meticulous daily observation of the Sun’s large-scale magnetic field the Wilcox Solar Observatory (WSO) has catalogued two magnetic (Hale) cycles of solar activity.
Scott W. McIntosh   +4 more
doaj   +1 more source

Macular telangiectasia type 2 genetic risk variants associated with clinical characteristics in the Slovenian cohort

open access: yesActa Ophthalmologica, EarlyView.
Abstract Purpose Early diagnosis of macular telangiectasia type 2 (MacTel) remains challenging, and the contribution of genetic variation to its clinical heterogeneity is unclear. This study investigated associations between MacTel risk variants and clinical characteristics in a Slovenian cohort.
Ajda Kunčič   +4 more
wiley   +1 more source

Relation between Latitude-dependent Sunspot Data and Near-Earth Solar Wind Speed

open access: yesThe Astrophysical Journal, 2023
Solar wind is important for the space environment between the Sun and the Earth and varies with the sunspot cycle, which is influenced by solar internal dynamics.
Qirong Jiao   +3 more
doaj   +1 more source

Renal‐vascular axis: unmasking its role in vascular endothelial growth factor‐inhibitor vascular toxicity in cancer patients

open access: yesBritish Journal of Pharmacology, EarlyView.
Abstract Vascular toxicity is a growing concern in cancer patients receiving vascular endothelial growth factor inhibitor (VEGFi) therapy, posing a significant threat to patient prognosis. While the primary mechanism of VEGFi‐induced vascular toxicity is linked to redox‐sensitive reactions that disrupt vascular tone, leading to hypertension and ...
Grace Whelan, Karla B. Neves
wiley   +1 more source

Forecasting long-term sunspot numbers using the LSTM-WGAN model

open access: yesFrontiers in Astronomy and Space Sciences
The sunspot number, an indicator of solar activity, is vital for forecasting variations in solar activity and predicting disturbances of the geomagnetic field.
Hao Yang   +9 more
doaj   +1 more source

The proposed “Waldmeier discontinuity”: How does it affect to sunspot cycle characteristics?

open access: yesJournal of Space Weather and Space Climate, 2012
Recently, Svalgaard has proposed that Waldmeier introduced a discontinuity in the International Sunspot Number (ISN) around 1945. In this paper, we study some characteristics of the sunspot cycle using the classical ISN and the proposed version derived ...
Pérez Aparicio Alejandro Jesús   +2 more
doaj   +1 more source

On the periodic variations of geomagnetic activity indices Ap and ap [PDF]

open access: yesAnnales Geophysicae, 1998
Yearly averages of geomagnetic activity indices Ap for the years 1967–1984 are compared to the respective averages of ν2·Bs, where v is the solar wind velocity and Bs is the southward interplanetary magnetic field (IMF) component.
H. Schreiber, H. Schreiber
doaj   +1 more source

Geopolitical Risk and Domestic Bank Deposits

open access: yesFinancial Management, EarlyView.
ABSTRACT We investigate the relationship between global geopolitical risk and bank deposit flows across a wide panel of European countries. Motivated by the pivotal role of deposit stability for financial intermediation and systemic resilience, we explore whether geopolitical shocks alter depositors’ portfolio choices.
Dimitris Anastasiou   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy