Results 41 to 50 of about 4,486,622 (282)

Gradual onset of the Maunder Minimum revealed by high-precision carbon-14 analyses

open access: yesScientific Reports, 2021
The Sun exhibits centennial-scale activity variations and sometimes encounters grand solar minimum when solar activity becomes extremely weak and sunspots disappear for several decades.
Hiroko Miyahara   +6 more
doaj   +1 more source

Solar energetic particle events: phenomenology and prediction

open access: yes, 2002
Solar energetic particle events can cause major disruptions to the operation of spacecraft in earth orbit and outside the earth's magnetosphere and have to be considered for EVA and other manned activities. They may also have an effect on radiation doses
Patrick, G.J.   +4 more
core   +1 more source

Nonlinear Data Assimilation: Towards a Prediction of the Solar Cycle [PDF]

open access: yes, 2013
The solar cycle is the cyclic variation of solar activity, with a span of 9-14 years. The prediction of the solar cycle is an important and unsolved problem with implications for communications, aviation and other aspects of our high-tech society.
Svedin, Andreas
core   +1 more source

Optimal Data Transfer of SEH-WSN Node via MDP Based on Duty Cycle and Battery Energy

open access: yesIEEE Access, 2021
Applications in wireless sensor networks (WSNs) are rapidly spreading out over the world. The one critical point of WSNs is energy consumption, where the transmitted data is limited by battery energy.
Kanok Charoenchaiprakit   +2 more
doaj   +1 more source

Size of the coming solar cycle 24 based on Ohl's Precursor Method, final estimate [PDF]

open access: yesAnnales Geophysicae, 2010
In Ohl's Precursor Method (Ohl, 1966, 1976), the geomagnetic activity during the declining phase of a sunspot cycle is shown to be well correlated with the size (maximum sunspot number Rz(max)) of the next cycle.
R. P. Kane
doaj   +1 more source

Multi-Scale Modelling of a Solar Reactor for the High-Temperature Step of a Sulphur-Iodine-Based Water Splitting Cycle [PDF]

open access: yes, 2011
The 3-step sulphur-iodine-based thermochemical cycle for splitting water is considered. The high temperature step of the closed-material cycle consists of evaporation, decomposition, and reduction of sulphuric acid to SO2 using concentrated solar process
Roeb, Martin   +11 more
core   +2 more sources

An Adaptive Inhibitory WSe2 Transistor for Retinomorphic In‐Sensor Image Processing

open access: yesAdvanced Functional Materials, EarlyView.
Conventional retinomorphic devices typically require deliberate gate‐bias tuning for each illumination condition. In this paper, we demonstrate an adaptive inhibitory WSe2 transistor that uses photo‐induced regime shift between the subthreshold and accumulation modes to achieve decision‐free, intensity‐adaptive image processing within a single pixel ...
Juhwan Baek   +12 more
wiley   +1 more source

Lessons learned from predictions of Solar Cycle 24

open access: yesJournal of Space Weather and Space Climate, 2020
Solar Cycle 24 has almost faded and the activity of Solar Cycle 25 is appearing. We have learned much about predicting solar activity in Solar Cycle 24, especially with the data provided by SDO and STEREO.
Pesnell W. Dean
doaj   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park   +7 more
wiley   +1 more source

Survey of solar cycle prediction models [PDF]

open access: yes, 1967
Survey of prediction techniques for solar cycle ...
Scissum, J. A.
core  

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