Results 1 to 10 of about 683,959 (300)
Inverted analemmatic sundial of the Bronze Age [PDF]
Archaeoastronomy and Ancient Technologies, 2022 This article describes the study, using the methods of digital and computational archeology, of a Bronze Age limestone slab with cup marks, discovered during the archaeological excavations of kurgan 1 of the kurgan grave field Prolom II, located in the ...
L.N. Vodolazhskaya
doaj +1 more source
Sundial-water clock of the Bronze Age (Northern Black Sea Region) [PDF]
Archaeoastronomy and Ancient Technologies, 2021 This article presents the results of a study of signs on a Bronze Age slab discovered in the vicinity of a heavily plowed mound near the settlement of Pyatikhatki. The slab belongs to the Dolmen archaeological culture.
Vodolazhskaya, L.N. +2 more
doaj +1 more source
Short Time Solar Power Forecasting Using Persistence Extreme Learning Machine Approach [PDF]
E3S Web of Conferences, 2021 Solar energy in nature is irregular, so photovoltaic (PV) power performance is intermittent, and highly dependent on solar radiation, temperature and other meteorological parameters.
Xiang Xiaoyan, Sun Yao, Deng Xiaofei
doaj +1 more source
Dynamic Time Warping as a Means of Assessing Solar Wind Time Series
The Astrophysical Journal, 2022 Abstract Over the last decades, international attempts have been made to develop realistic space weather prediction tools aiming to forecast the conditions on the Sun and in the interplanetary environment. These efforts have led to the development of appropriate metrics to assess the performance of those tools.
E. Samara +7 more
openaire +4 more sources
Survey Analysis of Solar Power Generation Forecasting [PDF]
E3S Web of Conferences, 2021 Solar power is the conversion of sunlight into electricity using solar photovoltaic cells as a source of energy. There are various applications for solar power; here is information on PV cell generation.
Erlapally Deekshitha +4 more
doaj +1 more source
Marks of heliacal rising of Sirius on the sundial of the Bronze Age [PDF]
Archaeoastronomy and Ancient Technologies, 2015 The article presents the results of multidisciplinary study carried out with the help of archaeological and astronomical methods. The aim of the study was to analyze and interpret the signs - elements of the composition, incised on the outer side surface
Vodolazhskaya, L.N. +2 more
doaj +1 more source
Comparison of chaotic aspects of magnetosphere under various physical conditions using AE index time series [PDF]
Annales Geophysicae, 2008 The deterministic chaotic behaviour of magnetosphere was analyzed, using AE index time series. The significant chaotic quantifiers like, Lyapunov exponent, spatio-temporal entropy and nonlinear prediction error for AE index time series under various ...
K. Unnikrishnan, K. Unnikrishnan
doaj +1 more source
Solar Cycle 25 Prediction Using N-BEATS
The Astrophysical Journal, 2023 Solar activities lead to Sun variation with an 11 yr periodicity. The periodic variation affects space weather and heliophysics research. So it is important to accurately predict solar cycle variations. In this paper, we predicted the ongoing Solar Cycle
Xu Su +4 more
doaj +1 more source
Delayed response of the global total electron content to solar EUV variations [PDF]
Advances in Radio Science, 2016 The ionospheric response to solar extreme ultraviolet (EUV) variability during 2011–2014 is shown by simple proxies based on Solar Dynamics Observatory/Extreme Ultraviolet Variability Experiment solar EUV spectra.
C. Jacobi +3 more
doaj +1 more source
Deep-Learning-Based Adaptive Model for Solar Forecasting Using Clustering
Energies, 2022 Accurate short-term solar forecasting is challenging due to weather uncertainties associated with cloud movements. Typically, a solar station comprises a single prediction model irrespective of time and cloud condition, which often results in suboptimal ...
Sourav Malakar +6 more
doaj +1 more source