scholarly journals Prophet-Based Research on the Medium and Long-Term Forecast Method of the F10.7 Flux of the Sun

2021 ◽  
Vol 2026 (1) ◽  
pp. 012051
Author(s):  
Shuqin Zhu
Keyword(s):  
The Sun ◽  
Forecast Method ◽  
Term Forecast

A New Long-Term Forecast Method of Wind Power

2014 ◽  
Vol 950 ◽  
pp. 214-220
Author(s):  
Ying Lin
Keyword(s):  
Wind Power ◽  
Sampling Interval ◽  
Neutral Network ◽  
Forecast Method ◽  
Term Forecast ◽  
Long Time

We forecast wind power in a way combining wavelet neutral network and rolling forecast. At the same time, we build a system of forecast deviation. Then we use some data to test our model, which yields a desirable result. In addition, we are informed that our method can predict wind power correctly in a long time and short sampling interval can lead to a better result than long sampling interval.

Long-term forecast method for ice disasters on power grids

2018 ◽  
Vol 155 ◽  
pp. 108-119 ◽  
Author(s):  
Jiazheng Lu ◽  
Jun Guo ◽  
Xunjian Xu ◽  
Li Yang
Keyword(s):  
Power Grids ◽  
Forecast Method ◽  
Term Forecast

scholarly journals ESTIMATION OF PERIOD OF LONG-TERM OSCILLATIONS OF FACULAR FORMATIONS ON THE SUN

2019 ◽  
Author(s):  
P.V. Strekalova ◽  
◽  
A.A. Solov’ev ◽  
V.V. Smirnova ◽  
Y.A. Nagovitsyn ◽  
...  
Keyword(s):  
The Sun

scholarly journals Closing up onto our sun: solar imaging

2020 ◽  
Vol 240 ◽  
pp. 07011
Author(s):  
Kushagra Shrivastava ◽  
Keith Wen Kai Chia ◽  
Kang Jun Wong ◽  
Alfred Yong Liang Tan ◽  
Hwee Tiang Ning
Keyword(s):  
Solar Activity ◽  
The Sun ◽  
Research Needs ◽  
Large Numbers ◽  
Wide Range ◽  
Future Science ◽  
Insight Into ◽  
Term Data ◽  
Made In

Solar activity research provides insight into the Sun’s past, future (Science Daily, 2018). The solar activity includes observations of large numbers of intense sunspots, flares, and other phenomena; and demands a wide range of techniques and measurements on the observations. This research needs long term data collection before critical analyses can occur, to generate meaningful learning and knowledge. In this project, we will use solar imaging to make observations of solar activity, and take our baby steps to make contributions in citizen science. Observations will be made in 3 wavelengths to gain a more thorough analysis by looking at different perspectives of the Sun, namely H-Alpha, Calcium-K, and white light.

scholarly journals Long-term evolution of coronal holes on the Sun and occurrence frequencies of magnetic storms with gradual commencements

2021 ◽  
Vol 2103 (1) ◽  
pp. 012038
Author(s):  
S Veretenenko ◽  
M Ogurtsov ◽  
V Obridko ◽  
A Tlatov
Keyword(s):  
Coronal Holes ◽  
Long Term Evolution ◽  
Magnetic Storms ◽  
Time Shift ◽  
Time Interval ◽  
The Sun ◽  
Close Link ◽  
Sunspot Numbers ◽  
Term Evolution

Abstract Long-term evolution of areas with open configuration of magnetic field (coronal holes) on the Sun reconstructed on the basis of H-alpha synoptic charts for the period 1887-2016 was studied and compared with annual occurrence frequencies of magnetic storms with gradual (GC) commencements. It was found that correlation between yearly values of coronal hole (CH) areas and sunspot numbers with no time shift is negative and not strong, but increases up to ∼0.6-0.7 when CH areas are delayed by 4-5 years relative to sunspot numbers. Temporal variations of CH areas in the Northern and Southern hemispheres are characterized by dominant ∼11-year periodicities; however, they differ significantly on the multidecadal time scale. The wavelet spectra of CH areas in the Southern hemisphere, unlike those in the Northern one, reveal persistent periodicities of ∼30-35 years on the studied time interval. Similar periodicities of ∼30-35 years are observed in annual occurrences of GC magnetic storms which are caused by high-speed streams of solar wind from coronal holes. The results of cross wavelet analysis of annual occurrence frequencies of GC magnetic storms and areas of coronal holes revealed common periodicities ∼11, ∼35 and ∼60 years which confirmed a close link of these storms with the evolution of large-scale magnetic fields on the Sun.

TRIZ Evolution Theory Applied to Man-Made Boards

2013 ◽  
Vol 441 ◽  
pp. 1060-1063
Author(s):  
Hui Ling Yu ◽  
Hao Liang ◽  
De Lin Fan
Keyword(s):  
Life Cycle ◽  
Technology Development ◽  
Evolution Theory ◽  
Niche Space ◽  
Waste Wood ◽  
Term Forecast ◽  
Technology Life Cycle ◽  
S Curve ◽  
Current Stage

Man-made boards often made use of waste wood materials. China is one of the worlds largest manufacturers and consumers of man-made board applications. Application of the law of evolution with a S-shaped curve could contribute essentially to the accuracy of the long-term forecast. This research seeks to determine the current stage and the position on the S-curve of man-made board technology in China on the TRIZ evolution theory and introduce a methodology which combines patent analysis and technology life cycle forecasting to find a niche space of man-made technology development in China.

USE OF REGRESSION ANALYSIS IN FORECAST TASKS

2020 ◽  
pp. 22-27
Author(s):  
E.S. Lartseva ◽  
◽  
A.D. Kuznetsova
Keyword(s):  
Regression Analysis ◽  
Animal Population ◽  
Short Term ◽  
Statistical Estimates ◽  
Term Forecast ◽  
Applied Software ◽  
The Family ◽  
The Russian Federation

Based on official statistics on the number, of representatives of the family of non-ruminant cloven-hoofed animals (Artiodactyl) on the territory of the Russian Federation. Using the example of two species: domestic pigs and wild boars, the dynamics of the indicator for the long term is analyzed. Multidirectional trends were revealed for each species. Mathematical models of the dynamics of the livestock were obtained using the methods of regression analysis and applied software. Statistical estimates of the quality of animal population models were obtained. The short-term forecast for 2020 has been fulfilled.

Sign in / Sign up

Export Citation Format

Share Document