Results 21 to 30 of about 5,545,929 (198)

Effect of Trends on Detrended Fluctuation Analysis [PDF]

open access: yes, 2001
Detrended fluctuation analysis (DFA) is a scaling analysis method used to estimate long-range power-law correlation exponents in noisy signals. Many noisy signals in real systems display trends, so that the scaling results obtained from the DFA method ...
A. Bunde   +62 more
core   +2 more sources

Trend Analysis for the Cooling Period for Sea Water Temperatures in Aegean and Mediterranean Coasts

open access: yesDoğal Afetler ve Çevre Dergisi, 2019
In trend studies, classical approaches such as regression analysis and frequently used Mann-Kendall (MK) methods are bound to lose their usage due to their limitations and assumptions, due to their inability to meet their requirements in terms of binding
Eyüp Şişman
doaj   +1 more source

Drought indices and trend analysis

open access: yesSelected Scientific Papers: Journal of Civil Engineering, 2020
In recent times, extremely dry seasons have been occurring more and more often in the eastern Slovakia, alternating with extremely wet seasons like torrential floods from extreme rainfall.
Nagy Patrik, Zeleňáková Martina
doaj   +1 more source

Analysis of groundwater level trend in Jakham River Basin of Southern Rajasthan

open access: yesJournal of Groundwater Science and Engineering, 2022
Groundwater accounts for about half of the water use for irrigation in India. The fluctuation pattern of the groundwater level is examined by observing rainfall replenishment and monitoring wells.
Vinay Kumar Gautam   +4 more
doaj   +1 more source

From Trend Analysis to Virtual World System Design Requirement Satisfaction Study

open access: yes, 2020
Virtual worlds have become global platforms connecting millions of people and containing various technologies. The development of technology, shift of market value, and change of user preference shape the features of virtual worlds.
Cai, Hongming   +5 more
core   +1 more source

Extracting and analyzing the warming trend in global and hemispheric temperatures [PDF]

open access: yes, 2017
This article offers an updated and extended attribution analysis based on recently published versions of temperature and forcing datasets. It shows that both temperature and radiative forcing variables can be best represented as trend stationary ...
Estrada, Francisco, Perron, Pierre
core   +3 more sources

Fractal Analysis of River Flow Fluctuations (with Erratum) [PDF]

open access: yes, 2006
We use some fractal analysis methods to study river flow fluctuations. The result of the Multifractal Detrended Fluctuation Analysis (MF-DFA) shows that there are two crossover timescales at $s_{1\times}\sim12$ and $s_{2\times}\sim130$ months in the ...
Alados   +72 more
core   +2 more sources

Detection of recent changes in Gambia vegetation cover using time series modis ndvi

open access: yesBelgeo, 2021
In The Gambia, the vegetation cover has undergone significant changes over the past two decades. To assist policy decision-making, this study seeks to detect trends in changes over the past two decades using a time series of NDVI MODIS images.
Boubacar Solly   +4 more
doaj   +1 more source

Statistical Analysis of the Impact of Application of the European Union Rules on the Number of Death from Traffic Accidents and the CO Pollution [PDF]

open access: yesOvidius University Annals: Economic Sciences Series, 2021
In the context of introducing the latest rules for traffic monitoring, new types of cars propulsion, and security systems, a significant change in the trends of human life lost in car accidents and diminishing CO pollution are expected.
Alina Barbulescu   +1 more
doaj  

Trends in Environmental Analysis [PDF]

open access: yesAnalytical Chemistry, 2005
This article discusses developments in environmental analytical chemistry that occurred in the years of 2003 and 2004. References were found by searching the ''Science Citation Index and Current Contents''. As in our review of two years ago (A1), techniques are highlighted that represent current trends and state-of-the-art technologies in the sampling,
Koester, C. J., Moulik, A.
openaire   +2 more sources

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