Results 1 to 10 of about 44,097 (315)

FRACTIONAL INTEGRATION TOOLBOX. [PDF]

open access: yesFract Calc Appl Anal, 2013
The problems formulated in the fractional calculus framework often require numerical fractional integration/differentiation of large data sets. Several existing fractional control toolboxes are capable of performing fractional calculus operations, however, none of them can efficiently perform numerical integration on multiple large data sequences.
Marinov TM, Ramirez N, Santamaria F.
europepmc   +5 more sources

A fractional calculus on arbitrary time scales: Fractional differentiation and fractional integration [PDF]

open access: yesSignal Processing, 2015
We introduce a general notion of fractional (noninteger) derivative for functions defined on arbitrary time scales. The basic tools for the time-scale fractional calculus (fractional differentiation and fractional integration) are then developed. As particular cases, one obtains the usual time-scale Hilger derivative when the order of differentiation ...
Artur M C Brito da Cruz   +1 more
exaly   +4 more sources

A New Fractional Integration Operational Matrix of Chebyshev Wavelets in Fractional Delay Systems

open access: yesFractal and Fractional, 2019
Fractional integration operational matrix of Chebyshev wavelets based on the Riemann−Liouville fractional integral operator is derived directly from Chebyshev wavelets for the first time.
Iman Malmir
doaj   +3 more sources

Fractional Integration and Differentiation by new Transformation

open access: yesWasit Journal for Pure Sciences, 2023
In opposite to differentiation and integration of integer order, an important type of differentiation and integration is the so - called “ Fractional Calculus (FC) ” in which the differentiation and integration is of non-integer order.
Anfal khalil, Basim Albuohimad
doaj   +1 more source

Global Mean Sea Level. Time Trends and Persistence with Long Range Dependent Data

open access: yesFrontiers in Physics, 2021
Global mean sea level data are examined in this work by looking at the presence of time trends in the context of long memory or long range dependent processes.
Luis Alberiko Gil-Alana   +1 more
doaj   +1 more source

Fractional Line Integral [PDF]

open access: yesMathematics, 2021
This paper proposed a definition of the fractional line integral, generalising the concept of the fractional definite integral. The proposal replicated the properties of the classic definite integral, namely the fundamental theorem of integral calculus. It was based on the concept of the fractional anti-derivative used to generalise the Barrow formula.
Gabriel Bengochea, Manuel Ortigueira
openaire   +3 more sources

The effects of us covid-19 policy responses on cryptocurrencies, fintech and artificial intelligence stocks: A fractional integration analysis

open access: yesCogent Economics & Finance, 2022
This paper assesses the impact of US policy responses to the Covid-19 pandemic on various technology-related assets such as cryptocurrencies, financial technology, and artificial intelligence stocks using fractional integration techniques. More precisely,
Emmanuel Joel Aikins Abakah   +2 more
doaj   +1 more source

THE IMPACT OF COVID-19 ON THE TOURISM SECTOR IN BOSNIA AND HERZEGOVINA [PDF]

open access: yesGeo Journal of Tourism and Geosites, 2022
In this study, we examine the degree of persistence in tourism in Bosnia and Herzegovina and the impact that the COVID-19 pandemic has had on it. The series investigated are foreign arrivals and overnight stays for the time period from January 2008 to ...
Amir IMERI, Luis A. GIL-ALANA
doaj   +1 more source

Fractional Integration and Cointegration [PDF]

open access: yes, 2023
Abstract Fractionally integrated and fractionally cointegrated time series are classes of models that generalize standard notions of integrated and cointegrated time series. The fractional models are characterized by a small number of memory parameters that control the degree of fractional integration and/or cointegration.
Hualde, Javier   +1 more
openaire   +2 more sources

Evidence of Inflation Using Harmonized Consumer Price Indices in Some Euro Countries: France, Germany, Italy, and Spain, along with the Euro Zone

open access: yesMathematics, 2023
This paper deals with the analysis of the persistence in the Harmonized Indices of Consumer Prices in France, Germany, Italy, and Spain. The degree of persistence is measured through fractional integration or I (d) techniques, using monthly data from ...
Raquel Ayestarán   +3 more
doaj   +1 more source

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