Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models

The evolutions of crop productions are influenced by a series of both deterministic and stochastic factors, so the data series of these evolutions are variable with significant random components. Starting from this consideration, the paper comparatively analyzes the evolutions of the average annu...

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Autor principal:	Marian Zaharia
Formato:	article
Lenguaje:	EN
Publicado:	THOT Publishing House 2021
Materias:	crop production wheat regression arma Technology T Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/84429dee109e4ef59470aa7cba2fddde
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id	oai:doaj.org-article:84429dee109e4ef59470aa7cba2fddde
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spelling	oai:doaj.org-article:84429dee109e4ef59470aa7cba2fddde2021-11-15T14:52:37ZSimilarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models10.33727/JRISS.2021.2.19:175-1842668-0416https://doaj.org/article/84429dee109e4ef59470aa7cba2fddde2021-11-01T00:00:00Zhttp://jriss.4ader.ro/pdf/2021-02/19_Ec.pdfhttps://doaj.org/toc/2668-0416The evolutions of crop productions are influenced by a series of both deterministic and stochastic factors, so the data series of these evolutions are variable with significant random components. Starting from this consideration, the paper comparatively analyzes the evolutions of the average annual wheat production per hectare at the level of Romania and the South-West Oltenia development region, as well as at the level of Dolj county, component of this region. The main objective is to identify and analyze trend components, based on regression models, as well as random components, based on autoregressive and moving average (ARMA) models in order to identify similarities and differences between the evolutions of average wheat production per hectare in the last two decades. . The conclusion is that, although the evolution trends are similar, the random components highlight differences between the evolutions registered in Romania and in the South-West Oltenia region, which highlights the significant impact of specific random factorsMarian ZahariaTHOT Publishing Housearticlecrop productionwheatregressionarmaTechnologyTEngineering (General). Civil engineering (General)TA1-2040ENJournal of Research and Innovation for Sustainable Society, Vol 3, Iss 2, Pp 175-184 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	crop production wheat regression arma Technology T Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	crop production wheat regression arma Technology T Engineering (General). Civil engineering (General) TA1-2040 Marian Zaharia Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models
description	The evolutions of crop productions are influenced by a series of both deterministic and stochastic factors, so the data series of these evolutions are variable with significant random components. Starting from this consideration, the paper comparatively analyzes the evolutions of the average annual wheat production per hectare at the level of Romania and the South-West Oltenia development region, as well as at the level of Dolj county, component of this region. The main objective is to identify and analyze trend components, based on regression models, as well as random components, based on autoregressive and moving average (ARMA) models in order to identify similarities and differences between the evolutions of average wheat production per hectare in the last two decades. . The conclusion is that, although the evolution trends are similar, the random components highlight differences between the evolutions registered in Romania and in the South-West Oltenia region, which highlights the significant impact of specific random factors
format	article
author	Marian Zaharia
author_facet	Marian Zaharia
author_sort	Marian Zaharia
title	Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models
title_short	Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models
title_full	Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models
title_fullStr	Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models
title_full_unstemmed	Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models
title_sort	similarities and differences between the evolutions of the average wheat productions in romania, south-west oltenia and dolj. arma models
publisher	THOT Publishing House
publishDate	2021
url	https://doaj.org/article/84429dee109e4ef59470aa7cba2fddde
work_keys_str_mv	AT marianzaharia similaritiesanddifferencesbetweentheevolutionsoftheaveragewheatproductionsinromaniasouthwestolteniaanddoljarmamodels
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Similarities and differences between the evolutions of the average wheat productions in Romania, South-West Oltenia and Dolj. ARMA models

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