Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level

The adoption of agricultural tractors by farms has resulted in different combinations, relationships and established ways of production of localities, regions and countries. The dynamics of the tractorization process are defined by the balance of the units that enter the fleet and those that are rem...

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Autores principales:	Muñoz,Ricardo, Llanos,José
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2012
Materias:	Aggregate diffusion agricultural mechanization lifespan technology adoption tractor tractorization
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300014
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spelling	oai:scielo:S0718-162020120003000142014-03-10Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate levelMuñoz,RicardoLlanos,José Aggregate diffusion agricultural mechanization lifespan technology adoption tractor tractorization The adoption of agricultural tractors by farms has resulted in different combinations, relationships and established ways of production of localities, regions and countries. The dynamics of the tractorization process are defined by the balance of the units that enter the fleet and those that are removed at the end of their useful life. This study uses a diffusion pattern and aggregated adoption of the agricultural tractor, the parameters of which were determined using a nonlinear estimation procedure and country-level data for Chile. Using the predictive power of the model, a longitudinal series of tractor fleets was estimated, and then the balance was calculated considering the units that were discharged. To more accurately determine the average lifespan of a tractor, successive iterations were performed to reduce differences with respect to a control variable for the number of tractors registered. The estimated average lifespan for agricultural tractors at the aggregate level is 22 years. This type of estimation procedure can be used not only for descriptive purposes, as in this case, but also for predictive purposes.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.39 n.3 20122012-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300014en10.4067/S0718-16202012000300014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aggregate diffusion agricultural mechanization lifespan technology adoption tractor tractorization
spellingShingle	Aggregate diffusion agricultural mechanization lifespan technology adoption tractor tractorization Muñoz,Ricardo Llanos,José Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
description	The adoption of agricultural tractors by farms has resulted in different combinations, relationships and established ways of production of localities, regions and countries. The dynamics of the tractorization process are defined by the balance of the units that enter the fleet and those that are removed at the end of their useful life. This study uses a diffusion pattern and aggregated adoption of the agricultural tractor, the parameters of which were determined using a nonlinear estimation procedure and country-level data for Chile. Using the predictive power of the model, a longitudinal series of tractor fleets was estimated, and then the balance was calculated considering the units that were discharged. To more accurately determine the average lifespan of a tractor, successive iterations were performed to reduce differences with respect to a control variable for the number of tractors registered. The estimated average lifespan for agricultural tractors at the aggregate level is 22 years. This type of estimation procedure can be used not only for descriptive purposes, as in this case, but also for predictive purposes.
author	Muñoz,Ricardo Llanos,José
author_facet	Muñoz,Ricardo Llanos,José
author_sort	Muñoz,Ricardo
title	Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
title_short	Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
title_full	Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
title_fullStr	Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
title_full_unstemmed	Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
title_sort	estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300014
work_keys_str_mv	AT munozricardo estimationofthelifespanofagriculturaltractorusingadiffusionmodelattheaggregatelevel AT llanosjose estimationofthelifespanofagriculturaltractorusingadiffusionmodelattheaggregatelevel
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Estimation of the lifespan of agricultural tractor using a diffusion model at the aggregate level

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