PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden

Detalhes bibliográficos
Autor(a) principal: Tarnowski, Bernardo Carlos
Data de Publicação: 1999
Outros Autores: Schneider, Paulo Renato, Machado, Carlos Cardoso
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/388
Resumo: In the present work a time study was conducted with the objective of adjusting equations to estimate the time of activities, productivity, operational costs and the production of the processor used in a harvest operation of stands of Eucalyptus grandis in plain topography in the state of Bahia, Brazil. The operational cycle of the processor consisted of the time spent to process a tree, and was divided in to stages, which were assessed using the methotodology of single activity times. The sampling unit was the operational cycle of the machine. The statistical analysis was based on regression analysis considering the selection procedure “stepwise”. With the adjusted equations it was possible to estimate the productivity of the machine taking into account the of tree diameter. Considering an operational efficiency of 70 % under the circumstances of the study, the productivity of the processor was 25,8 m3 cc/h, the operational costs 47,90 US$/h and the production costs 1,86 US$/m3 cc. On the basis of the obtained results it can be concluded that the time of tree processing has varied directly according to the diameter increase diameter; the preparation time, contrary to the processing time, only shows a weak correlation with tree diameter; productivity of the processor is directly proportional to tree diameter, when expressed in volume and inversely proportional when expressed in tree number; the costs per cubic meter of wood processed varies inversely with of increased diameter; from the operational costs, fixed costs had the highest proportion followed by the variable costs, administrative costs and costs for manpower; the production costs of the processor decreased exponentially with increasing tree diameter.
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spelling PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex MaidenProdutividade e custos do processador trabalhando em povoamentos de Eucalyptus grandis Hill ex Maiden.mechanized harvestproductivitycostsprocessorEucalyptus grandis.colheita mecanizadaprodutividadecustosprocessadorEucalyptus grandis.In the present work a time study was conducted with the objective of adjusting equations to estimate the time of activities, productivity, operational costs and the production of the processor used in a harvest operation of stands of Eucalyptus grandis in plain topography in the state of Bahia, Brazil. The operational cycle of the processor consisted of the time spent to process a tree, and was divided in to stages, which were assessed using the methotodology of single activity times. The sampling unit was the operational cycle of the machine. The statistical analysis was based on regression analysis considering the selection procedure “stepwise”. With the adjusted equations it was possible to estimate the productivity of the machine taking into account the of tree diameter. Considering an operational efficiency of 70 % under the circumstances of the study, the productivity of the processor was 25,8 m3 cc/h, the operational costs 47,90 US$/h and the production costs 1,86 US$/m3 cc. On the basis of the obtained results it can be concluded that the time of tree processing has varied directly according to the diameter increase diameter; the preparation time, contrary to the processing time, only shows a weak correlation with tree diameter; productivity of the processor is directly proportional to tree diameter, when expressed in volume and inversely proportional when expressed in tree number; the costs per cubic meter of wood processed varies inversely with of increased diameter; from the operational costs, fixed costs had the highest proportion followed by the variable costs, administrative costs and costs for manpower; the production costs of the processor decreased exponentially with increasing tree diameter.No presente trabalho foi realizado um estudo de tempos com o objetivo de ajustar equações para estimar o tempo das atividades, a produtividade, o custo operacional e da produção do processador utilizado em um sistema de colheita de madeira de povoamentos de Eucalyptus grandis Hill ex Maiden, em topografia plana, no Estado da Bahia. O ciclo operacional do processador consistiu no tempo gasto para processar uma árvore e foi dividido em etapas as quais foram cronometradas, usando a metodologia dos tempos individuais. A unidade amostral foi constituída do ciclo operacional da máquina. A análise estatística baseou-se em estudo de regressão, sendo utilizado o procedimento de modelagem de regressão "stepwise". Com as equações ajustadas, foi possível estimar a produtividade da máquina em função do diâmetro das árvores. Nas condições do estudo, considerando uma eficiência operacional de 70%, a produtividade do processador foi de 25,8 m³cc/h, o custo operacional 47,90 US$/h e o custo de produção de 1,86 US$/m³cc. Com base nos resultados obtidos, pode-se concluir que: o tempo de processamento das árvores varia diretamente com o aumento do diâmetro; o tempo de preparação, ao contrário do tempo de processamento, possui uma baixa correlação com o diâmetro das árvores; a produtividade do processador é diretamente proporcional ao aumento do diâmetro das árvores, quando expressa em volume, e inversamente proporcional, quando expressa em número de árvores; o custo por metro cúbico de madeira processada com processador, varia numa relação inversa ao aumento do diâmetro; do custo operacional do processador, o custo fixo é o de maior proporção, seguido do custo variável, administrativo e da mão-de-obra; e, o custo de produção do processador diminui em forma exponencial com o aumento do diâmetro das árvores.Universidade Federal de Santa Maria1999-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/38810.5902/19805098388Ciência Florestal; Vol. 9 No. 2 (1999); 103-115Ciência Florestal; v. 9 n. 2 (1999); 103-1151980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/388/260Tarnowski, Bernardo CarlosSchneider, Paulo RenatoMachado, Carlos Cardosoinfo:eu-repo/semantics/openAccess2017-06-08T12:04:46Zoai:ojs.pkp.sfu.ca:article/388Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-06-08T12:04:46Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
Produtividade e custos do processador trabalhando em povoamentos de Eucalyptus grandis Hill ex Maiden.
title PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
spellingShingle PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
Tarnowski, Bernardo Carlos
mechanized harvest
productivity
costs
processor
Eucalyptus grandis.
colheita mecanizada
produtividade
custos
processador
Eucalyptus grandis.
title_short PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
title_full PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
title_fullStr PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
title_full_unstemmed PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
title_sort PRODUCTIVITY AND COSTS OF PROCESSOR WORKING IN STANDS OF Eucalyptus grandis Hill ex Maiden
author Tarnowski, Bernardo Carlos
author_facet Tarnowski, Bernardo Carlos
Schneider, Paulo Renato
Machado, Carlos Cardoso
author_role author
author2 Schneider, Paulo Renato
Machado, Carlos Cardoso
author2_role author
author
dc.contributor.author.fl_str_mv Tarnowski, Bernardo Carlos
Schneider, Paulo Renato
Machado, Carlos Cardoso
dc.subject.por.fl_str_mv mechanized harvest
productivity
costs
processor
Eucalyptus grandis.
colheita mecanizada
produtividade
custos
processador
Eucalyptus grandis.
topic mechanized harvest
productivity
costs
processor
Eucalyptus grandis.
colheita mecanizada
produtividade
custos
processador
Eucalyptus grandis.
description In the present work a time study was conducted with the objective of adjusting equations to estimate the time of activities, productivity, operational costs and the production of the processor used in a harvest operation of stands of Eucalyptus grandis in plain topography in the state of Bahia, Brazil. The operational cycle of the processor consisted of the time spent to process a tree, and was divided in to stages, which were assessed using the methotodology of single activity times. The sampling unit was the operational cycle of the machine. The statistical analysis was based on regression analysis considering the selection procedure “stepwise”. With the adjusted equations it was possible to estimate the productivity of the machine taking into account the of tree diameter. Considering an operational efficiency of 70 % under the circumstances of the study, the productivity of the processor was 25,8 m3 cc/h, the operational costs 47,90 US$/h and the production costs 1,86 US$/m3 cc. On the basis of the obtained results it can be concluded that the time of tree processing has varied directly according to the diameter increase diameter; the preparation time, contrary to the processing time, only shows a weak correlation with tree diameter; productivity of the processor is directly proportional to tree diameter, when expressed in volume and inversely proportional when expressed in tree number; the costs per cubic meter of wood processed varies inversely with of increased diameter; from the operational costs, fixed costs had the highest proportion followed by the variable costs, administrative costs and costs for manpower; the production costs of the processor decreased exponentially with increasing tree diameter.
publishDate 1999
dc.date.none.fl_str_mv 1999-06-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/388
10.5902/19805098388
url https://periodicos.ufsm.br/cienciaflorestal/article/view/388
identifier_str_mv 10.5902/19805098388
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/388/260
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Florestal; Vol. 9 No. 2 (1999); 103-115
Ciência Florestal; v. 9 n. 2 (1999); 103-115
1980-5098
0103-9954
reponame:Ciência Florestal (Online)
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Florestal (Online)
collection Ciência Florestal (Online)
repository.name.fl_str_mv Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv ||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br
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