Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa

The article deals with annual harvest operations (AHO) planning with consideration of disturbance-free areas. We developed two models of binary integer linear programming (BILP) for scheduling work groups to harvest unit areas (HUA) according to the lowest possible cost. Total AHO costs inc...

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Autores principales:	Boštjan Kepic, Petra Grošelj, Janez Krč
Formato:	article
Lenguaje:	DE EN ES FR SL
Publicado:	Slovenian Forestry Institute 2016
Materias:	Forestry SD1-669.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/b15843e30d87422c98781a02942a5d7b
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spelling	oai:doaj.org-article:b15843e30d87422c98781a02942a5d7b2021-11-15T12:34:19ZVpliv mirnih con na načrtovanje letne sečnje in spravila lesa2335-31122335-395310.20315/ASetL.109.2https://doaj.org/article/b15843e30d87422c98781a02942a5d7b2016-01-01T00:00:00Zhttp://dirros.openscience.si/IzpisGradiva.php?id=7527https://doaj.org/toc/2335-3112https://doaj.org/toc/2335-3953 The article deals with annual harvest operations (AHO) planning with consideration of disturbance-free areas. We developed two models of binary integer linear programming (BILP) for scheduling work groups to harvest unit areas (HUA) according to the lowest possible cost. Total AHO costs include: harvesting and skidding costs, transportation costs, and machine relocation costs. First model is based on the presumption that harvesting can be planned and executed freely throughout the year. In the second model, scheduling was subject to time restrictions due to disturbance-free areas. 50% of the HUA had time restrictions which led to 16.9% reduction of annual workplace time. In this case, by introducing an extra work group, we can provide for the implementation of the AHO plan. Furthermore, we state that in this situation time restrictions affect the scheduling of work groups and the sequencing of tasks. The increase in total AHO costs can be explained by decreased wood harvesting capacity, increased production costs and higher amortization costs of machines. Available workplace time shortage due to time restrictions can be dealt with by shifting own workers to other tasks. The workforce deficits can be compensated by recruiting subcontractors. We have tested each model on two examples.Boštjan KepicPetra GrošeljJanez KrčSlovenian Forestry InstitutearticleForestrySD1-669.5Environmental sciencesGE1-350DEENESFRSLActa Silvae et Ligni, Vol 109, Pp 21-36 (2016)
institution	DOAJ
collection	DOAJ
language	DE EN ES FR SL
topic	Forestry SD1-669.5 Environmental sciences GE1-350
spellingShingle	Forestry SD1-669.5 Environmental sciences GE1-350 Boštjan Kepic Petra Grošelj Janez Krč Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
description	The article deals with annual harvest operations (AHO) planning with consideration of disturbance-free areas. We developed two models of binary integer linear programming (BILP) for scheduling work groups to harvest unit areas (HUA) according to the lowest possible cost. Total AHO costs include: harvesting and skidding costs, transportation costs, and machine relocation costs. First model is based on the presumption that harvesting can be planned and executed freely throughout the year. In the second model, scheduling was subject to time restrictions due to disturbance-free areas. 50% of the HUA had time restrictions which led to 16.9% reduction of annual workplace time. In this case, by introducing an extra work group, we can provide for the implementation of the AHO plan. Furthermore, we state that in this situation time restrictions affect the scheduling of work groups and the sequencing of tasks. The increase in total AHO costs can be explained by decreased wood harvesting capacity, increased production costs and higher amortization costs of machines. Available workplace time shortage due to time restrictions can be dealt with by shifting own workers to other tasks. The workforce deficits can be compensated by recruiting subcontractors. We have tested each model on two examples.
format	article
author	Boštjan Kepic Petra Grošelj Janez Krč
author_facet	Boštjan Kepic Petra Grošelj Janez Krč
author_sort	Boštjan Kepic
title	Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
title_short	Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
title_full	Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
title_fullStr	Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
title_full_unstemmed	Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
title_sort	vpliv mirnih con na načrtovanje letne sečnje in spravila lesa
publisher	Slovenian Forestry Institute
publishDate	2016
url	https://doaj.org/article/b15843e30d87422c98781a02942a5d7b
work_keys_str_mv	AT bostjankepic vplivmirnihconnanacrtovanjeletnesecnjeinspravilalesa AT petragroselj vplivmirnihconnanacrtovanjeletnesecnjeinspravilalesa AT janezkrc vplivmirnihconnanacrtovanjeletnesecnjeinspravilalesa
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Vpliv mirnih con na načrtovanje letne sečnje in spravila lesa

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