Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Jussi Manner"'
Autor:
Jussi Manner, Hagos Lundström
Publikováno v:
Metsätieteen aikakauskirja, Vol 2024 (2024)
Externí odkaz:
https://doaj.org/article/6966bf84f35148088cddda91dbcc23fd
Autor:
Jussi Manner, Hagos Lundström
Publikováno v:
Silva Fennica, Vol 58, Iss 4 (2024)
The consensus on the factors affecting harvester productivity is generally widely acknowledged in the discipline. However, research results regarding the effect of forking on productivity are diverse. Some studies show that harvester productivity is
Externí odkaz:
https://doaj.org/article/f4719ac783d04d769a1c75c75ac367ce
Autor:
Jussi Manner
Publikováno v:
Silva Fennica, Vol 58, Iss 1 (2024)
The productivity of cut-to-length machine operators exhibits a significant disparity, with the most productive individuals demonstrating twice the efficiency of their less productive counterparts. This discrepancy is largely attributed to variations
Externí odkaz:
https://doaj.org/article/63e2ccdaa22545d98b158f53c9c2ee23
Autor:
Jussi Manner, Back Tomas Ersson
Publikováno v:
Journal of Forest Science, Vol 69, Iss 7, Pp 317-323 (2023)
According to the literature, forwarding productivity depends chiefly on log concentration, the number of assortments, mean log volume, load-size, slope, and extraction distance. However, there is not much scientific knowledge available on forwarding
Externí odkaz:
https://doaj.org/article/d5edaac9858b4c878a220d3beeae05ff
Publikováno v:
Journal of Forest Science, Vol 69, Iss 4, Pp 172-177 (2023)
While even-aged forestry is the dominating forest management system in Sweden, there is an increasing interest in Continuous Cover Forestry. Consequently, the conversion of even-aged stands into uneven-aged ones using e.g. selection cutting can be ex
Externí odkaz:
https://doaj.org/article/4edfacf6878445af81aa9a79b3c35635
Publikováno v:
Silva Fennica, Vol 57, Iss 3 (2023)
Today, conflicts often occur in northern Fennoscandia (also known as Sápmi) between forestry and reindeer husbandry. Continuous cover forestry (CCF) is requested by both reindeer herding communities and the general public and is becoming more common
Externí odkaz:
https://doaj.org/article/2342d0faab7341018b634f23b55817a2
Autor:
Jussi Manner, Back Tomas Ersson
Publikováno v:
Journal of Forest Science, Vol 67, Iss 5, Pp 242-246 (2021)
As labour for manual tree planting becomes scarcer, regeneration costs are steadily increasing in Nordic forestry. Today's intermittently advancing tree planting machines provide excellent silvicultural results, but are expensive to operate because o
Externí odkaz:
https://doaj.org/article/9275839d88e34aa6bd78f160047635ad
Publikováno v:
Journal of Forest Science, Vol 66, Iss 11, Pp 443-451 (2020)
Because of generally small log piles, loading forwarders during thinning is time consuming. The Assortment Grapple, an innovative grapple with an extra pair of claws which facilitates the handling of two assortments during one loading crane cycle, ha
Externí odkaz:
https://doaj.org/article/a5c4a70db37f4ac685d6533e1468af00
Publikováno v:
Silva Fennica, Vol 56, Iss 2 (2022)
Because todayâs tree planting machines do a good job silviculturally, the Nordic forest sector is interested in finding ways to increase the planting machinesâ productivity. Faster seedling reloading increases machine productivity, but that solutio
Externí odkaz:
https://doaj.org/article/bc3722e08e1c4d0f9d4e8010af3cddcc
Publikováno v:
Journal of Forest Science, Vol 65, Iss 5, Pp 183-194 (2019)
Factors affecting forwarding work are interesting because they can be used to better optimize forwarding routes and to predict costs. The main objective of this study was to investigate the association between driving speed and driving distance when
Externí odkaz:
https://doaj.org/article/e9fb09924a1e4bc6aafb7347629cd39c