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Articles by Ola Lindroos

Category : Research article

article id 10755, category Research article
Rikard Jonsson, Lotta Woxblom, Rolf Björheden, Eva-Maria Nordström, Bosko Blagojevic, Ola Lindroos. (2022). Analysis of decision-making processes for strategic technology investments in Swedish large-scale forestry. Silva Fennica vol. 56 no. 3 article id 10755. https://doi.org/10.14214/sf.10755
Keywords: information needs; qualitative analysis; harwarder; forest technology development; semi-structured interviews; unstructured decision processes
Highlights: When making development decisions, respondents representing six relatively large users of forest technology aimed to maximize economic criteria without falling below threshold values for criteria such as operator well-being, soil rutting, and wood value; Collaboration between users, manufacturers, and researchers was found to be important; Decision-making could be improved by using tools such as problem-structuring methods, simulations, and optimization.
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article id 1546, category Research article
Jussi Manner, Lauri Palmroth, Tomas Nordfjell, Ola Lindroos. (2016). Load level forwarding work element analysis based on automatic follow-up data. Silva Fennica vol. 50 no. 3 article id 1546. https://doi.org/10.14214/sf.1546
Keywords: harvesting; cut-to-length logging; haulage; data gathering; automatic recording; classification algorithm; Hidden Markov Models
Highlights: Recent developments in on-board technology enables automatic collection of follow-up data on forwarder work; Time consumption per load was more strongly associated with Loading drive distance than with extraction distance, indicating that the relevance of extraction distance as a main indicator of forwarding productivity should be re-considered; Data, within variables, were positively skewed with a few exceptions with normal distributions.
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article id 1064, category Research article
Back Tomas Ersson, Urban Bergsten, Ola Lindroos. (2014). Reloading mechanized tree planting devices faster using a seedling tray carousel. Silva Fennica vol. 48 no. 2 article id 1064. https://doi.org/10.14214/sf.1064
Keywords: productivity; cost analysis; seedling feed; silviculture; time study; tree planting machine; containerized seedling
Highlights: Seedling reloading onto the Bracke Planter crane-mounted planting device was twice as fast with the MagMat tray-wise-loaded carousel as today’s seedling-wise-loaded carousel; Tray-wise reloading combined with deplugging seedlings from suitable cultivation trays has the potential to be an efficient and robust way to feed seedlings on any type of tree planting machine.
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article id 1030, category Research article
Jussi Manner, Tomas Nordfjell, Ola Lindroos. (2013). Effects of the number of assortments and log concentration on time consumption for forwarding. Silva Fennica vol. 47 no. 4 article id 1030. https://doi.org/10.14214/sf.1030
Keywords: productivity; time study; forest haulage; forwarders; cut-to-length logging; log extraction; terrain transport
Highlights: We analysed the effects of total and forwarded log concentrations (m3 (100 m)–1) and the number of loaded assortments on forwarding; The combination of the number of loaded assortments and their abundance (i.e. forwarded log concentration) affected time consumption most; This knowledge enables improved efficiency by optimizing number and assortment proportions in the various loads required to forward a stand.
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article id 108, category Research article
Back Tomas Ersson, Urban Bergsten, Ola Lindroos. (2011). The cost-efficiency of seedling packaging specifically designed for tree planting machines. Silva Fennica vol. 45 no. 3 article id 108. https://doi.org/10.14214/sf.108
Keywords: logistics; mechanized planting; containerized seedlings; seedling transport; cost analysis; seedling feed; nursery technology
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article id 135, category Research article
Ola Lindroos, Marina Henningsson, Dimitris Athanassiadis, Tomas Nordfjell. (2010). Forces required to vertically uproot tree stumps. Silva Fennica vol. 44 no. 4 article id 135. https://doi.org/10.14214/sf.135
Keywords: forest fuels; Picea abies; bioenergy; stump harvesting; machine development; Betula spp.
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article id 227, category Research article
Ola Lindroos. (2008). The effects of increased mechanization on time consumption in small-scale firewood processing. Silva Fennica vol. 42 no. 5 article id 227. https://doi.org/10.14214/sf.227
Keywords: comparative time study; fuelwood; blade saw; wedge splitter; processor; senior worker; operator effects
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Category : Research note

article id 148, category Research note
Ola Lindroos, Magnus Matisons, Petter Johansson, Tomas Nordfjell. (2010). Productivity of a prototype truck-mounted logging residue bundler and a road-side bundling system. Silva Fennica vol. 44 no. 3 article id 148. https://doi.org/10.14214/sf.148
Keywords: bioenergy; compaction; composite residue logs; densification; road-side landing; slash; supply chain
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