Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2016
Authors
Juliana PerminowAbstract
No abstract has been registered
Abstract
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Authors
Mehreteab TesfaiAbstract
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Authors
Marianne Bechmann Dennis Collentine Flemming Gertz Morten Graversgaard Berith Hasler Janne Helin Brian Jacobsen Katri Rankinen Karen RefsgaardAbstract
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Authors
Ove BergersenAbstract
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Abstract
Winching is common in small-scale forest operations, especially on steep slopes, where tractors cannot reach the logs inside the forest. In this case, logs are dragged to the roadside with tractor-mounted winches, for later collection by transportation units. Winching is a heavy task, posing a high physiological stress on winching crew members. The aim of this study was to investigate the relationship between experienced workload, work conditions and operator fitness. The study confirmed the assumption that fit, young operators experience a lower workload than older ones. Workload depends on winching direction, and it is higher when winching downhill than when winching uphill. Results confirmed that gravity is the main factor, and it has a stronger effect than task type and tool weight. Walking uphill with no tools is heavier than walking downhill and carrying a steel cable. As a consequence, tool weight reduction can only palliate the problem, without solving it. Winching crews should be composed of fit, young workers. When the task is assigned to older workers, it is necessary to allow longer rest breaks, accepting a lower productivity. Keywords: steep terrain, winching, workload, heart rate
Authors
Z. Kruma L. Tomsone T. Kince R. Galoburda S. Senhofa M. Sabovics E. Straumite Ievina SturiteAbstract
No abstract has been registered
Authors
Hugh Cross Ed Biffin Kor-Jent Van Dijk Andrew Lowe Michelle WaycottAbstract
No abstract has been registered
Authors
Yang Shao Gregory Taff Jie Ren James B. CampbellAbstract
No abstract has been registered