Timber harvester operators’ working technique in first thinning and the importance of cognitive abilities on work productivity

摘要: The working environment of timber harvester operators has changed dramatically over the past fifteen years. operator’s physical workload decreased while proportion mental load increased, as a consequence increased responsibilities involved in cutting work. decision making during work also and speeded up considerably. Therefore, importance operator, with regards to productivity, been emphasized result equalization different brands. For this reason, more attention is paid operator expectation reaching certain productivity levels. This places extra expectations on training; especially demanding conditions, such first thinning, where abilities are tested most. principal objective research was discover describe productive technique for thinning improve training by highlighting problems simulators determining important cognitive needed six professional studied using numerous data collection methods: time study, observation, helmet camera video recording, virtual simulator psychological tests. In addition, 40 students participated results indicated that when productively, moving distance head minimized. positioning removable tree should be short. felling tree, moved only fluent boom necessitates. planned so reversing avoided non-productive time, clearing small trees, minimal. From point view showed operators’ consistent method locate optimally according edge trees strip road. Based created described. A can increase 10 15%. handling located around theorized. applicable trainees conscious limitations simulators. selection tests skilful operating not solely explained one ability, instead, mastering kinds appears important. By combining taking into account challenges faced work, example, planning perception, graduated likely ready meet life.