20.500.12556/RUL-183076 Work process analysis and workload of a choker setter in timber extraction operations by Konrad Mounty 4000 cable yarder This paper examines the workload of the choker setter in timber extraction operations using the Konrad Mounty 4000 cable yarder. A time study was conducted, measuring the choker setter's heart rate and productivity at varying extraction distances for both »uphill« and »downhill« extraction directions. Heart rate data collected during work was analyzed to evaluate the choker setter's workload in relation to both extraction distance and direction. A total of 257 cycles were recorded across four worksites with similar harvesting performance characteristics. This heart rate data facilitated an analysis of the choker setter’s workload as influenced by field and technological factors. The results indicate that the workload comprises both physical and mental components and generally decreases with increasing extraction distance. The analysis of the measurements indicates that heart rate variability is significantly greater on »downhill« worksites compared to »uphill« worksites. This is a consequence of the different structure of working time at worksites with different directions of timber extraction, as well as the specific characteristics of the work process that affect the workload of the choker setter. Consequently the study has highlighted some insights that can guide the optimization of the choker setter’s workload as an essential factor in designing an efficient work process. wood extraction by cable yarder choker setter time study workload gozdarstvo pridobivanje lesa študija časa delovna obremenitev true false true Angleški jezik Slovenski jezik Članek v reviji 2026-06-03 14:18:48 2026-06-03 14:18:54 2026-06-04 04:11:16 0000-00-00 00:00:00 2026 0 0 9 str. issue 2 Vol. 47 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-01-01 630*31 1848-9672 10.5552/crojfe.2026.3901 280335875 RAZ_Krc_Janez_2026.pdf RAZ_Krc_Janez_2026.pdf 1 A4F67F679579116A3DD7E40855A7BCA0 2301047a1b33d2e89f859218ff2adcaff82e35ba8e839ffc398ea86b85f93413 06d6b429-5f46-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234910 https://crojfe.com/archive/volume-47-no-2/work-process-analysis-and-workload-of-a-choker-setter-in-timber-extraction-operations-by-konrad-mounty-4000-cable-yarder/ 1 064ce19e-5f46-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234909 Biotehniška fakulteta 0 0 0