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Evaluation of total time consumption in harvester technology deployment in conditions of the forest sector of the Czech Republic
shift times harvester unit work productivity work efficiency forest harvesting
2018/3/6
Cut-to-length technology represents a modern forest logging technology characterized by high performance, efficiency,
productivity and work safety. At the same time it is friendly to forest ecosystem...
Modelling of forwarding distance to maximize the utilization of medium and high-power harvester technology
forwarder performance standards work productivity time consumption timber transport
2017/4/6
Every technologist aims to maximize the performance and capacity of vehicles, particularly when deployed in technological lines. To maximize the utilization of harvester technology, particularly of fo...
Operator's physical workload in simulated logging and timber bucking by harvester
forest harvesting biofeedback ergonomics
2016/6/3
The aim is to conduct experimental measurements and analyses of physical and mental workload of harvester operators. Among other things, monitoring and analyses of work conditions and workload help re...
Colony variation in the collective regulation of foraging by harvester ants
Colony variation harvester ants
2015/12/10
This study investigates variation in collective behavior in a natural population of colonies of the harvester ant, Pogonomyrmex
barbatus. Harvester ant colonies regulate foraging activity to adjust t...
Aggression is task dependent in the red harvester ant (Pogonomyrmex barbatus)
task dependent red harvester ant
2015/12/10
In many animal species, the propensity for aggression is linked to social context. In social insects, aggressive interactions
between colonies are related to the assessment of cuticular hydrocarbon ...
The rewards of restraint in the collective regulation of foraging by harvester ant colonies
collective regulation harvester ant colonies
2015/12/10
Collective behaviour, arising from local interactions1
, allows
groups to respond to changing conditions. Long-term studies have
shown that the traits of individual mammals and birds are associated...
Nest site and weather affect the personality of harvester ant colonies
Nest site and weather harvester ant colonies
2015/12/10
Environmental conditions and physical constraints both influence an animal’s behavior. We investigate whether behavioral
variation among colonies of the black harvester ant, Messor andrei, rema...
Evaluating the machine utilisation rate of harvester and forwarder using on-board computers in Southern Tasmania (Australia)
cut-to-length method harvester-processor multiDAT on-board computer correlation ratio
2015/8/14
This project used the recorded machine utilisation of two machines (harvester and forwarder) by MultiDATs
in pine plantations of Southern Tasmania (Australia) to verify the impact of site conditions...
Power Evaluation For Flutter-Based Electromagnetic Energy Harvester Using CFD Simulations
Power Evaluation Flutter-Based Electromagnetic Energy Harvester CFD Simulations
2015/6/30
Structural instability caused by self exciting aerodynamic forces (flutter) can be used as an effective input source for small scale energy harvesters. The self exciting aerodynamic force exerted on a...
Asynchronous phase shifted electromagnetic energy harvester
Energy harvester Electromagnetic transducer Asynchronous vibration Resonance
2015/6/30
A vibration-based energy harvester is built upon the idea of transforming mechanical vibration of an inertial frame into electrical power. When the excitation frequency matches the natural frequency o...
Power Evaluation for Flutter-based Electromagnetic Energy Harvester using CFD Simulations
Flutter CFD simulation aerodynamic instability energy harvesting electromagnetic
2015/6/30
Structural instability caused by self exciting aerodynamic forces (flutter) can be used as an effective input source for small scale energy harvesters. The self exciting aerodynamic force exerted on a...
An aero-elastic flutter based electromagnetic energy harvester with wind speed augmenting funnel
aero-elastic flutter electromagnetic energy harvester wind speed augmenting funnel
2015/6/30
This paper investigates the efficiency of wind speed augmenting funnel incorporated with an aero-elastic-flutter based, energy harvester. Flutter phenomenon has been used to convert wind flow energy i...
Research on reliability of forest harvester operation used in the company Lesy Slovenskej Republiky
reliability forest machines maintenance harvester
2015/4/24
The paper deals with reliability of forest harvesters. They are quite modern and helpful in the process of tree felling. The quality of felling is important for the further quality of wood used in woo...
A comparative analysis of neck muscle tension in a harvester operator compared with chainsaw and horse skidding operator and with normal human activities
biometric data fatigue harvester equipment stress
2015/4/24
The goal of the experiment was to assess the physical stress experienced by an operator during the use of harvester equipment. Experimental data was obtained from field measurements with a Biofeedback...
Harvester ants use interactions to regulate forager activation and availability
collective behaviour complex system
2015/12/10
Social groups balance flexibility and robustness in their collective response to environmental changes
using feedback between behavioural processes that operate at different timescales. Here we...