Sökning: "whole body vibration"
Visar resultat 11 - 15 av 21 avhandlingar innehållade orden whole body vibration.
11. Procedure for the reduction of the effect of transient whole body vibrations
Sammanfattning : There is a growing interest in the topic areas of increased vibration comfort and reduced vibration levels in work vehicles. Legislation, health costs and demands for increased competitiveness are all important motivating factors in this growing interest. LÄS MER
12. Vibration discomfort due to multi-axis excitation
Sammanfattning : This licentiate thesis focuses on vibration discomfort due to multi-axis excitation. It is based on three studies; the first two studies were conducted in a laboratory environment using motion platform and utilizing sinusoidal signals, and the last study was a field study that utilized a fork lift truck on an artificial test track with built in obstacles that allowed controlled transient vibration excitation. LÄS MER
13. Suspension design for off-road construction machines
Sammanfattning : Construction machines, also referred to as engineering vehicles or earth movers, are used in a variety of tasks related to infrastructure development and material handling. While modern construction machines represent a high level of sophistication in several areas, their suspension systems are generally rudimentary or even nonexistent. LÄS MER
14. Standing with and without vibration in children with severe cerebral palsy
Sammanfattning : Children with severe cerebral palsy (CP) risk fragile bones, fractures and hip dislocation due to disuse. A standing shell allows these children weight bearing in an upright position. Recommended standing time is one to two hours/day but evaluations are lacking. LÄS MER
15. Human factors in mechanized cut-to-length forest operations
Sammanfattning : Although forest operations research has a more than 50-year-long tradition in the field of human factors, there is a current decline in resources put on continuous and systematic human factors research. Therefore, the overall aim of this thesis was to contribute new knowledge on working conditions in mechanized cut-to-length logging operations and their relationship to system performance. LÄS MER