Sökning: "ride comfort"

Visar resultat 21 - 25 av 27 avhandlingar innehållade orden ride comfort.

  1. 21. Mathematical modelling for optimization of truck tyres selection

    Författare :Zuzana Sabartova; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; simulation-based optimization; truck tyres selection; surrogate model; radial basis function interpolation; rolling resistance coefficient; combinatorial set of problem instances; global optimization; global optimization;

    Sammanfattning : This thesis, which consists of an introduction and three appended papers, concerns the optimal selection of tyres for a given vehicle configuration and an operating environment in which the vehicle is to be used. The optimization problem stems from an industrial project performed in cooperation between Chalmers University of Technology and Volvo Group Trucks Technology (GTT). LÄS MER

  3. 22. Ett liv i berg och dalbana : innebörder av att leva med svår kronisk hjärtsvikt i palliativ avancerad hemsjukvård utifrån patienters, närståendes och sjuksköterskors berättelser

    Författare :Margareta Brännström; Gunilla Strandberg; Astrid Norberg; Kurt Boman; Bengt Fridlund; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chronic heart failure; close relative; limit situation; palliative care; patient; phenomenological-hermeneutics; professional caregiver; fenomenologisk-hermeneutik; gränssituation; professionella vårdare; kronisk hjärtsvikt; närstående; palliativ vård; patient; Nursing; Omvårdnad;

    Sammanfattning : The overall purpose of this thesis is to illuminate meanings of living with severe chronic heart failure (CHF) in palliative advanced home care (PAHC) as disclosed through patients’, close relatives’ and nurses’ narratives. This thesis comprises four papers that illuminate the phenomenon from various perspectives and with different focus. LÄS MER

  4. 23. Onboard condition monitoring of vehicle-track dynamic interaction using machine learning : Enabling the railway industry’s digital transformation

    Författare :Rohan Kulkarni; Mats Berg; Ulf Carlsson; Alireza Qazizadeh; Sebastian Stichel; Jordi Viñolas; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Active preventive maintenance; intelligent fault diagnosis; anomaly detection; vehicle fleet; track irregularities; vehicle hunting; wheel-rail interface.; Farkostteknik; Vehicle and Maritime Engineering;

    Sammanfattning : The railway sector’s reliability, availability, maintainability, and safety (RAMS) can significantly improve by adopting condition based maintenance (CBM). In the CBM regime, maintenance decisions are driven by condition monitoring (CM) of the asset. LÄS MER

  5. 24. Diagnosing Sharing Anxiety

    Författare :Sigma Dolins; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ridehailing; sharing anxiety; shared autonomous vehicles; ridepooling; on-demand transport; qualitative methods; shared autonomous public transport; autonomous vehicles; public transport;

    Sammanfattning : Numerous studies indicate that the potential of autonomous vehicles (AVs) to reduce greenhouse gas emissions, reduce traffic congestion, and increase mobility access can only be fully realized through fleets of vehicles being used for shared rides, also known as dynamic ridepooling. This has the potential for transforming the public transport industry, as well as how transportation functions in urban and rural contexts. LÄS MER

  7. 25. Dynamic Vehicle-Track Interaction of European Standard Freight Wagons with Link Suspension

    Författare :Per-Anders Jönsson; Sebastian Stichel; Evert Andersson; Jerzy Piotrowski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; railway; freight wagon; running gear; link suspension; laboratory test; ; stiffness; dry friction; hysteresis; simulation; vehicle-track interaction; multibody; simulation; MBS; Vehicle engineering; Farkostteknik;

    Sammanfattning : The link suspension is the most prevailing suspension system for freight wagons in Central and Western Europe. The system design is simple and has existed for more than 100 years. However, still its characteristics are not fully understood. LÄS MER