Essays about: "Dynamic Density"

Showing result 11 - 15 of 111 essays containing the words Dynamic Density.

  1. 11. Improved Bridge Load Capacity via Dynamic Train-Track-Bridge Interaction : Assessing the dynamic amplification factor caused by measured track irregularities for rail freight transport

    University essay from KTH/Bro- och stålbyggnad

    Author : Muhannad Asaad; [2023]
    Keywords : ;

    Abstract : The carbon impact of transportation is large and requires sustainable solutions. With expected population growth, rail transportation plays a vital role in facilitating a greener Europe. The expansion of the rail infrastructure is therefore of essential importance for future challenges. READ MORE

  3. 12. Analysis of Footbridge Comfort Vibrations

    University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Niklas Thuresson; Henrik Ruuth; [2023]
    Keywords : footbridges; dynamics; vibrations; accelerations; Sétra; comfort vibrations; natural frequencies; Technology and Engineering;

    Abstract : The aim of this master's thesis was to investigate and increase the knowledge of how different parameters affect the dynamic properties of steel beam bridges used for pedestrian traffic. Steel footbridges are commonly used due to their high strength and low weight. READ MORE

  4. 13. Four years with Cotula coronopifolia  : Monitoring and climate suitability modelling

    University essay from Umeå universitet/Institutionen för fysiologisk botanik

    Author : Lina Tomasson; [2022]
    Keywords : climate suitability model; Cotula coronopifolia; dispersal mechanisms; expansion speed; invasive alien species;

    Abstract : Cotula coronopifolia is a short-lived plant that originates from South Africa and Namibia. It has been present in Europe since the 18th century. This study includes a monitoring inventory of two C. coronopifolia populations on Öland, Sweden, which has taken place continuously four consecutive years (2018-2021). READ MORE

  5. 14. Access Point Selection and Clustering Methods with Minimal Switching for Green Cell-Free Massive MIMO Networks

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Qinglong He; [2022]
    Keywords : Cell-free massive MIMO; multi-objective optimization; deep reinforcement learning; AP switch ON OFF; energy efficiency; Cellfri massiv MIMO; multiobjektiv optimering; djup förstärkningsinlärning; AP switch ON OFF; energieffektivitet;

    Abstract : As a novel beyond fifth-generation (5G) concept, cell-free massive MIMO (multiple-input multiple-output) recently has become a promising physical-layer technology where an enormous number of distributed access points (APs), coordinated by a central processing unit (CPU), cooperate to coherently serve a large number of user equipments (UEs) in the same time/frequency resource. However, denser AP deployment in cell-free networks as well as an exponentially growing number of mobile UEs lead to higher power consumption. READ MORE

  6. 15. Spectral density approach for dynamic analysis of high-speed railway bridges

    University essay from KTH/Bro- och stålbyggnad

    Author : Alket Ciku; Vlad Gavriliuc; [2022]
    Keywords : ;

    Abstract : The focus of this thesis is to introduce the concept of train signature in the spectraldensity approach used in the dynamic analysis of simply-supported railway bridges.Due to the increased transportation demands, longer trains with higher axles loadsand top speeds are being developed. READ MORE